diff options
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/IA32/InterruptTable.nasm | 63 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBbs.c | 530 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBda.c | 62 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c | 1227 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf | 129 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.uni | 16 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxeExtra.uni | 14 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h | 1435 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c | 2212 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyCmos.c | 117 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyIde.c | 315 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c | 3114 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacySio.c | 489 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/Thunk.c | 422 | ||||
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/X64/InterruptTable.nasm | 64 |
15 files changed, 0 insertions, 10209 deletions
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/IA32/InterruptTable.nasm b/OvmfPkg/Csm/LegacyBiosDxe/IA32/InterruptTable.nasm deleted file mode 100644 index 90bfdff..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/IA32/InterruptTable.nasm +++ /dev/null @@ -1,63 +0,0 @@ -;; @file
-; Interrupt Redirection Template
-;
-; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
-;
-; SPDX-License-Identifier: BSD-2-Clause-Patent
-;
-;;
-
-SECTION .text
-
-;----------------------------------------------------------------------------
-; Procedure: InterruptRedirectionTemplate: Redirects interrupts 0x68-0x6F
-;
-; Input: None
-;
-; Output: None
-;
-; Prototype: VOID
-; InterruptRedirectionTemplate (
-; VOID
-; );
-;
-; Saves: None
-;
-; Modified: None
-;
-; Description: Contains the code that is copied into low memory (below 640K).
-; This code reflects interrupts 0x68-0x6f to interrupts 0x08-0x0f.
-; This template must be copied into low memory, and the IDT entries
-; 0x68-0x6F must be point to the low memory copy of this code. Each
-; entry is 4 bytes long, so IDT entries 0x68-0x6F can be easily
-; computed.
-;
-;----------------------------------------------------------------------------
-
-global ASM_PFX(InterruptRedirectionTemplate)
-ASM_PFX(InterruptRedirectionTemplate):
- int 0x8
- DB 0xcf ; IRET
- nop
- int 0x9
- DB 0xcf ; IRET
- nop
- int 0xa
- DB 0xcf ; IRET
- nop
- int 0xb
- DB 0xcf ; IRET
- nop
- int 0xc
- DB 0xcf ; IRET
- nop
- int 0xd
- DB 0xcf ; IRET
- nop
- int 0xe
- DB 0xcf ; IRET
- nop
- int 0xf
- DB 0xcf ; IRET
- nop
-
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBbs.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBbs.c deleted file mode 100644 index cd80720..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBbs.c +++ /dev/null @@ -1,530 +0,0 @@ -/** @file
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-#include <IndustryStandard/Pci.h>
-
-// Give floppy 3 states
-// FLOPPY_PRESENT_WITH_MEDIA = Floppy controller present and media is inserted
-// FLOPPY_NOT_PRESENT = No floppy controller present
-// FLOPPY_PRESENT_NO_MEDIA = Floppy controller present but no media inserted
-//
-#define FLOPPY_NOT_PRESENT 0
-#define FLOPPY_PRESENT_WITH_MEDIA 1
-#define FLOPPY_PRESENT_NO_MEDIA 2
-
-BBS_TABLE *mBbsTable;
-BOOLEAN mBbsTableDoneFlag = FALSE;
-BOOLEAN IsHaveMediaInFloppy = TRUE;
-
-/**
- Checks the state of the floppy and if media is inserted.
-
- This routine checks the state of the floppy and if media is inserted.
- There are 3 cases:
- No floppy present - Set BBS entry to ignore
- Floppy present & no media - Set BBS entry to lowest priority. We cannot
- set it to ignore since 16-bit CSM will
- indicate no floppy and thus drive A: is
- unusable. CSM-16 will not try floppy since
- lowest priority and thus not incur boot
- time penality.
- Floppy present & media - Set BBS entry to some priority.
-
- @return State of floppy media
-
-**/
-UINT8
-HasMediaInFloppy (
- VOID
- )
-{
- EFI_STATUS Status;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- EFI_ISA_IO_PROTOCOL *IsaIo;
- EFI_BLOCK_IO_PROTOCOL *BlkIo;
-
- HandleBuffer = NULL;
- HandleCount = 0;
-
- gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiIsaIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
-
- //
- // If don't find any ISA/IO protocol assume no floppy. Need for floppy
- // free system
- //
- if (HandleCount == 0) {
- return FLOPPY_NOT_PRESENT;
- }
-
- ASSERT (HandleBuffer != NULL);
-
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiIsaIoProtocolGuid,
- (VOID **)&IsaIo
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- if (IsaIo->ResourceList->Device.HID != EISA_PNP_ID (0x604)) {
- continue;
- }
-
- //
- // Update blockio in case the floppy is inserted in during BdsTimeout
- //
- Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
-
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Status = gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);
-
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiBlockIoProtocolGuid,
- (VOID **)&BlkIo
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- if (BlkIo->Media->MediaPresent) {
- FreePool (HandleBuffer);
- return FLOPPY_PRESENT_WITH_MEDIA;
- } else {
- FreePool (HandleBuffer);
- return FLOPPY_PRESENT_NO_MEDIA;
- }
- }
-
- FreePool (HandleBuffer);
-
- return FLOPPY_NOT_PRESENT;
-}
-
-/**
- Complete build of BBS TABLE.
-
- @param Private Legacy BIOS Instance data
- @param BbsTable BBS Table passed to 16-bit code
-
- @retval EFI_SUCCESS Removable media not present
-
-**/
-EFI_STATUS
-LegacyBiosBuildBbs (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN BBS_TABLE *BbsTable
- )
-{
- UINTN BbsIndex;
- HDD_INFO *HddInfo;
- UINTN HddIndex;
- UINTN Index;
- EFI_HANDLE *BlockIoHandles;
- UINTN NumberBlockIoHandles;
- UINTN BlockIndex;
- EFI_STATUS Status;
-
- //
- // First entry is floppy.
- // Next 2*MAX_IDE_CONTROLLER entries are for onboard IDE.
- // Next n entries are filled in after each ROM is dispatched.
- // Entry filled in if follow BBS spec. See LegacyPci.c
- // Next entries are for non-BBS compliant ROMS. They are filled in by
- // 16-bit code during Legacy16UpdateBbs invocation. Final BootPriority
- // occurs after that invocation.
- //
- // Floppy
- // Set default state.
- //
- IsHaveMediaInFloppy = HasMediaInFloppy ();
- if (IsHaveMediaInFloppy == FLOPPY_PRESENT_WITH_MEDIA) {
- BbsTable[0].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- } else {
- if (IsHaveMediaInFloppy == FLOPPY_PRESENT_NO_MEDIA) {
- BbsTable[0].BootPriority = BBS_LOWEST_PRIORITY;
- } else {
- BbsTable[0].BootPriority = BBS_IGNORE_ENTRY;
- }
- }
-
- BbsTable[0].Bus = 0xff;
- BbsTable[0].Device = 0xff;
- BbsTable[0].Function = 0xff;
- BbsTable[0].DeviceType = BBS_FLOPPY;
- BbsTable[0].Class = 01;
- BbsTable[0].SubClass = 02;
- BbsTable[0].StatusFlags.OldPosition = 0;
- BbsTable[0].StatusFlags.Reserved1 = 0;
- BbsTable[0].StatusFlags.Enabled = 0;
- BbsTable[0].StatusFlags.Failed = 0;
- BbsTable[0].StatusFlags.MediaPresent = 0;
- BbsTable[0].StatusFlags.Reserved2 = 0;
-
- //
- // Onboard HDD - Note Each HDD controller controls 2 drives
- // Master & Slave
- //
- HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];
- //
- // Get IDE Drive Info
- //
- LegacyBiosBuildIdeData (Private, &HddInfo, 0);
-
- for (HddIndex = 0; HddIndex < MAX_IDE_CONTROLLER; HddIndex++) {
- BbsIndex = HddIndex * 2 + 1;
- for (Index = 0; Index < 2; ++Index) {
- BbsTable[BbsIndex + Index].Bus = HddInfo[HddIndex].Bus;
- BbsTable[BbsIndex + Index].Device = HddInfo[HddIndex].Device;
- BbsTable[BbsIndex + Index].Function = HddInfo[HddIndex].Function;
- BbsTable[BbsIndex + Index].Class = 01;
- BbsTable[BbsIndex + Index].SubClass = 01;
- BbsTable[BbsIndex + Index].StatusFlags.OldPosition = 0;
- BbsTable[BbsIndex + Index].StatusFlags.Reserved1 = 0;
- BbsTable[BbsIndex + Index].StatusFlags.Enabled = 0;
- BbsTable[BbsIndex + Index].StatusFlags.Failed = 0;
- BbsTable[BbsIndex + Index].StatusFlags.MediaPresent = 0;
- BbsTable[BbsIndex + Index].StatusFlags.Reserved2 = 0;
-
- //
- // If no controller found or no device found set to ignore
- // else set to unprioritized and set device type
- //
- if (HddInfo[HddIndex].CommandBaseAddress == 0) {
- BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
- } else {
- if (Index == 0) {
- if ((HddInfo[HddIndex].Status & (HDD_MASTER_IDE | HDD_MASTER_ATAPI_CDROM | HDD_MASTER_ATAPI_ZIPDISK)) != 0) {
- BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- if ((HddInfo[HddIndex].Status & HDD_MASTER_IDE) != 0) {
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
- } else if ((HddInfo[HddIndex].Status & HDD_MASTER_ATAPI_CDROM) != 0) {
- BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;
- } else {
- //
- // for ZIPDISK
- //
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
- }
- } else {
- BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
- }
- } else {
- if ((HddInfo[HddIndex].Status & (HDD_SLAVE_IDE | HDD_SLAVE_ATAPI_CDROM | HDD_SLAVE_ATAPI_ZIPDISK)) != 0) {
- BbsTable[BbsIndex + Index].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- if ((HddInfo[HddIndex].Status & HDD_SLAVE_IDE) != 0) {
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
- } else if ((HddInfo[HddIndex].Status & HDD_SLAVE_ATAPI_CDROM) != 0) {
- BbsTable[BbsIndex + Index].DeviceType = BBS_CDROM;
- } else {
- //
- // for ZIPDISK
- //
- BbsTable[BbsIndex + Index].DeviceType = BBS_HARDDISK;
- }
- } else {
- BbsTable[BbsIndex + Index].BootPriority = BBS_IGNORE_ENTRY;
- }
- }
- }
- }
- }
-
- //
- // Add non-IDE block devices
- //
- BbsIndex = HddIndex * 2 + 1;
-
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiBlockIoProtocolGuid,
- NULL,
- &NumberBlockIoHandles,
- &BlockIoHandles
- );
-
- if (!EFI_ERROR (Status)) {
- UINTN Removable;
- EFI_BLOCK_IO_PROTOCOL *BlkIo;
- EFI_PCI_IO_PROTOCOL *PciIo;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
- EFI_HANDLE PciHandle;
- UINTN SegNum;
- UINTN BusNum;
- UINTN DevNum;
- UINTN FuncNum;
-
- for (Removable = 0; Removable < 2; Removable++) {
- for (BlockIndex = 0; BlockIndex < NumberBlockIoHandles; BlockIndex++) {
- Status = gBS->HandleProtocol (
- BlockIoHandles[BlockIndex],
- &gEfiBlockIoProtocolGuid,
- (VOID **)&BlkIo
- );
-
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // Skip the logical partitions
- //
- if (BlkIo->Media->LogicalPartition) {
- continue;
- }
-
- //
- // Skip the fixed block io then the removable block io
- //
- if (BlkIo->Media->RemovableMedia == ((Removable == 0) ? FALSE : TRUE)) {
- continue;
- }
-
- //
- // Get Device Path
- //
- Status = gBS->HandleProtocol (
- BlockIoHandles[BlockIndex],
- &gEfiDevicePathProtocolGuid,
- (VOID **)&DevicePath
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // Skip ATA devices as they have already been handled
- //
- DevicePathNode = DevicePath;
- while (!IsDevicePathEnd (DevicePathNode)) {
- if ((DevicePathType (DevicePathNode) == MESSAGING_DEVICE_PATH) &&
- (DevicePathSubType (DevicePathNode) == MSG_ATAPI_DP))
- {
- break;
- }
-
- DevicePathNode = NextDevicePathNode (DevicePathNode);
- }
-
- if (!IsDevicePathEnd (DevicePathNode)) {
- continue;
- }
-
- //
- // Locate which PCI device
- //
- Status = gBS->LocateDevicePath (
- &gEfiPciIoProtocolGuid,
- &DevicePath,
- &PciHandle
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Status = PciIo->GetLocation (
- PciIo,
- &SegNum,
- &BusNum,
- &DevNum,
- &FuncNum
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- if (SegNum != 0) {
- DEBUG ((
- DEBUG_WARN,
- "CSM cannot use PCI devices in segment %Lu\n",
- (UINT64)SegNum
- ));
- continue;
- }
-
- DEBUG ((
- DEBUG_INFO,
- "Add Legacy Bbs entry for PCI %d/%d/%d\n",
- BusNum,
- DevNum,
- FuncNum
- ));
-
- BbsTable[BbsIndex].Bus = BusNum;
- BbsTable[BbsIndex].Device = DevNum;
- BbsTable[BbsIndex].Function = FuncNum;
- BbsTable[BbsIndex].Class = 1;
- BbsTable[BbsIndex].SubClass = 0x80;
- BbsTable[BbsIndex].StatusFlags.OldPosition = 0;
- BbsTable[BbsIndex].StatusFlags.Reserved1 = 0;
- BbsTable[BbsIndex].StatusFlags.Enabled = 0;
- BbsTable[BbsIndex].StatusFlags.Failed = 0;
- BbsTable[BbsIndex].StatusFlags.MediaPresent = 0;
- BbsTable[BbsIndex].StatusFlags.Reserved2 = 0;
- BbsTable[BbsIndex].DeviceType = BBS_HARDDISK;
- BbsTable[BbsIndex].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- BbsIndex++;
-
- if (BbsIndex == MAX_BBS_ENTRIES) {
- Removable = 2;
- break;
- }
- }
- }
-
- FreePool (BlockIoHandles);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Get all BBS info
-
- @param This Protocol instance pointer.
- @param HddCount Number of HDD_INFO structures
- @param HddInfo Onboard IDE controller information
- @param BbsCount Number of BBS_TABLE structures
- @param BbsTable List BBS entries
-
- @retval EFI_SUCCESS Tables returned
- @retval EFI_NOT_FOUND resource not found
- @retval EFI_DEVICE_ERROR can not get BBS table
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosGetBbsInfo (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- OUT UINT16 *HddCount,
- OUT HDD_INFO **HddInfo,
- OUT UINT16 *BbsCount,
- OUT BBS_TABLE **BbsTable
- )
-{
- LEGACY_BIOS_INSTANCE *Private;
- EFI_IA32_REGISTER_SET Regs;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;
- // HDD_INFO *LocalHddInfo;
- // IN BBS_TABLE *LocalBbsTable;
- UINTN NumHandles;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- UINTN TempData;
- UINT32 Granularity;
-
- HandleBuffer = NULL;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;
- // LocalHddInfo = EfiToLegacy16BootTable->HddInfo;
- // LocalBbsTable = (BBS_TABLE*)(UINTN)EfiToLegacy16BootTable->BbsTable;
-
- if (!mBbsTableDoneFlag) {
- mBbsTable = Private->BbsTablePtr;
-
- //
- // Always enable disk controllers so 16-bit CSM code has valid information for all
- // drives.
- //
- //
- // Get PciRootBridgeIO protocol
- //
- gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciRootBridgeIoProtocolGuid,
- NULL,
- &NumHandles,
- &HandleBuffer
- );
-
- if (NumHandles == 0) {
- return EFI_NOT_FOUND;
- }
-
- mBbsTableDoneFlag = TRUE;
- for (Index = 0; Index < NumHandles; Index++) {
- //
- // Connect PciRootBridgeIO protocol handle with FALSE parameter to let
- // PCI bus driver enumerate all subsequent handles
- //
- gBS->ConnectController (HandleBuffer[Index], NULL, NULL, FALSE);
- }
-
- LegacyBiosBuildBbs (Private, mBbsTable);
-
- Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xe0000, 0x20000, &Granularity);
-
- //
- // Call into Legacy16 code to add to BBS table for non BBS compliant OPROMs.
- //
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16UpdateBbs;
-
- //
- // Pass in handoff data
- //
- TempData = (UINTN)EfiToLegacy16BootTable;
- Regs.X.ES = NORMALIZE_EFI_SEGMENT ((UINT32)TempData);
- Regs.X.BX = NORMALIZE_EFI_OFFSET ((UINT32)TempData);
-
- Private->LegacyBios.FarCall86 (
- This,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- Private->Cpu->FlushDataCache (Private->Cpu, 0xE0000, 0x20000, EfiCpuFlushTypeWriteBackInvalidate);
- Private->LegacyRegion->Lock (Private->LegacyRegion, 0xe0000, 0x20000, &Granularity);
-
- if (Regs.X.AX != 0) {
- return EFI_DEVICE_ERROR;
- }
- }
-
- if (HandleBuffer != NULL) {
- FreePool (HandleBuffer);
- }
-
- *HddCount = MAX_IDE_CONTROLLER;
- *HddInfo = EfiToLegacy16BootTable->HddInfo;
- *BbsTable = (BBS_TABLE *)(UINTN)EfiToLegacy16BootTable->BbsTable;
- *BbsCount = (UINT16)(sizeof (Private->IntThunk->BbsTable) / sizeof (BBS_TABLE));
- return EFI_SUCCESS;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBda.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBda.c deleted file mode 100644 index a873015..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBda.c +++ /dev/null @@ -1,62 +0,0 @@ -/** @file
- This code fills in BDA (0x400) and EBDA (pointed to by 0x4xx)
- information. There is support for doing initializeation before
- Legacy16 is loaded and before a legacy boot is attempted.
-
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-
-/**
- Fill in the standard BDA and EBDA stuff before Legacy16 load
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosInitBda (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- BDA_STRUC *Bda;
- UINT8 *Ebda;
-
- Bda = (BDA_STRUC *)((UINTN)0x400);
- Ebda = (UINT8 *)((UINTN)0x9fc00);
-
- ACCESS_PAGE0_CODE (
- ZeroMem (Bda, 0x100);
- //
- // 640k-1k for EBDA
- //
- Bda->MemSize = 0x27f;
- Bda->KeyHead = 0x1e;
- Bda->KeyTail = 0x1e;
- Bda->FloppyData = 0x00;
- Bda->FloppyTimeout = 0xff;
-
- Bda->KeyStart = 0x001E;
- Bda->KeyEnd = 0x003E;
- Bda->KeyboardStatus = 0x10;
- Bda->Ebda = 0x9fc0;
-
- //
- // Move LPT time out here and zero out LPT4 since some SCSI OPROMS
- // use this as scratch pad (LPT4 is Reserved)
- //
- Bda->Lpt1_2Timeout = 0x1414;
- Bda->Lpt3_4Timeout = 0x1400;
-
- );
-
- ZeroMem (Ebda, 0x400);
- *Ebda = 0x01;
-
- return EFI_SUCCESS;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c deleted file mode 100644 index d587b55..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c +++ /dev/null @@ -1,1227 +0,0 @@ -/** @file
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-
-#define PHYSICAL_ADDRESS_TO_POINTER(Address) ((VOID *) ((UINTN) Address))
-
-//
-// define maximum number of HDD system supports
-//
-#define MAX_HDD_ENTRIES 0x30
-
-//
-// Module Global:
-// Since this driver will only ever produce one instance of the Private Data
-// protocol you are not required to dynamically allocate the PrivateData.
-//
-LEGACY_BIOS_INSTANCE mPrivateData;
-
-//
-// The SMBIOS table in EfiRuntimeServicesData memory
-//
-VOID *mRuntimeSmbiosEntryPoint = NULL;
-
-//
-// The SMBIOS table in EfiReservedMemoryType memory
-//
-EFI_PHYSICAL_ADDRESS mReserveSmbiosEntryPoint = 0;
-EFI_PHYSICAL_ADDRESS mStructureTableAddress = 0;
-UINTN mStructureTablePages = 0;
-BOOLEAN mEndOfDxe = FALSE;
-
-/**
- Allocate memory for legacy usage. The memory is executable.
-
- @param AllocateType The type of allocation to perform.
- @param MemoryType The type of memory to allocate.
- @param StartPageAddress Start address of range
- @param Pages Number of pages to allocate
- @param Result Result of allocation
-
- @retval EFI_SUCCESS Legacy memory is allocated successfully.
- @retval Other Legacy memory is not allocated.
-
-**/
-EFI_STATUS
-AllocateLegacyMemory (
- IN EFI_ALLOCATE_TYPE AllocateType,
- IN EFI_MEMORY_TYPE MemoryType,
- IN EFI_PHYSICAL_ADDRESS StartPageAddress,
- IN UINTN Pages,
- OUT EFI_PHYSICAL_ADDRESS *Result
- )
-{
- EFI_STATUS Status;
- EFI_PHYSICAL_ADDRESS MemPage;
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
-
- //
- // Allocate Pages of memory less <= StartPageAddress
- //
- MemPage = (EFI_PHYSICAL_ADDRESS)(UINTN)StartPageAddress;
- Status = gBS->AllocatePages (
- AllocateType,
- MemoryType,
- Pages,
- &MemPage
- );
- //
- // Do not ASSERT on Status error but let caller decide since some cases
- // memory is already taken but that is ok.
- //
- if (!EFI_ERROR (Status)) {
- if (MemoryType != EfiBootServicesCode) {
- //
- // Make sure that the buffer can be used to store code.
- //
- Status = gDS->GetMemorySpaceDescriptor (MemPage, &MemDesc);
- if (!EFI_ERROR (Status) && ((MemDesc.Attributes & EFI_MEMORY_XP) != 0)) {
- Status = gDS->SetMemorySpaceAttributes (
- MemPage,
- EFI_PAGES_TO_SIZE (Pages),
- MemDesc.Attributes & (~EFI_MEMORY_XP)
- );
- }
-
- if (EFI_ERROR (Status)) {
- gBS->FreePages (MemPage, Pages);
- }
- }
- }
-
- if (!EFI_ERROR (Status)) {
- *Result = (EFI_PHYSICAL_ADDRESS)(UINTN)MemPage;
- }
-
- return Status;
-}
-
-/**
- This function is called when EFI needs to reserve an area in the 0xE0000 or 0xF0000
- 64 KB blocks.
-
- Note: inconsistency with the Framework CSM spec. Per the spec, this function may be
- invoked only once. This limitation is relaxed to allow multiple calls in this implementation.
-
- @param This Protocol instance pointer.
- @param LegacyMemorySize Size of required region
- @param Region Region to use. 00 = Either 0xE0000 or 0xF0000
- block Bit0 = 1 0xF0000 block Bit1 = 1 0xE0000
- block
- @param Alignment Address alignment. Bit mapped. First non-zero
- bit from right is alignment.
- @param LegacyMemoryAddress Region Assigned
-
- @retval EFI_SUCCESS Region assigned
- @retval EFI_ACCESS_DENIED Procedure previously invoked
- @retval Other Region not assigned
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosGetLegacyRegion (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINTN LegacyMemorySize,
- IN UINTN Region,
- IN UINTN Alignment,
- OUT VOID **LegacyMemoryAddress
- )
-{
- LEGACY_BIOS_INSTANCE *Private;
- EFI_IA32_REGISTER_SET Regs;
- EFI_STATUS Status;
- UINT32 Granularity;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xE0000, 0x20000, &Granularity);
-
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16GetTableAddress;
- Regs.X.BX = (UINT16)Region;
- Regs.X.CX = (UINT16)LegacyMemorySize;
- Regs.X.DX = (UINT16)Alignment;
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- if (Regs.X.AX == 0) {
- *LegacyMemoryAddress = (VOID *)(((UINTN)Regs.X.DS << 4) + Regs.X.BX);
- Status = EFI_SUCCESS;
- } else {
- Status = EFI_OUT_OF_RESOURCES;
- }
-
- Private->Cpu->FlushDataCache (Private->Cpu, 0xE0000, 0x20000, EfiCpuFlushTypeWriteBackInvalidate);
- Private->LegacyRegion->Lock (Private->LegacyRegion, 0xE0000, 0x20000, &Granularity);
-
- return Status;
-}
-
-/**
- This function is called when copying data to the region assigned by
- EFI_LEGACY_BIOS_PROTOCOL.GetLegacyRegion().
-
- @param This Protocol instance pointer.
- @param LegacyMemorySize Size of data to copy
- @param LegacyMemoryAddress Legacy Region destination address Note: must
- be in region assigned by
- LegacyBiosGetLegacyRegion
- @param LegacyMemorySourceAddress Source of data
-
- @retval EFI_SUCCESS The data was copied successfully.
- @retval EFI_ACCESS_DENIED Either the starting or ending address is out of bounds.
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosCopyLegacyRegion (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINTN LegacyMemorySize,
- IN VOID *LegacyMemoryAddress,
- IN VOID *LegacyMemorySourceAddress
- )
-{
- LEGACY_BIOS_INSTANCE *Private;
- UINT32 Granularity;
-
- if ((LegacyMemoryAddress < (VOID *)(UINTN)0xE0000) ||
- ((UINTN)LegacyMemoryAddress + LegacyMemorySize > (UINTN)0x100000)
- )
- {
- return EFI_ACCESS_DENIED;
- }
-
- //
- // There is no protection from writes over lapping if this function is
- // called multiple times.
- //
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xE0000, 0x20000, &Granularity);
- CopyMem (LegacyMemoryAddress, LegacyMemorySourceAddress, LegacyMemorySize);
-
- Private->Cpu->FlushDataCache (Private->Cpu, 0xE0000, 0x20000, EfiCpuFlushTypeWriteBackInvalidate);
- Private->LegacyRegion->Lock (Private->LegacyRegion, 0xE0000, 0x20000, &Granularity);
-
- return EFI_SUCCESS;
-}
-
-/**
- Find Legacy16 BIOS image in the FLASH device and shadow it into memory. Find
- the $EFI table in the shadow area. Thunk into the Legacy16 code after it had
- been shadowed.
-
- @param Private Legacy BIOS context data
-
- @retval EFI_SUCCESS Legacy16 code loaded
- @retval Other No protocol installed, unload driver.
-
-**/
-EFI_STATUS
-ShadowAndStartLegacy16 (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- UINT8 *Ptr;
- UINT8 *PtrEnd;
- BOOLEAN Done;
- EFI_COMPATIBILITY16_TABLE *Table;
- UINT8 CheckSum;
- EFI_IA32_REGISTER_SET Regs;
- EFI_TO_COMPATIBILITY16_INIT_TABLE *EfiToLegacy16InitTable;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;
- VOID *LegacyBiosImage;
- UINTN LegacyBiosImageSize;
- UINTN E820Size;
- UINT32 *ClearPtr;
- BBS_TABLE *BbsTable;
- LEGACY_EFI_HDD_TABLE *LegacyEfiHddTable;
- UINTN Index;
- UINT32 TpmPointer;
- VOID *TpmBinaryImage;
- UINTN TpmBinaryImageSize;
- UINTN Location;
- UINTN Alignment;
- UINTN TempData;
- EFI_PHYSICAL_ADDRESS Address;
- UINT16 OldMask;
- UINT16 NewMask;
- UINT32 Granularity;
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;
-
- Location = 0;
- Alignment = 0;
-
- //
- // we allocate the C/D/E/F segment as RT code so no one will use it any more.
- //
- Address = 0xC0000;
- gDS->GetMemorySpaceDescriptor (Address, &Descriptor);
- if (Descriptor.GcdMemoryType == EfiGcdMemoryTypeSystemMemory) {
- //
- // If it is already reserved, we should be safe, or else we allocate it.
- //
- Status = gBS->AllocatePages (
- AllocateAddress,
- EfiRuntimeServicesCode,
- 0x40000/EFI_PAGE_SIZE,
- &Address
- );
- if (EFI_ERROR (Status)) {
- //
- // Bugbug: need to figure out whether C/D/E/F segment should be marked as reserved memory.
- //
- DEBUG ((DEBUG_ERROR, "Failed to allocate the C/D/E/F segment Status = %r", Status));
- }
- }
-
- //
- // start testtest
- // GetTimerValue (&Ticker);
- //
- // gRT->SetVariable (L"StartLegacy",
- // &gEfiGlobalVariableGuid,
- // EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- // sizeof (UINT64),
- // (VOID *)&Ticker
- // );
- // end testtest
- //
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;
- Status = Private->LegacyBiosPlatform->GetPlatformInfo (
- Private->LegacyBiosPlatform,
- EfiGetPlatformBinarySystemRom,
- &LegacyBiosImage,
- &LegacyBiosImageSize,
- &Location,
- &Alignment,
- 0,
- 0
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Private->BiosStart = (UINT32)(0x100000 - LegacyBiosImageSize);
- Private->OptionRom = 0xc0000;
- Private->LegacyBiosImageSize = (UINT32)LegacyBiosImageSize;
-
- //
- // Can only shadow into memory allocated for legacy usage.
- //
- ASSERT (Private->BiosStart > Private->OptionRom);
-
- //
- // Shadow Legacy BIOS. Turn on memory and copy image
- //
- Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xc0000, 0x40000, &Granularity);
-
- ClearPtr = (VOID *)((UINTN)0xc0000);
-
- //
- // Initialize region from 0xc0000 to start of BIOS to all ffs. This allows unused
- // regions to be used by EMM386 etc.
- //
- SetMem ((VOID *)ClearPtr, (UINTN)(0x40000 - LegacyBiosImageSize), 0xff);
-
- TempData = Private->BiosStart;
-
- CopyMem (
- (VOID *)TempData,
- LegacyBiosImage,
- (UINTN)LegacyBiosImageSize
- );
-
- Private->Cpu->FlushDataCache (Private->Cpu, 0xc0000, 0x40000, EfiCpuFlushTypeWriteBackInvalidate);
-
- //
- // Search for Legacy16 table in Shadowed ROM
- //
- Done = FALSE;
- Table = NULL;
- for (Ptr = (UINT8 *)TempData; Ptr < (UINT8 *)((UINTN)0x100000) && !Done; Ptr += 0x10) {
- if (*(UINT32 *)Ptr == SIGNATURE_32 ('I', 'F', 'E', '$')) {
- Table = (EFI_COMPATIBILITY16_TABLE *)Ptr;
- PtrEnd = Ptr + Table->TableLength;
- for (CheckSum = 0; Ptr < PtrEnd; Ptr++) {
- CheckSum = (UINT8)(CheckSum +*Ptr);
- }
-
- Done = TRUE;
- }
- }
-
- if (Table == NULL) {
- DEBUG ((DEBUG_ERROR, "No Legacy16 table found\n"));
- return EFI_NOT_FOUND;
- }
-
- if (!Done) {
- //
- // Legacy16 table header checksum error.
- //
- DEBUG ((DEBUG_ERROR, "Legacy16 table found with bad talbe header checksum\n"));
- }
-
- //
- // Remember location of the Legacy16 table
- //
- Private->Legacy16Table = Table;
- Private->Legacy16CallSegment = Table->Compatibility16CallSegment;
- Private->Legacy16CallOffset = Table->Compatibility16CallOffset;
- EfiToLegacy16InitTable = &Private->IntThunk->EfiToLegacy16InitTable;
- Private->Legacy16InitPtr = EfiToLegacy16InitTable;
- Private->Legacy16BootPtr = &Private->IntThunk->EfiToLegacy16BootTable;
- Private->InternalIrqRoutingTable = NULL;
- Private->NumberIrqRoutingEntries = 0;
- Private->BbsTablePtr = NULL;
- Private->LegacyEfiHddTable = NULL;
- Private->DiskEnd = 0;
- Private->Disk4075 = 0;
- Private->HddTablePtr = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo;
- Private->NumberHddControllers = MAX_IDE_CONTROLLER;
- Private->Dump[0] = 'D';
- Private->Dump[1] = 'U';
- Private->Dump[2] = 'M';
- Private->Dump[3] = 'P';
-
- ZeroMem (
- Private->Legacy16BootPtr,
- sizeof (EFI_TO_COMPATIBILITY16_BOOT_TABLE)
- );
-
- //
- // Store away a copy of the EFI System Table
- //
- Table->EfiSystemTable = (UINT32)(UINTN)gST;
-
- //
- // IPF CSM integration -Bug
- //
- // Construct the Legacy16 boot memory map. This sets up number of
- // E820 entries.
- //
- LegacyBiosBuildE820 (Private, &E820Size);
- //
- // Initialize BDA and EBDA standard values needed to load Legacy16 code
- //
- LegacyBiosInitBda (Private);
- LegacyBiosInitCmos (Private);
-
- //
- // All legacy interrupt should be masked when do initialization work from legacy 16 code.
- //
- Private->Legacy8259->GetMask (Private->Legacy8259, &OldMask, NULL, NULL, NULL);
- NewMask = 0xFFFF;
- Private->Legacy8259->SetMask (Private->Legacy8259, &NewMask, NULL, NULL, NULL);
-
- //
- // Call into Legacy16 code to do an INIT
- //
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16InitializeYourself;
- Regs.X.ES = EFI_SEGMENT (*((UINT32 *)&EfiToLegacy16InitTable));
- Regs.X.BX = EFI_OFFSET (*((UINT32 *)&EfiToLegacy16InitTable));
-
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Table->Compatibility16CallSegment,
- Table->Compatibility16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- //
- // Restore original legacy interrupt mask value
- //
- Private->Legacy8259->SetMask (Private->Legacy8259, &OldMask, NULL, NULL, NULL);
-
- if (Regs.X.AX != 0) {
- return EFI_DEVICE_ERROR;
- }
-
- //
- // start testtest
- // GetTimerValue (&Ticker);
- //
- // gRT->SetVariable (L"BackFromInitYourself",
- // &gEfiGlobalVariableGuid,
- // EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- // sizeof (UINT64),
- // (VOID *)&Ticker
- // );
- // end testtest
- //
- // Copy E820 table after InitializeYourself is completed
- //
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16GetTableAddress;
- Regs.X.CX = (UINT16)E820Size;
- Regs.X.DX = 1;
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Table->Compatibility16CallSegment,
- Table->Compatibility16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- Table->E820Pointer = (UINT32)(Regs.X.DS * 16 + Regs.X.BX);
- Table->E820Length = (UINT32)E820Size;
- if (Regs.X.AX != 0) {
- DEBUG ((DEBUG_ERROR, "Legacy16 E820 length insufficient\n"));
- } else {
- TempData = Table->E820Pointer;
- CopyMem ((VOID *)TempData, Private->E820Table, E820Size);
- }
-
- //
- // Get PnPInstallationCheck Info.
- //
- Private->PnPInstallationCheckSegment = Table->PnPInstallationCheckSegment;
- Private->PnPInstallationCheckOffset = Table->PnPInstallationCheckOffset;
-
- //
- // Check if PCI Express is supported. If yes, Save base address.
- //
- Status = Private->LegacyBiosPlatform->GetPlatformInfo (
- Private->LegacyBiosPlatform,
- EfiGetPlatformPciExpressBase,
- NULL,
- NULL,
- &Location,
- &Alignment,
- 0,
- 0
- );
- if (!EFI_ERROR (Status)) {
- Private->Legacy16Table->PciExpressBase = (UINT32)Location;
- Location = 0;
- }
-
- //
- // Check if TPM is supported. If yes get a region in E0000,F0000 to copy it
- // into, copy it and update pointer to binary image. This needs to be
- // done prior to any OPROM for security purposes.
- //
- Status = Private->LegacyBiosPlatform->GetPlatformInfo (
- Private->LegacyBiosPlatform,
- EfiGetPlatformBinaryTpmBinary,
- &TpmBinaryImage,
- &TpmBinaryImageSize,
- &Location,
- &Alignment,
- 0,
- 0
- );
- if (!EFI_ERROR (Status)) {
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16GetTableAddress;
- Regs.X.CX = (UINT16)TpmBinaryImageSize;
- Regs.X.DX = 1;
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Table->Compatibility16CallSegment,
- Table->Compatibility16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- TpmPointer = (UINT32)(Regs.X.DS * 16 + Regs.X.BX);
- if (Regs.X.AX != 0) {
- DEBUG ((DEBUG_ERROR, "TPM cannot be loaded\n"));
- } else {
- CopyMem ((VOID *)(UINTN)TpmPointer, TpmBinaryImage, TpmBinaryImageSize);
- Table->TpmSegment = Regs.X.DS;
- Table->TpmOffset = Regs.X.BX;
- }
- }
-
- //
- // Lock the Legacy BIOS region
- //
- Private->Cpu->FlushDataCache (Private->Cpu, Private->BiosStart, (UINT32)LegacyBiosImageSize, EfiCpuFlushTypeWriteBackInvalidate);
- Private->LegacyRegion->Lock (Private->LegacyRegion, Private->BiosStart, (UINT32)LegacyBiosImageSize, &Granularity);
-
- //
- // Get the BbsTable from LOW_MEMORY_THUNK
- //
- BbsTable = (BBS_TABLE *)(UINTN)Private->IntThunk->BbsTable;
- ZeroMem ((VOID *)BbsTable, sizeof (Private->IntThunk->BbsTable));
-
- EfiToLegacy16BootTable->BbsTable = (UINT32)(UINTN)BbsTable;
- Private->BbsTablePtr = (VOID *)BbsTable;
-
- //
- // Populate entire table with BBS_IGNORE_ENTRY
- //
- EfiToLegacy16BootTable->NumberBbsEntries = MAX_BBS_ENTRIES;
-
- for (Index = 0; Index < MAX_BBS_ENTRIES; Index++) {
- BbsTable[Index].BootPriority = BBS_IGNORE_ENTRY;
- }
-
- //
- // Allocate space for Legacy HDD table
- //
- LegacyEfiHddTable = (LEGACY_EFI_HDD_TABLE *)AllocateZeroPool ((UINTN)MAX_HDD_ENTRIES * sizeof (LEGACY_EFI_HDD_TABLE));
- ASSERT (LegacyEfiHddTable);
-
- Private->LegacyEfiHddTable = LegacyEfiHddTable;
- Private->LegacyEfiHddTableIndex = 0x00;
-
- //
- // start testtest
- // GetTimerValue (&Ticker);
- //
- // gRT->SetVariable (L"EndOfLoadFv",
- // &gEfiGlobalVariableGuid,
- // EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- // sizeof (UINT64),
- // (VOID *)&Ticker
- // );
- // end testtest
- //
- return EFI_SUCCESS;
-}
-
-/**
- Shadow all legacy16 OPROMs that haven't been shadowed.
- Warning: Use this with caution. This routine disconnects all EFI
- drivers. If used externally then caller must re-connect EFI
- drivers.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS OPROMs shadowed
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosShadowAllLegacyOproms (
- IN EFI_LEGACY_BIOS_PROTOCOL *This
- )
-{
- LEGACY_BIOS_INSTANCE *Private;
-
- //
- // EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;
- // EFI_LEGACY16_TABLE *Legacy16Table;
- //
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
-
- //
- // LegacyBiosPlatform = Private->LegacyBiosPlatform;
- // Legacy16Table = Private->Legacy16Table;
- //
- // Shadow PCI ROMs. We must do this near the end since this will kick
- // of Native EFI drivers that may be needed to collect info for Legacy16
- //
- // WARNING: PciIo is gone after this call.
- //
- PciProgramAllInterruptLineRegisters (Private);
-
- PciShadowRoms (Private);
-
- //
- // Shadow PXE base code, BIS etc.
- //
- // LegacyBiosPlatform->ShadowServiceRoms (LegacyBiosPlatform,
- // &Private->OptionRom,
- // Legacy16Table);
- //
- return EFI_SUCCESS;
-}
-
-/**
- Get the PCI BIOS interface version.
-
- @param Private Driver private data.
-
- @return The PCI interface version number in Binary Coded Decimal (BCD) format.
- E.g.: 0x0210 indicates 2.10, 0x0300 indicates 3.00
-
-**/
-UINT16
-GetPciInterfaceVersion (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_IA32_REGISTER_SET Reg;
- BOOLEAN ThunkFailed;
- UINT16 PciInterfaceVersion;
-
- PciInterfaceVersion = 0;
-
- Reg.X.AX = 0xB101;
- Reg.E.EDI = 0;
-
- ThunkFailed = Private->LegacyBios.Int86 (&Private->LegacyBios, 0x1A, &Reg);
- if (!ThunkFailed) {
- //
- // From PCI Firmware 3.0 Specification:
- // If the CARRY FLAG [CF] is cleared and AH is set to 00h, it is still necessary to examine the
- // contents of [EDX] for the presence of the string "PCI" + (trailing space) to fully validate the
- // presence of the PCI function set. [BX] will further indicate the version level, with enough
- // granularity to allow for incremental changes in the code that don't affect the function interface.
- // Version numbers are stored as Binary Coded Decimal (BCD) values. For example, Version 2.10
- // would be returned as a 02h in the [BH] registers and 10h in the [BL] registers.
- //
- if ((Reg.X.Flags.CF == 0) && (Reg.H.AH == 0) && (Reg.E.EDX == SIGNATURE_32 ('P', 'C', 'I', ' '))) {
- PciInterfaceVersion = Reg.X.BX;
- }
- }
-
- return PciInterfaceVersion;
-}
-
-/**
- Callback function to calculate SMBIOS table size, and allocate memory for SMBIOS table.
- SMBIOS table will be copied into EfiReservedMemoryType memory in legacy boot path.
-
- @param Event Event whose notification function is being invoked.
- @param Context The pointer to the notification function's context,
- which is implementation-dependent.
-
-**/
-VOID
-EFIAPI
-InstallSmbiosEventCallback (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- EFI_STATUS Status;
- SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;
-
- //
- // Get SMBIOS table from EFI configuration table
- //
- Status = EfiGetSystemConfigurationTable (
- &gEfiSmbiosTableGuid,
- &mRuntimeSmbiosEntryPoint
- );
- if ((EFI_ERROR (Status)) || (mRuntimeSmbiosEntryPoint == NULL)) {
- return;
- }
-
- EntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *)mRuntimeSmbiosEntryPoint;
-
- //
- // Allocate memory for SMBIOS Entry Point Structure.
- // CSM framework spec requires SMBIOS table below 4GB in EFI_TO_COMPATIBILITY16_BOOT_TABLE.
- //
- if (mReserveSmbiosEntryPoint == 0) {
- //
- // Entrypoint structure with fixed size is allocated only once.
- //
- mReserveSmbiosEntryPoint = SIZE_4GB - 1;
- Status = gBS->AllocatePages (
- AllocateMaxAddress,
- EfiReservedMemoryType,
- EFI_SIZE_TO_PAGES ((UINTN)(EntryPointStructure->EntryPointLength)),
- &mReserveSmbiosEntryPoint
- );
- if (EFI_ERROR (Status)) {
- mReserveSmbiosEntryPoint = 0;
- return;
- }
-
- DEBUG ((DEBUG_INFO, "Allocate memory for Smbios Entry Point Structure\n"));
- }
-
- if ((mStructureTableAddress != 0) &&
- (mStructureTablePages < EFI_SIZE_TO_PAGES ((UINT32)EntryPointStructure->TableLength)))
- {
- //
- // If original buffer is not enough for the new SMBIOS table, free original buffer and re-allocate
- //
- gBS->FreePages (mStructureTableAddress, mStructureTablePages);
- mStructureTableAddress = 0;
- mStructureTablePages = 0;
- DEBUG ((DEBUG_INFO, "Original size is not enough. Re-allocate the memory.\n"));
- }
-
- if (mStructureTableAddress == 0) {
- //
- // Allocate reserved memory below 4GB.
- // Smbios spec requires the structure table is below 4GB.
- //
- mStructureTableAddress = SIZE_4GB - 1;
- mStructureTablePages = EFI_SIZE_TO_PAGES (EntryPointStructure->TableLength);
- Status = gBS->AllocatePages (
- AllocateMaxAddress,
- EfiReservedMemoryType,
- mStructureTablePages,
- &mStructureTableAddress
- );
- if (EFI_ERROR (Status)) {
- gBS->FreePages (
- mReserveSmbiosEntryPoint,
- EFI_SIZE_TO_PAGES ((UINTN)(EntryPointStructure->EntryPointLength))
- );
- mReserveSmbiosEntryPoint = 0;
- mStructureTableAddress = 0;
- mStructureTablePages = 0;
- return;
- }
-
- DEBUG ((DEBUG_INFO, "Allocate memory for Smbios Structure Table\n"));
- }
-}
-
-/**
- Callback function to toggle EndOfDxe status. NULL pointer detection needs
- this status to decide if it's necessary to change attributes of page 0.
-
- @param Event Event whose notification function is being invoked.
- @param Context The pointer to the notification function's context,
- which is implementation-dependent.
-
-**/
-VOID
-EFIAPI
-ToggleEndOfDxeStatus (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- mEndOfDxe = TRUE;
- return;
-}
-
-/**
- Install Driver to produce Legacy BIOS protocol.
-
- @param ImageHandle Handle of driver image.
- @param SystemTable Pointer to system table.
-
- @retval EFI_SUCCESS Legacy BIOS protocol installed
- @retval No protocol installed, unload driver.
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosInstall (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
- LEGACY_BIOS_INSTANCE *Private;
- EFI_TO_COMPATIBILITY16_INIT_TABLE *EfiToLegacy16InitTable;
- EFI_PHYSICAL_ADDRESS MemoryAddress;
- EFI_PHYSICAL_ADDRESS EbdaReservedBaseAddress;
- VOID *MemoryPtr;
- EFI_PHYSICAL_ADDRESS MemoryAddressUnder1MB;
- UINTN Index;
- UINT32 *BaseVectorMaster;
- EFI_PHYSICAL_ADDRESS StartAddress;
- UINT32 *ClearPtr;
- EFI_PHYSICAL_ADDRESS MemStart;
- UINT32 IntRedirCode;
- UINT32 Granularity;
- BOOLEAN DecodeOn;
- UINT32 MemorySize;
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;
- UINT64 Length;
- UINT8 *SecureBoot;
- EFI_EVENT InstallSmbiosEvent;
- EFI_EVENT EndOfDxeEvent;
-
- //
- // Load this driver's image to memory
- //
- Status = RelocateImageUnder4GIfNeeded (ImageHandle, SystemTable);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // When UEFI Secure Boot is enabled, CSM module will not start any more.
- //
- SecureBoot = NULL;
- GetEfiGlobalVariable2 (EFI_SECURE_BOOT_MODE_NAME, (VOID **)&SecureBoot, NULL);
- if ((SecureBoot != NULL) && (*SecureBoot == SECURE_BOOT_MODE_ENABLE)) {
- FreePool (SecureBoot);
- return EFI_SECURITY_VIOLATION;
- }
-
- if (SecureBoot != NULL) {
- FreePool (SecureBoot);
- }
-
- Private = &mPrivateData;
- ZeroMem (Private, sizeof (LEGACY_BIOS_INSTANCE));
-
- //
- // Grab a copy of all the protocols we depend on. Any error would
- // be a dispatcher bug!.
- //
- Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&Private->Cpu);
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **)&Private->Timer);
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->LocateProtocol (&gEfiLegacyRegion2ProtocolGuid, NULL, (VOID **)&Private->LegacyRegion);
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->LocateProtocol (&gEfiLegacyBiosPlatformProtocolGuid, NULL, (VOID **)&Private->LegacyBiosPlatform);
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->LocateProtocol (&gEfiLegacy8259ProtocolGuid, NULL, (VOID **)&Private->Legacy8259);
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->LocateProtocol (&gEfiLegacyInterruptProtocolGuid, NULL, (VOID **)&Private->LegacyInterrupt);
- ASSERT_EFI_ERROR (Status);
-
- //
- // Locate Memory Test Protocol if exists
- //
- Status = gBS->LocateProtocol (
- &gEfiGenericMemTestProtocolGuid,
- NULL,
- (VOID **)&Private->GenericMemoryTest
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Make sure all memory from 0-640K is tested
- //
- for (StartAddress = 0; StartAddress < 0xa0000; ) {
- gDS->GetMemorySpaceDescriptor (StartAddress, &Descriptor);
- if (Descriptor.GcdMemoryType != EfiGcdMemoryTypeReserved) {
- StartAddress = Descriptor.BaseAddress + Descriptor.Length;
- continue;
- }
-
- Length = MIN (Descriptor.Length, 0xa0000 - StartAddress);
- Private->GenericMemoryTest->CompatibleRangeTest (
- Private->GenericMemoryTest,
- StartAddress,
- Length
- );
- StartAddress = StartAddress + Length;
- }
-
- //
- // Make sure all memory from 1MB to 16MB is tested and added to memory map
- //
- for (StartAddress = BASE_1MB; StartAddress < BASE_16MB; ) {
- gDS->GetMemorySpaceDescriptor (StartAddress, &Descriptor);
- if (Descriptor.GcdMemoryType != EfiGcdMemoryTypeReserved) {
- StartAddress = Descriptor.BaseAddress + Descriptor.Length;
- continue;
- }
-
- Length = MIN (Descriptor.Length, BASE_16MB - StartAddress);
- Private->GenericMemoryTest->CompatibleRangeTest (
- Private->GenericMemoryTest,
- StartAddress,
- Length
- );
- StartAddress = StartAddress + Length;
- }
-
- Private->Signature = LEGACY_BIOS_INSTANCE_SIGNATURE;
-
- Private->LegacyBios.Int86 = LegacyBiosInt86;
- Private->LegacyBios.FarCall86 = LegacyBiosFarCall86;
- Private->LegacyBios.CheckPciRom = LegacyBiosCheckPciRom;
- Private->LegacyBios.InstallPciRom = LegacyBiosInstallPciRom;
- Private->LegacyBios.LegacyBoot = LegacyBiosLegacyBoot;
- Private->LegacyBios.UpdateKeyboardLedStatus = LegacyBiosUpdateKeyboardLedStatus;
- Private->LegacyBios.GetBbsInfo = LegacyBiosGetBbsInfo;
- Private->LegacyBios.ShadowAllLegacyOproms = LegacyBiosShadowAllLegacyOproms;
- Private->LegacyBios.PrepareToBootEfi = LegacyBiosPrepareToBootEfi;
- Private->LegacyBios.GetLegacyRegion = LegacyBiosGetLegacyRegion;
- Private->LegacyBios.CopyLegacyRegion = LegacyBiosCopyLegacyRegion;
- Private->LegacyBios.BootUnconventionalDevice = LegacyBiosBootUnconventionalDevice;
-
- Private->ImageHandle = ImageHandle;
-
- //
- // Enable read attribute of legacy region.
- //
- DecodeOn = TRUE;
- Private->LegacyRegion->Decode (
- Private->LegacyRegion,
- 0xc0000,
- 0x40000,
- &Granularity,
- &DecodeOn
- );
- //
- // Set Cachebility for legacy region
- // BUGBUG: Comments about this legacy region cacheability setting
- // This setting will make D865GCHProduction CSM Unhappy
- //
- if (PcdGetBool (PcdLegacyBiosCacheLegacyRegion)) {
- gDS->SetMemorySpaceAttributes (
- 0x0,
- 0xA0000,
- EFI_MEMORY_WB
- );
- gDS->SetMemorySpaceAttributes (
- 0xc0000,
- 0x40000,
- EFI_MEMORY_WB
- );
- }
-
- gDS->SetMemorySpaceAttributes (
- 0xA0000,
- 0x20000,
- EFI_MEMORY_UC
- );
-
- //
- // Allocate 0 - 4K for real mode interrupt vectors and BDA.
- //
- AllocateLegacyMemory (
- AllocateAddress,
- EfiReservedMemoryType,
- 0,
- 1,
- &MemoryAddress
- );
- ASSERT (MemoryAddress == 0x000000000);
-
- ClearPtr = (VOID *)((UINTN)0x0000);
-
- //
- // Initialize region from 0x0000 to 4k. This initializes interrupt vector
- // range.
- //
- ACCESS_PAGE0_CODE (
- gBS->SetMem ((VOID *)ClearPtr, 0x400, INITIAL_VALUE_BELOW_1K);
- ZeroMem ((VOID *)((UINTN)ClearPtr + 0x400), 0xC00);
- );
-
- //
- // Allocate pages for OPROM usage
- //
- MemorySize = PcdGet32 (PcdEbdaReservedMemorySize);
- ASSERT ((MemorySize & 0xFFF) == 0);
-
- Status = AllocateLegacyMemory (
- AllocateAddress,
- EfiReservedMemoryType,
- CONVENTIONAL_MEMORY_TOP - MemorySize,
- EFI_SIZE_TO_PAGES (MemorySize),
- &MemoryAddress
- );
- ASSERT_EFI_ERROR (Status);
-
- ZeroMem ((VOID *)((UINTN)MemoryAddress), MemorySize);
-
- //
- // Allocate all 32k chunks from 0x60000 ~ 0x88000 for Legacy OPROMs that
- // don't use PMM but look for zeroed memory. Note that various non-BBS
- // OpROMs expect different areas to be free
- //
- EbdaReservedBaseAddress = MemoryAddress;
- MemoryAddress = PcdGet32 (PcdOpromReservedMemoryBase);
- MemorySize = PcdGet32 (PcdOpromReservedMemorySize);
- //
- // Check if base address and size for reserved memory are 4KB aligned.
- //
- ASSERT ((MemoryAddress & 0xFFF) == 0);
- ASSERT ((MemorySize & 0xFFF) == 0);
- //
- // Check if the reserved memory is below EBDA reserved range.
- //
- ASSERT ((MemoryAddress < EbdaReservedBaseAddress) && ((MemoryAddress + MemorySize - 1) < EbdaReservedBaseAddress));
- for (MemStart = MemoryAddress; MemStart < MemoryAddress + MemorySize; MemStart += 0x1000) {
- Status = AllocateLegacyMemory (
- AllocateAddress,
- EfiBootServicesCode,
- MemStart,
- 1,
- &StartAddress
- );
- if (!EFI_ERROR (Status)) {
- MemoryPtr = (VOID *)((UINTN)StartAddress);
- ZeroMem (MemoryPtr, 0x1000);
- } else {
- DEBUG ((DEBUG_ERROR, "WARNING: Allocate legacy memory fail for SCSI card - %x\n", MemStart));
- }
- }
-
- //
- // Allocate low PMM memory and zero it out
- //
- MemorySize = PcdGet32 (PcdLowPmmMemorySize);
- ASSERT ((MemorySize & 0xFFF) == 0);
- Status = AllocateLegacyMemory (
- AllocateMaxAddress,
- EfiBootServicesCode,
- CONVENTIONAL_MEMORY_TOP,
- EFI_SIZE_TO_PAGES (MemorySize),
- &MemoryAddressUnder1MB
- );
- ASSERT_EFI_ERROR (Status);
-
- ZeroMem ((VOID *)((UINTN)MemoryAddressUnder1MB), MemorySize);
-
- //
- // Allocate space for thunker and Init Thunker
- //
- Status = AllocateLegacyMemory (
- AllocateMaxAddress,
- EfiReservedMemoryType,
- CONVENTIONAL_MEMORY_TOP,
- (sizeof (LOW_MEMORY_THUNK) / EFI_PAGE_SIZE) + 2,
- &MemoryAddress
- );
- ASSERT_EFI_ERROR (Status);
- Private->IntThunk = (LOW_MEMORY_THUNK *)(UINTN)MemoryAddress;
- EfiToLegacy16InitTable = &Private->IntThunk->EfiToLegacy16InitTable;
- EfiToLegacy16InitTable->ThunkStart = (UINT32)(EFI_PHYSICAL_ADDRESS)(UINTN)MemoryAddress;
- EfiToLegacy16InitTable->ThunkSizeInBytes = (UINT32)(sizeof (LOW_MEMORY_THUNK));
-
- Status = LegacyBiosInitializeThunk (Private);
- ASSERT_EFI_ERROR (Status);
-
- //
- // Init the legacy memory map in memory < 1 MB.
- //
- EfiToLegacy16InitTable->BiosLessThan1MB = (UINT32)MemoryAddressUnder1MB;
- EfiToLegacy16InitTable->LowPmmMemory = (UINT32)MemoryAddressUnder1MB;
- EfiToLegacy16InitTable->LowPmmMemorySizeInBytes = MemorySize;
-
- MemorySize = PcdGet32 (PcdHighPmmMemorySize);
- ASSERT ((MemorySize & 0xFFF) == 0);
- //
- // Allocate high PMM Memory under 16 MB
- //
- Status = AllocateLegacyMemory (
- AllocateMaxAddress,
- EfiBootServicesCode,
- 0x1000000,
- EFI_SIZE_TO_PAGES (MemorySize),
- &MemoryAddress
- );
- if (EFI_ERROR (Status)) {
- //
- // If it fails, allocate high PMM Memory under 4GB
- //
- Status = AllocateLegacyMemory (
- AllocateMaxAddress,
- EfiBootServicesCode,
- 0xFFFFFFFF,
- EFI_SIZE_TO_PAGES (MemorySize),
- &MemoryAddress
- );
- }
-
- if (!EFI_ERROR (Status)) {
- EfiToLegacy16InitTable->HiPmmMemory = (UINT32)(EFI_PHYSICAL_ADDRESS)(UINTN)MemoryAddress;
- EfiToLegacy16InitTable->HiPmmMemorySizeInBytes = MemorySize;
- }
-
- //
- // ShutdownAPs();
- //
- // Start the Legacy BIOS;
- //
- Status = ShadowAndStartLegacy16 (Private);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Initialize interrupt redirection code and entries;
- // IDT Vectors 0x68-0x6f must be redirected to IDT Vectors 0x08-0x0f.
- //
- CopyMem (
- Private->IntThunk->InterruptRedirectionCode,
- (VOID *)(UINTN)InterruptRedirectionTemplate,
- sizeof (Private->IntThunk->InterruptRedirectionCode)
- );
-
- //
- // Save Unexpected interrupt vector so can restore it just prior to boot
- //
- ACCESS_PAGE0_CODE (
- BaseVectorMaster = (UINT32 *)(sizeof (UINT32) * PROTECTED_MODE_BASE_VECTOR_MASTER);
- Private->BiosUnexpectedInt = BaseVectorMaster[0];
- IntRedirCode = (UINT32)(UINTN)Private->IntThunk->InterruptRedirectionCode;
- for (Index = 0; Index < 8; Index++) {
- BaseVectorMaster[Index] = (EFI_SEGMENT (IntRedirCode + Index * 4) << 16) | EFI_OFFSET (IntRedirCode + Index * 4);
- }
-
- );
-
- //
- // Save EFI value
- //
- Private->ThunkSeg = (UINT16)(EFI_SEGMENT (IntRedirCode));
-
- //
- // Allocate reserved memory for SMBIOS table used in legacy boot if SMBIOS table exists
- //
- InstallSmbiosEventCallback (NULL, NULL);
-
- //
- // Create callback function to update the size of reserved memory after LegacyBiosDxe starts
- //
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- InstallSmbiosEventCallback,
- NULL,
- &gEfiSmbiosTableGuid,
- &InstallSmbiosEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Create callback to update status of EndOfDxe, which is needed by NULL
- // pointer detection
- //
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- ToggleEndOfDxeStatus,
- NULL,
- &gEfiEndOfDxeEventGroupGuid,
- &EndOfDxeEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Make a new handle and install the protocol
- //
- Private->Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Private->Handle,
- &gEfiLegacyBiosProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &Private->LegacyBios
- );
- Private->Csm16PciInterfaceVersion = GetPciInterfaceVersion (Private);
-
- DEBUG ((
- DEBUG_INFO,
- "CSM16 PCI BIOS Interface Version: %02x.%02x\n",
- (UINT8)(Private->Csm16PciInterfaceVersion >> 8),
- (UINT8)Private->Csm16PciInterfaceVersion
- ));
- ASSERT (Private->Csm16PciInterfaceVersion != 0);
- return Status;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf deleted file mode 100644 index f6379dc..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf +++ /dev/null @@ -1,129 +0,0 @@ -## @file
-# Legacy Bios Module to support CSM.
-#
-# This driver installs Legacy Bios Protocol to support CSM module work in EFI system.
-#
-# Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
-#
-# SPDX-License-Identifier: BSD-2-Clause-Patent
-#
-##
-
-[Defines]
- INF_VERSION = 0x00010005
- BASE_NAME = LegacyBiosDxe
- MODULE_UNI_FILE = LegacyBiosDxe.uni
- FILE_GUID = 46482D14-7CA1-4977-9DDB-64D747E13DE6
- MODULE_TYPE = DXE_DRIVER
- VERSION_STRING = 1.0
-
- ENTRY_POINT = LegacyBiosInstall
-
-#
-# The following information is for reference only and not required by the build tools.
-#
-# VALID_ARCHITECTURES = IA32 X64
-#
-
-[Sources]
- LegacyCmos.c
- LegacyIde.c
- LegacyBios.c
- LegacyBda.c
- LegacyBiosInterface.h
- LegacyPci.c
-
-[Sources.Ia32]
- IA32/InterruptTable.nasm
- Thunk.c
- LegacyBootSupport.c
- LegacyBbs.c
- LegacySio.c
-
-[Sources.X64]
- X64/InterruptTable.nasm
- Thunk.c
- LegacyBootSupport.c
- LegacyBbs.c
- LegacySio.c
-
-[Packages]
- MdePkg/MdePkg.dec
- MdeModulePkg/MdeModulePkg.dec
- OvmfPkg/OvmfPkg.dec
-
-[LibraryClasses]
- DevicePathLib
- UefiBootServicesTableLib
- MemoryAllocationLib
- UefiDriverEntryPoint
- BaseMemoryLib
- UefiLib
- DebugLib
- DxeServicesTableLib
- PcdLib
- ReportStatusCodeLib
- DebugAgentLib
-
-[LibraryClasses.IA32]
- IoLib
- HobLib
- UefiRuntimeServicesTableLib
- BaseLib
-
-[LibraryClasses.X64]
- IoLib
- HobLib
- UefiRuntimeServicesTableLib
- BaseLib
-
-[Guids]
- gEfiDiskInfoIdeInterfaceGuid ## SOMETIMES_CONSUMES ##GUID #Used in LegacyBiosBuildIdeData() to assure device is a disk
- gEfiSmbiosTableGuid ## SOMETIMES_CONSUMES ##SystemTable
- gEfiLegacyBiosGuid ## SOMETIMES_CONSUMES ##GUID #Used in LegacyBiosInstallVgaRom() to locate handle buffer
- gEfiEndOfDxeEventGroupGuid ## CONSUMES
-
-[Guids.IA32]
- gEfiAcpi20TableGuid ## SOMETIMES_CONSUMES ##SystemTable
- gEfiAcpi10TableGuid ## SOMETIMES_CONSUMES ##SystemTable
-
-[Guids.X64]
- gEfiAcpi20TableGuid ## SOMETIMES_CONSUMES ##SystemTable
- gEfiAcpi10TableGuid ## SOMETIMES_CONSUMES ##SystemTable
-
-
-[Protocols]
- gEfiLoadedImageProtocolGuid ## SOMETIMES_CONSUMES
- gEfiDevicePathProtocolGuid ## SOMETIMES_CONSUMES
- gEfiPciRootBridgeIoProtocolGuid ## SOMETIMES_CONSUMES
- gEfiCpuArchProtocolGuid ## CONSUMES
- gEfiTimerArchProtocolGuid ## CONSUMES
- gEfiIsaIoProtocolGuid ## SOMETIMES_CONSUMES
- gEfiBlockIoProtocolGuid ## SOMETIMES_CONSUMES
- gEfiPciIoProtocolGuid ## SOMETIMES_CONSUMES
- gEfiGenericMemTestProtocolGuid ## CONSUMES
- gEfiDiskInfoProtocolGuid ## SOMETIMES_CONSUMES
- gEfiSimpleTextInProtocolGuid ## SOMETIMES_CONSUMES
- gEfiLegacy8259ProtocolGuid ## CONSUMES
- gEfiLegacyBiosPlatformProtocolGuid ## CONSUMES
- gEfiLegacyInterruptProtocolGuid ## CONSUMES
- gEfiLegacyRegion2ProtocolGuid ## CONSUMES
- gEfiLegacyBiosProtocolGuid ## PRODUCES
- gEfiSerialIoProtocolGuid ## CONSUMES
- gEfiSioProtocolGuid ## CONSUMES
- gEdkiiIoMmuProtocolGuid ## CONSUMES
-
-[Pcd]
- gUefiOvmfPkgTokenSpaceGuid.PcdLegacyBiosCacheLegacyRegion ## CONSUMES
- gUefiOvmfPkgTokenSpaceGuid.PcdEbdaReservedMemorySize ## CONSUMES
- gUefiOvmfPkgTokenSpaceGuid.PcdEndOpromShadowAddress ## SOMETIMES_CONSUMES
- gUefiOvmfPkgTokenSpaceGuid.PcdLowPmmMemorySize ## CONSUMES
- gUefiOvmfPkgTokenSpaceGuid.PcdHighPmmMemorySize ## CONSUMES
- gUefiOvmfPkgTokenSpaceGuid.PcdOpromReservedMemoryBase ## CONSUMES
- gUefiOvmfPkgTokenSpaceGuid.PcdOpromReservedMemorySize ## CONSUMES
-
-[Depex]
- gEfiLegacyRegion2ProtocolGuid AND gEfiLegacyInterruptProtocolGuid AND gEfiLegacyBiosPlatformProtocolGuid AND gEfiLegacy8259ProtocolGuid AND gEfiGenericMemTestProtocolGuid AND gEfiCpuArchProtocolGuid AND gEfiTimerArchProtocolGuid AND gEfiVariableWriteArchProtocolGuid
-
-[UserExtensions.TianoCore."ExtraFiles"]
- LegacyBiosDxeExtra.uni
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.uni b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.uni deleted file mode 100644 index 1a41d6d..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxe.uni +++ /dev/null @@ -1,16 +0,0 @@ -// /** @file
-// Legacy Bios Module to support CSM.
-//
-// This driver installs Legacy Bios Protocol to support CSM module work in EFI system.
-//
-// Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-//
-// SPDX-License-Identifier: BSD-2-Clause-Patent
-//
-// **/
-
-
-#string STR_MODULE_ABSTRACT #language en-US "Legacy Bios Module to support CSM"
-
-#string STR_MODULE_DESCRIPTION #language en-US "This driver installs Legacy Bios Protocol to support CSM module work in a EFI system."
-
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxeExtra.uni b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxeExtra.uni deleted file mode 100644 index a02e783..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosDxeExtra.uni +++ /dev/null @@ -1,14 +0,0 @@ -// /** @file
-// LegacyBiosDxe Localized Strings and Content
-//
-// Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
-//
-// SPDX-License-Identifier: BSD-2-Clause-Patent
-//
-// **/
-
-#string STR_PROPERTIES_MODULE_NAME
-#language en-US
-"Legacy BIOS Support DXE Driver"
-
-
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h deleted file mode 100644 index 5a706d9..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h +++ /dev/null @@ -1,1435 +0,0 @@ -/** @file
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#ifndef _LEGACY_BIOS_INTERFACE_
-#define _LEGACY_BIOS_INTERFACE_
-
-#include <FrameworkDxe.h>
-#include <IndustryStandard/Pci.h>
-#include <IndustryStandard/SmBios.h>
-#include <IndustryStandard/Acpi10.h>
-
-#include <Guid/SmBios.h>
-#include <Guid/Acpi.h>
-#include <Guid/DxeServices.h>
-#include <Guid/LegacyBios.h>
-#include <Guid/StatusCodeDataTypeId.h>
-#include <Guid/ImageAuthentication.h>
-
-#include <Protocol/BlockIo.h>
-#include <Protocol/LoadedImage.h>
-#include <Protocol/PciIo.h>
-#include <Protocol/Cpu.h>
-#include <Protocol/Timer.h>
-#include <Protocol/IsaIo.h>
-#include <Protocol/LegacyRegion2.h>
-#include <Protocol/SimpleTextIn.h>
-#include <Protocol/LegacyInterrupt.h>
-#include <Protocol/LegacyBios.h>
-#include <Protocol/DiskInfo.h>
-#include <Protocol/GenericMemoryTest.h>
-#include <Protocol/LegacyBiosPlatform.h>
-#include <Protocol/DevicePath.h>
-#include <Protocol/Legacy8259.h>
-#include <Protocol/PciRootBridgeIo.h>
-#include <Protocol/SerialIo.h>
-#include <Protocol/SuperIo.h>
-#include <Protocol/IoMmu.h>
-
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include <Library/UefiLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/ReportStatusCodeLib.h>
-#include <Library/UefiRuntimeServicesTableLib.h>
-#include <Library/HobLib.h>
-#include <Library/UefiDriverEntryPoint.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/IoLib.h>
-#include <Library/PcdLib.h>
-#include <Library/DevicePathLib.h>
-#include <Library/DxeServicesTableLib.h>
-#include <Library/DebugAgentLib.h>
-
-//
-// BUGBUG: This entry maybe changed to PCD in future and wait for
-// redesign of BDS library
-//
-#define MAX_BBS_ENTRIES 0x100
-
-//
-// Thunk Status Codes
-// (These apply only to errors with the thunk and not to the code that was
-// thunked to.)
-//
-#define THUNK_OK 0x00
-#define THUNK_ERR_A20_UNSUP 0x01
-#define THUNK_ERR_A20_FAILED 0x02
-
-//
-// Vector base definitions
-//
-//
-// 8259 Hardware definitions
-//
-#define LEGACY_MODE_BASE_VECTOR_MASTER 0x08
-#define LEGACY_MODE_BASE_VECTOR_SLAVE 0x70
-
-//
-// The original PC used INT8-F for master PIC. Since these mapped over
-// processor exceptions TIANO moved the master PIC to INT68-6F.
-//
-// The vector base for slave PIC is set as 0x70 for PC-AT compatibility.
-//
-#define PROTECTED_MODE_BASE_VECTOR_MASTER 0x68
-#define PROTECTED_MODE_BASE_VECTOR_SLAVE 0x70
-
-//
-// When we call CSM16 functions, some CSM16 use es:[offset + 0xabcd] to get data passed from CSM32,
-// offset + 0xabcd could overflow which exceeds 0xFFFF which is invalid in real mode.
-// So this will keep offset as small as possible to avoid offset overflow in real mode.
-//
-#define NORMALIZE_EFI_SEGMENT(_Adr) (UINT16) (((UINTN) (_Adr)) >> 4)
-#define NORMALIZE_EFI_OFFSET(_Adr) (UINT16) (((UINT16) ((UINTN) (_Adr))) & 0xf)
-
-//
-// Trace defines
-//
-//
-#define LEGACY_BDA_TRACE 0x000
-#define LEGACY_BIOS_TRACE 0x040
-#define LEGACY_BOOT_TRACE 0x080
-#define LEGACY_CMOS_TRACE 0x0C0
-#define LEGACY_IDE_TRACE 0x100
-#define LEGACY_MP_TRACE 0x140
-#define LEGACY_PCI_TRACE 0x180
-#define LEGACY_SIO_TRACE 0x1C0
-
-#define LEGACY_PCI_TRACE_000 LEGACY_PCI_TRACE + 0x00
-#define LEGACY_PCI_TRACE_001 LEGACY_PCI_TRACE + 0x01
-#define LEGACY_PCI_TRACE_002 LEGACY_PCI_TRACE + 0x02
-#define LEGACY_PCI_TRACE_003 LEGACY_PCI_TRACE + 0x03
-#define LEGACY_PCI_TRACE_004 LEGACY_PCI_TRACE + 0x04
-#define LEGACY_PCI_TRACE_005 LEGACY_PCI_TRACE + 0x05
-#define LEGACY_PCI_TRACE_006 LEGACY_PCI_TRACE + 0x06
-#define LEGACY_PCI_TRACE_007 LEGACY_PCI_TRACE + 0x07
-#define LEGACY_PCI_TRACE_008 LEGACY_PCI_TRACE + 0x08
-#define LEGACY_PCI_TRACE_009 LEGACY_PCI_TRACE + 0x09
-#define LEGACY_PCI_TRACE_00A LEGACY_PCI_TRACE + 0x0A
-#define LEGACY_PCI_TRACE_00B LEGACY_PCI_TRACE + 0x0B
-#define LEGACY_PCI_TRACE_00C LEGACY_PCI_TRACE + 0x0C
-#define LEGACY_PCI_TRACE_00D LEGACY_PCI_TRACE + 0x0D
-#define LEGACY_PCI_TRACE_00E LEGACY_PCI_TRACE + 0x0E
-#define LEGACY_PCI_TRACE_00F LEGACY_PCI_TRACE + 0x0F
-
-#define BDA_VIDEO_MODE 0x49
-
-#define IDE_PI_REGISTER_PNE BIT0
-#define IDE_PI_REGISTER_SNE BIT2
-
-typedef struct {
- UINTN PciSegment;
- UINTN PciBus;
- UINTN PciDevice;
- UINTN PciFunction;
- UINT32 ShadowAddress;
- UINT32 ShadowedSize;
- UINT8 DiskStart;
- UINT8 DiskEnd;
-} ROM_INSTANCE_ENTRY;
-
-//
-// Values for RealModeGdt
-//
-#if defined (MDE_CPU_IA32)
-
-#define NUM_REAL_GDT_ENTRIES 3
-#define CONVENTIONAL_MEMORY_TOP 0xA0000 // 640 KB
-#define INITIAL_VALUE_BELOW_1K 0x0
-
-#elif defined (MDE_CPU_X64)
-
-#define NUM_REAL_GDT_ENTRIES 8
-#define CONVENTIONAL_MEMORY_TOP 0xA0000 // 640 KB
-#define INITIAL_VALUE_BELOW_1K 0x0
-
-#endif
-
-#pragma pack(1)
-
-//
-// Define what a processor GDT looks like
-//
-typedef struct {
- UINT32 LimitLo : 16;
- UINT32 BaseLo : 16;
- UINT32 BaseMid : 8;
- UINT32 Type : 4;
- UINT32 System : 1;
- UINT32 Dpl : 2;
- UINT32 Present : 1;
- UINT32 LimitHi : 4;
- UINT32 Software : 1;
- UINT32 Reserved : 1;
- UINT32 DefaultSize : 1;
- UINT32 Granularity : 1;
- UINT32 BaseHi : 8;
-} GDT32;
-
-typedef struct {
- UINT16 LimitLow;
- UINT16 BaseLow;
- UINT8 BaseMid;
- UINT8 Attribute;
- UINT8 LimitHi;
- UINT8 BaseHi;
-} GDT64;
-
-//
-// Define what a processor descriptor looks like
-// This data structure must be kept in sync with ASM STRUCT in Thunk.inc
-//
-typedef struct {
- UINT16 Limit;
- UINT64 Base;
-} DESCRIPTOR64;
-
-typedef struct {
- UINT16 Limit;
- UINT32 Base;
-} DESCRIPTOR32;
-
-//
-// Low stub lay out
-//
-#define LOW_STACK_SIZE (8 * 1024) // 8k?
-#define EFI_MAX_E820_ENTRY 100
-#define FIRST_INSTANCE 1
-#define NOT_FIRST_INSTANCE 0
-
-#if defined (MDE_CPU_IA32)
-typedef struct {
- //
- // Space for the code
- // The address of Code is also the beginning of the relocated Thunk code
- //
- CHAR8 Code[4096]; // ?
- //
- // The address of the Reverse Thunk code
- // Note that this member CONTAINS the address of the relocated reverse thunk
- // code unlike the member variable 'Code', which IS the address of the Thunk
- // code.
- //
- UINT32 LowReverseThunkStart;
-
- //
- // Data for the code (cs releative)
- //
- DESCRIPTOR32 GdtDesc; // Protected mode GDT
- DESCRIPTOR32 IdtDesc; // Protected mode IDT
- UINT32 FlatSs;
- UINT32 FlatEsp;
-
- UINT32 LowCodeSelector; // Low code selector in GDT
- UINT32 LowDataSelector; // Low data selector in GDT
- UINT32 LowStack;
- DESCRIPTOR32 RealModeIdtDesc;
-
- //
- // real-mode GDT (temporary GDT with two real mode segment descriptors)
- //
- GDT32 RealModeGdt[NUM_REAL_GDT_ENTRIES];
- DESCRIPTOR32 RealModeGdtDesc;
-
- //
- // Members specifically for the reverse thunk
- // The RevReal* members are used to store the current state of real mode
- // before performing the reverse thunk. The RevFlat* members must be set
- // before calling the reverse thunk assembly code.
- //
- UINT16 RevRealDs;
- UINT16 RevRealSs;
- UINT32 RevRealEsp;
- DESCRIPTOR32 RevRealIdtDesc;
- UINT16 RevFlatDataSelector; // Flat data selector in GDT
- UINT32 RevFlatStack;
-
- //
- // A low memory stack
- //
- CHAR8 Stack[LOW_STACK_SIZE];
-
- //
- // Stack for flat mode after reverse thunk
- // @bug - This may no longer be necessary if the reverse thunk interface
- // is changed to have the flat stack in a different location.
- //
- CHAR8 RevThunkStack[LOW_STACK_SIZE];
-
- //
- // Legacy16 Init memory map info
- //
- EFI_TO_COMPATIBILITY16_INIT_TABLE EfiToLegacy16InitTable;
-
- EFI_TO_COMPATIBILITY16_BOOT_TABLE EfiToLegacy16BootTable;
-
- CHAR8 InterruptRedirectionCode[32];
- EFI_LEGACY_INSTALL_PCI_HANDLER PciHandler;
- EFI_DISPATCH_OPROM_TABLE DispatchOpromTable;
- BBS_TABLE BbsTable[MAX_BBS_ENTRIES];
-} LOW_MEMORY_THUNK;
-
-#elif defined (MDE_CPU_X64)
-
-typedef struct {
- //
- // Space for the code
- // The address of Code is also the beginning of the relocated Thunk code
- //
- CHAR8 Code[4096]; // ?
-
- //
- // Data for the code (cs releative)
- //
- DESCRIPTOR64 X64GdtDesc; // Protected mode GDT
- DESCRIPTOR64 X64IdtDesc; // Protected mode IDT
- UINTN X64Ss;
- UINTN X64Esp;
-
- UINTN RealStack;
- DESCRIPTOR32 RealModeIdtDesc;
- DESCRIPTOR32 RealModeGdtDesc;
-
- //
- // real-mode GDT (temporary GDT with two real mode segment descriptors)
- //
- GDT64 RealModeGdt[NUM_REAL_GDT_ENTRIES];
- UINT64 PageMapLevel4;
-
- //
- // A low memory stack
- //
- CHAR8 Stack[LOW_STACK_SIZE];
-
- //
- // Legacy16 Init memory map info
- //
- EFI_TO_COMPATIBILITY16_INIT_TABLE EfiToLegacy16InitTable;
-
- EFI_TO_COMPATIBILITY16_BOOT_TABLE EfiToLegacy16BootTable;
-
- CHAR8 InterruptRedirectionCode[32];
- EFI_LEGACY_INSTALL_PCI_HANDLER PciHandler;
- EFI_DISPATCH_OPROM_TABLE DispatchOpromTable;
- BBS_TABLE BbsTable[MAX_BBS_ENTRIES];
-} LOW_MEMORY_THUNK;
-
-#endif
-
-//
-// PnP Expansion Header
-//
-typedef struct {
- UINT32 PnpSignature;
- UINT8 Revision;
- UINT8 Length;
- UINT16 NextHeader;
- UINT8 Reserved1;
- UINT8 Checksum;
- UINT32 DeviceId;
- UINT16 MfgPointer;
- UINT16 ProductNamePointer;
- UINT8 Class;
- UINT8 SubClass;
- UINT8 Interface;
- UINT8 DeviceIndicators;
- UINT16 Bcv;
- UINT16 DisconnectVector;
- UINT16 Bev;
- UINT16 Reserved2;
- UINT16 StaticResourceVector;
-} LEGACY_PNP_EXPANSION_HEADER;
-
-typedef struct {
- UINT8 PciSegment;
- UINT8 PciBus;
- UINT8 PciDevice;
- UINT8 PciFunction;
- UINT16 Vid;
- UINT16 Did;
- UINT16 SysSid;
- UINT16 SVid;
- UINT8 Class;
- UINT8 SubClass;
- UINT8 Interface;
- UINT8 Reserved;
- UINTN RomStart;
- UINTN ManufacturerString;
- UINTN ProductNameString;
-} LEGACY_ROM_AND_BBS_TABLE;
-
-//
-// Structure how EFI has mapped a devices HDD drive numbers.
-// Boot to EFI aware OS or shell requires this mapping when
-// 16-bit CSM assigns drive numbers.
-// This mapping is ignored booting to a legacy OS.
-//
-typedef struct {
- UINT8 PciSegment;
- UINT8 PciBus;
- UINT8 PciDevice;
- UINT8 PciFunction;
- UINT8 StartDriveNumber;
- UINT8 EndDriveNumber;
-} LEGACY_EFI_HDD_TABLE;
-
-//
-// This data is passed to Leacy16Boot
-//
-typedef enum {
- EfiAcpiAddressRangeMemory = 1,
- EfiAcpiAddressRangeReserved = 2,
- EfiAcpiAddressRangeACPI = 3,
- EfiAcpiAddressRangeNVS = 4,
- EfiAddressRangePersistentMemory = 7
-} EFI_ACPI_MEMORY_TYPE;
-
-typedef struct {
- UINT64 BaseAddr;
- UINT64 Length;
- EFI_ACPI_MEMORY_TYPE Type;
-} EFI_E820_ENTRY64;
-
-typedef struct {
- UINT32 BassAddrLow;
- UINT32 BaseAddrHigh;
- UINT32 LengthLow;
- UINT32 LengthHigh;
- EFI_ACPI_MEMORY_TYPE Type;
-} EFI_E820_ENTRY;
-
-#pragma pack()
-
-extern BBS_TABLE *mBbsTable;
-
-extern EFI_GENERIC_MEMORY_TEST_PROTOCOL *gGenMemoryTest;
-
-extern BOOLEAN mEndOfDxe;
-
-#define PORT_70 0x70
-#define PORT_71 0x71
-
-#define CMOS_0A 0x0a ///< Status register A
-#define CMOS_0D 0x0d ///< Status register D
-#define CMOS_0E 0x0e ///< Diagnostic Status
-#define CMOS_0F 0x0f ///< Shutdown status
-#define CMOS_10 0x10 ///< Floppy type
-#define CMOS_12 0x12 ///< IDE type
-#define CMOS_14 0x14 ///< Same as BDA 40:10
-#define CMOS_15 0x15 ///< Low byte of base memory in 1k increments
-#define CMOS_16 0x16 ///< High byte of base memory in 1k increments
-#define CMOS_17 0x17 ///< Low byte of 1MB+ memory in 1k increments - max 15 MB
-#define CMOS_18 0x18 ///< High byte of 1MB+ memory in 1k increments - max 15 MB
-#define CMOS_19 0x19 ///< C: extended drive type
-#define CMOS_1A 0x1a ///< D: extended drive type
-#define CMOS_2E 0x2e ///< Most significient byte of standard checksum
-#define CMOS_2F 0x2f ///< Least significient byte of standard checksum
-#define CMOS_30 0x30 ///< CMOS 0x17
-#define CMOS_31 0x31 ///< CMOS 0x18
-#define CMOS_32 0x32 ///< Century byte
-
-//
-// 8254 Timer registers
-//
-#define TIMER0_COUNT_PORT 0x40
-#define TIMER1_COUNT_PORT 0x41
-#define TIMER2_COUNT_PORT 0x42
-#define TIMER_CONTROL_PORT 0x43
-
-//
-// Timer 0, Read/Write LSB then MSB, Square wave output, binary count use.
-//
-#define TIMER0_CONTROL_WORD 0x36
-
-#define LEGACY_BIOS_INSTANCE_SIGNATURE SIGNATURE_32 ('L', 'B', 'I', 'T')
-typedef struct {
- UINTN Signature;
-
- EFI_HANDLE Handle;
- EFI_LEGACY_BIOS_PROTOCOL LegacyBios;
-
- EFI_HANDLE ImageHandle;
-
- //
- // CPU Architectural Protocol
- //
- EFI_CPU_ARCH_PROTOCOL *Cpu;
-
- //
- // Timer Architectural Protocol
- //
- EFI_TIMER_ARCH_PROTOCOL *Timer;
- BOOLEAN TimerUses8254;
-
- //
- // Protocol to Lock and Unlock 0xc0000 - 0xfffff
- //
- EFI_LEGACY_REGION2_PROTOCOL *LegacyRegion;
-
- EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;
-
- //
- // Interrupt control for thunk and PCI IRQ
- //
- EFI_LEGACY_8259_PROTOCOL *Legacy8259;
-
- //
- // PCI Interrupt PIRQ control
- //
- EFI_LEGACY_INTERRUPT_PROTOCOL *LegacyInterrupt;
-
- //
- // Generic Memory Test
- //
- EFI_GENERIC_MEMORY_TEST_PROTOCOL *GenericMemoryTest;
-
- //
- // TRUE if PCI Interrupt Line registers have been programmed.
- //
- BOOLEAN PciInterruptLine;
-
- //
- // Code space below 1MB needed by thunker to transition to real mode.
- // Contains stack and real mode code fragments
- //
- LOW_MEMORY_THUNK *IntThunk;
-
- //
- // Starting shadow address of the Legacy BIOS
- //
- UINT32 BiosStart;
- UINT32 LegacyBiosImageSize;
-
- //
- // Start of variables used by CsmItp.mac ITP macro file and/os LegacyBios
- //
- UINT8 Dump[4];
-
- //
- // $EFI Legacy16 code entry info in memory < 1 MB;
- //
- EFI_COMPATIBILITY16_TABLE *Legacy16Table;
- VOID *Legacy16InitPtr;
- VOID *Legacy16BootPtr;
- VOID *InternalIrqRoutingTable;
- UINT32 NumberIrqRoutingEntries;
- VOID *BbsTablePtr;
- VOID *HddTablePtr;
- UINT32 NumberHddControllers;
-
- //
- // Cached copy of Legacy16 entry point
- //
- UINT16 Legacy16CallSegment;
- UINT16 Legacy16CallOffset;
-
- //
- // Returned from $EFI and passed in to OPROMS
- //
- UINT16 PnPInstallationCheckSegment;
- UINT16 PnPInstallationCheckOffset;
-
- //
- // E820 table
- //
- EFI_E820_ENTRY E820Table[EFI_MAX_E820_ENTRY];
- UINT32 NumberE820Entries;
-
- //
- // True if legacy VGA INT 10h handler installed
- //
- BOOLEAN VgaInstalled;
-
- //
- // Number of IDE drives
- //
- UINT8 IdeDriveCount;
-
- //
- // Current Free Option ROM space. An option ROM must NOT go past
- // BiosStart.
- //
- UINT32 OptionRom;
-
- //
- // Save Legacy16 unexpected interrupt vector. Reprogram INT 68-6F from
- // EFI values to legacy value just before boot.
- //
- UINT32 BiosUnexpectedInt;
- UINT32 ThunkSavedInt[8];
- UINT16 ThunkSeg;
- LEGACY_EFI_HDD_TABLE *LegacyEfiHddTable;
- UINT16 LegacyEfiHddTableIndex;
- UINT8 DiskEnd;
- UINT8 Disk4075;
- UINT16 TraceIndex;
- UINT16 Trace[0x200];
-
- //
- // Indicate that whether GenericLegacyBoot is entered or not
- //
- BOOLEAN LegacyBootEntered;
-
- //
- // CSM16 PCI Interface Version
- //
- UINT16 Csm16PciInterfaceVersion;
-} LEGACY_BIOS_INSTANCE;
-
-#pragma pack(1)
-
-/*
- 40:00-01 Com1
- 40:02-03 Com2
- 40:04-05 Com3
- 40:06-07 Com4
- 40:08-09 Lpt1
- 40:0A-0B Lpt2
- 40:0C-0D Lpt3
- 40:0E-0E Ebda segment
- 40:10-11 MachineConfig
- 40:12 Bda12 - skip
- 40:13-14 MemSize below 1MB
- 40:15-16 Bda15_16 - skip
- 40:17 Keyboard Shift status
- 40:18-19 Bda18_19 - skip
- 40:1A-1B Key buffer head
- 40:1C-1D Key buffer tail
- 40:1E-3D Bda1E_3D- key buffer -skip
- 40:3E-3F FloppyData 3E = Calibration status 3F = Motor status
- 40:40 FloppyTimeout
- 40:41-74 Bda41_74 - skip
- 40:75 Number of HDD drives
- 40:76-77 Bda76_77 - skip
- 40:78-79 78 = Lpt1 timeout, 79 = Lpt2 timeout
- 40:7A-7B 7A = Lpt3 timeout, 7B = Lpt4 timeout
- 40:7C-7D 7C = Com1 timeout, 7D = Com2 timeout
- 40:7E-7F 7E = Com3 timeout, 7F = Com4 timeout
- 40:80-81 Pointer to start of key buffer
- 40:82-83 Pointer to end of key buffer
- 40:84-87 Bda84_87 - skip
- 40:88 HDD Data Xmit rate
- 40:89-8f skip
- 40:90 Floppy data rate
- 40:91-95 skip
- 40:96 Keyboard Status
- 40:97 LED Status
- 40:98-101 skip
-*/
-typedef struct {
- UINT16 Com1;
- UINT16 Com2;
- UINT16 Com3;
- UINT16 Com4;
- UINT16 Lpt1;
- UINT16 Lpt2;
- UINT16 Lpt3;
- UINT16 Ebda;
- UINT16 MachineConfig;
- UINT8 Bda12;
- UINT16 MemSize;
- UINT8 Bda15_16[0x02];
- UINT8 ShiftStatus;
- UINT8 Bda18_19[0x02];
- UINT16 KeyHead;
- UINT16 KeyTail;
- UINT16 Bda1E_3D[0x10];
- UINT16 FloppyData;
- UINT8 FloppyTimeout;
- UINT8 Bda41_74[0x34];
- UINT8 NumberOfDrives;
- UINT8 Bda76_77[0x02];
- UINT16 Lpt1_2Timeout;
- UINT16 Lpt3_4Timeout;
- UINT16 Com1_2Timeout;
- UINT16 Com3_4Timeout;
- UINT16 KeyStart;
- UINT16 KeyEnd;
- UINT8 Bda84_87[0x4];
- UINT8 DataXmit;
- UINT8 Bda89_8F[0x07];
- UINT8 FloppyXRate;
- UINT8 Bda91_95[0x05];
- UINT8 KeyboardStatus;
- UINT8 LedStatus;
-} BDA_STRUC;
-#pragma pack()
-
-#define LEGACY_BIOS_INSTANCE_FROM_THIS(this) CR (this, LEGACY_BIOS_INSTANCE, LegacyBios, LEGACY_BIOS_INSTANCE_SIGNATURE)
-
-/**
- Thunk to 16-bit real mode and execute a software interrupt with a vector
- of BiosInt. Regs will contain the 16-bit register context on entry and
- exit.
-
- @param This Protocol instance pointer.
- @param BiosInt Processor interrupt vector to invoke
- @param Regs Register contexted passed into (and returned) from thunk to
- 16-bit mode
-
- @retval FALSE Thunk completed, and there were no BIOS errors in the target code.
- See Regs for status.
- @retval TRUE There was a BIOS erro in the target code.
-
-**/
-BOOLEAN
-EFIAPI
-LegacyBiosInt86 (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT8 BiosInt,
- IN EFI_IA32_REGISTER_SET *Regs
- );
-
-/**
- Thunk to 16-bit real mode and call Segment:Offset. Regs will contain the
- 16-bit register context on entry and exit. Arguments can be passed on
- the Stack argument
-
- @param This Protocol instance pointer.
- @param Segment Segment of 16-bit mode call
- @param Offset Offset of 16-bit mdoe call
- @param Regs Register contexted passed into (and returned) from
- thunk to 16-bit mode
- @param Stack Caller allocated stack used to pass arguments
- @param StackSize Size of Stack in bytes
-
- @retval FALSE Thunk completed, and there were no BIOS errors in
- the target code. See Regs for status.
- @retval TRUE There was a BIOS erro in the target code.
-
-**/
-BOOLEAN
-EFIAPI
-LegacyBiosFarCall86 (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT16 Segment,
- IN UINT16 Offset,
- IN EFI_IA32_REGISTER_SET *Regs,
- IN VOID *Stack,
- IN UINTN StackSize
- );
-
-/**
- Test to see if a legacy PCI ROM exists for this device. Optionally return
- the Legacy ROM instance for this PCI device.
-
- @param This Protocol instance pointer.
- @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will
- be loaded
- @param RomImage Return the legacy PCI ROM for this device
- @param RomSize Size of ROM Image
- @param Flags Indicates if ROM found and if PC-AT.
-
- @retval EFI_SUCCESS Legacy Option ROM available for this device
- @retval EFI_UNSUPPORTED Legacy Option ROM not supported.
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosCheckPciRom (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_HANDLE PciHandle,
- OUT VOID **RomImage OPTIONAL,
- OUT UINTN *RomSize OPTIONAL,
- OUT UINTN *Flags
- );
-
-/**
- Assign drive number to legacy HDD drives prior to booting an EFI
- aware OS so the OS can access drives without an EFI driver.
- Note: BBS compliant drives ARE NOT available until this call by
- either shell or EFI.
-
- @param This Protocol instance pointer.
- @param BbsCount Number of BBS_TABLE structures
- @param BbsTable List BBS entries
-
- @retval EFI_SUCCESS Drive numbers assigned
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosPrepareToBootEfi (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- OUT UINT16 *BbsCount,
- OUT BBS_TABLE **BbsTable
- );
-
-/**
- To boot from an unconventional device like parties and/or execute
- HDD diagnostics.
-
- @param This Protocol instance pointer.
- @param Attributes How to interpret the other input parameters
- @param BbsEntry The 0-based index into the BbsTable for the parent
- device.
- @param BeerData Pointer to the 128 bytes of ram BEER data.
- @param ServiceAreaData Pointer to the 64 bytes of raw Service Area data.
- The caller must provide a pointer to the specific
- Service Area and not the start all Service Areas.
- EFI_INVALID_PARAMETER if error. Does NOT return if no error.
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosBootUnconventionalDevice (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UDC_ATTRIBUTES Attributes,
- IN UINTN BbsEntry,
- IN VOID *BeerData,
- IN VOID *ServiceAreaData
- );
-
-/**
- Load a legacy PC-AT OPROM on the PciHandle device. Return information
- about how many disks were added by the OPROM and the shadow address and
- size. DiskStart & DiskEnd are INT 13h drive letters. Thus 0x80 is C:
-
- @param This Protocol instance pointer.
- @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will
- be loaded. This value is NULL if RomImage is
- non-NULL. This is the normal case.
- @param RomImage A PCI PC-AT ROM image. This argument is non-NULL
- if there is no hardware associated with the ROM
- and thus no PciHandle, otherwise is must be NULL.
- Example is PXE base code.
- @param Flags Indicates if ROM found and if PC-AT.
- @param DiskStart Disk number of first device hooked by the ROM. If
- DiskStart is the same as DiskEnd no disked were
- hooked.
- @param DiskEnd Disk number of the last device hooked by the ROM.
- @param RomShadowAddress Shadow address of PC-AT ROM
- @param RomShadowedSize Size of RomShadowAddress in bytes
-
- @retval EFI_SUCCESS Legacy ROM loaded for this device
- @retval EFI_INVALID_PARAMETER PciHandle not found
- @retval EFI_UNSUPPORTED There is no PCI ROM in the ROM BAR or no onboard
- ROM
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosInstallPciRom (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_HANDLE PciHandle,
- IN VOID **RomImage,
- OUT UINTN *Flags,
- OUT UINT8 *DiskStart OPTIONAL,
- OUT UINT8 *DiskEnd OPTIONAL,
- OUT VOID **RomShadowAddress OPTIONAL,
- OUT UINT32 *RomShadowedSize OPTIONAL
- );
-
-/**
- Fill in the standard BDA for Keyboard LEDs
-
- @param This Protocol instance pointer.
- @param Leds Current LED status
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosUpdateKeyboardLedStatus (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT8 Leds
- );
-
-/**
- Get all BBS info
-
- @param This Protocol instance pointer.
- @param HddCount Number of HDD_INFO structures
- @param HddInfo Onboard IDE controller information
- @param BbsCount Number of BBS_TABLE structures
- @param BbsTable List BBS entries
-
- @retval EFI_SUCCESS Tables returned
- @retval EFI_NOT_FOUND resource not found
- @retval EFI_DEVICE_ERROR can not get BBS table
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosGetBbsInfo (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- OUT UINT16 *HddCount,
- OUT HDD_INFO **HddInfo,
- OUT UINT16 *BbsCount,
- OUT BBS_TABLE **BbsTable
- );
-
-/**
- Shadow all legacy16 OPROMs that haven't been shadowed.
- Warning: Use this with caution. This routine disconnects all EFI
- drivers. If used externally then caller must re-connect EFI
- drivers.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS OPROMs shadowed
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosShadowAllLegacyOproms (
- IN EFI_LEGACY_BIOS_PROTOCOL *This
- );
-
-/**
- Attempt to legacy boot the BootOption. If the EFI contexted has been
- compromised this function will not return.
-
- @param This Protocol instance pointer.
- @param BbsDevicePath EFI Device Path from BootXXXX variable.
- @param LoadOptionsSize Size of LoadOption in size.
- @param LoadOptions LoadOption from BootXXXX variable
-
- @retval EFI_SUCCESS Removable media not present
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosLegacyBoot (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN BBS_BBS_DEVICE_PATH *BbsDevicePath,
- IN UINT32 LoadOptionsSize,
- IN VOID *LoadOptions
- );
-
-/**
- Allocate memory < 1 MB and copy the thunker code into low memory. Se up
- all the descriptors.
-
- @param Private Private context for Legacy BIOS
-
- @retval EFI_SUCCESS Should only pass.
-
-**/
-EFI_STATUS
-LegacyBiosInitializeThunk (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Fill in the standard BDA and EBDA stuff before Legacy16 load
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosInitBda (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Collect IDE Inquiry data from the IDE disks
-
- @param Private Legacy BIOS Instance data
- @param HddInfo Hdd Information
- @param Flag Reconnect IdeController or not
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosBuildIdeData (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN HDD_INFO **HddInfo,
- IN UINT16 Flag
- );
-
-/**
- Enable ide controller. This gets disabled when LegacyBoot.c is about
- to run the Option ROMs.
-
- @param Private Legacy BIOS Instance data
-
-
-**/
-VOID
-EnableIdeController (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- If the IDE channel is in compatibility (legacy) mode, remove all
- PCI I/O BAR addresses from the controller.
-
- @param IdeController The handle of target IDE controller
-
-
-**/
-VOID
-InitLegacyIdeController (
- IN EFI_HANDLE IdeController
- );
-
-/**
- Program the interrupt routing register in all the PCI devices. On a PC AT system
- this register contains the 8259 IRQ vector that matches its PCI interrupt.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS Succeed.
- @retval EFI_ALREADY_STARTED All PCI devices have been processed.
-
-**/
-EFI_STATUS
-PciProgramAllInterruptLineRegisters (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Collect EFI Info about legacy devices.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosBuildSioData (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Shadow all the PCI legacy ROMs. Use data from the Legacy BIOS Protocol
- to chose the order. Skip any devices that have already have legacy
- BIOS run.
-
- @param Private Protocol instance pointer.
-
- @retval EFI_SUCCESS Succeed.
- @retval EFI_UNSUPPORTED Cannot get VGA device handle.
-
-**/
-EFI_STATUS
-PciShadowRoms (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Fill in the standard BDA and EBDA stuff prior to legacy Boot
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosCompleteBdaBeforeBoot (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Fill in the standard CMOS stuff before Legacy16 load
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosInitCmos (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Fill in the standard CMOS stuff prior to legacy Boot
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosCompleteStandardCmosBeforeBoot (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Contains the code that is copied into low memory (below 640K).
- This code reflects interrupts 0x68-0x6f to interrupts 0x08-0x0f.
- This template must be copied into low memory, and the IDT entries
- 0x68-0x6F must be point to the low memory copy of this code. Each
- entry is 4 bytes long, so IDT entries 0x68-0x6F can be easily
- computed.
-
-**/
-VOID
-InterruptRedirectionTemplate (
- VOID
- );
-
-/**
- Build the E820 table.
-
- @param Private Legacy BIOS Instance data
- @param Size Size of E820 Table
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosBuildE820 (
- IN LEGACY_BIOS_INSTANCE *Private,
- OUT UINTN *Size
- );
-
-/**
- This function is to put all AP in halt state.
-
- @param Private Legacy BIOS Instance data
-
-**/
-VOID
-ShutdownAPs (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Worker function for LegacyBiosGetFlatDescs, retrieving content of
- specific registers.
-
- @param IntThunk Pointer to IntThunk of Legacy BIOS context.
-
-**/
-VOID
-GetRegisters (
- LOW_MEMORY_THUNK *IntThunk
- );
-
-/**
- Routine for calling real thunk code.
-
- @param RealCode The address of thunk code.
- @param BiosInt The Bios interrupt vector number.
- @param CallAddress The address of 16-bit mode call.
-
- @return Status returned by real thunk code
-
-**/
-UINTN
-CallRealThunkCode (
- UINT8 *RealCode,
- UINT8 BiosInt,
- UINT32 CallAddress
- );
-
-/**
- Routine for generating soft interrupt.
-
- @param Vector The interrupt vector number.
-
-**/
-VOID
-GenerateSoftInit (
- UINT8 Vector
- );
-
-/**
- Allocate memory for legacy usage.
-
- @param AllocateType The type of allocation to perform.
- @param MemoryType The type of memory to allocate.
- @param StartPageAddress Start address of range
- @param Pages Number of pages to allocate
- @param Result Result of allocation
-
- @retval EFI_SUCCESS Legacy16 code loaded
- @retval Other No protocol installed, unload driver.
-
-**/
-EFI_STATUS
-AllocateLegacyMemory (
- IN EFI_ALLOCATE_TYPE AllocateType,
- IN EFI_MEMORY_TYPE MemoryType,
- IN EFI_PHYSICAL_ADDRESS StartPageAddress,
- IN UINTN Pages,
- OUT EFI_PHYSICAL_ADDRESS *Result
- );
-
-/**
- Get a region from the LegacyBios for Tiano usage. Can only be invoked once.
-
- @param This Protocol instance pointer.
- @param LegacyMemorySize Size of required region
- @param Region Region to use. 00 = Either 0xE0000 or 0xF0000
- block Bit0 = 1 0xF0000 block Bit1 = 1 0xE0000
- block
- @param Alignment Address alignment. Bit mapped. First non-zero
- bit from right is alignment.
- @param LegacyMemoryAddress Region Assigned
-
- @retval EFI_SUCCESS Region assigned
- @retval EFI_ACCESS_DENIED Procedure previously invoked
- @retval Other Region not assigned
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosGetLegacyRegion (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINTN LegacyMemorySize,
- IN UINTN Region,
- IN UINTN Alignment,
- OUT VOID **LegacyMemoryAddress
- );
-
-/**
- Get a region from the LegacyBios for Tiano usage. Can only be invoked once.
-
- @param This Protocol instance pointer.
- @param LegacyMemorySize Size of data to copy
- @param LegacyMemoryAddress Legacy Region destination address Note: must
- be in region assigned by
- LegacyBiosGetLegacyRegion
- @param LegacyMemorySourceAddress Source of data
-
- @retval EFI_SUCCESS Region assigned
- @retval EFI_ACCESS_DENIED Destination outside assigned region
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosCopyLegacyRegion (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINTN LegacyMemorySize,
- IN VOID *LegacyMemoryAddress,
- IN VOID *LegacyMemorySourceAddress
- );
-
-/**
- Find Legacy16 BIOS image in the FLASH device and shadow it into memory. Find
- the $EFI table in the shadow area. Thunk into the Legacy16 code after it had
- been shadowed.
-
- @param Private Legacy BIOS context data
-
- @retval EFI_SUCCESS Legacy16 code loaded
- @retval Other No protocol installed, unload driver.
-
-**/
-EFI_STATUS
-ShadowAndStartLegacy16 (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-/**
- Checks the state of the floppy and if media is inserted.
-
- This routine checks the state of the floppy and if media is inserted.
- There are 3 cases:
- No floppy present - Set BBS entry to ignore
- Floppy present & no media - Set BBS entry to lowest priority. We cannot
- set it to ignore since 16-bit CSM will
- indicate no floppy and thus drive A: is
- unusable. CSM-16 will not try floppy since
- lowest priority and thus not incur boot
- time penality.
- Floppy present & media - Set BBS entry to some priority.
-
- @return State of floppy media
-
-**/
-UINT8
-HasMediaInFloppy (
- VOID
- );
-
-/**
- Identify drive data must be updated to actual parameters before boot.
- This requires updating the checksum, if it exists.
-
- @param IdentifyDriveData ATA Identify Data
- @param Checksum checksum of the ATA Identify Data
-
- @retval EFI_SUCCESS checksum calculated
- @retval EFI_SECURITY_VIOLATION IdentifyData invalid
-
-**/
-EFI_STATUS
-CalculateIdentifyDriveChecksum (
- IN UINT8 *IdentifyDriveData,
- OUT UINT8 *Checksum
- );
-
-/**
- Identify drive data must be updated to actual parameters before boot.
-
- @param IdentifyDriveData ATA Identify Data
-
-**/
-VOID
-UpdateIdentifyDriveData (
- IN UINT8 *IdentifyDriveData
- );
-
-/**
- Complete build of BBS TABLE.
-
- @param Private Legacy BIOS Instance data
- @param BbsTable BBS Table passed to 16-bit code
-
- @retval EFI_SUCCESS Removable media not present
-
-**/
-EFI_STATUS
-LegacyBiosBuildBbs (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN BBS_TABLE *BbsTable
- );
-
-/**
- Read CMOS register through index/data port.
-
- @param[in] Index The index of the CMOS register to read.
-
- @return The data value from the CMOS register specified by Index.
-
-**/
-UINT8
-LegacyReadStandardCmos (
- IN UINT8 Index
- );
-
-/**
- Write CMOS register through index/data port.
-
- @param[in] Index The index of the CMOS register to write.
- @param[in] Value The value of CMOS register to write.
-
- @return The value written to the CMOS register specified by Index.
-
-**/
-UINT8
-LegacyWriteStandardCmos (
- IN UINT8 Index,
- IN UINT8 Value
- );
-
-/**
- Calculate the new standard CMOS checksum and write it.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS Calculate 16-bit checksum successfully
-
-**/
-EFI_STATUS
-LegacyCalculateWriteStandardCmosChecksum (
- VOID
- );
-
-/**
- Test to see if a legacy PCI ROM exists for this device. Optionally return
- the Legacy ROM instance for this PCI device.
-
- @param[in] This Protocol instance pointer.
- @param[in] PciHandle The PCI PC-AT OPROM from this devices ROM BAR will be loaded
- @param[out] RomImage Return the legacy PCI ROM for this device
- @param[out] RomSize Size of ROM Image
- @param[out] RuntimeImageLength Runtime size of ROM Image
- @param[out] Flags Indicates if ROM found and if PC-AT.
- @param[out] OpromRevision Revision of the PCI Rom
- @param[out] ConfigUtilityCodeHeaderPointer of Configuration Utility Code Header
-
- @return EFI_SUCCESS Legacy Option ROM available for this device
- @return EFI_ALREADY_STARTED This device is already managed by its Oprom
- @return EFI_UNSUPPORTED Legacy Option ROM not supported.
-
-**/
-EFI_STATUS
-LegacyBiosCheckPciRomEx (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_HANDLE PciHandle,
- OUT VOID **RomImage OPTIONAL,
- OUT UINTN *RomSize OPTIONAL,
- OUT UINTN *RuntimeImageLength OPTIONAL,
- OUT UINTN *Flags OPTIONAL,
- OUT UINT8 *OpromRevision OPTIONAL,
- OUT VOID **ConfigUtilityCodeHeader OPTIONAL
- );
-
-/**
- Relocate this image under 4G memory for IPF.
-
- @param ImageHandle Handle of driver image.
- @param SystemTable Pointer to system table.
-
- @retval EFI_SUCCESS Image successfully relocated.
- @retval EFI_ABORTED Failed to relocate image.
-
-**/
-EFI_STATUS
-RelocateImageUnder4GIfNeeded (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- );
-
-/**
- Thunk to 16-bit real mode and call Segment:Offset. Regs will contain the
- 16-bit register context on entry and exit. Arguments can be passed on
- the Stack argument
-
- @param This Protocol instance pointer.
- @param Segment Segment of 16-bit mode call
- @param Offset Offset of 16-bit mdoe call
- @param Regs Register contexted passed into (and returned) from thunk to
- 16-bit mode
- @param Stack Caller allocated stack used to pass arguments
- @param StackSize Size of Stack in bytes
-
- @retval FALSE Thunk completed, and there were no BIOS errors in the target code.
- See Regs for status.
- @retval TRUE There was a BIOS erro in the target code.
-
-**/
-BOOLEAN
-EFIAPI
-InternalLegacyBiosFarCall (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT16 Segment,
- IN UINT16 Offset,
- IN EFI_IA32_REGISTER_SET *Regs,
- IN VOID *Stack,
- IN UINTN StackSize
- );
-
-/**
- Load a legacy PC-AT OpROM for VGA controller.
-
- @param Private Driver private data.
-
- @retval EFI_SUCCESS Legacy ROM successfully installed for this device.
- @retval EFI_DEVICE_ERROR No VGA device handle found, or native EFI video
- driver cannot be successfully disconnected, or VGA
- thunk driver cannot be successfully connected.
-
-**/
-EFI_STATUS
-LegacyBiosInstallVgaRom (
- IN LEGACY_BIOS_INSTANCE *Private
- );
-
-#endif
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c deleted file mode 100644 index 83d94cf..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c +++ /dev/null @@ -1,2212 +0,0 @@ -/** @file
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-#include <IndustryStandard/Pci.h>
-
-#define BOOT_LEGACY_OS 0
-#define BOOT_EFI_OS 1
-#define BOOT_UNCONVENTIONAL_DEVICE 2
-
-UINT32 mLoadOptionsSize = 0;
-UINTN mBootMode = BOOT_LEGACY_OS;
-VOID *mLoadOptions = NULL;
-BBS_BBS_DEVICE_PATH *mBbsDevicePathPtr = NULL;
-BBS_BBS_DEVICE_PATH mBbsDevicePathNode;
-UDC_ATTRIBUTES mAttributes = { 0, 0, 0, 0 };
-UINTN mBbsEntry = 0;
-VOID *mBeerData = NULL;
-VOID *mServiceAreaData = NULL;
-UINT64 mLowWater = 0xffffffffffffffffULL;
-
-extern BBS_TABLE *mBbsTable;
-
-extern VOID *mRuntimeSmbiosEntryPoint;
-extern EFI_PHYSICAL_ADDRESS mReserveSmbiosEntryPoint;
-extern EFI_PHYSICAL_ADDRESS mStructureTableAddress;
-
-/**
- Print the BBS Table.
-
- @param BbsTable The BBS table.
-
-
-**/
-VOID
-PrintBbsTable (
- IN BBS_TABLE *BbsTable
- )
-{
- UINT16 Index;
- UINT16 SubIndex;
- CHAR8 *String;
-
- DEBUG ((DEBUG_INFO, "\n"));
- DEBUG ((DEBUG_INFO, " NO Prio bb/dd/ff cl/sc Type Stat segm:offs mfgs:mfgo dess:deso\n"));
- DEBUG ((DEBUG_INFO, "=================================================================\n"));
- for (Index = 0; Index < MAX_BBS_ENTRIES; Index++) {
- //
- // Filter
- //
- if (BbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) {
- continue;
- }
-
- DEBUG ((
- DEBUG_INFO,
- " %02x: %04x %02x/%02x/%02x %02x/%02x %04x %04x",
- (UINTN)Index,
- (UINTN)BbsTable[Index].BootPriority,
- (UINTN)BbsTable[Index].Bus,
- (UINTN)BbsTable[Index].Device,
- (UINTN)BbsTable[Index].Function,
- (UINTN)BbsTable[Index].Class,
- (UINTN)BbsTable[Index].SubClass,
- (UINTN)BbsTable[Index].DeviceType,
- (UINTN)*(UINT16 *)&BbsTable[Index].StatusFlags
- ));
- DEBUG ((
- DEBUG_INFO,
- " %04x:%04x %04x:%04x %04x:%04x",
- (UINTN)BbsTable[Index].BootHandlerSegment,
- (UINTN)BbsTable[Index].BootHandlerOffset,
- (UINTN)BbsTable[Index].MfgStringSegment,
- (UINTN)BbsTable[Index].MfgStringOffset,
- (UINTN)BbsTable[Index].DescStringSegment,
- (UINTN)BbsTable[Index].DescStringOffset
- ));
-
- //
- // Print DescString
- //
- String = (CHAR8 *)(((UINTN)BbsTable[Index].DescStringSegment << 4) + BbsTable[Index].DescStringOffset);
- if (String != NULL) {
- DEBUG ((DEBUG_INFO, " ("));
- for (SubIndex = 0; String[SubIndex] != 0; SubIndex++) {
- DEBUG ((DEBUG_INFO, "%c", String[SubIndex]));
- }
-
- DEBUG ((DEBUG_INFO, ")"));
- }
-
- DEBUG ((DEBUG_INFO, "\n"));
- }
-
- DEBUG ((DEBUG_INFO, "\n"));
-
- return;
-}
-
-/**
- Print the BBS Table.
-
- @param HddInfo The HddInfo table.
-
-
-**/
-VOID
-PrintHddInfo (
- IN HDD_INFO *HddInfo
- )
-{
- UINTN Index;
-
- DEBUG ((DEBUG_INFO, "\n"));
- for (Index = 0; Index < MAX_IDE_CONTROLLER; Index++) {
- DEBUG ((DEBUG_INFO, "Index - %04x\n", Index));
- DEBUG ((DEBUG_INFO, " Status - %04x\n", (UINTN)HddInfo[Index].Status));
- DEBUG ((DEBUG_INFO, " B/D/F - %02x/%02x/%02x\n", (UINTN)HddInfo[Index].Bus, (UINTN)HddInfo[Index].Device, (UINTN)HddInfo[Index].Function));
- DEBUG ((DEBUG_INFO, " Command - %04x\n", HddInfo[Index].CommandBaseAddress));
- DEBUG ((DEBUG_INFO, " Control - %04x\n", HddInfo[Index].ControlBaseAddress));
- DEBUG ((DEBUG_INFO, " BusMaster - %04x\n", HddInfo[Index].BusMasterAddress));
- DEBUG ((DEBUG_INFO, " HddIrq - %02x\n", HddInfo[Index].HddIrq));
- DEBUG ((DEBUG_INFO, " IdentifyDrive[0].Raw[0] - %x\n", HddInfo[Index].IdentifyDrive[0].Raw[0]));
- DEBUG ((DEBUG_INFO, " IdentifyDrive[1].Raw[0] - %x\n", HddInfo[Index].IdentifyDrive[1].Raw[0]));
- }
-
- DEBUG ((DEBUG_INFO, "\n"));
-
- return;
-}
-
-/**
- Print the PCI Interrupt Line and Interrupt Pin registers.
-**/
-VOID
-PrintPciInterruptRegister (
- VOID
- )
-{
- EFI_STATUS Status;
- UINTN Index;
- EFI_HANDLE *Handles;
- UINTN HandleNum;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINT8 Interrupt[2];
- UINTN Segment;
- UINTN Bus;
- UINTN Device;
- UINTN Function;
-
- gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleNum,
- &Handles
- );
-
- Bus = 0;
- Device = 0;
- Function = 0;
-
- DEBUG ((DEBUG_INFO, "\n"));
- DEBUG ((DEBUG_INFO, " bb/dd/ff interrupt line interrupt pin\n"));
- DEBUG ((DEBUG_INFO, "======================================\n"));
- for (Index = 0; Index < HandleNum; Index++) {
- Status = gBS->HandleProtocol (Handles[Index], &gEfiPciIoProtocolGuid, (VOID **)&PciIo);
- if (!EFI_ERROR (Status)) {
- Status = PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint8,
- PCI_INT_LINE_OFFSET,
- 2,
- Interrupt
- );
- }
-
- if (!EFI_ERROR (Status)) {
- Status = PciIo->GetLocation (
- PciIo,
- &Segment,
- &Bus,
- &Device,
- &Function
- );
- }
-
- if (!EFI_ERROR (Status)) {
- DEBUG ((
- DEBUG_INFO,
- " %02x/%02x/%02x 0x%02x 0x%02x\n",
- Bus,
- Device,
- Function,
- Interrupt[0],
- Interrupt[1]
- ));
- }
- }
-
- DEBUG ((DEBUG_INFO, "\n"));
-
- if (Handles != NULL) {
- FreePool (Handles);
- }
-}
-
-/**
- Identify drive data must be updated to actual parameters before boot.
-
- @param IdentifyDriveData ATA Identify Data
-
-**/
-VOID
-UpdateIdentifyDriveData (
- IN UINT8 *IdentifyDriveData
- );
-
-/**
- Update SIO data.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS Removable media not present
-
-**/
-EFI_STATUS
-UpdateSioData (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- UINTN Index;
- UINTN Index1;
- UINT8 LegacyInterrupts[16];
- EFI_LEGACY_IRQ_ROUTING_ENTRY *RoutingTable;
- UINTN RoutingTableEntries;
- EFI_LEGACY_IRQ_PRIORITY_TABLE_ENTRY *IrqPriorityTable;
- UINTN NumberPriorityEntries;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;
- UINT8 HddIrq;
- UINT16 LegacyInt;
- UINT16 LegMask;
- UINT32 Register;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- EFI_ISA_IO_PROTOCOL *IsaIo;
-
- LegacyInt = 0;
- HandleBuffer = NULL;
-
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;
- LegacyBiosBuildSioData (Private);
- SetMem (LegacyInterrupts, sizeof (LegacyInterrupts), 0);
-
- //
- // Create list of legacy interrupts.
- //
- for (Index = 0; Index < 4; Index++) {
- LegacyInterrupts[Index] = EfiToLegacy16BootTable->SioData.Serial[Index].Irq;
- }
-
- for (Index = 4; Index < 7; Index++) {
- LegacyInterrupts[Index] = EfiToLegacy16BootTable->SioData.Parallel[Index - 4].Irq;
- }
-
- LegacyInterrupts[7] = EfiToLegacy16BootTable->SioData.Floppy.Irq;
-
- //
- // Get Legacy Hdd IRQs. If native mode treat as PCI
- //
- for (Index = 0; Index < 2; Index++) {
- HddIrq = EfiToLegacy16BootTable->HddInfo[Index].HddIrq;
- if ((HddIrq != 0) && ((HddIrq == 15) || (HddIrq == 14))) {
- LegacyInterrupts[Index + 8] = HddIrq;
- }
- }
-
- Private->LegacyBiosPlatform->GetRoutingTable (
- Private->LegacyBiosPlatform,
- (VOID *)&RoutingTable,
- &RoutingTableEntries,
- NULL,
- NULL,
- (VOID **)&IrqPriorityTable,
- &NumberPriorityEntries
- );
- //
- // Remove legacy interrupts from the list of PCI interrupts available.
- //
- for (Index = 0; Index <= 0x0b; Index++) {
- for (Index1 = 0; Index1 <= NumberPriorityEntries; Index1++) {
- if (LegacyInterrupts[Index] != 0) {
- LegacyInt = (UINT16)(LegacyInt | (1 << LegacyInterrupts[Index]));
- if (LegacyInterrupts[Index] == IrqPriorityTable[Index1].Irq) {
- IrqPriorityTable[Index1].Used = LEGACY_USED;
- }
- }
- }
- }
-
- Private->Legacy8259->GetMask (
- Private->Legacy8259,
- &LegMask,
- NULL,
- NULL,
- NULL
- );
-
- //
- // Set SIO interrupts and disable mouse. Let mouse driver
- // re-enable it.
- //
- LegMask = (UINT16)((LegMask &~LegacyInt) | 0x1000);
- Private->Legacy8259->SetMask (
- Private->Legacy8259,
- &LegMask,
- NULL,
- NULL,
- NULL
- );
-
- //
- // Disable mouse in keyboard controller
- //
- Register = 0xA7;
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiIsaIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiIsaIoProtocolGuid,
- (VOID **)&IsaIo
- );
- ASSERT_EFI_ERROR (Status);
- IsaIo->Io.Write (IsaIo, EfiIsaIoWidthUint8, 0x64, 1, &Register);
- }
-
- if (HandleBuffer != NULL) {
- FreePool (HandleBuffer);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Identify drive data must be updated to actual parameters before boot.
- This requires updating the checksum, if it exists.
-
- @param IdentifyDriveData ATA Identify Data
- @param Checksum checksum of the ATA Identify Data
-
- @retval EFI_SUCCESS checksum calculated
- @retval EFI_SECURITY_VIOLATION IdentifyData invalid
-
-**/
-EFI_STATUS
-CalculateIdentifyDriveChecksum (
- IN UINT8 *IdentifyDriveData,
- OUT UINT8 *Checksum
- )
-{
- UINTN Index;
- UINT8 LocalChecksum;
-
- LocalChecksum = 0;
- *Checksum = 0;
- if (IdentifyDriveData[510] != 0xA5) {
- return EFI_SECURITY_VIOLATION;
- }
-
- for (Index = 0; Index < 512; Index++) {
- LocalChecksum = (UINT8)(LocalChecksum + IdentifyDriveData[Index]);
- }
-
- *Checksum = LocalChecksum;
- return EFI_SUCCESS;
-}
-
-/**
- Identify drive data must be updated to actual parameters before boot.
-
- @param IdentifyDriveData ATA Identify Data
-
-
-**/
-VOID
-UpdateIdentifyDriveData (
- IN UINT8 *IdentifyDriveData
- )
-{
- UINT16 NumberCylinders;
- UINT16 NumberHeads;
- UINT16 NumberSectorsTrack;
- UINT32 CapacityInSectors;
- UINT8 OriginalChecksum;
- UINT8 FinalChecksum;
- EFI_STATUS Status;
- ATAPI_IDENTIFY *ReadInfo;
-
- //
- // Status indicates if Integrity byte is correct. Checksum should be
- // 0 if valid.
- //
- ReadInfo = (ATAPI_IDENTIFY *)IdentifyDriveData;
- Status = CalculateIdentifyDriveChecksum (IdentifyDriveData, &OriginalChecksum);
- if (OriginalChecksum != 0) {
- Status = EFI_SECURITY_VIOLATION;
- }
-
- //
- // If NumberCylinders = 0 then do data(Controller present but don drive attached).
- //
- NumberCylinders = ReadInfo->Raw[1];
- if (NumberCylinders != 0) {
- ReadInfo->Raw[54] = NumberCylinders;
-
- NumberHeads = ReadInfo->Raw[3];
- ReadInfo->Raw[55] = NumberHeads;
-
- NumberSectorsTrack = ReadInfo->Raw[6];
- ReadInfo->Raw[56] = NumberSectorsTrack;
-
- //
- // Copy Multisector info and set valid bit.
- //
- ReadInfo->Raw[59] = (UINT16)(ReadInfo->Raw[47] + 0x100);
- CapacityInSectors = (UINT32)((UINT32)(NumberCylinders) * (UINT32)(NumberHeads) * (UINT32)(NumberSectorsTrack));
- ReadInfo->Raw[57] = (UINT16)(CapacityInSectors >> 16);
- ReadInfo->Raw[58] = (UINT16)(CapacityInSectors & 0xffff);
- if (Status == EFI_SUCCESS) {
- //
- // Forece checksum byte to 0 and get new checksum.
- //
- ReadInfo->Raw[255] &= 0xff;
- CalculateIdentifyDriveChecksum (IdentifyDriveData, &FinalChecksum);
-
- //
- // Force new checksum such that sum is 0.
- //
- FinalChecksum = (UINT8)((UINT8)0 - FinalChecksum);
- ReadInfo->Raw[255] = (UINT16)(ReadInfo->Raw[255] | (FinalChecksum << 8));
- }
- }
-}
-
-/**
- Identify drive data must be updated to actual parameters before boot.
- Do for all drives.
-
- @param Private Legacy BIOS Instance data
-
-
-**/
-VOID
-UpdateAllIdentifyDriveData (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- UINTN Index;
- HDD_INFO *HddInfo;
-
- HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];
-
- for (Index = 0; Index < MAX_IDE_CONTROLLER; Index++) {
- //
- // Each controller can have 2 devices. Update for each device
- //
- if ((HddInfo[Index].Status & HDD_MASTER_IDE) != 0) {
- UpdateIdentifyDriveData ((UINT8 *)(&HddInfo[Index].IdentifyDrive[0].Raw[0]));
- }
-
- if ((HddInfo[Index].Status & HDD_SLAVE_IDE) != 0) {
- UpdateIdentifyDriveData ((UINT8 *)(&HddInfo[Index].IdentifyDrive[1].Raw[0]));
- }
- }
-}
-
-/**
- Enable ide controller. This gets disabled when LegacyBoot.c is about
- to run the Option ROMs.
-
- @param Private Legacy BIOS Instance data
-
-
-**/
-VOID
-EnableIdeController (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_PCI_IO_PROTOCOL *PciIo;
- EFI_STATUS Status;
- EFI_HANDLE IdeController;
- UINT8 ByteBuffer;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
-
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformIdeHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
- if (!EFI_ERROR (Status)) {
- IdeController = HandleBuffer[0];
- Status = gBS->HandleProtocol (
- IdeController,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- ByteBuffer = 0x1f;
- if (!EFI_ERROR (Status)) {
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, 0x04, 1, &ByteBuffer);
- }
- }
-}
-
-/**
- Enable ide controller. This gets disabled when LegacyBoot.c is about
- to run the Option ROMs.
-
- @param Private Legacy BIOS Instance data
-
-
-**/
-VOID
-EnableAllControllers (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE01 PciConfigHeader;
- EFI_STATUS Status;
-
- //
- //
- //
- EnableIdeController (Private);
-
- //
- // Assumption is table is built from low bus to high bus numbers.
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- ASSERT_EFI_ERROR (Status);
-
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- ASSERT_EFI_ERROR (Status);
-
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
-
- //
- // We do not enable PPB here. This is for HotPlug Consideration.
- // The Platform HotPlug Driver is responsible for Padding enough hot plug
- // resources. It is also responsible for enable this bridge. If it
- // does not pad it. It will cause some early Windows fail to installation.
- // If the platform driver does not pad resource for PPB, PPB should be in
- // un-enabled state to let Windows know that this PPB is not configured by
- // BIOS. So Windows will allocate default resource for PPB.
- //
- // The reason for why we enable the command register is:
- // The CSM will use the IO bar to detect some IRQ status, if the command
- // is disabled, the IO resource will be out of scope.
- // For example:
- // We installed a legacy IRQ handle for a PCI IDE controller. When IRQ
- // comes up, the handle will check the IO space to identify is the
- // controller generated the IRQ source.
- // If the IO command is not enabled, the IRQ handler will has wrong
- // information. It will cause IRQ storm when the correctly IRQ handler fails
- // to run.
- //
- if (!(IS_PCI_VGA (&PciConfigHeader) ||
- IS_PCI_OLD_VGA (&PciConfigHeader) ||
- IS_PCI_IDE (&PciConfigHeader) ||
- IS_PCI_P2P (&PciConfigHeader) ||
- IS_PCI_P2P_SUB (&PciConfigHeader) ||
- IS_PCI_LPC (&PciConfigHeader)))
- {
- PciConfigHeader.Hdr.Command |= 0x1f;
-
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 4, 1, &PciConfigHeader.Hdr.Command);
- }
- }
-}
-
-/**
- The following routines are identical in operation, so combine
- for code compaction:
- EfiGetPlatformBinaryGetMpTable
- EfiGetPlatformBinaryGetOemIntData
- EfiGetPlatformBinaryGetOem32Data
- EfiGetPlatformBinaryGetOem16Data
-
- @param This Protocol instance pointer.
- @param Id Table/Data identifier
-
- @retval EFI_SUCCESS Success
- @retval EFI_INVALID_PARAMETER Invalid ID
- @retval EFI_OUT_OF_RESOURCES no resource to get data or table
-
-**/
-EFI_STATUS
-LegacyGetDataOrTable (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_GET_PLATFORM_INFO_MODE Id
- )
-{
- VOID *Table;
- UINT32 TablePtr;
- UINTN TableSize;
- UINTN Alignment;
- UINTN Location;
- EFI_STATUS Status;
- EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;
- EFI_COMPATIBILITY16_TABLE *Legacy16Table;
- EFI_IA32_REGISTER_SET Regs;
- LEGACY_BIOS_INSTANCE *Private;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
-
- LegacyBiosPlatform = Private->LegacyBiosPlatform;
- Legacy16Table = Private->Legacy16Table;
-
- //
- // Phase 1 - get an address allocated in 16-bit code
- //
- while (TRUE) {
- switch (Id) {
- case EfiGetPlatformBinaryMpTable:
- case EfiGetPlatformBinaryOemIntData:
- case EfiGetPlatformBinaryOem32Data:
- case EfiGetPlatformBinaryOem16Data:
- {
- Status = LegacyBiosPlatform->GetPlatformInfo (
- LegacyBiosPlatform,
- Id,
- (VOID *)&Table,
- &TableSize,
- &Location,
- &Alignment,
- 0,
- 0
- );
- DEBUG ((DEBUG_INFO, "LegacyGetDataOrTable - ID: %x, %r\n", (UINTN)Id, Status));
- DEBUG ((DEBUG_INFO, " Table - %x, Size - %x, Location - %x, Alignment - %x\n", (UINTN)Table, (UINTN)TableSize, (UINTN)Location, (UINTN)Alignment));
- break;
- }
-
- default:
- {
- return EFI_INVALID_PARAMETER;
- }
- }
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16GetTableAddress;
- Regs.X.CX = (UINT16)TableSize;
- Regs.X.BX = (UINT16)Location;
- Regs.X.DX = (UINT16)Alignment;
- Private->LegacyBios.FarCall86 (
- This,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- if (Regs.X.AX != 0) {
- DEBUG ((DEBUG_ERROR, "Table ID %x length insufficient\n", Id));
- return EFI_OUT_OF_RESOURCES;
- } else {
- break;
- }
- }
-
- //
- // Phase 2 Call routine second time with address to allow address adjustment
- //
- Status = LegacyBiosPlatform->GetPlatformInfo (
- LegacyBiosPlatform,
- Id,
- (VOID *)&Table,
- &TableSize,
- &Location,
- &Alignment,
- Regs.X.DS,
- Regs.X.BX
- );
- switch (Id) {
- case EfiGetPlatformBinaryMpTable:
- {
- Legacy16Table->MpTablePtr = (UINT32)(Regs.X.DS * 16 + Regs.X.BX);
- Legacy16Table->MpTableLength = (UINT32)TableSize;
- DEBUG ((DEBUG_INFO, "MP table in legacy region - %x\n", (UINTN)Legacy16Table->MpTablePtr));
- break;
- }
-
- case EfiGetPlatformBinaryOemIntData:
- {
- Legacy16Table->OemIntSegment = Regs.X.DS;
- Legacy16Table->OemIntOffset = Regs.X.BX;
- DEBUG ((DEBUG_INFO, "OemInt table in legacy region - %04x:%04x\n", (UINTN)Legacy16Table->OemIntSegment, (UINTN)Legacy16Table->OemIntOffset));
- break;
- }
-
- case EfiGetPlatformBinaryOem32Data:
- {
- Legacy16Table->Oem32Segment = Regs.X.DS;
- Legacy16Table->Oem32Offset = Regs.X.BX;
- DEBUG ((DEBUG_INFO, "Oem32 table in legacy region - %04x:%04x\n", (UINTN)Legacy16Table->Oem32Segment, (UINTN)Legacy16Table->Oem32Offset));
- break;
- }
-
- case EfiGetPlatformBinaryOem16Data:
- {
- //
- // Legacy16Table->Oem16Segment = Regs.X.DS;
- // Legacy16Table->Oem16Offset = Regs.X.BX;
- DEBUG ((DEBUG_INFO, "Oem16 table in legacy region - %04x:%04x\n", (UINTN)Legacy16Table->Oem16Segment, (UINTN)Legacy16Table->Oem16Offset));
- break;
- }
-
- default:
- {
- return EFI_INVALID_PARAMETER;
- }
- }
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Phase 3 Copy table to final location
- //
- TablePtr = (UINT32)(Regs.X.DS * 16 + Regs.X.BX);
-
- CopyMem (
- (VOID *)(UINTN)TablePtr,
- Table,
- TableSize
- );
-
- return EFI_SUCCESS;
-}
-
-/**
- Copy SMBIOS table to EfiReservedMemoryType of memory for legacy boot.
-
-**/
-VOID
-CreateSmbiosTableInReservedMemory (
- VOID
- )
-{
- SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;
-
- if ((mRuntimeSmbiosEntryPoint == NULL) ||
- (mReserveSmbiosEntryPoint == 0) ||
- (mStructureTableAddress == 0))
- {
- return;
- }
-
- EntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *)mRuntimeSmbiosEntryPoint;
-
- //
- // Copy SMBIOS Entry Point Structure
- //
- CopyMem (
- (VOID *)(UINTN)mReserveSmbiosEntryPoint,
- EntryPointStructure,
- EntryPointStructure->EntryPointLength
- );
-
- //
- // Copy SMBIOS Structure Table into EfiReservedMemoryType memory
- //
- CopyMem (
- (VOID *)(UINTN)mStructureTableAddress,
- (VOID *)(UINTN)EntryPointStructure->TableAddress,
- EntryPointStructure->TableLength
- );
-
- //
- // Update TableAddress in Entry Point Structure
- //
- EntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *)(UINTN)mReserveSmbiosEntryPoint;
- EntryPointStructure->TableAddress = (UINT32)(UINTN)mStructureTableAddress;
-
- //
- // Fixup checksums in the Entry Point Structure
- //
- EntryPointStructure->IntermediateChecksum = 0;
- EntryPointStructure->EntryPointStructureChecksum = 0;
-
- EntryPointStructure->IntermediateChecksum =
- CalculateCheckSum8 (
- (UINT8 *)EntryPointStructure + OFFSET_OF (SMBIOS_TABLE_ENTRY_POINT, IntermediateAnchorString),
- EntryPointStructure->EntryPointLength - OFFSET_OF (SMBIOS_TABLE_ENTRY_POINT, IntermediateAnchorString)
- );
- EntryPointStructure->EntryPointStructureChecksum =
- CalculateCheckSum8 ((UINT8 *)EntryPointStructure, EntryPointStructure->EntryPointLength);
-}
-
-/**
- Assign drive number to legacy HDD drives prior to booting an EFI
- aware OS so the OS can access drives without an EFI driver.
- Note: BBS compliant drives ARE NOT available until this call by
- either shell or EFI.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS Drive numbers assigned
-
-**/
-EFI_STATUS
-GenericLegacyBoot (
- IN EFI_LEGACY_BIOS_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- LEGACY_BIOS_INSTANCE *Private;
- EFI_IA32_REGISTER_SET Regs;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;
- EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;
- UINTN CopySize;
- VOID *AcpiPtr;
- HDD_INFO *HddInfo;
- HDD_INFO *LocalHddInfo;
- UINTN Index;
- EFI_COMPATIBILITY16_TABLE *Legacy16Table;
- UINT32 *BdaPtr;
- UINT16 HddCount;
- UINT16 BbsCount;
- BBS_TABLE *LocalBbsTable;
- UINT32 *BaseVectorMaster;
- EFI_TIME BootTime;
- UINT32 LocalTime;
- EFI_HANDLE IdeController;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- VOID *AcpiTable;
- UINTN ShadowAddress;
- UINT32 Granularity;
-
- LocalHddInfo = NULL;
- HddCount = 0;
- BbsCount = 0;
- LocalBbsTable = NULL;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- DEBUG_CODE (
- DEBUG ((DEBUG_ERROR, "Start of legacy boot\n"));
- );
-
- Legacy16Table = Private->Legacy16Table;
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;
- HddInfo = &EfiToLegacy16BootTable->HddInfo[0];
-
- LegacyBiosPlatform = Private->LegacyBiosPlatform;
-
- EfiToLegacy16BootTable->MajorVersion = EFI_TO_LEGACY_MAJOR_VERSION;
- EfiToLegacy16BootTable->MinorVersion = EFI_TO_LEGACY_MINOR_VERSION;
-
- //
- // If booting to a legacy OS then force HDD drives to the appropriate
- // boot mode by calling GetIdeHandle.
- // A reconnect -r can force all HDDs back to native mode.
- //
- IdeController = NULL;
- if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {
- Status = LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformIdeHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
- if (!EFI_ERROR (Status)) {
- IdeController = HandleBuffer[0];
- }
- }
-
- //
- // Unlock the Legacy BIOS region
- //
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
-
- //
- // Reconstruct the Legacy16 boot memory map
- //
- LegacyBiosBuildE820 (Private, &CopySize);
- if (CopySize > Private->Legacy16Table->E820Length) {
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16GetTableAddress;
- Regs.X.BX = (UINT16)0x0; // Any region
- Regs.X.CX = (UINT16)CopySize;
- Regs.X.DX = (UINT16)0x4; // Alignment
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Private->Legacy16Table->Compatibility16CallSegment,
- Private->Legacy16Table->Compatibility16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- Private->Legacy16Table->E820Pointer = (UINT32)(Regs.X.DS * 16 + Regs.X.BX);
- Private->Legacy16Table->E820Length = (UINT32)CopySize;
- if (Regs.X.AX != 0) {
- DEBUG ((DEBUG_ERROR, "Legacy16 E820 length insufficient\n"));
- return EFI_OUT_OF_RESOURCES;
- } else {
- CopyMem (
- (VOID *)(UINTN)Private->Legacy16Table->E820Pointer,
- Private->E820Table,
- CopySize
- );
- }
- } else {
- CopyMem (
- (VOID *)(UINTN)Private->Legacy16Table->E820Pointer,
- Private->E820Table,
- CopySize
- );
- Private->Legacy16Table->E820Length = (UINT32)CopySize;
- }
-
- //
- // We do not ASSERT if SmbiosTable not found. It is possible that a platform does not produce SmbiosTable.
- //
- if (mReserveSmbiosEntryPoint == 0) {
- DEBUG ((DEBUG_INFO, "Smbios table is not found!\n"));
- }
-
- CreateSmbiosTableInReservedMemory ();
- EfiToLegacy16BootTable->SmbiosTable = (UINT32)(UINTN)mReserveSmbiosEntryPoint;
-
- AcpiTable = NULL;
- Status = EfiGetSystemConfigurationTable (
- &gEfiAcpi20TableGuid,
- &AcpiTable
- );
- if (EFI_ERROR (Status)) {
- Status = EfiGetSystemConfigurationTable (
- &gEfiAcpi10TableGuid,
- &AcpiTable
- );
- }
-
- //
- // We do not ASSERT if AcpiTable not found. It is possible that a platform does not produce AcpiTable.
- //
- if (AcpiTable == NULL) {
- DEBUG ((DEBUG_INFO, "ACPI table is not found!\n"));
- }
-
- EfiToLegacy16BootTable->AcpiTable = (UINT32)(UINTN)AcpiTable;
-
- //
- // Get RSD Ptr table rev at offset 15 decimal
- // Rev = 0 Length is 20 decimal
- // Rev != 0 Length is UINT32 at offset 20 decimal
- //
- if (AcpiTable != NULL) {
- AcpiPtr = AcpiTable;
- if (*((UINT8 *)AcpiPtr + 15) == 0) {
- CopySize = 20;
- } else {
- AcpiPtr = ((UINT8 *)AcpiPtr + 20);
- CopySize = (*(UINT32 *)AcpiPtr);
- }
-
- CopyMem (
- (VOID *)(UINTN)Private->Legacy16Table->AcpiRsdPtrPointer,
- AcpiTable,
- CopySize
- );
- }
-
- //
- // Make sure all PCI Interrupt Line register are programmed to match 8259
- //
- PciProgramAllInterruptLineRegisters (Private);
-
- //
- // Unlock the Legacy BIOS region as PciProgramAllInterruptLineRegisters
- // can lock it.
- //
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- Private->BiosStart,
- Private->LegacyBiosImageSize,
- &Granularity
- );
-
- //
- // Configure Legacy Device Magic
- //
- // Only do this code if booting legacy OS
- //
- if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {
- UpdateSioData (Private);
- }
-
- //
- // Setup BDA and EBDA standard areas before Legacy Boot
- //
- ACCESS_PAGE0_CODE (
- LegacyBiosCompleteBdaBeforeBoot (Private);
- );
- LegacyBiosCompleteStandardCmosBeforeBoot (Private);
-
- //
- // We must build IDE data, if it hasn't been done, before PciShadowRoms
- // to insure EFI drivers are connected.
- //
- LegacyBiosBuildIdeData (Private, &HddInfo, 1);
- UpdateAllIdentifyDriveData (Private);
-
- //
- // Clear IO BAR, if IDE controller in legacy mode.
- //
- InitLegacyIdeController (IdeController);
-
- //
- // Generate number of ticks since midnight for BDA. DOS requires this
- // for its time. We have to make assumptions as to how long following
- // code takes since after PciShadowRoms PciIo is gone. Place result in
- // 40:6C-6F
- //
- // Adjust value by 1 second.
- //
- gRT->GetTime (&BootTime, NULL);
- LocalTime = BootTime.Hour * 3600 + BootTime.Minute * 60 + BootTime.Second;
- LocalTime += 1;
-
- //
- // Multiply result by 18.2 for number of ticks since midnight.
- // Use 182/10 to avoid floating point math.
- //
- LocalTime = (LocalTime * 182) / 10;
- ACCESS_PAGE0_CODE (
- BdaPtr = (UINT32 *)(UINTN)0x46C;
- *BdaPtr = LocalTime;
- );
-
- //
- // Shadow PCI ROMs. We must do this near the end since this will kick
- // of Native EFI drivers that may be needed to collect info for Legacy16
- //
- // WARNING: PciIo is gone after this call.
- //
- PciShadowRoms (Private);
-
- //
- // Shadow PXE base code, BIS etc.
- //
- Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xc0000, 0x40000, &Granularity);
- ShadowAddress = Private->OptionRom;
- Private->LegacyBiosPlatform->PlatformHooks (
- Private->LegacyBiosPlatform,
- EfiPlatformHookShadowServiceRoms,
- 0,
- 0,
- &ShadowAddress,
- Legacy16Table,
- NULL
- );
- Private->OptionRom = (UINT32)ShadowAddress;
- //
- // Register Legacy SMI Handler
- //
- LegacyBiosPlatform->SmmInit (
- LegacyBiosPlatform,
- EfiToLegacy16BootTable
- );
-
- //
- // Let platform code know the boot options
- //
- LegacyBiosGetBbsInfo (
- This,
- &HddCount,
- &LocalHddInfo,
- &BbsCount,
- &LocalBbsTable
- );
-
- DEBUG_CODE (
- PrintPciInterruptRegister ();
- PrintBbsTable (LocalBbsTable);
- PrintHddInfo (LocalHddInfo);
- );
- //
- // If drive wasn't spun up then BuildIdeData may have found new drives.
- // Need to update BBS boot priority.
- //
- for (Index = 0; Index < MAX_IDE_CONTROLLER; Index++) {
- if ((LocalHddInfo[Index].IdentifyDrive[0].Raw[0] != 0) &&
- (LocalBbsTable[2 * Index + 1].BootPriority == BBS_IGNORE_ENTRY)
- )
- {
- LocalBbsTable[2 * Index + 1].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- }
-
- if ((LocalHddInfo[Index].IdentifyDrive[1].Raw[0] != 0) &&
- (LocalBbsTable[2 * Index + 2].BootPriority == BBS_IGNORE_ENTRY)
- )
- {
- LocalBbsTable[2 * Index + 2].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- }
- }
-
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- 0xc0000,
- 0x40000,
- &Granularity
- );
-
- LegacyBiosPlatform->PrepareToBoot (
- LegacyBiosPlatform,
- mBbsDevicePathPtr,
- mBbsTable,
- mLoadOptionsSize,
- mLoadOptions,
- (VOID *)&Private->IntThunk->EfiToLegacy16BootTable
- );
-
- //
- // If no boot device return to BDS
- //
- if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {
- for (Index = 0; Index < BbsCount; Index++) {
- if ((LocalBbsTable[Index].BootPriority != BBS_DO_NOT_BOOT_FROM) &&
- (LocalBbsTable[Index].BootPriority != BBS_UNPRIORITIZED_ENTRY) &&
- (LocalBbsTable[Index].BootPriority != BBS_IGNORE_ENTRY))
- {
- break;
- }
- }
-
- if (Index == BbsCount) {
- return EFI_DEVICE_ERROR;
- }
- }
-
- //
- // Let the Legacy16 code know the device path type for legacy boot
- //
- EfiToLegacy16BootTable->DevicePathType = mBbsDevicePathPtr->DeviceType;
-
- //
- // Copy MP table, if it exists.
- //
- LegacyGetDataOrTable (This, EfiGetPlatformBinaryMpTable);
-
- if (!Private->LegacyBootEntered) {
- //
- // Copy OEM INT Data, if it exists. Note: This code treats any data
- // as a bag of bits and knows nothing of the contents nor cares.
- // Contents are IBV specific.
- //
- LegacyGetDataOrTable (This, EfiGetPlatformBinaryOemIntData);
-
- //
- // Copy OEM16 Data, if it exists.Note: This code treats any data
- // as a bag of bits and knows nothing of the contents nor cares.
- // Contents are IBV specific.
- //
- LegacyGetDataOrTable (This, EfiGetPlatformBinaryOem16Data);
-
- //
- // Copy OEM32 Data, if it exists.Note: This code treats any data
- // as a bag of bits and knows nothing of the contents nor cares.
- // Contents are IBV specific.
- //
- LegacyGetDataOrTable (This, EfiGetPlatformBinaryOem32Data);
- }
-
- //
- // Call into Legacy16 code to prepare for INT 19h
- //
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16PrepareToBoot;
-
- //
- // Pass in handoff data
- //
- Regs.X.ES = NORMALIZE_EFI_SEGMENT ((UINTN)EfiToLegacy16BootTable);
- Regs.X.BX = NORMALIZE_EFI_OFFSET ((UINTN)EfiToLegacy16BootTable);
-
- Private->LegacyBios.FarCall86 (
- This,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- if (Regs.X.AX != 0) {
- return EFI_DEVICE_ERROR;
- }
-
- //
- // Lock the Legacy BIOS region
- //
- Private->LegacyRegion->Lock (
- Private->LegacyRegion,
- 0xc0000,
- 0x40000,
- &Granularity
- );
-
- if ((Private->Legacy16Table->TableLength >= OFFSET_OF (EFI_COMPATIBILITY16_TABLE, HiPermanentMemoryAddress)) &&
- ((Private->Legacy16Table->UmaAddress != 0) && (Private->Legacy16Table->UmaSize != 0)))
- {
- //
- // Here we could reduce UmaAddress down as far as Private->OptionRom, taking into
- // account the granularity of the access control.
- //
- DEBUG ((
- DEBUG_INFO,
- "Unlocking UMB RAM region 0x%x-0x%x\n",
- Private->Legacy16Table->UmaAddress,
- Private->Legacy16Table->UmaAddress + Private->Legacy16Table->UmaSize
- ));
-
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- Private->Legacy16Table->UmaAddress,
- Private->Legacy16Table->UmaSize,
- &Granularity
- );
- }
-
- //
- // Lock attributes of the Legacy Region if chipset supports
- //
- Private->LegacyRegion->BootLock (
- Private->LegacyRegion,
- 0xc0000,
- 0x40000,
- &Granularity
- );
-
- //
- // Call into Legacy16 code to do the INT 19h
- //
- EnableAllControllers (Private);
- if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {
- //
- // Signal all the events that are waiting on EVT_SIGNAL_LEGACY_BOOT
- //
- EfiSignalEventLegacyBoot ();
-
- //
- // Report Status Code to indicate legacy boot event was signalled
- //
- REPORT_STATUS_CODE (
- EFI_PROGRESS_CODE,
- (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_LEGACY_BOOT_EVENT)
- );
-
- DEBUG ((DEBUG_INFO, "Legacy INT19 Boot...\n"));
-
- //
- // Disable DXE Timer while executing in real mode
- //
- Private->Timer->SetTimerPeriod (Private->Timer, 0);
-
- //
- // Save and disable interrupt of debug timer
- //
- SaveAndSetDebugTimerInterrupt (FALSE);
-
- //
- // Put the 8259 into its legacy mode by reprogramming the vector bases
- //
- Private->Legacy8259->SetVectorBase (Private->Legacy8259, LEGACY_MODE_BASE_VECTOR_MASTER, LEGACY_MODE_BASE_VECTOR_SLAVE);
- //
- // PC History
- // The original PC used INT8-F for master PIC. Since these mapped over
- // processor exceptions TIANO moved the master PIC to INT68-6F.
- // We need to set these back to the Legacy16 unexpected interrupt(saved
- // in LegacyBios.c) since some OS see that these have values different from
- // what is expected and invoke them. Since the legacy OS corrupts EFI
- // memory, there is no handler for these interrupts and OS blows up.
- //
- // We need to save the TIANO values for the rare case that the Legacy16
- // code cannot boot but knows memory hasn't been destroyed.
- //
- // To compound the problem, video takes over one of these INTS and must be
- // be left.
- // @bug - determine if video hooks INT(in which case we must find new
- // set of TIANO vectors) or takes it over.
- //
- //
- ACCESS_PAGE0_CODE (
- BaseVectorMaster = (UINT32 *)(sizeof (UINT32) * PROTECTED_MODE_BASE_VECTOR_MASTER);
- for (Index = 0; Index < 8; Index++) {
- Private->ThunkSavedInt[Index] = BaseVectorMaster[Index];
- if (Private->ThunkSeg == (UINT16)(BaseVectorMaster[Index] >> 16)) {
- BaseVectorMaster[Index] = (UINT32)(Private->BiosUnexpectedInt);
- }
- }
-
- );
-
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16Boot;
-
- Private->LegacyBios.FarCall86 (
- This,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- ACCESS_PAGE0_CODE (
- BaseVectorMaster = (UINT32 *)(sizeof (UINT32) * PROTECTED_MODE_BASE_VECTOR_MASTER);
- for (Index = 0; Index < 8; Index++) {
- BaseVectorMaster[Index] = Private->ThunkSavedInt[Index];
- }
-
- );
- }
-
- Private->LegacyBootEntered = TRUE;
- if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {
- //
- // Should never return unless never passed control to 0:7c00(first stage
- // OS loader) and only then if no bootable device found.
- //
- return EFI_DEVICE_ERROR;
- } else {
- //
- // If boot to EFI then expect to return to caller
- //
- return EFI_SUCCESS;
- }
-}
-
-/**
- Assign drive number to legacy HDD drives prior to booting an EFI
- aware OS so the OS can access drives without an EFI driver.
- Note: BBS compliant drives ARE NOT available until this call by
- either shell or EFI.
-
- @param This Protocol instance pointer.
- @param BbsCount Number of BBS_TABLE structures
- @param BbsTable List BBS entries
-
- @retval EFI_SUCCESS Drive numbers assigned
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosPrepareToBootEfi (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- OUT UINT16 *BbsCount,
- OUT BBS_TABLE **BbsTable
- )
-{
- EFI_STATUS Status;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;
- LEGACY_BIOS_INSTANCE *Private;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;
- mBootMode = BOOT_EFI_OS;
- mBbsDevicePathPtr = NULL;
- Status = GenericLegacyBoot (This);
- *BbsTable = (BBS_TABLE *)(UINTN)EfiToLegacy16BootTable->BbsTable;
- *BbsCount = (UINT16)(sizeof (Private->IntThunk->BbsTable) / sizeof (BBS_TABLE));
- return Status;
-}
-
-/**
- To boot from an unconventional device like parties and/or execute HDD diagnostics.
-
- @param This Protocol instance pointer.
- @param Attributes How to interpret the other input parameters
- @param BbsEntry The 0-based index into the BbsTable for the parent
- device.
- @param BeerData Pointer to the 128 bytes of ram BEER data.
- @param ServiceAreaData Pointer to the 64 bytes of raw Service Area data. The
- caller must provide a pointer to the specific Service
- Area and not the start all Service Areas.
-
- @retval EFI_INVALID_PARAMETER if error. Does NOT return if no error.
-
-***/
-EFI_STATUS
-EFIAPI
-LegacyBiosBootUnconventionalDevice (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UDC_ATTRIBUTES Attributes,
- IN UINTN BbsEntry,
- IN VOID *BeerData,
- IN VOID *ServiceAreaData
- )
-{
- EFI_STATUS Status;
- EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;
- LEGACY_BIOS_INSTANCE *Private;
- UD_TABLE *UcdTable;
- UINTN Index;
- UINT16 BootPriority;
- BBS_TABLE *BbsTable;
-
- BootPriority = 0;
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- mBootMode = BOOT_UNCONVENTIONAL_DEVICE;
- mBbsDevicePathPtr = &mBbsDevicePathNode;
- mAttributes = Attributes;
- mBbsEntry = BbsEntry;
- mBeerData = BeerData, mServiceAreaData = ServiceAreaData;
-
- EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;
-
- //
- // Do input parameter checking
- //
- if ((Attributes.DirectoryServiceValidity == 0) &&
- (Attributes.RabcaUsedFlag == 0) &&
- (Attributes.ExecuteHddDiagnosticsFlag == 0)
- )
- {
- return EFI_INVALID_PARAMETER;
- }
-
- if (((Attributes.DirectoryServiceValidity != 0) && (ServiceAreaData == NULL)) ||
- (((Attributes.DirectoryServiceValidity | Attributes.RabcaUsedFlag) != 0) && (BeerData == NULL))
- )
- {
- return EFI_INVALID_PARAMETER;
- }
-
- UcdTable = (UD_TABLE *)AllocatePool (
- sizeof (UD_TABLE)
- );
- if (NULL == UcdTable) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- EfiToLegacy16BootTable->UnconventionalDeviceTable = (UINT32)(UINTN)UcdTable;
- UcdTable->Attributes = Attributes;
- UcdTable->BbsTableEntryNumberForParentDevice = (UINT8)BbsEntry;
- //
- // Force all existing BBS entries to DoNotBoot. This allows 16-bit CSM
- // to assign drive numbers but bot boot from. Only newly created entries
- // will be valid.
- //
- BbsTable = (BBS_TABLE *)(UINTN)EfiToLegacy16BootTable->BbsTable;
- for (Index = 0; Index < EfiToLegacy16BootTable->NumberBbsEntries; Index++) {
- BbsTable[Index].BootPriority = BBS_DO_NOT_BOOT_FROM;
- }
-
- //
- // If parent is onboard IDE then assign controller & device number
- // else they are 0.
- //
- if (BbsEntry < MAX_IDE_CONTROLLER * 2) {
- UcdTable->DeviceNumber = (UINT8)((BbsEntry - 1) % 2);
- }
-
- if (BeerData != NULL) {
- CopyMem (
- (VOID *)UcdTable->BeerData,
- BeerData,
- (UINTN)128
- );
- }
-
- if (ServiceAreaData != NULL) {
- CopyMem (
- (VOID *)UcdTable->ServiceAreaData,
- ServiceAreaData,
- (UINTN)64
- );
- }
-
- //
- // For each new entry do the following:
- // 1. Increment current number of BBS entries
- // 2. Copy parent entry to new entry.
- // 3. Zero out BootHandler Offset & segment
- // 4. Set appropriate device type. BEV(0x80) for HDD diagnostics
- // and Floppy(0x01) for PARTIES boot.
- // 5. Assign new priority.
- //
- if ((Attributes.ExecuteHddDiagnosticsFlag) != 0) {
- EfiToLegacy16BootTable->NumberBbsEntries += 1;
-
- CopyMem (
- (VOID *)&BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority,
- (VOID *)&BbsTable[BbsEntry].BootPriority,
- sizeof (BBS_TABLE)
- );
-
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerOffset = 0;
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerSegment = 0;
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].DeviceType = 0x80;
-
- UcdTable->BbsTableEntryNumberForHddDiag = (UINT8)(EfiToLegacy16BootTable->NumberBbsEntries - 1);
-
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority = BootPriority;
- BootPriority += 1;
-
- //
- // Set device type as BBS_TYPE_DEV for PARTIES diagnostic
- //
- mBbsDevicePathNode.DeviceType = BBS_TYPE_BEV;
- }
-
- if (((Attributes.DirectoryServiceValidity | Attributes.RabcaUsedFlag)) != 0) {
- EfiToLegacy16BootTable->NumberBbsEntries += 1;
- CopyMem (
- (VOID *)&BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority,
- (VOID *)&BbsTable[BbsEntry].BootPriority,
- sizeof (BBS_TABLE)
- );
-
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerOffset = 0;
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerSegment = 0;
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].DeviceType = 0x01;
- UcdTable->BbsTableEntryNumberForBoot = (UINT8)(EfiToLegacy16BootTable->NumberBbsEntries - 1);
- BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority = BootPriority;
-
- //
- // Set device type as BBS_TYPE_FLOPPY for PARTIES boot as floppy
- //
- mBbsDevicePathNode.DeviceType = BBS_TYPE_FLOPPY;
- }
-
- //
- // Build the BBS Device Path for this boot selection
- //
- mBbsDevicePathNode.Header.Type = BBS_DEVICE_PATH;
- mBbsDevicePathNode.Header.SubType = BBS_BBS_DP;
- SetDevicePathNodeLength (&mBbsDevicePathNode.Header, sizeof (BBS_BBS_DEVICE_PATH));
- mBbsDevicePathNode.StatusFlag = 0;
- mBbsDevicePathNode.String[0] = 0;
-
- Status = GenericLegacyBoot (This);
- return Status;
-}
-
-/**
- Attempt to legacy boot the BootOption. If the EFI contexted has been
- compromised this function will not return.
-
- @param This Protocol instance pointer.
- @param BbsDevicePath EFI Device Path from BootXXXX variable.
- @param LoadOptionsSize Size of LoadOption in size.
- @param LoadOptions LoadOption from BootXXXX variable
-
- @retval EFI_SUCCESS Removable media not present
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosLegacyBoot (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN BBS_BBS_DEVICE_PATH *BbsDevicePath,
- IN UINT32 LoadOptionsSize,
- IN VOID *LoadOptions
- )
-{
- EFI_STATUS Status;
-
- mBbsDevicePathPtr = BbsDevicePath;
- mLoadOptionsSize = LoadOptionsSize;
- mLoadOptions = LoadOptions;
- mBootMode = BOOT_LEGACY_OS;
- Status = GenericLegacyBoot (This);
-
- return Status;
-}
-
-/**
- Convert EFI Memory Type to E820 Memory Type.
-
- @param Type EFI Memory Type
-
- @return ACPI Memory Type for EFI Memory Type
-
-**/
-EFI_ACPI_MEMORY_TYPE
-EfiMemoryTypeToE820Type (
- IN UINT32 Type
- )
-{
- switch (Type) {
- case EfiLoaderCode:
- case EfiLoaderData:
- case EfiBootServicesCode:
- case EfiBootServicesData:
- case EfiConventionalMemory:
- //
- // The memory of EfiRuntimeServicesCode and EfiRuntimeServicesData are
- // usable memory for legacy OS, because legacy OS is not aware of EFI runtime concept.
- // In ACPI specification, EfiRuntimeServiceCode and EfiRuntimeServiceData
- // should be mapped to AddressRangeReserved. This statement is for UEFI OS, not for legacy OS.
- //
- case EfiRuntimeServicesCode:
- case EfiRuntimeServicesData:
- return EfiAcpiAddressRangeMemory;
-
- case EfiPersistentMemory:
- return EfiAddressRangePersistentMemory;
-
- case EfiACPIReclaimMemory:
- return EfiAcpiAddressRangeACPI;
-
- case EfiACPIMemoryNVS:
- return EfiAcpiAddressRangeNVS;
-
- //
- // All other types map to reserved.
- // Adding the code just waists FLASH space.
- //
- // case EfiReservedMemoryType:
- // case EfiUnusableMemory:
- // case EfiMemoryMappedIO:
- // case EfiMemoryMappedIOPortSpace:
- // case EfiPalCode:
- //
- default:
- return EfiAcpiAddressRangeReserved;
- }
-}
-
-/**
- Build the E820 table.
-
- @param Private Legacy BIOS Instance data
- @param Size Size of E820 Table
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosBuildE820 (
- IN LEGACY_BIOS_INSTANCE *Private,
- OUT UINTN *Size
- )
-{
- EFI_STATUS Status;
- EFI_E820_ENTRY64 *E820Table;
- EFI_MEMORY_DESCRIPTOR *EfiMemoryMap;
- EFI_MEMORY_DESCRIPTOR *EfiMemoryMapEnd;
- EFI_MEMORY_DESCRIPTOR *EfiEntry;
- EFI_MEMORY_DESCRIPTOR *NextEfiEntry;
- EFI_MEMORY_DESCRIPTOR TempEfiEntry;
- UINTN EfiMemoryMapSize;
- UINTN EfiMapKey;
- UINTN EfiDescriptorSize;
- UINT32 EfiDescriptorVersion;
- UINTN Index;
- EFI_PEI_HOB_POINTERS Hob;
- EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;
- UINTN TempIndex;
- UINTN IndexSort;
- UINTN TempNextIndex;
- EFI_E820_ENTRY64 TempE820;
- EFI_ACPI_MEMORY_TYPE TempType;
- BOOLEAN ChangedFlag;
- UINTN Above1MIndex;
- UINT64 MemoryBlockLength;
-
- E820Table = (EFI_E820_ENTRY64 *)Private->E820Table;
-
- //
- // Get the EFI memory map.
- //
- EfiMemoryMapSize = 0;
- EfiMemoryMap = NULL;
- Status = gBS->GetMemoryMap (
- &EfiMemoryMapSize,
- EfiMemoryMap,
- &EfiMapKey,
- &EfiDescriptorSize,
- &EfiDescriptorVersion
- );
- ASSERT (Status == EFI_BUFFER_TOO_SMALL);
-
- do {
- //
- // Use size returned for the AllocatePool.
- // We don't just multiply by 2 since the "for" loop below terminates on
- // EfiMemoryMapEnd which is dependent upon EfiMemoryMapSize. Otherwise
- // we process bogus entries and create bogus E820 entries.
- //
- EfiMemoryMap = (EFI_MEMORY_DESCRIPTOR *)AllocatePool (EfiMemoryMapSize);
- ASSERT (EfiMemoryMap != NULL);
- Status = gBS->GetMemoryMap (
- &EfiMemoryMapSize,
- EfiMemoryMap,
- &EfiMapKey,
- &EfiDescriptorSize,
- &EfiDescriptorVersion
- );
- if (EFI_ERROR (Status)) {
- FreePool (EfiMemoryMap);
- }
- } while (Status == EFI_BUFFER_TOO_SMALL);
-
- ASSERT_EFI_ERROR (Status);
-
- //
- // Punch in the E820 table for memory less than 1 MB.
- // Assume ZeroMem () has been done on data structure.
- //
- //
- // First entry is 0 to (640k - EBDA)
- //
- ACCESS_PAGE0_CODE (
- E820Table[0].BaseAddr = 0;
- E820Table[0].Length = (UINT64)((*(UINT16 *)(UINTN)0x40E) << 4);
- E820Table[0].Type = EfiAcpiAddressRangeMemory;
- );
-
- //
- // Second entry is (640k - EBDA) to 640k
- //
- E820Table[1].BaseAddr = E820Table[0].Length;
- E820Table[1].Length = (UINT64)((640 * 1024) - E820Table[0].Length);
- E820Table[1].Type = EfiAcpiAddressRangeReserved;
-
- //
- // Third Entry is legacy BIOS
- // DO NOT CLAIM region from 0xA0000-0xDFFFF. OS can use free areas
- // to page in memory under 1MB.
- // Omit region from 0xE0000 to start of BIOS, if any. This can be
- // used for a multiple reasons including OPROMS.
- //
-
- //
- // The CSM binary image size is not the actually size that CSM binary used,
- // to avoid memory corrupt, we declare the 0E0000 - 0FFFFF is used by CSM binary.
- //
- E820Table[2].BaseAddr = 0xE0000;
- E820Table[2].Length = 0x20000;
- E820Table[2].Type = EfiAcpiAddressRangeReserved;
-
- Above1MIndex = 2;
-
- //
- // Process the EFI map to produce E820 map;
- //
-
- //
- // Sort memory map from low to high
- //
- EfiEntry = EfiMemoryMap;
- NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);
- EfiMemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)EfiMemoryMap + EfiMemoryMapSize);
- while (EfiEntry < EfiMemoryMapEnd) {
- while (NextEfiEntry < EfiMemoryMapEnd) {
- if (EfiEntry->PhysicalStart > NextEfiEntry->PhysicalStart) {
- CopyMem (&TempEfiEntry, EfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));
- CopyMem (EfiEntry, NextEfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));
- CopyMem (NextEfiEntry, &TempEfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));
- }
-
- NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (NextEfiEntry, EfiDescriptorSize);
- }
-
- EfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);
- NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);
- }
-
- EfiEntry = EfiMemoryMap;
- EfiMemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)EfiMemoryMap + EfiMemoryMapSize);
- for (Index = Above1MIndex; (EfiEntry < EfiMemoryMapEnd) && (Index < EFI_MAX_E820_ENTRY - 1); ) {
- MemoryBlockLength = (UINT64)(LShiftU64 (EfiEntry->NumberOfPages, 12));
- if ((EfiEntry->PhysicalStart + MemoryBlockLength) < 0x100000) {
- //
- // Skip the memory block if under 1MB
- //
- } else {
- if (EfiEntry->PhysicalStart < 0x100000) {
- //
- // When the memory block spans below 1MB, ensure the memory block start address is at least 1MB
- //
- MemoryBlockLength -= 0x100000 - EfiEntry->PhysicalStart;
- EfiEntry->PhysicalStart = 0x100000;
- }
-
- //
- // Convert memory type to E820 type
- //
- TempType = EfiMemoryTypeToE820Type (EfiEntry->Type);
-
- if ((E820Table[Index].Type == TempType) && (EfiEntry->PhysicalStart == (E820Table[Index].BaseAddr + E820Table[Index].Length))) {
- //
- // Grow an existing entry
- //
- E820Table[Index].Length += MemoryBlockLength;
- } else {
- //
- // Make a new entry
- //
- ++Index;
- E820Table[Index].BaseAddr = EfiEntry->PhysicalStart;
- E820Table[Index].Length = MemoryBlockLength;
- E820Table[Index].Type = TempType;
- }
- }
-
- EfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);
- }
-
- FreePool (EfiMemoryMap);
-
- //
- // Process the reserved memory map to produce E820 map ;
- //
- for (Hob.Raw = GetHobList (); !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {
- if ((Hob.Raw != NULL) && (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR)) {
- ResourceHob = Hob.ResourceDescriptor;
- if (((ResourceHob->ResourceType == EFI_RESOURCE_MEMORY_MAPPED_IO) ||
- (ResourceHob->ResourceType == EFI_RESOURCE_FIRMWARE_DEVICE) ||
- (ResourceHob->ResourceType == EFI_RESOURCE_MEMORY_RESERVED)) &&
- (ResourceHob->PhysicalStart > 0x100000) &&
- (Index < EFI_MAX_E820_ENTRY - 1))
- {
- ++Index;
- E820Table[Index].BaseAddr = ResourceHob->PhysicalStart;
- E820Table[Index].Length = ResourceHob->ResourceLength;
- E820Table[Index].Type = EfiAcpiAddressRangeReserved;
- }
- }
- }
-
- Index++;
- Private->IntThunk->EfiToLegacy16InitTable.NumberE820Entries = (UINT32)Index;
- Private->IntThunk->EfiToLegacy16BootTable.NumberE820Entries = (UINT32)Index;
- Private->NumberE820Entries = (UINT32)Index;
- *Size = (UINTN)(Index * sizeof (EFI_E820_ENTRY64));
-
- //
- // Sort E820Table from low to high
- //
- for (TempIndex = 0; TempIndex < Index; TempIndex++) {
- ChangedFlag = FALSE;
- for (TempNextIndex = 1; TempNextIndex < Index - TempIndex; TempNextIndex++) {
- if (E820Table[TempNextIndex - 1].BaseAddr > E820Table[TempNextIndex].BaseAddr) {
- ChangedFlag = TRUE;
- TempE820.BaseAddr = E820Table[TempNextIndex - 1].BaseAddr;
- TempE820.Length = E820Table[TempNextIndex - 1].Length;
- TempE820.Type = E820Table[TempNextIndex - 1].Type;
-
- E820Table[TempNextIndex - 1].BaseAddr = E820Table[TempNextIndex].BaseAddr;
- E820Table[TempNextIndex - 1].Length = E820Table[TempNextIndex].Length;
- E820Table[TempNextIndex - 1].Type = E820Table[TempNextIndex].Type;
-
- E820Table[TempNextIndex].BaseAddr = TempE820.BaseAddr;
- E820Table[TempNextIndex].Length = TempE820.Length;
- E820Table[TempNextIndex].Type = TempE820.Type;
- }
- }
-
- if (!ChangedFlag) {
- break;
- }
- }
-
- //
- // Remove the overlap range
- //
- for (TempIndex = 1; TempIndex < Index; TempIndex++) {
- if ((E820Table[TempIndex - 1].BaseAddr <= E820Table[TempIndex].BaseAddr) &&
- ((E820Table[TempIndex - 1].BaseAddr + E820Table[TempIndex - 1].Length) >=
- (E820Table[TempIndex].BaseAddr +E820Table[TempIndex].Length)))
- {
- //
- // Overlap range is found
- //
- ASSERT (E820Table[TempIndex - 1].Type == E820Table[TempIndex].Type);
-
- if (TempIndex == Index - 1) {
- E820Table[TempIndex].BaseAddr = 0;
- E820Table[TempIndex].Length = 0;
- E820Table[TempIndex].Type = (EFI_ACPI_MEMORY_TYPE)0;
- Index--;
- break;
- } else {
- for (IndexSort = TempIndex; IndexSort < Index - 1; IndexSort++) {
- E820Table[IndexSort].BaseAddr = E820Table[IndexSort + 1].BaseAddr;
- E820Table[IndexSort].Length = E820Table[IndexSort + 1].Length;
- E820Table[IndexSort].Type = E820Table[IndexSort + 1].Type;
- }
-
- Index--;
- }
- }
- }
-
- Private->IntThunk->EfiToLegacy16InitTable.NumberE820Entries = (UINT32)Index;
- Private->IntThunk->EfiToLegacy16BootTable.NumberE820Entries = (UINT32)Index;
- Private->NumberE820Entries = (UINT32)Index;
- *Size = (UINTN)(Index * sizeof (EFI_E820_ENTRY64));
-
- //
- // Determine OS usable memory above 1MB
- //
- Private->IntThunk->EfiToLegacy16BootTable.OsMemoryAbove1Mb = 0x0000;
- for (TempIndex = Above1MIndex; TempIndex < Index; TempIndex++) {
- if ((E820Table[TempIndex].BaseAddr >= 0x100000) && (E820Table[TempIndex].BaseAddr < 0x100000000ULL)) {
- // not include above 4G memory
- //
- // ACPIReclaimMemory is also usable memory for ACPI OS, after OS dumps all ACPI tables.
- //
- if ((E820Table[TempIndex].Type == EfiAcpiAddressRangeMemory) || (E820Table[TempIndex].Type == EfiAcpiAddressRangeACPI)) {
- Private->IntThunk->EfiToLegacy16BootTable.OsMemoryAbove1Mb += (UINT32)(E820Table[TempIndex].Length);
- } else {
- break; // break at first not normal memory, because SMM may use reserved memory.
- }
- }
- }
-
- Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb = Private->IntThunk->EfiToLegacy16BootTable.OsMemoryAbove1Mb;
-
- //
- // Print DEBUG information
- //
- for (TempIndex = 0; TempIndex < Index; TempIndex++) {
- DEBUG ((
- DEBUG_INFO,
- "E820[%2d]: 0x%016lx - 0x%016lx, Type = %d\n",
- TempIndex,
- E820Table[TempIndex].BaseAddr,
- (E820Table[TempIndex].BaseAddr + E820Table[TempIndex].Length),
- E820Table[TempIndex].Type
- ));
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Fill in the standard BDA and EBDA stuff prior to legacy Boot
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosCompleteBdaBeforeBoot (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- BDA_STRUC *Bda;
- UINT16 MachineConfig;
- DEVICE_PRODUCER_DATA_HEADER *SioPtr;
-
- Bda = (BDA_STRUC *)((UINTN)0x400);
- MachineConfig = 0;
-
- SioPtr = &(Private->IntThunk->EfiToLegacy16BootTable.SioData);
- Bda->Com1 = SioPtr->Serial[0].Address;
- Bda->Com2 = SioPtr->Serial[1].Address;
- Bda->Com3 = SioPtr->Serial[2].Address;
- Bda->Com4 = SioPtr->Serial[3].Address;
-
- if (SioPtr->Serial[0].Address != 0x00) {
- MachineConfig += 0x200;
- }
-
- if (SioPtr->Serial[1].Address != 0x00) {
- MachineConfig += 0x200;
- }
-
- if (SioPtr->Serial[2].Address != 0x00) {
- MachineConfig += 0x200;
- }
-
- if (SioPtr->Serial[3].Address != 0x00) {
- MachineConfig += 0x200;
- }
-
- Bda->Lpt1 = SioPtr->Parallel[0].Address;
- Bda->Lpt2 = SioPtr->Parallel[1].Address;
- Bda->Lpt3 = SioPtr->Parallel[2].Address;
-
- if (SioPtr->Parallel[0].Address != 0x00) {
- MachineConfig += 0x4000;
- }
-
- if (SioPtr->Parallel[1].Address != 0x00) {
- MachineConfig += 0x4000;
- }
-
- if (SioPtr->Parallel[2].Address != 0x00) {
- MachineConfig += 0x4000;
- }
-
- Bda->NumberOfDrives = (UINT8)(Bda->NumberOfDrives + Private->IdeDriveCount);
- if (SioPtr->Floppy.NumberOfFloppy != 0x00) {
- MachineConfig = (UINT16)(MachineConfig + 0x01 + (SioPtr->Floppy.NumberOfFloppy - 1) * 0x40);
- Bda->FloppyXRate = 0x07;
- }
-
- Bda->Lpt1_2Timeout = 0x1414;
- Bda->Lpt3_4Timeout = 0x1414;
- Bda->Com1_2Timeout = 0x0101;
- Bda->Com3_4Timeout = 0x0101;
-
- //
- // Force VGA and Coprocessor, indicate 101/102 keyboard
- //
- MachineConfig = (UINT16)(MachineConfig + 0x00 + 0x02 + (SioPtr->MousePresent * 0x04));
- Bda->MachineConfig = MachineConfig;
-
- return EFI_SUCCESS;
-}
-
-/**
- Fill in the standard BDA for Keyboard LEDs
-
- @param This Protocol instance pointer.
- @param Leds Current LED status
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosUpdateKeyboardLedStatus (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT8 Leds
- )
-{
- LEGACY_BIOS_INSTANCE *Private;
- BDA_STRUC *Bda;
- UINT8 LocalLeds;
- EFI_IA32_REGISTER_SET Regs;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
-
- ACCESS_PAGE0_CODE (
- Bda = (BDA_STRUC *)((UINTN)0x400);
- LocalLeds = Leds;
- Bda->LedStatus = (UINT8)((Bda->LedStatus &~0x07) | LocalLeds);
- LocalLeds = (UINT8)(LocalLeds << 4);
- Bda->ShiftStatus = (UINT8)((Bda->ShiftStatus &~0x70) | LocalLeds);
- LocalLeds = (UINT8)(Leds & 0x20);
- Bda->KeyboardStatus = (UINT8)((Bda->KeyboardStatus &~0x20) | LocalLeds);
- );
-
- //
- // Call into Legacy16 code to allow it to do any processing
- //
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
- Regs.X.AX = Legacy16SetKeyboardLeds;
- Regs.H.CL = Leds;
-
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Private->Legacy16Table->Compatibility16CallSegment,
- Private->Legacy16Table->Compatibility16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- return EFI_SUCCESS;
-}
-
-/**
- Fill in the standard CMOS stuff prior to legacy Boot
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosCompleteStandardCmosBeforeBoot (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- UINT8 Bda;
- UINT8 Floppy;
- UINT32 Size;
-
- //
- // Update CMOS locations
- // 10 floppy
- // 12,19,1A - ignore as OS don't use them and there is no standard due
- // to large capacity drives
- // CMOS 14 = BDA 40:10 plus bit 3(display enabled)
- //
- ACCESS_PAGE0_CODE (
- Bda = (UINT8)(*((UINT8 *)((UINTN)0x410)) | BIT3);
- );
-
- //
- // Force display enabled
- //
- Floppy = 0x00;
- if ((Bda & BIT0) != 0) {
- Floppy = BIT6;
- }
-
- //
- // Check if 2.88MB floppy set
- //
- if ((Bda & (BIT7 | BIT6)) != 0) {
- Floppy = (UINT8)(Floppy | BIT1);
- }
-
- LegacyWriteStandardCmos (CMOS_10, Floppy);
- LegacyWriteStandardCmos (CMOS_14, Bda);
-
- //
- // Force Status Register A to set rate selection bits and divider
- //
- LegacyWriteStandardCmos (CMOS_0A, 0x26);
-
- //
- // redo memory size since it can change
- //
- Size = (15 * SIZE_1MB) >> 10;
- if (Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb < (15 * SIZE_1MB)) {
- Size = Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb >> 10;
- }
-
- LegacyWriteStandardCmos (CMOS_17, (UINT8)(Size & 0xFF));
- LegacyWriteStandardCmos (CMOS_30, (UINT8)(Size & 0xFF));
- LegacyWriteStandardCmos (CMOS_18, (UINT8)(Size >> 8));
- LegacyWriteStandardCmos (CMOS_31, (UINT8)(Size >> 8));
-
- LegacyCalculateWriteStandardCmosChecksum ();
-
- return EFI_SUCCESS;
-}
-
-/**
- Relocate this image under 4G memory for IPF.
-
- @param ImageHandle Handle of driver image.
- @param SystemTable Pointer to system table.
-
- @retval EFI_SUCCESS Image successfully relocated.
- @retval EFI_ABORTED Failed to relocate image.
-
-**/
-EFI_STATUS
-RelocateImageUnder4GIfNeeded (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- return EFI_SUCCESS;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyCmos.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyCmos.c deleted file mode 100644 index 7220d8e..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyCmos.c +++ /dev/null @@ -1,117 +0,0 @@ -/** @file
- This code fills in standard CMOS values and updates the standard CMOS
- checksum. The Legacy16 code or LegacyBiosPlatform.c is responsible for
- non-standard CMOS locations and non-standard checksums.
-
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-
-/**
- Read CMOS register through index/data port.
-
- @param[in] Index The index of the CMOS register to read.
-
- @return The data value from the CMOS register specified by Index.
-
-**/
-UINT8
-LegacyReadStandardCmos (
- IN UINT8 Index
- )
-{
- IoWrite8 (PORT_70, Index);
- return IoRead8 (PORT_71);
-}
-
-/**
- Write CMOS register through index/data port.
-
- @param[in] Index The index of the CMOS register to write.
- @param[in] Value The value of CMOS register to write.
-
- @return The value written to the CMOS register specified by Index.
-
-**/
-UINT8
-LegacyWriteStandardCmos (
- IN UINT8 Index,
- IN UINT8 Value
- )
-{
- IoWrite8 (PORT_70, Index);
- return IoWrite8 (PORT_71, Value);
-}
-
-/**
- Calculate the new standard CMOS checksum and write it.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS Calculate 16-bit checksum successfully
-
-**/
-EFI_STATUS
-LegacyCalculateWriteStandardCmosChecksum (
- VOID
- )
-{
- UINT8 Register;
- UINT16 Checksum;
-
- for (Checksum = 0, Register = 0x10; Register < 0x2e; Register++) {
- Checksum = (UINT16)(Checksum + LegacyReadStandardCmos (Register));
- }
-
- LegacyWriteStandardCmos (CMOS_2E, (UINT8)(Checksum >> 8));
- LegacyWriteStandardCmos (CMOS_2F, (UINT8)(Checksum & 0xff));
- return EFI_SUCCESS;
-}
-
-/**
- Fill in the standard CMOS stuff before Legacy16 load
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosInitCmos (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- UINT32 Size;
-
- //
- // Clear all errors except RTC lost power
- //
- LegacyWriteStandardCmos (CMOS_0E, (UINT8)(LegacyReadStandardCmos (CMOS_0E) & BIT7));
-
- //
- // Update CMOS locations 15,16,17,18,30,31 and 32
- // CMOS 16,15 = 640Kb = 0x280
- // CMOS 18,17 = 31,30 = 15Mb max in 1Kb increments =0x3C00 max
- // CMOS 32 = 0x20
- //
- LegacyWriteStandardCmos (CMOS_15, 0x80);
- LegacyWriteStandardCmos (CMOS_16, 0x02);
-
- Size = 15 * SIZE_1MB;
- if (Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb < (15 * SIZE_1MB)) {
- Size = Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb >> 10;
- }
-
- LegacyWriteStandardCmos (CMOS_17, (UINT8)(Size & 0xFF));
- LegacyWriteStandardCmos (CMOS_30, (UINT8)(Size & 0xFF));
- LegacyWriteStandardCmos (CMOS_18, (UINT8)(Size >> 8));
- LegacyWriteStandardCmos (CMOS_31, (UINT8)(Size >> 8));
-
- LegacyCalculateWriteStandardCmosChecksum ();
-
- return EFI_SUCCESS;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyIde.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyIde.c deleted file mode 100644 index 323f76c..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyIde.c +++ /dev/null @@ -1,315 +0,0 @@ -/** @file
- Collect IDE information from Native EFI Driver
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-
-BOOLEAN mIdeDataBuiltFlag = FALSE;
-
-/**
- Collect IDE Inquiry data from the IDE disks
-
- @param Private Legacy BIOS Instance data
- @param HddInfo Hdd Information
- @param Flag Reconnect IdeController or not
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosBuildIdeData (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN HDD_INFO **HddInfo,
- IN UINT16 Flag
- )
-{
- EFI_STATUS Status;
- EFI_HANDLE IdeController;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- EFI_DISK_INFO_PROTOCOL *DiskInfo;
- UINT32 IdeChannel;
- UINT32 IdeDevice;
- UINT32 Size;
- UINT8 *InquiryData;
- UINT32 InquiryDataSize;
- HDD_INFO *LocalHddInfo;
- UINT32 PciIndex;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePathNode;
- PCI_DEVICE_PATH *PciDevicePath;
-
- //
- // Only build data once
- // We have a problem with GetBbsInfo in that it can be invoked two
- // places. Once in BDS, when all EFI drivers are connected and once in
- // LegacyBoot after all EFI drivers are disconnected causing this routine
- // to hang. In LegacyBoot this function is also called before EFI drivers
- // are disconnected.
- // Cases covered
- // GetBbsInfo invoked in BDS. Both invocations in LegacyBoot ignored.
- // GetBbsInfo not invoked in BDS. First invocation of this function
- // proceeds normally and second via GetBbsInfo ignored.
- //
- PciDevicePath = NULL;
- LocalHddInfo = *HddInfo;
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformIdeHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- (VOID *)&LocalHddInfo
- );
- if (!EFI_ERROR (Status)) {
- IdeController = HandleBuffer[0];
- //
- // Force IDE drive spin up!
- //
- if (Flag != 0) {
- gBS->DisconnectController (
- IdeController,
- NULL,
- NULL
- );
- }
-
- gBS->ConnectController (IdeController, NULL, NULL, FALSE);
-
- //
- // Do GetIdeHandle twice since disconnect/reconnect will switch to native mode
- // And GetIdeHandle will switch to Legacy mode, if required.
- //
- Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformIdeHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- (VOID *)&LocalHddInfo
- );
- }
-
- mIdeDataBuiltFlag = TRUE;
-
- //
- // Get Identity command from all drives
- //
- gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiDiskInfoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
-
- Private->IdeDriveCount = (UINT8)HandleCount;
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiDiskInfoProtocolGuid,
- (VOID **)&DiskInfo
- );
- ASSERT_EFI_ERROR (Status);
-
- if (CompareGuid (&DiskInfo->Interface, &gEfiDiskInfoIdeInterfaceGuid)) {
- //
- // Locate which PCI device
- //
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiDevicePathProtocolGuid,
- (VOID *)&DevicePath
- );
- ASSERT_EFI_ERROR (Status);
-
- DevicePathNode = DevicePath;
- while (!IsDevicePathEnd (DevicePathNode)) {
- TempDevicePathNode = NextDevicePathNode (DevicePathNode);
- if ((DevicePathType (DevicePathNode) == HARDWARE_DEVICE_PATH) &&
- (DevicePathSubType (DevicePathNode) == HW_PCI_DP) &&
- (DevicePathType (TempDevicePathNode) == MESSAGING_DEVICE_PATH) &&
- (DevicePathSubType (TempDevicePathNode) == MSG_ATAPI_DP))
- {
- PciDevicePath = (PCI_DEVICE_PATH *)DevicePathNode;
- break;
- }
-
- DevicePathNode = NextDevicePathNode (DevicePathNode);
- }
-
- if (PciDevicePath == NULL) {
- continue;
- }
-
- //
- // Find start of PCI device in HddInfo. The assumption of the data
- // structure is 2 controllers(channels) per PCI device and each
- // controller can have 2 drives(devices).
- // HddInfo[PciIndex+0].[0] = Channel[0].Device[0] Primary Master
- // HddInfo[PciIndex+0].[1] = Channel[0].Device[1] Primary Slave
- // HddInfo[PciIndex+1].[0] = Channel[1].Device[0] Secondary Master
- // HddInfo[PciIndex+1].[1] = Channel[1].Device[1] Secondary Slave
- // @bug eventually need to pass in max number of entries
- // for end of for loop
- //
- for (PciIndex = 0; PciIndex < 8; PciIndex++) {
- if ((PciDevicePath->Device == LocalHddInfo[PciIndex].Device) &&
- (PciDevicePath->Function == LocalHddInfo[PciIndex].Function)
- )
- {
- break;
- }
- }
-
- if (PciIndex == 8) {
- continue;
- }
-
- Status = DiskInfo->WhichIde (DiskInfo, &IdeChannel, &IdeDevice);
- if (!EFI_ERROR (Status)) {
- Size = sizeof (ATAPI_IDENTIFY);
- DiskInfo->Identify (
- DiskInfo,
- &LocalHddInfo[PciIndex + IdeChannel].IdentifyDrive[IdeDevice],
- &Size
- );
- if (IdeChannel == 0) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_PRIMARY;
- } else if (IdeChannel == 1) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SECONDARY;
- }
-
- InquiryData = NULL;
- InquiryDataSize = 0;
- Status = DiskInfo->Inquiry (
- DiskInfo,
- NULL,
- &InquiryDataSize
- );
- if (Status == EFI_BUFFER_TOO_SMALL) {
- InquiryData = (UINT8 *)AllocatePool (
- InquiryDataSize
- );
- if (InquiryData != NULL) {
- Status = DiskInfo->Inquiry (
- DiskInfo,
- InquiryData,
- &InquiryDataSize
- );
- }
- } else {
- Status = EFI_DEVICE_ERROR;
- }
-
- //
- // If ATAPI device then Inquiry will pass and ATA fail.
- //
- if (!EFI_ERROR (Status)) {
- ASSERT (InquiryData != NULL);
- //
- // If IdeDevice = 0 then set master bit, else slave bit
- //
- if (IdeDevice == 0) {
- if ((InquiryData[0] & 0x1f) == 0x05) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_ATAPI_CDROM;
- } else if ((InquiryData[0] & 0x1f) == 0x00) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_ATAPI_ZIPDISK;
- }
- } else {
- if ((InquiryData[0] & 0x1f) == 0x05) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_ATAPI_CDROM;
- } else if ((InquiryData[0] & 0x1f) == 0x00) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_ATAPI_ZIPDISK;
- }
- }
-
- FreePool (InquiryData);
- } else {
- if (IdeDevice == 0) {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_IDE;
- } else {
- LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_IDE;
- }
- }
- }
- }
- }
-
- if (HandleBuffer != NULL) {
- FreePool (HandleBuffer);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- If the IDE channel is in compatibility (legacy) mode, remove all
- PCI I/O BAR addresses from the controller.
-
- @param IdeController The handle of target IDE controller
-
-
-**/
-VOID
-InitLegacyIdeController (
- IN EFI_HANDLE IdeController
- )
-{
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINT32 IOBarClear;
- EFI_STATUS Status;
- PCI_TYPE00 PciData;
-
- //
- // If the IDE channel is in compatibility (legacy) mode, remove all
- // PCI I/O BAR addresses from the controller. Some software gets
- // confused if an IDE controller is in compatibility (legacy) mode
- // and has PCI I/O resources allocated
- //
- Status = gBS->HandleProtocol (
- IdeController,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- return;
- }
-
- Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0, sizeof (PciData), &PciData);
- if (EFI_ERROR (Status)) {
- return;
- }
-
- //
- // Check whether this is IDE
- //
- if ((PciData.Hdr.ClassCode[2] != PCI_CLASS_MASS_STORAGE) ||
- (PciData.Hdr.ClassCode[1] != PCI_CLASS_MASS_STORAGE_IDE))
- {
- return;
- }
-
- //
- // Clear bar for legacy IDE
- //
- IOBarClear = 0x00;
- if ((PciData.Hdr.ClassCode[0] & IDE_PI_REGISTER_PNE) == 0) {
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x10, 1, &IOBarClear);
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x14, 1, &IOBarClear);
- }
-
- if ((PciData.Hdr.ClassCode[0] & IDE_PI_REGISTER_SNE) == 0) {
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x18, 1, &IOBarClear);
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x1C, 1, &IOBarClear);
- }
-
- return;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c deleted file mode 100644 index 07ee5ab..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacyPci.c +++ /dev/null @@ -1,3114 +0,0 @@ -/** @file
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-#include <IndustryStandard/Pci30.h>
-
-#define PCI_START_ADDRESS(x) (((x) + 0x7ff) & ~0x7ff)
-
-#define MAX_BRIDGE_INDEX 0x20
-typedef struct {
- UINTN PciSegment;
- UINTN PciBus;
- UINTN PciDevice;
- UINTN PciFunction;
- UINT8 PrimaryBus;
- UINT8 SecondaryBus;
- UINT8 SubordinateBus;
-} BRIDGE_TABLE;
-
-#define ROM_MAX_ENTRIES 24
-BRIDGE_TABLE Bridges[MAX_BRIDGE_INDEX];
-UINTN SortedBridgeIndex[MAX_BRIDGE_INDEX];
-UINTN NumberOfBridges;
-LEGACY_PNP_EXPANSION_HEADER *mBasePnpPtr;
-UINT16 mBbsRomSegment;
-UINTN mHandleCount;
-EFI_HANDLE mVgaHandle;
-BOOLEAN mIgnoreBbsUpdateFlag;
-BOOLEAN mVgaInstallationInProgress = FALSE;
-UINT32 mRomCount = 0x00;
-ROM_INSTANCE_ENTRY mRomEntry[ROM_MAX_ENTRIES];
-EDKII_IOMMU_PROTOCOL *mIoMmu;
-
-/**
- Query shadowed legacy ROM parameters registered by RomShadow() previously.
-
- @param PciHandle PCI device whos ROM has been shadowed
- @param DiskStart DiskStart value from EFI_LEGACY_BIOS_PROTOCOL.InstallPciRom
- @param DiskEnd DiskEnd value from EFI_LEGACY_BIOS_PROTOCOL.InstallPciRom
- @param RomShadowAddress Address where ROM was shadowed
- @param ShadowedSize Runtime size of ROM
-
- @retval EFI_SUCCESS Query Logging successful.
- @retval EFI_NOT_FOUND No logged data found about PciHandle.
-
-**/
-EFI_STATUS
-GetShadowedRomParameters (
- IN EFI_HANDLE PciHandle,
- OUT UINT8 *DiskStart OPTIONAL,
- OUT UINT8 *DiskEnd OPTIONAL,
- OUT VOID **RomShadowAddress OPTIONAL,
- OUT UINTN *ShadowedSize OPTIONAL
- )
-{
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINTN Index;
- UINTN PciSegment;
- UINTN PciBus;
- UINTN PciDevice;
- UINTN PciFunction;
-
- //
- // Get the PCI I/O Protocol on PciHandle
- //
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Get the location of the PCI device
- //
- PciIo->GetLocation (
- PciIo,
- &PciSegment,
- &PciBus,
- &PciDevice,
- &PciFunction
- );
-
- for (Index = 0; Index < mRomCount; Index++) {
- if ((mRomEntry[Index].PciSegment == PciSegment) &&
- (mRomEntry[Index].PciBus == PciBus) &&
- (mRomEntry[Index].PciDevice == PciDevice) &&
- (mRomEntry[Index].PciFunction == PciFunction))
- {
- break;
- }
- }
-
- if (Index == mRomCount) {
- return EFI_NOT_FOUND;
- }
-
- if (DiskStart != NULL) {
- *DiskStart = mRomEntry[Index].DiskStart;
- }
-
- if (DiskEnd != NULL) {
- *DiskEnd = mRomEntry[Index].DiskEnd;
- }
-
- if (RomShadowAddress != NULL) {
- *RomShadowAddress = (VOID *)(UINTN)mRomEntry[Index].ShadowAddress;
- }
-
- if (ShadowedSize != NULL) {
- *ShadowedSize = mRomEntry[Index].ShadowedSize;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Every legacy ROM that is shadowed by the Legacy BIOS driver will be
- registered into this API so that the policy code can know what has
- happend
-
- @param PciHandle PCI device whos ROM is being shadowed
- @param ShadowAddress Address that ROM was shadowed
- @param ShadowedSize Runtime size of ROM
- @param DiskStart DiskStart value from
- EFI_LEGACY_BIOS_PROTOCOL.InstallPciRom
- @param DiskEnd DiskEnd value from
- EFI_LEGACY_BIOS_PROTOCOL.InstallPciRom
-
- @retval EFI_SUCCESS Logging successful.
- @retval EFI_OUT_OF_RESOURCES No remaining room for registering another option
- ROM.
-
-**/
-EFI_STATUS
-RomShadow (
- IN EFI_HANDLE PciHandle,
- IN UINT32 ShadowAddress,
- IN UINT32 ShadowedSize,
- IN UINT8 DiskStart,
- IN UINT8 DiskEnd
- )
-{
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
-
- //
- // See if there is room to register another option ROM
- //
- if (mRomCount >= ROM_MAX_ENTRIES) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // Get the PCI I/O Protocol on PciHandle
- //
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Get the location of the PCI device
- //
- PciIo->GetLocation (
- PciIo,
- &mRomEntry[mRomCount].PciSegment,
- &mRomEntry[mRomCount].PciBus,
- &mRomEntry[mRomCount].PciDevice,
- &mRomEntry[mRomCount].PciFunction
- );
- mRomEntry[mRomCount].ShadowAddress = ShadowAddress;
- mRomEntry[mRomCount].ShadowedSize = ShadowedSize;
- mRomEntry[mRomCount].DiskStart = DiskStart;
- mRomEntry[mRomCount].DiskEnd = DiskEnd;
-
- mRomCount++;
-
- return EFI_SUCCESS;
-}
-
-/**
- Return EFI_SUCCESS if PciHandle has had a legacy BIOS ROM shadowed. This
- information represents every call to RomShadow ()
-
- @param PciHandle PCI device to get status for
-
- @retval EFI_SUCCESS Legacy ROM loaded for this device
- @retval EFI_NOT_FOUND No Legacy ROM loaded for this device
-
-**/
-EFI_STATUS
-IsLegacyRom (
- IN EFI_HANDLE PciHandle
- )
-{
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINTN Index;
- UINTN Segment;
- UINTN Bus;
- UINTN Device;
- UINTN Function;
-
- //
- // Get the PCI I/O Protocol on PciHandle
- //
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Get the location of the PCI device
- //
- PciIo->GetLocation (
- PciIo,
- &Segment,
- &Bus,
- &Device,
- &Function
- );
-
- //
- // See if the option ROM from PciHandle has been previously posted
- //
- for (Index = 0; Index < mRomCount; Index++) {
- if ((mRomEntry[Index].PciSegment == Segment) &&
- (mRomEntry[Index].PciBus == Bus) &&
- (mRomEntry[Index].PciDevice == Device) &&
- (mRomEntry[Index].PciFunction == Function)
- )
- {
- return EFI_SUCCESS;
- }
- }
-
- return EFI_NOT_FOUND;
-}
-
-/**
- Find the PC-AT ROM Image in the raw PCI Option ROM. Also return the
- related information from the header.
-
- @param Csm16Revision The PCI interface version of underlying CSM16
- @param VendorId Vendor ID of the PCI device
- @param DeviceId Device ID of the PCI device
- @param Rom On input pointing to beginning of the raw PCI OpROM
- On output pointing to the first legacy PCI OpROM
- @param ImageSize On input is the size of Raw PCI Rom
- On output is the size of the first legacy PCI ROM
- @param MaxRuntimeImageLength The max runtime image length only valid if OpRomRevision >= 3
- @param OpRomRevision Revision of the PCI Rom
- @param ConfigUtilityCodeHeader Pointer to Configuration Utility Code Header
-
- @retval EFI_SUCCESS Successfully find the legacy PCI ROM
- @retval EFI_NOT_FOUND Failed to find the legacy PCI ROM
-
-**/
-EFI_STATUS
-GetPciLegacyRom (
- IN UINT16 Csm16Revision,
- IN UINT16 VendorId,
- IN UINT16 DeviceId,
- IN OUT VOID **Rom,
- IN OUT UINTN *ImageSize,
- OUT UINTN *MaxRuntimeImageLength OPTIONAL,
- OUT UINT8 *OpRomRevision OPTIONAL,
- OUT VOID **ConfigUtilityCodeHeader OPTIONAL
- )
-{
- BOOLEAN Match;
- UINT16 *DeviceIdList;
- EFI_PCI_ROM_HEADER RomHeader;
- PCI_3_0_DATA_STRUCTURE *Pcir;
- VOID *BackupImage;
- VOID *BestImage;
-
- if (*ImageSize < sizeof (EFI_PCI_ROM_HEADER)) {
- return EFI_NOT_FOUND;
- }
-
- BestImage = NULL;
- BackupImage = NULL;
- RomHeader.Raw = *Rom;
- while (RomHeader.Generic->Signature == PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
- if ((RomHeader.Generic->PcirOffset == 0) ||
- ((RomHeader.Generic->PcirOffset & 3) != 0) ||
- (*ImageSize < RomHeader.Raw - (UINT8 *)*Rom + RomHeader.Generic->PcirOffset + sizeof (PCI_DATA_STRUCTURE)))
- {
- break;
- }
-
- Pcir = (PCI_3_0_DATA_STRUCTURE *)(RomHeader.Raw + RomHeader.Generic->PcirOffset);
- //
- // Check signature in the PCI Data Structure.
- //
- if (Pcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {
- break;
- }
-
- if (((UINTN)RomHeader.Raw - (UINTN)*Rom) + Pcir->ImageLength * 512 > *ImageSize) {
- break;
- }
-
- if (Pcir->CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {
- Match = FALSE;
- if (Pcir->VendorId == VendorId) {
- if (Pcir->DeviceId == DeviceId) {
- Match = TRUE;
- } else if ((Pcir->Revision >= 3) && (Pcir->DeviceListOffset != 0)) {
- DeviceIdList = (UINT16 *)(((UINT8 *)Pcir) + Pcir->DeviceListOffset);
- //
- // Checking the device list
- //
- while (*DeviceIdList != 0) {
- if (*DeviceIdList == DeviceId) {
- Match = TRUE;
- break;
- }
-
- DeviceIdList++;
- }
- }
- }
-
- if (Match) {
- if (Csm16Revision >= 0x0300) {
- //
- // Case 1: CSM16 3.0
- //
- if (Pcir->Revision >= 3) {
- //
- // case 1.1: meets OpRom 3.0
- // Perfect!!!
- //
- BestImage = RomHeader.Raw;
- break;
- } else {
- //
- // case 1.2: meets OpRom 2.x
- // Store it and try to find the OpRom 3.0
- //
- BackupImage = RomHeader.Raw;
- }
- } else {
- //
- // Case 2: CSM16 2.x
- //
- if (Pcir->Revision >= 3) {
- //
- // case 2.1: meets OpRom 3.0
- // Store it and try to find the OpRom 2.x
- //
- BackupImage = RomHeader.Raw;
- } else {
- //
- // case 2.2: meets OpRom 2.x
- // Perfect!!!
- //
- BestImage = RomHeader.Raw;
- break;
- }
- }
- } else {
- DEBUG ((DEBUG_ERROR, "GetPciLegacyRom - OpRom not match (%04x-%04x)\n", (UINTN)VendorId, (UINTN)DeviceId));
- }
- }
-
- if ((Pcir->Indicator & 0x80) == 0x80) {
- break;
- } else {
- RomHeader.Raw += 512 * Pcir->ImageLength;
- }
- }
-
- if (BestImage == NULL) {
- if (BackupImage == NULL) {
- return EFI_NOT_FOUND;
- }
-
- //
- // The versions of CSM16 and OpRom don't match exactly
- //
- BestImage = BackupImage;
- }
-
- RomHeader.Raw = BestImage;
- Pcir = (PCI_3_0_DATA_STRUCTURE *)(RomHeader.Raw + RomHeader.Generic->PcirOffset);
- *Rom = BestImage;
- *ImageSize = Pcir->ImageLength * 512;
-
- if (MaxRuntimeImageLength != NULL) {
- if (Pcir->Revision < 3) {
- *MaxRuntimeImageLength = 0;
- } else {
- *MaxRuntimeImageLength = Pcir->MaxRuntimeImageLength * 512;
- }
- }
-
- if (OpRomRevision != NULL) {
- //
- // Optional return PCI Data Structure revision
- //
- if (Pcir->Length >= 0x1C) {
- *OpRomRevision = Pcir->Revision;
- } else {
- *OpRomRevision = 0;
- }
- }
-
- if (ConfigUtilityCodeHeader != NULL) {
- //
- // Optional return ConfigUtilityCodeHeaderOffset supported by the PC-AT ROM
- //
- if ((Pcir->Revision < 3) || (Pcir->ConfigUtilityCodeHeaderOffset == 0)) {
- *ConfigUtilityCodeHeader = NULL;
- } else {
- *ConfigUtilityCodeHeader = RomHeader.Raw + Pcir->ConfigUtilityCodeHeaderOffset;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Build a table of bridge info for PIRQ translation.
-
- @param RoutingTable RoutingTable obtained from Platform.
- @param RoutingTableEntries Number of RoutingTable entries.
-
- @retval EFI_SUCCESS New Subordinate bus.
- @retval EFI_NOT_FOUND No more Subordinate busses.
-
-**/
-EFI_STATUS
-CreateBridgeTable (
- IN EFI_LEGACY_IRQ_ROUTING_ENTRY *RoutingTable,
- IN UINTN RoutingTableEntries
- )
-{
- EFI_STATUS Status;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN BridgeIndex;
- UINTN Index;
- UINTN Index1;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE01 PciConfigHeader;
- BRIDGE_TABLE SlotBridges[MAX_BRIDGE_INDEX];
- UINTN SlotBridgeIndex;
-
- BridgeIndex = 0x00;
- SlotBridgeIndex = 0x00;
-
- //
- // Assumption is table is built from low bus to high bus numbers.
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return EFI_NOT_FOUND;
- }
-
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
-
- if (IS_PCI_P2P (&PciConfigHeader) && (BridgeIndex < MAX_BRIDGE_INDEX)) {
- PciIo->GetLocation (
- PciIo,
- &Bridges[BridgeIndex].PciSegment,
- &Bridges[BridgeIndex].PciBus,
- &Bridges[BridgeIndex].PciDevice,
- &Bridges[BridgeIndex].PciFunction
- );
-
- Bridges[BridgeIndex].PrimaryBus = PciConfigHeader.Bridge.PrimaryBus;
-
- Bridges[BridgeIndex].SecondaryBus = PciConfigHeader.Bridge.SecondaryBus;
-
- Bridges[BridgeIndex].SubordinateBus = PciConfigHeader.Bridge.SubordinateBus;
-
- for (Index1 = 0; Index1 < RoutingTableEntries; Index1++) {
- //
- // Test whether we have found the Bridge in the slot, must be the one that directly interfaced to the board
- // Once we find one, store it in the SlotBridges[]
- //
- if ( (RoutingTable[Index1].Slot != 0) && (Bridges[BridgeIndex].PrimaryBus == RoutingTable[Index1].Bus)
- && ((Bridges[BridgeIndex].PciDevice << 3) == RoutingTable[Index1].Device))
- {
- CopyMem (&SlotBridges[SlotBridgeIndex], &Bridges[BridgeIndex], sizeof (BRIDGE_TABLE));
- SlotBridgeIndex++;
-
- break;
- }
- }
-
- ++BridgeIndex;
- }
- }
-
- //
- // Pack up Bridges by removing those useless ones
- //
- for (Index = 0; Index < BridgeIndex;) {
- for (Index1 = 0; Index1 < SlotBridgeIndex; Index1++) {
- if (((Bridges[Index].PciBus == SlotBridges[Index1].PrimaryBus) && (Bridges[Index].PciDevice == SlotBridges[Index1].PciDevice)) ||
- ((Bridges[Index].PciBus >= SlotBridges[Index1].SecondaryBus) && (Bridges[Index].PciBus <= SlotBridges[Index1].SubordinateBus)))
- {
- //
- // We have found one that meets our criteria
- //
- Index++;
- break;
- }
- }
-
- //
- // This one doesn't meet criteria, pack it
- //
- if (Index1 >= SlotBridgeIndex) {
- for (Index1 = Index; BridgeIndex > 1 && Index1 < BridgeIndex - 1; Index1++) {
- CopyMem (&Bridges[Index1], &Bridges[Index1 + 1], sizeof (BRIDGE_TABLE));
- }
-
- BridgeIndex--;
- }
- }
-
- NumberOfBridges = BridgeIndex;
-
- //
- // Sort bridges low to high by Secondary bus followed by subordinate bus
- //
- if (NumberOfBridges > 1) {
- Index = 0;
- do {
- SortedBridgeIndex[Index] = Index;
- ++Index;
- } while (Index < NumberOfBridges);
-
- for (Index = 0; Index < NumberOfBridges - 1; Index++) {
- for (Index1 = Index + 1; Index1 < NumberOfBridges; Index1++) {
- if (Bridges[Index].SecondaryBus > Bridges[Index1].SecondaryBus) {
- SortedBridgeIndex[Index] = Index1;
- SortedBridgeIndex[Index1] = Index;
- }
-
- if ((Bridges[Index].SecondaryBus == Bridges[Index1].SecondaryBus) &&
- (Bridges[Index].SubordinateBus > Bridges[Index1].SubordinateBus)
- )
- {
- SortedBridgeIndex[Index] = Index1;
- SortedBridgeIndex[Index1] = Index;
- }
- }
- }
- }
-
- FreePool (HandleBuffer);
- return EFI_SUCCESS;
-}
-
-/**
- Find base Bridge for device.
-
- @param Private Legacy BIOS Instance data
- @param PciBus Input = Bus of device.
- @param PciDevice Input = Device.
- @param RoutingTable The platform specific routing table
- @param RoutingTableEntries Number of entries in table
-
- @retval EFI_SUCCESS At base bus.
- @retval EFI_NOT_FOUND Behind a bridge.
-
-**/
-EFI_STATUS
-GetBaseBus (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN UINTN PciBus,
- IN UINTN PciDevice,
- IN EFI_LEGACY_IRQ_ROUTING_ENTRY *RoutingTable,
- IN UINTN RoutingTableEntries
- )
-{
- UINTN Index;
-
- for (Index = 0; Index < RoutingTableEntries; Index++) {
- if ((RoutingTable[Index].Bus == PciBus) && (RoutingTable[Index].Device == (PciDevice << 3))) {
- return EFI_SUCCESS;
- }
- }
-
- return EFI_NOT_FOUND;
-}
-
-/**
- Translate PIRQ through busses
-
- @param Private Legacy BIOS Instance data
- @param PciBus Input = Bus of device. Output = Translated Bus
- @param PciDevice Input = Device. Output = Translated Device
- @param PciFunction Input = Function. Output = Translated Function
- @param PirqIndex Input = Original PIRQ index. If single function
- device then 0, otherwise 0-3.
- Output = Translated Index
-
- @retval EFI_SUCCESS Pirq successfully translated.
- @retval EFI_NOT_FOUND The device is not behind any known bridge.
-
-**/
-EFI_STATUS
-TranslateBusPirq (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN OUT UINTN *PciBus,
- IN OUT UINTN *PciDevice,
- IN OUT UINTN *PciFunction,
- IN OUT UINT8 *PirqIndex
- )
-{
- /*
- This routine traverses the PCI busses from base slot
- and translates the PIRQ register to the appropriate one.
-
- Example:
-
- Bus 0, Device 1 is PCI-PCI bridge that all PCI slots reside on.
- Primary bus# = 0
- Secondary bus # = 1
- Subordinate bus # is highest bus # behind this bus
- Bus 1, Device 0 is Slot 0 and is not a bridge.
- Bus 1, Device 1 is Slot 1 and is a bridge.
- Slot PIRQ routing is A,B,C,D.
- Primary bus # = 1
- Secondary bus # = 2
- Subordinate bus # = 5
- Bus 2, Device 6 is a bridge. It has no bridges behind it.
- Primary bus # = 2
- Secondary bus # = 3
- Subordinate bus # = 3
- Bridge PIRQ routing is C,D,A,B
- Bus 2, Device 7 is a bridge. It has 1 bridge behind it.
- Primary bus # = 2
- Secondary bus = 4 Device 6 takes bus 2.
- Subordinate bus = 5.
- Bridge PIRQ routing is D,A,B,C
- Bus 4, Device 2 is a bridge. It has no bridges behind it.
- Primary bus # = 4
- Secondary bus # = 5
- Subordinate bus = 5
- Bridge PIRQ routing is B,C,D,A
- Bus 5, Device 1 is to be programmed.
- Device PIRQ routing is C,D,A,B
-
-
-Search busses starting from slot bus for final bus >= Secondary bus and
-final bus <= Subordinate bus. Assumption is bus entries increase in bus
-number.
-Starting PIRQ is A,B,C,D.
-Bus 2, Device 7 satisfies search criteria. Rotate (A,B,C,D) left by device
- 7 modulo 4 giving (D,A,B,C).
-Bus 4, Device 2 satisfies search criteria. Rotate (D,A,B,C) left by 2 giving
- (B,C,D,A).
-No other busses match criteria. Device to be programmed is Bus 5, Device 1.
-Rotate (B,C,D,A) by 1 giving C,D,A,B. Translated PIRQ is C.
-
-*/
- UINTN LocalBus;
- UINTN LocalDevice;
- UINTN BaseBus;
- UINTN BaseDevice;
- UINTN BaseFunction;
- UINT8 LocalPirqIndex;
- BOOLEAN BaseIndexFlag;
- UINTN BridgeIndex;
- UINTN SBridgeIndex;
-
- BaseIndexFlag = FALSE;
- BridgeIndex = 0x00;
-
- LocalPirqIndex = *PirqIndex;
- LocalBus = *PciBus;
- LocalDevice = *PciDevice;
- BaseBus = *PciBus;
- BaseDevice = *PciDevice;
- BaseFunction = *PciFunction;
-
- //
- // LocalPirqIndex list PIRQs in rotated fashion
- // = 0 A,B,C,D
- // = 1 B,C,D,A
- // = 2 C,D,A,B
- // = 3 D,A,B,C
- //
-
- for (BridgeIndex = 0; BridgeIndex < NumberOfBridges; BridgeIndex++) {
- SBridgeIndex = SortedBridgeIndex[BridgeIndex];
- //
- // Check if device behind this bridge
- //
- if ((LocalBus >= Bridges[SBridgeIndex].SecondaryBus) && (LocalBus <= Bridges[SBridgeIndex].SubordinateBus)) {
- //
- // If BaseIndexFlag = FALSE then have found base bridge, i.e
- // bridge in slot. Save info for use by IRQ routing table.
- //
- if (!BaseIndexFlag) {
- BaseBus = Bridges[SBridgeIndex].PciBus;
- BaseDevice = Bridges[SBridgeIndex].PciDevice;
- BaseFunction = Bridges[SBridgeIndex].PciFunction;
- BaseIndexFlag = TRUE;
- } else {
- LocalPirqIndex = (UINT8)((LocalPirqIndex + (UINT8)Bridges[SBridgeIndex].PciDevice)%4);
- }
-
- //
- // Check if at device. If not get new PCI location & PIRQ
- //
- if (Bridges[SBridgeIndex].SecondaryBus == (UINT8)LocalBus) {
- //
- // Translate PIRQ
- //
- LocalPirqIndex = (UINT8)((LocalPirqIndex + (UINT8)(LocalDevice)) % 4);
- break;
- }
- }
- }
-
- //
- // In case we fail to find the Bridge just above us, this is some potential error and we want to warn the user
- //
- if (BridgeIndex >= NumberOfBridges) {
- DEBUG ((DEBUG_ERROR, "Cannot Find IRQ Routing for Bus %d, Device %d, Function %d\n", *PciBus, *PciDevice, *PciFunction));
- }
-
- *PirqIndex = LocalPirqIndex;
- *PciBus = BaseBus;
- *PciDevice = BaseDevice;
- *PciFunction = BaseFunction;
-
- return EFI_SUCCESS;
-}
-
-/**
- Copy the $PIR table as required.
-
- @param Private Legacy BIOS Instance data
- @param RoutingTable Pointer to IRQ routing table
- @param RoutingTableEntries IRQ routing table entries
- @param PirqTable Pointer to $PIR table
- @param PirqTableSize Length of table
-
-**/
-VOID
-CopyPirqTable (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN EFI_LEGACY_IRQ_ROUTING_ENTRY *RoutingTable,
- IN UINTN RoutingTableEntries,
- IN EFI_LEGACY_PIRQ_TABLE_HEADER *PirqTable,
- IN UINTN PirqTableSize
- )
-{
- EFI_IA32_REGISTER_SET Regs;
- UINT32 Granularity;
-
- //
- // Copy $PIR table, if it exists.
- //
- if (PirqTable != NULL) {
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
-
- Private->InternalIrqRoutingTable = RoutingTable;
- Private->NumberIrqRoutingEntries = (UINT16)(RoutingTableEntries);
- ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));
-
- Regs.X.AX = Legacy16GetTableAddress;
- Regs.X.CX = (UINT16)PirqTableSize;
- //
- // Allocate at F segment according to PCI IRQ Routing Table Specification
- //
- Regs.X.BX = (UINT16)0x1;
- //
- // 16-byte boundary alignment requirement according to
- // PCI IRQ Routing Table Specification
- //
- Regs.X.DX = 0x10;
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- Private->Legacy16Table->IrqRoutingTablePointer = (UINT32)(Regs.X.DS * 16 + Regs.X.BX);
- if (Regs.X.AX != 0) {
- DEBUG ((DEBUG_ERROR, "PIRQ table length insufficient - %x\n", PirqTableSize));
- } else {
- DEBUG ((DEBUG_INFO, "PIRQ table in legacy region - %x\n", Private->Legacy16Table->IrqRoutingTablePointer));
- Private->Legacy16Table->IrqRoutingTableLength = (UINT32)PirqTableSize;
- CopyMem (
- (VOID *)(UINTN)Private->Legacy16Table->IrqRoutingTablePointer,
- PirqTable,
- PirqTableSize
- );
- }
-
- Private->Cpu->FlushDataCache (Private->Cpu, 0xE0000, 0x20000, EfiCpuFlushTypeWriteBackInvalidate);
- Private->LegacyRegion->Lock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
- }
-
- Private->PciInterruptLine = TRUE;
- mHandleCount = 0;
-}
-
-/**
- Dump EFI_LEGACY_INSTALL_PCI_HANDLER structure information.
-
- @param PciHandle The pointer to EFI_LEGACY_INSTALL_PCI_HANDLER structure
-
-**/
-VOID
-DumpPciHandle (
- IN EFI_LEGACY_INSTALL_PCI_HANDLER *PciHandle
- )
-{
- DEBUG ((DEBUG_INFO, "PciBus - %02x\n", (UINTN)PciHandle->PciBus));
- DEBUG ((DEBUG_INFO, "PciDeviceFun - %02x\n", (UINTN)PciHandle->PciDeviceFun));
- DEBUG ((DEBUG_INFO, "PciSegment - %02x\n", (UINTN)PciHandle->PciSegment));
- DEBUG ((DEBUG_INFO, "PciClass - %02x\n", (UINTN)PciHandle->PciClass));
- DEBUG ((DEBUG_INFO, "PciSubclass - %02x\n", (UINTN)PciHandle->PciSubclass));
- DEBUG ((DEBUG_INFO, "PciInterface - %02x\n", (UINTN)PciHandle->PciInterface));
-
- DEBUG ((DEBUG_INFO, "PrimaryIrq - %02x\n", (UINTN)PciHandle->PrimaryIrq));
- DEBUG ((DEBUG_INFO, "PrimaryReserved - %02x\n", (UINTN)PciHandle->PrimaryReserved));
- DEBUG ((DEBUG_INFO, "PrimaryControl - %04x\n", (UINTN)PciHandle->PrimaryControl));
- DEBUG ((DEBUG_INFO, "PrimaryBase - %04x\n", (UINTN)PciHandle->PrimaryBase));
- DEBUG ((DEBUG_INFO, "PrimaryBusMaster - %04x\n", (UINTN)PciHandle->PrimaryBusMaster));
-
- DEBUG ((DEBUG_INFO, "SecondaryIrq - %02x\n", (UINTN)PciHandle->SecondaryIrq));
- DEBUG ((DEBUG_INFO, "SecondaryReserved - %02x\n", (UINTN)PciHandle->SecondaryReserved));
- DEBUG ((DEBUG_INFO, "SecondaryControl - %04x\n", (UINTN)PciHandle->SecondaryControl));
- DEBUG ((DEBUG_INFO, "SecondaryBase - %04x\n", (UINTN)PciHandle->SecondaryBase));
- DEBUG ((DEBUG_INFO, "SecondaryBusMaster - %04x\n", (UINTN)PciHandle->SecondaryBusMaster));
- return;
-}
-
-/**
- Copy the $PIR table as required.
-
- @param Private Legacy BIOS Instance data
- @param PciIo Pointer to PCI_IO protocol
- @param PciIrq Pci IRQ number
- @param PciConfigHeader Type00 Pci configuration header
-
-**/
-VOID
-InstallLegacyIrqHandler (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN EFI_PCI_IO_PROTOCOL *PciIo,
- IN UINT8 PciIrq,
- IN PCI_TYPE00 *PciConfigHeader
- )
-{
- EFI_IA32_REGISTER_SET Regs;
- UINT16 LegMask;
- UINTN PciSegment;
- UINTN PciBus;
- UINTN PciDevice;
- UINTN PciFunction;
- EFI_LEGACY_8259_PROTOCOL *Legacy8259;
- UINT16 PrimaryMaster;
- UINT16 SecondaryMaster;
- UINTN TempData;
- UINTN RegisterAddress;
- UINT32 Granularity;
-
- PrimaryMaster = 0;
- SecondaryMaster = 0;
- Legacy8259 = Private->Legacy8259;
- //
- // Disable interrupt in PIC, in case shared, to prevent an
- // interrupt from occurring.
- //
- Legacy8259->GetMask (
- Legacy8259,
- &LegMask,
- NULL,
- NULL,
- NULL
- );
-
- LegMask = (UINT16)(LegMask | (UINT16)(1 << PciIrq));
-
- Legacy8259->SetMask (
- Legacy8259,
- &LegMask,
- NULL,
- NULL,
- NULL
- );
-
- PciIo->GetLocation (
- PciIo,
- &PciSegment,
- &PciBus,
- &PciDevice,
- &PciFunction
- );
- Private->IntThunk->PciHandler.PciBus = (UINT8)PciBus;
- Private->IntThunk->PciHandler.PciDeviceFun = (UINT8)((PciDevice << 3) + PciFunction);
- Private->IntThunk->PciHandler.PciSegment = (UINT8)PciSegment;
- Private->IntThunk->PciHandler.PciClass = PciConfigHeader->Hdr.ClassCode[2];
- Private->IntThunk->PciHandler.PciSubclass = PciConfigHeader->Hdr.ClassCode[1];
- Private->IntThunk->PciHandler.PciInterface = PciConfigHeader->Hdr.ClassCode[0];
-
- //
- // Use native mode base address registers in two cases:
- // 1. Programming Interface (PI) register indicates Primary Controller is
- // in native mode OR
- // 2. PCI device Sub Class Code is not IDE
- //
- Private->IntThunk->PciHandler.PrimaryBusMaster = (UINT16)(PciConfigHeader->Device.Bar[4] & 0xfffc);
- if (((PciConfigHeader->Hdr.ClassCode[0] & 0x01) != 0) || (PciConfigHeader->Hdr.ClassCode[1] != PCI_CLASS_MASS_STORAGE_IDE)) {
- Private->IntThunk->PciHandler.PrimaryIrq = PciIrq;
- Private->IntThunk->PciHandler.PrimaryBase = (UINT16)(PciConfigHeader->Device.Bar[0] & 0xfffc);
- Private->IntThunk->PciHandler.PrimaryControl = (UINT16)((PciConfigHeader->Device.Bar[1] & 0xfffc) + 2);
- } else {
- Private->IntThunk->PciHandler.PrimaryIrq = 14;
- Private->IntThunk->PciHandler.PrimaryBase = 0x1f0;
- Private->IntThunk->PciHandler.PrimaryControl = 0x3f6;
- }
-
- //
- // Secondary controller data
- //
- if (Private->IntThunk->PciHandler.PrimaryBusMaster != 0) {
- Private->IntThunk->PciHandler.SecondaryBusMaster = (UINT16)((PciConfigHeader->Device.Bar[4] & 0xfffc) + 8);
- PrimaryMaster = (UINT16)(Private->IntThunk->PciHandler.PrimaryBusMaster + 2);
- SecondaryMaster = (UINT16)(Private->IntThunk->PciHandler.SecondaryBusMaster + 2);
-
- //
- // Clear pending interrupts in Bus Master registers
- //
- IoWrite16 (PrimaryMaster, 0x04);
- IoWrite16 (SecondaryMaster, 0x04);
- }
-
- //
- // Use native mode base address registers in two cases:
- // 1. Programming Interface (PI) register indicates Secondary Controller is
- // in native mode OR
- // 2. PCI device Sub Class Code is not IDE
- //
- if (((PciConfigHeader->Hdr.ClassCode[0] & 0x04) != 0) || (PciConfigHeader->Hdr.ClassCode[1] != PCI_CLASS_MASS_STORAGE_IDE)) {
- Private->IntThunk->PciHandler.SecondaryIrq = PciIrq;
- Private->IntThunk->PciHandler.SecondaryBase = (UINT16)(PciConfigHeader->Device.Bar[2] & 0xfffc);
- Private->IntThunk->PciHandler.SecondaryControl = (UINT16)((PciConfigHeader->Device.Bar[3] & 0xfffc) + 2);
- } else {
- Private->IntThunk->PciHandler.SecondaryIrq = 15;
- Private->IntThunk->PciHandler.SecondaryBase = 0x170;
- Private->IntThunk->PciHandler.SecondaryControl = 0x376;
- }
-
- //
- // Clear pending interrupts in IDE Command Block Status reg before we
- // Thunk to CSM16 below. Don't want a pending Interrupt before we
- // install the handlers as wierd corruption would occur and hang system.
- //
- //
- // Read IDE CMD blk status reg to clear out any pending interrupts.
- // Do here for Primary and Secondary IDE channels
- //
- RegisterAddress = (UINT16)Private->IntThunk->PciHandler.PrimaryBase + 0x07;
- IoRead8 (RegisterAddress);
- RegisterAddress = (UINT16)Private->IntThunk->PciHandler.SecondaryBase + 0x07;
- IoRead8 (RegisterAddress);
-
- Private->IntThunk->PciHandler.PrimaryReserved = 0;
- Private->IntThunk->PciHandler.SecondaryReserved = 0;
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
-
- Regs.X.AX = Legacy16InstallPciHandler;
- TempData = (UINTN)&Private->IntThunk->PciHandler;
- Regs.X.ES = EFI_SEGMENT ((UINT32)TempData);
- Regs.X.BX = EFI_OFFSET ((UINT32)TempData);
-
- DumpPciHandle (&Private->IntThunk->PciHandler);
-
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
-
- Private->Cpu->FlushDataCache (Private->Cpu, 0xE0000, 0x20000, EfiCpuFlushTypeWriteBackInvalidate);
- Private->LegacyRegion->Lock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
-}
-
-/**
- Program the interrupt routing register in all the PCI devices. On a PC AT system
- this register contains the 8259 IRQ vector that matches its PCI interrupt.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS Succeed.
- @retval EFI_ALREADY_STARTED All PCI devices have been processed.
-
-**/
-EFI_STATUS
-PciProgramAllInterruptLineRegisters (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
- EFI_LEGACY_8259_PROTOCOL *Legacy8259;
- EFI_LEGACY_INTERRUPT_PROTOCOL *LegacyInterrupt;
- EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;
- UINT8 InterruptPin;
- UINTN Index;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN MassStorageHandleCount;
- EFI_HANDLE *MassStorageHandleBuffer;
- UINTN MassStorageHandleIndex;
- UINT8 PciIrq;
- UINT16 Command;
- UINTN PciSegment;
- UINTN PciBus;
- UINTN PciDevice;
- UINTN PciFunction;
- EFI_LEGACY_IRQ_ROUTING_ENTRY *RoutingTable;
- UINTN RoutingTableEntries;
- UINT16 LegMask;
- UINT16 LegEdgeLevel;
- PCI_TYPE00 PciConfigHeader;
- EFI_LEGACY_PIRQ_TABLE_HEADER *PirqTable;
- UINTN PirqTableSize;
- UINTN Flags;
- HDD_INFO *HddInfo;
- UINT64 Supports;
-
- //
- // Note - This routine use to return immediately if Private->PciInterruptLine
- // was true. Routine changed since resets etc can cause not all
- // PciIo protocols to be registered the first time through.
- // New algorithm is to do the copy $PIR table on first pass and save
- // HandleCount on first pass. If subsequent passes LocateHandleBuffer gives
- // a larger handle count then proceed with body of function else return
- // EFI_ALREADY_STARTED. In addition check if PCI device InterruptLine != 0.
- // If zero then function unprogrammed else skip function.
- //
- Legacy8259 = Private->Legacy8259;
- LegacyInterrupt = Private->LegacyInterrupt;
- LegacyBiosPlatform = Private->LegacyBiosPlatform;
-
- LegacyBiosPlatform->GetRoutingTable (
- Private->LegacyBiosPlatform,
- (VOID *)&RoutingTable,
- &RoutingTableEntries,
- (VOID *)&PirqTable,
- &PirqTableSize,
- NULL,
- NULL
- );
- CreateBridgeTable (RoutingTable, RoutingTableEntries);
-
- if (!Private->PciInterruptLine) {
- CopyPirqTable (
- Private,
- RoutingTable,
- RoutingTableEntries,
- PirqTable,
- PirqTableSize
- );
- }
-
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return EFI_NOT_FOUND;
- }
-
- if (HandleCount == mHandleCount) {
- FreePool (HandleBuffer);
- return EFI_ALREADY_STARTED;
- }
-
- if (mHandleCount == 0x00) {
- mHandleCount = HandleCount;
- }
-
- for (Index = 0; Index < HandleCount; Index++) {
- //
- // If VGA then only do VGA to allow drives fore time to spin up
- // otherwise assign PCI IRQs to all potential devices.
- //
- if ((mVgaInstallationInProgress) && (HandleBuffer[Index] != mVgaHandle)) {
- continue;
- } else {
- //
- // Force code to go through all handles next time called if video.
- // This will catch case where HandleCount doesn't change but want
- // to get drive info etc.
- //
- mHandleCount = 0x00;
- }
-
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Test whether the device can be enabled or not.
- // If it can't be enabled, then just skip it to avoid further operation.
- //
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
- Command = PciConfigHeader.Hdr.Command;
-
- //
- // Note PciIo->Attributes does not program the PCI command register
- //
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
- );
- if (!EFI_ERROR (Status)) {
- Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationEnable,
- Supports,
- NULL
- );
- }
-
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, 0x04, 1, &Command);
-
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- InterruptPin = PciConfigHeader.Device.InterruptPin;
-
- if ((InterruptPin != 0) && (PciConfigHeader.Device.InterruptLine == PCI_INT_LINE_UNKNOWN)) {
- PciIo->GetLocation (
- PciIo,
- &PciSegment,
- &PciBus,
- &PciDevice,
- &PciFunction
- );
- //
- // Translate PIRQ index back thru busses to slot bus with InterruptPin
- // zero based
- //
- InterruptPin -= 1;
-
- Status = GetBaseBus (
- Private,
- PciBus,
- PciDevice,
- RoutingTable,
- RoutingTableEntries
- );
-
- if (Status == EFI_NOT_FOUND) {
- TranslateBusPirq (
- Private,
- &PciBus,
- &PciDevice,
- &PciFunction,
- &InterruptPin
- );
- }
-
- //
- // Translate InterruptPin(0-3) into PIRQ
- //
- Status = LegacyBiosPlatform->TranslatePirq (
- LegacyBiosPlatform,
- PciBus,
- (PciDevice << 3),
- PciFunction,
- &InterruptPin,
- &PciIrq
- );
- //
- // TranslatePirq() should never fail or we are in trouble
- // If it does return failure status, check your PIRQ routing table to see if some item is missing or incorrect
- //
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "Translate Pirq Failed - Status = %r\n ", Status));
- continue;
- }
-
- LegacyInterrupt->WritePirq (
- LegacyInterrupt,
- InterruptPin,
- PciIrq
- );
-
- //
- // Check if device has an OPROM associated with it.
- // If not invoke special 16-bit function, to allow 16-bit
- // code to install an interrupt handler.
- //
- Status = LegacyBiosCheckPciRom (
- &Private->LegacyBios,
- HandleBuffer[Index],
- NULL,
- NULL,
- &Flags
- );
- if ((EFI_ERROR (Status)) && (PciConfigHeader.Hdr.ClassCode[2] == PCI_CLASS_MASS_STORAGE)) {
- //
- // Device has no OPROM associated with it and is a mass storage
- // device. It needs to have an PCI IRQ handler installed. To
- // correctly install the handler we need to insure device is
- // connected. The device may just have register itself but not
- // been connected. Re-read PCI config space after as it can
- // change
- //
- //
- // Get IDE Handle. If matches handle then skip ConnectController
- // since ConnectController may force native mode and we don't
- // want that for primary IDE controller
- //
- MassStorageHandleCount = 0;
- MassStorageHandleBuffer = NULL;
- LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformIdeHandle,
- 0,
- &MassStorageHandleBuffer,
- &MassStorageHandleCount,
- NULL
- );
-
- HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];
-
- LegacyBiosBuildIdeData (Private, &HddInfo, 0);
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
-
- for (MassStorageHandleIndex = 0; MassStorageHandleIndex < MassStorageHandleCount; MassStorageHandleIndex++) {
- if (MassStorageHandleBuffer[MassStorageHandleIndex] == HandleBuffer[Index]) {
- //
- // InstallLegacyIrqHandler according to Platform requirement
- //
- InstallLegacyIrqHandler (
- Private,
- PciIo,
- PciIrq,
- &PciConfigHeader
- );
- break;
- }
- }
- }
-
- //
- // Write InterruptPin and enable 8259.
- //
- PciIo->Pci.Write (
- PciIo,
- EfiPciIoWidthUint8,
- 0x3c,
- 1,
- &PciIrq
- );
- Private->IntThunk->EfiToLegacy16BootTable.PciIrqMask = (UINT16)(Private->IntThunk->EfiToLegacy16BootTable.PciIrqMask | (UINT16)(1 << PciIrq));
-
- Legacy8259->GetMask (
- Legacy8259,
- &LegMask,
- &LegEdgeLevel,
- NULL,
- NULL
- );
-
- LegMask = (UINT16)(LegMask & (UINT16) ~(1 << PciIrq));
- LegEdgeLevel = (UINT16)(LegEdgeLevel | (UINT16)(1 << PciIrq));
- Legacy8259->SetMask (
- Legacy8259,
- &LegMask,
- &LegEdgeLevel,
- NULL,
- NULL
- );
- }
- }
-
- FreePool (HandleBuffer);
- return EFI_SUCCESS;
-}
-
-/**
- Find & verify PnP Expansion header in ROM image
-
- @param Private Protocol instance pointer.
- @param FirstHeader 1 = Find first header, 0 = Find successive headers
- @param PnpPtr Input Rom start if FirstHeader =1, Current Header
- otherwise Output Next header, if it exists
-
- @retval EFI_SUCCESS Next Header found at BasePnpPtr
- @retval EFI_NOT_FOUND No more headers
-
-**/
-EFI_STATUS
-FindNextPnpExpansionHeader (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN BOOLEAN FirstHeader,
- IN OUT LEGACY_PNP_EXPANSION_HEADER **PnpPtr
-
- )
-{
- UINTN TempData;
- LEGACY_PNP_EXPANSION_HEADER *LocalPnpPtr;
-
- LocalPnpPtr = *PnpPtr;
- if (FirstHeader == FIRST_INSTANCE) {
- mBasePnpPtr = LocalPnpPtr;
- mBbsRomSegment = (UINT16)((UINTN)mBasePnpPtr >> 4);
- //
- // Offset 0x1a gives offset to PnP expansion header for the first
- // instance, there after the structure gives the offset to the next
- // structure
- //
- LocalPnpPtr = (LEGACY_PNP_EXPANSION_HEADER *)((UINT8 *)LocalPnpPtr + 0x1a);
- TempData = (*((UINT16 *)LocalPnpPtr));
- } else {
- TempData = (UINT16)LocalPnpPtr->NextHeader;
- }
-
- LocalPnpPtr = (LEGACY_PNP_EXPANSION_HEADER *)(((UINT8 *)mBasePnpPtr + TempData));
-
- //
- // Search for PnP table in Shadowed ROM
- //
- *PnpPtr = LocalPnpPtr;
- if (*(UINT32 *)LocalPnpPtr == SIGNATURE_32 ('$', 'P', 'n', 'P')) {
- return EFI_SUCCESS;
- } else {
- return EFI_NOT_FOUND;
- }
-}
-
-/**
- Update list of Bev or BCV table entries.
-
- @param Private Protocol instance pointer.
- @param RomStart Table of ROM start address in RAM/ROM. PciIo _
- Handle to PCI IO for this device
- @param PciIo Instance of PCI I/O Protocol
-
- @retval EFI_SUCCESS Always should succeed.
-
-**/
-EFI_STATUS
-UpdateBevBcvTable (
- IN LEGACY_BIOS_INSTANCE *Private,
- IN EFI_LEGACY_EXPANSION_ROM_HEADER *RomStart,
- IN EFI_PCI_IO_PROTOCOL *PciIo
- )
-{
- VOID *RomEnd;
- BBS_TABLE *BbsTable;
- UINTN BbsIndex;
- EFI_LEGACY_EXPANSION_ROM_HEADER *PciPtr;
- LEGACY_PNP_EXPANSION_HEADER *PnpPtr;
- BOOLEAN Instance;
- EFI_STATUS Status;
- UINTN Segment;
- UINTN Bus;
- UINTN Device;
- UINTN Function;
- UINT8 Class;
- UINT16 DeviceType;
-
- Segment = 0;
- Bus = 0;
- Device = 0;
- Function = 0;
- Class = 0;
- DeviceType = BBS_UNKNOWN;
-
- //
- // Skip floppy and 2*onboard IDE controller entries(Master/Slave per
- // controller).
- //
- BbsIndex = Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries;
-
- BbsTable = (BBS_TABLE *)(UINTN)Private->IntThunk->EfiToLegacy16BootTable.BbsTable;
- PnpPtr = (LEGACY_PNP_EXPANSION_HEADER *)RomStart;
- PciPtr = (EFI_LEGACY_EXPANSION_ROM_HEADER *)RomStart;
-
- RomEnd = (VOID *)(PciPtr->Size512 * 512 + (UINTN)PciPtr);
- Instance = FIRST_INSTANCE;
- //
- // OPROMs like PXE may not be tied to a piece of hardware and thus
- // don't have a PciIo associated with them
- //
- if (PciIo != NULL) {
- PciIo->GetLocation (
- PciIo,
- &Segment,
- &Bus,
- &Device,
- &Function
- );
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint8,
- 0x0b,
- 1,
- &Class
- );
-
- if (Class == PCI_CLASS_MASS_STORAGE) {
- DeviceType = BBS_HARDDISK;
- } else {
- if (Class == PCI_CLASS_NETWORK) {
- DeviceType = BBS_EMBED_NETWORK;
- }
- }
- }
-
- while (TRUE) {
- Status = FindNextPnpExpansionHeader (Private, Instance, &PnpPtr);
- Instance = NOT_FIRST_INSTANCE;
- if (EFI_ERROR (Status)) {
- break;
- }
-
- //
- // There can be additional $PnP headers within the OPROM.
- // Example: SCSI can have one per drive.
- //
- BbsTable[BbsIndex].BootPriority = BBS_UNPRIORITIZED_ENTRY;
- BbsTable[BbsIndex].DeviceType = DeviceType;
- BbsTable[BbsIndex].Bus = (UINT32)Bus;
- BbsTable[BbsIndex].Device = (UINT32)Device;
- BbsTable[BbsIndex].Function = (UINT32)Function;
- BbsTable[BbsIndex].StatusFlags.OldPosition = 0;
- BbsTable[BbsIndex].StatusFlags.Reserved1 = 0;
- BbsTable[BbsIndex].StatusFlags.Enabled = 0;
- BbsTable[BbsIndex].StatusFlags.Failed = 0;
- BbsTable[BbsIndex].StatusFlags.MediaPresent = 0;
- BbsTable[BbsIndex].StatusFlags.Reserved2 = 0;
- BbsTable[BbsIndex].Class = PnpPtr->Class;
- BbsTable[BbsIndex].SubClass = PnpPtr->SubClass;
- BbsTable[BbsIndex].DescStringOffset = PnpPtr->ProductNamePointer;
- BbsTable[BbsIndex].DescStringSegment = mBbsRomSegment;
- BbsTable[BbsIndex].MfgStringOffset = PnpPtr->MfgPointer;
- BbsTable[BbsIndex].MfgStringSegment = mBbsRomSegment;
- BbsTable[BbsIndex].BootHandlerSegment = mBbsRomSegment;
-
- //
- // Have seen case where PXE base code have PnP expansion ROM
- // header but no Bcv or Bev vectors.
- //
- if (PnpPtr->Bcv != 0) {
- BbsTable[BbsIndex].BootHandlerOffset = PnpPtr->Bcv;
- ++BbsIndex;
- }
-
- if (PnpPtr->Bev != 0) {
- BbsTable[BbsIndex].BootHandlerOffset = PnpPtr->Bev;
- BbsTable[BbsIndex].DeviceType = BBS_BEV_DEVICE;
- ++BbsIndex;
- }
-
- if ((PnpPtr == (LEGACY_PNP_EXPANSION_HEADER *)PciPtr) || (PnpPtr > (LEGACY_PNP_EXPANSION_HEADER *)RomEnd)) {
- break;
- }
- }
-
- BbsTable[BbsIndex].BootPriority = BBS_IGNORE_ENTRY;
- Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries = (UINT32)BbsIndex;
- return EFI_SUCCESS;
-}
-
-/**
- Shadow all the PCI legacy ROMs. Use data from the Legacy BIOS Protocol
- to chose the order. Skip any devices that have already have legacy
- BIOS run.
-
- @param Private Protocol instance pointer.
-
- @retval EFI_SUCCESS Succeed.
- @retval EFI_UNSUPPORTED Cannot get VGA device handle.
-
-**/
-EFI_STATUS
-PciShadowRoms (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE00 Pci;
- UINTN Index;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- EFI_HANDLE VgaHandle;
- EFI_HANDLE FirstHandle;
- VOID **RomStart;
- UINTN Flags;
- PCI_TYPE00 PciConfigHeader;
- UINT16 *Command;
- UINT64 Supports;
-
- //
- // Make the VGA device first
- //
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformVgaHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
- if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
- }
-
- VgaHandle = HandleBuffer[0];
-
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Place the VGA handle as first.
- //
- for (Index = 0; Index < HandleCount; Index++) {
- if (HandleBuffer[Index] == VgaHandle) {
- FirstHandle = HandleBuffer[0];
- HandleBuffer[0] = HandleBuffer[Index];
- HandleBuffer[Index] = FirstHandle;
- break;
- }
- }
-
- //
- // Allocate memory to save Command WORD from each device. We do this
- // to restore devices to same state as EFI after switching to legacy.
- //
- Command = (UINT16 *)AllocatePool (
- sizeof (UINT16) * (HandleCount + 1)
- );
- if (NULL == Command) {
- FreePool (HandleBuffer);
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // Disconnect all EFI devices first. This covers cases where alegacy BIOS
- // may control multiple PCI devices.
- //
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Save command register for "connect" loop
- //
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
- Command[Index] = PciConfigHeader.Hdr.Command;
- //
- // Skip any device that already has a legacy ROM run
- //
- Status = IsLegacyRom (HandleBuffer[Index]);
- if (!EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // Stop EFI Drivers with oprom.
- //
- gBS->DisconnectController (
- HandleBuffer[Index],
- NULL,
- NULL
- );
- }
-
- //
- // For every device that has not had a legacy ROM started. Start a legacy ROM.
- //
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
-
- ASSERT_EFI_ERROR (Status);
-
- //
- // Here make sure if one VGA have been shadowed,
- // then wil not shadowed another one.
- //
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (Pci) / sizeof (UINT32),
- &Pci
- );
-
- //
- // Only one Video OPROM can be given control in BIOS phase. If there are multiple Video devices,
- // one will work in legacy mode (OPROM will be given control) and
- // other Video devices will work in native mode (OS driver will handle these devices).
- //
- if (IS_PCI_DISPLAY (&Pci) && (Index != 0)) {
- continue;
- }
-
- //
- // Skip any device that already has a legacy ROM run
- //
- Status = IsLegacyRom (HandleBuffer[Index]);
- if (!EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // If legacy VBIOS Oprom has not been dispatched before, install legacy VBIOS here.
- //
- if (IS_PCI_DISPLAY (&Pci) && (Index == 0)) {
- Status = LegacyBiosInstallVgaRom (Private);
- //
- // A return status of EFI_NOT_FOUND is considered valid (No EFI
- // driver is controlling video).
- //
- ASSERT ((Status == EFI_SUCCESS) || (Status == EFI_NOT_FOUND));
- continue;
- }
-
- //
- // Install legacy ROM
- //
- Status = LegacyBiosInstallPciRom (
- &Private->LegacyBios,
- HandleBuffer[Index],
- NULL,
- &Flags,
- NULL,
- NULL,
- (VOID **)&RomStart,
- NULL
- );
- if (EFI_ERROR (Status)) {
- if (!((Status == EFI_UNSUPPORTED) && (Flags == NO_ROM))) {
- continue;
- }
- }
-
- //
- // Restore Command register so legacy has same devices enabled or disabled
- // as EFI.
- // If Flags = NO_ROM use command register as is. This covers the
- // following cases:
- // Device has no ROMs associated with it.
- // Device has ROM associated with it but was already
- // installed.
- // = ROM_FOUND but not VALID_LEGACY_ROM, disable it.
- // = ROM_FOUND and VALID_LEGACY_ROM, enable it.
- //
- if ((Flags & ROM_FOUND) == ROM_FOUND) {
- if ((Flags & VALID_LEGACY_ROM) == 0) {
- Command[Index] = 0;
- } else {
- //
- // For several VGAs, only one of them can be enabled.
- //
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
- );
- if (!EFI_ERROR (Status)) {
- Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationEnable,
- Supports,
- NULL
- );
- }
-
- if (!EFI_ERROR (Status)) {
- Command[Index] = 0x1f;
- }
- }
- }
-
- PciIo->Pci.Write (
- PciIo,
- EfiPciIoWidthUint16,
- 0x04,
- 1,
- &Command[Index]
- );
- }
-
- FreePool (Command);
- FreePool (HandleBuffer);
- return EFI_SUCCESS;
-}
-
-/**
- Test to see if a legacy PCI ROM exists for this device. Optionally return
- the Legacy ROM instance for this PCI device.
-
- @param This Protocol instance pointer.
- @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will
- be loaded
- @param RomImage Return the legacy PCI ROM for this device
- @param RomSize Size of ROM Image
- @param Flags Indicates if ROM found and if PC-AT.
-
- @retval EFI_SUCCESS Legacy Option ROM available for this device
- @retval EFI_UNSUPPORTED Legacy Option ROM not supported.
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosCheckPciRom (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_HANDLE PciHandle,
- OUT VOID **RomImage OPTIONAL,
- OUT UINTN *RomSize OPTIONAL,
- OUT UINTN *Flags
- )
-{
- return LegacyBiosCheckPciRomEx (
- This,
- PciHandle,
- RomImage,
- RomSize,
- NULL,
- Flags,
- NULL,
- NULL
- );
-}
-
-/**
-
- Routine Description:
- Test to see if a legacy PCI ROM exists for this device. Optionally return
- the Legacy ROM instance for this PCI device.
-
- @param[in] This Protocol instance pointer.
- @param[in] PciHandle The PCI PC-AT OPROM from this devices ROM BAR will be loaded
- @param[out] RomImage Return the legacy PCI ROM for this device
- @param[out] RomSize Size of ROM Image
- @param[out] RuntimeImageLength Runtime size of ROM Image
- @param[out] Flags Indicates if ROM found and if PC-AT.
- @param[out] OpromRevision Revision of the PCI Rom
- @param[out] ConfigUtilityCodeHeaderPointer of Configuration Utility Code Header
-
- @return EFI_SUCCESS Legacy Option ROM available for this device
- @return EFI_ALREADY_STARTED This device is already managed by its Oprom
- @return EFI_UNSUPPORTED Legacy Option ROM not supported.
-
-**/
-EFI_STATUS
-LegacyBiosCheckPciRomEx (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_HANDLE PciHandle,
- OUT VOID **RomImage OPTIONAL,
- OUT UINTN *RomSize OPTIONAL,
- OUT UINTN *RuntimeImageLength OPTIONAL,
- OUT UINTN *Flags OPTIONAL,
- OUT UINT8 *OpromRevision OPTIONAL,
- OUT VOID **ConfigUtilityCodeHeader OPTIONAL
- )
-{
- EFI_STATUS Status;
- LEGACY_BIOS_INSTANCE *Private;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINTN LocalRomSize;
- VOID *LocalRomImage;
- PCI_TYPE00 PciConfigHeader;
- VOID *LocalConfigUtilityCodeHeader;
-
- LocalConfigUtilityCodeHeader = NULL;
- *Flags = NO_ROM;
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // See if the option ROM for PciHandle has already been executed
- //
- Status = IsLegacyRom (PciHandle);
- if (!EFI_ERROR (Status)) {
- *Flags |= (UINTN)(ROM_FOUND | VALID_LEGACY_ROM);
- return EFI_SUCCESS;
- }
-
- //
- // Check for PCI ROM Bar
- //
- LocalRomSize = (UINTN)PciIo->RomSize;
- LocalRomImage = PciIo->RomImage;
- if (LocalRomSize != 0) {
- *Flags |= ROM_FOUND;
- }
-
- //
- // PCI specification states you should check VendorId and Device Id.
- //
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- Status = GetPciLegacyRom (
- Private->Csm16PciInterfaceVersion,
- PciConfigHeader.Hdr.VendorId,
- PciConfigHeader.Hdr.DeviceId,
- &LocalRomImage,
- &LocalRomSize,
- RuntimeImageLength,
- OpromRevision,
- &LocalConfigUtilityCodeHeader
- );
- if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
- }
-
- *Flags |= VALID_LEGACY_ROM;
-
- //
- // See if Configuration Utility Code Header valid
- //
- if (LocalConfigUtilityCodeHeader != NULL) {
- *Flags |= ROM_WITH_CONFIG;
- }
-
- if (ConfigUtilityCodeHeader != NULL) {
- *ConfigUtilityCodeHeader = LocalConfigUtilityCodeHeader;
- }
-
- if (RomImage != NULL) {
- *RomImage = LocalRomImage;
- }
-
- if (RomSize != NULL) {
- *RomSize = LocalRomSize;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Load a legacy PC-AT OPROM on the PciHandle device. Return information
- about how many disks were added by the OPROM and the shadow address and
- size. DiskStart & DiskEnd are INT 13h drive letters. Thus 0x80 is C:
-
- @retval EFI_SUCCESS Legacy ROM loaded for this device
- @retval EFI_NOT_FOUND No PS2 Keyboard found
-
-**/
-EFI_STATUS
-EnablePs2Keyboard (
- VOID
- )
-{
- EFI_STATUS Status;
- EFI_HANDLE *HandleBuffer;
- UINTN HandleCount;
- EFI_ISA_IO_PROTOCOL *IsaIo;
- UINTN Index;
-
- //
- // Get SimpleTextIn and find PS2 controller
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiSimpleTextInProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return EFI_NOT_FOUND;
- }
-
- for (Index = 0; Index < HandleCount; Index++) {
- //
- // Open the IO Abstraction(s) needed to perform the supported test
- //
- Status = gBS->OpenProtocol (
- HandleBuffer[Index],
- &gEfiIsaIoProtocolGuid,
- (VOID **)&IsaIo,
- NULL,
- HandleBuffer[Index],
- EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL
- );
-
- if (!EFI_ERROR (Status)) {
- //
- // Use the ISA I/O Protocol to see if Controller is the Keyboard
- // controller
- //
- if ((IsaIo->ResourceList->Device.HID != EISA_PNP_ID (0x303)) || (IsaIo->ResourceList->Device.UID != 0)) {
- Status = EFI_UNSUPPORTED;
- }
-
- gBS->CloseProtocol (
- HandleBuffer[Index],
- &gEfiIsaIoProtocolGuid,
- NULL,
- HandleBuffer[Index]
- );
- }
-
- if (!EFI_ERROR (Status)) {
- gBS->ConnectController (HandleBuffer[Index], NULL, NULL, FALSE);
- }
- }
-
- FreePool (HandleBuffer);
- return EFI_SUCCESS;
-}
-
-/**
- Load a legacy PC-AT OpROM for VGA controller.
-
- @param Private Driver private data.
-
- @retval EFI_SUCCESS Legacy ROM successfully installed for this device.
- @retval EFI_DEVICE_ERROR No VGA device handle found, or native EFI video
- driver cannot be successfully disconnected, or VGA
- thunk driver cannot be successfully connected.
-
-**/
-EFI_STATUS
-LegacyBiosInstallVgaRom (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- EFI_HANDLE VgaHandle;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- EFI_HANDLE *ConnectHandleBuffer;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE00 PciConfigHeader;
- UINT64 Supports;
- EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;
- UINTN EntryCount;
- UINTN Index;
- VOID *Interface;
-
- //
- // EfiLegacyBiosGuild attached to a device implies that there is a legacy
- // BIOS associated with that device.
- //
- // There are 3 cases to consider.
- // Case 1: No EFI driver is controlling the video.
- // Action: Return EFI_SUCCESS from DisconnectController, search
- // video thunk driver, and connect it.
- // Case 2: EFI driver is controlling the video and EfiLegacyBiosGuid is
- // not on the image handle.
- // Action: Disconnect EFI driver.
- // ConnectController for video thunk
- // Case 3: EFI driver is controlling the video and EfiLegacyBiosGuid is
- // on the image handle.
- // Action: Do nothing and set Private->VgaInstalled = TRUE.
- // Then this routine is not called any more.
- //
- //
- // Get the VGA device.
- //
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformVgaHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
- if (EFI_ERROR (Status)) {
- return EFI_DEVICE_ERROR;
- }
-
- VgaHandle = HandleBuffer[0];
-
- //
- // Check whether video thunk driver already starts.
- //
- Status = gBS->OpenProtocolInformation (
- VgaHandle,
- &gEfiPciIoProtocolGuid,
- &OpenInfoBuffer,
- &EntryCount
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- for (Index = 0; Index < EntryCount; Index++) {
- if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) != 0) {
- Status = gBS->HandleProtocol (
- OpenInfoBuffer[Index].AgentHandle,
- &gEfiLegacyBiosGuid,
- (VOID **)&Interface
- );
- if (!EFI_ERROR (Status)) {
- //
- // This should be video thunk driver which is managing video device
- // So it need not start again
- //
- DEBUG ((DEBUG_INFO, "Video thunk driver already start! Return!\n"));
- Private->VgaInstalled = TRUE;
- return EFI_SUCCESS;
- }
- }
- }
-
- //
- // Kick off the native EFI driver
- //
- Status = gBS->DisconnectController (
- VgaHandle,
- NULL,
- NULL
- );
- if (EFI_ERROR (Status)) {
- if (Status != EFI_NOT_FOUND) {
- return EFI_DEVICE_ERROR;
- } else {
- return Status;
- }
- }
-
- //
- // Find all the Thunk Driver
- //
- HandleBuffer = NULL;
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiLegacyBiosGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- ASSERT_EFI_ERROR (Status);
- ConnectHandleBuffer = (EFI_HANDLE *)AllocatePool (sizeof (EFI_HANDLE) * (HandleCount + 1));
- ASSERT (ConnectHandleBuffer != NULL);
-
- CopyMem (
- ConnectHandleBuffer,
- HandleBuffer,
- sizeof (EFI_HANDLE) * HandleCount
- );
- ConnectHandleBuffer[HandleCount] = NULL;
-
- FreePool (HandleBuffer);
-
- //
- // Enable the device and make sure VGA cycles are being forwarded to this VGA device
- //
- Status = gBS->HandleProtocol (
- VgaHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- ASSERT_EFI_ERROR (Status);
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
-
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationSupported,
- 0,
- &Supports
- );
- if (!EFI_ERROR (Status)) {
- Supports &= (UINT64)(EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | \
- EFI_PCI_IO_ATTRIBUTE_VGA_IO | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16);
- Status = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationEnable,
- Supports,
- NULL
- );
- }
-
- if (Status == EFI_SUCCESS) {
- Private->VgaInstalled = TRUE;
-
- //
- // Attach the VGA thunk driver.
- // Assume the video is installed. This prevents potential of infinite recursion.
- //
- Status = gBS->ConnectController (
- VgaHandle,
- ConnectHandleBuffer,
- NULL,
- TRUE
- );
- }
-
- FreePool (ConnectHandleBuffer);
-
- if (EFI_ERROR (Status)) {
- Private->VgaInstalled = FALSE;
-
- //
- // Reconnect the EFI VGA driver.
- //
- gBS->ConnectController (VgaHandle, NULL, NULL, TRUE);
- return EFI_DEVICE_ERROR;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Load a legacy PC-AT OpROM.
-
- @param This Protocol instance pointer.
- @param Private Driver's private data.
- @param PciHandle The EFI handle for the PCI device. It could be
- NULL if the OpROM image is not associated with
- any device.
- @param OpromRevision The revision of PCI PC-AT ROM image.
- @param RomImage Pointer to PCI PC-AT ROM image header. It must not
- be NULL.
- @param ImageSize Size of the PCI PC-AT ROM image.
- @param RuntimeImageLength On input is the max runtime image length indicated by the PCIR structure
- On output is the actual runtime image length
- @param DiskStart Disk number of first device hooked by the ROM. If
- DiskStart is the same as DiskEnd no disked were
- hooked.
- @param DiskEnd Disk number of the last device hooked by the ROM.
- @param RomShadowAddress Shadow address of PC-AT ROM
-
- @retval EFI_SUCCESS Legacy ROM loaded for this device
- @retval EFI_OUT_OF_RESOURCES No more space for this ROM
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosInstallRom (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN LEGACY_BIOS_INSTANCE *Private,
- IN EFI_HANDLE PciHandle,
- IN UINT8 OpromRevision,
- IN VOID *RomImage,
- IN UINTN ImageSize,
- IN OUT UINTN *RuntimeImageLength,
- OUT UINT8 *DiskStart OPTIONAL,
- OUT UINT8 *DiskEnd OPTIONAL,
- OUT VOID **RomShadowAddress OPTIONAL
- )
-{
- EFI_STATUS Status;
- EFI_STATUS PciEnableStatus;
- EFI_PCI_IO_PROTOCOL *PciIo;
- UINT8 LocalDiskStart;
- UINT8 LocalDiskEnd;
- UINTN Segment;
- UINTN Bus;
- UINTN Device;
- UINTN Function;
- EFI_IA32_REGISTER_SET Regs;
- UINT8 VideoMode;
- UINT8 OldVideoMode;
- EFI_TIME BootTime;
- UINT32 *BdaPtr;
- UINT32 LocalTime;
- UINT32 StartBbsIndex;
- UINT32 EndBbsIndex;
- UINT32 MaxRomAddr;
- UINTN TempData;
- UINTN InitAddress;
- UINTN RuntimeAddress;
- EFI_PHYSICAL_ADDRESS PhysicalAddress;
- UINT32 Granularity;
-
- PciIo = NULL;
- LocalDiskStart = 0;
- LocalDiskEnd = 0;
- Segment = 0;
- Bus = 0;
- Device = 0;
- Function = 0;
- VideoMode = 0;
- OldVideoMode = 0;
- PhysicalAddress = 0;
- MaxRomAddr = PcdGet32 (PcdEndOpromShadowAddress);
-
- if ((Private->Legacy16Table->TableLength >= OFFSET_OF (EFI_COMPATIBILITY16_TABLE, HiPermanentMemoryAddress)) &&
- (Private->Legacy16Table->UmaAddress != 0) &&
- (Private->Legacy16Table->UmaSize != 0) &&
- (MaxRomAddr > (Private->Legacy16Table->UmaAddress)))
- {
- MaxRomAddr = Private->Legacy16Table->UmaAddress;
- }
-
- PciProgramAllInterruptLineRegisters (Private);
-
- if ((OpromRevision >= 3) && (Private->Csm16PciInterfaceVersion >= 0x0300)) {
- //
- // CSM16 3.0 meets PCI 3.0 OpROM
- // first test if there is enough space for its INIT code
- //
- PhysicalAddress = CONVENTIONAL_MEMORY_TOP;
- Status = gBS->AllocatePages (
- AllocateMaxAddress,
- EfiBootServicesCode,
- EFI_SIZE_TO_PAGES (ImageSize),
- &PhysicalAddress
- );
-
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "return LegacyBiosInstallRom(%d): EFI_OUT_OF_RESOURCES (no more space for OpROM)\n", DEBUG_LINE_NUMBER));
- //
- // Report Status Code to indicate that there is no enough space for OpROM
- //
- REPORT_STATUS_CODE (
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_EC_LEGACY_OPROM_NO_SPACE)
- );
- return EFI_OUT_OF_RESOURCES;
- }
-
- InitAddress = (UINTN)PhysicalAddress;
- //
- // then test if there is enough space for its RT code
- //
- RuntimeAddress = Private->OptionRom;
- if (RuntimeAddress + *RuntimeImageLength > MaxRomAddr) {
- DEBUG ((DEBUG_ERROR, "return LegacyBiosInstallRom(%d): EFI_OUT_OF_RESOURCES (no more space for OpROM)\n", DEBUG_LINE_NUMBER));
- gBS->FreePages (PhysicalAddress, EFI_SIZE_TO_PAGES (ImageSize));
- //
- // Report Status Code to indicate that there is no enough space for OpROM
- //
- REPORT_STATUS_CODE (
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_EC_LEGACY_OPROM_NO_SPACE)
- );
- return EFI_OUT_OF_RESOURCES;
- }
- } else {
- // CSM16 3.0 meets PCI 2.x OpROM
- // CSM16 2.x meets PCI 2.x/3.0 OpROM
- // test if there is enough space for its INIT code
- //
- InitAddress = PCI_START_ADDRESS (Private->OptionRom);
- if (InitAddress + ImageSize > MaxRomAddr) {
- DEBUG ((DEBUG_ERROR, "return LegacyBiosInstallRom(%d): EFI_OUT_OF_RESOURCES (no more space for OpROM)\n", DEBUG_LINE_NUMBER));
- //
- // Report Status Code to indicate that there is no enough space for OpROM
- //
- REPORT_STATUS_CODE (
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_EC_LEGACY_OPROM_NO_SPACE)
- );
- return EFI_OUT_OF_RESOURCES;
- }
-
- RuntimeAddress = InitAddress;
- }
-
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
-
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- (UINT32)RuntimeAddress,
- (UINT32)ImageSize,
- &Granularity
- );
-
- DEBUG ((DEBUG_INFO, " Shadowing OpROM init/runtime/isize = %x/%x/%x\n", InitAddress, RuntimeAddress, ImageSize));
-
- CopyMem ((VOID *)InitAddress, RomImage, ImageSize);
-
- //
- // Read the highest disk number "installed: and assume a new disk will
- // show up on the first drive past the current value.
- // There are several considerations here:
- // 1. Non-BBS compliant drives will change 40:75 but 16-bit CSM will undo
- // the change until boot selection time frame.
- // 2. BBS compliants drives will not change 40:75 until boot time.
- // 3. Onboard IDE controllers will change 40:75
- //
- ACCESS_PAGE0_CODE (
- LocalDiskStart = (UINT8)((*(UINT8 *)((UINTN)0x475)) + 0x80);
- if ((Private->Disk4075 + 0x80) < LocalDiskStart) {
- //
- // Update table since onboard IDE drives found
- //
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciSegment = 0xff;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciBus = 0xff;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciDevice = 0xff;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciFunction = 0xff;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].StartDriveNumber = (UINT8)(Private->Disk4075 + 0x80);
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].EndDriveNumber = LocalDiskStart;
- Private->LegacyEfiHddTableIndex++;
- Private->Disk4075 = (UINT8)(LocalDiskStart & 0x7f);
- Private->DiskEnd = LocalDiskStart;
- }
-
- if (PciHandle != mVgaHandle) {
- EnablePs2Keyboard ();
-
- //
- // Store current mode settings since PrepareToScanRom may change mode.
- //
- VideoMode = *(UINT8 *)((UINTN)(0x400 + BDA_VIDEO_MODE));
- }
-
- );
-
- //
- // Notify the platform that we are about to scan the ROM
- //
- Status = Private->LegacyBiosPlatform->PlatformHooks (
- Private->LegacyBiosPlatform,
- EfiPlatformHookPrepareToScanRom,
- 0,
- PciHandle,
- &InitAddress,
- NULL,
- NULL
- );
-
- //
- // If Status returned is EFI_UNSUPPORTED then abort due to platform
- // policy.
- //
- if (Status == EFI_UNSUPPORTED) {
- goto Done;
- }
-
- //
- // Report corresponding status code
- //
- REPORT_STATUS_CODE (
- EFI_PROGRESS_CODE,
- (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_CSM_LEGACY_ROM_INIT)
- );
-
- //
- // Generate number of ticks since midnight for BDA. Some OPROMs require
- // this. Place result in 40:6C-6F
- //
- gRT->GetTime (&BootTime, NULL);
- LocalTime = BootTime.Hour * 3600 + BootTime.Minute * 60 + BootTime.Second;
-
- //
- // Multiply result by 18.2 for number of ticks since midnight.
- // Use 182/10 to avoid floating point math.
- //
- ACCESS_PAGE0_CODE (
- LocalTime = (LocalTime * 182) / 10;
- BdaPtr = (UINT32 *)((UINTN)0x46C);
- *BdaPtr = LocalTime;
- );
-
- //
- // Pass in handoff data
- //
- PciEnableStatus = EFI_UNSUPPORTED;
- ZeroMem (&Regs, sizeof (Regs));
- if (PciHandle != NULL) {
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Enable command register.
- //
- PciEnableStatus = PciIo->Attributes (
- PciIo,
- EfiPciIoAttributeOperationEnable,
- EFI_PCI_DEVICE_ENABLE,
- NULL
- );
-
- PciIo->GetLocation (
- PciIo,
- &Segment,
- &Bus,
- &Device,
- &Function
- );
- DEBUG ((DEBUG_INFO, "Shadowing OpROM on the PCI device %x/%x/%x\n", Bus, Device, Function));
- }
-
- mIgnoreBbsUpdateFlag = FALSE;
- Regs.X.AX = Legacy16DispatchOprom;
-
- //
- // Generate DispatchOpRomTable data
- //
- Private->IntThunk->DispatchOpromTable.PnPInstallationCheckSegment = Private->Legacy16Table->PnPInstallationCheckSegment;
- Private->IntThunk->DispatchOpromTable.PnPInstallationCheckOffset = Private->Legacy16Table->PnPInstallationCheckOffset;
- Private->IntThunk->DispatchOpromTable.OpromSegment = (UINT16)(InitAddress >> 4);
- Private->IntThunk->DispatchOpromTable.PciBus = (UINT8)Bus;
- Private->IntThunk->DispatchOpromTable.PciDeviceFunction = (UINT8)((Device << 3) | Function);
- Private->IntThunk->DispatchOpromTable.NumberBbsEntries = (UINT8)Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries;
- Private->IntThunk->DispatchOpromTable.BbsTablePointer = (UINT32)(UINTN)Private->BbsTablePtr;
- Private->IntThunk->DispatchOpromTable.RuntimeSegment = (UINT16)((OpromRevision < 3) ? 0xffff : (RuntimeAddress >> 4));
- TempData = (UINTN)&Private->IntThunk->DispatchOpromTable;
- Regs.X.ES = EFI_SEGMENT ((UINT32)TempData);
- Regs.X.BX = EFI_OFFSET ((UINT32)TempData);
- //
- // Skip dispatching ROM for those PCI devices that can not be enabled by PciIo->Attributes
- // Otherwise, it may cause the system to hang in some cases
- //
- if (!EFI_ERROR (PciEnableStatus)) {
- DEBUG ((DEBUG_INFO, " Legacy16DispatchOprom - %02x/%02x/%02x\n", Bus, Device, Function));
- Private->LegacyBios.FarCall86 (
- &Private->LegacyBios,
- Private->Legacy16CallSegment,
- Private->Legacy16CallOffset,
- &Regs,
- NULL,
- 0
- );
- } else {
- Regs.X.BX = 0;
- }
-
- if (Private->IntThunk->DispatchOpromTable.NumberBbsEntries != (UINT8)Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries) {
- Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries = (UINT8)Private->IntThunk->DispatchOpromTable.NumberBbsEntries;
- mIgnoreBbsUpdateFlag = TRUE;
- }
-
- //
- // Check if non-BBS compliant drives found
- //
- if (Regs.X.BX != 0) {
- LocalDiskEnd = (UINT8)(LocalDiskStart + Regs.H.BL);
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciSegment = (UINT8)Segment;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciBus = (UINT8)Bus;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciDevice = (UINT8)Device;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciFunction = (UINT8)Function;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].StartDriveNumber = Private->DiskEnd;
- Private->DiskEnd = LocalDiskEnd;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].EndDriveNumber = Private->DiskEnd;
- Private->LegacyEfiHddTableIndex += 1;
- }
-
- //
- // Skip video mode set, if installing VGA
- //
- if (PciHandle != mVgaHandle) {
- //
- // Set mode settings since PrepareToScanRom may change mode
- //
- ACCESS_PAGE0_CODE (
- {
- OldVideoMode = *(UINT8 *)((UINTN)(0x400 + BDA_VIDEO_MODE));
- }
- );
-
- if (VideoMode != OldVideoMode) {
- //
- // The active video mode is changed, restore it to original mode.
- //
- Regs.H.AH = 0x00;
- Regs.H.AL = VideoMode;
- Private->LegacyBios.Int86 (&Private->LegacyBios, 0x10, &Regs);
- }
- }
-
- //
- // Regs.X.AX from the adapter initializion is ignored since some adapters
- // do not follow the standard of setting AX = 0 on success.
- //
- //
- // The ROM could have updated its size so we need to read again.
- //
- if (((EFI_LEGACY_EXPANSION_ROM_HEADER *)RuntimeAddress)->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
- //
- // Now we check the signature (0xaa55) to judge whether the run-time code is truly generated by INIT function.
- // If signature is not valid, that means the INIT function didn't copy the run-time code to RuntimeAddress.
- //
- *RuntimeImageLength = 0;
- } else {
- *RuntimeImageLength = ((EFI_LEGACY_EXPANSION_ROM_HEADER *)RuntimeAddress)->Size512 * 512;
- }
-
- DEBUG ((DEBUG_INFO, " fsize = %x\n", *RuntimeImageLength));
-
- //
- // If OpROM runs in 2.0 mode
- //
- if (PhysicalAddress == 0) {
- if (*RuntimeImageLength < ImageSize) {
- //
- // Make area from end of shadowed rom to end of original rom all ffs
- //
- gBS->SetMem ((VOID *)(InitAddress + *RuntimeImageLength), ImageSize - *RuntimeImageLength, 0xff);
- }
- }
-
- ACCESS_PAGE0_CODE (
- LocalDiskEnd = (UINT8)((*(UINT8 *)((UINTN)0x475)) + 0x80);
- );
-
- //
- // Allow platform to perform any required actions after the
- // OPROM has been initialized.
- //
- Status = Private->LegacyBiosPlatform->PlatformHooks (
- Private->LegacyBiosPlatform,
- EfiPlatformHookAfterRomInit,
- 0,
- PciHandle,
- &RuntimeAddress,
- NULL,
- NULL
- );
- if (PciHandle != NULL) {
- //
- // If no PCI Handle then no header or Bevs.
- //
- if ((*RuntimeImageLength != 0) && (!mIgnoreBbsUpdateFlag)) {
- StartBbsIndex = Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries;
- TempData = RuntimeAddress;
- UpdateBevBcvTable (
- Private,
- (EFI_LEGACY_EXPANSION_ROM_HEADER *)TempData,
- PciIo
- );
- EndBbsIndex = Private->IntThunk->EfiToLegacy16BootTable.NumberBbsEntries;
- LocalDiskEnd = (UINT8)(LocalDiskStart + (UINT8)(EndBbsIndex - StartBbsIndex));
- if (LocalDiskEnd != LocalDiskStart) {
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciSegment = (UINT8)Segment;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciBus = (UINT8)Bus;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciDevice = (UINT8)Device;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].PciFunction = (UINT8)Function;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].StartDriveNumber = Private->DiskEnd;
- Private->DiskEnd = LocalDiskEnd;
- Private->LegacyEfiHddTable[Private->LegacyEfiHddTableIndex].EndDriveNumber = Private->DiskEnd;
- Private->LegacyEfiHddTableIndex += 1;
- }
- }
-
- //
- // Mark PCI device as having a legacy BIOS ROM loaded.
- //
- RomShadow (
- PciHandle,
- (UINT32)RuntimeAddress,
- (UINT32)*RuntimeImageLength,
- LocalDiskStart,
- LocalDiskEnd
- );
- }
-
- //
- // Stuff caller's OPTIONAL return parameters.
- //
- if (RomShadowAddress != NULL) {
- *RomShadowAddress = (VOID *)RuntimeAddress;
- }
-
- if (DiskStart != NULL) {
- *DiskStart = LocalDiskStart;
- }
-
- if (DiskEnd != NULL) {
- *DiskEnd = LocalDiskEnd;
- }
-
- Private->OptionRom = (UINT32)(RuntimeAddress + *RuntimeImageLength);
-
- Status = EFI_SUCCESS;
-
-Done:
- if (PhysicalAddress != 0) {
- //
- // Free pages when OpROM is 3.0
- //
- gBS->FreePages (PhysicalAddress, EFI_SIZE_TO_PAGES (ImageSize));
- }
-
- //
- // Insure all shadowed areas are locked
- //
- Private->LegacyRegion->Lock (
- Private->LegacyRegion,
- 0xC0000,
- 0x40000,
- &Granularity
- );
-
- return Status;
-}
-
-/**
- Let IOMMU grant DMA access for the PCI device.
-
- @param PciHandle The EFI handle for the PCI device.
- @param HostAddress The system memory address to map to the PCI controller.
- @param NumberOfBytes The number of bytes to map.
-
- @retval EFI_SUCCESS The DMA access is granted.
-**/
-EFI_STATUS
-IoMmuGrantAccess (
- IN EFI_HANDLE PciHandle,
- IN EFI_PHYSICAL_ADDRESS HostAddress,
- IN UINTN NumberOfBytes
- )
-{
- EFI_PHYSICAL_ADDRESS DeviceAddress;
- VOID *Mapping;
- EFI_STATUS Status;
-
- if (PciHandle == NULL) {
- return EFI_UNSUPPORTED;
- }
-
- Status = EFI_SUCCESS;
- if (mIoMmu == NULL) {
- gBS->LocateProtocol (&gEdkiiIoMmuProtocolGuid, NULL, (VOID **)&mIoMmu);
- }
-
- if (mIoMmu != NULL) {
- Status = mIoMmu->Map (
- mIoMmu,
- EdkiiIoMmuOperationBusMasterCommonBuffer,
- (VOID *)(UINTN)HostAddress,
- &NumberOfBytes,
- &DeviceAddress,
- &Mapping
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "LegacyPci - IoMmuMap - %r\n", Status));
- } else {
- ASSERT (DeviceAddress == HostAddress);
- Status = mIoMmu->SetAttribute (
- mIoMmu,
- PciHandle,
- Mapping,
- EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "LegacyPci - IoMmuSetAttribute - %r\n", Status));
- }
- }
- }
-
- return Status;
-}
-
-/**
- Load a legacy PC-AT OPROM on the PciHandle device. Return information
- about how many disks were added by the OPROM and the shadow address and
- size. DiskStart & DiskEnd are INT 13h drive letters. Thus 0x80 is C:
-
- @param This Protocol instance pointer.
- @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will
- be loaded. This value is NULL if RomImage is
- non-NULL. This is the normal case.
- @param RomImage A PCI PC-AT ROM image. This argument is non-NULL
- if there is no hardware associated with the ROM
- and thus no PciHandle, otherwise is must be NULL.
- Example is PXE base code.
- @param Flags Indicates if ROM found and if PC-AT.
- @param DiskStart Disk number of first device hooked by the ROM. If
- DiskStart is the same as DiskEnd no disked were
- hooked.
- @param DiskEnd Disk number of the last device hooked by the ROM.
- @param RomShadowAddress Shadow address of PC-AT ROM
- @param RomShadowedSize Size of RomShadowAddress in bytes
-
- @retval EFI_SUCCESS Legacy ROM loaded for this device
- @retval EFI_INVALID_PARAMETER PciHandle not found
- @retval EFI_UNSUPPORTED There is no PCI ROM in the ROM BAR or no onboard
- ROM
-
-**/
-EFI_STATUS
-EFIAPI
-LegacyBiosInstallPciRom (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN EFI_HANDLE PciHandle,
- IN VOID **RomImage,
- OUT UINTN *Flags,
- OUT UINT8 *DiskStart OPTIONAL,
- OUT UINT8 *DiskEnd OPTIONAL,
- OUT VOID **RomShadowAddress OPTIONAL,
- OUT UINT32 *RomShadowedSize OPTIONAL
- )
-{
- EFI_STATUS Status;
- LEGACY_BIOS_INSTANCE *Private;
- VOID *LocalRomImage;
- UINTN ImageSize;
- UINTN RuntimeImageLength;
- EFI_PCI_IO_PROTOCOL *PciIo;
- PCI_TYPE01 PciConfigHeader;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN PciSegment;
- UINTN PciBus;
- UINTN PciDevice;
- UINTN PciFunction;
- UINTN LastBus;
- UINTN Index;
- UINT8 OpromRevision;
- UINT32 Granularity;
- PCI_3_0_DATA_STRUCTURE *Pcir;
-
- OpromRevision = 0;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
- if (Private->Legacy16Table->LastPciBus == 0) {
- //
- // Get last bus number if not already found
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiPciIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
-
- LastBus = 0;
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (
- HandleBuffer[Index],
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Status = PciIo->GetLocation (
- PciIo,
- &PciSegment,
- &PciBus,
- &PciDevice,
- &PciFunction
- );
- if (PciBus > LastBus) {
- LastBus = PciBus;
- }
- }
-
- Private->LegacyRegion->UnLock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
- Private->Legacy16Table->LastPciBus = (UINT8)LastBus;
- Private->LegacyRegion->Lock (
- Private->LegacyRegion,
- 0xE0000,
- 0x20000,
- &Granularity
- );
- }
-
- *Flags = 0;
- if ((PciHandle != NULL) && (RomImage == NULL)) {
- //
- // If PciHandle has OpRom to Execute
- // and OpRom are all associated with Hardware
- //
- Status = gBS->HandleProtocol (
- PciHandle,
- &gEfiPciIoProtocolGuid,
- (VOID **)&PciIo
- );
-
- if (!EFI_ERROR (Status)) {
- PciIo->Pci.Read (
- PciIo,
- EfiPciIoWidthUint32,
- 0,
- sizeof (PciConfigHeader) / sizeof (UINT32),
- &PciConfigHeader
- );
-
- //
- // if video installed & OPROM is video return
- //
- if (
- (
- ((PciConfigHeader.Hdr.ClassCode[2] == PCI_CLASS_OLD) &&
- (PciConfigHeader.Hdr.ClassCode[1] == PCI_CLASS_OLD_VGA))
- ||
- ((PciConfigHeader.Hdr.ClassCode[2] == PCI_CLASS_DISPLAY) &&
- (PciConfigHeader.Hdr.ClassCode[1] == PCI_CLASS_DISPLAY_VGA))
- )
- &&
- (!Private->VgaInstalled)
- )
- {
- mVgaInstallationInProgress = TRUE;
-
- //
- // return EFI_UNSUPPORTED;
- //
- }
- }
-
- //
- // To run any legacy image, the VGA needs to be installed first.
- // if installing the video, then don't need the thunk as already installed.
- //
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformVgaHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
-
- if (!EFI_ERROR (Status)) {
- mVgaHandle = HandleBuffer[0];
- if ((!Private->VgaInstalled) && (PciHandle != mVgaHandle)) {
- //
- // A return status of EFI_NOT_FOUND is considered valid (No EFI
- // driver is controlling video.
- //
- mVgaInstallationInProgress = TRUE;
- Status = LegacyBiosInstallVgaRom (Private);
- if (EFI_ERROR (Status)) {
- if (Status != EFI_NOT_FOUND) {
- mVgaInstallationInProgress = FALSE;
- return Status;
- }
- } else {
- mVgaInstallationInProgress = FALSE;
- }
- }
- }
-
- //
- // See if the option ROM for PciHandle has already been executed
- //
- Status = IsLegacyRom (PciHandle);
-
- if (!EFI_ERROR (Status)) {
- mVgaInstallationInProgress = FALSE;
- GetShadowedRomParameters (
- PciHandle,
- DiskStart,
- DiskEnd,
- RomShadowAddress,
- (UINTN *)RomShadowedSize
- );
- return EFI_SUCCESS;
- }
-
- Status = LegacyBiosCheckPciRomEx (
- &Private->LegacyBios,
- PciHandle,
- &LocalRomImage,
- &ImageSize,
- &RuntimeImageLength,
- Flags,
- &OpromRevision,
- NULL
- );
- if (EFI_ERROR (Status)) {
- //
- // There is no PCI ROM in the ROM BAR or no onboard ROM
- //
- mVgaInstallationInProgress = FALSE;
- return EFI_UNSUPPORTED;
- }
- } else {
- if ((RomImage == NULL) || (*RomImage == NULL)) {
- //
- // If PciHandle is NULL, and no OpRom is to be associated
- //
- mVgaInstallationInProgress = FALSE;
- return EFI_UNSUPPORTED;
- }
-
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformVgaHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
- if ((!EFI_ERROR (Status)) && (!Private->VgaInstalled)) {
- //
- // A return status of EFI_NOT_FOUND is considered valid (No EFI
- // driver is controlling video.
- //
- mVgaInstallationInProgress = TRUE;
- Status = LegacyBiosInstallVgaRom (Private);
- if (EFI_ERROR (Status)) {
- if (Status != EFI_NOT_FOUND) {
- mVgaInstallationInProgress = FALSE;
- return Status;
- }
- } else {
- mVgaInstallationInProgress = FALSE;
- }
- }
-
- LocalRomImage = *RomImage;
- if ((((PCI_EXPANSION_ROM_HEADER *)LocalRomImage)->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) ||
- (((PCI_EXPANSION_ROM_HEADER *)LocalRomImage)->PcirOffset == 0) ||
- ((((PCI_EXPANSION_ROM_HEADER *)LocalRomImage)->PcirOffset & 3) != 0))
- {
- mVgaInstallationInProgress = FALSE;
- return EFI_UNSUPPORTED;
- }
-
- Pcir = (PCI_3_0_DATA_STRUCTURE *)
- ((UINT8 *)LocalRomImage + ((PCI_EXPANSION_ROM_HEADER *)LocalRomImage)->PcirOffset);
-
- if ((Pcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) || (Pcir->CodeType != PCI_CODE_TYPE_PCAT_IMAGE)) {
- mVgaInstallationInProgress = FALSE;
- return EFI_UNSUPPORTED;
- }
-
- ImageSize = Pcir->ImageLength * 512;
- if (Pcir->Length >= 0x1C) {
- OpromRevision = Pcir->Revision;
- } else {
- OpromRevision = 0;
- }
-
- if (Pcir->Revision < 3) {
- RuntimeImageLength = 0;
- } else {
- RuntimeImageLength = Pcir->MaxRuntimeImageLength * 512;
- }
- }
-
- //
- // Grant access for below 1M
- // BDA/EBDA/LowPMM and scratch memory for OPROM.
- //
- IoMmuGrantAccess (PciHandle, 0, SIZE_1MB);
- //
- // Grant access for HiPmm
- //
- IoMmuGrantAccess (
- PciHandle,
- Private->IntThunk->EfiToLegacy16InitTable.HiPmmMemory,
- Private->IntThunk->EfiToLegacy16InitTable.HiPmmMemorySizeInBytes
- );
-
- //
- // Shadow and initialize the OpROM.
- //
- ASSERT (Private->TraceIndex < 0x200);
- Private->Trace[Private->TraceIndex] = LEGACY_PCI_TRACE_000;
- Private->TraceIndex++;
- Private->TraceIndex = (UINT16)(Private->TraceIndex % 0x200);
- Status = LegacyBiosInstallRom (
- This,
- Private,
- PciHandle,
- OpromRevision,
- LocalRomImage,
- ImageSize,
- &RuntimeImageLength,
- DiskStart,
- DiskEnd,
- RomShadowAddress
- );
- if (RomShadowedSize != NULL) {
- *RomShadowedSize = (UINT32)RuntimeImageLength;
- }
-
- mVgaInstallationInProgress = FALSE;
- return Status;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/LegacySio.c b/OvmfPkg/Csm/LegacyBiosDxe/LegacySio.c deleted file mode 100644 index 0cb48fa..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/LegacySio.c +++ /dev/null @@ -1,489 +0,0 @@ -/** @file
- Collect Sio information from Native EFI Drivers.
- Sio is floppy, parallel, serial, ... hardware
-
-Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-
-/**
- Collect EFI Info about legacy devices through Super IO interface.
-
- @param SioPtr Pointer to SIO data.
-
- @retval EFI_SUCCESS When SIO data is got successfully.
- @retval EFI_NOT_FOUND When ISA IO interface is absent.
-
-**/
-EFI_STATUS
-LegacyBiosBuildSioDataFromSio (
- IN DEVICE_PRODUCER_DATA_HEADER *SioPtr
- )
-{
- EFI_STATUS Status;
- DEVICE_PRODUCER_SERIAL *SioSerial;
- DEVICE_PRODUCER_PARALLEL *SioParallel;
- DEVICE_PRODUCER_FLOPPY *SioFloppy;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- UINTN ChildIndex;
- EFI_SIO_PROTOCOL *Sio;
- ACPI_RESOURCE_HEADER_PTR Resources;
- EFI_ACPI_IO_PORT_DESCRIPTOR *IoResource;
- EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR *FixedIoResource;
- EFI_ACPI_DMA_DESCRIPTOR *DmaResource;
- EFI_ACPI_IRQ_NOFLAG_DESCRIPTOR *IrqResource;
- UINT16 Address;
- UINT8 Dma;
- UINT8 Irq;
- UINTN EntryCount;
- EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_SERIAL_IO_PROTOCOL *SerialIo;
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;
- ACPI_HID_DEVICE_PATH *Acpi;
-
- //
- // Get the list of ISA controllers in the system
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiSioProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Collect legacy information from each of the ISA controllers in the system
- //
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiSioProtocolGuid, (VOID **)&Sio);
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- Address = MAX_UINT16;
- Dma = MAX_UINT8;
- Irq = MAX_UINT8;
- Status = Sio->GetResources (Sio, &Resources);
- if (!EFI_ERROR (Status)) {
- //
- // Get the base address information from ACPI resource descriptor.
- //
- while (Resources.SmallHeader->Byte != ACPI_END_TAG_DESCRIPTOR) {
- switch (Resources.SmallHeader->Byte) {
- case ACPI_IO_PORT_DESCRIPTOR:
- IoResource = (EFI_ACPI_IO_PORT_DESCRIPTOR *)Resources.SmallHeader;
- Address = IoResource->BaseAddressMin;
- break;
-
- case ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR:
- FixedIoResource = (EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR *)Resources.SmallHeader;
- Address = FixedIoResource->BaseAddress;
- break;
-
- case ACPI_DMA_DESCRIPTOR:
- DmaResource = (EFI_ACPI_DMA_DESCRIPTOR *)Resources.SmallHeader;
- Dma = (UINT8)LowBitSet32 (DmaResource->ChannelMask);
- break;
-
- case ACPI_IRQ_DESCRIPTOR:
- case ACPI_IRQ_NOFLAG_DESCRIPTOR:
- IrqResource = (EFI_ACPI_IRQ_NOFLAG_DESCRIPTOR *)Resources.SmallHeader;
- Irq = (UINT8)LowBitSet32 (IrqResource->Mask);
- break;
-
- default:
- break;
- }
-
- if (Resources.SmallHeader->Bits.Type == 0) {
- Resources.SmallHeader = (ACPI_SMALL_RESOURCE_HEADER *)((UINT8 *)Resources.SmallHeader
- + Resources.SmallHeader->Bits.Length
- + sizeof (*Resources.SmallHeader));
- } else {
- Resources.LargeHeader = (ACPI_LARGE_RESOURCE_HEADER *)((UINT8 *)Resources.LargeHeader
- + Resources.LargeHeader->Length
- + sizeof (*Resources.LargeHeader));
- }
- }
- }
-
- DEBUG ((DEBUG_INFO, "LegacySio: Address/Dma/Irq = %x/%d/%d\n", Address, Dma, Irq));
-
- DevicePath = DevicePathFromHandle (HandleBuffer[Index]);
- if (DevicePath == NULL) {
- continue;
- }
-
- Acpi = NULL;
- while (!IsDevicePathEnd (DevicePath)) {
- Acpi = (ACPI_HID_DEVICE_PATH *)DevicePath;
- DevicePath = NextDevicePathNode (DevicePath);
- }
-
- if ((Acpi == NULL) || (DevicePathType (Acpi) != ACPI_DEVICE_PATH) ||
- ((DevicePathSubType (Acpi) != ACPI_DP) && (DevicePathSubType (Acpi) != ACPI_EXTENDED_DP))
- )
- {
- continue;
- }
-
- //
- // See if this is an ISA serial port
- //
- // Ignore DMA resource since it is always returned NULL
- //
- if ((Acpi->HID == EISA_PNP_ID (0x500)) || (Acpi->HID == EISA_PNP_ID (0x501))) {
- if ((Acpi->UID < 4) && (Address != MAX_UINT16) && (Irq != MAX_UINT8)) {
- //
- // Get the handle of the child device that has opened the Super I/O Protocol
- //
- Status = gBS->OpenProtocolInformation (
- HandleBuffer[Index],
- &gEfiSioProtocolGuid,
- &OpenInfoBuffer,
- &EntryCount
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- for (ChildIndex = 0; ChildIndex < EntryCount; ChildIndex++) {
- if ((OpenInfoBuffer[ChildIndex].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {
- Status = gBS->HandleProtocol (OpenInfoBuffer[ChildIndex].ControllerHandle, &gEfiSerialIoProtocolGuid, (VOID **)&SerialIo);
- if (!EFI_ERROR (Status)) {
- SioSerial = &SioPtr->Serial[Acpi->UID];
- SioSerial->Address = Address;
- SioSerial->Irq = Irq;
- SioSerial->Mode = DEVICE_SERIAL_MODE_NORMAL | DEVICE_SERIAL_MODE_DUPLEX_HALF;
- break;
- }
- }
- }
-
- FreePool (OpenInfoBuffer);
- }
- }
-
- //
- // See if this is an ISA parallel port
- //
- // Ignore DMA resource since it is always returned NULL, port
- // only used in output mode.
- //
- if ((Acpi->HID == EISA_PNP_ID (0x400)) || (Acpi->HID == EISA_PNP_ID (0x401))) {
- if ((Acpi->UID < 3) && (Address != MAX_UINT16) && (Irq != MAX_UINT8) && (Dma != MAX_UINT8)) {
- SioParallel = &SioPtr->Parallel[Acpi->UID];
- SioParallel->Address = Address;
- SioParallel->Irq = Irq;
- SioParallel->Dma = Dma;
- SioParallel->Mode = DEVICE_PARALLEL_MODE_MODE_OUTPUT_ONLY;
- }
- }
-
- //
- // See if this is an ISA floppy controller
- //
- if (Acpi->HID == EISA_PNP_ID (0x604)) {
- if ((Address != MAX_UINT16) && (Irq != MAX_UINT8) && (Dma != MAX_UINT8)) {
- Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiBlockIoProtocolGuid, (VOID **)&BlockIo);
- if (!EFI_ERROR (Status)) {
- SioFloppy = &SioPtr->Floppy;
- SioFloppy->Address = Address;
- SioFloppy->Irq = Irq;
- SioFloppy->Dma = Dma;
- SioFloppy->NumberOfFloppy++;
- }
- }
- }
-
- //
- // See if this is a mouse
- // Always set mouse found so USB hot plug will work
- //
- // Ignore lower byte of HID. Pnp0fxx is any type of mouse.
- //
- // Hid = ResourceList->Device.HID & 0xff00ffff;
- // PnpId = EISA_PNP_ID(0x0f00);
- // if (Hid == PnpId) {
- // if (ResourceList->Device.UID == 1) {
- // Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiSimplePointerProtocolGuid, &SimplePointer);
- // if (!EFI_ERROR (Status)) {
- //
- SioPtr->MousePresent = 0x01;
- //
- // }
- // }
- // }
- //
- }
-
- FreePool (HandleBuffer);
- return EFI_SUCCESS;
-}
-
-/**
- Collect EFI Info about legacy devices through ISA IO interface.
-
- @param SioPtr Pointer to SIO data.
-
- @retval EFI_SUCCESS When SIO data is got successfully.
- @retval EFI_NOT_FOUND When ISA IO interface is absent.
-
-**/
-EFI_STATUS
-LegacyBiosBuildSioDataFromIsaIo (
- IN DEVICE_PRODUCER_DATA_HEADER *SioPtr
- )
-{
- EFI_STATUS Status;
- DEVICE_PRODUCER_SERIAL *SioSerial;
- DEVICE_PRODUCER_PARALLEL *SioParallel;
- DEVICE_PRODUCER_FLOPPY *SioFloppy;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
- UINTN Index;
- UINTN ResourceIndex;
- UINTN ChildIndex;
- EFI_ISA_IO_PROTOCOL *IsaIo;
- EFI_ISA_ACPI_RESOURCE_LIST *ResourceList;
- EFI_ISA_ACPI_RESOURCE *IoResource;
- EFI_ISA_ACPI_RESOURCE *DmaResource;
- EFI_ISA_ACPI_RESOURCE *InterruptResource;
- UINTN EntryCount;
- EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_SERIAL_IO_PROTOCOL *SerialIo;
-
- //
- // Get the list of ISA controllers in the system
- //
- Status = gBS->LocateHandleBuffer (
- ByProtocol,
- &gEfiIsaIoProtocolGuid,
- NULL,
- &HandleCount,
- &HandleBuffer
- );
- if (EFI_ERROR (Status)) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Collect legacy information from each of the ISA controllers in the system
- //
- for (Index = 0; Index < HandleCount; Index++) {
- Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiIsaIoProtocolGuid, (VOID **)&IsaIo);
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- ResourceList = IsaIo->ResourceList;
-
- if (ResourceList == NULL) {
- continue;
- }
-
- //
- // Collect the resource types neededto fill in the SIO data structure
- //
- IoResource = NULL;
- DmaResource = NULL;
- InterruptResource = NULL;
- for (ResourceIndex = 0;
- ResourceList->ResourceItem[ResourceIndex].Type != EfiIsaAcpiResourceEndOfList;
- ResourceIndex++
- )
- {
- switch (ResourceList->ResourceItem[ResourceIndex].Type) {
- case EfiIsaAcpiResourceIo:
- IoResource = &ResourceList->ResourceItem[ResourceIndex];
- break;
-
- case EfiIsaAcpiResourceMemory:
- break;
-
- case EfiIsaAcpiResourceDma:
- DmaResource = &ResourceList->ResourceItem[ResourceIndex];
- break;
-
- case EfiIsaAcpiResourceInterrupt:
- InterruptResource = &ResourceList->ResourceItem[ResourceIndex];
- break;
-
- default:
- break;
- }
- }
-
- //
- // See if this is an ISA serial port
- //
- // Ignore DMA resource since it is always returned NULL
- //
- if ((ResourceList->Device.HID == EISA_PNP_ID (0x500)) || (ResourceList->Device.HID == EISA_PNP_ID (0x501))) {
- if ((ResourceList->Device.UID <= 3) &&
- (IoResource != NULL) &&
- (InterruptResource != NULL)
- )
- {
- //
- // Get the handle of the child device that has opened the ISA I/O Protocol
- //
- Status = gBS->OpenProtocolInformation (
- HandleBuffer[Index],
- &gEfiIsaIoProtocolGuid,
- &OpenInfoBuffer,
- &EntryCount
- );
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // We want resource for legacy even if no 32-bit driver installed
- //
- for (ChildIndex = 0; ChildIndex < EntryCount; ChildIndex++) {
- if ((OpenInfoBuffer[ChildIndex].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {
- Status = gBS->HandleProtocol (OpenInfoBuffer[ChildIndex].ControllerHandle, &gEfiSerialIoProtocolGuid, (VOID **)&SerialIo);
- if (!EFI_ERROR (Status)) {
- SioSerial = &SioPtr->Serial[ResourceList->Device.UID];
- SioSerial->Address = (UINT16)IoResource->StartRange;
- SioSerial->Irq = (UINT8)InterruptResource->StartRange;
- SioSerial->Mode = DEVICE_SERIAL_MODE_NORMAL | DEVICE_SERIAL_MODE_DUPLEX_HALF;
- break;
- }
- }
- }
-
- FreePool (OpenInfoBuffer);
- }
- }
-
- //
- // See if this is an ISA parallel port
- //
- // Ignore DMA resource since it is always returned NULL, port
- // only used in output mode.
- //
- if ((ResourceList->Device.HID == EISA_PNP_ID (0x400)) || (ResourceList->Device.HID == EISA_PNP_ID (0x401))) {
- if ((ResourceList->Device.UID <= 2) &&
- (IoResource != NULL) &&
- (InterruptResource != NULL) &&
- (DmaResource != NULL)
- )
- {
- SioParallel = &SioPtr->Parallel[ResourceList->Device.UID];
- SioParallel->Address = (UINT16)IoResource->StartRange;
- SioParallel->Irq = (UINT8)InterruptResource->StartRange;
- SioParallel->Dma = (UINT8)DmaResource->StartRange;
- SioParallel->Mode = DEVICE_PARALLEL_MODE_MODE_OUTPUT_ONLY;
- }
- }
-
- //
- // See if this is an ISA floppy controller
- //
- if (ResourceList->Device.HID == EISA_PNP_ID (0x604)) {
- if ((IoResource != NULL) && (InterruptResource != NULL) && (DmaResource != NULL)) {
- Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiBlockIoProtocolGuid, (VOID **)&BlockIo);
- if (!EFI_ERROR (Status)) {
- SioFloppy = &SioPtr->Floppy;
- SioFloppy->Address = (UINT16)IoResource->StartRange;
- SioFloppy->Irq = (UINT8)InterruptResource->StartRange;
- SioFloppy->Dma = (UINT8)DmaResource->StartRange;
- SioFloppy->NumberOfFloppy++;
- }
- }
- }
-
- //
- // See if this is a mouse
- // Always set mouse found so USB hot plug will work
- //
- // Ignore lower byte of HID. Pnp0fxx is any type of mouse.
- //
- // Hid = ResourceList->Device.HID & 0xff00ffff;
- // PnpId = EISA_PNP_ID(0x0f00);
- // if (Hid == PnpId) {
- // if (ResourceList->Device.UID == 1) {
- // Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiSimplePointerProtocolGuid, &SimplePointer);
- // if (!EFI_ERROR (Status)) {
- //
- SioPtr->MousePresent = 0x01;
- //
- // }
- // }
- // }
- //
- }
-
- FreePool (HandleBuffer);
- return EFI_SUCCESS;
-}
-
-/**
- Collect EFI Info about legacy devices.
-
- @param Private Legacy BIOS Instance data
-
- @retval EFI_SUCCESS It should always work.
-
-**/
-EFI_STATUS
-LegacyBiosBuildSioData (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- DEVICE_PRODUCER_DATA_HEADER *SioPtr;
- EFI_HANDLE IsaBusController;
- UINTN HandleCount;
- EFI_HANDLE *HandleBuffer;
-
- //
- // Get the pointer to the SIO data structure
- //
- SioPtr = &Private->IntThunk->EfiToLegacy16BootTable.SioData;
-
- //
- // Zero the data in the SIO data structure
- //
- gBS->SetMem (SioPtr, sizeof (DEVICE_PRODUCER_DATA_HEADER), 0);
-
- //
- // Find the ISA Bus Controller used for legacy
- //
- Status = Private->LegacyBiosPlatform->GetPlatformHandle (
- Private->LegacyBiosPlatform,
- EfiGetPlatformIsaBusHandle,
- 0,
- &HandleBuffer,
- &HandleCount,
- NULL
- );
- IsaBusController = HandleBuffer[0];
- if (!EFI_ERROR (Status)) {
- //
- // Force ISA Bus Controller to produce all ISA devices
- //
- gBS->ConnectController (IsaBusController, NULL, NULL, TRUE);
- }
-
- Status = LegacyBiosBuildSioDataFromIsaIo (SioPtr);
- if (EFI_ERROR (Status)) {
- LegacyBiosBuildSioDataFromSio (SioPtr);
- }
-
- return EFI_SUCCESS;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c b/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c deleted file mode 100644 index 62f19b6..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/Thunk.c +++ /dev/null @@ -1,422 +0,0 @@ -/** @file
- Call into 16-bit BIOS code, Use AsmThunk16 function of BaseLib.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyBiosInterface.h"
-
-THUNK_CONTEXT mThunkContext;
-
-/**
- Sets the counter value for Timer #0 in a legacy 8254 timer.
-
- @param Count - The 16-bit counter value to program into Timer #0 of the legacy 8254 timer.
-
-**/
-VOID
-SetPitCount (
- IN UINT16 Count
- )
-{
- IoWrite8 (TIMER_CONTROL_PORT, TIMER0_CONTROL_WORD);
- IoWrite8 (TIMER0_COUNT_PORT, (UINT8)(Count & 0xFF));
- IoWrite8 (TIMER0_COUNT_PORT, (UINT8)((Count>>8) & 0xFF));
-}
-
-/**
- Thunk to 16-bit real mode and execute a software interrupt with a vector
- of BiosInt. Regs will contain the 16-bit register context on entry and
- exit.
-
- @param This Protocol instance pointer.
- @param BiosInt Processor interrupt vector to invoke
- @param Regs Register contexted passed into (and returned) from thunk to
- 16-bit mode
-
- @retval FALSE Thunk completed, and there were no BIOS errors in the target code.
- See Regs for status.
- @retval TRUE There was a BIOS erro in the target code.
-
-**/
-BOOLEAN
-EFIAPI
-LegacyBiosInt86 (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT8 BiosInt,
- IN EFI_IA32_REGISTER_SET *Regs
- )
-{
- UINT16 Segment;
- UINT16 Offset;
-
- Regs->X.Flags.Reserved1 = 1;
- Regs->X.Flags.Reserved2 = 0;
- Regs->X.Flags.Reserved3 = 0;
- Regs->X.Flags.Reserved4 = 0;
- Regs->X.Flags.IOPL = 3;
- Regs->X.Flags.NT = 0;
- Regs->X.Flags.IF = 0;
- Regs->X.Flags.TF = 0;
- Regs->X.Flags.CF = 0;
- //
- // The base address of legacy interrupt vector table is 0.
- // We use this base address to get the legacy interrupt handler.
- //
- ACCESS_PAGE0_CODE (
- Segment = (UINT16)(((UINT32 *)0)[BiosInt] >> 16);
- Offset = (UINT16)((UINT32 *)0)[BiosInt];
- );
-
- return InternalLegacyBiosFarCall (
- This,
- Segment,
- Offset,
- Regs,
- &Regs->X.Flags,
- sizeof (Regs->X.Flags)
- );
-}
-
-/**
- Thunk to 16-bit real mode and call Segment:Offset. Regs will contain the
- 16-bit register context on entry and exit. Arguments can be passed on
- the Stack argument
-
- @param This Protocol instance pointer.
- @param Segment Segemnt of 16-bit mode call
- @param Offset Offset of 16-bit mdoe call
- @param Regs Register contexted passed into (and returned) from
- thunk to 16-bit mode
- @param Stack Caller allocated stack used to pass arguments
- @param StackSize Size of Stack in bytes
-
- @retval FALSE Thunk completed, and there were no BIOS errors in
- the target code. See Regs for status.
- @retval TRUE There was a BIOS erro in the target code.
-
-**/
-BOOLEAN
-EFIAPI
-LegacyBiosFarCall86 (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT16 Segment,
- IN UINT16 Offset,
- IN EFI_IA32_REGISTER_SET *Regs,
- IN VOID *Stack,
- IN UINTN StackSize
- )
-{
- Regs->X.Flags.Reserved1 = 1;
- Regs->X.Flags.Reserved2 = 0;
- Regs->X.Flags.Reserved3 = 0;
- Regs->X.Flags.Reserved4 = 0;
- Regs->X.Flags.IOPL = 3;
- Regs->X.Flags.NT = 0;
- Regs->X.Flags.IF = 1;
- Regs->X.Flags.TF = 0;
- Regs->X.Flags.CF = 0;
-
- return InternalLegacyBiosFarCall (This, Segment, Offset, Regs, Stack, StackSize);
-}
-
-/**
- Provide NULL interrupt handler which is used to check
- if there is more than one HW interrupt registers with the CPU AP.
-
- @param InterruptType - The type of interrupt that occurred
- @param SystemContext - A pointer to the system context when the interrupt occurred
-
-**/
-VOID
-EFIAPI
-LegacyBiosNullInterruptHandler (
- IN EFI_EXCEPTION_TYPE InterruptType,
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
-}
-
-/**
- Thunk to 16-bit real mode and call Segment:Offset. Regs will contain the
- 16-bit register context on entry and exit. Arguments can be passed on
- the Stack argument
-
- @param This Protocol instance pointer.
- @param Segment Segemnt of 16-bit mode call
- @param Offset Offset of 16-bit mdoe call
- @param Regs Register contexted passed into (and returned) from thunk to
- 16-bit mode
- @param Stack Caller allocated stack used to pass arguments
- @param StackSize Size of Stack in bytes
-
- @retval FALSE Thunk completed, and there were no BIOS errors in the target code.
- See Regs for status.
- @retval TRUE There was a BIOS erro in the target code.
-
-**/
-BOOLEAN
-EFIAPI
-InternalLegacyBiosFarCall (
- IN EFI_LEGACY_BIOS_PROTOCOL *This,
- IN UINT16 Segment,
- IN UINT16 Offset,
- IN EFI_IA32_REGISTER_SET *Regs,
- IN VOID *Stack,
- IN UINTN StackSize
- )
-{
- UINTN Status;
- LEGACY_BIOS_INSTANCE *Private;
- UINT16 *Stack16;
- EFI_TPL OriginalTpl;
- IA32_REGISTER_SET ThunkRegSet;
- BOOLEAN InterruptState;
- UINT64 TimerPeriod;
-
- Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);
-
- ZeroMem (&ThunkRegSet, sizeof (ThunkRegSet));
- ThunkRegSet.X.DI = Regs->X.DI;
- ThunkRegSet.X.SI = Regs->X.SI;
- ThunkRegSet.X.BP = Regs->X.BP;
- ThunkRegSet.X.BX = Regs->X.BX;
- ThunkRegSet.X.DX = Regs->X.DX;
- //
- // Sometimes, ECX is used to pass in 32 bit data. For example, INT 1Ah, AX = B10Dh is
- // "PCI BIOS v2.0c + Write Configuration DWORD" and ECX has the dword to write.
- //
- ThunkRegSet.E.ECX = Regs->E.ECX;
- ThunkRegSet.X.AX = Regs->X.AX;
- ThunkRegSet.E.DS = Regs->X.DS;
- ThunkRegSet.E.ES = Regs->X.ES;
-
- CopyMem (&(ThunkRegSet.E.EFLAGS.UintN), &(Regs->X.Flags), sizeof (Regs->X.Flags));
-
- //
- // Clear the error flag; thunk code may set it. Stack16 should be the high address
- // Make Statk16 address the low 16 bit must be not zero.
- //
- Stack16 = (UINT16 *)((UINT8 *)mThunkContext.RealModeBuffer + mThunkContext.RealModeBufferSize - sizeof (UINT16));
-
- //
- // Save current rate of DXE Timer
- //
- Private->Timer->GetTimerPeriod (Private->Timer, &TimerPeriod);
-
- //
- // Disable DXE Timer while executing in real mode
- //
- Private->Timer->SetTimerPeriod (Private->Timer, 0);
-
- //
- // Save and disable interrupt of debug timer
- //
- InterruptState = SaveAndSetDebugTimerInterrupt (FALSE);
-
- //
- // The call to Legacy16 is a critical section to EFI
- //
- OriginalTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
-
- //
- // Check to see if there is more than one HW interrupt registers with the CPU AP.
- // If there is, then ASSERT() since that is not compatible with the CSM because
- // interupts other than the Timer interrupt that was disabled above can not be
- // handled properly from real mode.
- //
- DEBUG_CODE_BEGIN ();
- UINTN Vector;
- UINTN Count;
-
- for (Vector = 0x20, Count = 0; Vector < 0x100; Vector++) {
- Status = Private->Cpu->RegisterInterruptHandler (Private->Cpu, Vector, LegacyBiosNullInterruptHandler);
- if (Status == EFI_ALREADY_STARTED) {
- Count++;
- }
-
- if (Status == EFI_SUCCESS) {
- Private->Cpu->RegisterInterruptHandler (Private->Cpu, Vector, NULL);
- }
- }
-
- if (Count >= 2) {
- DEBUG ((DEBUG_ERROR, "ERROR: More than one HW interrupt active with CSM enabled\n"));
- }
-
- ASSERT (Count < 2);
- DEBUG_CODE_END ();
-
- //
- // If the Timer AP has enabled the 8254 timer IRQ and the current 8254 timer
- // period is less than the CSM required rate of 54.9254, then force the 8254
- // PIT counter to 0, which is the CSM required rate of 54.9254 ms
- //
- if (Private->TimerUses8254 && (TimerPeriod < 549254)) {
- SetPitCount (0);
- }
-
- if ((Stack != NULL) && (StackSize != 0)) {
- //
- // Copy Stack to low memory stack
- //
- Stack16 -= StackSize / sizeof (UINT16);
- CopyMem (Stack16, Stack, StackSize);
- }
-
- ThunkRegSet.E.SS = (UINT16)(((UINTN)Stack16 >> 16) << 12);
- ThunkRegSet.E.ESP = (UINT16)(UINTN)Stack16;
- ThunkRegSet.E.CS = Segment;
- ThunkRegSet.E.Eip = Offset;
-
- mThunkContext.RealModeState = &ThunkRegSet;
-
- //
- // Set Legacy16 state. 0x08, 0x70 is legacy 8259 vector bases.
- //
- Status = Private->Legacy8259->SetMode (Private->Legacy8259, Efi8259LegacyMode, NULL, NULL);
- ASSERT_EFI_ERROR (Status);
-
- AsmThunk16 (&mThunkContext);
-
- if ((Stack != NULL) && (StackSize != 0)) {
- //
- // Copy low memory stack to Stack
- //
- CopyMem (Stack, Stack16, StackSize);
- }
-
- //
- // Restore protected mode interrupt state
- //
- Status = Private->Legacy8259->SetMode (Private->Legacy8259, Efi8259ProtectedMode, NULL, NULL);
- ASSERT_EFI_ERROR (Status);
-
- mThunkContext.RealModeState = NULL;
-
- //
- // Enable and restore rate of DXE Timer
- //
- Private->Timer->SetTimerPeriod (Private->Timer, TimerPeriod);
-
- //
- // End critical section
- //
- gBS->RestoreTPL (OriginalTpl);
-
- //
- // OPROM may allocate EBDA range by itself and change EBDA base and EBDA size.
- // Get the current EBDA base address, and compared with pre-allocate minimum
- // EBDA base address, if the current EBDA base address is smaller, it indicates
- // PcdEbdaReservedMemorySize should be adjusted to larger for more OPROMs.
- //
- DEBUG_CODE_BEGIN ();
- {
- UINTN EbdaBaseAddress;
- UINTN ReservedEbdaBaseAddress;
-
- ACCESS_PAGE0_CODE (
- EbdaBaseAddress = (*(UINT16 *)(UINTN)0x40E) << 4;
- ReservedEbdaBaseAddress = CONVENTIONAL_MEMORY_TOP
- - PcdGet32 (PcdEbdaReservedMemorySize);
- ASSERT (ReservedEbdaBaseAddress <= EbdaBaseAddress);
- );
- }
- DEBUG_CODE_END ();
-
- //
- // Restore interrupt of debug timer
- //
- SaveAndSetDebugTimerInterrupt (InterruptState);
-
- Regs->E.EDI = ThunkRegSet.E.EDI;
- Regs->E.ESI = ThunkRegSet.E.ESI;
- Regs->E.EBP = ThunkRegSet.E.EBP;
- Regs->E.EBX = ThunkRegSet.E.EBX;
- Regs->E.EDX = ThunkRegSet.E.EDX;
- Regs->E.ECX = ThunkRegSet.E.ECX;
- Regs->E.EAX = ThunkRegSet.E.EAX;
- Regs->X.SS = ThunkRegSet.E.SS;
- Regs->X.CS = ThunkRegSet.E.CS;
- Regs->X.DS = ThunkRegSet.E.DS;
- Regs->X.ES = ThunkRegSet.E.ES;
-
- CopyMem (&(Regs->X.Flags), &(ThunkRegSet.E.EFLAGS.UintN), sizeof (Regs->X.Flags));
-
- return (BOOLEAN)(Regs->X.Flags.CF == 1);
-}
-
-/**
- Allocate memory < 1 MB and copy the thunker code into low memory. Se up
- all the descriptors.
-
- @param Private Private context for Legacy BIOS
-
- @retval EFI_SUCCESS Should only pass.
-
-**/
-EFI_STATUS
-LegacyBiosInitializeThunk (
- IN LEGACY_BIOS_INSTANCE *Private
- )
-{
- EFI_STATUS Status;
- EFI_PHYSICAL_ADDRESS MemoryAddress;
- UINT8 TimerVector;
-
- MemoryAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Private->IntThunk;
-
- mThunkContext.RealModeBuffer = (VOID *)(UINTN)(MemoryAddress + ((sizeof (LOW_MEMORY_THUNK) / EFI_PAGE_SIZE) + 1) * EFI_PAGE_SIZE);
- mThunkContext.RealModeBufferSize = EFI_PAGE_SIZE;
- mThunkContext.ThunkAttributes = THUNK_ATTRIBUTE_BIG_REAL_MODE | THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15;
-
- AsmPrepareThunk16 (&mThunkContext);
-
- //
- // Get the interrupt vector number corresponding to IRQ0 from the 8259 driver
- //
- TimerVector = 0;
- Status = Private->Legacy8259->GetVector (Private->Legacy8259, Efi8259Irq0, &TimerVector);
- ASSERT_EFI_ERROR (Status);
-
- //
- // Check to see if the Timer AP has hooked the IRQ0 from the 8254 PIT
- //
- Status = Private->Cpu->RegisterInterruptHandler (
- Private->Cpu,
- TimerVector,
- LegacyBiosNullInterruptHandler
- );
- if (Status == EFI_SUCCESS) {
- //
- // If the Timer AP has not enabled the 8254 timer IRQ, then force the 8254 PIT
- // counter to 0, which is the CSM required rate of 54.9254 ms
- //
- Private->Cpu->RegisterInterruptHandler (
- Private->Cpu,
- TimerVector,
- NULL
- );
- SetPitCount (0);
-
- //
- // Save status that the Timer AP is not using the 8254 PIT
- //
- Private->TimerUses8254 = FALSE;
- } else if (Status == EFI_ALREADY_STARTED) {
- //
- // Save status that the Timer AP is using the 8254 PIT
- //
- Private->TimerUses8254 = TRUE;
- } else {
- //
- // Unexpected status from CPU AP RegisterInterruptHandler()
- //
- ASSERT (FALSE);
- }
-
- return EFI_SUCCESS;
-}
diff --git a/OvmfPkg/Csm/LegacyBiosDxe/X64/InterruptTable.nasm b/OvmfPkg/Csm/LegacyBiosDxe/X64/InterruptTable.nasm deleted file mode 100644 index afc2f0e..0000000 --- a/OvmfPkg/Csm/LegacyBiosDxe/X64/InterruptTable.nasm +++ /dev/null @@ -1,64 +0,0 @@ -;; @file
-; Interrupt Redirection Template
-;
-; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
-;
-; SPDX-License-Identifier: BSD-2-Clause-Patent
-;
-;;
-
- DEFAULT REL
- SECTION .text
-
-;----------------------------------------------------------------------------
-; Procedure: InterruptRedirectionTemplate: Redirects interrupts 0x68-0x6F
-;
-; Input: None
-;
-; Output: None
-;
-; Prototype: VOID
-; InterruptRedirectionTemplate (
-; VOID
-; );
-;
-; Saves: None
-;
-; Modified: None
-;
-; Description: Contains the code that is copied into low memory (below 640K).
-; This code reflects interrupts 0x68-0x6f to interrupts 0x08-0x0f.
-; This template must be copied into low memory, and the IDT entries
-; 0x68-0x6F must be point to the low memory copy of this code. Each
-; entry is 4 bytes long, so IDT entries 0x68-0x6F can be easily
-; computed.
-;
-;----------------------------------------------------------------------------
-
-global ASM_PFX(InterruptRedirectionTemplate)
-ASM_PFX(InterruptRedirectionTemplate):
- int 0x8
- DB 0xcf ; IRET
- nop
- int 0x9
- DB 0xcf ; IRET
- nop
- int 0xa
- DB 0xcf ; IRET
- nop
- int 0xb
- DB 0xcf ; IRET
- nop
- int 0xc
- DB 0xcf ; IRET
- nop
- int 0xd
- DB 0xcf ; IRET
- nop
- int 0xe
- DB 0xcf ; IRET
- nop
- int 0xf
- DB 0xcf ; IRET
- nop
-
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