diff options
Diffstat (limited to 'OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c')
| -rw-r--r-- | OvmfPkg/Csm/LegacyBiosDxe/LegacyBootSupport.c | 2212 |
1 files changed, 0 insertions, 2212 deletions
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;
-}
|