diff options
Diffstat (limited to 'EdkUnixPkg/Dxe/PlatformBds/Generic/Capsules.c')
| -rw-r--r-- | EdkUnixPkg/Dxe/PlatformBds/Generic/Capsules.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/EdkUnixPkg/Dxe/PlatformBds/Generic/Capsules.c b/EdkUnixPkg/Dxe/PlatformBds/Generic/Capsules.c new file mode 100644 index 0000000..b253166 --- /dev/null +++ b/EdkUnixPkg/Dxe/PlatformBds/Generic/Capsules.c @@ -0,0 +1,213 @@ +/*++
+
+Copyright (c) 2006, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ Capsules.c
+
+Abstract:
+
+ BDS routines to handle capsules.
+
+--*/
+
+
+#include <Common/FlashMap.h>
+
+VOID
+BdsLockFv (
+ IN EFI_CPU_IO_PROTOCOL *CpuIo,
+ IN EFI_FLASH_SUBAREA_ENTRY *FlashEntry
+ );
+
+VOID
+BdsLockFv (
+ IN EFI_CPU_IO_PROTOCOL *CpuIo,
+ IN EFI_FLASH_SUBAREA_ENTRY *FlashEntry
+ )
+{
+ EFI_FV_BLOCK_MAP_ENTRY *BlockMap;
+ EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
+ UINT64 BaseAddress;
+ UINT8 Data;
+ UINT32 BlockLength;
+ UINTN Index;
+
+ BaseAddress = FlashEntry->Base - 0x400000 + 2;
+ FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) (FlashEntry->Base));
+ BlockMap = &(FvHeader->FvBlockMap[0]);
+
+ while ((BlockMap->NumBlocks != 0) && (BlockMap->BlockLength != 0)) {
+ BlockLength = BlockMap->BlockLength;
+ for (Index = 0; Index < BlockMap->NumBlocks; Index++) {
+ CpuIo->Mem.Read (
+ CpuIo,
+ EfiCpuIoWidthUint8,
+ BaseAddress,
+ 1,
+ &Data
+ );
+ Data = (UINT8) (Data | 0x3);
+ CpuIo->Mem.Write (
+ CpuIo,
+ EfiCpuIoWidthUint8,
+ BaseAddress,
+ 1,
+ &Data
+ );
+ BaseAddress += BlockLength;
+ }
+
+ BlockMap++;
+ }
+}
+
+VOID
+BdsLockNonUpdatableFlash (
+ VOID
+ )
+{
+ EFI_FLASH_MAP_ENTRY_DATA *FlashMapEntryData;
+ EFI_PEI_HOB_POINTERS GuidHob;
+ EFI_STATUS Status;
+ EFI_CPU_IO_PROTOCOL *CpuIo;
+
+ Status = gBS->LocateProtocol (&gEfiCpuIoProtocolGuid, NULL, &CpuIo);
+ ASSERT_EFI_ERROR (Status);
+
+ GuidHob.Raw = GetHobList ();
+ while ((GuidHob.Raw = GetNextGuidHob (&gEfiFlashMapHobGuid, GuidHob.Raw)) != NULL) {
+ FlashMapEntryData = (EFI_FLASH_MAP_ENTRY_DATA *) GET_GUID_HOB_DATA (GuidHob.Guid);
+
+ //
+ // Get the variable store area
+ //
+ if ((FlashMapEntryData->AreaType == EFI_FLASH_AREA_RECOVERY_BIOS) ||
+ (FlashMapEntryData->AreaType == EFI_FLASH_AREA_MAIN_BIOS)
+ ) {
+ BdsLockFv (CpuIo, &(FlashMapEntryData->Entries[0]));
+ }
+ GuidHob.Raw = GET_NEXT_HOB (GuidHob);
+ }
+
+ return ;
+}
+
+EFI_STATUS
+ProcessCapsules (
+ EFI_BOOT_MODE BootMode
+ )
+/*++
+
+Routine Description:
+
+ This routine is called to see if there are any capsules we need to process.
+ If the boot mode is not UPDATE, then we do nothing. Otherwise find the
+ capsule HOBS and produce firmware volumes for them via the DXE service.
+ Then call the dispatcher to dispatch drivers from them. Finally, check
+ the status of the updates.
+
+Arguments:
+
+ BootMode - the current boot mode
+
+Returns:
+
+ EFI_INVALID_PARAMETER - boot mode is not correct for an update
+
+Note:
+
+ This function should be called by BDS in case we need to do some
+ sort of processing even if there is no capsule to process. We
+ need to do this if an earlier update went awry and we need to
+ clear the capsule variable so on the next reset PEI does not see it and
+ think there is a capsule available.
+
+--*/
+{
+ EFI_STATUS Status;
+ EFI_HOB_CAPSULE_VOLUME *CvHob;
+ EFI_PHYSICAL_ADDRESS BaseAddress;
+ UINT64 Length;
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
+ EFI_HANDLE FvProtocolHandle;
+
+ //
+ // We don't do anything else if the boot mode is not flash-update
+ //
+ if (BootMode != BOOT_ON_FLASH_UPDATE) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // Only one capsule HOB allowed.
+ //
+ CvHob = GetFirstHob (EFI_HOB_TYPE_CV);
+ if (CvHob == NULL) {
+ //
+ // We didn't find a hob, so had no errors.
+ //
+ BdsLockNonUpdatableFlash ();
+ return EFI_SUCCESS;
+ }
+
+ BaseAddress = CvHob->BaseAddress;
+ Length = CvHob->Length;
+
+ Status = EFI_SUCCESS;
+ //
+ // Now walk the capsule and call the core to process each
+ // firmware volume in it.
+ //
+ while (Length != 0) {
+ //
+ // Point to the next firmware volume header, and then
+ // call the DXE service to process it.
+ //
+ FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) BaseAddress;
+ if (FwVolHeader->FvLength > Length) {
+ //
+ // Notes: need to stuff this status somewhere so that the
+ // error can be detected at OS runtime
+ //
+ Status = EFI_VOLUME_CORRUPTED;
+ break;
+ }
+
+ Status = gDS->ProcessFirmwareVolume (
+ (VOID *) (UINTN) BaseAddress,
+ (UINTN) FwVolHeader->FvLength,
+ &FvProtocolHandle
+ );
+ if (EFI_ERROR (Status)) {
+ break;
+ }
+ //
+ // Call the dispatcher to dispatch any drivers from the produced firmware volume
+ //
+ gDS->Dispatch ();
+ //
+ // On to the next FV in the capsule
+ //
+ Length -= FwVolHeader->FvLength;
+ BaseAddress = (EFI_PHYSICAL_ADDRESS) ((UINTN) BaseAddress + FwVolHeader->FvLength);
+ //
+ // Notes: when capsule spec is finalized, if the requirement is made to
+ // have each FV in a capsule aligned, then we will need to align the
+ // BaseAddress and Length here.
+ //
+ }
+
+
+ BdsLockNonUpdatableFlash ();
+
+ return Status;
+}
+
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