a661e27f7a
Signed-off-by: lgao4 Reviewed-by: rsun3 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12791 6f19259b-4bc3-4df7-8a09-765794883524
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/** @file
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Capsule Library instance to update capsule image to flash.
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Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Guid/Capsule.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DxeServicesTableLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/CapsuleLib.h>
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/**
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Those capsules supported by the firmwares.
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@param CapsuleHeader Points to a capsule header.
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@retval EFI_SUCESS Input capsule is supported by firmware.
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@retval EFI_UNSUPPORTED Input capsule is not supported by the firmware.
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**/
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EFI_STATUS
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EFIAPI
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SupportCapsuleImage (
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IN EFI_CAPSULE_HEADER *CapsuleHeader
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)
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{
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if (CompareGuid (&gEfiCapsuleGuid, &CapsuleHeader->CapsuleGuid)) {
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return EFI_SUCCESS;
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}
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return EFI_UNSUPPORTED;
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}
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/**
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The firmware implements to process the capsule image.
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@param CapsuleHeader Points to a capsule header.
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@retval EFI_SUCESS Process Capsule Image successfully.
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@retval EFI_UNSUPPORTED Capsule image is not supported by the firmware.
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@retval EFI_VOLUME_CORRUPTED FV volume in the capsule is corrupted.
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@retval EFI_OUT_OF_RESOURCES Not enough memory.
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**/
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EFI_STATUS
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EFIAPI
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ProcessCapsuleImage (
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IN EFI_CAPSULE_HEADER *CapsuleHeader
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)
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{
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UINT32 Length;
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EFI_FIRMWARE_VOLUME_HEADER *FvImage;
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EFI_FIRMWARE_VOLUME_HEADER *ProcessedFvImage;
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EFI_STATUS Status;
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EFI_HANDLE FvProtocolHandle;
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UINT32 FvAlignment;
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FvImage = NULL;
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ProcessedFvImage = NULL;
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Status = EFI_SUCCESS;
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if (SupportCapsuleImage (CapsuleHeader) != EFI_SUCCESS) {
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return EFI_UNSUPPORTED;
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}
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//
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// Skip the capsule header, move to the Firware Volume
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//
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FvImage = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINT8 *) CapsuleHeader + CapsuleHeader->HeaderSize);
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Length = CapsuleHeader->CapsuleImageSize - CapsuleHeader->HeaderSize;
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while (Length != 0) {
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//
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// Point to the next firmware volume header, and then
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// call the DXE service to process it.
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//
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if (FvImage->FvLength > (UINTN) Length) {
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//
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// Notes: need to stuff this status somewhere so that the
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// error can be detected at OS runtime
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//
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Status = EFI_VOLUME_CORRUPTED;
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break;
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}
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FvAlignment = 1 << ((FvImage->Attributes & EFI_FVB2_ALIGNMENT) >> 16);
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//
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// FvAlignment must be more than 8 bytes required by FvHeader structure.
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//
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if (FvAlignment < 8) {
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FvAlignment = 8;
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}
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//
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// Check FvImage Align is required.
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//
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if (((UINTN) FvImage % FvAlignment) == 0) {
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ProcessedFvImage = FvImage;
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} else {
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//
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// Allocate new aligned buffer to store FvImage.
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//
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ProcessedFvImage = (EFI_FIRMWARE_VOLUME_HEADER *) AllocateAlignedPages ((UINTN) EFI_SIZE_TO_PAGES ((UINTN) FvImage->FvLength), (UINTN) FvAlignment);
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if (ProcessedFvImage == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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break;
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}
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CopyMem (ProcessedFvImage, FvImage, (UINTN) FvImage->FvLength);
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}
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Status = gDS->ProcessFirmwareVolume (
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(VOID *) ProcessedFvImage,
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(UINTN) ProcessedFvImage->FvLength,
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&FvProtocolHandle
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);
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if (EFI_ERROR (Status)) {
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break;
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}
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//
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// Call the dispatcher to dispatch any drivers from the produced firmware volume
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//
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gDS->Dispatch ();
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//
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// On to the next FV in the capsule
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//
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Length -= (UINT32) FvImage->FvLength;
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FvImage = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINT8 *) FvImage + FvImage->FvLength);
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}
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return Status;
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}
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