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Cache FvImage at buffer with its required alignment.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4372 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lgao4
2007-12-07 10:25:56 +00:00
parent 069cb38f00
commit c4869732ec
4 changed files with 19 additions and 4 deletions
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20
MdeModulePkg/Core/Dxe/SectionExtraction/CoreSectionExtraction.c
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@ -412,11 +412,14 @@ Returns:
UINTN Instance;
UINT8 *CopyBuffer;
UINTN SectionSize;
EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
UINT32 FvAlignment;
OldTpl = CoreRaiseTpl (TPL_NOTIFY);
Instance = SectionInstance + 1;
FvHeader = NULL;
FvAlignment = 0;
//
// Locate target stream
//
@ -469,8 +472,19 @@ Returns:
} else {
//
// Callee allocated buffer. Allocate buffer and return size.
// For FvImage, the buffer is allocated at its required alignment.
//
*Buffer = CoreAllocateBootServicesPool (CopySize);
if (*SectionType == EFI_SECTION_FIRMWARE_VOLUME_IMAGE) {
FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) CopyBuffer;
FvAlignment = 1 << ((FvHeader->Attributes & EFI_FVB2_ALIGNMENT) >> 16);
//
// FvAlignment must be more than 8 bytes required by FvHeader structure.
//
if (FvAlignment < 8) {
FvAlignment = 8;
}
}
*Buffer = AllocateAlignedPool ((UINTN) CopySize, (UINTN) FvAlignment);
if (*Buffer == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto GetSection_Done;