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author | Star Zeng <star.zeng@intel.com> | 2013-09-16 01:50:44 +0000 |
---|---|---|
committer | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-09-16 01:50:44 +0000 |
commit | 3837e91c58d4b626a91895b68b32cb59679787e8 (patch) | |
tree | f1db89ab188b72e7d91895fcd45c9a0bdec10f2b /MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c | |
parent | 82ea59a0124ff77e9cd6f558d4cb8555eeb9ea4a (diff) | |
download | edk2-3837e91c58d4b626a91895b68b32cb59679787e8.zip edk2-3837e91c58d4b626a91895b68b32cb59679787e8.tar.gz edk2-3837e91c58d4b626a91895b68b32cb59679787e8.tar.bz2 |
MdeModulePkg: Add support for weakly aligned FVs.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14671 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c')
-rw-r--r-- | MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c | 63 |
1 files changed, 36 insertions, 27 deletions
diff --git a/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c index 75d6267..a70e2e4 100644 --- a/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c +++ b/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c @@ -1036,39 +1036,48 @@ CoreProcessFvImageFile ( //
FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) Buffer;
//
- // Get FvHeader alignment
+ // If EFI_FVB2_WEAK_ALIGNMENT is set in the volume header then the first byte of the volume
+ // can be aligned on any power-of-two boundary. A weakly aligned volume can not be moved from
+ // its initial linked location and maintain its alignment.
//
- FvAlignment = 1 << ((FvHeader->Attributes & EFI_FVB2_ALIGNMENT) >> 16);
- //
- // FvAlignment must be greater than or equal to 8 bytes of the minimum FFS alignment value.
- //
- if (FvAlignment < 8) {
- FvAlignment = 8;
- }
- //
- // Allocate the aligned buffer for the FvImage.
- //
- AlignedBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), (UINTN) FvAlignment);
- if (AlignedBuffer == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- } else {
+ if ((FvHeader->Attributes & EFI_FVB2_WEAK_ALIGNMENT) != EFI_FVB2_WEAK_ALIGNMENT) {
//
- // Move FvImage into the aligned buffer and release the original buffer.
+ // Get FvHeader alignment
//
- CopyMem (AlignedBuffer, Buffer, BufferSize);
- CoreFreePool (Buffer);
- Buffer = NULL;
+ FvAlignment = 1 << ((FvHeader->Attributes & EFI_FVB2_ALIGNMENT) >> 16);
//
- // Produce a FVB protocol for the file
+ // FvAlignment must be greater than or equal to 8 bytes of the minimum FFS alignment value.
//
- Status = ProduceFVBProtocolOnBuffer (
- (EFI_PHYSICAL_ADDRESS) (UINTN) AlignedBuffer,
- (UINT64)BufferSize,
- FvHandle,
- AuthenticationStatus,
- NULL
- );
+ if (FvAlignment < 8) {
+ FvAlignment = 8;
+ }
+ //
+ // Allocate the aligned buffer for the FvImage.
+ //
+ AlignedBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), (UINTN) FvAlignment);
+ if (AlignedBuffer == NULL) {
+ FreePool (Buffer);
+ return EFI_OUT_OF_RESOURCES;
+ } else {
+ //
+ // Move FvImage into the aligned buffer and release the original buffer.
+ //
+ CopyMem (AlignedBuffer, Buffer, BufferSize);
+ FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) AlignedBuffer;
+ CoreFreePool (Buffer);
+ Buffer = NULL;
+ }
}
+ //
+ // Produce a FVB protocol for the file
+ //
+ Status = ProduceFVBProtocolOnBuffer (
+ (EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader,
+ (UINT64)BufferSize,
+ FvHandle,
+ AuthenticationStatus,
+ NULL
+ );
}
if (EFI_ERROR (Status)) {
|