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MdeModulePkg DxeIpl: remove the hard code alignment adjustment in Decompress() 

Section data alignment should be made in the build generation.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Liming Gao 2018-01-10 13:45:58 +08:00
parent 5367f17db4
commit d40695ad82
1 changed files with 3 additions and 13 deletions
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16
MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
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@ -708,18 +708,13 @@ Decompress (
return EFI_OUT_OF_RESOURCES;
}
//
// Allocate destination buffer, extra one page for adjustment
// Allocate destination buffer
//
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize));
if (DstBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// DstBuffer still is one section. Adjust DstBuffer offset, skip EFI section header
// to make section data at page alignment.
//
DstBuffer = DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);
//
// Call decompress function
//
Status = UefiDecompress (
@ -749,16 +744,11 @@ Decompress (
// Allocate destination buffer
//
DstBufferSize = UncompressedLength;
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize));
if (DstBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Adjust DstBuffer offset, skip EFI section header
// to make section data at page alignment.
//
DstBuffer = DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);
//
// stream is not actually compressed, just encapsulated. So just copy it.
//
CopyMem (DstBuffer, CompressionSource, DstBufferSize);