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Add PcdDxeIplSupportUefiDecompress usage into DxeIpl to save space 

if UEFI decompression is not needed to find the DXE Core.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8190 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2009-04-27 18:26:15 +00:00
parent 72670d3e4c
commit 873b7997ef
2 changed files with 55 additions and 48 deletions
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3
MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
View File

@ -91,6 +91,9 @@
[FeaturePcd.IA32]
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
[FeaturePcd.common]
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSupportUefiDecompress
[FixedPcd.common]
gEfiMdePkgTokenSpaceGuid.PcdStatusCodeValuePeiHandoffToDxe

100
MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
View File

@ -586,58 +586,62 @@ Decompress (
//
switch (CompressionSection->CompressionType) {
case EFI_STANDARD_COMPRESSION:
//
// Load EFI standard compression.
// For compressed data, decompress them to destination buffer.
//
Status = UefiDecompressGetInfo (
(UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),
(UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION),
(UINT32 *) &DstBufferSize,
&ScratchBufferSize
);
if (EFI_ERROR (Status)) {
if (FeaturePcdGet(PcdDxeIplSupportUefiDecompress)) {
//
// GetInfo failed
// Load EFI standard compression.
// For compressed data, decompress them to destination buffer.
//
DEBUG ((DEBUG_ERROR, "Decompress GetInfo Failed - %r\n", Status));
Status = UefiDecompressGetInfo (
(UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),
(UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION),
(UINT32 *) &DstBufferSize,
&ScratchBufferSize
);
if (EFI_ERROR (Status)) {
//
// GetInfo failed
//
DEBUG ((DEBUG_ERROR, "Decompress GetInfo Failed - %r\n", Status));
return EFI_NOT_FOUND;
}
//
// Allocate scratch buffer
//
ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));
if (ScratchBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Allocate destination buffer, extra one page for adjustment
//
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);
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 (
(CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),
DstBuffer,
ScratchBuffer
);
if (EFI_ERROR (Status)) {
//
// Decompress failed
//
DEBUG ((DEBUG_ERROR, "Decompress Failed - %r\n", Status));
return EFI_NOT_FOUND;
}
break;
} else {
return EFI_NOT_FOUND;
}
//
// Allocate scratch buffer
//
ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));
if (ScratchBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Allocate destination buffer, extra one page for adjustment
//
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);
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 (
(CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),
DstBuffer,
ScratchBuffer
);
if (EFI_ERROR (Status)) {
//
// Decompress failed
//
DEBUG ((DEBUG_ERROR, "Decompress Failed - %r\n", Status));
return EFI_NOT_FOUND;
}
break;
case EFI_NOT_COMPRESSED:
//