3 Copyright (c) 2006, Intel Corporation
4 All rights reserved. This program and the accompanying materials
5 are licensed and made available under the terms and conditions of the BSD License
6 which accompanies this distribution. The full text of the license may be found at
7 http://opensource.org/licenses/bsd-license.php
9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 Responsibility of this module is to load the DXE Core from a Firmware Volume.
24 // Include common header file for this module.
26 #include "CommonHeader.h"
30 // porting note remove later
31 #include "Common/DecompressLibraryHob.h"
32 #include "FrameworkPei.h"
33 // end of remove later
35 BOOLEAN gInMemory
= FALSE
;
38 // Module Globals used in the DXE to PEI handoff
39 // These must be module globals, so the stack can be switched
41 static EFI_DXE_IPL_PPI mDxeIplPpi
= {
45 static EFI_PEI_FV_FILE_LOADER_PPI mLoadFilePpi
= {
49 static EFI_PEI_PPI_DESCRIPTOR mPpiList
[] = {
51 EFI_PEI_PPI_DESCRIPTOR_PPI
,
52 &gEfiPeiFvFileLoaderPpiGuid
,
56 (EFI_PEI_PPI_DESCRIPTOR_PPI
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
),
62 static EFI_PEI_PPI_DESCRIPTOR mPpiSignal
= {
63 (EFI_PEI_PPI_DESCRIPTOR_PPI
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
),
64 &gEfiEndOfPeiSignalPpiGuid
,
68 GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gEfiDecompress
= {
69 UefiDecompressGetInfo
,
73 GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gCustomDecompress
= {
74 CustomDecompressGetInfo
,
80 PeimInitializeDxeIpl (
81 IN EFI_FFS_FILE_HEADER
*FfsHeader
,
82 IN EFI_PEI_SERVICES
**PeiServices
88 Initializes the Dxe Ipl PPI
92 FfsHeader - Pointer to FFS file header
93 PeiServices - General purpose services available to every PEIM.
102 EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
;
103 EFI_BOOT_MODE BootMode
;
105 Status
= PeiServicesGetBootMode (&BootMode
);
106 ASSERT_EFI_ERROR (Status
);
108 if (!gInMemory
&& (BootMode
!= BOOT_ON_S3_RESUME
)) {
110 // The DxeIpl has not yet been shadowed
112 PeiEfiPeiPeCoffLoader
= (EFI_PEI_PE_COFF_LOADER_PROTOCOL
*)GetPeCoffLoaderProtocol ();
115 // Shadow DxeIpl and then re-run its entry point
117 Status
= ShadowDxeIpl (FfsHeader
, PeiEfiPeiPeCoffLoader
);
120 // Install FvFileLoader and DxeIpl PPIs.
122 Status
= PeiServicesInstallPpi (mPpiList
);
123 ASSERT_EFI_ERROR(Status
);
132 IN EFI_DXE_IPL_PPI
*This
,
133 IN EFI_PEI_SERVICES
**PeiServices
,
134 IN EFI_PEI_HOB_POINTERS HobList
140 Main entry point to last PEIM
143 This - Entry point for DXE IPL PPI
144 PeiServices - General purpose services available to every PEIM.
145 HobList - Address to the Pei HOB list
149 EFI_SUCCESS - DEX core was successfully loaded.
150 EFI_OUT_OF_RESOURCES - There are not enough resources to load DXE core.
155 EFI_GUID DxeCoreFileName
;
156 EFI_GUID FirmwareFileName
;
159 EFI_PHYSICAL_ADDRESS DxeCoreAddress
;
161 EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint
;
162 EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
;
163 EFI_BOOT_MODE BootMode
;
164 EFI_PEI_RECOVERY_MODULE_PPI
*PeiRecovery
;
165 EFI_PEI_S3_RESUME_PPI
*S3Resume
;
167 // PERF_START (PeiServices, L"DxeIpl", NULL, 0);
170 // if in S3 Resume, restore configure
172 Status
= PeiServicesGetBootMode (&BootMode
);
173 ASSERT_EFI_ERROR(Status
);
175 if (BootMode
== BOOT_ON_S3_RESUME
) {
176 Status
= PeiServicesLocatePpi (
177 &gEfiPeiS3ResumePpiGuid
,
182 ASSERT_EFI_ERROR (Status
);
184 Status
= S3Resume
->S3RestoreConfig (PeiServices
);
185 ASSERT_EFI_ERROR (Status
);
186 } else if (BootMode
== BOOT_IN_RECOVERY_MODE
) {
188 Status
= PeiServicesLocatePpi (
189 &gEfiPeiRecoveryModulePpiGuid
,
192 (VOID
**)&PeiRecovery
194 ASSERT_EFI_ERROR (Status
);
196 Status
= PeiRecovery
->LoadRecoveryCapsule (PeiServices
, PeiRecovery
);
197 if (EFI_ERROR (Status
)) {
198 DEBUG ((EFI_D_ERROR
, "Load Recovery Capsule Failed.(Status = %r)\n", Status
));
203 // Now should have a HOB with the DXE core w/ the old HOB destroyed
208 // Install the PEI Protocols that are shared between PEI and DXE
210 PeiEfiPeiPeCoffLoader
= (EFI_PEI_PE_COFF_LOADER_PROTOCOL
*)GetPeCoffLoaderProtocol ();
211 ASSERT (PeiEfiPeiPeCoffLoader
!= NULL
);
215 // Find the EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE type compressed Firmware Volume file
216 // The file found will be processed by PeiProcessFile: It will first be decompressed to
217 // a normal FV, then a corresponding FV type hob will be built.
219 Status
= PeiFindFile (
220 EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE
,
221 EFI_SECTION_FIRMWARE_VOLUME_IMAGE
,
227 // Find the DXE Core in a Firmware Volume
229 Status
= PeiFindFile (
230 EFI_FV_FILETYPE_DXE_CORE
,
235 ASSERT_EFI_ERROR (Status
);
238 // Load the DXE Core from a Firmware Volume
240 Status
= PeiLoadFile (
241 PeiEfiPeiPeCoffLoader
,
247 ASSERT_EFI_ERROR (Status
);
250 // Add HOB for the DXE Core
260 // Report Status Code EFI_SW_PEI_PC_HANDOFF_TO_NEXT
264 EFI_SOFTWARE_PEI_MODULE
| EFI_SW_PEI_CORE_PC_HANDOFF_TO_NEXT
267 if (FeaturePcdGet (PcdDxeIplBuildShareCodeHobs
)) {
268 if (FeaturePcdGet (PcdDxeIplSupportEfiDecompress
)) {
270 // Add HOB for the EFI Decompress Protocol
273 &gEfiDecompressProtocolGuid
,
274 (VOID
*)&gEfiDecompress
,
275 sizeof (gEfiDecompress
)
278 if (FeaturePcdGet (PcdDxeIplSupportCustomDecompress
)) {
280 // Add HOB for the user customized Decompress Protocol
283 &gEfiCustomizedDecompressProtocolGuid
,
284 (VOID
*)&gCustomDecompress
,
285 sizeof (gCustomDecompress
)
290 // Add HOB for the PE/COFF Loader Protocol
293 &gEfiPeiPeCoffLoaderGuid
,
294 (VOID
*)&PeiEfiPeiPeCoffLoader
,
300 // Transfer control to the DXE Core
301 // The handoff state is simply a pointer to the HOB list
304 DEBUG ((EFI_D_INFO
, "DXE Core Entry Point 0x%08x\n", (UINTN
) DxeCoreEntryPoint
));
305 HandOffToDxeCore (DxeCoreEntryPoint
, HobList
, &mPpiSignal
);
307 // If we get here, then the DXE Core returned. This is an error
308 // Dxe Core should not return.
313 return EFI_OUT_OF_RESOURCES
;
319 IN UINT16 SectionType
,
320 OUT EFI_GUID
*FileName
,
327 Finds a PE/COFF of a specific Type and SectionType in the Firmware Volumes
328 described in the HOB list. Able to search in a compression set in a FFS file.
329 But only one level of compression is supported, that is, not able to search
330 in a compression set that is within another compression set.
334 Type - The Type of file to retrieve
336 SectionType - The type of section to retrieve from a file
338 FileName - The name of the file found in the Firmware Volume
340 Pe32Data - Pointer to the beginning of the PE/COFF file found in the Firmware Volume
344 EFI_SUCCESS - The file was found, and the name is returned in FileName, and a pointer to
345 the PE/COFF image is returned in Pe32Data
347 EFI_NOT_FOUND - The file was not found in the Firmware Volumes present in the HOB List
351 EFI_FIRMWARE_VOLUME_HEADER
*FwVolHeader
;
352 EFI_FFS_FILE_HEADER
*FfsFileHeader
;
354 EFI_PEI_HOB_POINTERS Hob
;
358 FfsFileHeader
= NULL
;
359 Status
= EFI_SUCCESS
;
362 // For each Firmware Volume, look for a specified type
363 // of file and break out until no one is found
365 Hob
.Raw
= GetHobList ();
366 while ((Hob
.Raw
= GetNextHob (EFI_HOB_TYPE_FV
, Hob
.Raw
)) != NULL
) {
367 FwVolHeader
= (EFI_FIRMWARE_VOLUME_HEADER
*) (UINTN
) (Hob
.FirmwareVolume
->BaseAddress
);
369 // Make sure the FV HOB does not get corrupted.
371 ASSERT (FwVolHeader
->Signature
== EFI_FVH_SIGNATURE
);
373 Status
= PeiServicesFfsFindNextFile (
378 if (!EFI_ERROR (Status
)) {
379 Status
= PeiProcessFile (
385 CopyMem (FileName
, &FfsFileHeader
->Name
, sizeof (EFI_GUID
));
387 // Find all Fv type ffs to get all FvImage and add them into FvHob
389 if (!EFI_ERROR (Status
) && (Type
!= EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE
)) {
393 Hob
.Raw
= GET_NEXT_HOB (Hob
);
395 return EFI_NOT_FOUND
;
400 IN EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
,
402 OUT EFI_PHYSICAL_ADDRESS
*ImageAddress
,
403 OUT UINT64
*ImageSize
,
404 OUT EFI_PHYSICAL_ADDRESS
*EntryPoint
410 Loads and relocates a PE/COFF image into memory.
414 PeiEfiPeiPeCoffLoader - Pointer to a PE COFF loader protocol
416 Pe32Data - The base address of the PE/COFF file that is to be loaded and relocated
418 ImageAddress - The base address of the relocated PE/COFF image
420 ImageSize - The size of the relocated PE/COFF image
422 EntryPoint - The entry point of the relocated PE/COFF image
426 EFI_SUCCESS - The file was loaded and relocated
428 EFI_OUT_OF_RESOURCES - There was not enough memory to load and relocate the PE/COFF file
433 PE_COFF_LOADER_IMAGE_CONTEXT ImageContext
;
435 ZeroMem (&ImageContext
, sizeof (ImageContext
));
436 ImageContext
.Handle
= Pe32Data
;
437 Status
= GetImageReadFunction (&ImageContext
);
439 ASSERT_EFI_ERROR (Status
);
441 Status
= PeiEfiPeiPeCoffLoader
->GetImageInfo (PeiEfiPeiPeCoffLoader
, &ImageContext
);
442 if (EFI_ERROR (Status
)) {
446 // Allocate Memory for the image
448 ImageContext
.ImageAddress
= (EFI_PHYSICAL_ADDRESS
)(UINTN
) AllocatePages (EFI_SIZE_TO_PAGES ((UINT32
) ImageContext
.ImageSize
));
449 ASSERT (ImageContext
.ImageAddress
!= 0);
452 // Load the image to our new buffer
454 Status
= PeiEfiPeiPeCoffLoader
->LoadImage (PeiEfiPeiPeCoffLoader
, &ImageContext
);
455 if (EFI_ERROR (Status
)) {
459 // Relocate the image in our new buffer
461 Status
= PeiEfiPeiPeCoffLoader
->RelocateImage (PeiEfiPeiPeCoffLoader
, &ImageContext
);
462 if (EFI_ERROR (Status
)) {
467 // Flush the instruction cache so the image data is written before we execute it
469 InvalidateInstructionCacheRange ((VOID
*)(UINTN
)ImageContext
.ImageAddress
, (UINTN
)ImageContext
.ImageSize
);
471 *ImageAddress
= ImageContext
.ImageAddress
;
472 *ImageSize
= ImageContext
.ImageSize
;
473 *EntryPoint
= ImageContext
.EntryPoint
;
480 IN EFI_FFS_FILE_HEADER
*DxeIplFileHeader
,
481 IN EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
487 Shadow the DXE IPL to a different memory location. This occurs after permanent
488 memory has been discovered.
492 DxeIplFileHeader - Pointer to the FFS file header of the DXE IPL driver
494 PeiEfiPeiPeCoffLoader - Pointer to a PE COFF loader protocol
498 EFI_SUCCESS - DXE IPL was successfully shadowed to a different memory location.
500 EFI_ ERROR - The shadow was unsuccessful.
506 UINTN OccupiedSectionLength
;
507 EFI_PHYSICAL_ADDRESS DxeIplAddress
;
509 EFI_PHYSICAL_ADDRESS DxeIplEntryPoint
;
511 EFI_COMMON_SECTION_HEADER
*Section
;
513 Section
= (EFI_COMMON_SECTION_HEADER
*) (DxeIplFileHeader
+ 1);
515 while ((Section
->Type
!= EFI_SECTION_PE32
) && (Section
->Type
!= EFI_SECTION_TE
)) {
516 SectionLength
= *(UINT32
*) (Section
->Size
) & 0x00ffffff;
517 OccupiedSectionLength
= GET_OCCUPIED_SIZE (SectionLength
, 4);
518 Section
= (EFI_COMMON_SECTION_HEADER
*) ((UINT8
*) Section
+ OccupiedSectionLength
);
521 // Relocate DxeIpl into memory by using loadfile service
523 Status
= PeiLoadFile (
524 PeiEfiPeiPeCoffLoader
,
525 (VOID
*) (Section
+ 1),
531 if (Status
== EFI_SUCCESS
) {
533 // Set gInMemory global variable to TRUE to indicate the dxeipl is shadowed.
535 *(BOOLEAN
*) ((UINTN
) &gInMemory
+ (UINTN
) DxeIplEntryPoint
- (UINTN
) _ModuleEntryPoint
) = TRUE
;
536 Status
= ((EFI_PEIM_ENTRY_POINT
) (UINTN
) DxeIplEntryPoint
) ((EFI_PEI_FILE_HANDLE
*) DxeIplFileHeader
, GetPeiServicesTablePointer());
545 IN EFI_PEI_FV_FILE_LOADER_PPI
*This
,
546 IN EFI_FFS_FILE_HEADER
*FfsHeader
,
547 OUT EFI_PHYSICAL_ADDRESS
*ImageAddress
,
548 OUT UINT64
*ImageSize
,
549 OUT EFI_PHYSICAL_ADDRESS
*EntryPoint
555 Given a pointer to an FFS file containing a PE32 image, get the
556 information on the PE32 image, and then "load" it so that it
561 This - pointer to our file loader protocol
563 FfsHeader - pointer to the FFS file header of the FFS file that
564 contains the PE32 image we want to load
566 ImageAddress - returned address where the PE32 image is loaded
568 ImageSize - returned size of the loaded PE32 image
570 EntryPoint - entry point to the loaded PE32 image
574 EFI_SUCCESS - The FFS file was successfully loaded.
576 EFI_ERROR - Unable to load the FFS file.
580 EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
;
585 PeiEfiPeiPeCoffLoader
= (EFI_PEI_PE_COFF_LOADER_PROTOCOL
*)GetPeCoffLoaderProtocol ();
588 // Preprocess the FFS file to get a pointer to the PE32 information
589 // in the enclosed PE32 image.
591 Status
= PeiProcessFile (
598 if (EFI_ERROR (Status
)) {
602 // Load the PE image from the FFS file
604 Status
= PeiLoadFile (
605 PeiEfiPeiPeCoffLoader
,
617 IN UINT16 SectionType
,
618 IN EFI_FFS_FILE_HEADER
*FfsFileHeader
,
620 IN EFI_PEI_HOB_POINTERS
*OrigHob
628 SectionType - The type of section in the FFS file to process.
630 FfsFileHeader - Pointer to the FFS file to process, looking for the
631 specified SectionType
633 Pe32Data - returned pointer to the start of the PE32 image found
638 EFI_SUCCESS - found the PE32 section in the FFS file
644 DECOMPRESS_LIBRARY
*DecompressLibrary
;
646 UINT8
*ScratchBuffer
;
647 UINT32 DstBufferSize
;
648 UINT32 ScratchBufferSize
;
649 EFI_COMMON_SECTION_HEADER
*CmpSection
;
650 UINTN CmpSectionLength
;
651 UINTN OccupiedCmpSectionLength
;
654 EFI_COMMON_SECTION_HEADER
*Section
;
656 UINTN OccupiedSectionLength
;
658 UINT32 AuthenticationStatus
;
659 EFI_PEI_SECTION_EXTRACTION_PPI
*SectionExtract
;
662 EFI_PEI_SECURITY_PPI
*Security
;
663 BOOLEAN StartCrisisRecovery
;
665 EFI_FIRMWARE_VOLUME_HEADER
*FvHeader
;
666 EFI_COMPRESSION_SECTION
*CompressionSection
;
669 // Initialize local variables.
671 DecompressLibrary
= NULL
;
675 Status
= PeiServicesFfsFindSectionData (
676 EFI_SECTION_COMPRESSION
,
682 // First process the compression section
684 if (!EFI_ERROR (Status
)) {
686 // Yes, there is a compression section, so extract the contents
687 // Decompress the image here
689 Section
= (EFI_COMMON_SECTION_HEADER
*) (UINTN
) (VOID
*) ((UINT8
*) (FfsFileHeader
) + (UINTN
) sizeof (EFI_FFS_FILE_HEADER
));
692 SectionLength
= *(UINT32
*) (Section
->Size
) & 0x00ffffff;
693 OccupiedSectionLength
= GET_OCCUPIED_SIZE (SectionLength
, 4);
696 // Was the DXE Core file encapsulated in a GUID'd section?
698 if (Section
->Type
== EFI_SECTION_GUID_DEFINED
) {
701 // This following code constitutes the addition of the security model
705 // Set a default authenticatino state
707 AuthenticationStatus
= 0;
709 Status
= PeiServicesLocatePpi (
710 &gEfiPeiSectionExtractionPpiGuid
,
713 (VOID
**)&SectionExtract
716 if (EFI_ERROR (Status
)) {
720 // Verify Authentication State
722 CopyMem (&TempGuid
, Section
+ 1, sizeof (EFI_GUID
));
724 Status
= SectionExtract
->PeiGetSection (
725 GetPeiServicesTablePointer(),
727 (EFI_SECTION_TYPE
*) &SectionType
,
732 &AuthenticationStatus
735 if (EFI_ERROR (Status
)) {
739 // If not ask the Security PPI, if exists, for disposition
742 Status
= PeiServicesLocatePpi (
743 &gEfiPeiSecurityPpiGuid
,
748 if (EFI_ERROR (Status
)) {
752 Status
= Security
->AuthenticationState (
753 GetPeiServicesTablePointer(),
754 (struct _EFI_PEI_SECURITY_PPI
*) Security
,
755 AuthenticationStatus
,
760 if (EFI_ERROR (Status
)) {
764 // If there is a security violation, report to caller and have
765 // the upper-level logic possible engender a crisis recovery
767 if (StartCrisisRecovery
) {
768 return EFI_SECURITY_VIOLATION
;
772 if (Section
->Type
== EFI_SECTION_PE32
) {
774 // This is what we want
776 *Pe32Data
= (VOID
*) (Section
+ 1);
778 } else if (Section
->Type
== EFI_SECTION_COMPRESSION
) {
780 // This is a compression set, expand it
782 CompressionSection
= (EFI_COMPRESSION_SECTION
*) Section
;
784 switch (CompressionSection
->CompressionType
) {
785 case EFI_STANDARD_COMPRESSION
:
787 // Load EFI standard compression.
789 if (FeaturePcdGet (PcdDxeIplSupportTianoDecompress
)) {
790 DecompressLibrary
= &gEfiDecompress
;
793 return EFI_NOT_FOUND
;
797 // porting note the original branch for customized compress is removed, it should be change to use GUID compress
799 case EFI_NOT_COMPRESSED
:
801 // Allocate destination buffer
803 DstBufferSize
= CompressionSection
->UncompressedLength
;
804 DstBuffer
= AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize
));
805 if (DstBuffer
== NULL
) {
806 return EFI_OUT_OF_RESOURCES
;
809 // stream is not actually compressed, just encapsulated. So just copy it.
811 CopyMem (DstBuffer
, CompressionSection
+ 1, DstBufferSize
);
816 // Don't support other unknown compression type.
818 ASSERT_EFI_ERROR (Status
);
819 return EFI_NOT_FOUND
;
822 if (CompressionSection
->CompressionType
!= EFI_NOT_COMPRESSED
) {
824 // For compressed data, decompress them to dstbuffer.
826 Status
= DecompressLibrary
->GetInfo (
827 (UINT8
*) ((EFI_COMPRESSION_SECTION
*) Section
+ 1),
828 (UINT32
) SectionLength
- sizeof (EFI_COMPRESSION_SECTION
),
832 if (EFI_ERROR (Status
)) {
836 DEBUG ((EFI_D_ERROR
, "Decompress GetInfo Failed - %r\n", Status
));
837 return EFI_NOT_FOUND
;
841 // Allocate scratch buffer
843 ScratchBuffer
= AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize
));
844 if (ScratchBuffer
== NULL
) {
845 return EFI_OUT_OF_RESOURCES
;
849 // Allocate destination buffer
851 DstBuffer
= AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize
));
852 if (DstBuffer
== NULL
) {
853 return EFI_OUT_OF_RESOURCES
;
857 // Call decompress function
859 Status
= DecompressLibrary
->Decompress (
860 (CHAR8
*) ((EFI_COMPRESSION_SECTION
*) Section
+ 1),
864 if (EFI_ERROR (Status
)) {
868 DEBUG ((EFI_D_ERROR
, "Decompress Failed - %r\n", Status
));
869 return EFI_NOT_FOUND
;
874 // Decompress successfully.
875 // Loop the decompressed data searching for expected section.
877 CmpSection
= (EFI_COMMON_SECTION_HEADER
*) DstBuffer
;
878 CmpFileData
= (VOID
*) DstBuffer
;
879 CmpFileSize
= DstBufferSize
;
881 CmpSectionLength
= *(UINT32
*) (CmpSection
->Size
) & 0x00ffffff;
882 if (CmpSection
->Type
== SectionType
) {
884 // This is what we want
886 if (SectionType
== EFI_SECTION_PE32
) {
887 *Pe32Data
= (VOID
*) (CmpSection
+ 1);
889 } else if (SectionType
== EFI_SECTION_FIRMWARE_VOLUME_IMAGE
) {
891 // Firmware Volume Image in this Section
892 // Skip the section header to get FvHeader
894 FvHeader
= (EFI_FIRMWARE_VOLUME_HEADER
*) (CmpSection
+ 1);
896 if (FvHeader
->Signature
== EFI_FVH_SIGNATURE
) {
898 // Because FvLength in FvHeader is UINT64 type,
899 // so FvHeader must meed at least 8 bytes alignment.
900 // If current FvImage base address doesn't meet its alignment,
901 // we need to reload this FvImage to another correct memory address.
903 if (((UINTN
) FvHeader
% sizeof (UINT64
)) != 0) {
904 DstBuffer
= AllocateAlignedPages (EFI_SIZE_TO_PAGES ((UINTN
) CmpSectionLength
- sizeof (EFI_COMMON_SECTION_HEADER
)), sizeof (UINT64
));
905 if (DstBuffer
== NULL
) {
906 return EFI_OUT_OF_RESOURCES
;
908 CopyMem (DstBuffer
, FvHeader
, (UINTN
) CmpSectionLength
- sizeof (EFI_COMMON_SECTION_HEADER
));
909 FvHeader
= (EFI_FIRMWARE_VOLUME_HEADER
*) DstBuffer
;
913 // Build new FvHob for new decompressed Fv image.
915 BuildFvHob ((EFI_PHYSICAL_ADDRESS
) (UINTN
) FvHeader
, FvHeader
->FvLength
);
918 // Set the original FvHob to unused.
920 if (OrigHob
!= NULL
) {
921 OrigHob
->Header
->HobType
= EFI_HOB_TYPE_UNUSED
;
925 // return found FvImage data.
927 *Pe32Data
= (VOID
*) FvHeader
;
932 OccupiedCmpSectionLength
= GET_OCCUPIED_SIZE (CmpSectionLength
, 4);
933 CmpSection
= (EFI_COMMON_SECTION_HEADER
*) ((UINT8
*) CmpSection
+ OccupiedCmpSectionLength
);
934 } while (CmpSection
->Type
!= 0 && (UINTN
) ((UINT8
*) CmpSection
- (UINT8
*) CmpFileData
) < CmpFileSize
);
937 // End of the decompression activity
940 Section
= (EFI_COMMON_SECTION_HEADER
*) ((UINT8
*) Section
+ OccupiedSectionLength
);
941 FileSize
= FfsFileHeader
->Size
[0] & 0xFF;
942 FileSize
+= (FfsFileHeader
->Size
[1] << 8) & 0xFF00;
943 FileSize
+= (FfsFileHeader
->Size
[2] << 16) & 0xFF0000;
944 FileSize
&= 0x00FFFFFF;
945 } while (Section
->Type
!= 0 && (UINTN
) ((UINT8
*) Section
- (UINT8
*) FfsFileHeader
) < FileSize
);
948 // search all sections (compression and non compression) in this FFS, don't
949 // find expected section.
951 return EFI_NOT_FOUND
;
954 // For those FFS that doesn't contain compression section, directly search
955 // PE or TE section in this FFS.
958 Status
= PeiServicesFfsFindSectionData (
964 if (EFI_ERROR (Status
)) {
965 Status
= PeiServicesFfsFindSectionData (
970 if (EFI_ERROR (Status
)) {
976 *Pe32Data
= SectionData
;