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.
25 BOOLEAN gInMemory
= FALSE
;
28 // Module Globals used in the DXE to PEI handoff
29 // These must be module globals, so the stack can be switched
31 static EFI_DXE_IPL_PPI mDxeIplPpi
= {
35 static EFI_PEI_FV_FILE_LOADER_PPI mLoadFilePpi
= {
39 static EFI_PEI_PPI_DESCRIPTOR mPpiList
[] = {
41 EFI_PEI_PPI_DESCRIPTOR_PPI
,
42 &gEfiPeiFvFileLoaderPpiGuid
,
46 (EFI_PEI_PPI_DESCRIPTOR_PPI
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
),
52 static EFI_PEI_PPI_DESCRIPTOR mPpiSignal
= {
53 (EFI_PEI_PPI_DESCRIPTOR_PPI
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
),
54 &gEfiEndOfPeiSignalPpiGuid
,
58 GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gEfiDecompress
= {
59 UefiDecompressGetInfo
,
63 GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gTianoDecompress
= {
64 TianoDecompressGetInfo
,
68 GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gCustomDecompress
= {
69 CustomDecompressGetInfo
,
75 PeimInitializeDxeIpl (
76 IN EFI_FFS_FILE_HEADER
*FfsHeader
,
77 IN EFI_PEI_SERVICES
**PeiServices
83 Initializes the Dxe Ipl PPI
87 FfsHeader - Pointer to FFS file header
88 PeiServices - General purpose services available to every PEIM.
97 EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
;
98 EFI_BOOT_MODE BootMode
;
100 Status
= PeiServicesGetBootMode (&BootMode
);
101 ASSERT_EFI_ERROR (Status
);
103 if (!gInMemory
&& (BootMode
!= BOOT_ON_S3_RESUME
)) {
105 // The DxeIpl has not yet been shadowed
107 PeiEfiPeiPeCoffLoader
= (EFI_PEI_PE_COFF_LOADER_PROTOCOL
*)GetPeCoffLoaderProtocol ();
110 // Shadow DxeIpl and then re-run its entry point
112 Status
= ShadowDxeIpl (FfsHeader
, PeiEfiPeiPeCoffLoader
);
115 // Install FvFileLoader and DxeIpl PPIs.
117 Status
= PeiServicesInstallPpi (mPpiList
);
118 ASSERT_EFI_ERROR(Status
);
127 IN EFI_DXE_IPL_PPI
*This
,
128 IN EFI_PEI_SERVICES
**PeiServices
,
129 IN EFI_PEI_HOB_POINTERS HobList
135 Main entry point to last PEIM
138 This - Entry point for DXE IPL PPI
139 PeiServices - General purpose services available to every PEIM.
140 HobList - Address to the Pei HOB list
144 EFI_SUCCESS - DEX core was successfully loaded.
145 EFI_OUT_OF_RESOURCES - There are not enough resources to load DXE core.
150 EFI_GUID DxeCoreFileName
;
151 EFI_GUID FirmwareFileName
;
154 EFI_PHYSICAL_ADDRESS DxeCoreAddress
;
156 EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint
;
157 EFI_PEI_PE_COFF_LOADER_PROTOCOL
*PeiEfiPeiPeCoffLoader
;
158 EFI_BOOT_MODE BootMode
;
159 EFI_PEI_RECOVERY_MODULE_PPI
*PeiRecovery
;
160 EFI_PEI_S3_RESUME_PPI
*S3Resume
;
162 // PERF_START (PeiServices, L"DxeIpl", NULL, 0);
165 // if in S3 Resume, restore configure
167 Status
= PeiServicesGetBootMode (&BootMode
);
168 ASSERT_EFI_ERROR(Status
);
170 if (BootMode
== BOOT_ON_S3_RESUME
) {
171 Status
= PeiServicesLocatePpi (
172 &gEfiPeiS3ResumePpiGuid
,
177 ASSERT_EFI_ERROR (Status
);
179 Status
= S3Resume
->S3RestoreConfig (PeiServices
);
180 ASSERT_EFI_ERROR (Status
);
181 } else if (BootMode
== BOOT_IN_RECOVERY_MODE
) {
183 Status
= PeiServicesLocatePpi (
184 &gEfiPeiRecoveryModulePpiGuid
,
187 (VOID
**)&PeiRecovery
189 ASSERT_EFI_ERROR (Status
);
191 Status
= PeiRecovery
->LoadRecoveryCapsule (PeiServices
, PeiRecovery
);
192 if (EFI_ERROR (Status
)) {
193 DEBUG ((EFI_D_ERROR
, "Load Recovery Capsule Failed.(Status = %r)\n", Status
));
198 // Now should have a HOB with the DXE core w/ the old HOB destroyed
203 // Install the PEI Protocols that are shared between PEI and DXE
205 PeiEfiPeiPeCoffLoader
= (EFI_PEI_PE_COFF_LOADER_PROTOCOL
*)GetPeCoffLoaderProtocol ();
206 ASSERT (PeiEfiPeiPeCoffLoader
!= NULL
);
210 // Find the EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE type compressed Firmware Volume file
211 // The file found will be processed by PeiProcessFile: It will first be decompressed to
212 // a normal FV, then a corresponding FV type hob will be built.
214 Status
= PeiFindFile (
215 EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE
,
216 EFI_SECTION_FIRMWARE_VOLUME_IMAGE
,
222 // Find the DXE Core in a Firmware Volume
224 Status
= PeiFindFile (
225 EFI_FV_FILETYPE_DXE_CORE
,
230 ASSERT_EFI_ERROR (Status
);
233 // Load the DXE Core from a Firmware Volume
235 Status
= PeiLoadFile (
236 PeiEfiPeiPeCoffLoader
,
242 ASSERT_EFI_ERROR (Status
);
245 // Add HOB for the DXE Core
255 // Report Status Code EFI_SW_PEI_PC_HANDOFF_TO_NEXT
259 EFI_SOFTWARE_PEI_MODULE
| EFI_SW_PEI_CORE_PC_HANDOFF_TO_NEXT
262 if (FeaturePcdGet (PcdDxeIplBuildShareCodeHobs
)) {
263 if (FeaturePcdGet (PcdDxeIplSupportEfiDecompress
)) {
265 // Add HOB for the EFI Decompress Protocol
268 &gEfiDecompressProtocolGuid
,
269 (VOID
*)&gEfiDecompress
,
270 sizeof (gEfiDecompress
)
273 if (FeaturePcdGet (PcdDxeIplSupportTianoDecompress
)) {
275 // Add HOB for the Tiano Decompress Protocol
278 &gEfiTianoDecompressProtocolGuid
,
279 (VOID
*)&gTianoDecompress
,
280 sizeof (gTianoDecompress
)
283 if (FeaturePcdGet (PcdDxeIplSupportCustomDecompress
)) {
285 // Add HOB for the user customized Decompress Protocol
288 &gEfiCustomizedDecompressProtocolGuid
,
289 (VOID
*)&gCustomDecompress
,
290 sizeof (gCustomDecompress
)
295 // Add HOB for the PE/COFF Loader Protocol
298 &gEfiPeiPeCoffLoaderGuid
,
299 (VOID
*)&PeiEfiPeiPeCoffLoader
,
305 // Transfer control to the DXE Core
306 // The handoff state is simply a pointer to the HOB list
309 DEBUG ((EFI_D_INFO
, "DXE Core Entry Point 0x%08x\n", (UINTN
) DxeCoreEntryPoint
));
310 HandOffToDxeCore (DxeCoreEntryPoint
, HobList
, &mPpiSignal
);
312 // If we get here, then the DXE Core returned. This is an error
313 // Dxe Core should not return.
318 return EFI_OUT_OF_RESOURCES
;
324 IN UINT16 SectionType
,
325 OUT EFI_GUID
*FileName
,
332 Finds a PE/COFF of a specific Type and SectionType in the Firmware Volumes
333 described in the HOB list. Able to search in a compression set in a FFS file.
334 But only one level of compression is supported, that is, not able to search
335 in a compression set that is within another compression set.
339 Type - The Type of file to retrieve
341 SectionType - The type of section to retrieve from a file
343 FileName - The name of the file found in the Firmware Volume
345 Pe32Data - Pointer to the beginning of the PE/COFF file found in the Firmware Volume
349 EFI_SUCCESS - The file was found, and the name is returned in FileName, and a pointer to
350 the PE/COFF image is returned in Pe32Data
352 EFI_NOT_FOUND - The file was not found in the Firmware Volumes present in the HOB List
356 EFI_FIRMWARE_VOLUME_HEADER
*FwVolHeader
;
357 EFI_FFS_FILE_HEADER
*FfsFileHeader
;
359 EFI_PEI_HOB_POINTERS Hob
;
363 FfsFileHeader
= NULL
;
364 Status
= EFI_SUCCESS
;
367 // For each Firmware Volume, look for a specified type
368 // of file and break out until no one is found
370 Hob
.Raw
= GetHobList ();
371 while ((Hob
.Raw
= GetNextHob (EFI_HOB_TYPE_FV
, Hob
.Raw
)) != NULL
) {
372 FwVolHeader
= (EFI_FIRMWARE_VOLUME_HEADER
*) (UINTN
) (Hob
.FirmwareVolume
->BaseAddress
);
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
) (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 case EFI_CUSTOMIZED_COMPRESSION
:
799 // Load user customized compression.
801 if (FeaturePcdGet (PcdDxeIplSupportCustomDecompress
)) {
802 DecompressLibrary
= &gCustomDecompress
;
805 return EFI_NOT_FOUND
;
809 case EFI_NOT_COMPRESSED
:
811 // Allocate destination buffer
813 DstBufferSize
= CompressionSection
->UncompressedLength
;
814 DstBuffer
= AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize
));
815 if (DstBuffer
== NULL
) {
816 return EFI_OUT_OF_RESOURCES
;
819 // stream is not actually compressed, just encapsulated. So just copy it.
821 CopyMem (DstBuffer
, CompressionSection
+ 1, DstBufferSize
);
826 // Don't support other unknown compression type.
828 ASSERT_EFI_ERROR (Status
);
829 return EFI_NOT_FOUND
;
832 if (CompressionSection
->CompressionType
!= EFI_NOT_COMPRESSED
) {
834 // For compressed data, decompress them to dstbuffer.
836 Status
= DecompressLibrary
->GetInfo (
837 (UINT8
*) ((EFI_COMPRESSION_SECTION
*) Section
+ 1),
838 (UINT32
) SectionLength
- sizeof (EFI_COMPRESSION_SECTION
),
842 if (EFI_ERROR (Status
)) {
846 DEBUG ((EFI_D_ERROR
, "Decompress GetInfo Failed - %r\n", Status
));
847 return EFI_NOT_FOUND
;
851 // Allocate scratch buffer
853 ScratchBuffer
= AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize
));
854 if (ScratchBuffer
== NULL
) {
855 return EFI_OUT_OF_RESOURCES
;
859 // Allocate destination buffer
861 DstBuffer
= AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize
));
862 if (DstBuffer
== NULL
) {
863 return EFI_OUT_OF_RESOURCES
;
867 // Call decompress function
869 Status
= DecompressLibrary
->Decompress (
870 (CHAR8
*) ((EFI_COMPRESSION_SECTION
*) Section
+ 1),
874 if (EFI_ERROR (Status
)) {
878 DEBUG ((EFI_D_ERROR
, "Decompress Failed - %r\n", Status
));
879 return EFI_NOT_FOUND
;
884 // Decompress successfully.
885 // Loop the decompressed data searching for expected section.
887 CmpSection
= (EFI_COMMON_SECTION_HEADER
*) DstBuffer
;
888 CmpFileData
= (VOID
*) DstBuffer
;
889 CmpFileSize
= DstBufferSize
;
891 CmpSectionLength
= *(UINT32
*) (CmpSection
->Size
) & 0x00ffffff;
892 if (CmpSection
->Type
== SectionType
) {
894 // This is what we want
896 if (SectionType
== EFI_SECTION_PE32
) {
897 *Pe32Data
= (VOID
*) (CmpSection
+ 1);
899 } else if (SectionType
== EFI_SECTION_FIRMWARE_VOLUME_IMAGE
) {
901 // Firmware Volume Image in this Section
902 // Skip the section header to get FvHeader
904 FvHeader
= (EFI_FIRMWARE_VOLUME_HEADER
*) (CmpSection
+ 1);
906 if (FvHeader
->Signature
== EFI_FVH_SIGNATURE
) {
908 // Because FvLength in FvHeader is UINT64 type,
909 // so FvHeader must meed at least 8 bytes alignment.
910 // If current FvImage base address doesn't meet its alignment,
911 // we need to reload this FvImage to another correct memory address.
913 if (((UINTN
) FvHeader
% sizeof (UINT64
)) != 0) {
914 DstBuffer
= AllocateAlignedPages (EFI_SIZE_TO_PAGES ((UINTN
) CmpSectionLength
- sizeof (EFI_COMMON_SECTION_HEADER
)), sizeof (UINT64
));
915 if (DstBuffer
== NULL
) {
916 return EFI_OUT_OF_RESOURCES
;
918 CopyMem (DstBuffer
, FvHeader
, (UINTN
) CmpSectionLength
- sizeof (EFI_COMMON_SECTION_HEADER
));
919 FvHeader
= (EFI_FIRMWARE_VOLUME_HEADER
*) DstBuffer
;
923 // Build new FvHob for new decompressed Fv image.
925 BuildFvHob ((EFI_PHYSICAL_ADDRESS
) (UINTN
) FvHeader
, FvHeader
->FvLength
);
928 // Set the original FvHob to unused.
930 if (OrigHob
!= NULL
) {
931 OrigHob
->Header
->HobType
= EFI_HOB_TYPE_UNUSED
;
935 // return found FvImage data.
937 *Pe32Data
= (VOID
*) FvHeader
;
942 OccupiedCmpSectionLength
= GET_OCCUPIED_SIZE (CmpSectionLength
, 4);
943 CmpSection
= (EFI_COMMON_SECTION_HEADER
*) ((UINT8
*) CmpSection
+ OccupiedCmpSectionLength
);
944 } while (CmpSection
->Type
!= 0 && (UINTN
) ((UINT8
*) CmpSection
- (UINT8
*) CmpFileData
) < CmpFileSize
);
947 // End of the decompression activity
950 Section
= (EFI_COMMON_SECTION_HEADER
*) ((UINT8
*) Section
+ OccupiedSectionLength
);
951 FileSize
= FfsFileHeader
->Size
[0] & 0xFF;
952 FileSize
+= (FfsFileHeader
->Size
[1] << 8) & 0xFF00;
953 FileSize
+= (FfsFileHeader
->Size
[2] << 16) & 0xFF0000;
954 FileSize
&= 0x00FFFFFF;
955 } while (Section
->Type
!= 0 && (UINTN
) ((UINT8
*) Section
- (UINT8
*) FfsFileHeader
) < FileSize
);
958 // search all sections (compression and non compression) in this FFS, don't
959 // find expected section.
961 return EFI_NOT_FOUND
;
964 // For those FFS that doesn't contain compression section, directly search
965 // PE or TE section in this FFS.
968 Status
= PeiServicesFfsFindSectionData (
974 if (EFI_ERROR (Status
)) {
975 Status
= PeiServicesFfsFindSectionData (
980 if (EFI_ERROR (Status
)) {
986 *Pe32Data
= SectionData
;