diff options
Diffstat (limited to 'StandaloneMmPkg/Core/FwVol.c')
| -rw-r--r-- | StandaloneMmPkg/Core/FwVol.c | 99 |
1 files changed, 90 insertions, 9 deletions
diff --git a/StandaloneMmPkg/Core/FwVol.c b/StandaloneMmPkg/Core/FwVol.c index 5abf98c247..d95491f252 100644 --- a/StandaloneMmPkg/Core/FwVol.c +++ b/StandaloneMmPkg/Core/FwVol.c @@ -14,6 +14,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include "StandaloneMmCore.h"
#include <Library/FvLib.h>
+#include <Library/ExtractGuidedSectionLib.h>
//
// List of file types supported by dispatcher
@@ -65,15 +66,25 @@ Returns: --*/
{
- EFI_STATUS Status;
- EFI_STATUS DepexStatus;
- EFI_FFS_FILE_HEADER *FileHeader;
- EFI_FV_FILETYPE FileType;
- VOID *Pe32Data;
- UINTN Pe32DataSize;
- VOID *Depex;
- UINTN DepexSize;
- UINTN Index;
+ EFI_STATUS Status;
+ EFI_STATUS DepexStatus;
+ EFI_FFS_FILE_HEADER *FileHeader;
+ EFI_FV_FILETYPE FileType;
+ VOID *Pe32Data;
+ UINTN Pe32DataSize;
+ VOID *Depex;
+ UINTN DepexSize;
+ UINTN Index;
+ EFI_COMMON_SECTION_HEADER *Section;
+ VOID *SectionData;
+ UINTN SectionDataSize;
+ UINT32 DstBufferSize;
+ VOID *ScratchBuffer;
+ UINT32 ScratchBufferSize;
+ VOID *DstBuffer;
+ UINT16 SectionAttribute;
+ UINT32 AuthenticationStatus;
+ EFI_FIRMWARE_VOLUME_HEADER *InnerFvHeader;
DEBUG ((DEBUG_INFO, "MmCoreFfsFindMmDriver - 0x%x\n", FwVolHeader));
@@ -83,6 +94,71 @@ Returns: FvIsBeingProcesssed (FwVolHeader);
+ //
+ // First check for encapsulated compressed firmware volumes
+ //
+ FileHeader = NULL;
+ do {
+ Status = FfsFindNextFile (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,
+ FwVolHeader, &FileHeader);
+ if (EFI_ERROR (Status)) {
+ break;
+ }
+ Status = FfsFindSectionData (EFI_SECTION_GUID_DEFINED, FileHeader,
+ &SectionData, &SectionDataSize);
+ if (EFI_ERROR (Status)) {
+ break;
+ }
+ Section = (EFI_COMMON_SECTION_HEADER *)(FileHeader + 1);
+ Status = ExtractGuidedSectionGetInfo (Section, &DstBufferSize,
+ &ScratchBufferSize, &SectionAttribute);
+ if (EFI_ERROR (Status)) {
+ break;
+ }
+
+ //
+ // Allocate scratch buffer
+ //
+ ScratchBuffer = (VOID *)(UINTN)AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));
+ if (ScratchBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Allocate destination buffer, extra one page for adjustment
+ //
+ DstBuffer = (VOID *)(UINTN)AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize));
+ if (DstBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Call decompress function
+ //
+ Status = ExtractGuidedSectionDecode (Section, &DstBuffer, ScratchBuffer,
+ &AuthenticationStatus);
+ FreePages (ScratchBuffer, EFI_SIZE_TO_PAGES (ScratchBufferSize));
+ if (EFI_ERROR (Status)) {
+ goto FreeDstBuffer;
+ }
+
+ DEBUG ((DEBUG_INFO,
+ "Processing compressed firmware volume (AuthenticationStatus == %x)\n",
+ AuthenticationStatus));
+
+ Status = FindFfsSectionInSections (DstBuffer, DstBufferSize,
+ EFI_SECTION_FIRMWARE_VOLUME_IMAGE, &Section);
+ if (EFI_ERROR (Status)) {
+ goto FreeDstBuffer;
+ }
+
+ InnerFvHeader = (VOID *)(Section + 1);
+ Status = MmCoreFfsFindMmDriver (InnerFvHeader);
+ if (EFI_ERROR (Status)) {
+ goto FreeDstBuffer;
+ }
+ } while (TRUE);
+
for (Index = 0; Index < sizeof (mMmFileTypes) / sizeof (mMmFileTypes[0]); Index++) {
DEBUG ((DEBUG_INFO, "Check MmFileTypes - 0x%x\n", mMmFileTypes[Index]));
FileType = mMmFileTypes[Index];
@@ -100,5 +176,10 @@ Returns: } while (!EFI_ERROR (Status));
}
+ return EFI_SUCCESS;
+
+FreeDstBuffer:
+ FreePages (DstBuffer, EFI_SIZE_TO_PAGES (DstBufferSize));
+
return Status;
}
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