diff options
Diffstat (limited to 'OvmfPkg/Library/PeilessStartupLib/DxeLoad.c')
| -rw-r--r-- | OvmfPkg/Library/PeilessStartupLib/DxeLoad.c | 134 |
1 files changed, 133 insertions, 1 deletions
diff --git a/OvmfPkg/Library/PeilessStartupLib/DxeLoad.c b/OvmfPkg/Library/PeilessStartupLib/DxeLoad.c index 6e79c30846..4b1fefd452 100644 --- a/OvmfPkg/Library/PeilessStartupLib/DxeLoad.c +++ b/OvmfPkg/Library/PeilessStartupLib/DxeLoad.c @@ -22,6 +22,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Library/ReportStatusCodeLib.h>
#define STACK_SIZE 0x20000
+extern EFI_GUID gEfiNonCcFvGuid;
/**
Transfers control to DxeCore.
@@ -137,6 +138,133 @@ FindDxeCore ( }
/**
+ * This is a FFS_CHECK_SECTION_HOOK which is defined by caller to check
+ * if the section is an EFI_SECTION_FIRMWARE_VOLUME_IMAGE and if it is
+ * a NonCc FV.
+ *
+ * @param Section The section in which we're checking for the NonCc FV.
+ * @return EFI_STATUS The section is the NonCc FV.
+ */
+EFI_STATUS
+EFIAPI
+CheckSectionHookForDxeNonCc (
+ IN EFI_COMMON_SECTION_HEADER *Section
+ )
+{
+ VOID *Buffer;
+ EFI_STATUS Status;
+ EFI_FV_INFO FvImageInfo;
+
+ if (Section->Type != EFI_SECTION_FIRMWARE_VOLUME_IMAGE) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (IS_SECTION2 (Section)) {
+ Buffer = (VOID *)((UINT8 *)Section + sizeof (EFI_COMMON_SECTION_HEADER2));
+ } else {
+ Buffer = (VOID *)((UINT8 *)Section + sizeof (EFI_COMMON_SECTION_HEADER));
+ }
+
+ ZeroMem (&FvImageInfo, sizeof (FvImageInfo));
+ Status = FfsGetVolumeInfo ((EFI_PEI_FV_HANDLE)(UINTN)Buffer, &FvImageInfo);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_INFO, "Cannot get volume info! %r\n", Status));
+ return Status;
+ }
+
+ return CompareGuid (&FvImageInfo.FvName, &gEfiNonCcFvGuid) ? EFI_SUCCESS : EFI_NOT_FOUND;
+}
+
+/**
+ * Find the NonCc FV.
+ *
+ * @param FvInstance The FvInstance number.
+ * @return EFI_STATUS Successfuly find the NonCc FV.
+ */
+EFI_STATUS
+EFIAPI
+FindDxeNonCc (
+ IN INTN FvInstance
+ )
+{
+ EFI_STATUS Status;
+ EFI_PEI_FV_HANDLE VolumeHandle;
+ EFI_PEI_FILE_HANDLE FileHandle;
+ EFI_PEI_FV_HANDLE FvImageHandle;
+ EFI_FV_INFO FvImageInfo;
+ UINT32 FvAlignment;
+ VOID *FvBuffer;
+
+ FileHandle = NULL;
+
+ //
+ // Caller passed in a specific FV to try, so only try that one
+ //
+ Status = FfsFindNextVolume (FvInstance, &VolumeHandle);
+ ASSERT (Status == EFI_SUCCESS);
+
+ Status = FfsFindNextFile (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE, VolumeHandle, &FileHandle);
+ ASSERT (FileHandle != NULL);
+
+ //
+ // Find FvImage in FvFile
+ //
+ Status = FfsFindSectionData (EFI_SECTION_FIRMWARE_VOLUME_IMAGE, CheckSectionHookForDxeNonCc, FileHandle, (VOID **)&FvImageHandle);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Collect FvImage Info.
+ //
+ ZeroMem (&FvImageInfo, sizeof (FvImageInfo));
+ Status = FfsGetVolumeInfo (FvImageHandle, &FvImageInfo);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // FvAlignment must be more than 8 bytes required by FvHeader structure.
+ //
+ FvAlignment = 1 << ((FvImageInfo.FvAttributes & EFI_FVB2_ALIGNMENT) >> 16);
+ if (FvAlignment < 8) {
+ FvAlignment = 8;
+ }
+
+ //
+ // Check FvImage
+ //
+ if ((UINTN)FvImageInfo.FvStart % FvAlignment != 0) {
+ FvBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES ((UINT32)FvImageInfo.FvSize), FvAlignment);
+ if (FvBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ CopyMem (FvBuffer, FvImageInfo.FvStart, (UINTN)FvImageInfo.FvSize);
+ //
+ // Update FvImageInfo after reload FvImage to new aligned memory
+ //
+ FfsGetVolumeInfo ((EFI_PEI_FV_HANDLE)FvBuffer, &FvImageInfo);
+ }
+
+ //
+ // Inform HOB consumer phase, i.e. DXE core, the existence of this FV
+ //
+ BuildFvHob ((EFI_PHYSICAL_ADDRESS)(UINTN)FvImageInfo.FvStart, FvImageInfo.FvSize);
+
+ //
+ // Makes the encapsulated volume show up in DXE phase to skip processing of
+ // encapsulated file again.
+ //
+ BuildFv2Hob (
+ (EFI_PHYSICAL_ADDRESS)(UINTN)FvImageInfo.FvStart,
+ FvImageInfo.FvSize,
+ &FvImageInfo.FvName,
+ &(((EFI_FFS_FILE_HEADER *)FileHandle)->Name)
+ );
+
+ return Status;
+}
+
+/**
This function finds DXE Core in the firmware volume and transfer the control to
DXE core.
@@ -168,10 +296,14 @@ DxeLoadCore ( return Status;
}
+ if (!TdIsEnabled ()) {
+ FindDxeNonCc (FvInstance);
+ }
+
//
// Load the DXE Core from a Firmware Volume.
//
- Status = FfsFindSectionData (EFI_SECTION_PE32, FileHandle, &PeCoffImage);
+ Status = FfsFindSectionData (EFI_SECTION_PE32, NULL, FileHandle, &PeCoffImage);
if (EFI_ERROR (Status)) {
return Status;
}
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