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- /** @file
- Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include "UefiPayloadEntry.h"
- /**
- Allocate pages for code.
- @param[in] Pages Number of pages to be allocated.
- @return Allocated memory.
- **/
- VOID *
- AllocateCodePages (
- IN UINTN Pages
- )
- {
- VOID *Alloc;
- EFI_PEI_HOB_POINTERS Hob;
- Alloc = AllocatePages (Pages);
- if (Alloc == NULL) {
- return NULL;
- }
- // find the HOB we just created, and change the type to EfiBootServicesCode
- Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);
- while (Hob.Raw != NULL) {
- if (Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress == (UINTN)Alloc) {
- Hob.MemoryAllocation->AllocDescriptor.MemoryType = EfiBootServicesCode;
- return Alloc;
- }
- Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, GET_NEXT_HOB (Hob));
- }
- ASSERT (FALSE);
- FreePages (Alloc, Pages);
- return NULL;
- }
- /**
- Loads and relocates a PE/COFF image
- @param[in] PeCoffImage Point to a Pe/Coff image.
- @param[out] ImageAddress The image memory address after relocation.
- @param[out] ImageSize The image size.
- @param[out] EntryPoint The image entry point.
- @return EFI_SUCCESS If the image is loaded and relocated successfully.
- @return Others If the image failed to load or relocate.
- **/
- EFI_STATUS
- LoadPeCoffImage (
- IN VOID *PeCoffImage,
- OUT EFI_PHYSICAL_ADDRESS *ImageAddress,
- OUT UINT64 *ImageSize,
- OUT EFI_PHYSICAL_ADDRESS *EntryPoint
- )
- {
- RETURN_STATUS Status;
- PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
- VOID *Buffer;
- ZeroMem (&ImageContext, sizeof (ImageContext));
- ImageContext.Handle = PeCoffImage;
- ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;
- Status = PeCoffLoaderGetImageInfo (&ImageContext);
- if (EFI_ERROR (Status)) {
- ASSERT_EFI_ERROR (Status);
- return Status;
- }
- //
- // Allocate Memory for the image
- //
- Buffer = AllocateCodePages (EFI_SIZE_TO_PAGES ((UINT32)ImageContext.ImageSize));
- if (Buffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer;
- //
- // Load the image to our new buffer
- //
- Status = PeCoffLoaderLoadImage (&ImageContext);
- if (EFI_ERROR (Status)) {
- ASSERT_EFI_ERROR (Status);
- return Status;
- }
- //
- // Relocate the image in our new buffer
- //
- Status = PeCoffLoaderRelocateImage (&ImageContext);
- if (EFI_ERROR (Status)) {
- ASSERT_EFI_ERROR (Status);
- return Status;
- }
- *ImageAddress = ImageContext.ImageAddress;
- *ImageSize = ImageContext.ImageSize;
- *EntryPoint = ImageContext.EntryPoint;
- return EFI_SUCCESS;
- }
- /**
- This function searchs a given file type with a given Guid within a valid FV.
- If input Guid is NULL, will locate the first section having the given file type
- @param FvHeader A pointer to firmware volume header that contains the set of files
- to be searched.
- @param FileType File type to be searched.
- @param Guid Will ignore if it is NULL.
- @param FileHeader A pointer to the discovered file, if successful.
- @retval EFI_SUCCESS Successfully found FileType
- @retval EFI_NOT_FOUND File type can't be found.
- **/
- EFI_STATUS
- FvFindFileByTypeGuid (
- IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader,
- IN EFI_FV_FILETYPE FileType,
- IN EFI_GUID *Guid OPTIONAL,
- OUT EFI_FFS_FILE_HEADER **FileHeader
- )
- {
- EFI_PHYSICAL_ADDRESS CurrentAddress;
- EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;
- EFI_FFS_FILE_HEADER *File;
- UINT32 Size;
- EFI_PHYSICAL_ADDRESS EndOfFile;
- CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)FvHeader;
- EndOfFirmwareVolume = CurrentAddress + FvHeader->FvLength;
- //
- // Loop through the FFS files
- //
- for (EndOfFile = CurrentAddress + FvHeader->HeaderLength; ; ) {
- CurrentAddress = (EndOfFile + 7) & 0xfffffffffffffff8ULL;
- if (CurrentAddress > EndOfFirmwareVolume) {
- break;
- }
- File = (EFI_FFS_FILE_HEADER *)(UINTN)CurrentAddress;
- if (IS_FFS_FILE2 (File)) {
- Size = FFS_FILE2_SIZE (File);
- if (Size <= 0x00FFFFFF) {
- break;
- }
- } else {
- Size = FFS_FILE_SIZE (File);
- if (Size < sizeof (EFI_FFS_FILE_HEADER)) {
- break;
- }
- }
- EndOfFile = CurrentAddress + Size;
- if (EndOfFile > EndOfFirmwareVolume) {
- break;
- }
- //
- // Look for file type
- //
- if (File->Type == FileType) {
- if ((Guid == NULL) || CompareGuid (&File->Name, Guid)) {
- *FileHeader = File;
- return EFI_SUCCESS;
- }
- }
- }
- return EFI_NOT_FOUND;
- }
- /**
- This function searchs a given section type within a valid FFS file.
- @param FileHeader A pointer to the file header that contains the set of sections to
- be searched.
- @param SectionType The value of the section type to search.
- @param SectionData A pointer to the discovered section, if successful.
- @retval EFI_SUCCESS The section was found.
- @retval EFI_NOT_FOUND The section was not found.
- **/
- EFI_STATUS
- FileFindSection (
- IN EFI_FFS_FILE_HEADER *FileHeader,
- IN EFI_SECTION_TYPE SectionType,
- OUT VOID **SectionData
- )
- {
- UINT32 FileSize;
- EFI_COMMON_SECTION_HEADER *Section;
- UINT32 SectionSize;
- UINT32 Index;
- if (IS_FFS_FILE2 (FileHeader)) {
- FileSize = FFS_FILE2_SIZE (FileHeader);
- } else {
- FileSize = FFS_FILE_SIZE (FileHeader);
- }
- FileSize -= sizeof (EFI_FFS_FILE_HEADER);
- Section = (EFI_COMMON_SECTION_HEADER *)(FileHeader + 1);
- Index = 0;
- while (Index < FileSize) {
- if (Section->Type == SectionType) {
- if (IS_SECTION2 (Section)) {
- *SectionData = (VOID *)((UINT8 *)Section + sizeof (EFI_COMMON_SECTION_HEADER2));
- } else {
- *SectionData = (VOID *)((UINT8 *)Section + sizeof (EFI_COMMON_SECTION_HEADER));
- }
- return EFI_SUCCESS;
- }
- if (IS_SECTION2 (Section)) {
- SectionSize = SECTION2_SIZE (Section);
- } else {
- SectionSize = SECTION_SIZE (Section);
- }
- SectionSize = GET_OCCUPIED_SIZE (SectionSize, 4);
- ASSERT (SectionSize != 0);
- Index += SectionSize;
- Section = (EFI_COMMON_SECTION_HEADER *)((UINT8 *)Section + SectionSize);
- }
- return EFI_NOT_FOUND;
- }
- /**
- Find DXE core from FV and build DXE core HOBs.
- @param[out] DxeCoreEntryPoint DXE core entry point
- @retval EFI_SUCCESS If it completed successfully.
- @retval EFI_NOT_FOUND If it failed to load DXE FV.
- **/
- EFI_STATUS
- LoadDxeCore (
- OUT PHYSICAL_ADDRESS *DxeCoreEntryPoint
- )
- {
- EFI_STATUS Status;
- EFI_FIRMWARE_VOLUME_HEADER *PayloadFv;
- EFI_FIRMWARE_VOLUME_HEADER *DxeCoreFv;
- EFI_FFS_FILE_HEADER *FileHeader;
- VOID *PeCoffImage;
- EFI_PHYSICAL_ADDRESS ImageAddress;
- UINT64 ImageSize;
- PayloadFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdPayloadFdMemBase);
- //
- // DXE FV is inside Payload FV. Here find DXE FV from Payload FV
- //
- Status = FvFindFileByTypeGuid (PayloadFv, EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE, NULL, &FileHeader);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- Status = FileFindSection (FileHeader, EFI_SECTION_FIRMWARE_VOLUME_IMAGE, (VOID **)&DxeCoreFv);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- //
- // Report DXE FV to DXE core
- //
- BuildFvHob ((EFI_PHYSICAL_ADDRESS)(UINTN)DxeCoreFv, DxeCoreFv->FvLength);
- //
- // Find DXE core file from DXE FV
- //
- Status = FvFindFileByTypeGuid (DxeCoreFv, EFI_FV_FILETYPE_DXE_CORE, NULL, &FileHeader);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- Status = FileFindSection (FileHeader, EFI_SECTION_PE32, (VOID **)&PeCoffImage);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- //
- // Get DXE core info
- //
- Status = LoadPeCoffImage (PeCoffImage, &ImageAddress, &ImageSize, DxeCoreEntryPoint);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- BuildModuleHob (&FileHeader->Name, ImageAddress, EFI_SIZE_TO_PAGES ((UINT32)ImageSize) * EFI_PAGE_SIZE, *DxeCoreEntryPoint);
- return EFI_SUCCESS;
- }
- /**
- Find DXE core from FV and build DXE core HOBs.
- @param[in] DxeFv The FV where to find the DXE core.
- @param[out] DxeCoreEntryPoint DXE core entry point
- @retval EFI_SUCCESS If it completed successfully.
- @retval EFI_NOT_FOUND If it failed to load DXE FV.
- **/
- EFI_STATUS
- UniversalLoadDxeCore (
- IN EFI_FIRMWARE_VOLUME_HEADER *DxeFv,
- OUT PHYSICAL_ADDRESS *DxeCoreEntryPoint
- )
- {
- EFI_STATUS Status;
- EFI_FFS_FILE_HEADER *FileHeader;
- VOID *PeCoffImage;
- EFI_PHYSICAL_ADDRESS ImageAddress;
- UINT64 ImageSize;
- //
- // Find DXE core file from DXE FV
- //
- Status = FvFindFileByTypeGuid (DxeFv, EFI_FV_FILETYPE_DXE_CORE, NULL, &FileHeader);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- Status = FileFindSection (FileHeader, EFI_SECTION_PE32, (VOID **)&PeCoffImage);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- //
- // Get DXE core info
- //
- Status = LoadPeCoffImage (PeCoffImage, &ImageAddress, &ImageSize, DxeCoreEntryPoint);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- BuildModuleHob (&FileHeader->Name, ImageAddress, EFI_SIZE_TO_PAGES ((UINT32)ImageSize) * EFI_PAGE_SIZE, *DxeCoreEntryPoint);
- return EFI_SUCCESS;
- }
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