| /*++ | |
| Copyright (c) 2006, Intel Corporation | |
| All rights reserved. This program and the accompanying materials | |
| are licensed and made available under the terms and conditions of the BSD License | |
| which accompanies this distribution. The full text of the license may be found at | |
| http://opensource.org/licenses/bsd-license.php | |
| THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| Module Name: | |
| DxeLoad.c | |
| Abstract: | |
| Last PEIM. | |
| Responsibility of this module is to load the DXE Core from a Firmware Volume. | |
| --*/ | |
| #include <DxeIpl.h> | |
| #pragma warning( disable : 4305 ) | |
| BOOLEAN gInMemory = FALSE; | |
| // | |
| // GUID for EM64T | |
| // | |
| #define EFI_PPI_NEEDED_BY_DXE \ | |
| { \ | |
| 0x4d37da42, 0x3a0c, 0x4eda, 0xb9, 0xeb, 0xbc, 0x0e, 0x1d, 0xb4, 0x71, 0x3b \ | |
| } | |
| EFI_GUID mPpiNeededByDxeGuid = EFI_PPI_NEEDED_BY_DXE; | |
| // | |
| // Module Globals used in the DXE to PEI handoff | |
| // These must be module globals, so the stack can be switched | |
| // | |
| static EFI_DXE_IPL_PPI mDxeIplPpi = { | |
| DxeLoadCore | |
| }; | |
| static EFI_PEI_FV_FILE_LOADER_PPI mLoadFilePpi = { | |
| DxeIplLoadFile | |
| }; | |
| static EFI_PEI_PPI_DESCRIPTOR mPpiLoadFile = { | |
| (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), | |
| &gEfiPeiFvFileLoaderPpiGuid, | |
| &mLoadFilePpi | |
| }; | |
| static EFI_PEI_PPI_DESCRIPTOR mPpiList = { | |
| (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), | |
| &gEfiDxeIplPpiGuid, | |
| &mDxeIplPpi | |
| }; | |
| static EFI_PEI_PPI_DESCRIPTOR mPpiPeiInMemory = { | |
| (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), | |
| &gPeiInMemoryGuid, | |
| NULL | |
| }; | |
| static EFI_PEI_PPI_DESCRIPTOR mPpiSignal = { | |
| (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), | |
| &gEfiEndOfPeiSignalPpiGuid, | |
| NULL | |
| }; | |
| DECOMPRESS_LIBRARY gEfiDecompress = { | |
| UefiDecompressGetInfo, | |
| UefiDecompress | |
| }; | |
| DECOMPRESS_LIBRARY gTianoDecompress = { | |
| TianoDecompressGetInfo, | |
| TianoDecompress | |
| }; | |
| DECOMPRESS_LIBRARY gCustomDecompress = { | |
| CustomDecompressGetInfo, | |
| CustomDecompress | |
| }; | |
| STATIC | |
| UINTN | |
| GetOccupiedSize ( | |
| IN UINTN ActualSize, | |
| IN UINTN Alignment | |
| ) | |
| { | |
| UINTN OccupiedSize; | |
| OccupiedSize = ActualSize; | |
| while ((OccupiedSize & (Alignment - 1)) != 0) { | |
| OccupiedSize++; | |
| } | |
| return OccupiedSize; | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| PeimInitializeDxeIpl ( | |
| IN EFI_FFS_FILE_HEADER *FfsHeader, | |
| IN EFI_PEI_SERVICES **PeiServices | |
| ) | |
| /*++ | |
| Routine Description: | |
| Initializes the Dxe Ipl PPI | |
| Arguments: | |
| FfsHeader - Pointer to FFS file header | |
| PeiServices - General purpose services available to every PEIM. | |
| Returns: | |
| EFI_SUCCESS | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader; | |
| EFI_BOOT_MODE BootMode; | |
| Status = PeiServicesGetBootMode (&BootMode); | |
| ASSERT_EFI_ERROR (Status); | |
| Status = PeiServicesLocatePpi ( | |
| &gPeiInMemoryGuid, | |
| 0, | |
| NULL, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status) && (BootMode != BOOT_ON_S3_RESUME)) { | |
| // | |
| // The DxeIpl has not yet been shadowed | |
| // | |
| PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderProtocol (); | |
| // | |
| // Shadow DxeIpl and then re-run its entry point | |
| // | |
| Status = ShadowDxeIpl (FfsHeader, PeiEfiPeiPeCoffLoader); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| } else { | |
| if (BootMode != BOOT_ON_S3_RESUME) { | |
| // | |
| // The DxeIpl has been shadowed | |
| // | |
| gInMemory = TRUE; | |
| // | |
| // Install LoadFile PPI | |
| // | |
| Status = PeiServicesInstallPpi (&mPpiLoadFile); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| } | |
| // | |
| // Install DxeIpl PPI | |
| // | |
| PeiServicesInstallPpi (&mPpiList); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| DxeLoadCore ( | |
| IN EFI_DXE_IPL_PPI *This, | |
| IN EFI_PEI_SERVICES **PeiServices, | |
| IN EFI_PEI_HOB_POINTERS HobList | |
| ) | |
| /*++ | |
| Routine Description: | |
| Main entry point to last PEIM | |
| Arguments: | |
| This - Entry point for DXE IPL PPI | |
| PeiServices - General purpose services available to every PEIM. | |
| HobList - Address to the Pei HOB list | |
| Returns: | |
| EFI_SUCCESS - DEX core was successfully loaded. | |
| EFI_OUT_OF_RESOURCES - There are not enough resources to load DXE core. | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| EFI_PHYSICAL_ADDRESS TopOfStack; | |
| EFI_PHYSICAL_ADDRESS BaseOfStack; | |
| EFI_PHYSICAL_ADDRESS BspStore; | |
| EFI_GUID DxeCoreFileName; | |
| VOID *DxeCorePe32Data; | |
| EFI_PHYSICAL_ADDRESS DxeCoreAddress; | |
| UINT64 DxeCoreSize; | |
| EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint; | |
| EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader; | |
| EFI_BOOT_MODE BootMode; | |
| EFI_PEI_RECOVERY_MODULE_PPI *PeiRecovery; | |
| EFI_PEI_S3_RESUME_PPI *S3Resume; | |
| EFI_PHYSICAL_ADDRESS PageTables; | |
| TopOfStack = 0; | |
| BaseOfStack = 0; | |
| BspStore = 0; | |
| Status = EFI_SUCCESS; | |
| // | |
| // if in S3 Resume, restore configure | |
| // | |
| Status = PeiServicesGetBootMode (&BootMode); | |
| if (!EFI_ERROR (Status) && (BootMode == BOOT_ON_S3_RESUME)) { | |
| Status = PeiServicesLocatePpi ( | |
| &gEfiPeiS3ResumePpiGuid, | |
| 0, | |
| NULL, | |
| (VOID **)&S3Resume | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| Status = S3Resume->S3RestoreConfig (PeiServices); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| Status = EFI_SUCCESS; | |
| // | |
| // Install the PEI Protocols that are shared between PEI and DXE | |
| // | |
| #ifdef EFI_NT_EMULATOR | |
| PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderProtocol (); | |
| ASSERT (PeiEfiPeiPeCoffLoader != NULL); | |
| #else | |
| PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderX64Protocol (); | |
| #endif | |
| #if 0 | |
| Status = InstallEfiPeiPeCoffLoader64 (PeiServices, &PeiEfiPeiPeCoffLoader, NULL); | |
| ASSERT_EFI_ERROR (Status); | |
| #endif | |
| // | |
| // Allocate 128KB for the Stack | |
| // | |
| PeiServicesAllocatePages (EfiBootServicesData, EFI_SIZE_TO_PAGES (STACK_SIZE), &BaseOfStack); | |
| ASSERT (BaseOfStack != 0); | |
| // | |
| // Compute the top of the stack we were allocated. Pre-allocate a 32 bytes | |
| // for safety (PpisNeededByDxe and DxeCore). | |
| // | |
| TopOfStack = BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - 32; | |
| // | |
| // Add architecture-specifc HOBs (including the BspStore HOB) | |
| // | |
| Status = CreateArchSpecificHobs (&BspStore); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // See if we are in crisis recovery | |
| // | |
| Status = PeiServicesGetBootMode (&BootMode); | |
| if (!EFI_ERROR (Status) && (BootMode == BOOT_IN_RECOVERY_MODE)) { | |
| Status = PeiServicesLocatePpi ( | |
| &gEfiPeiRecoveryModulePpiGuid, | |
| 0, | |
| NULL, | |
| (VOID **)&PeiRecovery | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| Status = PeiRecovery->LoadRecoveryCapsule (PeiServices, PeiRecovery); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| // | |
| // Find the DXE Core in a Firmware Volume | |
| // | |
| Status = PeiFindFile ( | |
| EFI_FV_FILETYPE_DXE_CORE, | |
| EFI_SECTION_PE32, | |
| &DxeCoreFileName, | |
| &DxeCorePe32Data | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // Transfer control to the DXE Core | |
| // The handoff state is simply a pointer to the HOB list | |
| // | |
| // PEI_PERF_END (PeiServices, L"DxeIpl", NULL, 0); | |
| Status = PeiServicesInstallPpi (&mPpiSignal); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // Load the GDT of Go64. Since the GDT of 32-bit Tiano locates in the BS_DATA \ | |
| // memory, it may be corrupted when copying FV to high-end memory | |
| LoadGo64Gdt(); | |
| // | |
| // Limit to 36 bits of addressing for debug. Should get it from CPU | |
| // | |
| PageTables = CreateIdentityMappingPageTables (36); | |
| // | |
| // Load the DXE Core from a Firmware Volume | |
| // | |
| Status = PeiLoadx64File ( | |
| PeiEfiPeiPeCoffLoader, | |
| DxeCorePe32Data, | |
| EfiBootServicesData, | |
| &DxeCoreAddress, | |
| &DxeCoreSize, | |
| &DxeCoreEntryPoint | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // | |
| // Add HOB for the DXE Core | |
| // | |
| BuildModuleHob ( | |
| &DxeCoreFileName, | |
| DxeCoreAddress, | |
| DxeCoreSize, | |
| DxeCoreEntryPoint | |
| ); | |
| // | |
| // Report Status Code EFI_SW_PEI_PC_HANDOFF_TO_NEXT | |
| // | |
| REPORT_STATUS_CODE ( | |
| EFI_PROGRESS_CODE, | |
| EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_CORE_PC_HANDOFF_TO_NEXT | |
| ); | |
| DEBUG ((EFI_D_INFO, "DXE Core Entry\n")); | |
| // | |
| // Go to Long Mode. Interrupts will not get turned on until the CPU AP is loaded. | |
| // Call x64 drivers passing in single argument, a pointer to the HOBs. | |
| // | |
| ActivateLongMode ( | |
| PageTables, | |
| (EFI_PHYSICAL_ADDRESS)(UINTN)(HobList.Raw), | |
| TopOfStack, | |
| 0x00000000, | |
| DxeCoreEntryPoint | |
| ); | |
| // | |
| // If we get here, then the DXE Core returned. This is an error | |
| // | |
| ASSERT_EFI_ERROR (Status); | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| EFI_STATUS | |
| PeiFindFile ( | |
| IN UINT8 Type, | |
| IN UINT16 SectionType, | |
| OUT EFI_GUID *FileName, | |
| OUT VOID **Pe32Data | |
| ) | |
| /*++ | |
| Routine Description: | |
| Finds a PE/COFF of a specific Type and SectionType in the Firmware Volumes | |
| described in the HOB list. Able to search in a compression set in a FFS file. | |
| But only one level of compression is supported, that is, not able to search | |
| in a compression set that is within another compression set. | |
| Arguments: | |
| Type - The Type of file to retrieve | |
| SectionType - The type of section to retrieve from a file | |
| FileName - The name of the file found in the Firmware Volume | |
| Pe32Data - Pointer to the beginning of the PE/COFF file found in the Firmware Volume | |
| Returns: | |
| EFI_SUCCESS - The file was found, and the name is returned in FileName, and a pointer to | |
| the PE/COFF image is returned in Pe32Data | |
| EFI_NOT_FOUND - The file was not found in the Firmware Volumes present in the HOB List | |
| --*/ | |
| { | |
| EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader; | |
| EFI_FFS_FILE_HEADER *FfsFileHeader; | |
| VOID *SectionData; | |
| EFI_STATUS Status; | |
| EFI_PEI_HOB_POINTERS Hob; | |
| FwVolHeader = NULL; | |
| FfsFileHeader = NULL; | |
| SectionData = NULL; | |
| // | |
| // Foreach Firmware Volume, look for a specified type | |
| // of file and break out when one is found | |
| // | |
| Hob.Raw = GetHobList (); | |
| while ((Hob.Raw = GetNextHob (EFI_HOB_TYPE_FV, Hob.Raw)) != NULL) { | |
| FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) (Hob.FirmwareVolume->BaseAddress); | |
| Status = PeiServicesFfsFindNextFile ( | |
| Type, | |
| FwVolHeader, | |
| &FfsFileHeader | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| Status = PeiProcessFile ( | |
| SectionType, | |
| &FfsFileHeader, | |
| Pe32Data | |
| ); | |
| CopyMem (FileName, &FfsFileHeader->Name, sizeof (EFI_GUID)); | |
| return Status; | |
| } | |
| Hob.Raw = GET_NEXT_HOB (Hob); | |
| } | |
| return EFI_NOT_FOUND; | |
| } | |
| EFI_STATUS | |
| PeiLoadx64File ( | |
| IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader, | |
| IN VOID *Pe32Data, | |
| IN EFI_MEMORY_TYPE MemoryType, | |
| OUT EFI_PHYSICAL_ADDRESS *ImageAddress, | |
| OUT UINT64 *ImageSize, | |
| OUT EFI_PHYSICAL_ADDRESS *EntryPoint | |
| ) | |
| /*++ | |
| Routine Description: | |
| Loads and relocates a PE/COFF image into memory. | |
| Arguments: | |
| PeiEfiPeiPeCoffLoader - Pointer to a PE COFF loader protocol | |
| Pe32Data - The base address of the PE/COFF file that is to be loaded and relocated | |
| ImageAddress - The base address of the relocated PE/COFF image | |
| ImageSize - The size of the relocated PE/COFF image | |
| EntryPoint - The entry point of the relocated PE/COFF image | |
| Returns: | |
| EFI_SUCCESS - The file was loaded and relocated | |
| EFI_OUT_OF_RESOURCES - There was not enough memory to load and relocate the PE/COFF file | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| PE_COFF_LOADER_IMAGE_CONTEXT ImageContext; | |
| EFI_PHYSICAL_ADDRESS MemoryBuffer; | |
| ZeroMem (&ImageContext, sizeof (ImageContext)); | |
| ImageContext.Handle = Pe32Data; | |
| Status = GetImageReadFunction (&ImageContext); | |
| ASSERT_EFI_ERROR (Status); | |
| Status = PeiEfiPeiPeCoffLoader->GetImageInfo (PeiEfiPeiPeCoffLoader, &ImageContext); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Allocate Memory for the image | |
| // | |
| // | |
| // Allocate Memory for the image | |
| // | |
| PeiServicesAllocatePages (MemoryType, EFI_SIZE_TO_PAGES ((UINT32) ImageContext.ImageSize), &MemoryBuffer); | |
| ImageContext.ImageAddress = MemoryBuffer; | |
| ASSERT (ImageContext.ImageAddress != 0); | |
| // | |
| // Load the image to our new buffer | |
| // | |
| Status = PeiEfiPeiPeCoffLoader->LoadImage (PeiEfiPeiPeCoffLoader, &ImageContext); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Relocate the image in our new buffer | |
| // | |
| Status = PeiEfiPeiPeCoffLoader->RelocateImage (PeiEfiPeiPeCoffLoader, &ImageContext); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Flush the instruction cache so the image data is written before we execute it | |
| // | |
| InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize); | |
| *ImageAddress = ImageContext.ImageAddress; | |
| *ImageSize = ImageContext.ImageSize; | |
| *EntryPoint = ImageContext.EntryPoint; | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| ShadowDxeIpl ( | |
| IN EFI_FFS_FILE_HEADER *DxeIplFileHeader, | |
| IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader | |
| ) | |
| /*++ | |
| Routine Description: | |
| Shadow the DXE IPL to a different memory location. This occurs after permanent | |
| memory has been discovered. | |
| Arguments: | |
| DxeIplFileHeader - Pointer to the FFS file header of the DXE IPL driver | |
| PeiEfiPeiPeCoffLoader - Pointer to a PE COFF loader protocol | |
| Returns: | |
| EFI_SUCCESS - DXE IPL was successfully shadowed to a different memory location. | |
| EFI_ ERROR - The shadow was unsuccessful. | |
| --*/ | |
| { | |
| UINTN SectionLength; | |
| UINTN OccupiedSectionLength; | |
| EFI_PHYSICAL_ADDRESS DxeIplAddress; | |
| UINT64 DxeIplSize; | |
| EFI_PHYSICAL_ADDRESS DxeIplEntryPoint; | |
| EFI_STATUS Status; | |
| EFI_COMMON_SECTION_HEADER *Section; | |
| Section = (EFI_COMMON_SECTION_HEADER *) (DxeIplFileHeader + 1); | |
| while ((Section->Type != EFI_SECTION_PE32) && (Section->Type != EFI_SECTION_TE)) { | |
| SectionLength = *(UINT32 *) (Section->Size) & 0x00ffffff; | |
| OccupiedSectionLength = GetOccupiedSize (SectionLength, 4); | |
| Section = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) Section + OccupiedSectionLength); | |
| } | |
| // | |
| // Relocate DxeIpl into memory by using loadfile service | |
| // | |
| Status = PeiLoadx64File ( | |
| PeiEfiPeiPeCoffLoader, | |
| (VOID *) (Section + 1), | |
| EfiBootServicesData, | |
| &DxeIplAddress, | |
| &DxeIplSize, | |
| &DxeIplEntryPoint | |
| ); | |
| if (Status == EFI_SUCCESS) { | |
| // | |
| // Install PeiInMemory to indicate the Dxeipl is shadowed | |
| // | |
| Status = PeiServicesInstallPpi (&mPpiPeiInMemory); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| Status = ((EFI_PEIM_ENTRY_POINT) (UINTN) DxeIplEntryPoint) (DxeIplFileHeader, GetPeiServicesTablePointer()); | |
| } | |
| return Status; | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| DxeIplLoadFile ( | |
| IN EFI_PEI_FV_FILE_LOADER_PPI *This, | |
| IN EFI_FFS_FILE_HEADER *FfsHeader, | |
| OUT EFI_PHYSICAL_ADDRESS *ImageAddress, | |
| OUT UINT64 *ImageSize, | |
| OUT EFI_PHYSICAL_ADDRESS *EntryPoint | |
| ) | |
| /*++ | |
| Routine Description: | |
| Given a pointer to an FFS file containing a PE32 image, get the | |
| information on the PE32 image, and then "load" it so that it | |
| can be executed. | |
| Arguments: | |
| This - pointer to our file loader protocol | |
| FfsHeader - pointer to the FFS file header of the FFS file that | |
| contains the PE32 image we want to load | |
| ImageAddress - returned address where the PE32 image is loaded | |
| ImageSize - returned size of the loaded PE32 image | |
| EntryPoint - entry point to the loaded PE32 image | |
| Returns: | |
| EFI_SUCCESS - The FFS file was successfully loaded. | |
| EFI_ERROR - Unable to load the FFS file. | |
| --*/ | |
| { | |
| EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader; | |
| EFI_STATUS Status; | |
| VOID *Pe32Data; | |
| Pe32Data = NULL; | |
| PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderProtocol (); | |
| // | |
| // Preprocess the FFS file to get a pointer to the PE32 information | |
| // in the enclosed PE32 image. | |
| // | |
| Status = PeiProcessFile ( | |
| EFI_SECTION_PE32, | |
| &FfsHeader, | |
| &Pe32Data | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Load the PE image from the FFS file | |
| // | |
| Status = PeiLoadx64File ( | |
| PeiEfiPeiPeCoffLoader, | |
| Pe32Data, | |
| EfiBootServicesData, | |
| ImageAddress, | |
| ImageSize, | |
| EntryPoint | |
| ); | |
| return Status; | |
| } | |
| EFI_STATUS | |
| PeiProcessFile ( | |
| IN UINT16 SectionType, | |
| IN OUT EFI_FFS_FILE_HEADER **RealFfsFileHeader, | |
| OUT VOID **Pe32Data | |
| ) | |
| /*++ | |
| Routine Description: | |
| Arguments: | |
| SectionType - The type of section in the FFS file to process. | |
| FfsFileHeader - Pointer to the FFS file to process, looking for the | |
| specified SectionType | |
| Pe32Data - returned pointer to the start of the PE32 image found | |
| in the FFS file. | |
| Returns: | |
| EFI_SUCCESS - found the PE32 section in the FFS file | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| VOID *SectionData; | |
| DECOMPRESS_LIBRARY *DecompressLibrary; | |
| UINT8 *DstBuffer; | |
| UINT8 *ScratchBuffer; | |
| UINT32 DstBufferSize; | |
| UINT32 ScratchBufferSize; | |
| EFI_COMMON_SECTION_HEADER *CmpSection; | |
| UINTN CmpSectionLength; | |
| UINTN OccupiedCmpSectionLength; | |
| VOID *CmpFileData; | |
| UINTN CmpFileSize; | |
| EFI_COMMON_SECTION_HEADER *Section; | |
| UINTN SectionLength; | |
| UINTN OccupiedSectionLength; | |
| UINT64 FileSize; | |
| EFI_GUID_DEFINED_SECTION *GuidedSectionHeader; | |
| UINT32 AuthenticationStatus; | |
| EFI_PEI_SECTION_EXTRACTION_PPI *SectionExtract; | |
| UINT32 BufferSize; | |
| UINT8 *Buffer; | |
| EFI_PEI_SECURITY_PPI *Security; | |
| BOOLEAN StartCrisisRecovery; | |
| EFI_GUID TempGuid; | |
| EFI_FIRMWARE_VOLUME_HEADER *FvHeader; | |
| EFI_COMPRESSION_SECTION *CompressionSection; | |
| EFI_FFS_FILE_HEADER *FfsFileHeader; | |
| FfsFileHeader = *RealFfsFileHeader; | |
| Status = PeiServicesFfsFindSectionData ( | |
| EFI_SECTION_COMPRESSION, | |
| FfsFileHeader, | |
| &SectionData | |
| ); | |
| // | |
| // Upon finding a DXE Core file, see if there is first a compression section | |
| // | |
| if (!EFI_ERROR (Status)) { | |
| // | |
| // Yes, there is a compression section, so extract the contents | |
| // Decompress the image here | |
| // | |
| Section = (EFI_COMMON_SECTION_HEADER *) (UINTN) (VOID *) ((UINT8 *) (FfsFileHeader) + (UINTN) sizeof (EFI_FFS_FILE_HEADER)); | |
| do { | |
| SectionLength = *(UINT32 *) (Section->Size) & 0x00ffffff; | |
| OccupiedSectionLength = GetOccupiedSize (SectionLength, 4); | |
| // | |
| // Was the DXE Core file encapsulated in a GUID'd section? | |
| // | |
| if (Section->Type == EFI_SECTION_GUID_DEFINED) { | |
| // | |
| // Locate the GUID'd Section Extractor | |
| // | |
| GuidedSectionHeader = (VOID *) (Section + 1); | |
| // | |
| // This following code constitutes the addition of the security model | |
| // to the DXE IPL. | |
| // | |
| // | |
| // Set a default authenticatino state | |
| // | |
| AuthenticationStatus = 0; | |
| Status = PeiServicesLocatePpi ( | |
| &gEfiPeiSectionExtractionPpiGuid, | |
| 0, | |
| NULL, | |
| (VOID **)&SectionExtract | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Verify Authentication State | |
| // | |
| CopyMem (&TempGuid, Section + 1, sizeof (EFI_GUID)); | |
| Status = SectionExtract->PeiGetSection ( | |
| GetPeiServicesTablePointer(), | |
| SectionExtract, | |
| (EFI_SECTION_TYPE *) &SectionType, | |
| &TempGuid, | |
| 0, | |
| (VOID **) &Buffer, | |
| &BufferSize, | |
| &AuthenticationStatus | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // If not ask the Security PPI, if exists, for disposition | |
| // | |
| // | |
| Status = PeiServicesLocatePpi ( | |
| &gEfiPeiSecurityPpiGuid, | |
| 0, | |
| NULL, | |
| (VOID **)&Security | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| Status = Security->AuthenticationState ( | |
| GetPeiServicesTablePointer(), | |
| (struct _EFI_PEI_SECURITY_PPI *) Security, | |
| AuthenticationStatus, | |
| FfsFileHeader, | |
| &StartCrisisRecovery | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // If there is a security violation, report to caller and have | |
| // the upper-level logic possible engender a crisis recovery | |
| // | |
| if (StartCrisisRecovery) { | |
| return EFI_SECURITY_VIOLATION; | |
| } | |
| } | |
| if (Section->Type == EFI_SECTION_PE32) { | |
| // | |
| // This is what we want | |
| // | |
| *Pe32Data = (VOID *) (Section + 1); | |
| return EFI_SUCCESS; | |
| } else if (Section->Type == EFI_SECTION_COMPRESSION) { | |
| // | |
| // This is a compression set, expand it | |
| // | |
| CompressionSection = (EFI_COMPRESSION_SECTION *) Section; | |
| switch (CompressionSection->CompressionType) { | |
| case EFI_STANDARD_COMPRESSION: | |
| DecompressLibrary = &gTianoDecompress; | |
| break; | |
| case EFI_CUSTOMIZED_COMPRESSION: | |
| // | |
| // Load user customized compression protocol. | |
| // | |
| DecompressLibrary = &gCustomDecompress; | |
| break; | |
| case EFI_NOT_COMPRESSED: | |
| default: | |
| // | |
| // Need to support not compressed file | |
| // | |
| ASSERT_EFI_ERROR (Status); | |
| return EFI_NOT_FOUND; | |
| } | |
| Status = DecompressLibrary->GetInfo ( | |
| (UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1), | |
| (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION), | |
| &DstBufferSize, | |
| &ScratchBufferSize | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| // | |
| // GetInfo failed | |
| // | |
| return EFI_NOT_FOUND; | |
| } | |
| // | |
| // Allocate scratch buffer | |
| // | |
| ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize)); | |
| if (ScratchBuffer == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| // | |
| // Allocate destination buffer | |
| // | |
| DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize)); | |
| if (DstBuffer == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| // | |
| // Call decompress function | |
| // | |
| Status = DecompressLibrary->Decompress ( | |
| (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1), | |
| DstBuffer, | |
| ScratchBuffer | |
| ); | |
| CmpSection = (EFI_COMMON_SECTION_HEADER *) DstBuffer; | |
| if (CmpSection->Type == EFI_SECTION_RAW) { | |
| // | |
| // Skip the section header and | |
| // adjust the pointer alignment to 16 | |
| // | |
| FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (DstBuffer + 16); | |
| if (FvHeader->Signature == EFI_FVH_SIGNATURE) { | |
| FfsFileHeader = NULL; | |
| BuildFvHob ((EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader, FvHeader->FvLength); | |
| Status = PeiServicesFfsFindNextFile ( | |
| EFI_FV_FILETYPE_DXE_CORE, | |
| FvHeader, | |
| &FfsFileHeader | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return EFI_NOT_FOUND; | |
| } | |
| // | |
| // Reture the FfsHeader that contain Pe32Data. | |
| // | |
| *RealFfsFileHeader = FfsFileHeader; | |
| return PeiProcessFile (SectionType, RealFfsFileHeader, Pe32Data); | |
| } | |
| } | |
| // | |
| // Decompress successfully. | |
| // Loop the decompressed data searching for expected section. | |
| // | |
| CmpFileData = (VOID *) DstBuffer; | |
| CmpFileSize = DstBufferSize; | |
| do { | |
| CmpSectionLength = *(UINT32 *) (CmpSection->Size) & 0x00ffffff; | |
| if (CmpSection->Type == EFI_SECTION_PE32) { | |
| // | |
| // This is what we want | |
| // | |
| *Pe32Data = (VOID *) (CmpSection + 1); | |
| return EFI_SUCCESS; | |
| } | |
| OccupiedCmpSectionLength = GetOccupiedSize (CmpSectionLength, 4); | |
| CmpSection = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) CmpSection + OccupiedCmpSectionLength); | |
| } while (CmpSection->Type != 0 && (UINTN) ((UINT8 *) CmpSection - (UINT8 *) CmpFileData) < CmpFileSize); | |
| } | |
| Section = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) Section + OccupiedSectionLength); | |
| FileSize = FfsFileHeader->Size[0] & 0xFF; | |
| FileSize += (FfsFileHeader->Size[1] << 8) & 0xFF00; | |
| FileSize += (FfsFileHeader->Size[2] << 16) & 0xFF0000; | |
| FileSize &= 0x00FFFFFF; | |
| } while (Section->Type != 0 && (UINTN) ((UINT8 *) Section - (UINT8 *) FfsFileHeader) < FileSize); | |
| // | |
| // End of the decompression activity | |
| // | |
| } else { | |
| Status = PeiServicesFfsFindSectionData ( | |
| EFI_SECTION_PE32, | |
| FfsFileHeader, | |
| &SectionData | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| Status = PeiServicesFfsFindSectionData ( | |
| EFI_SECTION_TE, | |
| FfsFileHeader, | |
| &SectionData | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| } | |
| } | |
| *Pe32Data = SectionData; | |
| return EFI_SUCCESS; | |
| } |