EFI uses the PE binary format for its application images. Add support to EFI PE binaries as well as all necessary bits for the "EFI image loader" interfaces. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>master
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/*
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* EFI application loader |
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* |
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* Copyright (c) 2016 Alexander Graf |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <part_efi.h> |
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#include <efi_api.h> |
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#include <linux/list.h> |
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extern const efi_guid_t efi_guid_device_path; |
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extern const efi_guid_t efi_guid_loaded_image; |
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efi_status_t efi_return_handle(void *handle, |
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efi_guid_t *protocol, void **protocol_interface, |
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void *agent_handle, void *controller_handle, |
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uint32_t attributes); |
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void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info); |
@ -0,0 +1,263 @@ |
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/*
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* Portable Executable binary format structures |
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* |
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* Copyright (c) 2016 Alexander Graf |
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* |
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* Based on wine code |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef _PE_H |
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#define _PE_H |
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typedef struct _IMAGE_DOS_HEADER { |
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uint16_t e_magic; /* 00: MZ Header signature */ |
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uint16_t e_cblp; /* 02: Bytes on last page of file */ |
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uint16_t e_cp; /* 04: Pages in file */ |
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uint16_t e_crlc; /* 06: Relocations */ |
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uint16_t e_cparhdr; /* 08: Size of header in paragraphs */ |
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uint16_t e_minalloc; /* 0a: Minimum extra paragraphs needed */ |
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uint16_t e_maxalloc; /* 0c: Maximum extra paragraphs needed */ |
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uint16_t e_ss; /* 0e: Initial (relative) SS value */ |
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uint16_t e_sp; /* 10: Initial SP value */ |
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uint16_t e_csum; /* 12: Checksum */ |
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uint16_t e_ip; /* 14: Initial IP value */ |
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uint16_t e_cs; /* 16: Initial (relative) CS value */ |
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uint16_t e_lfarlc; /* 18: File address of relocation table */ |
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uint16_t e_ovno; /* 1a: Overlay number */ |
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uint16_t e_res[4]; /* 1c: Reserved words */ |
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uint16_t e_oemid; /* 24: OEM identifier (for e_oeminfo) */ |
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uint16_t e_oeminfo; /* 26: OEM information; e_oemid specific */ |
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uint16_t e_res2[10]; /* 28: Reserved words */ |
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uint32_t e_lfanew; /* 3c: Offset to extended header */ |
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} IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER; |
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#define IMAGE_DOS_SIGNATURE 0x5A4D /* MZ */ |
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#define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */ |
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#define IMAGE_FILE_MACHINE_ARM 0x01c0 |
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#define IMAGE_FILE_MACHINE_THUMB 0x01c2 |
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#define IMAGE_FILE_MACHINE_ARMNT 0x01c4 |
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#define IMAGE_FILE_MACHINE_AMD64 0x8664 |
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#define IMAGE_FILE_MACHINE_ARM64 0xaa64 |
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#define IMAGE_NT_OPTIONAL_HDR32_MAGIC 0x10b |
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#define IMAGE_NT_OPTIONAL_HDR64_MAGIC 0x20b |
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#define IMAGE_SUBSYSTEM_EFI_APPLICATION 10 |
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typedef struct _IMAGE_FILE_HEADER { |
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uint16_t Machine; |
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uint16_t NumberOfSections; |
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uint32_t TimeDateStamp; |
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uint32_t PointerToSymbolTable; |
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uint32_t NumberOfSymbols; |
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uint16_t SizeOfOptionalHeader; |
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uint16_t Characteristics; |
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} IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER; |
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typedef struct _IMAGE_DATA_DIRECTORY { |
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uint32_t VirtualAddress; |
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uint32_t Size; |
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} IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY; |
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#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16 |
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typedef struct _IMAGE_OPTIONAL_HEADER64 { |
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uint16_t Magic; /* 0x20b */ |
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uint8_t MajorLinkerVersion; |
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uint8_t MinorLinkerVersion; |
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uint32_t SizeOfCode; |
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uint32_t SizeOfInitializedData; |
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uint32_t SizeOfUninitializedData; |
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uint32_t AddressOfEntryPoint; |
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uint32_t BaseOfCode; |
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uint64_t ImageBase; |
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uint32_t SectionAlignment; |
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uint32_t FileAlignment; |
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uint16_t MajorOperatingSystemVersion; |
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uint16_t MinorOperatingSystemVersion; |
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uint16_t MajorImageVersion; |
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uint16_t MinorImageVersion; |
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uint16_t MajorSubsystemVersion; |
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uint16_t MinorSubsystemVersion; |
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uint32_t Win32VersionValue; |
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uint32_t SizeOfImage; |
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uint32_t SizeOfHeaders; |
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uint32_t CheckSum; |
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uint16_t Subsystem; |
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uint16_t DllCharacteristics; |
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uint64_t SizeOfStackReserve; |
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uint64_t SizeOfStackCommit; |
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uint64_t SizeOfHeapReserve; |
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uint64_t SizeOfHeapCommit; |
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uint32_t LoaderFlags; |
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uint32_t NumberOfRvaAndSizes; |
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IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES]; |
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} IMAGE_OPTIONAL_HEADER64, *PIMAGE_OPTIONAL_HEADER64; |
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typedef struct _IMAGE_NT_HEADERS64 { |
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uint32_t Signature; |
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IMAGE_FILE_HEADER FileHeader; |
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IMAGE_OPTIONAL_HEADER64 OptionalHeader; |
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} IMAGE_NT_HEADERS64, *PIMAGE_NT_HEADERS64; |
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typedef struct _IMAGE_OPTIONAL_HEADER { |
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/* Standard fields */ |
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uint16_t Magic; /* 0x10b or 0x107 */ /* 0x00 */ |
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uint8_t MajorLinkerVersion; |
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uint8_t MinorLinkerVersion; |
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uint32_t SizeOfCode; |
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uint32_t SizeOfInitializedData; |
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uint32_t SizeOfUninitializedData; |
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uint32_t AddressOfEntryPoint; /* 0x10 */ |
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uint32_t BaseOfCode; |
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uint32_t BaseOfData; |
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/* NT additional fields */ |
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uint32_t ImageBase; |
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uint32_t SectionAlignment; /* 0x20 */ |
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uint32_t FileAlignment; |
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uint16_t MajorOperatingSystemVersion; |
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uint16_t MinorOperatingSystemVersion; |
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uint16_t MajorImageVersion; |
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uint16_t MinorImageVersion; |
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uint16_t MajorSubsystemVersion; /* 0x30 */ |
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uint16_t MinorSubsystemVersion; |
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uint32_t Win32VersionValue; |
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uint32_t SizeOfImage; |
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uint32_t SizeOfHeaders; |
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uint32_t CheckSum; /* 0x40 */ |
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uint16_t Subsystem; |
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uint16_t DllCharacteristics; |
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uint32_t SizeOfStackReserve; |
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uint32_t SizeOfStackCommit; |
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uint32_t SizeOfHeapReserve; /* 0x50 */ |
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uint32_t SizeOfHeapCommit; |
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uint32_t LoaderFlags; |
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uint32_t NumberOfRvaAndSizes; |
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IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES]; /* 0x60 */ |
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/* 0xE0 */ |
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} IMAGE_OPTIONAL_HEADER32, *PIMAGE_OPTIONAL_HEADER32; |
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typedef struct _IMAGE_NT_HEADERS { |
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uint32_t Signature; /* "PE"\0\0 */ /* 0x00 */ |
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IMAGE_FILE_HEADER FileHeader; /* 0x04 */ |
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IMAGE_OPTIONAL_HEADER32 OptionalHeader; /* 0x18 */ |
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} IMAGE_NT_HEADERS32, *PIMAGE_NT_HEADERS32; |
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#define IMAGE_SIZEOF_SHORT_NAME 8 |
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typedef struct _IMAGE_SECTION_HEADER { |
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uint8_t Name[IMAGE_SIZEOF_SHORT_NAME]; |
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union { |
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uint32_t PhysicalAddress; |
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uint32_t VirtualSize; |
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} Misc; |
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uint32_t VirtualAddress; |
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uint32_t SizeOfRawData; |
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uint32_t PointerToRawData; |
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uint32_t PointerToRelocations; |
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uint32_t PointerToLinenumbers; |
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uint16_t NumberOfRelocations; |
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uint16_t NumberOfLinenumbers; |
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uint32_t Characteristics; |
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} IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER; |
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#define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 |
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typedef struct _IMAGE_BASE_RELOCATION |
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{ |
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uint32_t VirtualAddress; |
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uint32_t SizeOfBlock; |
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/* WORD TypeOffset[1]; */ |
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} IMAGE_BASE_RELOCATION,*PIMAGE_BASE_RELOCATION; |
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typedef struct _IMAGE_RELOCATION |
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{ |
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union { |
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uint32_t VirtualAddress; |
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uint32_t RelocCount; |
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} DUMMYUNIONNAME; |
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uint32_t SymbolTableIndex; |
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uint16_t Type; |
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} IMAGE_RELOCATION, *PIMAGE_RELOCATION; |
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#define IMAGE_SIZEOF_RELOCATION 10 |
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/* generic relocation types */ |
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#define IMAGE_REL_BASED_ABSOLUTE 0 |
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#define IMAGE_REL_BASED_HIGH 1 |
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#define IMAGE_REL_BASED_LOW 2 |
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#define IMAGE_REL_BASED_HIGHLOW 3 |
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#define IMAGE_REL_BASED_HIGHADJ 4 |
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#define IMAGE_REL_BASED_MIPS_JMPADDR 5 |
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#define IMAGE_REL_BASED_ARM_MOV32A 5 /* yes, 5 too */ |
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#define IMAGE_REL_BASED_ARM_MOV32 5 /* yes, 5 too */ |
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#define IMAGE_REL_BASED_SECTION 6 |
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#define IMAGE_REL_BASED_REL 7 |
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#define IMAGE_REL_BASED_ARM_MOV32T 7 /* yes, 7 too */ |
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#define IMAGE_REL_BASED_THUMB_MOV32 7 /* yes, 7 too */ |
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#define IMAGE_REL_BASED_MIPS_JMPADDR16 9 |
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#define IMAGE_REL_BASED_IA64_IMM64 9 /* yes, 9 too */ |
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#define IMAGE_REL_BASED_DIR64 10 |
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#define IMAGE_REL_BASED_HIGH3ADJ 11 |
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/* ARM relocation types */ |
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#define IMAGE_REL_ARM_ABSOLUTE 0x0000 |
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#define IMAGE_REL_ARM_ADDR 0x0001 |
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#define IMAGE_REL_ARM_ADDR32NB 0x0002 |
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#define IMAGE_REL_ARM_BRANCH24 0x0003 |
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#define IMAGE_REL_ARM_BRANCH11 0x0004 |
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#define IMAGE_REL_ARM_TOKEN 0x0005 |
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#define IMAGE_REL_ARM_GPREL12 0x0006 |
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#define IMAGE_REL_ARM_GPREL7 0x0007 |
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#define IMAGE_REL_ARM_BLX24 0x0008 |
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#define IMAGE_REL_ARM_BLX11 0x0009 |
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#define IMAGE_REL_ARM_SECTION 0x000E |
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#define IMAGE_REL_ARM_SECREL 0x000F |
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#define IMAGE_REL_ARM_MOV32A 0x0010 |
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#define IMAGE_REL_ARM_MOV32T 0x0011 |
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#define IMAGE_REL_ARM_BRANCH20T 0x0012 |
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#define IMAGE_REL_ARM_BRANCH24T 0x0014 |
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#define IMAGE_REL_ARM_BLX23T 0x0015 |
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/* ARM64 relocation types */ |
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#define IMAGE_REL_ARM64_ABSOLUTE 0x0000 |
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#define IMAGE_REL_ARM64_ADDR32 0x0001 |
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#define IMAGE_REL_ARM64_ADDR32NB 0x0002 |
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#define IMAGE_REL_ARM64_BRANCH26 0x0003 |
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#define IMAGE_REL_ARM64_PAGEBASE_REL21 0x0004 |
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#define IMAGE_REL_ARM64_REL21 0x0005 |
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#define IMAGE_REL_ARM64_PAGEOFFSET_12A 0x0006 |
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#define IMAGE_REL_ARM64_PAGEOFFSET_12L 0x0007 |
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#define IMAGE_REL_ARM64_SECREL 0x0008 |
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#define IMAGE_REL_ARM64_SECREL_LOW12A 0x0009 |
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#define IMAGE_REL_ARM64_SECREL_HIGH12A 0x000A |
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#define IMAGE_REL_ARM64_SECREL_LOW12L 0x000B |
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#define IMAGE_REL_ARM64_TOKEN 0x000C |
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#define IMAGE_REL_ARM64_SECTION 0x000D |
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#define IMAGE_REL_ARM64_ADDR64 0x000E |
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/* AMD64 relocation types */ |
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#define IMAGE_REL_AMD64_ABSOLUTE 0x0000 |
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#define IMAGE_REL_AMD64_ADDR64 0x0001 |
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#define IMAGE_REL_AMD64_ADDR32 0x0002 |
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#define IMAGE_REL_AMD64_ADDR32NB 0x0003 |
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#define IMAGE_REL_AMD64_REL32 0x0004 |
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#define IMAGE_REL_AMD64_REL32_1 0x0005 |
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#define IMAGE_REL_AMD64_REL32_2 0x0006 |
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#define IMAGE_REL_AMD64_REL32_3 0x0007 |
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#define IMAGE_REL_AMD64_REL32_4 0x0008 |
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#define IMAGE_REL_AMD64_REL32_5 0x0009 |
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#define IMAGE_REL_AMD64_SECTION 0x000A |
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#define IMAGE_REL_AMD64_SECREL 0x000B |
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#define IMAGE_REL_AMD64_SECREL7 0x000C |
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#define IMAGE_REL_AMD64_TOKEN 0x000D |
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#define IMAGE_REL_AMD64_SREL32 0x000E |
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#define IMAGE_REL_AMD64_PAIR 0x000F |
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#define IMAGE_REL_AMD64_SSPAN32 0x0010 |
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#endif /* _PE_H */ |
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/*
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* EFI image loader |
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* |
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* based partly on wine code |
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* |
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* Copyright (c) 2016 Alexander Graf |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <efi_loader.h> |
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#include <pe.h> |
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#include <asm/global_data.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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const efi_guid_t efi_guid_device_path = DEVICE_PATH_GUID; |
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const efi_guid_t efi_guid_loaded_image = LOADED_IMAGE_GUID; |
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efi_status_t EFIAPI efi_return_handle(void *handle, efi_guid_t *protocol, |
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void **protocol_interface, void *agent_handle, |
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void *controller_handle, uint32_t attributes) |
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{ |
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EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, |
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protocol_interface, agent_handle, controller_handle, |
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attributes); |
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*protocol_interface = handle; |
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return EFI_EXIT(EFI_SUCCESS); |
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} |
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static void efi_loader_relocate(const IMAGE_BASE_RELOCATION *rel, |
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unsigned long rel_size, void *efi_reloc) |
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{ |
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const IMAGE_BASE_RELOCATION *end; |
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int i; |
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end = (const IMAGE_BASE_RELOCATION *)((const char *)rel + rel_size); |
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while (rel < end - 1 && rel->SizeOfBlock) { |
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const uint16_t *relocs = (const uint16_t *)(rel + 1); |
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i = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(uint16_t); |
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while (i--) { |
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uint16_t offset = (*relocs & 0xfff) + |
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rel->VirtualAddress; |
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int type = *relocs >> EFI_PAGE_SHIFT; |
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unsigned long delta = (unsigned long)efi_reloc; |
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uint64_t *x64 = efi_reloc + offset; |
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uint32_t *x32 = efi_reloc + offset; |
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uint16_t *x16 = efi_reloc + offset; |
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switch (type) { |
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case IMAGE_REL_BASED_ABSOLUTE: |
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break; |
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case IMAGE_REL_BASED_HIGH: |
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*x16 += ((uint32_t)delta) >> 16; |
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break; |
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case IMAGE_REL_BASED_LOW: |
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*x16 += (uint16_t)delta; |
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break; |
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case IMAGE_REL_BASED_HIGHLOW: |
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*x32 += (uint32_t)delta; |
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break; |
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case IMAGE_REL_BASED_DIR64: |
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*x64 += (uint64_t)delta; |
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break; |
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default: |
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printf("Unknown Relocation off %x type %x\n", |
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offset, type); |
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} |
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relocs++; |
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} |
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rel = (const IMAGE_BASE_RELOCATION *)relocs; |
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} |
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} |
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void __weak invalidate_icache_all(void) |
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{ |
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/* If the system doesn't support icache_all flush, cross our fingers */ |
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} |
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/*
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* This function loads all sections from a PE binary into a newly reserved |
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* piece of memory. On successful load it then returns the entry point for |
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* the binary. Otherwise NULL. |
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*/ |
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void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info) |
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{ |
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IMAGE_NT_HEADERS32 *nt; |
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IMAGE_DOS_HEADER *dos; |
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IMAGE_SECTION_HEADER *sections; |
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int num_sections; |
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void *efi_reloc; |
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int i; |
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const IMAGE_BASE_RELOCATION *rel; |
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unsigned long rel_size; |
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int rel_idx = IMAGE_DIRECTORY_ENTRY_BASERELOC; |
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void *entry; |
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uint64_t image_size; |
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unsigned long virt_size = 0; |
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bool can_run_nt64 = true; |
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bool can_run_nt32 = true; |
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#if defined(CONFIG_ARM64) |
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can_run_nt32 = false; |
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#elif defined(CONFIG_ARM) |
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can_run_nt64 = false; |
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#endif |
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dos = efi; |
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if (dos->e_magic != IMAGE_DOS_SIGNATURE) { |
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printf("%s: Invalid DOS Signature\n", __func__); |
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return NULL; |
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} |
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nt = (void *) ((char *)efi + dos->e_lfanew); |
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if (nt->Signature != IMAGE_NT_SIGNATURE) { |
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printf("%s: Invalid NT Signature\n", __func__); |
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return NULL; |
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} |
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/* Calculate upper virtual address boundary */ |
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num_sections = nt->FileHeader.NumberOfSections; |
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sections = (void *)&nt->OptionalHeader + |
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nt->FileHeader.SizeOfOptionalHeader; |
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for (i = num_sections - 1; i >= 0; i--) { |
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IMAGE_SECTION_HEADER *sec = §ions[i]; |
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virt_size = max_t(unsigned long, virt_size, |
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sec->VirtualAddress + sec->Misc.VirtualSize); |
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} |
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/* Read 32/64bit specific header bits */ |
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if (can_run_nt64 && |
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(nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)) { |
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IMAGE_NT_HEADERS64 *nt64 = (void *)nt; |
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IMAGE_OPTIONAL_HEADER64 *opt = &nt64->OptionalHeader; |
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image_size = opt->SizeOfImage; |
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efi_reloc = efi_alloc(virt_size, EFI_LOADER_DATA); |
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if (!efi_reloc) { |
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printf("%s: Could not allocate %ld bytes\n", |
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__func__, virt_size); |
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return NULL; |
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} |
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entry = efi_reloc + opt->AddressOfEntryPoint; |
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rel_size = opt->DataDirectory[rel_idx].Size; |
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rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress; |
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} else if (can_run_nt32 && |
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(nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC)) { |
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IMAGE_OPTIONAL_HEADER32 *opt = &nt->OptionalHeader; |
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image_size = opt->SizeOfImage; |
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efi_reloc = efi_alloc(virt_size, EFI_LOADER_DATA); |
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if (!efi_reloc) { |
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printf("%s: Could not allocate %ld bytes\n", |
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__func__, virt_size); |
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return NULL; |
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} |
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entry = efi_reloc + opt->AddressOfEntryPoint; |
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rel_size = opt->DataDirectory[rel_idx].Size; |
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rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress; |
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} else { |
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printf("%s: Invalid optional header magic %x\n", __func__, |
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nt->OptionalHeader.Magic); |
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return NULL; |
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} |
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/* Load sections into RAM */ |
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for (i = num_sections - 1; i >= 0; i--) { |
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IMAGE_SECTION_HEADER *sec = §ions[i]; |
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memset(efi_reloc + sec->VirtualAddress, 0, |
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sec->Misc.VirtualSize); |
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memcpy(efi_reloc + sec->VirtualAddress, |
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efi + sec->PointerToRawData, |
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sec->SizeOfRawData); |
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} |
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/* Run through relocations */ |
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efi_loader_relocate(rel, rel_size, efi_reloc); |
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/* Flush cache */ |
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flush_cache((ulong)efi_reloc, virt_size); |
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invalidate_icache_all(); |
||||
|
||||
/* Populate the loaded image interface bits */ |
||||
loaded_image_info->image_base = efi; |
||||
loaded_image_info->image_size = image_size; |
||||
|
||||
return entry; |
||||
} |
Loading…
Reference in new issue