projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 81a0bc39 | 2 | /* |
| 609eaf07 | 3 | * Copyright (C) 2013-2017 Linaro Ltd |
| 81a0bc39 RF |
4 | * Authors: Roy Franz <roy.franz@linaro.org> |
| 5 | * Ard Biesheuvel <ard.biesheuvel@linaro.org> | |
| 81a0bc39 RF |
6 | */ |
| 7 | ||
| 609eaf07 AB |
8 | #include <linux/pe.h> |
| 9 | #include <linux/sizes.h> | |
| 10 | ||
| 81a0bc39 RF |
11 | .macro __nop |
| 12 | #ifdef CONFIG_EFI_STUB | |
| 13 | @ This is almost but not quite a NOP, since it does clobber the | |
| 14 | @ condition flags. But it is the best we can do for EFI, since | |
| 15 | @ PE/COFF expects the magic string "MZ" at offset 0, while the | |
| 16 | @ ARM/Linux boot protocol expects an executable instruction | |
| 17 | @ there. | |
| 609eaf07 | 18 | .inst MZ_MAGIC | (0x1310 << 16) @ tstne r0, #0x4d000 |
| 81a0bc39 | 19 | #else |
| 60ce2858 AB |
20 | AR_CLASS( mov r0, r0 ) |
| 21 | M_CLASS( nop.w ) | |
| 81a0bc39 RF |
22 | #endif |
| 23 | .endm | |
| 24 | ||
| 25 | .macro __EFI_HEADER | |
| 26 | #ifdef CONFIG_EFI_STUB | |
| 81a0bc39 RF |
27 | .set start_offset, __efi_start - start |
| 28 | .org start + 0x3c | |
| 29 | @ | |
| 30 | @ The PE header can be anywhere in the file, but for | |
| 31 | @ simplicity we keep it together with the MSDOS header | |
| 32 | @ The offset to the PE/COFF header needs to be at offset | |
| 33 | @ 0x3C in the MSDOS header. | |
| 34 | @ The only 2 fields of the MSDOS header that are used are this | |
| 35 | @ PE/COFF offset, and the "MZ" bytes at offset 0x0. | |
| 36 | @ | |
| 609eaf07 | 37 | .long pe_header - start @ Offset to the PE header. |
| 81a0bc39 RF |
38 | |
| 39 | pe_header: | |
| 609eaf07 | 40 | .long PE_MAGIC |
| 81a0bc39 RF |
41 | |
| 42 | coff_header: | |
| 609eaf07 AB |
43 | .short IMAGE_FILE_MACHINE_THUMB @ Machine |
| 44 | .short section_count @ NumberOfSections | |
| 45 | .long 0 @ TimeDateStamp | |
| 46 | .long 0 @ PointerToSymbolTable | |
| 47 | .long 0 @ NumberOfSymbols | |
| 48 | .short section_table - optional_header @ SizeOfOptionalHeader | |
| 49 | .short IMAGE_FILE_32BIT_MACHINE | \ | |
| 50 | IMAGE_FILE_DEBUG_STRIPPED | \ | |
| 51 | IMAGE_FILE_EXECUTABLE_IMAGE | \ | |
| 52 | IMAGE_FILE_LINE_NUMS_STRIPPED @ Characteristics | |
| 81a0bc39 | 53 | |
| e4bae4d0 AB |
54 | #define __pecoff_code_size (__pecoff_data_start - __efi_start) |
| 55 | ||
| 81a0bc39 | 56 | optional_header: |
| 609eaf07 AB |
57 | .short PE_OPT_MAGIC_PE32 @ PE32 format |
| 58 | .byte 0x02 @ MajorLinkerVersion | |
| 59 | .byte 0x14 @ MinorLinkerVersion | |
| e4bae4d0 AB |
60 | .long __pecoff_code_size @ SizeOfCode |
| 61 | .long __pecoff_data_size @ SizeOfInitializedData | |
| 609eaf07 AB |
62 | .long 0 @ SizeOfUninitializedData |
| 63 | .long efi_stub_entry - start @ AddressOfEntryPoint | |
| 64 | .long start_offset @ BaseOfCode | |
| e4bae4d0 | 65 | .long __pecoff_data_start - start @ BaseOfData |
| 81a0bc39 RF |
66 | |
| 67 | extra_header_fields: | |
| 609eaf07 | 68 | .long 0 @ ImageBase |
| e4bae4d0 | 69 | .long SZ_4K @ SectionAlignment |
| 609eaf07 AB |
70 | .long SZ_512 @ FileAlignment |
| 71 | .short 0 @ MajorOsVersion | |
| 72 | .short 0 @ MinorOsVersion | |
| 73 | .short 0 @ MajorImageVersion | |
| 74 | .short 0 @ MinorImageVersion | |
| 75 | .short 0 @ MajorSubsystemVersion | |
| 76 | .short 0 @ MinorSubsystemVersion | |
| 77 | .long 0 @ Win32VersionValue | |
| 81a0bc39 | 78 | |
| e4bae4d0 | 79 | .long __pecoff_end - start @ SizeOfImage |
| 609eaf07 AB |
80 | .long start_offset @ SizeOfHeaders |
| 81 | .long 0 @ CheckSum | |
| 82 | .short IMAGE_SUBSYSTEM_EFI_APPLICATION @ Subsystem | |
| 83 | .short 0 @ DllCharacteristics | |
| 84 | .long 0 @ SizeOfStackReserve | |
| 85 | .long 0 @ SizeOfStackCommit | |
| 86 | .long 0 @ SizeOfHeapReserve | |
| 87 | .long 0 @ SizeOfHeapCommit | |
| 88 | .long 0 @ LoaderFlags | |
| 89 | .long (section_table - .) / 8 @ NumberOfRvaAndSizes | |
| 81a0bc39 | 90 | |
| 609eaf07 AB |
91 | .quad 0 @ ExportTable |
| 92 | .quad 0 @ ImportTable | |
| 93 | .quad 0 @ ResourceTable | |
| 94 | .quad 0 @ ExceptionTable | |
| 95 | .quad 0 @ CertificationTable | |
| 96 | .quad 0 @ BaseRelocationTable | |
| 81a0bc39 RF |
97 | |
| 98 | section_table: | |
| 81a0bc39 | 99 | .ascii ".text\0\0\0" |
| e4bae4d0 | 100 | .long __pecoff_code_size @ VirtualSize |
| 609eaf07 | 101 | .long __efi_start @ VirtualAddress |
| e4bae4d0 | 102 | .long __pecoff_code_size @ SizeOfRawData |
| 609eaf07 AB |
103 | .long __efi_start @ PointerToRawData |
| 104 | .long 0 @ PointerToRelocations | |
| 105 | .long 0 @ PointerToLineNumbers | |
| 106 | .short 0 @ NumberOfRelocations | |
| 107 | .short 0 @ NumberOfLineNumbers | |
| 108 | .long IMAGE_SCN_CNT_CODE | \ | |
| 109 | IMAGE_SCN_MEM_READ | \ | |
| 609eaf07 AB |
110 | IMAGE_SCN_MEM_EXECUTE @ Characteristics |
| 111 | ||
| e4bae4d0 AB |
112 | .ascii ".data\0\0\0" |
| 113 | .long __pecoff_data_size @ VirtualSize | |
| 114 | .long __pecoff_data_start - start @ VirtualAddress | |
| 115 | .long __pecoff_data_rawsize @ SizeOfRawData | |
| 116 | .long __pecoff_data_start - start @ PointerToRawData | |
| 117 | .long 0 @ PointerToRelocations | |
| 118 | .long 0 @ PointerToLineNumbers | |
| 119 | .short 0 @ NumberOfRelocations | |
| 120 | .short 0 @ NumberOfLineNumbers | |
| 121 | .long IMAGE_SCN_CNT_INITIALIZED_DATA | \ | |
| 122 | IMAGE_SCN_MEM_READ | \ | |
| 123 | IMAGE_SCN_MEM_WRITE @ Characteristics | |
| 124 | ||
| 609eaf07 | 125 | .set section_count, (. - section_table) / 40 |
| 81a0bc39 | 126 | |
| e4bae4d0 | 127 | .align 12 |
| 81a0bc39 RF |
128 | __efi_start: |
| 129 | #endif | |
| 130 | .endm |