diff options
Diffstat (limited to 'arch/arm/boot/compressed/efi-header.S')
| -rw-r--r-- | arch/arm/boot/compressed/efi-header.S | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S new file mode 100644 index 000000000000..9d5dc4fda3c1 --- /dev/null +++ b/arch/arm/boot/compressed/efi-header.S | |||
| @@ -0,0 +1,130 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (C) 2013-2015 Linaro Ltd | ||
| 3 | * Authors: Roy Franz <roy.franz@linaro.org> | ||
| 4 | * Ard Biesheuvel <ard.biesheuvel@linaro.org> | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License version 2 as | ||
| 8 | * published by the Free Software Foundation. | ||
| 9 | */ | ||
| 10 | |||
| 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. | ||
| 18 | .inst 'M' | ('Z' << 8) | (0x1310 << 16) @ tstne r0, #0x4d000 | ||
| 19 | #else | ||
| 20 | mov r0, r0 | ||
| 21 | #endif | ||
| 22 | .endm | ||
| 23 | |||
| 24 | .macro __EFI_HEADER | ||
| 25 | #ifdef CONFIG_EFI_STUB | ||
| 26 | b __efi_start | ||
| 27 | |||
| 28 | .set start_offset, __efi_start - start | ||
| 29 | .org start + 0x3c | ||
| 30 | @ | ||
| 31 | @ The PE header can be anywhere in the file, but for | ||
| 32 | @ simplicity we keep it together with the MSDOS header | ||
| 33 | @ The offset to the PE/COFF header needs to be at offset | ||
| 34 | @ 0x3C in the MSDOS header. | ||
| 35 | @ The only 2 fields of the MSDOS header that are used are this | ||
| 36 | @ PE/COFF offset, and the "MZ" bytes at offset 0x0. | ||
| 37 | @ | ||
| 38 | .long pe_header - start @ Offset to the PE header. | ||
| 39 | |||
| 40 | pe_header: | ||
| 41 | .ascii "PE\0\0" | ||
| 42 | |||
| 43 | coff_header: | ||
| 44 | .short 0x01c2 @ ARM or Thumb | ||
| 45 | .short 2 @ nr_sections | ||
| 46 | .long 0 @ TimeDateStamp | ||
| 47 | .long 0 @ PointerToSymbolTable | ||
| 48 | .long 1 @ NumberOfSymbols | ||
| 49 | .short section_table - optional_header | ||
| 50 | @ SizeOfOptionalHeader | ||
| 51 | .short 0x306 @ Characteristics. | ||
| 52 | @ IMAGE_FILE_32BIT_MACHINE | | ||
| 53 | @ IMAGE_FILE_DEBUG_STRIPPED | | ||
| 54 | @ IMAGE_FILE_EXECUTABLE_IMAGE | | ||
| 55 | @ IMAGE_FILE_LINE_NUMS_STRIPPED | ||
| 56 | |||
| 57 | optional_header: | ||
| 58 | .short 0x10b @ PE32 format | ||
| 59 | .byte 0x02 @ MajorLinkerVersion | ||
| 60 | .byte 0x14 @ MinorLinkerVersion | ||
| 61 | .long _end - __efi_start @ SizeOfCode | ||
| 62 | .long 0 @ SizeOfInitializedData | ||
| 63 | .long 0 @ SizeOfUninitializedData | ||
| 64 | .long efi_stub_entry - start @ AddressOfEntryPoint | ||
| 65 | .long start_offset @ BaseOfCode | ||
| 66 | .long 0 @ data | ||
| 67 | |||
| 68 | extra_header_fields: | ||
| 69 | .long 0 @ ImageBase | ||
| 70 | .long 0x200 @ SectionAlignment | ||
| 71 | .long 0x200 @ FileAlignment | ||
| 72 | .short 0 @ MajorOperatingSystemVersion | ||
| 73 | .short 0 @ MinorOperatingSystemVersion | ||
| 74 | .short 0 @ MajorImageVersion | ||
| 75 | .short 0 @ MinorImageVersion | ||
| 76 | .short 0 @ MajorSubsystemVersion | ||
| 77 | .short 0 @ MinorSubsystemVersion | ||
| 78 | .long 0 @ Win32VersionValue | ||
| 79 | |||
| 80 | .long _end - start @ SizeOfImage | ||
| 81 | .long start_offset @ SizeOfHeaders | ||
| 82 | .long 0 @ CheckSum | ||
| 83 | .short 0xa @ Subsystem (EFI application) | ||
| 84 | .short 0 @ DllCharacteristics | ||
| 85 | .long 0 @ SizeOfStackReserve | ||
| 86 | .long 0 @ SizeOfStackCommit | ||
| 87 | .long 0 @ SizeOfHeapReserve | ||
| 88 | .long 0 @ SizeOfHeapCommit | ||
| 89 | .long 0 @ LoaderFlags | ||
| 90 | .long 0x6 @ NumberOfRvaAndSizes | ||
| 91 | |||
| 92 | .quad 0 @ ExportTable | ||
| 93 | .quad 0 @ ImportTable | ||
| 94 | .quad 0 @ ResourceTable | ||
| 95 | .quad 0 @ ExceptionTable | ||
| 96 | .quad 0 @ CertificationTable | ||
| 97 | .quad 0 @ BaseRelocationTable | ||
| 98 | |||
| 99 | section_table: | ||
| 100 | @ | ||
| 101 | @ The EFI application loader requires a relocation section | ||
| 102 | @ because EFI applications must be relocatable. This is a | ||
| 103 | @ dummy section as far as we are concerned. | ||
| 104 | @ | ||
| 105 | .ascii ".reloc\0\0" | ||
| 106 | .long 0 @ VirtualSize | ||
| 107 | .long 0 @ VirtualAddress | ||
| 108 | .long 0 @ SizeOfRawData | ||
| 109 | .long 0 @ PointerToRawData | ||
| 110 | .long 0 @ PointerToRelocations | ||
| 111 | .long 0 @ PointerToLineNumbers | ||
| 112 | .short 0 @ NumberOfRelocations | ||
| 113 | .short 0 @ NumberOfLineNumbers | ||
| 114 | .long 0x42100040 @ Characteristics | ||
| 115 | |||
| 116 | .ascii ".text\0\0\0" | ||
| 117 | .long _end - __efi_start @ VirtualSize | ||
| 118 | .long __efi_start @ VirtualAddress | ||
| 119 | .long _edata - __efi_start @ SizeOfRawData | ||
| 120 | .long __efi_start @ PointerToRawData | ||
| 121 | .long 0 @ PointerToRelocations | ||
| 122 | .long 0 @ PointerToLineNumbers | ||
| 123 | .short 0 @ NumberOfRelocations | ||
| 124 | .short 0 @ NumberOfLineNumbers | ||
| 125 | .long 0xe0500020 @ Characteristics | ||
| 126 | |||
| 127 | .align 9 | ||
| 128 | __efi_start: | ||
| 129 | #endif | ||
| 130 | .endm | ||