2 * Copyright (C) 2013-2015 Linaro Ltd
3 * Authors: Roy Franz <roy.franz@linaro.org>
4 * Ard Biesheuvel <ard.biesheuvel@linaro.org>
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.
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
18 .inst 'M' | ('Z' << 8) | (0x1310 << 16) @ tstne r0, #0x4d000
25 #ifdef CONFIG_EFI_STUB
28 .set start_offset, __efi_start - start
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.
38 .long pe_header - start @ Offset to the PE 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
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
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
80 .long _end - start @ SizeOfImage
81 .long start_offset @ SizeOfHeaders
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
90 .long 0x6 @ NumberOfRvaAndSizes
94 .quad 0 @ ResourceTable
95 .quad 0 @ ExceptionTable
96 .quad 0 @ CertificationTable
97 .quad 0 @ BaseRelocationTable
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.
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
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