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8 #include <linux/pe.h>
9 #include <linux/sizes.h>
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 MZ_MAGIC | (0x1310 << 16) @ tstne r0, #0x4d000
19 #else
20 AR_CLASS( mov r0, r0 )
21 M_CLASS( nop.w )
22 #endif
23 .endm
24
25 .macro __EFI_HEADER
26 #ifdef CONFIG_EFI_STUB
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 @
37 .long pe_header - start @ Offset to the PE header.
38
39 pe_header:
40 .long PE_MAGIC
41
42 coff_header:
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
53
54 #define __pecoff_code_size (__pecoff_data_start - __efi_start)
55
56 optional_header:
57 .short PE_OPT_MAGIC_PE32 @ PE32 format
58 .byte 0x02 @ MajorLinkerVersion
59 .byte 0x14 @ MinorLinkerVersion
60 .long __pecoff_code_size @ SizeOfCode
61 .long __pecoff_data_size @ SizeOfInitializedData
62 .long 0 @ SizeOfUninitializedData
63 .long efi_stub_entry - start @ AddressOfEntryPoint
64 .long start_offset @ BaseOfCode
65 .long __pecoff_data_start - start @ BaseOfData
66
67 extra_header_fields:
68 .long 0 @ ImageBase
69 .long SZ_4K @ SectionAlignment
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
78
79 .long __pecoff_end - start @ SizeOfImage
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
90
91 .quad 0 @ ExportTable
92 .quad 0 @ ImportTable
93 .quad 0 @ ResourceTable
94 .quad 0 @ ExceptionTable
95 .quad 0 @ CertificationTable
96 .quad 0 @ BaseRelocationTable
97
98 section_table:
99 .ascii ".text\0\0\0"
100 .long __pecoff_code_size @ VirtualSize
101 .long __efi_start @ VirtualAddress
102 .long __pecoff_code_size @ SizeOfRawData
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 | \
110 IMAGE_SCN_MEM_EXECUTE @ Characteristics
111
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
125 .set section_count, (. - section_table) / 40
126
127 .align 12
128 __efi_start:
129 #endif
130 .endm