| 1 | /* SPDX-License-Identifier: GPL-2.0-only */
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| 2 | /*
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| 3 | * Copyright (C) 2013 - 2017 Linaro, Ltd.
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| 4 | * Copyright (C) 2013, 2014 Red Hat, Inc.
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| 5 | */
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| 6 |
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| 7 | |
| 8 | |
| 9 |
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| 10 | .macro efi_signature_nop
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| 11 | |
| 12 | .L_head:
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| 13 | /*
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| 14 | * This ccmp instruction has no meaningful effect except that
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| 15 | * its opcode forms the magic "MZ" signature required by UEFI.
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| 16 | */
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| 17 | ccmp x18, |
| 18 | |
| 19 | /*
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| 20 | * Bootloaders may inspect the opcode at the start of the kernel
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| 21 | * image to decide if the kernel is capable of booting via UEFI.
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| 22 | * So put an ordinary NOP here, not the "MZ.." pseudo-nop above.
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| 23 | */
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| 24 | nop
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| 25 | |
| 26 | .endm
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| 27 |
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| 28 | .macro __EFI_PE_HEADER
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| 29 | |
| 30 | .set .Lpe_header_offset, . - .L_head
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| 31 | .long IMAGE_NT_SIGNATURE
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| 32 | .short IMAGE_FILE_MACHINE_ARM64 // Machine
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| 33 | .short .Lsection_count // NumberOfSections
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| 34 | .long 0 // TimeDateStamp
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| 35 | .long 0 // PointerToSymbolTable
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| 36 | .long 0 // NumberOfSymbols
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| 37 | .short .Lsection_table - .Loptional_header // SizeOfOptionalHeader
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| 38 | .short IMAGE_FILE_DEBUG_STRIPPED | \
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| 39 | IMAGE_FILE_EXECUTABLE_IMAGE | \
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| 40 | IMAGE_FILE_LINE_NUMS_STRIPPED // Characteristics
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| 41 |
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| 42 | .Loptional_header:
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| 43 | .short IMAGE_NT_OPTIONAL_HDR64_MAGIC // PE32+ format
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| 44 | .byte 0x02 // MajorLinkerVersion
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| 45 | .byte 0x14 // MinorLinkerVersion
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| 46 | .long __initdata_begin - .Lefi_header_end // SizeOfCode
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| 47 | .long __pecoff_data_size // SizeOfInitializedData
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| 48 | .long 0 // SizeOfUninitializedData
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| 49 | .long __efistub_efi_pe_entry - .L_head // AddressOfEntryPoint
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| 50 | .long .Lefi_header_end - .L_head // BaseOfCode
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| 51 |
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| 52 | .quad 0 // ImageBase
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| 53 | .long SEGMENT_ALIGN // SectionAlignment
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| 54 | .long PECOFF_FILE_ALIGNMENT // FileAlignment
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| 55 | .short 0 // MajorOperatingSystemVersion
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| 56 | .short 0 // MinorOperatingSystemVersion
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| 57 | .short LINUX_EFISTUB_MAJOR_VERSION // MajorImageVersion
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| 58 | .short LINUX_EFISTUB_MINOR_VERSION // MinorImageVersion
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| 59 | .short 0 // MajorSubsystemVersion
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| 60 | .short 0 // MinorSubsystemVersion
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| 61 | .long 0 // Win32VersionValue
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| 62 |
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| 63 | .long _end - .L_head // SizeOfImage
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| 64 |
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| 65 | // Everything before the kernel image is considered part of the header
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| 66 | .long .Lefi_header_end - .L_head // SizeOfHeaders
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| 67 | .long 0 // CheckSum
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| 68 | .short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem
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| 69 | .short IMAGE_DLLCHARACTERISTICS_NX_COMPAT // DllCharacteristics
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| 70 | .quad 0 // SizeOfStackReserve
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| 71 | .quad 0 // SizeOfStackCommit
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| 72 | .quad 0 // SizeOfHeapReserve
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| 73 | .quad 0 // SizeOfHeapCommit
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| 74 | .long 0 // LoaderFlags
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| 75 | .long (.Lsection_table - .) / 8 // NumberOfRvaAndSizes
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| 76 |
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| 77 | .quad 0 // ExportTable
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| 78 | .quad 0 // ImportTable
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| 79 | .quad 0 // ResourceTable
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| 80 | .quad 0 // ExceptionTable
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| 81 | .quad 0 // CertificationTable
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| 82 | .quad 0 // BaseRelocationTable
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| 83 |
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| 84 | |
| 85 | .long .Lefi_debug_table - .L_head // DebugTable
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| 86 | .long .Lefi_debug_table_size
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| 87 |
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| 88 | /*
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| 89 | * The debug table is referenced via its Relative Virtual Address (RVA),
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| 90 | * which is only defined for those parts of the image that are covered
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| 91 | * by a section declaration. Since this header is not covered by any
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| 92 | * section, the debug table must be emitted elsewhere. So stick it in
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| 93 | * the .init.rodata section instead.
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| 94 | *
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| 95 | * Note that the payloads themselves are permitted to have zero RVAs,
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| 96 | * which means we can simply put those right after the section headers.
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| 97 | */
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| 98 | __INITRODATA
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| 99 |
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| 100 | .align 2
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| 101 | .Lefi_debug_table:
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| 102 | |
| 103 | // EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
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| 104 | .long 0 // Characteristics
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| 105 | .long 0 // TimeDateStamp
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| 106 | .short 0 // MajorVersion
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| 107 | .short 0 // MinorVersion
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| 108 | .long IMAGE_DEBUG_TYPE_CODEVIEW // Type
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| 109 | .long .Lefi_debug_entry_size // SizeOfData
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| 110 | .long 0 // RVA
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| 111 | .long .Lefi_debug_entry - .L_head // FileOffset
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| 112 | |
| 113 | |
| 114 | .long 0 // Characteristics
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| 115 | .long 0 // TimeDateStamp
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| 116 | .short 0 // MajorVersion
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| 117 | .short 0 // MinorVersion
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| 118 | .long IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS // Type
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| 119 | .long 4 // SizeOfData
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| 120 | .long 0 // RVA
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| 121 | .long .Lefi_dll_characteristics_ex - .L_head // FileOffset
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| 122 | |
| 123 | .set .Lefi_debug_table_size, . - .Lefi_debug_table
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| 124 | .previous
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| 125 | |
| 126 |
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| 127 | // Section table
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| 128 | .Lsection_table:
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| 129 | .ascii ".text\0\0\0"
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| 130 | .long __initdata_begin - .Lefi_header_end // VirtualSize
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| 131 | .long .Lefi_header_end - .L_head // VirtualAddress
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| 132 | .long __initdata_begin - .Lefi_header_end // SizeOfRawData
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| 133 | .long .Lefi_header_end - .L_head // PointerToRawData
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| 134 |
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| 135 | .long 0 // PointerToRelocations
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| 136 | .long 0 // PointerToLineNumbers
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| 137 | .short 0 // NumberOfRelocations
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| 138 | .short 0 // NumberOfLineNumbers
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| 139 | .long IMAGE_SCN_CNT_CODE | \
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| 140 | IMAGE_SCN_MEM_READ | \
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| 141 | IMAGE_SCN_MEM_EXECUTE // Characteristics
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| 142 |
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| 143 | .ascii ".data\0\0\0"
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| 144 | .long __pecoff_data_size // VirtualSize
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| 145 | .long __initdata_begin - .L_head // VirtualAddress
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| 146 | .long __pecoff_data_rawsize // SizeOfRawData
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| 147 | .long __initdata_begin - .L_head // PointerToRawData
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| 148 |
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| 149 | .long 0 // PointerToRelocations
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| 150 | .long 0 // PointerToLineNumbers
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| 151 | .short 0 // NumberOfRelocations
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| 152 | .short 0 // NumberOfLineNumbers
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| 153 | .long IMAGE_SCN_CNT_INITIALIZED_DATA | \
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| 154 | IMAGE_SCN_MEM_READ | \
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| 155 | IMAGE_SCN_MEM_WRITE // Characteristics
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| 156 |
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| 157 | .set .Lsection_count, (. - .Lsection_table) / 40
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| 158 |
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| 159 | |
| 160 | .Lefi_debug_entry:
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| 161 | // EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
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| 162 | .ascii "NB10" // Signature
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| 163 | .long 0 // Unknown
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| 164 | .long 0 // Unknown2
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| 165 | .long 0 // Unknown3
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| 166 |
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| 167 | .asciz VMLINUX_PATH
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| 168 |
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| 169 | .set .Lefi_debug_entry_size, . - .Lefi_debug_entry
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| 170 | |
| 171 | |
| 172 | .Lefi_dll_characteristics_ex:
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| 173 | .long IMAGE_DLLCHARACTERISTICS_EX_FORWARD_CFI_COMPAT
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| 174 | |
| 175 |
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| 176 | .balign SEGMENT_ALIGN
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| 177 | .Lefi_header_end:
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| 178 | |
| 179 | .set .Lpe_header_offset, 0x0
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| 180 | |
| 181 | .endm
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