| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 - 2017 Linaro, Ltd. |
| 3 | * Copyright (C) 2013, 2014 Red Hat, Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/pe.h> |
| 11 | #include <linux/sizes.h> |
| 12 | |
| 13 | .macro __EFI_PE_HEADER |
| 14 | .long PE_MAGIC |
| 15 | coff_header: |
| 16 | .short IMAGE_FILE_MACHINE_ARM64 // Machine |
| 17 | .short section_count // NumberOfSections |
| 18 | .long 0 // TimeDateStamp |
| 19 | .long 0 // PointerToSymbolTable |
| 20 | .long 0 // NumberOfSymbols |
| 21 | .short section_table - optional_header // SizeOfOptionalHeader |
| 22 | .short IMAGE_FILE_DEBUG_STRIPPED | \ |
| 23 | IMAGE_FILE_EXECUTABLE_IMAGE | \ |
| 24 | IMAGE_FILE_LINE_NUMS_STRIPPED // Characteristics |
| 25 | |
| 26 | optional_header: |
| 27 | .short PE_OPT_MAGIC_PE32PLUS // PE32+ format |
| 28 | .byte 0x02 // MajorLinkerVersion |
| 29 | .byte 0x14 // MinorLinkerVersion |
| 30 | .long __initdata_begin - efi_header_end // SizeOfCode |
| 31 | .long __pecoff_data_size // SizeOfInitializedData |
| 32 | .long 0 // SizeOfUninitializedData |
| 33 | .long __efistub_entry - _head // AddressOfEntryPoint |
| 34 | .long efi_header_end - _head // BaseOfCode |
| 35 | |
| 36 | extra_header_fields: |
| 37 | .quad 0 // ImageBase |
| 38 | .long SZ_4K // SectionAlignment |
| 39 | .long PECOFF_FILE_ALIGNMENT // FileAlignment |
| 40 | .short 0 // MajorOperatingSystemVersion |
| 41 | .short 0 // MinorOperatingSystemVersion |
| 42 | .short 0 // MajorImageVersion |
| 43 | .short 0 // MinorImageVersion |
| 44 | .short 0 // MajorSubsystemVersion |
| 45 | .short 0 // MinorSubsystemVersion |
| 46 | .long 0 // Win32VersionValue |
| 47 | |
| 48 | .long _end - _head // SizeOfImage |
| 49 | |
| 50 | // Everything before the kernel image is considered part of the header |
| 51 | .long efi_header_end - _head // SizeOfHeaders |
| 52 | .long 0 // CheckSum |
| 53 | .short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem |
| 54 | .short 0 // DllCharacteristics |
| 55 | .quad 0 // SizeOfStackReserve |
| 56 | .quad 0 // SizeOfStackCommit |
| 57 | .quad 0 // SizeOfHeapReserve |
| 58 | .quad 0 // SizeOfHeapCommit |
| 59 | .long 0 // LoaderFlags |
| 60 | .long (section_table - .) / 8 // NumberOfRvaAndSizes |
| 61 | |
| 62 | .quad 0 // ExportTable |
| 63 | .quad 0 // ImportTable |
| 64 | .quad 0 // ResourceTable |
| 65 | .quad 0 // ExceptionTable |
| 66 | .quad 0 // CertificationTable |
| 67 | .quad 0 // BaseRelocationTable |
| 68 | |
| 69 | #ifdef CONFIG_DEBUG_EFI |
| 70 | .long efi_debug_table - _head // DebugTable |
| 71 | .long efi_debug_table_size |
| 72 | #endif |
| 73 | |
| 74 | // Section table |
| 75 | section_table: |
| 76 | .ascii ".text\0\0\0" |
| 77 | .long __initdata_begin - efi_header_end // VirtualSize |
| 78 | .long efi_header_end - _head // VirtualAddress |
| 79 | .long __initdata_begin - efi_header_end // SizeOfRawData |
| 80 | .long efi_header_end - _head // PointerToRawData |
| 81 | |
| 82 | .long 0 // PointerToRelocations |
| 83 | .long 0 // PointerToLineNumbers |
| 84 | .short 0 // NumberOfRelocations |
| 85 | .short 0 // NumberOfLineNumbers |
| 86 | .long IMAGE_SCN_CNT_CODE | \ |
| 87 | IMAGE_SCN_MEM_READ | \ |
| 88 | IMAGE_SCN_MEM_EXECUTE // Characteristics |
| 89 | |
| 90 | .ascii ".data\0\0\0" |
| 91 | .long __pecoff_data_size // VirtualSize |
| 92 | .long __initdata_begin - _head // VirtualAddress |
| 93 | .long __pecoff_data_rawsize // SizeOfRawData |
| 94 | .long __initdata_begin - _head // PointerToRawData |
| 95 | |
| 96 | .long 0 // PointerToRelocations |
| 97 | .long 0 // PointerToLineNumbers |
| 98 | .short 0 // NumberOfRelocations |
| 99 | .short 0 // NumberOfLineNumbers |
| 100 | .long IMAGE_SCN_CNT_INITIALIZED_DATA | \ |
| 101 | IMAGE_SCN_MEM_READ | \ |
| 102 | IMAGE_SCN_MEM_WRITE // Characteristics |
| 103 | |
| 104 | .set section_count, (. - section_table) / 40 |
| 105 | |
| 106 | #ifdef CONFIG_DEBUG_EFI |
| 107 | /* |
| 108 | * The debug table is referenced via its Relative Virtual Address (RVA), |
| 109 | * which is only defined for those parts of the image that are covered |
| 110 | * by a section declaration. Since this header is not covered by any |
| 111 | * section, the debug table must be emitted elsewhere. So stick it in |
| 112 | * the .init.rodata section instead. |
| 113 | * |
| 114 | * Note that the EFI debug entry itself may legally have a zero RVA, |
| 115 | * which means we can simply put it right after the section headers. |
| 116 | */ |
| 117 | __INITRODATA |
| 118 | |
| 119 | .align 2 |
| 120 | efi_debug_table: |
| 121 | // EFI_IMAGE_DEBUG_DIRECTORY_ENTRY |
| 122 | .long 0 // Characteristics |
| 123 | .long 0 // TimeDateStamp |
| 124 | .short 0 // MajorVersion |
| 125 | .short 0 // MinorVersion |
| 126 | .long IMAGE_DEBUG_TYPE_CODEVIEW // Type |
| 127 | .long efi_debug_entry_size // SizeOfData |
| 128 | .long 0 // RVA |
| 129 | .long efi_debug_entry - _head // FileOffset |
| 130 | |
| 131 | .set efi_debug_table_size, . - efi_debug_table |
| 132 | .previous |
| 133 | |
| 134 | efi_debug_entry: |
| 135 | // EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY |
| 136 | .ascii "NB10" // Signature |
| 137 | .long 0 // Unknown |
| 138 | .long 0 // Unknown2 |
| 139 | .long 0 // Unknown3 |
| 140 | |
| 141 | .asciz VMLINUX_PATH |
| 142 | |
| 143 | .set efi_debug_entry_size, . - efi_debug_entry |
| 144 | #endif |
| 145 | |
| 146 | /* |
| 147 | * EFI will load .text onwards at the 4k section alignment |
| 148 | * described in the PE/COFF header. To ensure that instruction |
| 149 | * sequences using an adrp and a :lo12: immediate will function |
| 150 | * correctly at this alignment, we must ensure that .text is |
| 151 | * placed at a 4k boundary in the Image to begin with. |
| 152 | */ |
| 153 | .align 12 |
| 154 | efi_header_end: |
| 155 | .endm |