efi-header.S 3.5 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) 2020 Western Digital Corporation or its affiliates.
  4. * Adapted from arch/arm64/kernel/efi-header.S
  5. */
  6. #include <linux/pe.h>
  7. #include <linux/sizes.h>
  8. .macro __EFI_PE_HEADER
  9. .long PE_MAGIC
  10. coff_header:
  11. #ifdef CONFIG_64BIT
  12. .short IMAGE_FILE_MACHINE_RISCV64 // Machine
  13. #else
  14. .short IMAGE_FILE_MACHINE_RISCV32 // Machine
  15. #endif
  16. .short section_count // NumberOfSections
  17. .long 0 // TimeDateStamp
  18. .long 0 // PointerToSymbolTable
  19. .long 0 // NumberOfSymbols
  20. .short section_table - optional_header // SizeOfOptionalHeader
  21. .short IMAGE_FILE_DEBUG_STRIPPED | \
  22. IMAGE_FILE_EXECUTABLE_IMAGE | \
  23. IMAGE_FILE_LINE_NUMS_STRIPPED // Characteristics
  24. optional_header:
  25. #ifdef CONFIG_64BIT
  26. .short PE_OPT_MAGIC_PE32PLUS // PE32+ format
  27. #else
  28. .short PE_OPT_MAGIC_PE32 // PE32 format
  29. #endif
  30. .byte 0x02 // MajorLinkerVersion
  31. .byte 0x14 // MinorLinkerVersion
  32. .long __pecoff_text_end - efi_header_end // SizeOfCode
  33. .long __pecoff_data_virt_size // SizeOfInitializedData
  34. .long 0 // SizeOfUninitializedData
  35. .long __efistub_efi_pe_entry - _start // AddressOfEntryPoint
  36. .long efi_header_end - _start // BaseOfCode
  37. #ifdef CONFIG_32BIT
  38. .long __pecoff_text_end - _start // BaseOfData
  39. #endif
  40. extra_header_fields:
  41. .quad 0 // ImageBase
  42. .long PECOFF_SECTION_ALIGNMENT // SectionAlignment
  43. .long PECOFF_FILE_ALIGNMENT // FileAlignment
  44. .short 0 // MajorOperatingSystemVersion
  45. .short 0 // MinorOperatingSystemVersion
  46. .short LINUX_EFISTUB_MAJOR_VERSION // MajorImageVersion
  47. .short LINUX_EFISTUB_MINOR_VERSION // MinorImageVersion
  48. .short 0 // MajorSubsystemVersion
  49. .short 0 // MinorSubsystemVersion
  50. .long 0 // Win32VersionValue
  51. .long _end - _start // SizeOfImage
  52. // Everything before the kernel image is considered part of the header
  53. .long efi_header_end - _start // SizeOfHeaders
  54. .long 0 // CheckSum
  55. .short IMAGE_SUBSYSTEM_EFI_APPLICATION // Subsystem
  56. .short 0 // DllCharacteristics
  57. .quad 0 // SizeOfStackReserve
  58. .quad 0 // SizeOfStackCommit
  59. .quad 0 // SizeOfHeapReserve
  60. .quad 0 // SizeOfHeapCommit
  61. .long 0 // LoaderFlags
  62. .long (section_table - .) / 8 // NumberOfRvaAndSizes
  63. .quad 0 // ExportTable
  64. .quad 0 // ImportTable
  65. .quad 0 // ResourceTable
  66. .quad 0 // ExceptionTable
  67. .quad 0 // CertificationTable
  68. .quad 0 // BaseRelocationTable
  69. // Section table
  70. section_table:
  71. .ascii ".text\0\0\0"
  72. .long __pecoff_text_end - efi_header_end // VirtualSize
  73. .long efi_header_end - _start // VirtualAddress
  74. .long __pecoff_text_end - efi_header_end // SizeOfRawData
  75. .long efi_header_end - _start // PointerToRawData
  76. .long 0 // PointerToRelocations
  77. .long 0 // PointerToLineNumbers
  78. .short 0 // NumberOfRelocations
  79. .short 0 // NumberOfLineNumbers
  80. .long IMAGE_SCN_CNT_CODE | \
  81. IMAGE_SCN_MEM_READ | \
  82. IMAGE_SCN_MEM_EXECUTE // Characteristics
  83. .ascii ".data\0\0\0"
  84. .long __pecoff_data_virt_size // VirtualSize
  85. .long __pecoff_text_end - _start // VirtualAddress
  86. .long __pecoff_data_raw_size // SizeOfRawData
  87. .long __pecoff_text_end - _start // PointerToRawData
  88. .long 0 // PointerToRelocations
  89. .long 0 // PointerToLineNumbers
  90. .short 0 // NumberOfRelocations
  91. .short 0 // NumberOfLineNumbers
  92. .long IMAGE_SCN_CNT_INITIALIZED_DATA | \
  93. IMAGE_SCN_MEM_READ | \
  94. IMAGE_SCN_MEM_WRITE // Characteristics
  95. .set section_count, (. - section_table) / 40
  96. .balign 0x1000
  97. efi_header_end:
  98. .endm