part_efi.h 3.6 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright (C) 2008 RuggedCom, Inc.
  4. * Richard Retanubun <RichardRetanubun@RuggedCom.com>
  5. */
  6. /*
  7. * See also linux/fs/partitions/efi.h
  8. *
  9. * EFI GUID Partition Table
  10. * Per Intel EFI Specification v1.02
  11. * http://developer.intel.com/technology/efi/efi.htm
  12. */
  13. #include <linux/compiler.h>
  14. #ifndef _DISK_PART_EFI_H
  15. #define _DISK_PART_EFI_H
  16. #include <efi.h>
  17. #define MSDOS_MBR_SIGNATURE 0xAA55
  18. #define MSDOS_MBR_BOOT_CODE_SIZE 440
  19. #define EFI_PMBR_OSTYPE_EFI 0xEF
  20. #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
  21. #define GPT_HEADER_SIGNATURE_UBOOT 0x5452415020494645ULL // 'EFI PART'
  22. #define GPT_HEADER_CHROMEOS_IGNORE 0x454d45524f4e4749ULL // 'IGNOREME'
  23. #define GPT_HEADER_REVISION_V1 0x00010000
  24. #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL
  25. #define GPT_ENTRY_NUMBERS CONFIG_EFI_PARTITION_ENTRIES_NUMBERS
  26. #define GPT_ENTRY_SIZE 128
  27. #define PARTITION_SYSTEM_GUID \
  28. EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
  29. 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
  30. #define LEGACY_MBR_PARTITION_GUID \
  31. EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
  32. 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
  33. #define PARTITION_MSFT_RESERVED_GUID \
  34. EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
  35. 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
  36. #define PARTITION_BASIC_DATA_GUID \
  37. EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
  38. 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
  39. #define PARTITION_LINUX_FILE_SYSTEM_DATA_GUID \
  40. EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \
  41. 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4)
  42. #define PARTITION_LINUX_RAID_GUID \
  43. EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
  44. 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
  45. #define PARTITION_LINUX_SWAP_GUID \
  46. EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
  47. 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
  48. #define PARTITION_LINUX_LVM_GUID \
  49. EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
  50. 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
  51. #define PARTITION_U_BOOT_ENVIRONMENT \
  52. EFI_GUID( 0x3de21764, 0x95bd, 0x54bd, \
  53. 0xa5, 0xc3, 0x4a, 0xbe, 0x78, 0x6f, 0x38, 0xa8)
  54. /* linux/include/efi.h */
  55. typedef u16 efi_char16_t;
  56. /* based on linux/include/genhd.h */
  57. struct partition {
  58. u8 boot_ind; /* 0x80 - active */
  59. u8 head; /* starting head */
  60. u8 sector; /* starting sector */
  61. u8 cyl; /* starting cylinder */
  62. u8 sys_ind; /* What partition type */
  63. u8 end_head; /* end head */
  64. u8 end_sector; /* end sector */
  65. u8 end_cyl; /* end cylinder */
  66. __le32 start_sect; /* starting sector counting from 0 */
  67. __le32 nr_sects; /* nr of sectors in partition */
  68. } __packed;
  69. /* based on linux/fs/partitions/efi.h */
  70. typedef struct _gpt_header {
  71. __le64 signature;
  72. __le32 revision;
  73. __le32 header_size;
  74. __le32 header_crc32;
  75. __le32 reserved1;
  76. __le64 my_lba;
  77. __le64 alternate_lba;
  78. __le64 first_usable_lba;
  79. __le64 last_usable_lba;
  80. efi_guid_t disk_guid;
  81. __le64 partition_entry_lba;
  82. __le32 num_partition_entries;
  83. __le32 sizeof_partition_entry;
  84. __le32 partition_entry_array_crc32;
  85. } __packed gpt_header;
  86. typedef union _gpt_entry_attributes {
  87. struct {
  88. u64 required_to_function:1;
  89. u64 no_block_io_protocol:1;
  90. u64 legacy_bios_bootable:1;
  91. u64 reserved:45;
  92. u64 type_guid_specific:16;
  93. } fields;
  94. unsigned long long raw;
  95. } __packed gpt_entry_attributes;
  96. #define PARTNAME_SZ (72 / sizeof(efi_char16_t))
  97. typedef struct _gpt_entry {
  98. efi_guid_t partition_type_guid;
  99. efi_guid_t unique_partition_guid;
  100. __le64 starting_lba;
  101. __le64 ending_lba;
  102. gpt_entry_attributes attributes;
  103. efi_char16_t partition_name[PARTNAME_SZ];
  104. } __packed gpt_entry;
  105. typedef struct _legacy_mbr {
  106. u8 boot_code[MSDOS_MBR_BOOT_CODE_SIZE];
  107. __le32 unique_mbr_signature;
  108. __le16 unknown;
  109. struct partition partition_record[4];
  110. __le16 signature;
  111. } __packed legacy_mbr;
  112. #endif /* _DISK_PART_EFI_H */