part_efi.h 4.3 KB

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  1. /*
  2. * Copyright (C) 2008 RuggedCom, Inc.
  3. * Richard Retanubun <RichardRetanubun@RuggedCom.com>
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. /*
  24. * See also linux/fs/partitions/efi.h
  25. *
  26. * EFI GUID Partition Table
  27. * Per Intel EFI Specification v1.02
  28. * http://developer.intel.com/technology/efi/efi.htm
  29. */
  30. #include <linux/compiler.h>
  31. #ifndef _DISK_PART_EFI_H
  32. #define _DISK_PART_EFI_H
  33. #define MSDOS_MBR_SIGNATURE 0xAA55
  34. #define EFI_PMBR_OSTYPE_EFI 0xEF
  35. #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
  36. #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
  37. #define GPT_HEADER_REVISION_V1 0x00010000
  38. #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL
  39. #define GPT_ENTRY_NAME "gpt"
  40. #define GPT_ENTRY_NUMBERS 128
  41. #define GPT_ENTRY_SIZE 128
  42. #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
  43. ((efi_guid_t) \
  44. {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
  45. (b) & 0xff, ((b) >> 8) & 0xff, \
  46. (c) & 0xff, ((c) >> 8) & 0xff, \
  47. (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
  48. #define PARTITION_SYSTEM_GUID \
  49. EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
  50. 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
  51. #define LEGACY_MBR_PARTITION_GUID \
  52. EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
  53. 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
  54. #define PARTITION_MSFT_RESERVED_GUID \
  55. EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
  56. 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
  57. #define PARTITION_BASIC_DATA_GUID \
  58. EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
  59. 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
  60. #define PARTITION_LINUX_RAID_GUID \
  61. EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
  62. 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
  63. #define PARTITION_LINUX_SWAP_GUID \
  64. EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
  65. 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
  66. #define PARTITION_LINUX_LVM_GUID \
  67. EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
  68. 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
  69. /* linux/include/efi.h */
  70. typedef u16 efi_char16_t;
  71. typedef struct {
  72. u8 b[16];
  73. } efi_guid_t;
  74. /* based on linux/include/genhd.h */
  75. struct partition {
  76. u8 boot_ind; /* 0x80 - active */
  77. u8 head; /* starting head */
  78. u8 sector; /* starting sector */
  79. u8 cyl; /* starting cylinder */
  80. u8 sys_ind; /* What partition type */
  81. u8 end_head; /* end head */
  82. u8 end_sector; /* end sector */
  83. u8 end_cyl; /* end cylinder */
  84. __le32 start_sect; /* starting sector counting from 0 */
  85. __le32 nr_sects; /* nr of sectors in partition */
  86. } __packed;
  87. /* based on linux/fs/partitions/efi.h */
  88. typedef struct _gpt_header {
  89. __le64 signature;
  90. __le32 revision;
  91. __le32 header_size;
  92. __le32 header_crc32;
  93. __le32 reserved1;
  94. __le64 my_lba;
  95. __le64 alternate_lba;
  96. __le64 first_usable_lba;
  97. __le64 last_usable_lba;
  98. efi_guid_t disk_guid;
  99. __le64 partition_entry_lba;
  100. __le32 num_partition_entries;
  101. __le32 sizeof_partition_entry;
  102. __le32 partition_entry_array_crc32;
  103. } __packed gpt_header;
  104. typedef union _gpt_entry_attributes {
  105. struct {
  106. u64 required_to_function:1;
  107. u64 no_block_io_protocol:1;
  108. u64 legacy_bios_bootable:1;
  109. u64 reserved:45;
  110. u64 type_guid_specific:16;
  111. } fields;
  112. unsigned long long raw;
  113. } __packed gpt_entry_attributes;
  114. #define PARTNAME_SZ (72 / sizeof(efi_char16_t))
  115. typedef struct _gpt_entry {
  116. efi_guid_t partition_type_guid;
  117. efi_guid_t unique_partition_guid;
  118. __le64 starting_lba;
  119. __le64 ending_lba;
  120. gpt_entry_attributes attributes;
  121. efi_char16_t partition_name[PARTNAME_SZ];
  122. } __packed gpt_entry;
  123. typedef struct _legacy_mbr {
  124. u8 boot_code[440];
  125. __le32 unique_mbr_signature;
  126. __le16 unknown;
  127. struct partition partition_record[4];
  128. __le16 signature;
  129. } __packed legacy_mbr;
  130. #endif /* _DISK_PART_EFI_H */