efi.h 4.2 KB

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  1. /************************************************************
  2. * EFI GUID Partition Table
  3. * Per Intel EFI Specification v1.02
  4. * http://developer.intel.com/technology/efi/efi.htm
  5. *
  6. * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000
  7. * Copyright 2000,2001 Dell Inc.
  8. *
  9. * This program is free software; you can redistribute it and/or modify
  10. * it under the terms of the GNU General Public License as published by
  11. * the Free Software Foundation; either version 2 of the License, or
  12. * (at your option) any later version.
  13. *
  14. * This program is distributed in the hope that it will be useful,
  15. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17. * GNU General Public License for more details.
  18. *
  19. * You should have received a copy of the GNU General Public License
  20. * along with this program; if not, write to the Free Software
  21. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22. *
  23. ************************************************************/
  24. #ifndef FS_PART_EFI_H_INCLUDED
  25. #define FS_PART_EFI_H_INCLUDED
  26. #include <linux/types.h>
  27. #include <linux/fs.h>
  28. #include <linux/genhd.h>
  29. #include <linux/kernel.h>
  30. #include <linux/major.h>
  31. #include <linux/string.h>
  32. #include <linux/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_BLOCK_SIZE 512
  37. #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
  38. #define GPT_HEADER_REVISION_V1 0x00010000
  39. #define GPT_PRIMARY_PARTITION_TABLE_LBA 1
  40. #define PARTITION_SYSTEM_GUID \
  41. EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
  42. 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
  43. #define LEGACY_MBR_PARTITION_GUID \
  44. EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
  45. 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
  46. #define PARTITION_MSFT_RESERVED_GUID \
  47. EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
  48. 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
  49. #define PARTITION_BASIC_DATA_GUID \
  50. EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
  51. 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
  52. #define PARTITION_LINUX_RAID_GUID \
  53. EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
  54. 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
  55. #define PARTITION_LINUX_SWAP_GUID \
  56. EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
  57. 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
  58. #define PARTITION_LINUX_LVM_GUID \
  59. EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
  60. 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
  61. typedef struct _gpt_header {
  62. __le64 signature;
  63. __le32 revision;
  64. __le32 header_size;
  65. __le32 header_crc32;
  66. __le32 reserved1;
  67. __le64 my_lba;
  68. __le64 alternate_lba;
  69. __le64 first_usable_lba;
  70. __le64 last_usable_lba;
  71. efi_guid_t disk_guid;
  72. __le64 partition_entry_lba;
  73. __le32 num_partition_entries;
  74. __le32 sizeof_partition_entry;
  75. __le32 partition_entry_array_crc32;
  76. u8 reserved2[GPT_BLOCK_SIZE - 92];
  77. } __attribute__ ((packed)) gpt_header;
  78. typedef struct _gpt_entry_attributes {
  79. u64 required_to_function:1;
  80. u64 reserved:47;
  81. u64 type_guid_specific:16;
  82. } __attribute__ ((packed)) gpt_entry_attributes;
  83. typedef struct _gpt_entry {
  84. efi_guid_t partition_type_guid;
  85. efi_guid_t unique_partition_guid;
  86. __le64 starting_lba;
  87. __le64 ending_lba;
  88. gpt_entry_attributes attributes;
  89. efi_char16_t partition_name[72 / sizeof (efi_char16_t)];
  90. } __attribute__ ((packed)) gpt_entry;
  91. typedef struct _legacy_mbr {
  92. u8 boot_code[440];
  93. __le32 unique_mbr_signature;
  94. __le16 unknown;
  95. struct partition partition_record[4];
  96. __le16 signature;
  97. } __attribute__ ((packed)) legacy_mbr;
  98. /* Functions */
  99. extern int efi_partition(struct parsed_partitions *state, struct block_device *bdev);
  100. #endif
  101. /*
  102. * Overrides for Emacs so that we follow Linus's tabbing style.
  103. * Emacs will notice this stuff at the end of the file and automatically
  104. * adjust the settings for this buffer only. This must remain at the end
  105. * of the file.
  106. * --------------------------------------------------------------------------
  107. * Local variables:
  108. * c-indent-level: 4
  109. * c-brace-imaginary-offset: 0
  110. * c-brace-offset: -4
  111. * c-argdecl-indent: 4
  112. * c-label-offset: -4
  113. * c-continued-statement-offset: 4
  114. * c-continued-brace-offset: 0
  115. * indent-tabs-mode: nil
  116. * tab-width: 8
  117. * End:
  118. */