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1da177e4 LT |
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 | ||
25 | #ifndef FS_PART_EFI_H_INCLUDED | |
26 | #define FS_PART_EFI_H_INCLUDED | |
27 | ||
28 | #include <linux/types.h> | |
1da177e4 LT |
29 | #include <linux/fs.h> |
30 | #include <linux/genhd.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/major.h> | |
33 | #include <linux/string.h> | |
34 | #include <linux/efi.h> | |
e3ebf0d4 | 35 | #include <linux/compiler.h> |
1da177e4 LT |
36 | |
37 | #define MSDOS_MBR_SIGNATURE 0xaa55 | |
38 | #define EFI_PMBR_OSTYPE_EFI 0xEF | |
39 | #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE | |
40 | ||
b05ebbbb DB |
41 | #define GPT_MBR_PROTECTIVE 1 |
42 | #define GPT_MBR_HYBRID 2 | |
43 | ||
1da177e4 LT |
44 | #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL |
45 | #define GPT_HEADER_REVISION_V1 0x00010000 | |
46 | #define GPT_PRIMARY_PARTITION_TABLE_LBA 1 | |
47 | ||
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 | ||
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; | |
87038c2d KZ |
85 | |
86 | /* The rest of the logical block is reserved by UEFI and must be zero. | |
87 | * EFI standard handles this by: | |
88 | * | |
89 | * uint8_t reserved2[ BlockSize - 92 ]; | |
90 | */ | |
e3ebf0d4 | 91 | } __packed gpt_header; |
1da177e4 LT |
92 | |
93 | typedef struct _gpt_entry_attributes { | |
94 | u64 required_to_function:1; | |
95 | u64 reserved:47; | |
96 | u64 type_guid_specific:16; | |
e3ebf0d4 | 97 | } __packed gpt_entry_attributes; |
1da177e4 LT |
98 | |
99 | typedef struct _gpt_entry { | |
100 | efi_guid_t partition_type_guid; | |
101 | efi_guid_t unique_partition_guid; | |
102 | __le64 starting_lba; | |
103 | __le64 ending_lba; | |
104 | gpt_entry_attributes attributes; | |
105 | efi_char16_t partition_name[72 / sizeof (efi_char16_t)]; | |
e3ebf0d4 | 106 | } __packed gpt_entry; |
1da177e4 | 107 | |
c2ebdc24 DB |
108 | typedef struct _gpt_mbr_record { |
109 | u8 boot_indicator; /* unused by EFI, set to 0x80 for bootable */ | |
110 | u8 start_head; /* unused by EFI, pt start in CHS */ | |
111 | u8 start_sector; /* unused by EFI, pt start in CHS */ | |
112 | u8 start_track; | |
113 | u8 os_type; /* EFI and legacy non-EFI OS types */ | |
114 | u8 end_head; /* unused by EFI, pt end in CHS */ | |
115 | u8 end_sector; /* unused by EFI, pt end in CHS */ | |
116 | u8 end_track; /* unused by EFI, pt end in CHS */ | |
117 | __le32 starting_lba; /* used by EFI - start addr of the on disk pt */ | |
118 | __le32 size_in_lba; /* used by EFI - size of pt in LBA */ | |
119 | } __packed gpt_mbr_record; | |
120 | ||
121 | ||
1da177e4 LT |
122 | typedef struct _legacy_mbr { |
123 | u8 boot_code[440]; | |
124 | __le32 unique_mbr_signature; | |
125 | __le16 unknown; | |
c2ebdc24 | 126 | gpt_mbr_record partition_record[4]; |
1da177e4 | 127 | __le16 signature; |
e3ebf0d4 | 128 | } __packed legacy_mbr; |
1da177e4 LT |
129 | |
130 | /* Functions */ | |
1493bf21 | 131 | extern int efi_partition(struct parsed_partitions *state); |
1da177e4 LT |
132 | |
133 | #endif |