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gerrit-public.fairphone.software / kernel / msm-5.4 / 4aeb664c2561c0bae18d7a3a141d7d2acf126da1 / . / fs / partitions / efi.h
blob: c44fb0561448603fea42f9f758834b3ea641ad2b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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>
29#include <linux/config.h>
30#include <linux/fs.h>
31#include <linux/genhd.h>
32#include <linux/kernel.h>
33#include <linux/major.h>
34#include <linux/string.h>
35#include <linux/efi.h>
36
37#define MSDOS_MBR_SIGNATURE 0xaa55
38#define EFI_PMBR_OSTYPE_EFI 0xEF
39#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
40
41#define GPT_BLOCK_SIZE 512
42#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
43#define GPT_HEADER_REVISION_V1 0x00010000
44#define GPT_PRIMARY_PARTITION_TABLE_LBA 1
45
46#define PARTITION_SYSTEM_GUID \
47 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
48 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
49#define LEGACY_MBR_PARTITION_GUID \
50 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
51 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
52#define PARTITION_MSFT_RESERVED_GUID \
53 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
54 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
55#define PARTITION_BASIC_DATA_GUID \
56 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
57 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
58#define PARTITION_LINUX_RAID_GUID \
59 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
60 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
61#define PARTITION_LINUX_SWAP_GUID \
62 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
63 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
64#define PARTITION_LINUX_LVM_GUID \
65 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
66 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
67
68typedef struct _gpt_header {
69 __le64 signature;
70 __le32 revision;
71 __le32 header_size;
72 __le32 header_crc32;
73 __le32 reserved1;
74 __le64 my_lba;
75 __le64 alternate_lba;
76 __le64 first_usable_lba;
77 __le64 last_usable_lba;
78 efi_guid_t disk_guid;
79 __le64 partition_entry_lba;
80 __le32 num_partition_entries;
81 __le32 sizeof_partition_entry;
82 __le32 partition_entry_array_crc32;
83 u8 reserved2[GPT_BLOCK_SIZE - 92];
84} __attribute__ ((packed)) gpt_header;
85
86typedef struct _gpt_entry_attributes {
87 u64 required_to_function:1;
88 u64 reserved:47;
89 u64 type_guid_specific:16;
90} __attribute__ ((packed)) gpt_entry_attributes;
91
92typedef struct _gpt_entry {
93 efi_guid_t partition_type_guid;
94 efi_guid_t unique_partition_guid;
95 __le64 starting_lba;
96 __le64 ending_lba;
97 gpt_entry_attributes attributes;
98 efi_char16_t partition_name[72 / sizeof (efi_char16_t)];
99} __attribute__ ((packed)) gpt_entry;
100
101typedef struct _legacy_mbr {
102 u8 boot_code[440];
103 __le32 unique_mbr_signature;
104 __le16 unknown;
105 struct partition partition_record[4];
106 __le16 signature;
107} __attribute__ ((packed)) legacy_mbr;
108
109/* Functions */
110extern int efi_partition(struct parsed_partitions *state, struct block_device *bdev);
111
112#endif
113
114/*
115 * Overrides for Emacs so that we follow Linus's tabbing style.
116 * Emacs will notice this stuff at the end of the file and automatically
117 * adjust the settings for this buffer only. This must remain at the end
118 * of the file.
119 * --------------------------------------------------------------------------
120 * Local variables:
121 * c-indent-level: 4
122 * c-brace-imaginary-offset: 0
123 * c-brace-offset: -4
124 * c-argdecl-indent: 4
125 * c-label-offset: -4
126 * c-continued-statement-offset: 4
127 * c-continued-brace-offset: 0
128 * indent-tabs-mode: nil
129 * tab-width: 8
130 * End:
131 */