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 Computer Corporation
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/blk.h>
36 #include <linux/efi.h>
37
38 #define MSDOS_MBR_SIGNATURE 0xaa55
39 #define EFI_PMBR_OSTYPE_EFI 0xEF
40 #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
41
42 #define GPT_BLOCK_SIZE 512
43 #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
44 #define GPT_HEADER_REVISION_V1 0x00010000
45 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1
46
47 #define PARTITION_SYSTEM_GUID \
48 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
49 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
50 #define LEGACY_MBR_PARTITION_GUID \
51 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
52 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
53 #define PARTITION_MSFT_RESERVED_GUID \
54 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
55 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
56 #define PARTITION_BASIC_DATA_GUID \
57 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
58 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
59 #define PARTITION_LINUX_RAID_GUID \
60 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
61 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
62 #define PARTITION_LINUX_SWAP_GUID \
63 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
64 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
65 #define PARTITION_LINUX_LVM_GUID \
66 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
67 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
68
69 typedef struct _gpt_header {
70 u64 signature;
71 u32 revision;
72 u32 header_size;
73 u32 header_crc32;
74 u32 reserved1;
75 u64 my_lba;
76 u64 alternate_lba;
77 u64 first_usable_lba;
78 u64 last_usable_lba;
79 efi_guid_t disk_guid;
80 u64 partition_entry_lba;
81 u32 num_partition_entries;
82 u32 sizeof_partition_entry;
83 u32 partition_entry_array_crc32;
84 u8 reserved2[GPT_BLOCK_SIZE - 92];
85 } __attribute__ ((packed)) gpt_header;
86
87 typedef struct _gpt_entry_attributes {
88 u64 required_to_function:1;
89 u64 reserved:47;
90 u64 type_guid_specific:16;
91 } __attribute__ ((packed)) gpt_entry_attributes;
92
93 typedef struct _gpt_entry {
94 efi_guid_t partition_type_guid;
95 efi_guid_t unique_partition_guid;
96 u64 starting_lba;
97 u64 ending_lba;
98 gpt_entry_attributes attributes;
99 efi_char16_t partition_name[72 / sizeof (efi_char16_t)];
100 } __attribute__ ((packed)) gpt_entry;
101
102 typedef struct _legacy_mbr {
103 u8 boot_code[440];
104 u32 unique_mbr_signature;
105 u16 unknown;
106 struct partition partition_record[4];
107 u16 signature;
108 } __attribute__ ((packed)) legacy_mbr;
109
110 /* Functions */
111 extern int
112 efi_partition(struct gendisk *hd, struct block_device *bdev,
113 unsigned long first_sector, int first_part_minor);
114
115 #endif
Cache object: 777fcccb5ae5235ccb9ab2050986009f
|