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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
25#ifndef FS_PART_EFI_H_INCLUDED
26#define FS_PART_EFI_H_INCLUDED
27
28#include <linux/types.h>
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>
35#include <linux/compiler.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_MBR_PROTECTIVE 1
42#define GPT_MBR_HYBRID 2
43
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
70typedef 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;
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 */
91} __packed gpt_header;
92
93typedef struct _gpt_entry_attributes {
94 u64 required_to_function:1;
95 u64 reserved:47;
96 u64 type_guid_specific:16;
97} __packed gpt_entry_attributes;
98
99typedef 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)];
106} __packed gpt_entry;
107
108typedef 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
122typedef struct _legacy_mbr {
123 u8 boot_code[440];
124 __le32 unique_mbr_signature;
125 __le16 unknown;
126 gpt_mbr_record partition_record[4];
127 __le16 signature;
128} __packed legacy_mbr;
129
130/* Functions */
131extern int efi_partition(struct parsed_partitions *state);
132
133#endif
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/************************************************************
3 * EFI GUID Partition Table
4 * Per Intel EFI Specification v1.02
5 * http://developer.intel.com/technology/efi/efi.htm
6 *
7 * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000
8 * Copyright 2000,2001 Dell Inc.
9 ************************************************************/
10
11#ifndef FS_PART_EFI_H_INCLUDED
12#define FS_PART_EFI_H_INCLUDED
13
14#include <linux/types.h>
15#include <linux/fs.h>
16#include <linux/kernel.h>
17#include <linux/major.h>
18#include <linux/string.h>
19#include <linux/efi.h>
20#include <linux/compiler.h>
21
22#define MSDOS_MBR_SIGNATURE 0xaa55
23#define EFI_PMBR_OSTYPE_EFI 0xEF
24#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
25
26#define GPT_MBR_PROTECTIVE 1
27#define GPT_MBR_HYBRID 2
28
29#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
30#define GPT_HEADER_REVISION_V1 0x00010000
31#define GPT_PRIMARY_PARTITION_TABLE_LBA 1
32
33#define PARTITION_SYSTEM_GUID \
34 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
35 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
36#define LEGACY_MBR_PARTITION_GUID \
37 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
38 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
39#define PARTITION_MSFT_RESERVED_GUID \
40 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
41 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
42#define PARTITION_BASIC_DATA_GUID \
43 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
44 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
45#define PARTITION_LINUX_RAID_GUID \
46 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
47 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
48#define PARTITION_LINUX_SWAP_GUID \
49 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
50 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
51#define PARTITION_LINUX_LVM_GUID \
52 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
53 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
54
55typedef struct _gpt_header {
56 __le64 signature;
57 __le32 revision;
58 __le32 header_size;
59 __le32 header_crc32;
60 __le32 reserved1;
61 __le64 my_lba;
62 __le64 alternate_lba;
63 __le64 first_usable_lba;
64 __le64 last_usable_lba;
65 efi_guid_t disk_guid;
66 __le64 partition_entry_lba;
67 __le32 num_partition_entries;
68 __le32 sizeof_partition_entry;
69 __le32 partition_entry_array_crc32;
70
71 /* The rest of the logical block is reserved by UEFI and must be zero.
72 * EFI standard handles this by:
73 *
74 * uint8_t reserved2[ BlockSize - 92 ];
75 */
76} __packed gpt_header;
77
78typedef struct _gpt_entry_attributes {
79 u64 required_to_function:1;
80 u64 reserved:47;
81 u64 type_guid_specific:16;
82} __packed gpt_entry_attributes;
83
84typedef struct _gpt_entry {
85 efi_guid_t partition_type_guid;
86 efi_guid_t unique_partition_guid;
87 __le64 starting_lba;
88 __le64 ending_lba;
89 gpt_entry_attributes attributes;
90 __le16 partition_name[72/sizeof(__le16)];
91} __packed gpt_entry;
92
93typedef struct _gpt_mbr_record {
94 u8 boot_indicator; /* unused by EFI, set to 0x80 for bootable */
95 u8 start_head; /* unused by EFI, pt start in CHS */
96 u8 start_sector; /* unused by EFI, pt start in CHS */
97 u8 start_track;
98 u8 os_type; /* EFI and legacy non-EFI OS types */
99 u8 end_head; /* unused by EFI, pt end in CHS */
100 u8 end_sector; /* unused by EFI, pt end in CHS */
101 u8 end_track; /* unused by EFI, pt end in CHS */
102 __le32 starting_lba; /* used by EFI - start addr of the on disk pt */
103 __le32 size_in_lba; /* used by EFI - size of pt in LBA */
104} __packed gpt_mbr_record;
105
106
107typedef struct _legacy_mbr {
108 u8 boot_code[440];
109 __le32 unique_mbr_signature;
110 __le16 unknown;
111 gpt_mbr_record partition_record[4];
112 __le16 signature;
113} __packed legacy_mbr;
114
115#endif