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richardretanubun07f3d782008-09-26 11:13:22 -04001/*
2 * Copyright (C) 2008 RuggedCom, Inc.
3 * Richard Retanubun <RichardRetanubun@RuggedCom.com>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * See also linux/fs/partitions/efi.h
26 *
27 * EFI GUID Partition Table
28 * Per Intel EFI Specification v1.02
29 * http://developer.intel.com/technology/efi/efi.htm
30*/
31
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010032#include <linux/compiler.h>
33
richardretanubun07f3d782008-09-26 11:13:22 -040034#ifndef _DISK_PART_EFI_H
35#define _DISK_PART_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 1ULL
45#define GPT_ENTRY_NAME "gpt"
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010046#define GPT_ENTRY_NUMBERS 128
47#define GPT_ENTRY_SIZE 128
richardretanubun07f3d782008-09-26 11:13:22 -040048
49#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010050 ((efi_guid_t) \
51 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
52 (b) & 0xff, ((b) >> 8) & 0xff, \
53 (c) & 0xff, ((c) >> 8) & 0xff, \
54 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
richardretanubun07f3d782008-09-26 11:13:22 -040055
56#define PARTITION_SYSTEM_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010057 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
58 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
richardretanubun07f3d782008-09-26 11:13:22 -040059#define LEGACY_MBR_PARTITION_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010060 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
61 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
richardretanubun07f3d782008-09-26 11:13:22 -040062#define PARTITION_MSFT_RESERVED_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010063 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
64 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
richardretanubun07f3d782008-09-26 11:13:22 -040065#define PARTITION_BASIC_DATA_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010066 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
67 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
richardretanubun07f3d782008-09-26 11:13:22 -040068#define PARTITION_LINUX_RAID_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010069 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
70 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
richardretanubun07f3d782008-09-26 11:13:22 -040071#define PARTITION_LINUX_SWAP_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010072 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
73 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
richardretanubun07f3d782008-09-26 11:13:22 -040074#define PARTITION_LINUX_LVM_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010075 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
76 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
richardretanubun07f3d782008-09-26 11:13:22 -040077
78/* linux/include/efi.h */
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010079typedef u16 efi_char16_t;
richardretanubun07f3d782008-09-26 11:13:22 -040080
81typedef struct {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010082 u8 b[16];
richardretanubun07f3d782008-09-26 11:13:22 -040083} efi_guid_t;
84
85/* based on linux/include/genhd.h */
86struct partition {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010087 u8 boot_ind; /* 0x80 - active */
88 u8 head; /* starting head */
89 u8 sector; /* starting sector */
90 u8 cyl; /* starting cylinder */
91 u8 sys_ind; /* What partition type */
92 u8 end_head; /* end head */
93 u8 end_sector; /* end sector */
94 u8 end_cyl; /* end cylinder */
95 __le32 start_sect; /* starting sector counting from 0 */
96 __le32 nr_sects; /* nr of sectors in partition */
97} __packed;
richardretanubun07f3d782008-09-26 11:13:22 -040098
99/* based on linux/fs/partitions/efi.h */
100typedef struct _gpt_header {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100101 __le64 signature;
102 __le32 revision;
103 __le32 header_size;
104 __le32 header_crc32;
105 __le32 reserved1;
106 __le64 my_lba;
107 __le64 alternate_lba;
108 __le64 first_usable_lba;
109 __le64 last_usable_lba;
richardretanubun07f3d782008-09-26 11:13:22 -0400110 efi_guid_t disk_guid;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100111 __le64 partition_entry_lba;
112 __le32 num_partition_entries;
113 __le32 sizeof_partition_entry;
114 __le32 partition_entry_array_crc32;
115 u8 reserved2[GPT_BLOCK_SIZE - 92];
116} __packed gpt_header;
richardretanubun07f3d782008-09-26 11:13:22 -0400117
Stephen Warren13bf2f52012-10-08 08:14:36 +0000118typedef union _gpt_entry_attributes {
119 struct {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100120 u64 required_to_function:1;
121 u64 no_block_io_protocol:1;
122 u64 legacy_bios_bootable:1;
123 u64 reserved:45;
124 u64 type_guid_specific:16;
Stephen Warren13bf2f52012-10-08 08:14:36 +0000125 } fields;
126 unsigned long long raw;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100127} __packed gpt_entry_attributes;
richardretanubun07f3d782008-09-26 11:13:22 -0400128
Lei Wen6eecc032011-09-07 18:11:19 +0000129#define PARTNAME_SZ (72 / sizeof(efi_char16_t))
richardretanubun07f3d782008-09-26 11:13:22 -0400130typedef struct _gpt_entry {
131 efi_guid_t partition_type_guid;
132 efi_guid_t unique_partition_guid;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100133 __le64 starting_lba;
134 __le64 ending_lba;
richardretanubun07f3d782008-09-26 11:13:22 -0400135 gpt_entry_attributes attributes;
Lei Wen6eecc032011-09-07 18:11:19 +0000136 efi_char16_t partition_name[PARTNAME_SZ];
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100137} __packed gpt_entry;
richardretanubun07f3d782008-09-26 11:13:22 -0400138
139typedef struct _legacy_mbr {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100140 u8 boot_code[440];
141 __le32 unique_mbr_signature;
142 __le16 unknown;
richardretanubun07f3d782008-09-26 11:13:22 -0400143 struct partition partition_record[4];
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100144 __le16 signature;
145} __packed legacy_mbr;
richardretanubun07f3d782008-09-26 11:13:22 -0400146
Wolfgang Denk3cbd8232008-11-02 16:14:22 +0100147#endif /* _DISK_PART_EFI_H */