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1/* $NetBSD: disklabel_gpt.h,v 1.15 2022/08/28 13:50:50 riastradh Exp $ */
2
3/*
4 * Copyright (c) 2002 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD: src/sys/sys/gpt.h,v 1.7 2004/08/02 18:46:52 marcel Exp $
29 */
30
31#ifndef _SYS_DISKLABEL_GPT_H_
32#define _SYS_DISKLABEL_GPT_H_
33
34/*
35 * Definitions for the EFI GUID Partition Table disk partitioning scheme.
36 *
37 * NOTE: As EFI is an Intel specification, all fields are stored in
38 * little-endian byte-order.
39 */
40
41/*
42 * GUID Partition Table Header
43 */
44struct gpt_hdr {
45 int8_t hdr_sig[8]; /* identifies GUID Partition Table */
46 uint32_t hdr_revision; /* GPT specification revision */
47 uint32_t hdr_size; /* size of GPT Header */
48 uint32_t hdr_crc_self; /* CRC32 of GPT Header */
49 uint32_t hdr__rsvd0; /* must be zero */
50 uint64_t hdr_lba_self; /* LBA that contains this Header */
51 uint64_t hdr_lba_alt; /* LBA of backup GPT Header */
52 uint64_t hdr_lba_start; /* first LBA usable for partitions */
53 uint64_t hdr_lba_end; /* last LBA usable for partitions */
54 uint8_t hdr_guid[16]; /* GUID to identify the disk */
55 uint64_t hdr_lba_table; /* first LBA of GPE array */
56 uint32_t hdr_entries; /* number of entries in GPE array */
57 uint32_t hdr_entsz; /* size of each GPE */
58 uint32_t hdr_crc_table; /* CRC32 of GPE array */
59 /*
60 * The remainder of the block that contains the GPT Header
61 * is reserved by EFI for future GPT Header expansion, and
62 * must be zero.
63 */
64};
65
66#define GPT_HDR_SIG "EFI PART"
67#define GPT_HDR_REVISION 0x00010000 /* 1.0 */
68
69#define GPT_HDR_BLKNO 1
70
71#define GPT_HDR_SIZE 0x5c
72
73/*
74 * GUID Partition Entry
75 */
76struct gpt_ent {
77 uint8_t ent_type[16]; /* partition type GUID */
78 uint8_t ent_guid[16]; /* unique partition GUID */
79 uint64_t ent_lba_start; /* start of partition */
80 uint64_t ent_lba_end; /* end of partition */
81 uint64_t ent_attr; /* partition attributes */
82 uint16_t ent_name[36]; /* partition name in UCS-2 */
83};
84
85#define GPT_ENT_ATTR_REQUIRED_PARTITION (1ULL << 0)
86 /* required for platform to function */
87#define GPT_ENT_ATTR_NO_BLOCK_IO_PROTOCOL (1ULL << 1)
88 /* UEFI won't recognize file system */
89#define GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE (1ULL << 2)
90 /* legacy BIOS boot partition */
91/* The following three entries are from FreeBSD. */
92#define GPT_ENT_ATTR_BOOTME (1ULL << 59)
93 /* indicates a bootable partition */
94#define GPT_ENT_ATTR_BOOTONCE (1ULL << 58)
95 /* attempt to boot this partition only once */
96#define GPT_ENT_ATTR_BOOTFAILED (1ULL << 57)
97 /* partition that was marked bootonce but failed to boot */
98
99/*
100 * Partition types defined by the EFI specification:
101 *
102 * GPT_ENT_TYPE_UNUSED Unused Entry
103 * GPT_ENT_TYPE_EFI EFI System Partition
104 * GPT_ENT_TYPE_MBR Partition containing legacy MBR
105 */
106#define GPT_ENT_TYPE_UNUSED \
107 {0x00000000,0x0000,0x0000,0x00,0x00,{0x00,0x00,0x00,0x00,0x00,0x00}}
108#define GPT_ENT_TYPE_EFI \
109 {0xc12a7328,0xf81f,0x11d2,0xba,0x4b,{0x00,0xa0,0xc9,0x3e,0xc9,0x3b}}
110#define GPT_ENT_TYPE_MBR \
111 {0x024dee41,0x33e7,0x11d3,0x9d,0x69,{0x00,0x08,0xc7,0x81,0xf3,0x9f}}
112
113/*
114 * Partition types defined by other operating systems.
115 */
116#define GPT_ENT_TYPE_NETBSD_SWAP \
117 {0x49f48d32,0xb10e,0x11dc,0xb9,0x9b,{0x00,0x19,0xd1,0x87,0x96,0x48}}
118#define GPT_ENT_TYPE_NETBSD_FFS \
119 {0x49f48d5a,0xb10e,0x11dc,0xb9,0x9b,{0x00,0x19,0xd1,0x87,0x96,0x48}}
120#define GPT_ENT_TYPE_NETBSD_LFS \
121 {0x49f48d82,0xb10e,0x11dc,0xb9,0x9b,{0x00,0x19,0xd1,0x87,0x96,0x48}}
122#define GPT_ENT_TYPE_NETBSD_RAIDFRAME \
123 {0x49f48daa,0xb10e,0x11dc,0xb9,0x9b,{0x00,0x19,0xd1,0x87,0x96,0x48}}
124#define GPT_ENT_TYPE_NETBSD_CCD \
125 {0x2db519c4,0xb10f,0x11dc,0xb9,0x9b,{0x00,0x19,0xd1,0x87,0x96,0x48}}
126#define GPT_ENT_TYPE_NETBSD_CGD \
127 {0x2db519ec,0xb10f,0x11dc,0xb9,0x9b,{0x00,0x19,0xd1,0x87,0x96,0x48}}
128
129#define GPT_ENT_TYPE_FREEBSD \
130 {0x516e7cb4,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
131#define GPT_ENT_TYPE_FREEBSD_SWAP \
132 {0x516e7cb5,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
133#define GPT_ENT_TYPE_FREEBSD_UFS \
134 {0x516e7cb6,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
135#define GPT_ENT_TYPE_FREEBSD_VINUM \
136 {0x516e7cb8,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
137#define GPT_ENT_TYPE_FREEBSD_ZFS \
138 {0x516e7cba,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
139/*
140 * The following are unused but documented here to avoid reuse.
141 *
142 * GPT_ENT_TYPE_FREEBSD_UFS2 \
143 * {0x516e7cb7,0x6ecf,0x11d6,0x8f,0xf8,{0x00,0x02,0x2d,0x09,0x71,0x2b}}
144 */
145
146#define GPT_ENT_TYPE_MS_RESERVED \
147 {0xe3c9e316,0x0b5c,0x4db8,0x81,0x7d,{0xf9,0x2d,0xf0,0x02,0x15,0xae}}
148#define GPT_ENT_TYPE_MS_BASIC_DATA \
149 {0xebd0a0a2,0xb9e5,0x4433,0x87,0xc0,{0x68,0xb6,0xb7,0x26,0x99,0xc7}}
150#define GPT_ENT_TYPE_MS_LDM_METADATA \
151 {0x5808c8aa,0x7e8f,0x42e0,0x85,0xd2,{0xe1,0xe9,0x04,0x34,0xcf,0xb3}}
152#define GPT_ENT_TYPE_MS_LDM_DATA \
153 {0xaf9b60a0,0x1431,0x4f62,0xbc,0x68,{0x33,0x11,0x71,0x4a,0x69,0xad}}
154
155/*
156 * Linux originally used GPT_ENT_TYPE_MS_BASIC_DATA in place of
157 * GPT_ENT_TYPE_LINUX_DATA.
158 */
159#define GPT_ENT_TYPE_LINUX_DATA \
160 {0x0fc63daf,0x8483,0x4772,0x8e,0x79,{0x3d,0x69,0xd8,0x47,0x7d,0xe4}}
161#define GPT_ENT_TYPE_LINUX_RAID \
162 {0xa19d880f,0x05fc,0x4d3b,0xa0,0x06,{0x74,0x3f,0x0f,0x84,0x91,0x1e}}
163#define GPT_ENT_TYPE_LINUX_SWAP \
164 {0x0657fd6d,0xa4ab,0x43c4,0x84,0xe5,{0x09,0x33,0xc8,0x4b,0x4f,0x4f}}
165#define GPT_ENT_TYPE_LINUX_LVM \
166 {0xe6d6d379,0xf507,0x44c2,0xa2,0x3c,{0x23,0x8f,0x2a,0x3d,0xf9,0x28}}
167
168#define GPT_ENT_TYPE_APPLE_HFS \
169 {0x48465300,0x0000,0x11aa,0xaa,0x11,{0x00,0x30,0x65,0x43,0xec,0xac}}
170#define GPT_ENT_TYPE_APPLE_UFS \
171 {0x55465300,0x0000,0x11aa,0xaa,0x11,{0x00,0x30,0x65,0x43,0xec,0xac}}
172
173/*
174 * Used by GRUB 2.
175 */
176#define GPT_ENT_TYPE_BIOS \
177 {0x21686148,0x6449,0x6e6f,0x74,0x4e,{0x65,0x65,0x64,0x45,0x46,0x49}}
178
179/*
180 * VMware types.
181 */
182#define GPT_ENT_TYPE_VMWARE_VMKCORE \
183 {0x9D275380,0x40AD,0x11DB,0xBF,0x97,{0x00,0x0C,0x29,0x11,0xD1,0xB8}}
184#define GPT_ENT_TYPE_VMWARE_VMFS \
185 {0xAA31E02A,0x400F,0x11DB,0x95,0x90,{0x00,0x0C,0x29,0x11,0xD1,0xB8}}
186#define GPT_ENT_TYPE_VMWARE_RESERVED \
187 {0x9198EFFC,0x31C0,0x11DB,0x8F,0x78,{0x00,0x0C,0x29,0x11,0xD1,0xB8}}
188
189#endif /* _SYS_DISKLABEL_GPT_H_ */