1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright 2012 Nexenta Systems, Inc. All rights reserved. 24 * Copyright 2014 Toomas Soome <tsoome@me.com> 25 * Copyright (c) 2019, Joyent, Inc. 26 */ 27 28 #ifndef _SYS_EFI_PARTITION_H 29 #define _SYS_EFI_PARTITION_H 30 31 #include <sys/uuid.h> 32 #include <sys/stddef.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* 39 * GUID Partition Table Header 40 */ 41 42 #define EFI_LABEL_SIZE 512 43 #define LEN_EFI_PAD (EFI_LABEL_SIZE - \ 44 ((5 * sizeof (diskaddr_t)) + \ 45 (7 * sizeof (uint_t)) + \ 46 (8 * sizeof (char)) + \ 47 (1 * (sizeof (struct uuid))))) 48 49 #define EFI_SIGNATURE 0x5452415020494645ULL 50 51 /* 52 * Although the EFI spec is clear that sizeof (efi_gpt_t) is a valid value 53 * (512), at least one EFI system (AMI v4.6.4.1) incorrectly expects this to be 54 * exactly the size of the structure defined in the spec, that is, 92. 55 * 56 * As the reserved section is never used, the modified value works fine 57 * everywhere else. 58 */ 59 #define EFI_HEADER_SIZE (offsetof(efi_gpt_t, efi_gpt_Reserved2)) 60 61 /* EFI Guid Partition Table Header -- little endian on-disk format */ 62 typedef struct efi_gpt { 63 uint64_t efi_gpt_Signature; 64 uint_t efi_gpt_Revision; 65 uint_t efi_gpt_HeaderSize; 66 uint_t efi_gpt_HeaderCRC32; 67 uint_t efi_gpt_Reserved1; 68 diskaddr_t efi_gpt_MyLBA; 69 diskaddr_t efi_gpt_AlternateLBA; 70 diskaddr_t efi_gpt_FirstUsableLBA; 71 diskaddr_t efi_gpt_LastUsableLBA; 72 struct uuid efi_gpt_DiskGUID; 73 diskaddr_t efi_gpt_PartitionEntryLBA; 74 uint_t efi_gpt_NumberOfPartitionEntries; 75 uint_t efi_gpt_SizeOfPartitionEntry; 76 uint_t efi_gpt_PartitionEntryArrayCRC32; 77 char efi_gpt_Reserved2[LEN_EFI_PAD]; 78 } efi_gpt_t; 79 80 /* EFI Guid Partition Entry Attributes -- little endian format */ 81 typedef struct efi_gpe_Attrs { 82 uint32_t PartitionAttrs :16, 83 Reserved2 :16; 84 uint32_t Reserved1 :31, 85 RequiredPartition :1; 86 } efi_gpe_Attrs_t; 87 88 /* 89 * 6a96237f-1dd2-11b2-99a6-080020736631 V_UNASSIGNED (not used as such) 90 * 6a82cb45-1dd2-11b2-99a6-080020736631 V_BOOT 91 * 6a85cf4d-1dd2-11b2-99a6-080020736631 V_ROOT 92 * 6a87c46f-1dd2-11b2-99a6-080020736631 V_SWAP 93 * 6a898cc3-1dd2-11b2-99a6-080020736631 V_USR 94 * 6a8b642b-1dd2-11b2-99a6-080020736631 V_BACKUP 95 * 6a8d2ac7-1dd2-11b2-99a6-080020736631 V_STAND (not used) 96 * 6a8ef2e9-1dd2-11b2-99a6-080020736631 V_VAR 97 * 6a90ba39-1dd2-11b2-99a6-080020736631 V_HOME 98 * 6a9283a5-1dd2-11b2-99a6-080020736631 V_ALTSCTR 99 * 6a945a3b-1dd2-11b2-99a6-080020736631 V_CACHE 100 */ 101 102 #define EFI_UNUSED { 0x00000000, 0x0000, 0x0000, 0x00, 0x00, \ 103 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } 104 #define EFI_RESV1 { 0x6a96237f, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 105 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 106 #define EFI_BOOT { 0x6a82cb45, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 107 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 108 #define EFI_ROOT { 0x6a85cf4d, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 109 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 110 #define EFI_SWAP { 0x6a87c46f, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 111 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 112 #define EFI_USR { 0x6a898cc3, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 113 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 114 #define EFI_BACKUP { 0x6a8b642b, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 115 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 116 #define EFI_RESV2 { 0x6a8d2ac7, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 117 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 118 #define EFI_VAR { 0x6a8ef2e9, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 119 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 120 #define EFI_HOME { 0x6a90ba39, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 121 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 122 #define EFI_ALTSCTR { 0x6a9283a5, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 123 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 124 #define EFI_RESERVED { 0x6a945a3b, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 125 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 126 #define EFI_SYSTEM { 0xC12A7328, 0xF81F, 0x11d2, 0xBA, 0x4B, \ 127 { 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B } } 128 #define EFI_LEGACY_MBR { 0x024DEE41, 0x33E7, 0x11d3, 0x9D, 0x69, \ 129 { 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F } } 130 #define EFI_SYMC_PUB { 0x6a9630d1, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 131 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 132 #define EFI_SYMC_CDS { 0x6a980767, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 133 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 134 #define EFI_MSFT_RESV { 0xE3C9E316, 0x0B5C, 0x4DB8, 0x81, 0x7D, \ 135 { 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE } } 136 #define EFI_DELL_BASIC { 0xebd0a0a2, 0xb9e5, 0x4433, 0x87, 0xc0, \ 137 { 0x68, 0xb6, 0xb7, 0x26, 0x99, 0xc7 } } 138 #define EFI_DELL_RAID { 0xa19d880f, 0x05fc, 0x4d3b, 0xa0, 0x06, \ 139 { 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e } } 140 #define EFI_DELL_SWAP { 0x0657fd6d, 0xa4ab, 0x43c4, 0x84, 0xe5, \ 141 { 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f } } 142 #define EFI_DELL_LVM { 0xe6d6d379, 0xf507, 0x44c2, 0xa2, 0x3c, \ 143 { 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28 } } 144 #define EFI_DELL_RESV { 0x8da63339, 0x0007, 0x60c0, 0xc4, 0x36, \ 145 { 0x08, 0x3a, 0xc8, 0x23, 0x09, 0x08 } } 146 #define EFI_AAPL_BOOT { 0x426F6F74, 0x0000, 0x11aa, 0xaa, 0x11, \ 147 { 0x00, 0x30, 0x65, 0x43, 0xec, 0xac } } 148 #define EFI_AAPL_HFS { 0x48465300, 0x0000, 0x11aa, 0xaa, 0x11, \ 149 { 0x00, 0x30, 0x65, 0x43, 0xec, 0xac } } 150 #define EFI_AAPL_UFS { 0x55465300, 0x0000, 0x11aa, 0xaa, 0x11, \ 151 { 0x00, 0x30, 0x65, 0x43, 0xec, 0xac } } 152 #define EFI_AAPL_ZFS { 0x6a898cc3, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 153 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 154 #define EFI_AAPL_APFS { 0x7c3457ef, 0x0000, 0x11aa, 0xaa, 0x11, \ 155 { 0x00, 0x30, 0x65, 0x43, 0xec, 0xac } } 156 #define EFI_FREEBSD_BOOT { 0x83bd6b9d, 0x7f41, 0x11dc, 0xbe, 0x0b, \ 157 { 0x00, 0x15, 0x60, 0xb8, 0x4f, 0x0f } } 158 #define EFI_FREEBSD_NANDFS { 0x74ba7dd9, 0xa689, 0x11e1, 0xbd, 0x04, \ 159 { 0x00, 0xe0, 0x81, 0x28, 0x6a, 0xcf } } 160 #define EFI_FREEBSD_SWAP { 0x516e7cb5, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 161 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 162 #define EFI_FREEBSD_UFS { 0x516e7cb6, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 163 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 164 #define EFI_FREEBSD_VINUM { 0x516e7cb8, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 165 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 166 #define EFI_FREEBSD_ZFS { 0x516e7cba, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 167 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 168 #define EFI_BIOS_BOOT { 0x21686148, 0x6449, 0x6e6f, 0x74, 0x4e, \ 169 { 0x65, 0x65, 0x64, 0x45, 0x46, 0x49 } } 170 171 /* minimum # of bytes for partition table entires, per EFI spec */ 172 #define EFI_MIN_ARRAY_SIZE (16 * 1024) 173 174 #define EFI_PART_NAME_LEN 36 175 176 /* size of the "reserved" partition, in blocks */ 177 #define EFI_MIN_RESV_SIZE (16 * 1024) 178 179 /* EFI Guid Partition Entry */ 180 typedef struct efi_gpe { 181 struct uuid efi_gpe_PartitionTypeGUID; 182 struct uuid efi_gpe_UniquePartitionGUID; 183 diskaddr_t efi_gpe_StartingLBA; 184 diskaddr_t efi_gpe_EndingLBA; 185 efi_gpe_Attrs_t efi_gpe_Attributes; 186 ushort_t efi_gpe_PartitionName[EFI_PART_NAME_LEN]; 187 } efi_gpe_t; 188 189 /* 190 * passed to the useful (we hope) routines (efi_alloc_and_read and 191 * efi_write) that take this VTOC-like struct. These routines handle 192 * converting this struct into the EFI struct, generate UUIDs and 193 * checksums, and perform any necessary byte-swapping to the on-disk 194 * format. 195 */ 196 /* Solaris library abstraction for EFI partitons */ 197 typedef struct dk_part { 198 diskaddr_t p_start; /* starting LBA */ 199 diskaddr_t p_size; /* size in blocks */ 200 struct uuid p_guid; /* partion type GUID */ 201 ushort_t p_tag; /* converted to part'n type GUID */ 202 ushort_t p_flag; /* attributes */ 203 char p_name[EFI_PART_NAME_LEN]; /* partition name */ 204 struct uuid p_uguid; /* unique partition GUID */ 205 uint_t p_resv[8]; /* future use - set to zero */ 206 } dk_part_t; 207 208 /* Solaris library abstraction for an EFI GPT */ 209 #define EFI_VERSION102 0x00010002 210 #define EFI_VERSION100 0x00010000 211 #define EFI_VERSION_CURRENT EFI_VERSION100 212 typedef struct dk_gpt { 213 uint_t efi_version; /* set to EFI_VERSION_CURRENT */ 214 uint_t efi_nparts; /* number of partitions below */ 215 uint_t efi_part_size; /* size of each partition entry */ 216 /* efi_part_size is unused */ 217 uint_t efi_lbasize; /* size of block in bytes */ 218 diskaddr_t efi_last_lba; /* last block on the disk */ 219 diskaddr_t efi_first_u_lba; /* first block after labels */ 220 diskaddr_t efi_last_u_lba; /* last block before backup labels */ 221 struct uuid efi_disk_uguid; /* unique disk GUID */ 222 uint_t efi_flags; 223 uint_t efi_reserved1; /* future use - set to zero */ 224 diskaddr_t efi_altern_lba; /* lba of alternate GPT header */ 225 uint_t efi_reserved[12]; /* future use - set to zero */ 226 struct dk_part efi_parts[1]; /* array of partitions */ 227 } dk_gpt_t; 228 229 /* possible values for "efi_flags" */ 230 #define EFI_GPT_PRIMARY_CORRUPT 0x1 /* primary label corrupt */ 231 232 /* the private ioctl between libefi and the driver */ 233 typedef struct dk_efi { 234 diskaddr_t dki_lba; /* starting block */ 235 len_t dki_length; /* length in bytes */ 236 union { 237 efi_gpt_t *_dki_data; 238 uint64_t _dki_data_64; 239 } dki_un; 240 #define dki_data dki_un._dki_data 241 #define dki_data_64 dki_un._dki_data_64 242 } dk_efi_t; 243 244 struct partition64 { 245 struct uuid p_type; 246 uint_t p_partno; 247 uint_t p_resv1; 248 diskaddr_t p_start; 249 diskaddr_t p_size; 250 }; 251 252 /* 253 * Number of EFI partitions 254 */ 255 #define EFI_NUMPAR 9 256 257 #ifndef _KERNEL 258 extern int efi_alloc_and_init(int, uint32_t, struct dk_gpt **); 259 extern int efi_alloc_and_read(int, struct dk_gpt **); 260 extern int efi_write(int, struct dk_gpt *); 261 extern void efi_free(struct dk_gpt *); 262 extern int efi_type(int); 263 extern void efi_err_check(struct dk_gpt *); 264 extern int efi_auto_sense(int fd, struct dk_gpt **); 265 extern int efi_use_whole_disk(int fd); 266 #endif 267 268 #ifdef __cplusplus 269 } 270 #endif 271 272 #endif /* _SYS_EFI_PARTITION_H */ 273