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 */ 25 26 #ifndef _SYS_EFI_PARTITION_H 27 #define _SYS_EFI_PARTITION_H 28 29 #include <sys/uuid.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * GUID Partition Table Header 37 */ 38 39 #define EFI_LABEL_SIZE 512 40 #define LEN_EFI_PAD (EFI_LABEL_SIZE - \ 41 ((5 * sizeof (diskaddr_t)) + \ 42 (7 * sizeof (uint_t)) + \ 43 (8 * sizeof (char)) + \ 44 (1 * (sizeof (struct uuid))))) 45 46 #define EFI_SIGNATURE 0x5452415020494645ULL 47 48 /* EFI Guid Partition Table Header -- little endian on-disk format */ 49 typedef struct efi_gpt { 50 uint64_t efi_gpt_Signature; 51 uint_t efi_gpt_Revision; 52 uint_t efi_gpt_HeaderSize; 53 uint_t efi_gpt_HeaderCRC32; 54 uint_t efi_gpt_Reserved1; 55 diskaddr_t efi_gpt_MyLBA; 56 diskaddr_t efi_gpt_AlternateLBA; 57 diskaddr_t efi_gpt_FirstUsableLBA; 58 diskaddr_t efi_gpt_LastUsableLBA; 59 struct uuid efi_gpt_DiskGUID; 60 diskaddr_t efi_gpt_PartitionEntryLBA; 61 uint_t efi_gpt_NumberOfPartitionEntries; 62 uint_t efi_gpt_SizeOfPartitionEntry; 63 uint_t efi_gpt_PartitionEntryArrayCRC32; 64 char efi_gpt_Reserved2[LEN_EFI_PAD]; 65 } efi_gpt_t; 66 67 /* EFI Guid Partition Entry Attributes -- little endian format */ 68 typedef struct efi_gpe_Attrs { 69 uint32_t PartitionAttrs :16, 70 Reserved2 :16; 71 uint32_t Reserved1 :31, 72 RequiredPartition :1; 73 } efi_gpe_Attrs_t; 74 75 /* 76 * 6a96237f-1dd2-11b2-99a6-080020736631 V_UNASSIGNED (not used as such) 77 * 6a82cb45-1dd2-11b2-99a6-080020736631 V_BOOT 78 * 6a85cf4d-1dd2-11b2-99a6-080020736631 V_ROOT 79 * 6a87c46f-1dd2-11b2-99a6-080020736631 V_SWAP 80 * 6a898cc3-1dd2-11b2-99a6-080020736631 V_USR 81 * 6a8b642b-1dd2-11b2-99a6-080020736631 V_BACKUP 82 * 6a8d2ac7-1dd2-11b2-99a6-080020736631 V_STAND (not used) 83 * 6a8ef2e9-1dd2-11b2-99a6-080020736631 V_VAR 84 * 6a90ba39-1dd2-11b2-99a6-080020736631 V_HOME 85 * 6a9283a5-1dd2-11b2-99a6-080020736631 V_ALTSCTR 86 * 6a945a3b-1dd2-11b2-99a6-080020736631 V_CACHE 87 */ 88 89 #define EFI_UNUSED { 0x00000000, 0x0000, 0x0000, 0x00, 0x00, \ 90 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } 91 #define EFI_RESV1 { 0x6a96237f, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 92 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 93 #define EFI_BOOT { 0x6a82cb45, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 94 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 95 #define EFI_ROOT { 0x6a85cf4d, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 96 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 97 #define EFI_SWAP { 0x6a87c46f, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 98 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 99 #define EFI_USR { 0x6a898cc3, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 100 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 101 #define EFI_BACKUP { 0x6a8b642b, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 102 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 103 #define EFI_RESV2 { 0x6a8d2ac7, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 104 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 105 #define EFI_VAR { 0x6a8ef2e9, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 106 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 107 #define EFI_HOME { 0x6a90ba39, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 108 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 109 #define EFI_ALTSCTR { 0x6a9283a5, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 110 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 111 #define EFI_RESERVED { 0x6a945a3b, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 112 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 113 #define EFI_SYSTEM { 0xC12A7328, 0xF81F, 0x11d2, 0xBA, 0x4B, \ 114 { 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B } } 115 #define EFI_LEGACY_MBR { 0x024DEE41, 0x33E7, 0x11d3, 0x9D, 0x69, \ 116 { 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F } } 117 #define EFI_SYMC_PUB { 0x6a9630d1, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 118 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 119 #define EFI_SYMC_CDS { 0x6a980767, 0x1dd2, 0x11b2, 0x99, 0xa6, \ 120 { 0x08, 0x00, 0x20, 0x73, 0x66, 0x31 } } 121 #define EFI_MSFT_RESV { 0xE3C9E316, 0x0B5C, 0x4DB8, 0x81, 0x7D, \ 122 { 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE } } 123 #define EFI_DELL_BASIC { 0xebd0a0a2, 0xb9e5, 0x4433, 0x87, 0xc0, \ 124 { 0x68, 0xb6, 0xb7, 0x26, 0x99, 0xc7 } } 125 #define EFI_DELL_RAID { 0xa19d880f, 0x05fc, 0x4d3b, 0xa0, 0x06, \ 126 { 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e } } 127 #define EFI_DELL_SWAP { 0x0657fd6d, 0xa4ab, 0x43c4, 0x84, 0xe5, \ 128 { 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f } } 129 #define EFI_DELL_LVM { 0xe6d6d379, 0xf507, 0x44c2, 0xa2, 0x3c, \ 130 { 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28 } } 131 #define EFI_DELL_RESV { 0x8da63339, 0x0007, 0x60c0, 0xc4, 0x36, \ 132 { 0x08, 0x3a, 0xc8, 0x23, 0x09, 0x08 } } 133 #define EFI_AAPL_HFS { 0x48465300, 0x0000, 0x11aa, 0xaa, 0x11, \ 134 { 0x00, 0x30, 0x65, 0x43, 0xec, 0xac } } 135 #define EFI_AAPL_UFS { 0x55465300, 0x0000, 0x11aa, 0xaa, 0x11, \ 136 { 0x00, 0x30, 0x65, 0x43, 0xec, 0xac } } 137 #define EFI_FREEBSD_BOOT { 0x83bd6b9d, 0x7f41, 0x11dc, 0xbe, 0x0b, \ 138 { 0x00, 0x15, 0x60, 0xb8, 0x4f, 0x0f } } 139 #define EFI_FREEBSD_SWAP { 0x516e7cb5, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 140 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 141 #define EFI_FREEBSD_UFS { 0x516e7cb6, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 142 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 143 #define EFI_FREEBSD_VINUM { 0x516e7cb8, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 144 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 145 #define EFI_FREEBSD_ZFS { 0x516e7cba, 0x6ecf, 0x11d6, 0x8f, 0xf8, \ 146 { 0x00, 0x02, 0x2d, 0x09, 0x71, 0x2b } } 147 148 /* minimum # of bytes for partition table entires, per EFI spec */ 149 #define EFI_MIN_ARRAY_SIZE (16 * 1024) 150 151 #define EFI_PART_NAME_LEN 36 152 153 /* size of the "reserved" partition, in blocks */ 154 #define EFI_MIN_RESV_SIZE (16 * 1024) 155 156 /* EFI Guid Partition Entry */ 157 typedef struct efi_gpe { 158 struct uuid efi_gpe_PartitionTypeGUID; 159 struct uuid efi_gpe_UniquePartitionGUID; 160 diskaddr_t efi_gpe_StartingLBA; 161 diskaddr_t efi_gpe_EndingLBA; 162 efi_gpe_Attrs_t efi_gpe_Attributes; 163 ushort_t efi_gpe_PartitionName[EFI_PART_NAME_LEN]; 164 } efi_gpe_t; 165 166 /* 167 * passed to the useful (we hope) routines (efi_alloc_and_read and 168 * efi_write) that take this VTOC-like struct. These routines handle 169 * converting this struct into the EFI struct, generate UUIDs and 170 * checksums, and perform any necessary byte-swapping to the on-disk 171 * format. 172 */ 173 /* Solaris library abstraction for EFI partitons */ 174 typedef struct dk_part { 175 diskaddr_t p_start; /* starting LBA */ 176 diskaddr_t p_size; /* size in blocks */ 177 struct uuid p_guid; /* partion type GUID */ 178 ushort_t p_tag; /* converted to part'n type GUID */ 179 ushort_t p_flag; /* attributes */ 180 char p_name[EFI_PART_NAME_LEN]; /* partition name */ 181 struct uuid p_uguid; /* unique partition GUID */ 182 uint_t p_resv[8]; /* future use - set to zero */ 183 } dk_part_t; 184 185 /* Solaris library abstraction for an EFI GPT */ 186 #define EFI_VERSION102 0x00010002 187 #define EFI_VERSION100 0x00010000 188 #define EFI_VERSION_CURRENT EFI_VERSION100 189 typedef struct dk_gpt { 190 uint_t efi_version; /* set to EFI_VERSION_CURRENT */ 191 uint_t efi_nparts; /* number of partitions below */ 192 uint_t efi_part_size; /* size of each partition entry */ 193 /* efi_part_size is unused */ 194 uint_t efi_lbasize; /* size of block in bytes */ 195 diskaddr_t efi_last_lba; /* last block on the disk */ 196 diskaddr_t efi_first_u_lba; /* first block after labels */ 197 diskaddr_t efi_last_u_lba; /* last block before backup labels */ 198 struct uuid efi_disk_uguid; /* unique disk GUID */ 199 uint_t efi_flags; 200 uint_t efi_reserved1; /* future use - set to zero */ 201 diskaddr_t efi_altern_lba; /* lba of alternate GPT header */ 202 uint_t efi_reserved[12]; /* future use - set to zero */ 203 struct dk_part efi_parts[1]; /* array of partitions */ 204 } dk_gpt_t; 205 206 /* possible values for "efi_flags" */ 207 #define EFI_GPT_PRIMARY_CORRUPT 0x1 /* primary label corrupt */ 208 209 /* the private ioctl between libefi and the driver */ 210 typedef struct dk_efi { 211 diskaddr_t dki_lba; /* starting block */ 212 len_t dki_length; /* length in bytes */ 213 union { 214 efi_gpt_t *_dki_data; 215 uint64_t _dki_data_64; 216 } dki_un; 217 #define dki_data dki_un._dki_data 218 #define dki_data_64 dki_un._dki_data_64 219 } dk_efi_t; 220 221 struct partition64 { 222 struct uuid p_type; 223 uint_t p_partno; 224 uint_t p_resv1; 225 diskaddr_t p_start; 226 diskaddr_t p_size; 227 }; 228 229 /* 230 * Number of EFI partitions 231 */ 232 #define EFI_NUMPAR 9 233 234 #ifndef _KERNEL 235 extern int efi_alloc_and_init(int, uint32_t, struct dk_gpt **); 236 extern int efi_alloc_and_read(int, struct dk_gpt **); 237 extern int efi_write(int, struct dk_gpt *); 238 extern void efi_free(struct dk_gpt *); 239 extern int efi_type(int); 240 extern void efi_err_check(struct dk_gpt *); 241 extern int efi_auto_sense(int fd, struct dk_gpt **); 242 extern int efi_use_whole_disk(int fd); 243 #endif 244 245 #ifdef __cplusplus 246 } 247 #endif 248 249 #endif /* _SYS_EFI_PARTITION_H */ 250