2 * Copyright (c) 2014 Juniper Networks, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/errno.h>
44 static mkimg_uuid_t gpt_uuid_efi = GPT_ENT_TYPE_EFI;
45 static mkimg_uuid_t gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD;
46 static mkimg_uuid_t gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT;
47 static mkimg_uuid_t gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS;
48 static mkimg_uuid_t gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP;
49 static mkimg_uuid_t gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS;
50 static mkimg_uuid_t gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
51 static mkimg_uuid_t gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
52 static mkimg_uuid_t gpt_uuid_mbr = GPT_ENT_TYPE_MBR;
53 static mkimg_uuid_t gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA;
55 static struct mkimg_alias gpt_aliases[] = {
56 { ALIAS_EFI, ALIAS_PTR2TYPE(&gpt_uuid_efi) },
57 { ALIAS_FREEBSD, ALIAS_PTR2TYPE(&gpt_uuid_freebsd) },
58 { ALIAS_FREEBSD_BOOT, ALIAS_PTR2TYPE(&gpt_uuid_freebsd_boot) },
59 { ALIAS_FREEBSD_NANDFS, ALIAS_PTR2TYPE(&gpt_uuid_freebsd_nandfs) },
60 { ALIAS_FREEBSD_SWAP, ALIAS_PTR2TYPE(&gpt_uuid_freebsd_swap) },
61 { ALIAS_FREEBSD_UFS, ALIAS_PTR2TYPE(&gpt_uuid_freebsd_ufs) },
62 { ALIAS_FREEBSD_VINUM, ALIAS_PTR2TYPE(&gpt_uuid_freebsd_vinum) },
63 { ALIAS_FREEBSD_ZFS, ALIAS_PTR2TYPE(&gpt_uuid_freebsd_zfs) },
64 { ALIAS_MBR, ALIAS_PTR2TYPE(&gpt_uuid_mbr) },
65 { ALIAS_NTFS, ALIAS_PTR2TYPE(&gpt_uuid_ms_basic_data) },
66 { ALIAS_NONE, 0 } /* Keep last! */
69 /* CRC32 code derived from work by Gary S. Brown. */
70 static const uint32_t crc32_tab[] = {
71 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
72 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
73 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
74 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
75 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
76 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
77 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
78 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
79 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
80 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
81 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
82 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
83 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
84 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
85 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
86 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
87 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
88 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
89 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
90 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
91 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
92 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
93 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
94 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
95 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
96 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
97 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
98 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
99 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
100 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
101 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
102 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
103 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
104 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
105 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
106 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
107 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
108 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
109 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
110 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
111 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
112 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
113 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
117 crc32(const void *buf, size_t sz)
119 const uint8_t *p = (const uint8_t *)buf;
123 crc = crc32_tab[(crc ^ *p++) & 0xff] ^ (crc >> 8);
132 ents = secsz / sizeof(struct gpt_ent);
133 return ((nparts + ents - 1) / ents);
137 gpt_metadata(u_int where, lba_t blk)
140 if (where == SCHEME_META_IMG_START || where == SCHEME_META_IMG_END) {
142 blk += (where == SCHEME_META_IMG_START) ? 2 : 1;
144 return (round_block(blk));
148 gpt_write_pmbr(lba_t blks, void *bootcode)
154 secs = (blks > UINT32_MAX) ? UINT32_MAX : (uint32_t)blks - 1;
156 pmbr = malloc(secsz);
159 if (bootcode != NULL) {
160 memcpy(pmbr, bootcode, DOSPARTOFF);
161 memset(pmbr + DOSPARTOFF, 0, secsz - DOSPARTOFF);
163 memset(pmbr, 0, secsz);
164 pmbr[DOSPARTOFF + 2] = 2;
165 pmbr[DOSPARTOFF + 4] = 0xee;
166 pmbr[DOSPARTOFF + 5] = 0xff;
167 pmbr[DOSPARTOFF + 6] = 0xff;
168 pmbr[DOSPARTOFF + 7] = 0xff;
169 le32enc(pmbr + DOSPARTOFF + 8, 1);
170 le32enc(pmbr + DOSPARTOFF + 12, secs);
171 le16enc(pmbr + DOSMAGICOFFSET, DOSMAGIC);
172 error = image_write(0, pmbr, 1);
177 static struct gpt_ent *
178 gpt_mktbl(u_int tblsz)
181 struct gpt_ent *tbl, *ent;
185 tbl = calloc(tblsz, secsz);
189 TAILQ_FOREACH(part, &partlist, link) {
190 ent = tbl + part->index;
191 mkimg_uuid_enc(&ent->ent_type, ALIAS_TYPE2PTR(part->type));
193 mkimg_uuid_enc(&ent->ent_uuid, &uuid);
194 le64enc(&ent->ent_lba_start, part->block);
195 le64enc(&ent->ent_lba_end, part->block + part->size - 1);
196 if (part->label != NULL) {
198 while ((c = part->label[idx]) != '\0') {
199 le16enc(ent->ent_name + idx, c);
208 gpt_write_hdr(struct gpt_hdr *hdr, uint64_t self, uint64_t alt, uint64_t tbl)
212 le64enc(&hdr->hdr_lba_self, self);
213 le64enc(&hdr->hdr_lba_alt, alt);
214 le64enc(&hdr->hdr_lba_table, tbl);
215 hdr->hdr_crc_self = 0;
216 crc = crc32(hdr, offsetof(struct gpt_hdr, padding));
217 le64enc(&hdr->hdr_crc_self, crc);
218 return (image_write(self, hdr, 1));
222 gpt_write(lba_t imgsz, void *bootcode)
232 error = gpt_write_pmbr(imgsz, bootcode);
238 tbl = gpt_mktbl(tblsz);
241 error = image_write(2, tbl, tblsz);
244 error = image_write(imgsz - (tblsz + 1), tbl, tblsz);
254 memset(hdr, 0, secsz);
255 memcpy(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig));
256 le32enc(&hdr->hdr_revision, GPT_HDR_REVISION);
257 le32enc(&hdr->hdr_size, offsetof(struct gpt_hdr, padding));
258 le64enc(&hdr->hdr_lba_start, 2 + tblsz);
259 le64enc(&hdr->hdr_lba_end, imgsz - tblsz - 2);
261 mkimg_uuid_enc(&hdr->hdr_uuid, &uuid);
262 le32enc(&hdr->hdr_entries, tblsz * secsz / sizeof(struct gpt_ent));
263 le32enc(&hdr->hdr_entsz, sizeof(struct gpt_ent));
264 crc = crc32(tbl, tblsz * secsz);
265 le32enc(&hdr->hdr_crc_table, crc);
266 error = gpt_write_hdr(hdr, 1, imgsz - 1, 2);
268 error = gpt_write_hdr(hdr, imgsz - 1, 1, imgsz - tblsz - 1);
276 static struct mkimg_scheme gpt_scheme = {
278 .description = "GUID Partition Table",
279 .aliases = gpt_aliases,
280 .metadata = gpt_metadata,
288 SCHEME_DEFINE(gpt_scheme);