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Commit | Line | Data |
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07f3d789 | 1 | /* |
2 | * Copyright (C) 2008 RuggedCom, Inc. | |
3 | * Richard Retanubun <RichardRetanubun@RuggedCom.com> | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
07f3d789 | 6 | */ |
7 | ||
8 | /* | |
e04350d2 SR |
9 | * NOTE: |
10 | * when CONFIG_SYS_64BIT_LBA is not defined, lbaint_t is 32 bits; this | |
11 | * limits the maximum size of addressable storage to < 2 Terra Bytes | |
07f3d789 | 12 | */ |
8faefadb | 13 | #include <asm/unaligned.h> |
07f3d789 | 14 | #include <common.h> |
15 | #include <command.h> | |
16 | #include <ide.h> | |
e48f3741 | 17 | #include <inttypes.h> |
07f3d789 | 18 | #include <malloc.h> |
cf92e05c | 19 | #include <memalign.h> |
fae2bf22 | 20 | #include <part_efi.h> |
6eecc030 | 21 | #include <linux/ctype.h> |
07f3d789 | 22 | |
40684ddb ŁM |
23 | DECLARE_GLOBAL_DATA_PTR; |
24 | ||
2c1af9dc | 25 | #ifdef HAVE_BLOCK_DEVICE |
07f3d789 | 26 | /** |
27 | * efi_crc32() - EFI version of crc32 function | |
28 | * @buf: buffer to calculate crc32 of | |
29 | * @len - length of buf | |
30 | * | |
31 | * Description: Returns EFI-style CRC32 value for @buf | |
32 | */ | |
fae2bf22 | 33 | static inline u32 efi_crc32(const void *buf, u32 len) |
07f3d789 | 34 | { |
35 | return crc32(0, buf, len); | |
36 | } | |
37 | ||
38 | /* | |
39 | * Private function prototypes | |
40 | */ | |
41 | ||
42 | static int pmbr_part_valid(struct partition *part); | |
43 | static int is_pmbr_valid(legacy_mbr * mbr); | |
4101f687 | 44 | static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, |
e04350d2 | 45 | gpt_header *pgpt_head, gpt_entry **pgpt_pte); |
4101f687 SG |
46 | static gpt_entry *alloc_read_gpt_entries(struct blk_desc *dev_desc, |
47 | gpt_header *pgpt_head); | |
07f3d789 | 48 | static int is_pte_valid(gpt_entry * pte); |
49 | ||
6eecc030 LW |
50 | static char *print_efiname(gpt_entry *pte) |
51 | { | |
52 | static char name[PARTNAME_SZ + 1]; | |
53 | int i; | |
54 | for (i = 0; i < PARTNAME_SZ; i++) { | |
55 | u8 c; | |
56 | c = pte->partition_name[i] & 0xff; | |
57 | c = (c && !isprint(c)) ? '.' : c; | |
58 | name[i] = c; | |
59 | } | |
60 | name[PARTNAME_SZ] = 0; | |
61 | return name; | |
62 | } | |
63 | ||
b4414f4a SW |
64 | static efi_guid_t system_guid = PARTITION_SYSTEM_GUID; |
65 | ||
66 | static inline int is_bootable(gpt_entry *p) | |
67 | { | |
68 | return p->attributes.fields.legacy_bios_bootable || | |
69 | !memcmp(&(p->partition_type_guid), &system_guid, | |
70 | sizeof(efi_guid_t)); | |
71 | } | |
72 | ||
e1f6b0a0 SR |
73 | static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba, |
74 | lbaint_t lastlba) | |
75 | { | |
76 | uint32_t crc32_backup = 0; | |
77 | uint32_t calc_crc32; | |
78 | ||
79 | /* Check the GPT header signature */ | |
80 | if (le64_to_cpu(gpt_h->signature) != GPT_HEADER_SIGNATURE) { | |
81 | printf("%s signature is wrong: 0x%llX != 0x%llX\n", | |
82 | "GUID Partition Table Header", | |
83 | le64_to_cpu(gpt_h->signature), | |
84 | GPT_HEADER_SIGNATURE); | |
85 | return -1; | |
86 | } | |
87 | ||
88 | /* Check the GUID Partition Table CRC */ | |
89 | memcpy(&crc32_backup, &gpt_h->header_crc32, sizeof(crc32_backup)); | |
90 | memset(&gpt_h->header_crc32, 0, sizeof(gpt_h->header_crc32)); | |
91 | ||
92 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
93 | le32_to_cpu(gpt_h->header_size)); | |
94 | ||
95 | memcpy(&gpt_h->header_crc32, &crc32_backup, sizeof(crc32_backup)); | |
96 | ||
97 | if (calc_crc32 != le32_to_cpu(crc32_backup)) { | |
98 | printf("%s CRC is wrong: 0x%x != 0x%x\n", | |
99 | "GUID Partition Table Header", | |
100 | le32_to_cpu(crc32_backup), calc_crc32); | |
101 | return -1; | |
102 | } | |
103 | ||
104 | /* | |
105 | * Check that the my_lba entry points to the LBA that contains the GPT | |
106 | */ | |
107 | if (le64_to_cpu(gpt_h->my_lba) != lba) { | |
108 | printf("GPT: my_lba incorrect: %llX != " LBAF "\n", | |
109 | le64_to_cpu(gpt_h->my_lba), | |
110 | lba); | |
111 | return -1; | |
112 | } | |
113 | ||
114 | /* | |
115 | * Check that the first_usable_lba and that the last_usable_lba are | |
116 | * within the disk. | |
117 | */ | |
118 | if (le64_to_cpu(gpt_h->first_usable_lba) > lastlba) { | |
119 | printf("GPT: first_usable_lba incorrect: %llX > " LBAF "\n", | |
120 | le64_to_cpu(gpt_h->first_usable_lba), lastlba); | |
121 | return -1; | |
122 | } | |
123 | if (le64_to_cpu(gpt_h->last_usable_lba) > lastlba) { | |
124 | printf("GPT: last_usable_lba incorrect: %llX > " LBAF "\n", | |
125 | le64_to_cpu(gpt_h->last_usable_lba), lastlba); | |
126 | return -1; | |
127 | } | |
128 | ||
129 | debug("GPT: first_usable_lba: %llX last_usable_lba: %llX last lba: " | |
130 | LBAF "\n", le64_to_cpu(gpt_h->first_usable_lba), | |
131 | le64_to_cpu(gpt_h->last_usable_lba), lastlba); | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
136 | static int validate_gpt_entries(gpt_header *gpt_h, gpt_entry *gpt_e) | |
137 | { | |
138 | uint32_t calc_crc32; | |
139 | ||
140 | /* Check the GUID Partition Table Entry Array CRC */ | |
141 | calc_crc32 = efi_crc32((const unsigned char *)gpt_e, | |
142 | le32_to_cpu(gpt_h->num_partition_entries) * | |
143 | le32_to_cpu(gpt_h->sizeof_partition_entry)); | |
144 | ||
145 | if (calc_crc32 != le32_to_cpu(gpt_h->partition_entry_array_crc32)) { | |
146 | printf("%s: 0x%x != 0x%x\n", | |
147 | "GUID Partition Table Entry Array CRC is wrong", | |
148 | le32_to_cpu(gpt_h->partition_entry_array_crc32), | |
149 | calc_crc32); | |
150 | return -1; | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static void prepare_backup_gpt_header(gpt_header *gpt_h) | |
157 | { | |
158 | uint32_t calc_crc32; | |
159 | uint64_t val; | |
160 | ||
161 | /* recalculate the values for the Backup GPT Header */ | |
162 | val = le64_to_cpu(gpt_h->my_lba); | |
163 | gpt_h->my_lba = gpt_h->alternate_lba; | |
164 | gpt_h->alternate_lba = cpu_to_le64(val); | |
0ff7e585 SR |
165 | gpt_h->partition_entry_lba = |
166 | cpu_to_le64(le64_to_cpu(gpt_h->last_usable_lba) + 1); | |
e1f6b0a0 SR |
167 | gpt_h->header_crc32 = 0; |
168 | ||
169 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
170 | le32_to_cpu(gpt_h->header_size)); | |
171 | gpt_h->header_crc32 = cpu_to_le32(calc_crc32); | |
172 | } | |
173 | ||
40684ddb | 174 | #ifdef CONFIG_EFI_PARTITION |
07f3d789 | 175 | /* |
176 | * Public Functions (include/part.h) | |
177 | */ | |
178 | ||
084bf4c2 | 179 | void part_print_efi(struct blk_desc *dev_desc) |
07f3d789 | 180 | { |
ae1768a7 | 181 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); |
deb5ca80 | 182 | gpt_entry *gpt_pte = NULL; |
07f3d789 | 183 | int i = 0; |
f07cd2c4 | 184 | char uuid[37]; |
a96a0e61 | 185 | unsigned char *uuid_bin; |
07f3d789 | 186 | |
07f3d789 | 187 | /* This function validates AND fills in the GPT header and PTE */ |
188 | if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
4715a811 | 189 | gpt_head, &gpt_pte) != 1) { |
df70b1c2 | 190 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); |
ae95fad5 SR |
191 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), |
192 | gpt_head, &gpt_pte) != 1) { | |
193 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
194 | __func__); | |
195 | return; | |
196 | } else { | |
197 | printf("%s: *** Using Backup GPT ***\n", | |
198 | __func__); | |
199 | } | |
07f3d789 | 200 | } |
201 | ||
deb5ca80 | 202 | debug("%s: gpt-entry at %p\n", __func__, gpt_pte); |
07f3d789 | 203 | |
788a8c1f | 204 | printf("Part\tStart LBA\tEnd LBA\t\tName\n"); |
13bf2f55 | 205 | printf("\tAttributes\n"); |
d718ded0 PM |
206 | printf("\tType GUID\n"); |
207 | printf("\tPartition GUID\n"); | |
f07cd2c4 | 208 | |
fae2bf22 | 209 | for (i = 0; i < le32_to_cpu(gpt_head->num_partition_entries); i++) { |
38a3021e SW |
210 | /* Stop at the first non valid PTE */ |
211 | if (!is_pte_valid(&gpt_pte[i])) | |
212 | break; | |
213 | ||
788a8c1f | 214 | printf("%3d\t0x%08llx\t0x%08llx\t\"%s\"\n", (i + 1), |
fae2bf22 CHP |
215 | le64_to_cpu(gpt_pte[i].starting_lba), |
216 | le64_to_cpu(gpt_pte[i].ending_lba), | |
788a8c1f | 217 | print_efiname(&gpt_pte[i])); |
13bf2f55 | 218 | printf("\tattrs:\t0x%016llx\n", gpt_pte[i].attributes.raw); |
a96a0e61 | 219 | uuid_bin = (unsigned char *)gpt_pte[i].partition_type_guid.b; |
d718ded0 | 220 | uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); |
f07cd2c4 | 221 | printf("\ttype:\t%s\n", uuid); |
bcb41dca PD |
222 | #ifdef CONFIG_PARTITION_TYPE_GUID |
223 | if (!uuid_guid_get_str(uuid_bin, uuid)) | |
224 | printf("\ttype:\t%s\n", uuid); | |
225 | #endif | |
a96a0e61 | 226 | uuid_bin = (unsigned char *)gpt_pte[i].unique_partition_guid.b; |
d718ded0 PM |
227 | uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); |
228 | printf("\tguid:\t%s\n", uuid); | |
07f3d789 | 229 | } |
230 | ||
231 | /* Remember to free pte */ | |
deb5ca80 | 232 | free(gpt_pte); |
07f3d789 | 233 | return; |
234 | } | |
235 | ||
3e8bd469 SG |
236 | int part_get_info_efi(struct blk_desc *dev_desc, int part, |
237 | disk_partition_t *info) | |
07f3d789 | 238 | { |
ae1768a7 | 239 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); |
deb5ca80 | 240 | gpt_entry *gpt_pte = NULL; |
07f3d789 | 241 | |
242 | /* "part" argument must be at least 1 */ | |
4708a07c | 243 | if (part < 1) { |
df70b1c2 | 244 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 245 | return -1; |
246 | } | |
247 | ||
248 | /* This function validates AND fills in the GPT header and PTE */ | |
249 | if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
4715a811 | 250 | gpt_head, &gpt_pte) != 1) { |
df70b1c2 | 251 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); |
ae95fad5 SR |
252 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), |
253 | gpt_head, &gpt_pte) != 1) { | |
254 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
255 | __func__); | |
256 | return -1; | |
257 | } else { | |
258 | printf("%s: *** Using Backup GPT ***\n", | |
259 | __func__); | |
260 | } | |
07f3d789 | 261 | } |
262 | ||
fae2bf22 | 263 | if (part > le32_to_cpu(gpt_head->num_partition_entries) || |
c04d68c6 | 264 | !is_pte_valid(&gpt_pte[part - 1])) { |
6d2ee5a3 | 265 | debug("%s: *** ERROR: Invalid partition number %d ***\n", |
c04d68c6 | 266 | __func__, part); |
6d2ee5a3 | 267 | free(gpt_pte); |
c04d68c6 SW |
268 | return -1; |
269 | } | |
270 | ||
e04350d2 SR |
271 | /* The 'lbaint_t' casting may limit the maximum disk size to 2 TB */ |
272 | info->start = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].starting_lba); | |
50970839 | 273 | /* The ending LBA is inclusive, to calculate size, add 1 to it */ |
e04350d2 | 274 | info->size = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].ending_lba) + 1 |
50970839 | 275 | - info->start; |
ae1768a7 | 276 | info->blksz = dev_desc->blksz; |
07f3d789 | 277 | |
6eecc030 | 278 | sprintf((char *)info->name, "%s", |
deb5ca80 | 279 | print_efiname(&gpt_pte[part - 1])); |
192bc694 | 280 | strcpy((char *)info->type, "U-Boot"); |
b4414f4a | 281 | info->bootable = is_bootable(&gpt_pte[part - 1]); |
894bfbbf | 282 | #ifdef CONFIG_PARTITION_UUIDS |
d718ded0 PM |
283 | uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid, |
284 | UUID_STR_FORMAT_GUID); | |
894bfbbf | 285 | #endif |
7561b258 PD |
286 | #ifdef CONFIG_PARTITION_TYPE_GUID |
287 | uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b, | |
288 | info->type_guid, UUID_STR_FORMAT_GUID); | |
289 | #endif | |
07f3d789 | 290 | |
60bf9416 | 291 | debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__, |
04735e9c | 292 | info->start, info->size, info->name); |
07f3d789 | 293 | |
294 | /* Remember to free pte */ | |
deb5ca80 | 295 | free(gpt_pte); |
07f3d789 | 296 | return 0; |
297 | } | |
298 | ||
084bf4c2 | 299 | static int part_test_efi(struct blk_desc *dev_desc) |
07f3d789 | 300 | { |
ae1768a7 | 301 | ALLOC_CACHE_ALIGN_BUFFER_PAD(legacy_mbr, legacymbr, 1, dev_desc->blksz); |
07f3d789 | 302 | |
303 | /* Read legacy MBR from block 0 and validate it */ | |
2a981dc2 | 304 | if ((blk_dread(dev_desc, 0, 1, (ulong *)legacymbr) != 1) |
f75dd584 | 305 | || (is_pmbr_valid(legacymbr) != 1)) { |
07f3d789 | 306 | return -1; |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
40684ddb ŁM |
311 | /** |
312 | * set_protective_mbr(): Set the EFI protective MBR | |
313 | * @param dev_desc - block device descriptor | |
314 | * | |
315 | * @return - zero on success, otherwise error | |
316 | */ | |
4101f687 | 317 | static int set_protective_mbr(struct blk_desc *dev_desc) |
40684ddb | 318 | { |
40684ddb | 319 | /* Setup the Protective MBR */ |
61fcc7d2 HP |
320 | ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, p_mbr, 1); |
321 | memset(p_mbr, 0, sizeof(*p_mbr)); | |
322 | ||
40684ddb ŁM |
323 | if (p_mbr == NULL) { |
324 | printf("%s: calloc failed!\n", __func__); | |
325 | return -1; | |
326 | } | |
327 | /* Append signature */ | |
328 | p_mbr->signature = MSDOS_MBR_SIGNATURE; | |
329 | p_mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT; | |
330 | p_mbr->partition_record[0].start_sect = 1; | |
b349abbf | 331 | p_mbr->partition_record[0].nr_sects = (u32) dev_desc->lba - 1; |
40684ddb ŁM |
332 | |
333 | /* Write MBR sector to the MMC device */ | |
2a981dc2 | 334 | if (blk_dwrite(dev_desc, 0, 1, p_mbr) != 1) { |
40684ddb | 335 | printf("** Can't write to device %d **\n", |
bcce53d0 | 336 | dev_desc->devnum); |
40684ddb ŁM |
337 | return -1; |
338 | } | |
339 | ||
40684ddb ŁM |
340 | return 0; |
341 | } | |
342 | ||
4101f687 | 343 | int write_gpt_table(struct blk_desc *dev_desc, |
40684ddb ŁM |
344 | gpt_header *gpt_h, gpt_entry *gpt_e) |
345 | { | |
ae1768a7 EE |
346 | const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries |
347 | * sizeof(gpt_entry)), dev_desc); | |
40684ddb | 348 | u32 calc_crc32; |
40684ddb ŁM |
349 | |
350 | debug("max lba: %x\n", (u32) dev_desc->lba); | |
351 | /* Setup the Protective MBR */ | |
352 | if (set_protective_mbr(dev_desc) < 0) | |
353 | goto err; | |
354 | ||
355 | /* Generate CRC for the Primary GPT Header */ | |
356 | calc_crc32 = efi_crc32((const unsigned char *)gpt_e, | |
357 | le32_to_cpu(gpt_h->num_partition_entries) * | |
358 | le32_to_cpu(gpt_h->sizeof_partition_entry)); | |
359 | gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32); | |
360 | ||
361 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
362 | le32_to_cpu(gpt_h->header_size)); | |
363 | gpt_h->header_crc32 = cpu_to_le32(calc_crc32); | |
364 | ||
365 | /* Write the First GPT to the block right after the Legacy MBR */ | |
2a981dc2 | 366 | if (blk_dwrite(dev_desc, 1, 1, gpt_h) != 1) |
40684ddb ŁM |
367 | goto err; |
368 | ||
2a981dc2 | 369 | if (blk_dwrite(dev_desc, 2, pte_blk_cnt, gpt_e) |
ae1768a7 | 370 | != pte_blk_cnt) |
40684ddb ŁM |
371 | goto err; |
372 | ||
e1f6b0a0 | 373 | prepare_backup_gpt_header(gpt_h); |
40684ddb | 374 | |
2a981dc2 SG |
375 | if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->last_usable_lba) |
376 | + 1, pte_blk_cnt, gpt_e) != pte_blk_cnt) | |
40684ddb ŁM |
377 | goto err; |
378 | ||
2a981dc2 SG |
379 | if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->my_lba), 1, |
380 | gpt_h) != 1) | |
40684ddb ŁM |
381 | goto err; |
382 | ||
383 | debug("GPT successfully written to block device!\n"); | |
384 | return 0; | |
385 | ||
386 | err: | |
bcce53d0 | 387 | printf("** Can't write to device %d **\n", dev_desc->devnum); |
40684ddb ŁM |
388 | return -1; |
389 | } | |
390 | ||
391 | int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, | |
392 | disk_partition_t *partitions, int parts) | |
393 | { | |
e04350d2 SR |
394 | lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba); |
395 | lbaint_t start; | |
396 | lbaint_t last_usable_lba = (lbaint_t) | |
397 | le64_to_cpu(gpt_h->last_usable_lba); | |
40684ddb | 398 | int i, k; |
67cd4a63 | 399 | size_t efiname_len, dosname_len; |
40684ddb ŁM |
400 | #ifdef CONFIG_PARTITION_UUIDS |
401 | char *str_uuid; | |
a96a0e61 | 402 | unsigned char *bin_uuid; |
40684ddb | 403 | #endif |
7561b258 PD |
404 | #ifdef CONFIG_PARTITION_TYPE_GUID |
405 | char *str_type_guid; | |
406 | unsigned char *bin_type_guid; | |
407 | #endif | |
40684ddb ŁM |
408 | |
409 | for (i = 0; i < parts; i++) { | |
410 | /* partition starting lba */ | |
411 | start = partitions[i].start; | |
412 | if (start && (start < offset)) { | |
413 | printf("Partition overlap\n"); | |
414 | return -1; | |
415 | } | |
416 | if (start) { | |
417 | gpt_e[i].starting_lba = cpu_to_le64(start); | |
418 | offset = start + partitions[i].size; | |
419 | } else { | |
420 | gpt_e[i].starting_lba = cpu_to_le64(offset); | |
421 | offset += partitions[i].size; | |
422 | } | |
a5653867 | 423 | if (offset > (last_usable_lba + 1)) { |
40684ddb ŁM |
424 | printf("Partitions layout exceds disk size\n"); |
425 | return -1; | |
426 | } | |
427 | /* partition ending lba */ | |
428 | if ((i == parts - 1) && (partitions[i].size == 0)) | |
429 | /* extend the last partition to maximuim */ | |
430 | gpt_e[i].ending_lba = gpt_h->last_usable_lba; | |
431 | else | |
432 | gpt_e[i].ending_lba = cpu_to_le64(offset - 1); | |
433 | ||
7561b258 PD |
434 | #ifdef CONFIG_PARTITION_TYPE_GUID |
435 | str_type_guid = partitions[i].type_guid; | |
436 | bin_type_guid = gpt_e[i].partition_type_guid.b; | |
437 | if (strlen(str_type_guid)) { | |
438 | if (uuid_str_to_bin(str_type_guid, bin_type_guid, | |
439 | UUID_STR_FORMAT_GUID)) { | |
440 | printf("Partition no. %d: invalid type guid: %s\n", | |
441 | i, str_type_guid); | |
442 | return -1; | |
443 | } | |
444 | } else { | |
445 | /* default partition type GUID */ | |
446 | memcpy(bin_type_guid, | |
447 | &PARTITION_BASIC_DATA_GUID, 16); | |
448 | } | |
449 | #else | |
40684ddb ŁM |
450 | /* partition type GUID */ |
451 | memcpy(gpt_e[i].partition_type_guid.b, | |
452 | &PARTITION_BASIC_DATA_GUID, 16); | |
7561b258 | 453 | #endif |
40684ddb ŁM |
454 | |
455 | #ifdef CONFIG_PARTITION_UUIDS | |
456 | str_uuid = partitions[i].uuid; | |
a96a0e61 PM |
457 | bin_uuid = gpt_e[i].unique_partition_guid.b; |
458 | ||
d718ded0 | 459 | if (uuid_str_to_bin(str_uuid, bin_uuid, UUID_STR_FORMAT_STD)) { |
40684ddb ŁM |
460 | printf("Partition no. %d: invalid guid: %s\n", |
461 | i, str_uuid); | |
462 | return -1; | |
463 | } | |
464 | #endif | |
465 | ||
466 | /* partition attributes */ | |
467 | memset(&gpt_e[i].attributes, 0, | |
468 | sizeof(gpt_entry_attributes)); | |
469 | ||
cfdaf4ca PD |
470 | if (partitions[i].bootable) |
471 | gpt_e[i].attributes.fields.legacy_bios_bootable = 1; | |
472 | ||
40684ddb | 473 | /* partition name */ |
67cd4a63 | 474 | efiname_len = sizeof(gpt_e[i].partition_name) |
40684ddb | 475 | / sizeof(efi_char16_t); |
67cd4a63 MV |
476 | dosname_len = sizeof(partitions[i].name); |
477 | ||
478 | memset(gpt_e[i].partition_name, 0, | |
479 | sizeof(gpt_e[i].partition_name)); | |
480 | ||
481 | for (k = 0; k < min(dosname_len, efiname_len); k++) | |
40684ddb ŁM |
482 | gpt_e[i].partition_name[k] = |
483 | (efi_char16_t)(partitions[i].name[k]); | |
484 | ||
e04350d2 SR |
485 | debug("%s: name: %s offset[%d]: 0x" LBAF |
486 | " size[%d]: 0x" LBAF "\n", | |
40684ddb ŁM |
487 | __func__, partitions[i].name, i, |
488 | offset, i, partitions[i].size); | |
489 | } | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
4101f687 | 494 | int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, |
40684ddb ŁM |
495 | char *str_guid, int parts_count) |
496 | { | |
497 | gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE); | |
498 | gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1); | |
499 | gpt_h->header_size = cpu_to_le32(sizeof(gpt_header)); | |
500 | gpt_h->my_lba = cpu_to_le64(1); | |
501 | gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1); | |
502 | gpt_h->first_usable_lba = cpu_to_le64(34); | |
503 | gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34); | |
504 | gpt_h->partition_entry_lba = cpu_to_le64(2); | |
505 | gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS); | |
506 | gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry)); | |
507 | gpt_h->header_crc32 = 0; | |
508 | gpt_h->partition_entry_array_crc32 = 0; | |
509 | ||
d718ded0 | 510 | if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID)) |
40684ddb ŁM |
511 | return -1; |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
4101f687 | 516 | int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, |
40684ddb ŁM |
517 | disk_partition_t *partitions, int parts_count) |
518 | { | |
519 | int ret; | |
520 | ||
ae1768a7 EE |
521 | gpt_header *gpt_h = calloc(1, PAD_TO_BLOCKSIZE(sizeof(gpt_header), |
522 | dev_desc)); | |
523 | gpt_entry *gpt_e; | |
524 | ||
40684ddb ŁM |
525 | if (gpt_h == NULL) { |
526 | printf("%s: calloc failed!\n", __func__); | |
527 | return -1; | |
528 | } | |
529 | ||
ae1768a7 EE |
530 | gpt_e = calloc(1, PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS |
531 | * sizeof(gpt_entry), | |
532 | dev_desc)); | |
40684ddb ŁM |
533 | if (gpt_e == NULL) { |
534 | printf("%s: calloc failed!\n", __func__); | |
535 | free(gpt_h); | |
536 | return -1; | |
537 | } | |
538 | ||
539 | /* Generate Primary GPT header (LBA1) */ | |
540 | ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count); | |
541 | if (ret) | |
542 | goto err; | |
543 | ||
544 | /* Generate partition entries */ | |
545 | ret = gpt_fill_pte(gpt_h, gpt_e, partitions, parts_count); | |
546 | if (ret) | |
547 | goto err; | |
548 | ||
549 | /* Write GPT partition table */ | |
550 | ret = write_gpt_table(dev_desc, gpt_h, gpt_e); | |
551 | ||
552 | err: | |
553 | free(gpt_e); | |
554 | free(gpt_h); | |
555 | return ret; | |
556 | } | |
0ff7e585 | 557 | |
cef68bf9 LM |
558 | static void gpt_convert_efi_name_to_char(char *s, efi_char16_t *es, int n) |
559 | { | |
560 | char *ess = (char *)es; | |
561 | int i, j; | |
562 | ||
563 | memset(s, '\0', n); | |
564 | ||
565 | for (i = 0, j = 0; j < n; i += 2, j++) { | |
566 | s[j] = ess[i]; | |
567 | if (!ess[i]) | |
568 | return; | |
569 | } | |
570 | } | |
571 | ||
4101f687 | 572 | int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, |
cef68bf9 LM |
573 | gpt_entry **gpt_pte) |
574 | { | |
575 | /* | |
576 | * This function validates AND | |
577 | * fills in the GPT header and PTE | |
578 | */ | |
579 | if (is_gpt_valid(dev_desc, | |
580 | GPT_PRIMARY_PARTITION_TABLE_LBA, | |
581 | gpt_head, gpt_pte) != 1) { | |
582 | printf("%s: *** ERROR: Invalid GPT ***\n", | |
583 | __func__); | |
584 | return -1; | |
585 | } | |
586 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), | |
587 | gpt_head, gpt_pte) != 1) { | |
588 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
589 | __func__); | |
590 | return -1; | |
591 | } | |
592 | ||
593 | return 0; | |
594 | } | |
595 | ||
4101f687 | 596 | int gpt_verify_partitions(struct blk_desc *dev_desc, |
cef68bf9 LM |
597 | disk_partition_t *partitions, int parts, |
598 | gpt_header *gpt_head, gpt_entry **gpt_pte) | |
599 | { | |
600 | char efi_str[PARTNAME_SZ + 1]; | |
601 | u64 gpt_part_size; | |
602 | gpt_entry *gpt_e; | |
603 | int ret, i; | |
604 | ||
605 | ret = gpt_verify_headers(dev_desc, gpt_head, gpt_pte); | |
606 | if (ret) | |
607 | return ret; | |
608 | ||
609 | gpt_e = *gpt_pte; | |
610 | ||
611 | for (i = 0; i < parts; i++) { | |
612 | if (i == gpt_head->num_partition_entries) { | |
613 | error("More partitions than allowed!\n"); | |
614 | return -1; | |
615 | } | |
616 | ||
617 | /* Check if GPT and ENV partition names match */ | |
618 | gpt_convert_efi_name_to_char(efi_str, gpt_e[i].partition_name, | |
619 | PARTNAME_SZ + 1); | |
620 | ||
621 | debug("%s: part: %2d name - GPT: %16s, ENV: %16s ", | |
622 | __func__, i, efi_str, partitions[i].name); | |
623 | ||
624 | if (strncmp(efi_str, (char *)partitions[i].name, | |
625 | sizeof(partitions->name))) { | |
626 | error("Partition name: %s does not match %s!\n", | |
627 | efi_str, (char *)partitions[i].name); | |
628 | return -1; | |
629 | } | |
630 | ||
631 | /* Check if GPT and ENV sizes match */ | |
632 | gpt_part_size = le64_to_cpu(gpt_e[i].ending_lba) - | |
633 | le64_to_cpu(gpt_e[i].starting_lba) + 1; | |
634 | debug("size(LBA) - GPT: %8llu, ENV: %8llu ", | |
f8d6165d SG |
635 | (unsigned long long)gpt_part_size, |
636 | (unsigned long long)partitions[i].size); | |
cef68bf9 LM |
637 | |
638 | if (le64_to_cpu(gpt_part_size) != partitions[i].size) { | |
c2fdd345 KY |
639 | /* We do not check the extend partition size */ |
640 | if ((i == parts - 1) && (partitions[i].size == 0)) | |
641 | continue; | |
642 | ||
cef68bf9 | 643 | error("Partition %s size: %llu does not match %llu!\n", |
f8d6165d SG |
644 | efi_str, (unsigned long long)gpt_part_size, |
645 | (unsigned long long)partitions[i].size); | |
cef68bf9 LM |
646 | return -1; |
647 | } | |
648 | ||
649 | /* | |
650 | * Start address is optional - check only if provided | |
651 | * in '$partition' variable | |
652 | */ | |
653 | if (!partitions[i].start) { | |
654 | debug("\n"); | |
655 | continue; | |
656 | } | |
657 | ||
658 | /* Check if GPT and ENV start LBAs match */ | |
659 | debug("start LBA - GPT: %8llu, ENV: %8llu\n", | |
660 | le64_to_cpu(gpt_e[i].starting_lba), | |
f8d6165d | 661 | (unsigned long long)partitions[i].start); |
cef68bf9 LM |
662 | |
663 | if (le64_to_cpu(gpt_e[i].starting_lba) != partitions[i].start) { | |
664 | error("Partition %s start: %llu does not match %llu!\n", | |
665 | efi_str, le64_to_cpu(gpt_e[i].starting_lba), | |
f8d6165d | 666 | (unsigned long long)partitions[i].start); |
cef68bf9 LM |
667 | return -1; |
668 | } | |
669 | } | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
4101f687 | 674 | int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf) |
0ff7e585 SR |
675 | { |
676 | gpt_header *gpt_h; | |
677 | gpt_entry *gpt_e; | |
678 | ||
679 | /* determine start of GPT Header in the buffer */ | |
680 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * | |
681 | dev_desc->blksz); | |
682 | if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
683 | dev_desc->lba)) | |
684 | return -1; | |
685 | ||
686 | /* determine start of GPT Entries in the buffer */ | |
687 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * | |
688 | dev_desc->blksz); | |
689 | if (validate_gpt_entries(gpt_h, gpt_e)) | |
690 | return -1; | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
4101f687 | 695 | int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf) |
0ff7e585 SR |
696 | { |
697 | gpt_header *gpt_h; | |
698 | gpt_entry *gpt_e; | |
699 | int gpt_e_blk_cnt; | |
700 | lbaint_t lba; | |
701 | int cnt; | |
702 | ||
703 | if (is_valid_gpt_buf(dev_desc, buf)) | |
704 | return -1; | |
705 | ||
706 | /* determine start of GPT Header in the buffer */ | |
707 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * | |
708 | dev_desc->blksz); | |
709 | ||
710 | /* determine start of GPT Entries in the buffer */ | |
711 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * | |
712 | dev_desc->blksz); | |
713 | gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) * | |
714 | le32_to_cpu(gpt_h->sizeof_partition_entry)), | |
715 | dev_desc); | |
716 | ||
717 | /* write MBR */ | |
718 | lba = 0; /* MBR is always at 0 */ | |
719 | cnt = 1; /* MBR (1 block) */ | |
2a981dc2 | 720 | if (blk_dwrite(dev_desc, lba, cnt, buf) != cnt) { |
0ff7e585 SR |
721 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
722 | __func__, "MBR", cnt, lba); | |
723 | return 1; | |
724 | } | |
725 | ||
726 | /* write Primary GPT */ | |
727 | lba = GPT_PRIMARY_PARTITION_TABLE_LBA; | |
728 | cnt = 1; /* GPT Header (1 block) */ | |
2a981dc2 | 729 | if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) { |
0ff7e585 SR |
730 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
731 | __func__, "Primary GPT Header", cnt, lba); | |
732 | return 1; | |
733 | } | |
734 | ||
735 | lba = le64_to_cpu(gpt_h->partition_entry_lba); | |
736 | cnt = gpt_e_blk_cnt; | |
2a981dc2 | 737 | if (blk_dwrite(dev_desc, lba, cnt, gpt_e) != cnt) { |
0ff7e585 SR |
738 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
739 | __func__, "Primary GPT Entries", cnt, lba); | |
740 | return 1; | |
741 | } | |
742 | ||
743 | prepare_backup_gpt_header(gpt_h); | |
744 | ||
745 | /* write Backup GPT */ | |
746 | lba = le64_to_cpu(gpt_h->partition_entry_lba); | |
747 | cnt = gpt_e_blk_cnt; | |
2a981dc2 | 748 | if (blk_dwrite(dev_desc, lba, cnt, gpt_e) != cnt) { |
0ff7e585 SR |
749 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
750 | __func__, "Backup GPT Entries", cnt, lba); | |
751 | return 1; | |
752 | } | |
753 | ||
754 | lba = le64_to_cpu(gpt_h->my_lba); | |
755 | cnt = 1; /* GPT Header (1 block) */ | |
2a981dc2 | 756 | if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) { |
0ff7e585 SR |
757 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
758 | __func__, "Backup GPT Header", cnt, lba); | |
759 | return 1; | |
760 | } | |
761 | ||
762 | return 0; | |
763 | } | |
40684ddb ŁM |
764 | #endif |
765 | ||
07f3d789 | 766 | /* |
767 | * Private functions | |
768 | */ | |
769 | /* | |
770 | * pmbr_part_valid(): Check for EFI partition signature | |
771 | * | |
772 | * Returns: 1 if EFI GPT partition type is found. | |
773 | */ | |
774 | static int pmbr_part_valid(struct partition *part) | |
775 | { | |
776 | if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && | |
8faefadb | 777 | get_unaligned_le32(&part->start_sect) == 1UL) { |
07f3d789 | 778 | return 1; |
779 | } | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | /* | |
785 | * is_pmbr_valid(): test Protective MBR for validity | |
786 | * | |
787 | * Returns: 1 if PMBR is valid, 0 otherwise. | |
788 | * Validity depends on two things: | |
789 | * 1) MSDOS signature is in the last two bytes of the MBR | |
790 | * 2) One partition of type 0xEE is found, checked by pmbr_part_valid() | |
791 | */ | |
792 | static int is_pmbr_valid(legacy_mbr * mbr) | |
793 | { | |
794 | int i = 0; | |
795 | ||
fae2bf22 | 796 | if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) |
07f3d789 | 797 | return 0; |
07f3d789 | 798 | |
799 | for (i = 0; i < 4; i++) { | |
800 | if (pmbr_part_valid(&mbr->partition_record[i])) { | |
801 | return 1; | |
802 | } | |
803 | } | |
804 | return 0; | |
805 | } | |
806 | ||
807 | /** | |
808 | * is_gpt_valid() - tests one GPT header and PTEs for validity | |
809 | * | |
810 | * lba is the logical block address of the GPT header to test | |
811 | * gpt is a GPT header ptr, filled on return. | |
812 | * ptes is a PTEs ptr, filled on return. | |
813 | * | |
814 | * Description: returns 1 if valid, 0 on error. | |
815 | * If valid, returns pointers to PTEs. | |
816 | */ | |
4101f687 | 817 | static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, |
e04350d2 | 818 | gpt_header *pgpt_head, gpt_entry **pgpt_pte) |
07f3d789 | 819 | { |
07f3d789 | 820 | if (!dev_desc || !pgpt_head) { |
df70b1c2 | 821 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 822 | return 0; |
823 | } | |
824 | ||
825 | /* Read GPT Header from device */ | |
2a981dc2 | 826 | if (blk_dread(dev_desc, (lbaint_t)lba, 1, pgpt_head) != 1) { |
07f3d789 | 827 | printf("*** ERROR: Can't read GPT header ***\n"); |
828 | return 0; | |
829 | } | |
830 | ||
e1f6b0a0 | 831 | if (validate_gpt_header(pgpt_head, (lbaint_t)lba, dev_desc->lba)) |
07f3d789 | 832 | return 0; |
07f3d789 | 833 | |
834 | /* Read and allocate Partition Table Entries */ | |
835 | *pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head); | |
836 | if (*pgpt_pte == NULL) { | |
837 | printf("GPT: Failed to allocate memory for PTE\n"); | |
838 | return 0; | |
839 | } | |
840 | ||
e1f6b0a0 | 841 | if (validate_gpt_entries(pgpt_head, *pgpt_pte)) { |
deb5ca80 | 842 | free(*pgpt_pte); |
07f3d789 | 843 | return 0; |
844 | } | |
845 | ||
846 | /* We're done, all's well */ | |
847 | return 1; | |
848 | } | |
849 | ||
850 | /** | |
851 | * alloc_read_gpt_entries(): reads partition entries from disk | |
852 | * @dev_desc | |
853 | * @gpt - GPT header | |
854 | * | |
855 | * Description: Returns ptes on success, NULL on error. | |
856 | * Allocates space for PTEs based on information found in @gpt. | |
857 | * Notes: remember to free pte when you're done! | |
858 | */ | |
4101f687 SG |
859 | static gpt_entry *alloc_read_gpt_entries(struct blk_desc *dev_desc, |
860 | gpt_header *pgpt_head) | |
07f3d789 | 861 | { |
ae1768a7 | 862 | size_t count = 0, blk_cnt; |
7c4213f6 | 863 | lbaint_t blk; |
07f3d789 | 864 | gpt_entry *pte = NULL; |
865 | ||
866 | if (!dev_desc || !pgpt_head) { | |
df70b1c2 | 867 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 868 | return NULL; |
869 | } | |
870 | ||
fae2bf22 CHP |
871 | count = le32_to_cpu(pgpt_head->num_partition_entries) * |
872 | le32_to_cpu(pgpt_head->sizeof_partition_entry); | |
07f3d789 | 873 | |
5afb8d15 | 874 | debug("%s: count = %u * %u = %lu\n", __func__, |
fae2bf22 | 875 | (u32) le32_to_cpu(pgpt_head->num_partition_entries), |
5afb8d15 SG |
876 | (u32) le32_to_cpu(pgpt_head->sizeof_partition_entry), |
877 | (ulong)count); | |
07f3d789 | 878 | |
879 | /* Allocate memory for PTE, remember to FREE */ | |
880 | if (count != 0) { | |
ae1768a7 EE |
881 | pte = memalign(ARCH_DMA_MINALIGN, |
882 | PAD_TO_BLOCKSIZE(count, dev_desc)); | |
07f3d789 | 883 | } |
884 | ||
885 | if (count == 0 || pte == NULL) { | |
5afb8d15 SG |
886 | printf("%s: ERROR: Can't allocate %#lX bytes for GPT Entries\n", |
887 | __func__, (ulong)count); | |
07f3d789 | 888 | return NULL; |
889 | } | |
890 | ||
891 | /* Read GPT Entries from device */ | |
7c4213f6 | 892 | blk = le64_to_cpu(pgpt_head->partition_entry_lba); |
ae1768a7 | 893 | blk_cnt = BLOCK_CNT(count, dev_desc); |
2a981dc2 | 894 | if (blk_dread(dev_desc, blk, (lbaint_t)blk_cnt, pte) != blk_cnt) { |
07f3d789 | 895 | printf("*** ERROR: Can't read GPT Entries ***\n"); |
896 | free(pte); | |
897 | return NULL; | |
898 | } | |
899 | return pte; | |
900 | } | |
901 | ||
902 | /** | |
903 | * is_pte_valid(): validates a single Partition Table Entry | |
904 | * @gpt_entry - Pointer to a single Partition Table Entry | |
905 | * | |
906 | * Description: returns 1 if valid, 0 on error. | |
907 | */ | |
908 | static int is_pte_valid(gpt_entry * pte) | |
909 | { | |
910 | efi_guid_t unused_guid; | |
911 | ||
912 | if (!pte) { | |
df70b1c2 | 913 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 914 | return 0; |
915 | } | |
916 | ||
917 | /* Only one validation for now: | |
918 | * The GUID Partition Type != Unused Entry (ALL-ZERO) | |
919 | */ | |
920 | memset(unused_guid.b, 0, sizeof(unused_guid.b)); | |
921 | ||
922 | if (memcmp(pte->partition_type_guid.b, unused_guid.b, | |
923 | sizeof(unused_guid.b)) == 0) { | |
924 | ||
df70b1c2 | 925 | debug("%s: Found an unused PTE GUID at 0x%08X\n", __func__, |
9936be31 | 926 | (unsigned int)(uintptr_t)pte); |
07f3d789 | 927 | |
928 | return 0; | |
929 | } else { | |
930 | return 1; | |
931 | } | |
932 | } | |
96e5b03c SG |
933 | |
934 | /* | |
935 | * Add an 'a_' prefix so it comes before 'dos' in the linker list. We need to | |
936 | * check EFI first, since a DOS partition is often used as a 'protective MBR' | |
937 | * with EFI. | |
938 | */ | |
939 | U_BOOT_PART_TYPE(a_efi) = { | |
940 | .name = "EFI", | |
941 | .part_type = PART_TYPE_EFI, | |
87b8530f | 942 | .max_entries = GPT_ENTRY_NUMBERS, |
3e8bd469 | 943 | .get_info = part_get_info_ptr(part_get_info_efi), |
084bf4c2 SG |
944 | .print = part_print_ptr(part_print_efi), |
945 | .test = part_test_efi, | |
96e5b03c | 946 | }; |
07f3d789 | 947 | #endif |