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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); | |
e04350d2 SR |
44 | static int is_gpt_valid(block_dev_desc_t *dev_desc, u64 lba, |
45 | gpt_header *pgpt_head, gpt_entry **pgpt_pte); | |
07f3d789 | 46 | static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * 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 | ||
179 | void print_part_efi(block_dev_desc_t * dev_desc) | |
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 | |
187 | if (!dev_desc) { | |
df70b1c2 | 188 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 189 | return; |
190 | } | |
191 | /* This function validates AND fills in the GPT header and PTE */ | |
192 | if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
4715a811 | 193 | gpt_head, &gpt_pte) != 1) { |
df70b1c2 | 194 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); |
ae95fad5 SR |
195 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), |
196 | gpt_head, &gpt_pte) != 1) { | |
197 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
198 | __func__); | |
199 | return; | |
200 | } else { | |
201 | printf("%s: *** Using Backup GPT ***\n", | |
202 | __func__); | |
203 | } | |
07f3d789 | 204 | } |
205 | ||
deb5ca80 | 206 | debug("%s: gpt-entry at %p\n", __func__, gpt_pte); |
07f3d789 | 207 | |
788a8c1f | 208 | printf("Part\tStart LBA\tEnd LBA\t\tName\n"); |
13bf2f55 | 209 | printf("\tAttributes\n"); |
d718ded0 PM |
210 | printf("\tType GUID\n"); |
211 | printf("\tPartition GUID\n"); | |
f07cd2c4 | 212 | |
fae2bf22 | 213 | for (i = 0; i < le32_to_cpu(gpt_head->num_partition_entries); i++) { |
38a3021e SW |
214 | /* Stop at the first non valid PTE */ |
215 | if (!is_pte_valid(&gpt_pte[i])) | |
216 | break; | |
217 | ||
788a8c1f | 218 | printf("%3d\t0x%08llx\t0x%08llx\t\"%s\"\n", (i + 1), |
fae2bf22 CHP |
219 | le64_to_cpu(gpt_pte[i].starting_lba), |
220 | le64_to_cpu(gpt_pte[i].ending_lba), | |
788a8c1f | 221 | print_efiname(&gpt_pte[i])); |
13bf2f55 | 222 | printf("\tattrs:\t0x%016llx\n", gpt_pte[i].attributes.raw); |
a96a0e61 | 223 | uuid_bin = (unsigned char *)gpt_pte[i].partition_type_guid.b; |
d718ded0 | 224 | uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); |
f07cd2c4 | 225 | printf("\ttype:\t%s\n", uuid); |
bcb41dca PD |
226 | #ifdef CONFIG_PARTITION_TYPE_GUID |
227 | if (!uuid_guid_get_str(uuid_bin, uuid)) | |
228 | printf("\ttype:\t%s\n", uuid); | |
229 | #endif | |
a96a0e61 | 230 | uuid_bin = (unsigned char *)gpt_pte[i].unique_partition_guid.b; |
d718ded0 PM |
231 | uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); |
232 | printf("\tguid:\t%s\n", uuid); | |
07f3d789 | 233 | } |
234 | ||
235 | /* Remember to free pte */ | |
deb5ca80 | 236 | free(gpt_pte); |
07f3d789 | 237 | return; |
238 | } | |
239 | ||
240 | int get_partition_info_efi(block_dev_desc_t * dev_desc, int part, | |
241 | disk_partition_t * info) | |
242 | { | |
ae1768a7 | 243 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); |
deb5ca80 | 244 | gpt_entry *gpt_pte = NULL; |
07f3d789 | 245 | |
246 | /* "part" argument must be at least 1 */ | |
247 | if (!dev_desc || !info || part < 1) { | |
df70b1c2 | 248 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 249 | return -1; |
250 | } | |
251 | ||
252 | /* This function validates AND fills in the GPT header and PTE */ | |
253 | if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
4715a811 | 254 | gpt_head, &gpt_pte) != 1) { |
df70b1c2 | 255 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); |
ae95fad5 SR |
256 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), |
257 | gpt_head, &gpt_pte) != 1) { | |
258 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
259 | __func__); | |
260 | return -1; | |
261 | } else { | |
262 | printf("%s: *** Using Backup GPT ***\n", | |
263 | __func__); | |
264 | } | |
07f3d789 | 265 | } |
266 | ||
fae2bf22 | 267 | if (part > le32_to_cpu(gpt_head->num_partition_entries) || |
c04d68c6 | 268 | !is_pte_valid(&gpt_pte[part - 1])) { |
6d2ee5a3 | 269 | debug("%s: *** ERROR: Invalid partition number %d ***\n", |
c04d68c6 | 270 | __func__, part); |
6d2ee5a3 | 271 | free(gpt_pte); |
c04d68c6 SW |
272 | return -1; |
273 | } | |
274 | ||
e04350d2 SR |
275 | /* The 'lbaint_t' casting may limit the maximum disk size to 2 TB */ |
276 | info->start = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].starting_lba); | |
50970839 | 277 | /* The ending LBA is inclusive, to calculate size, add 1 to it */ |
e04350d2 | 278 | info->size = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].ending_lba) + 1 |
50970839 | 279 | - info->start; |
ae1768a7 | 280 | info->blksz = dev_desc->blksz; |
07f3d789 | 281 | |
6eecc030 | 282 | sprintf((char *)info->name, "%s", |
deb5ca80 | 283 | print_efiname(&gpt_pte[part - 1])); |
07f3d789 | 284 | sprintf((char *)info->type, "U-Boot"); |
b4414f4a | 285 | info->bootable = is_bootable(&gpt_pte[part - 1]); |
894bfbbf | 286 | #ifdef CONFIG_PARTITION_UUIDS |
d718ded0 PM |
287 | uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid, |
288 | UUID_STR_FORMAT_GUID); | |
894bfbbf | 289 | #endif |
7561b258 PD |
290 | #ifdef CONFIG_PARTITION_TYPE_GUID |
291 | uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b, | |
292 | info->type_guid, UUID_STR_FORMAT_GUID); | |
293 | #endif | |
07f3d789 | 294 | |
60bf9416 | 295 | debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__, |
04735e9c | 296 | info->start, info->size, info->name); |
07f3d789 | 297 | |
298 | /* Remember to free pte */ | |
deb5ca80 | 299 | free(gpt_pte); |
07f3d789 | 300 | return 0; |
301 | } | |
302 | ||
60bf9416 SR |
303 | int get_partition_info_efi_by_name(block_dev_desc_t *dev_desc, |
304 | const char *name, disk_partition_t *info) | |
305 | { | |
306 | int ret; | |
307 | int i; | |
308 | for (i = 1; i < GPT_ENTRY_NUMBERS; i++) { | |
309 | ret = get_partition_info_efi(dev_desc, i, info); | |
310 | if (ret != 0) { | |
311 | /* no more entries in table */ | |
312 | return -1; | |
313 | } | |
314 | if (strcmp(name, (const char *)info->name) == 0) { | |
315 | /* matched */ | |
316 | return 0; | |
317 | } | |
318 | } | |
319 | return -2; | |
320 | } | |
321 | ||
07f3d789 | 322 | int test_part_efi(block_dev_desc_t * dev_desc) |
323 | { | |
ae1768a7 | 324 | ALLOC_CACHE_ALIGN_BUFFER_PAD(legacy_mbr, legacymbr, 1, dev_desc->blksz); |
07f3d789 | 325 | |
326 | /* Read legacy MBR from block 0 and validate it */ | |
f75dd584 A |
327 | if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)legacymbr) != 1) |
328 | || (is_pmbr_valid(legacymbr) != 1)) { | |
07f3d789 | 329 | return -1; |
330 | } | |
331 | return 0; | |
332 | } | |
333 | ||
40684ddb ŁM |
334 | /** |
335 | * set_protective_mbr(): Set the EFI protective MBR | |
336 | * @param dev_desc - block device descriptor | |
337 | * | |
338 | * @return - zero on success, otherwise error | |
339 | */ | |
340 | static int set_protective_mbr(block_dev_desc_t *dev_desc) | |
341 | { | |
40684ddb | 342 | /* Setup the Protective MBR */ |
61fcc7d2 HP |
343 | ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, p_mbr, 1); |
344 | memset(p_mbr, 0, sizeof(*p_mbr)); | |
345 | ||
40684ddb ŁM |
346 | if (p_mbr == NULL) { |
347 | printf("%s: calloc failed!\n", __func__); | |
348 | return -1; | |
349 | } | |
350 | /* Append signature */ | |
351 | p_mbr->signature = MSDOS_MBR_SIGNATURE; | |
352 | p_mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT; | |
353 | p_mbr->partition_record[0].start_sect = 1; | |
b349abbf | 354 | p_mbr->partition_record[0].nr_sects = (u32) dev_desc->lba - 1; |
40684ddb ŁM |
355 | |
356 | /* Write MBR sector to the MMC device */ | |
357 | if (dev_desc->block_write(dev_desc->dev, 0, 1, p_mbr) != 1) { | |
358 | printf("** Can't write to device %d **\n", | |
359 | dev_desc->dev); | |
40684ddb ŁM |
360 | return -1; |
361 | } | |
362 | ||
40684ddb ŁM |
363 | return 0; |
364 | } | |
365 | ||
40684ddb ŁM |
366 | int write_gpt_table(block_dev_desc_t *dev_desc, |
367 | gpt_header *gpt_h, gpt_entry *gpt_e) | |
368 | { | |
ae1768a7 EE |
369 | const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries |
370 | * sizeof(gpt_entry)), dev_desc); | |
40684ddb | 371 | u32 calc_crc32; |
40684ddb ŁM |
372 | |
373 | debug("max lba: %x\n", (u32) dev_desc->lba); | |
374 | /* Setup the Protective MBR */ | |
375 | if (set_protective_mbr(dev_desc) < 0) | |
376 | goto err; | |
377 | ||
378 | /* Generate CRC for the Primary GPT Header */ | |
379 | calc_crc32 = efi_crc32((const unsigned char *)gpt_e, | |
380 | le32_to_cpu(gpt_h->num_partition_entries) * | |
381 | le32_to_cpu(gpt_h->sizeof_partition_entry)); | |
382 | gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32); | |
383 | ||
384 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
385 | le32_to_cpu(gpt_h->header_size)); | |
386 | gpt_h->header_crc32 = cpu_to_le32(calc_crc32); | |
387 | ||
388 | /* Write the First GPT to the block right after the Legacy MBR */ | |
389 | if (dev_desc->block_write(dev_desc->dev, 1, 1, gpt_h) != 1) | |
390 | goto err; | |
391 | ||
ae1768a7 EE |
392 | if (dev_desc->block_write(dev_desc->dev, 2, pte_blk_cnt, gpt_e) |
393 | != pte_blk_cnt) | |
40684ddb ŁM |
394 | goto err; |
395 | ||
e1f6b0a0 | 396 | prepare_backup_gpt_header(gpt_h); |
40684ddb ŁM |
397 | |
398 | if (dev_desc->block_write(dev_desc->dev, | |
e04350d2 SR |
399 | (lbaint_t)le64_to_cpu(gpt_h->last_usable_lba) |
400 | + 1, | |
ae1768a7 | 401 | pte_blk_cnt, gpt_e) != pte_blk_cnt) |
40684ddb ŁM |
402 | goto err; |
403 | ||
404 | if (dev_desc->block_write(dev_desc->dev, | |
e04350d2 SR |
405 | (lbaint_t)le64_to_cpu(gpt_h->my_lba), 1, |
406 | gpt_h) != 1) | |
40684ddb ŁM |
407 | goto err; |
408 | ||
409 | debug("GPT successfully written to block device!\n"); | |
410 | return 0; | |
411 | ||
412 | err: | |
413 | printf("** Can't write to device %d **\n", dev_desc->dev); | |
414 | return -1; | |
415 | } | |
416 | ||
417 | int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, | |
418 | disk_partition_t *partitions, int parts) | |
419 | { | |
e04350d2 SR |
420 | lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba); |
421 | lbaint_t start; | |
422 | lbaint_t last_usable_lba = (lbaint_t) | |
423 | le64_to_cpu(gpt_h->last_usable_lba); | |
40684ddb | 424 | int i, k; |
67cd4a63 | 425 | size_t efiname_len, dosname_len; |
40684ddb ŁM |
426 | #ifdef CONFIG_PARTITION_UUIDS |
427 | char *str_uuid; | |
a96a0e61 | 428 | unsigned char *bin_uuid; |
40684ddb | 429 | #endif |
7561b258 PD |
430 | #ifdef CONFIG_PARTITION_TYPE_GUID |
431 | char *str_type_guid; | |
432 | unsigned char *bin_type_guid; | |
433 | #endif | |
40684ddb ŁM |
434 | |
435 | for (i = 0; i < parts; i++) { | |
436 | /* partition starting lba */ | |
437 | start = partitions[i].start; | |
438 | if (start && (start < offset)) { | |
439 | printf("Partition overlap\n"); | |
440 | return -1; | |
441 | } | |
442 | if (start) { | |
443 | gpt_e[i].starting_lba = cpu_to_le64(start); | |
444 | offset = start + partitions[i].size; | |
445 | } else { | |
446 | gpt_e[i].starting_lba = cpu_to_le64(offset); | |
447 | offset += partitions[i].size; | |
448 | } | |
dedf37bb | 449 | if (offset >= last_usable_lba) { |
40684ddb ŁM |
450 | printf("Partitions layout exceds disk size\n"); |
451 | return -1; | |
452 | } | |
453 | /* partition ending lba */ | |
454 | if ((i == parts - 1) && (partitions[i].size == 0)) | |
455 | /* extend the last partition to maximuim */ | |
456 | gpt_e[i].ending_lba = gpt_h->last_usable_lba; | |
457 | else | |
458 | gpt_e[i].ending_lba = cpu_to_le64(offset - 1); | |
459 | ||
7561b258 PD |
460 | #ifdef CONFIG_PARTITION_TYPE_GUID |
461 | str_type_guid = partitions[i].type_guid; | |
462 | bin_type_guid = gpt_e[i].partition_type_guid.b; | |
463 | if (strlen(str_type_guid)) { | |
464 | if (uuid_str_to_bin(str_type_guid, bin_type_guid, | |
465 | UUID_STR_FORMAT_GUID)) { | |
466 | printf("Partition no. %d: invalid type guid: %s\n", | |
467 | i, str_type_guid); | |
468 | return -1; | |
469 | } | |
470 | } else { | |
471 | /* default partition type GUID */ | |
472 | memcpy(bin_type_guid, | |
473 | &PARTITION_BASIC_DATA_GUID, 16); | |
474 | } | |
475 | #else | |
40684ddb ŁM |
476 | /* partition type GUID */ |
477 | memcpy(gpt_e[i].partition_type_guid.b, | |
478 | &PARTITION_BASIC_DATA_GUID, 16); | |
7561b258 | 479 | #endif |
40684ddb ŁM |
480 | |
481 | #ifdef CONFIG_PARTITION_UUIDS | |
482 | str_uuid = partitions[i].uuid; | |
a96a0e61 PM |
483 | bin_uuid = gpt_e[i].unique_partition_guid.b; |
484 | ||
d718ded0 | 485 | if (uuid_str_to_bin(str_uuid, bin_uuid, UUID_STR_FORMAT_STD)) { |
40684ddb ŁM |
486 | printf("Partition no. %d: invalid guid: %s\n", |
487 | i, str_uuid); | |
488 | return -1; | |
489 | } | |
490 | #endif | |
491 | ||
492 | /* partition attributes */ | |
493 | memset(&gpt_e[i].attributes, 0, | |
494 | sizeof(gpt_entry_attributes)); | |
495 | ||
496 | /* partition name */ | |
67cd4a63 | 497 | efiname_len = sizeof(gpt_e[i].partition_name) |
40684ddb | 498 | / sizeof(efi_char16_t); |
67cd4a63 MV |
499 | dosname_len = sizeof(partitions[i].name); |
500 | ||
501 | memset(gpt_e[i].partition_name, 0, | |
502 | sizeof(gpt_e[i].partition_name)); | |
503 | ||
504 | for (k = 0; k < min(dosname_len, efiname_len); k++) | |
40684ddb ŁM |
505 | gpt_e[i].partition_name[k] = |
506 | (efi_char16_t)(partitions[i].name[k]); | |
507 | ||
e04350d2 SR |
508 | debug("%s: name: %s offset[%d]: 0x" LBAF |
509 | " size[%d]: 0x" LBAF "\n", | |
40684ddb ŁM |
510 | __func__, partitions[i].name, i, |
511 | offset, i, partitions[i].size); | |
512 | } | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
517 | int gpt_fill_header(block_dev_desc_t *dev_desc, gpt_header *gpt_h, | |
518 | char *str_guid, int parts_count) | |
519 | { | |
520 | gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE); | |
521 | gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1); | |
522 | gpt_h->header_size = cpu_to_le32(sizeof(gpt_header)); | |
523 | gpt_h->my_lba = cpu_to_le64(1); | |
524 | gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1); | |
525 | gpt_h->first_usable_lba = cpu_to_le64(34); | |
526 | gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34); | |
527 | gpt_h->partition_entry_lba = cpu_to_le64(2); | |
528 | gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS); | |
529 | gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry)); | |
530 | gpt_h->header_crc32 = 0; | |
531 | gpt_h->partition_entry_array_crc32 = 0; | |
532 | ||
d718ded0 | 533 | if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID)) |
40684ddb ŁM |
534 | return -1; |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
539 | int gpt_restore(block_dev_desc_t *dev_desc, char *str_disk_guid, | |
540 | disk_partition_t *partitions, int parts_count) | |
541 | { | |
542 | int ret; | |
543 | ||
ae1768a7 EE |
544 | gpt_header *gpt_h = calloc(1, PAD_TO_BLOCKSIZE(sizeof(gpt_header), |
545 | dev_desc)); | |
546 | gpt_entry *gpt_e; | |
547 | ||
40684ddb ŁM |
548 | if (gpt_h == NULL) { |
549 | printf("%s: calloc failed!\n", __func__); | |
550 | return -1; | |
551 | } | |
552 | ||
ae1768a7 EE |
553 | gpt_e = calloc(1, PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS |
554 | * sizeof(gpt_entry), | |
555 | dev_desc)); | |
40684ddb ŁM |
556 | if (gpt_e == NULL) { |
557 | printf("%s: calloc failed!\n", __func__); | |
558 | free(gpt_h); | |
559 | return -1; | |
560 | } | |
561 | ||
562 | /* Generate Primary GPT header (LBA1) */ | |
563 | ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count); | |
564 | if (ret) | |
565 | goto err; | |
566 | ||
567 | /* Generate partition entries */ | |
568 | ret = gpt_fill_pte(gpt_h, gpt_e, partitions, parts_count); | |
569 | if (ret) | |
570 | goto err; | |
571 | ||
572 | /* Write GPT partition table */ | |
573 | ret = write_gpt_table(dev_desc, gpt_h, gpt_e); | |
574 | ||
575 | err: | |
576 | free(gpt_e); | |
577 | free(gpt_h); | |
578 | return ret; | |
579 | } | |
0ff7e585 SR |
580 | |
581 | int is_valid_gpt_buf(block_dev_desc_t *dev_desc, void *buf) | |
582 | { | |
583 | gpt_header *gpt_h; | |
584 | gpt_entry *gpt_e; | |
585 | ||
586 | /* determine start of GPT Header in the buffer */ | |
587 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * | |
588 | dev_desc->blksz); | |
589 | if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
590 | dev_desc->lba)) | |
591 | return -1; | |
592 | ||
593 | /* determine start of GPT Entries in the buffer */ | |
594 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * | |
595 | dev_desc->blksz); | |
596 | if (validate_gpt_entries(gpt_h, gpt_e)) | |
597 | return -1; | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | int write_mbr_and_gpt_partitions(block_dev_desc_t *dev_desc, void *buf) | |
603 | { | |
604 | gpt_header *gpt_h; | |
605 | gpt_entry *gpt_e; | |
606 | int gpt_e_blk_cnt; | |
607 | lbaint_t lba; | |
608 | int cnt; | |
609 | ||
610 | if (is_valid_gpt_buf(dev_desc, buf)) | |
611 | return -1; | |
612 | ||
613 | /* determine start of GPT Header in the buffer */ | |
614 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * | |
615 | dev_desc->blksz); | |
616 | ||
617 | /* determine start of GPT Entries in the buffer */ | |
618 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * | |
619 | dev_desc->blksz); | |
620 | gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) * | |
621 | le32_to_cpu(gpt_h->sizeof_partition_entry)), | |
622 | dev_desc); | |
623 | ||
624 | /* write MBR */ | |
625 | lba = 0; /* MBR is always at 0 */ | |
626 | cnt = 1; /* MBR (1 block) */ | |
627 | if (dev_desc->block_write(dev_desc->dev, lba, cnt, buf) != cnt) { | |
628 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", | |
629 | __func__, "MBR", cnt, lba); | |
630 | return 1; | |
631 | } | |
632 | ||
633 | /* write Primary GPT */ | |
634 | lba = GPT_PRIMARY_PARTITION_TABLE_LBA; | |
635 | cnt = 1; /* GPT Header (1 block) */ | |
636 | if (dev_desc->block_write(dev_desc->dev, lba, cnt, gpt_h) != cnt) { | |
637 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", | |
638 | __func__, "Primary GPT Header", cnt, lba); | |
639 | return 1; | |
640 | } | |
641 | ||
642 | lba = le64_to_cpu(gpt_h->partition_entry_lba); | |
643 | cnt = gpt_e_blk_cnt; | |
644 | if (dev_desc->block_write(dev_desc->dev, lba, cnt, gpt_e) != cnt) { | |
645 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", | |
646 | __func__, "Primary GPT Entries", cnt, lba); | |
647 | return 1; | |
648 | } | |
649 | ||
650 | prepare_backup_gpt_header(gpt_h); | |
651 | ||
652 | /* write Backup GPT */ | |
653 | lba = le64_to_cpu(gpt_h->partition_entry_lba); | |
654 | cnt = gpt_e_blk_cnt; | |
655 | if (dev_desc->block_write(dev_desc->dev, lba, cnt, gpt_e) != cnt) { | |
656 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", | |
657 | __func__, "Backup GPT Entries", cnt, lba); | |
658 | return 1; | |
659 | } | |
660 | ||
661 | lba = le64_to_cpu(gpt_h->my_lba); | |
662 | cnt = 1; /* GPT Header (1 block) */ | |
663 | if (dev_desc->block_write(dev_desc->dev, lba, cnt, gpt_h) != cnt) { | |
664 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", | |
665 | __func__, "Backup GPT Header", cnt, lba); | |
666 | return 1; | |
667 | } | |
668 | ||
669 | return 0; | |
670 | } | |
40684ddb ŁM |
671 | #endif |
672 | ||
07f3d789 | 673 | /* |
674 | * Private functions | |
675 | */ | |
676 | /* | |
677 | * pmbr_part_valid(): Check for EFI partition signature | |
678 | * | |
679 | * Returns: 1 if EFI GPT partition type is found. | |
680 | */ | |
681 | static int pmbr_part_valid(struct partition *part) | |
682 | { | |
683 | if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && | |
8faefadb | 684 | get_unaligned_le32(&part->start_sect) == 1UL) { |
07f3d789 | 685 | return 1; |
686 | } | |
687 | ||
688 | return 0; | |
689 | } | |
690 | ||
691 | /* | |
692 | * is_pmbr_valid(): test Protective MBR for validity | |
693 | * | |
694 | * Returns: 1 if PMBR is valid, 0 otherwise. | |
695 | * Validity depends on two things: | |
696 | * 1) MSDOS signature is in the last two bytes of the MBR | |
697 | * 2) One partition of type 0xEE is found, checked by pmbr_part_valid() | |
698 | */ | |
699 | static int is_pmbr_valid(legacy_mbr * mbr) | |
700 | { | |
701 | int i = 0; | |
702 | ||
fae2bf22 | 703 | if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) |
07f3d789 | 704 | return 0; |
07f3d789 | 705 | |
706 | for (i = 0; i < 4; i++) { | |
707 | if (pmbr_part_valid(&mbr->partition_record[i])) { | |
708 | return 1; | |
709 | } | |
710 | } | |
711 | return 0; | |
712 | } | |
713 | ||
714 | /** | |
715 | * is_gpt_valid() - tests one GPT header and PTEs for validity | |
716 | * | |
717 | * lba is the logical block address of the GPT header to test | |
718 | * gpt is a GPT header ptr, filled on return. | |
719 | * ptes is a PTEs ptr, filled on return. | |
720 | * | |
721 | * Description: returns 1 if valid, 0 on error. | |
722 | * If valid, returns pointers to PTEs. | |
723 | */ | |
e04350d2 SR |
724 | static int is_gpt_valid(block_dev_desc_t *dev_desc, u64 lba, |
725 | gpt_header *pgpt_head, gpt_entry **pgpt_pte) | |
07f3d789 | 726 | { |
07f3d789 | 727 | if (!dev_desc || !pgpt_head) { |
df70b1c2 | 728 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 729 | return 0; |
730 | } | |
731 | ||
732 | /* Read GPT Header from device */ | |
e04350d2 SR |
733 | if (dev_desc->block_read(dev_desc->dev, (lbaint_t)lba, 1, pgpt_head) |
734 | != 1) { | |
07f3d789 | 735 | printf("*** ERROR: Can't read GPT header ***\n"); |
736 | return 0; | |
737 | } | |
738 | ||
e1f6b0a0 | 739 | if (validate_gpt_header(pgpt_head, (lbaint_t)lba, dev_desc->lba)) |
07f3d789 | 740 | return 0; |
07f3d789 | 741 | |
742 | /* Read and allocate Partition Table Entries */ | |
743 | *pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head); | |
744 | if (*pgpt_pte == NULL) { | |
745 | printf("GPT: Failed to allocate memory for PTE\n"); | |
746 | return 0; | |
747 | } | |
748 | ||
e1f6b0a0 | 749 | if (validate_gpt_entries(pgpt_head, *pgpt_pte)) { |
deb5ca80 | 750 | free(*pgpt_pte); |
07f3d789 | 751 | return 0; |
752 | } | |
753 | ||
754 | /* We're done, all's well */ | |
755 | return 1; | |
756 | } | |
757 | ||
758 | /** | |
759 | * alloc_read_gpt_entries(): reads partition entries from disk | |
760 | * @dev_desc | |
761 | * @gpt - GPT header | |
762 | * | |
763 | * Description: Returns ptes on success, NULL on error. | |
764 | * Allocates space for PTEs based on information found in @gpt. | |
765 | * Notes: remember to free pte when you're done! | |
766 | */ | |
767 | static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc, | |
768 | gpt_header * pgpt_head) | |
769 | { | |
ae1768a7 | 770 | size_t count = 0, blk_cnt; |
07f3d789 | 771 | gpt_entry *pte = NULL; |
772 | ||
773 | if (!dev_desc || !pgpt_head) { | |
df70b1c2 | 774 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 775 | return NULL; |
776 | } | |
777 | ||
fae2bf22 CHP |
778 | count = le32_to_cpu(pgpt_head->num_partition_entries) * |
779 | le32_to_cpu(pgpt_head->sizeof_partition_entry); | |
07f3d789 | 780 | |
fae2bf22 CHP |
781 | debug("%s: count = %u * %u = %zu\n", __func__, |
782 | (u32) le32_to_cpu(pgpt_head->num_partition_entries), | |
783 | (u32) le32_to_cpu(pgpt_head->sizeof_partition_entry), count); | |
07f3d789 | 784 | |
785 | /* Allocate memory for PTE, remember to FREE */ | |
786 | if (count != 0) { | |
ae1768a7 EE |
787 | pte = memalign(ARCH_DMA_MINALIGN, |
788 | PAD_TO_BLOCKSIZE(count, dev_desc)); | |
07f3d789 | 789 | } |
790 | ||
791 | if (count == 0 || pte == NULL) { | |
9936be31 TH |
792 | printf("%s: ERROR: Can't allocate 0x%zX " |
793 | "bytes for GPT Entries\n", | |
df70b1c2 | 794 | __func__, count); |
07f3d789 | 795 | return NULL; |
796 | } | |
797 | ||
798 | /* Read GPT Entries from device */ | |
ae1768a7 | 799 | blk_cnt = BLOCK_CNT(count, dev_desc); |
07f3d789 | 800 | if (dev_desc->block_read (dev_desc->dev, |
e04350d2 | 801 | (lbaint_t)le64_to_cpu(pgpt_head->partition_entry_lba), |
ae1768a7 EE |
802 | (lbaint_t) (blk_cnt), pte) |
803 | != blk_cnt) { | |
07f3d789 | 804 | |
805 | printf("*** ERROR: Can't read GPT Entries ***\n"); | |
806 | free(pte); | |
807 | return NULL; | |
808 | } | |
809 | return pte; | |
810 | } | |
811 | ||
812 | /** | |
813 | * is_pte_valid(): validates a single Partition Table Entry | |
814 | * @gpt_entry - Pointer to a single Partition Table Entry | |
815 | * | |
816 | * Description: returns 1 if valid, 0 on error. | |
817 | */ | |
818 | static int is_pte_valid(gpt_entry * pte) | |
819 | { | |
820 | efi_guid_t unused_guid; | |
821 | ||
822 | if (!pte) { | |
df70b1c2 | 823 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 824 | return 0; |
825 | } | |
826 | ||
827 | /* Only one validation for now: | |
828 | * The GUID Partition Type != Unused Entry (ALL-ZERO) | |
829 | */ | |
830 | memset(unused_guid.b, 0, sizeof(unused_guid.b)); | |
831 | ||
832 | if (memcmp(pte->partition_type_guid.b, unused_guid.b, | |
833 | sizeof(unused_guid.b)) == 0) { | |
834 | ||
df70b1c2 | 835 | debug("%s: Found an unused PTE GUID at 0x%08X\n", __func__, |
9936be31 | 836 | (unsigned int)(uintptr_t)pte); |
07f3d789 | 837 | |
838 | return 0; | |
839 | } else { | |
840 | return 1; | |
841 | } | |
842 | } | |
843 | #endif |