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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> | |
02e43537 | 16 | #include <fdtdec.h> |
07f3d789 | 17 | #include <ide.h> |
e48f3741 | 18 | #include <inttypes.h> |
07f3d789 | 19 | #include <malloc.h> |
cf92e05c | 20 | #include <memalign.h> |
fae2bf22 | 21 | #include <part_efi.h> |
02e43537 | 22 | #include <linux/compiler.h> |
6eecc030 | 23 | #include <linux/ctype.h> |
07f3d789 | 24 | |
40684ddb ŁM |
25 | DECLARE_GLOBAL_DATA_PTR; |
26 | ||
2c1af9dc | 27 | #ifdef HAVE_BLOCK_DEVICE |
07f3d789 | 28 | /** |
29 | * efi_crc32() - EFI version of crc32 function | |
30 | * @buf: buffer to calculate crc32 of | |
31 | * @len - length of buf | |
32 | * | |
33 | * Description: Returns EFI-style CRC32 value for @buf | |
34 | */ | |
fae2bf22 | 35 | static inline u32 efi_crc32(const void *buf, u32 len) |
07f3d789 | 36 | { |
37 | return crc32(0, buf, len); | |
38 | } | |
39 | ||
40 | /* | |
41 | * Private function prototypes | |
42 | */ | |
43 | ||
44 | static int pmbr_part_valid(struct partition *part); | |
45 | static int is_pmbr_valid(legacy_mbr * mbr); | |
4101f687 | 46 | static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, |
e04350d2 | 47 | gpt_header *pgpt_head, gpt_entry **pgpt_pte); |
4101f687 SG |
48 | static gpt_entry *alloc_read_gpt_entries(struct blk_desc *dev_desc, |
49 | gpt_header *pgpt_head); | |
07f3d789 | 50 | static int is_pte_valid(gpt_entry * pte); |
51 | ||
6eecc030 LW |
52 | static char *print_efiname(gpt_entry *pte) |
53 | { | |
54 | static char name[PARTNAME_SZ + 1]; | |
55 | int i; | |
56 | for (i = 0; i < PARTNAME_SZ; i++) { | |
57 | u8 c; | |
58 | c = pte->partition_name[i] & 0xff; | |
59 | c = (c && !isprint(c)) ? '.' : c; | |
60 | name[i] = c; | |
61 | } | |
62 | name[PARTNAME_SZ] = 0; | |
63 | return name; | |
64 | } | |
65 | ||
b4414f4a SW |
66 | static efi_guid_t system_guid = PARTITION_SYSTEM_GUID; |
67 | ||
68 | static inline int is_bootable(gpt_entry *p) | |
69 | { | |
70 | return p->attributes.fields.legacy_bios_bootable || | |
71 | !memcmp(&(p->partition_type_guid), &system_guid, | |
72 | sizeof(efi_guid_t)); | |
73 | } | |
74 | ||
e1f6b0a0 SR |
75 | static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba, |
76 | lbaint_t lastlba) | |
77 | { | |
78 | uint32_t crc32_backup = 0; | |
79 | uint32_t calc_crc32; | |
80 | ||
81 | /* Check the GPT header signature */ | |
82 | if (le64_to_cpu(gpt_h->signature) != GPT_HEADER_SIGNATURE) { | |
83 | printf("%s signature is wrong: 0x%llX != 0x%llX\n", | |
84 | "GUID Partition Table Header", | |
85 | le64_to_cpu(gpt_h->signature), | |
86 | GPT_HEADER_SIGNATURE); | |
87 | return -1; | |
88 | } | |
89 | ||
90 | /* Check the GUID Partition Table CRC */ | |
91 | memcpy(&crc32_backup, &gpt_h->header_crc32, sizeof(crc32_backup)); | |
92 | memset(&gpt_h->header_crc32, 0, sizeof(gpt_h->header_crc32)); | |
93 | ||
94 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
95 | le32_to_cpu(gpt_h->header_size)); | |
96 | ||
97 | memcpy(&gpt_h->header_crc32, &crc32_backup, sizeof(crc32_backup)); | |
98 | ||
99 | if (calc_crc32 != le32_to_cpu(crc32_backup)) { | |
100 | printf("%s CRC is wrong: 0x%x != 0x%x\n", | |
101 | "GUID Partition Table Header", | |
102 | le32_to_cpu(crc32_backup), calc_crc32); | |
103 | return -1; | |
104 | } | |
105 | ||
106 | /* | |
107 | * Check that the my_lba entry points to the LBA that contains the GPT | |
108 | */ | |
109 | if (le64_to_cpu(gpt_h->my_lba) != lba) { | |
110 | printf("GPT: my_lba incorrect: %llX != " LBAF "\n", | |
111 | le64_to_cpu(gpt_h->my_lba), | |
112 | lba); | |
113 | return -1; | |
114 | } | |
115 | ||
116 | /* | |
117 | * Check that the first_usable_lba and that the last_usable_lba are | |
118 | * within the disk. | |
119 | */ | |
120 | if (le64_to_cpu(gpt_h->first_usable_lba) > lastlba) { | |
121 | printf("GPT: first_usable_lba incorrect: %llX > " LBAF "\n", | |
122 | le64_to_cpu(gpt_h->first_usable_lba), lastlba); | |
123 | return -1; | |
124 | } | |
125 | if (le64_to_cpu(gpt_h->last_usable_lba) > lastlba) { | |
126 | printf("GPT: last_usable_lba incorrect: %llX > " LBAF "\n", | |
127 | le64_to_cpu(gpt_h->last_usable_lba), lastlba); | |
128 | return -1; | |
129 | } | |
130 | ||
131 | debug("GPT: first_usable_lba: %llX last_usable_lba: %llX last lba: " | |
132 | LBAF "\n", le64_to_cpu(gpt_h->first_usable_lba), | |
133 | le64_to_cpu(gpt_h->last_usable_lba), lastlba); | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static int validate_gpt_entries(gpt_header *gpt_h, gpt_entry *gpt_e) | |
139 | { | |
140 | uint32_t calc_crc32; | |
141 | ||
142 | /* Check the GUID Partition Table Entry Array CRC */ | |
143 | calc_crc32 = efi_crc32((const unsigned char *)gpt_e, | |
144 | le32_to_cpu(gpt_h->num_partition_entries) * | |
145 | le32_to_cpu(gpt_h->sizeof_partition_entry)); | |
146 | ||
147 | if (calc_crc32 != le32_to_cpu(gpt_h->partition_entry_array_crc32)) { | |
148 | printf("%s: 0x%x != 0x%x\n", | |
149 | "GUID Partition Table Entry Array CRC is wrong", | |
150 | le32_to_cpu(gpt_h->partition_entry_array_crc32), | |
151 | calc_crc32); | |
152 | return -1; | |
153 | } | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | static void prepare_backup_gpt_header(gpt_header *gpt_h) | |
159 | { | |
160 | uint32_t calc_crc32; | |
161 | uint64_t val; | |
162 | ||
163 | /* recalculate the values for the Backup GPT Header */ | |
164 | val = le64_to_cpu(gpt_h->my_lba); | |
165 | gpt_h->my_lba = gpt_h->alternate_lba; | |
166 | gpt_h->alternate_lba = cpu_to_le64(val); | |
0ff7e585 SR |
167 | gpt_h->partition_entry_lba = |
168 | cpu_to_le64(le64_to_cpu(gpt_h->last_usable_lba) + 1); | |
e1f6b0a0 SR |
169 | gpt_h->header_crc32 = 0; |
170 | ||
171 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
172 | le32_to_cpu(gpt_h->header_size)); | |
173 | gpt_h->header_crc32 = cpu_to_le32(calc_crc32); | |
174 | } | |
175 | ||
bd42a942 | 176 | #if CONFIG_IS_ENABLED(EFI_PARTITION) |
07f3d789 | 177 | /* |
178 | * Public Functions (include/part.h) | |
179 | */ | |
180 | ||
73d6d18b AC |
181 | /* |
182 | * UUID is displayed as 32 hexadecimal digits, in 5 groups, | |
183 | * separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters | |
184 | */ | |
185 | int get_disk_guid(struct blk_desc * dev_desc, char *guid) | |
186 | { | |
187 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); | |
188 | gpt_entry *gpt_pte = NULL; | |
189 | unsigned char *guid_bin; | |
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, | |
193 | gpt_head, &gpt_pte) != 1) { | |
194 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); | |
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 -EINVAL; | |
200 | } else { | |
201 | printf("%s: *** Using Backup GPT ***\n", | |
202 | __func__); | |
203 | } | |
204 | } | |
205 | ||
206 | guid_bin = gpt_head->disk_guid.b; | |
207 | uuid_bin_to_str(guid_bin, guid, UUID_STR_FORMAT_GUID); | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
084bf4c2 | 212 | void part_print_efi(struct blk_desc *dev_desc) |
07f3d789 | 213 | { |
ae1768a7 | 214 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); |
deb5ca80 | 215 | gpt_entry *gpt_pte = NULL; |
07f3d789 | 216 | int i = 0; |
db9b6200 | 217 | char uuid[UUID_STR_LEN + 1]; |
a96a0e61 | 218 | unsigned char *uuid_bin; |
07f3d789 | 219 | |
07f3d789 | 220 | /* This function validates AND fills in the GPT header and PTE */ |
221 | if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
4715a811 | 222 | gpt_head, &gpt_pte) != 1) { |
df70b1c2 | 223 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); |
ae95fad5 SR |
224 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), |
225 | gpt_head, &gpt_pte) != 1) { | |
226 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
227 | __func__); | |
228 | return; | |
229 | } else { | |
230 | printf("%s: *** Using Backup GPT ***\n", | |
231 | __func__); | |
232 | } | |
07f3d789 | 233 | } |
234 | ||
deb5ca80 | 235 | debug("%s: gpt-entry at %p\n", __func__, gpt_pte); |
07f3d789 | 236 | |
788a8c1f | 237 | printf("Part\tStart LBA\tEnd LBA\t\tName\n"); |
13bf2f55 | 238 | printf("\tAttributes\n"); |
d718ded0 PM |
239 | printf("\tType GUID\n"); |
240 | printf("\tPartition GUID\n"); | |
f07cd2c4 | 241 | |
fae2bf22 | 242 | for (i = 0; i < le32_to_cpu(gpt_head->num_partition_entries); i++) { |
38a3021e SW |
243 | /* Stop at the first non valid PTE */ |
244 | if (!is_pte_valid(&gpt_pte[i])) | |
245 | break; | |
246 | ||
788a8c1f | 247 | printf("%3d\t0x%08llx\t0x%08llx\t\"%s\"\n", (i + 1), |
fae2bf22 CHP |
248 | le64_to_cpu(gpt_pte[i].starting_lba), |
249 | le64_to_cpu(gpt_pte[i].ending_lba), | |
788a8c1f | 250 | print_efiname(&gpt_pte[i])); |
13bf2f55 | 251 | printf("\tattrs:\t0x%016llx\n", gpt_pte[i].attributes.raw); |
a96a0e61 | 252 | uuid_bin = (unsigned char *)gpt_pte[i].partition_type_guid.b; |
d718ded0 | 253 | uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); |
f07cd2c4 | 254 | printf("\ttype:\t%s\n", uuid); |
bcb41dca PD |
255 | #ifdef CONFIG_PARTITION_TYPE_GUID |
256 | if (!uuid_guid_get_str(uuid_bin, uuid)) | |
257 | printf("\ttype:\t%s\n", uuid); | |
258 | #endif | |
a96a0e61 | 259 | uuid_bin = (unsigned char *)gpt_pte[i].unique_partition_guid.b; |
d718ded0 PM |
260 | uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); |
261 | printf("\tguid:\t%s\n", uuid); | |
07f3d789 | 262 | } |
263 | ||
264 | /* Remember to free pte */ | |
deb5ca80 | 265 | free(gpt_pte); |
07f3d789 | 266 | return; |
267 | } | |
268 | ||
3e8bd469 SG |
269 | int part_get_info_efi(struct blk_desc *dev_desc, int part, |
270 | disk_partition_t *info) | |
07f3d789 | 271 | { |
ae1768a7 | 272 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); |
deb5ca80 | 273 | gpt_entry *gpt_pte = NULL; |
07f3d789 | 274 | |
275 | /* "part" argument must be at least 1 */ | |
4708a07c | 276 | if (part < 1) { |
df70b1c2 | 277 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 278 | return -1; |
279 | } | |
280 | ||
281 | /* This function validates AND fills in the GPT header and PTE */ | |
282 | if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
4715a811 | 283 | gpt_head, &gpt_pte) != 1) { |
df70b1c2 | 284 | printf("%s: *** ERROR: Invalid GPT ***\n", __func__); |
ae95fad5 SR |
285 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), |
286 | gpt_head, &gpt_pte) != 1) { | |
287 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
288 | __func__); | |
289 | return -1; | |
290 | } else { | |
291 | printf("%s: *** Using Backup GPT ***\n", | |
292 | __func__); | |
293 | } | |
07f3d789 | 294 | } |
295 | ||
fae2bf22 | 296 | if (part > le32_to_cpu(gpt_head->num_partition_entries) || |
c04d68c6 | 297 | !is_pte_valid(&gpt_pte[part - 1])) { |
6d2ee5a3 | 298 | debug("%s: *** ERROR: Invalid partition number %d ***\n", |
c04d68c6 | 299 | __func__, part); |
6d2ee5a3 | 300 | free(gpt_pte); |
c04d68c6 SW |
301 | return -1; |
302 | } | |
303 | ||
e04350d2 SR |
304 | /* The 'lbaint_t' casting may limit the maximum disk size to 2 TB */ |
305 | info->start = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].starting_lba); | |
50970839 | 306 | /* The ending LBA is inclusive, to calculate size, add 1 to it */ |
e04350d2 | 307 | info->size = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].ending_lba) + 1 |
50970839 | 308 | - info->start; |
ae1768a7 | 309 | info->blksz = dev_desc->blksz; |
07f3d789 | 310 | |
6eecc030 | 311 | sprintf((char *)info->name, "%s", |
deb5ca80 | 312 | print_efiname(&gpt_pte[part - 1])); |
192bc694 | 313 | strcpy((char *)info->type, "U-Boot"); |
b4414f4a | 314 | info->bootable = is_bootable(&gpt_pte[part - 1]); |
b331cd62 | 315 | #if CONFIG_IS_ENABLED(PARTITION_UUIDS) |
d718ded0 PM |
316 | uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid, |
317 | UUID_STR_FORMAT_GUID); | |
894bfbbf | 318 | #endif |
7561b258 PD |
319 | #ifdef CONFIG_PARTITION_TYPE_GUID |
320 | uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b, | |
321 | info->type_guid, UUID_STR_FORMAT_GUID); | |
322 | #endif | |
07f3d789 | 323 | |
60bf9416 | 324 | debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__, |
04735e9c | 325 | info->start, info->size, info->name); |
07f3d789 | 326 | |
327 | /* Remember to free pte */ | |
deb5ca80 | 328 | free(gpt_pte); |
07f3d789 | 329 | return 0; |
330 | } | |
331 | ||
084bf4c2 | 332 | static int part_test_efi(struct blk_desc *dev_desc) |
07f3d789 | 333 | { |
ae1768a7 | 334 | ALLOC_CACHE_ALIGN_BUFFER_PAD(legacy_mbr, legacymbr, 1, dev_desc->blksz); |
07f3d789 | 335 | |
336 | /* Read legacy MBR from block 0 and validate it */ | |
2a981dc2 | 337 | if ((blk_dread(dev_desc, 0, 1, (ulong *)legacymbr) != 1) |
f75dd584 | 338 | || (is_pmbr_valid(legacymbr) != 1)) { |
07f3d789 | 339 | return -1; |
340 | } | |
341 | return 0; | |
342 | } | |
343 | ||
40684ddb ŁM |
344 | /** |
345 | * set_protective_mbr(): Set the EFI protective MBR | |
346 | * @param dev_desc - block device descriptor | |
347 | * | |
348 | * @return - zero on success, otherwise error | |
349 | */ | |
4101f687 | 350 | static int set_protective_mbr(struct blk_desc *dev_desc) |
40684ddb | 351 | { |
40684ddb | 352 | /* Setup the Protective MBR */ |
61fcc7d2 HP |
353 | ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, p_mbr, 1); |
354 | memset(p_mbr, 0, sizeof(*p_mbr)); | |
355 | ||
40684ddb ŁM |
356 | if (p_mbr == NULL) { |
357 | printf("%s: calloc failed!\n", __func__); | |
358 | return -1; | |
359 | } | |
e163a931 VT |
360 | |
361 | /* Read MBR to backup boot code if it exists */ | |
362 | if (blk_dread(dev_desc, 0, 1, p_mbr) != 1) { | |
363 | error("** Can't read from device %d **\n", dev_desc->devnum); | |
364 | return -1; | |
365 | } | |
366 | ||
40684ddb ŁM |
367 | /* Append signature */ |
368 | p_mbr->signature = MSDOS_MBR_SIGNATURE; | |
369 | p_mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT; | |
370 | p_mbr->partition_record[0].start_sect = 1; | |
b349abbf | 371 | p_mbr->partition_record[0].nr_sects = (u32) dev_desc->lba - 1; |
40684ddb ŁM |
372 | |
373 | /* Write MBR sector to the MMC device */ | |
2a981dc2 | 374 | if (blk_dwrite(dev_desc, 0, 1, p_mbr) != 1) { |
40684ddb | 375 | printf("** Can't write to device %d **\n", |
bcce53d0 | 376 | dev_desc->devnum); |
40684ddb ŁM |
377 | return -1; |
378 | } | |
379 | ||
40684ddb ŁM |
380 | return 0; |
381 | } | |
382 | ||
4101f687 | 383 | int write_gpt_table(struct blk_desc *dev_desc, |
40684ddb ŁM |
384 | gpt_header *gpt_h, gpt_entry *gpt_e) |
385 | { | |
ae1768a7 EE |
386 | const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries |
387 | * sizeof(gpt_entry)), dev_desc); | |
40684ddb | 388 | u32 calc_crc32; |
40684ddb ŁM |
389 | |
390 | debug("max lba: %x\n", (u32) dev_desc->lba); | |
391 | /* Setup the Protective MBR */ | |
392 | if (set_protective_mbr(dev_desc) < 0) | |
393 | goto err; | |
394 | ||
395 | /* Generate CRC for the Primary GPT Header */ | |
396 | calc_crc32 = efi_crc32((const unsigned char *)gpt_e, | |
397 | le32_to_cpu(gpt_h->num_partition_entries) * | |
398 | le32_to_cpu(gpt_h->sizeof_partition_entry)); | |
399 | gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32); | |
400 | ||
401 | calc_crc32 = efi_crc32((const unsigned char *)gpt_h, | |
402 | le32_to_cpu(gpt_h->header_size)); | |
403 | gpt_h->header_crc32 = cpu_to_le32(calc_crc32); | |
404 | ||
405 | /* Write the First GPT to the block right after the Legacy MBR */ | |
2a981dc2 | 406 | if (blk_dwrite(dev_desc, 1, 1, gpt_h) != 1) |
40684ddb ŁM |
407 | goto err; |
408 | ||
02e43537 PT |
409 | if (blk_dwrite(dev_desc, le64_to_cpu(gpt_h->partition_entry_lba), |
410 | pte_blk_cnt, gpt_e) != pte_blk_cnt) | |
40684ddb ŁM |
411 | goto err; |
412 | ||
e1f6b0a0 | 413 | prepare_backup_gpt_header(gpt_h); |
40684ddb | 414 | |
2a981dc2 SG |
415 | if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->last_usable_lba) |
416 | + 1, pte_blk_cnt, gpt_e) != pte_blk_cnt) | |
40684ddb ŁM |
417 | goto err; |
418 | ||
2a981dc2 SG |
419 | if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->my_lba), 1, |
420 | gpt_h) != 1) | |
40684ddb ŁM |
421 | goto err; |
422 | ||
423 | debug("GPT successfully written to block device!\n"); | |
424 | return 0; | |
425 | ||
426 | err: | |
bcce53d0 | 427 | printf("** Can't write to device %d **\n", dev_desc->devnum); |
40684ddb ŁM |
428 | return -1; |
429 | } | |
430 | ||
431 | int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e, | |
432 | disk_partition_t *partitions, int parts) | |
433 | { | |
e04350d2 SR |
434 | lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba); |
435 | lbaint_t start; | |
436 | lbaint_t last_usable_lba = (lbaint_t) | |
437 | le64_to_cpu(gpt_h->last_usable_lba); | |
40684ddb | 438 | int i, k; |
67cd4a63 | 439 | size_t efiname_len, dosname_len; |
b331cd62 | 440 | #if CONFIG_IS_ENABLED(PARTITION_UUIDS) |
40684ddb | 441 | char *str_uuid; |
a96a0e61 | 442 | unsigned char *bin_uuid; |
40684ddb | 443 | #endif |
7561b258 PD |
444 | #ifdef CONFIG_PARTITION_TYPE_GUID |
445 | char *str_type_guid; | |
446 | unsigned char *bin_type_guid; | |
447 | #endif | |
40684ddb ŁM |
448 | |
449 | for (i = 0; i < parts; i++) { | |
450 | /* partition starting lba */ | |
451 | start = partitions[i].start; | |
452 | if (start && (start < offset)) { | |
453 | printf("Partition overlap\n"); | |
454 | return -1; | |
455 | } | |
456 | if (start) { | |
457 | gpt_e[i].starting_lba = cpu_to_le64(start); | |
458 | offset = start + partitions[i].size; | |
459 | } else { | |
460 | gpt_e[i].starting_lba = cpu_to_le64(offset); | |
461 | offset += partitions[i].size; | |
462 | } | |
a5653867 | 463 | if (offset > (last_usable_lba + 1)) { |
40684ddb ŁM |
464 | printf("Partitions layout exceds disk size\n"); |
465 | return -1; | |
466 | } | |
467 | /* partition ending lba */ | |
468 | if ((i == parts - 1) && (partitions[i].size == 0)) | |
469 | /* extend the last partition to maximuim */ | |
470 | gpt_e[i].ending_lba = gpt_h->last_usable_lba; | |
471 | else | |
472 | gpt_e[i].ending_lba = cpu_to_le64(offset - 1); | |
473 | ||
7561b258 PD |
474 | #ifdef CONFIG_PARTITION_TYPE_GUID |
475 | str_type_guid = partitions[i].type_guid; | |
476 | bin_type_guid = gpt_e[i].partition_type_guid.b; | |
477 | if (strlen(str_type_guid)) { | |
478 | if (uuid_str_to_bin(str_type_guid, bin_type_guid, | |
479 | UUID_STR_FORMAT_GUID)) { | |
480 | printf("Partition no. %d: invalid type guid: %s\n", | |
481 | i, str_type_guid); | |
482 | return -1; | |
483 | } | |
484 | } else { | |
485 | /* default partition type GUID */ | |
486 | memcpy(bin_type_guid, | |
487 | &PARTITION_BASIC_DATA_GUID, 16); | |
488 | } | |
489 | #else | |
40684ddb ŁM |
490 | /* partition type GUID */ |
491 | memcpy(gpt_e[i].partition_type_guid.b, | |
492 | &PARTITION_BASIC_DATA_GUID, 16); | |
7561b258 | 493 | #endif |
40684ddb | 494 | |
b331cd62 | 495 | #if CONFIG_IS_ENABLED(PARTITION_UUIDS) |
40684ddb | 496 | str_uuid = partitions[i].uuid; |
a96a0e61 PM |
497 | bin_uuid = gpt_e[i].unique_partition_guid.b; |
498 | ||
9da52f8f | 499 | if (uuid_str_to_bin(str_uuid, bin_uuid, UUID_STR_FORMAT_GUID)) { |
40684ddb ŁM |
500 | printf("Partition no. %d: invalid guid: %s\n", |
501 | i, str_uuid); | |
502 | return -1; | |
503 | } | |
504 | #endif | |
505 | ||
506 | /* partition attributes */ | |
507 | memset(&gpt_e[i].attributes, 0, | |
508 | sizeof(gpt_entry_attributes)); | |
509 | ||
cfdaf4ca PD |
510 | if (partitions[i].bootable) |
511 | gpt_e[i].attributes.fields.legacy_bios_bootable = 1; | |
512 | ||
40684ddb | 513 | /* partition name */ |
67cd4a63 | 514 | efiname_len = sizeof(gpt_e[i].partition_name) |
40684ddb | 515 | / sizeof(efi_char16_t); |
67cd4a63 MV |
516 | dosname_len = sizeof(partitions[i].name); |
517 | ||
518 | memset(gpt_e[i].partition_name, 0, | |
519 | sizeof(gpt_e[i].partition_name)); | |
520 | ||
521 | for (k = 0; k < min(dosname_len, efiname_len); k++) | |
40684ddb ŁM |
522 | gpt_e[i].partition_name[k] = |
523 | (efi_char16_t)(partitions[i].name[k]); | |
524 | ||
e04350d2 SR |
525 | debug("%s: name: %s offset[%d]: 0x" LBAF |
526 | " size[%d]: 0x" LBAF "\n", | |
40684ddb ŁM |
527 | __func__, partitions[i].name, i, |
528 | offset, i, partitions[i].size); | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
02e43537 PT |
534 | static uint32_t partition_entries_offset(struct blk_desc *dev_desc) |
535 | { | |
536 | uint32_t offset_blks = 2; | |
537 | int __maybe_unused config_offset; | |
538 | ||
539 | #if defined(CONFIG_EFI_PARTITION_ENTRIES_OFF) | |
540 | /* | |
541 | * Some architectures require their SPL loader at a fixed | |
542 | * address within the first 16KB of the disk. To avoid an | |
543 | * overlap with the partition entries of the EFI partition | |
544 | * table, the first safe offset (in bytes, from the start of | |
545 | * the disk) for the entries can be set in | |
546 | * CONFIG_EFI_PARTITION_ENTRIES_OFF. | |
547 | */ | |
548 | offset_blks = | |
549 | PAD_TO_BLOCKSIZE(CONFIG_EFI_PARTITION_ENTRIES_OFF, dev_desc); | |
550 | #endif | |
551 | ||
552 | #if defined(CONFIG_OF_CONTROL) | |
553 | /* | |
554 | * Allow the offset of the first partition entires (in bytes | |
555 | * from the start of the device) to be specified as a property | |
556 | * of the device tree '/config' node. | |
557 | */ | |
558 | config_offset = fdtdec_get_config_int(gd->fdt_blob, | |
559 | "u-boot,efi-partition-entries-offset", | |
560 | -EINVAL); | |
561 | if (config_offset != -EINVAL) | |
562 | offset_blks = PAD_TO_BLOCKSIZE(config_offset, dev_desc); | |
563 | #endif | |
564 | ||
565 | debug("efi: partition entries offset (in blocks): %d\n", offset_blks); | |
566 | ||
567 | /* | |
568 | * The earliest LBA this can be at is LBA#2 (i.e. right behind | |
569 | * the (protective) MBR and the GPT header. | |
570 | */ | |
571 | if (offset_blks < 2) | |
572 | offset_blks = 2; | |
573 | ||
574 | return offset_blks; | |
575 | } | |
576 | ||
4101f687 | 577 | int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, |
40684ddb ŁM |
578 | char *str_guid, int parts_count) |
579 | { | |
580 | gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE); | |
581 | gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1); | |
582 | gpt_h->header_size = cpu_to_le32(sizeof(gpt_header)); | |
583 | gpt_h->my_lba = cpu_to_le64(1); | |
584 | gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1); | |
40684ddb | 585 | gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34); |
02e43537 PT |
586 | gpt_h->partition_entry_lba = |
587 | cpu_to_le64(partition_entries_offset(dev_desc)); | |
588 | gpt_h->first_usable_lba = | |
589 | cpu_to_le64(le64_to_cpu(gpt_h->partition_entry_lba) + 32); | |
40684ddb ŁM |
590 | gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS); |
591 | gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry)); | |
592 | gpt_h->header_crc32 = 0; | |
593 | gpt_h->partition_entry_array_crc32 = 0; | |
594 | ||
d718ded0 | 595 | if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID)) |
40684ddb ŁM |
596 | return -1; |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
4101f687 | 601 | int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, |
40684ddb ŁM |
602 | disk_partition_t *partitions, int parts_count) |
603 | { | |
604 | int ret; | |
605 | ||
ae1768a7 EE |
606 | gpt_header *gpt_h = calloc(1, PAD_TO_BLOCKSIZE(sizeof(gpt_header), |
607 | dev_desc)); | |
608 | gpt_entry *gpt_e; | |
609 | ||
40684ddb ŁM |
610 | if (gpt_h == NULL) { |
611 | printf("%s: calloc failed!\n", __func__); | |
612 | return -1; | |
613 | } | |
614 | ||
ae1768a7 EE |
615 | gpt_e = calloc(1, PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS |
616 | * sizeof(gpt_entry), | |
617 | dev_desc)); | |
40684ddb ŁM |
618 | if (gpt_e == NULL) { |
619 | printf("%s: calloc failed!\n", __func__); | |
620 | free(gpt_h); | |
621 | return -1; | |
622 | } | |
623 | ||
624 | /* Generate Primary GPT header (LBA1) */ | |
625 | ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count); | |
626 | if (ret) | |
627 | goto err; | |
628 | ||
629 | /* Generate partition entries */ | |
630 | ret = gpt_fill_pte(gpt_h, gpt_e, partitions, parts_count); | |
631 | if (ret) | |
632 | goto err; | |
633 | ||
634 | /* Write GPT partition table */ | |
635 | ret = write_gpt_table(dev_desc, gpt_h, gpt_e); | |
636 | ||
637 | err: | |
638 | free(gpt_e); | |
639 | free(gpt_h); | |
640 | return ret; | |
641 | } | |
0ff7e585 | 642 | |
cef68bf9 LM |
643 | static void gpt_convert_efi_name_to_char(char *s, efi_char16_t *es, int n) |
644 | { | |
645 | char *ess = (char *)es; | |
646 | int i, j; | |
647 | ||
648 | memset(s, '\0', n); | |
649 | ||
650 | for (i = 0, j = 0; j < n; i += 2, j++) { | |
651 | s[j] = ess[i]; | |
652 | if (!ess[i]) | |
653 | return; | |
654 | } | |
655 | } | |
656 | ||
4101f687 | 657 | int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, |
cef68bf9 LM |
658 | gpt_entry **gpt_pte) |
659 | { | |
660 | /* | |
661 | * This function validates AND | |
662 | * fills in the GPT header and PTE | |
663 | */ | |
664 | if (is_gpt_valid(dev_desc, | |
665 | GPT_PRIMARY_PARTITION_TABLE_LBA, | |
666 | gpt_head, gpt_pte) != 1) { | |
667 | printf("%s: *** ERROR: Invalid GPT ***\n", | |
668 | __func__); | |
669 | return -1; | |
670 | } | |
671 | if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), | |
672 | gpt_head, gpt_pte) != 1) { | |
673 | printf("%s: *** ERROR: Invalid Backup GPT ***\n", | |
674 | __func__); | |
675 | return -1; | |
676 | } | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
4101f687 | 681 | int gpt_verify_partitions(struct blk_desc *dev_desc, |
cef68bf9 LM |
682 | disk_partition_t *partitions, int parts, |
683 | gpt_header *gpt_head, gpt_entry **gpt_pte) | |
684 | { | |
685 | char efi_str[PARTNAME_SZ + 1]; | |
686 | u64 gpt_part_size; | |
687 | gpt_entry *gpt_e; | |
688 | int ret, i; | |
689 | ||
690 | ret = gpt_verify_headers(dev_desc, gpt_head, gpt_pte); | |
691 | if (ret) | |
692 | return ret; | |
693 | ||
694 | gpt_e = *gpt_pte; | |
695 | ||
696 | for (i = 0; i < parts; i++) { | |
697 | if (i == gpt_head->num_partition_entries) { | |
698 | error("More partitions than allowed!\n"); | |
699 | return -1; | |
700 | } | |
701 | ||
702 | /* Check if GPT and ENV partition names match */ | |
703 | gpt_convert_efi_name_to_char(efi_str, gpt_e[i].partition_name, | |
704 | PARTNAME_SZ + 1); | |
705 | ||
706 | debug("%s: part: %2d name - GPT: %16s, ENV: %16s ", | |
707 | __func__, i, efi_str, partitions[i].name); | |
708 | ||
709 | if (strncmp(efi_str, (char *)partitions[i].name, | |
710 | sizeof(partitions->name))) { | |
711 | error("Partition name: %s does not match %s!\n", | |
712 | efi_str, (char *)partitions[i].name); | |
713 | return -1; | |
714 | } | |
715 | ||
716 | /* Check if GPT and ENV sizes match */ | |
717 | gpt_part_size = le64_to_cpu(gpt_e[i].ending_lba) - | |
718 | le64_to_cpu(gpt_e[i].starting_lba) + 1; | |
719 | debug("size(LBA) - GPT: %8llu, ENV: %8llu ", | |
f8d6165d SG |
720 | (unsigned long long)gpt_part_size, |
721 | (unsigned long long)partitions[i].size); | |
cef68bf9 LM |
722 | |
723 | if (le64_to_cpu(gpt_part_size) != partitions[i].size) { | |
c2fdd345 KY |
724 | /* We do not check the extend partition size */ |
725 | if ((i == parts - 1) && (partitions[i].size == 0)) | |
726 | continue; | |
727 | ||
cef68bf9 | 728 | error("Partition %s size: %llu does not match %llu!\n", |
f8d6165d SG |
729 | efi_str, (unsigned long long)gpt_part_size, |
730 | (unsigned long long)partitions[i].size); | |
cef68bf9 LM |
731 | return -1; |
732 | } | |
733 | ||
734 | /* | |
735 | * Start address is optional - check only if provided | |
736 | * in '$partition' variable | |
737 | */ | |
738 | if (!partitions[i].start) { | |
739 | debug("\n"); | |
740 | continue; | |
741 | } | |
742 | ||
743 | /* Check if GPT and ENV start LBAs match */ | |
744 | debug("start LBA - GPT: %8llu, ENV: %8llu\n", | |
745 | le64_to_cpu(gpt_e[i].starting_lba), | |
f8d6165d | 746 | (unsigned long long)partitions[i].start); |
cef68bf9 LM |
747 | |
748 | if (le64_to_cpu(gpt_e[i].starting_lba) != partitions[i].start) { | |
749 | error("Partition %s start: %llu does not match %llu!\n", | |
750 | efi_str, le64_to_cpu(gpt_e[i].starting_lba), | |
f8d6165d | 751 | (unsigned long long)partitions[i].start); |
cef68bf9 LM |
752 | return -1; |
753 | } | |
754 | } | |
755 | ||
756 | return 0; | |
757 | } | |
758 | ||
4101f687 | 759 | int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf) |
0ff7e585 SR |
760 | { |
761 | gpt_header *gpt_h; | |
762 | gpt_entry *gpt_e; | |
763 | ||
764 | /* determine start of GPT Header in the buffer */ | |
765 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * | |
766 | dev_desc->blksz); | |
767 | if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
768 | dev_desc->lba)) | |
769 | return -1; | |
770 | ||
771 | /* determine start of GPT Entries in the buffer */ | |
772 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * | |
773 | dev_desc->blksz); | |
774 | if (validate_gpt_entries(gpt_h, gpt_e)) | |
775 | return -1; | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
4101f687 | 780 | int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf) |
0ff7e585 SR |
781 | { |
782 | gpt_header *gpt_h; | |
783 | gpt_entry *gpt_e; | |
784 | int gpt_e_blk_cnt; | |
785 | lbaint_t lba; | |
786 | int cnt; | |
787 | ||
788 | if (is_valid_gpt_buf(dev_desc, buf)) | |
789 | return -1; | |
790 | ||
791 | /* determine start of GPT Header in the buffer */ | |
792 | gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * | |
793 | dev_desc->blksz); | |
794 | ||
795 | /* determine start of GPT Entries in the buffer */ | |
796 | gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * | |
797 | dev_desc->blksz); | |
798 | gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) * | |
799 | le32_to_cpu(gpt_h->sizeof_partition_entry)), | |
800 | dev_desc); | |
801 | ||
802 | /* write MBR */ | |
803 | lba = 0; /* MBR is always at 0 */ | |
804 | cnt = 1; /* MBR (1 block) */ | |
2a981dc2 | 805 | if (blk_dwrite(dev_desc, lba, cnt, buf) != cnt) { |
0ff7e585 SR |
806 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
807 | __func__, "MBR", cnt, lba); | |
808 | return 1; | |
809 | } | |
810 | ||
811 | /* write Primary GPT */ | |
812 | lba = GPT_PRIMARY_PARTITION_TABLE_LBA; | |
813 | cnt = 1; /* GPT Header (1 block) */ | |
2a981dc2 | 814 | if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) { |
0ff7e585 SR |
815 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
816 | __func__, "Primary GPT Header", cnt, lba); | |
817 | return 1; | |
818 | } | |
819 | ||
820 | lba = le64_to_cpu(gpt_h->partition_entry_lba); | |
821 | cnt = gpt_e_blk_cnt; | |
2a981dc2 | 822 | if (blk_dwrite(dev_desc, lba, cnt, gpt_e) != cnt) { |
0ff7e585 SR |
823 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
824 | __func__, "Primary GPT Entries", cnt, lba); | |
825 | return 1; | |
826 | } | |
827 | ||
828 | prepare_backup_gpt_header(gpt_h); | |
829 | ||
830 | /* write Backup GPT */ | |
831 | lba = le64_to_cpu(gpt_h->partition_entry_lba); | |
832 | cnt = gpt_e_blk_cnt; | |
2a981dc2 | 833 | if (blk_dwrite(dev_desc, lba, cnt, gpt_e) != cnt) { |
0ff7e585 SR |
834 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
835 | __func__, "Backup GPT Entries", cnt, lba); | |
836 | return 1; | |
837 | } | |
838 | ||
839 | lba = le64_to_cpu(gpt_h->my_lba); | |
840 | cnt = 1; /* GPT Header (1 block) */ | |
2a981dc2 | 841 | if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) { |
0ff7e585 SR |
842 | printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", |
843 | __func__, "Backup GPT Header", cnt, lba); | |
844 | return 1; | |
845 | } | |
846 | ||
847 | return 0; | |
848 | } | |
40684ddb ŁM |
849 | #endif |
850 | ||
07f3d789 | 851 | /* |
852 | * Private functions | |
853 | */ | |
854 | /* | |
855 | * pmbr_part_valid(): Check for EFI partition signature | |
856 | * | |
857 | * Returns: 1 if EFI GPT partition type is found. | |
858 | */ | |
859 | static int pmbr_part_valid(struct partition *part) | |
860 | { | |
861 | if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && | |
8faefadb | 862 | get_unaligned_le32(&part->start_sect) == 1UL) { |
07f3d789 | 863 | return 1; |
864 | } | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
869 | /* | |
870 | * is_pmbr_valid(): test Protective MBR for validity | |
871 | * | |
872 | * Returns: 1 if PMBR is valid, 0 otherwise. | |
873 | * Validity depends on two things: | |
874 | * 1) MSDOS signature is in the last two bytes of the MBR | |
875 | * 2) One partition of type 0xEE is found, checked by pmbr_part_valid() | |
876 | */ | |
877 | static int is_pmbr_valid(legacy_mbr * mbr) | |
878 | { | |
879 | int i = 0; | |
880 | ||
fae2bf22 | 881 | if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) |
07f3d789 | 882 | return 0; |
07f3d789 | 883 | |
884 | for (i = 0; i < 4; i++) { | |
885 | if (pmbr_part_valid(&mbr->partition_record[i])) { | |
886 | return 1; | |
887 | } | |
888 | } | |
889 | return 0; | |
890 | } | |
891 | ||
892 | /** | |
893 | * is_gpt_valid() - tests one GPT header and PTEs for validity | |
894 | * | |
895 | * lba is the logical block address of the GPT header to test | |
896 | * gpt is a GPT header ptr, filled on return. | |
897 | * ptes is a PTEs ptr, filled on return. | |
898 | * | |
899 | * Description: returns 1 if valid, 0 on error. | |
900 | * If valid, returns pointers to PTEs. | |
901 | */ | |
4101f687 | 902 | static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, |
e04350d2 | 903 | gpt_header *pgpt_head, gpt_entry **pgpt_pte) |
07f3d789 | 904 | { |
07f3d789 | 905 | if (!dev_desc || !pgpt_head) { |
df70b1c2 | 906 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 907 | return 0; |
908 | } | |
909 | ||
910 | /* Read GPT Header from device */ | |
2a981dc2 | 911 | if (blk_dread(dev_desc, (lbaint_t)lba, 1, pgpt_head) != 1) { |
07f3d789 | 912 | printf("*** ERROR: Can't read GPT header ***\n"); |
913 | return 0; | |
914 | } | |
915 | ||
e1f6b0a0 | 916 | if (validate_gpt_header(pgpt_head, (lbaint_t)lba, dev_desc->lba)) |
07f3d789 | 917 | return 0; |
07f3d789 | 918 | |
919 | /* Read and allocate Partition Table Entries */ | |
920 | *pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head); | |
921 | if (*pgpt_pte == NULL) { | |
922 | printf("GPT: Failed to allocate memory for PTE\n"); | |
923 | return 0; | |
924 | } | |
925 | ||
e1f6b0a0 | 926 | if (validate_gpt_entries(pgpt_head, *pgpt_pte)) { |
deb5ca80 | 927 | free(*pgpt_pte); |
07f3d789 | 928 | return 0; |
929 | } | |
930 | ||
931 | /* We're done, all's well */ | |
932 | return 1; | |
933 | } | |
934 | ||
935 | /** | |
936 | * alloc_read_gpt_entries(): reads partition entries from disk | |
937 | * @dev_desc | |
938 | * @gpt - GPT header | |
939 | * | |
940 | * Description: Returns ptes on success, NULL on error. | |
941 | * Allocates space for PTEs based on information found in @gpt. | |
942 | * Notes: remember to free pte when you're done! | |
943 | */ | |
4101f687 SG |
944 | static gpt_entry *alloc_read_gpt_entries(struct blk_desc *dev_desc, |
945 | gpt_header *pgpt_head) | |
07f3d789 | 946 | { |
ae1768a7 | 947 | size_t count = 0, blk_cnt; |
7c4213f6 | 948 | lbaint_t blk; |
07f3d789 | 949 | gpt_entry *pte = NULL; |
950 | ||
951 | if (!dev_desc || !pgpt_head) { | |
df70b1c2 | 952 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 953 | return NULL; |
954 | } | |
955 | ||
fae2bf22 CHP |
956 | count = le32_to_cpu(pgpt_head->num_partition_entries) * |
957 | le32_to_cpu(pgpt_head->sizeof_partition_entry); | |
07f3d789 | 958 | |
5afb8d15 | 959 | debug("%s: count = %u * %u = %lu\n", __func__, |
fae2bf22 | 960 | (u32) le32_to_cpu(pgpt_head->num_partition_entries), |
5afb8d15 SG |
961 | (u32) le32_to_cpu(pgpt_head->sizeof_partition_entry), |
962 | (ulong)count); | |
07f3d789 | 963 | |
964 | /* Allocate memory for PTE, remember to FREE */ | |
965 | if (count != 0) { | |
ae1768a7 EE |
966 | pte = memalign(ARCH_DMA_MINALIGN, |
967 | PAD_TO_BLOCKSIZE(count, dev_desc)); | |
07f3d789 | 968 | } |
969 | ||
970 | if (count == 0 || pte == NULL) { | |
5afb8d15 SG |
971 | printf("%s: ERROR: Can't allocate %#lX bytes for GPT Entries\n", |
972 | __func__, (ulong)count); | |
07f3d789 | 973 | return NULL; |
974 | } | |
975 | ||
976 | /* Read GPT Entries from device */ | |
7c4213f6 | 977 | blk = le64_to_cpu(pgpt_head->partition_entry_lba); |
ae1768a7 | 978 | blk_cnt = BLOCK_CNT(count, dev_desc); |
2a981dc2 | 979 | if (blk_dread(dev_desc, blk, (lbaint_t)blk_cnt, pte) != blk_cnt) { |
07f3d789 | 980 | printf("*** ERROR: Can't read GPT Entries ***\n"); |
981 | free(pte); | |
982 | return NULL; | |
983 | } | |
984 | return pte; | |
985 | } | |
986 | ||
987 | /** | |
988 | * is_pte_valid(): validates a single Partition Table Entry | |
989 | * @gpt_entry - Pointer to a single Partition Table Entry | |
990 | * | |
991 | * Description: returns 1 if valid, 0 on error. | |
992 | */ | |
993 | static int is_pte_valid(gpt_entry * pte) | |
994 | { | |
995 | efi_guid_t unused_guid; | |
996 | ||
997 | if (!pte) { | |
df70b1c2 | 998 | printf("%s: Invalid Argument(s)\n", __func__); |
07f3d789 | 999 | return 0; |
1000 | } | |
1001 | ||
1002 | /* Only one validation for now: | |
1003 | * The GUID Partition Type != Unused Entry (ALL-ZERO) | |
1004 | */ | |
1005 | memset(unused_guid.b, 0, sizeof(unused_guid.b)); | |
1006 | ||
1007 | if (memcmp(pte->partition_type_guid.b, unused_guid.b, | |
1008 | sizeof(unused_guid.b)) == 0) { | |
1009 | ||
df70b1c2 | 1010 | debug("%s: Found an unused PTE GUID at 0x%08X\n", __func__, |
9936be31 | 1011 | (unsigned int)(uintptr_t)pte); |
07f3d789 | 1012 | |
1013 | return 0; | |
1014 | } else { | |
1015 | return 1; | |
1016 | } | |
1017 | } | |
96e5b03c SG |
1018 | |
1019 | /* | |
1020 | * Add an 'a_' prefix so it comes before 'dos' in the linker list. We need to | |
1021 | * check EFI first, since a DOS partition is often used as a 'protective MBR' | |
1022 | * with EFI. | |
1023 | */ | |
1024 | U_BOOT_PART_TYPE(a_efi) = { | |
1025 | .name = "EFI", | |
1026 | .part_type = PART_TYPE_EFI, | |
87b8530f | 1027 | .max_entries = GPT_ENTRY_NUMBERS, |
3e8bd469 | 1028 | .get_info = part_get_info_ptr(part_get_info_efi), |
084bf4c2 SG |
1029 | .print = part_print_ptr(part_print_efi), |
1030 | .test = part_test_efi, | |
96e5b03c | 1031 | }; |
07f3d789 | 1032 | #endif |