1 /* 2 * Copyright (C) 2008 RuggedCom, Inc. 3 * Richard Retanubun <RichardRetanubun@RuggedCom.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 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 12 */ 13 #include <asm/unaligned.h> 14 #include <common.h> 15 #include <command.h> 16 #include <fdtdec.h> 17 #include <ide.h> 18 #include <inttypes.h> 19 #include <malloc.h> 20 #include <memalign.h> 21 #include <part_efi.h> 22 #include <linux/compiler.h> 23 #include <linux/ctype.h> 24 25 DECLARE_GLOBAL_DATA_PTR; 26 27 #ifdef HAVE_BLOCK_DEVICE 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 */ 35 static inline u32 efi_crc32(const void *buf, u32 len) 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); 46 static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, 47 gpt_header *pgpt_head, gpt_entry **pgpt_pte); 48 static gpt_entry *alloc_read_gpt_entries(struct blk_desc *dev_desc, 49 gpt_header *pgpt_head); 50 static int is_pte_valid(gpt_entry * pte); 51 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 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 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 if (le64_to_cpu(gpt_h->signature) != 0) 84 printf("%s signature is wrong: 0x%llX != 0x%llX\n", 85 "GUID Partition Table Header", 86 le64_to_cpu(gpt_h->signature), 87 GPT_HEADER_SIGNATURE); 88 return -1; 89 } 90 91 /* Check the GUID Partition Table CRC */ 92 memcpy(&crc32_backup, &gpt_h->header_crc32, sizeof(crc32_backup)); 93 memset(&gpt_h->header_crc32, 0, sizeof(gpt_h->header_crc32)); 94 95 calc_crc32 = efi_crc32((const unsigned char *)gpt_h, 96 le32_to_cpu(gpt_h->header_size)); 97 98 memcpy(&gpt_h->header_crc32, &crc32_backup, sizeof(crc32_backup)); 99 100 if (calc_crc32 != le32_to_cpu(crc32_backup)) { 101 printf("%s CRC is wrong: 0x%x != 0x%x\n", 102 "GUID Partition Table Header", 103 le32_to_cpu(crc32_backup), calc_crc32); 104 return -1; 105 } 106 107 /* 108 * Check that the my_lba entry points to the LBA that contains the GPT 109 */ 110 if (le64_to_cpu(gpt_h->my_lba) != lba) { 111 printf("GPT: my_lba incorrect: %llX != " LBAF "\n", 112 le64_to_cpu(gpt_h->my_lba), 113 lba); 114 return -1; 115 } 116 117 /* 118 * Check that the first_usable_lba and that the last_usable_lba are 119 * within the disk. 120 */ 121 if (le64_to_cpu(gpt_h->first_usable_lba) > lastlba) { 122 printf("GPT: first_usable_lba incorrect: %llX > " LBAF "\n", 123 le64_to_cpu(gpt_h->first_usable_lba), lastlba); 124 return -1; 125 } 126 if (le64_to_cpu(gpt_h->last_usable_lba) > lastlba) { 127 printf("GPT: last_usable_lba incorrect: %llX > " LBAF "\n", 128 le64_to_cpu(gpt_h->last_usable_lba), lastlba); 129 return -1; 130 } 131 132 debug("GPT: first_usable_lba: %llX last_usable_lba: %llX last lba: " 133 LBAF "\n", le64_to_cpu(gpt_h->first_usable_lba), 134 le64_to_cpu(gpt_h->last_usable_lba), lastlba); 135 136 return 0; 137 } 138 139 static int validate_gpt_entries(gpt_header *gpt_h, gpt_entry *gpt_e) 140 { 141 uint32_t calc_crc32; 142 143 /* Check the GUID Partition Table Entry Array CRC */ 144 calc_crc32 = efi_crc32((const unsigned char *)gpt_e, 145 le32_to_cpu(gpt_h->num_partition_entries) * 146 le32_to_cpu(gpt_h->sizeof_partition_entry)); 147 148 if (calc_crc32 != le32_to_cpu(gpt_h->partition_entry_array_crc32)) { 149 printf("%s: 0x%x != 0x%x\n", 150 "GUID Partition Table Entry Array CRC is wrong", 151 le32_to_cpu(gpt_h->partition_entry_array_crc32), 152 calc_crc32); 153 return -1; 154 } 155 156 return 0; 157 } 158 159 static void prepare_backup_gpt_header(gpt_header *gpt_h) 160 { 161 uint32_t calc_crc32; 162 uint64_t val; 163 164 /* recalculate the values for the Backup GPT Header */ 165 val = le64_to_cpu(gpt_h->my_lba); 166 gpt_h->my_lba = gpt_h->alternate_lba; 167 gpt_h->alternate_lba = cpu_to_le64(val); 168 gpt_h->partition_entry_lba = 169 cpu_to_le64(le64_to_cpu(gpt_h->last_usable_lba) + 1); 170 gpt_h->header_crc32 = 0; 171 172 calc_crc32 = efi_crc32((const unsigned char *)gpt_h, 173 le32_to_cpu(gpt_h->header_size)); 174 gpt_h->header_crc32 = cpu_to_le32(calc_crc32); 175 } 176 177 #if CONFIG_IS_ENABLED(EFI_PARTITION) 178 /* 179 * Public Functions (include/part.h) 180 */ 181 182 /* 183 * UUID is displayed as 32 hexadecimal digits, in 5 groups, 184 * separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters 185 */ 186 int get_disk_guid(struct blk_desc * dev_desc, char *guid) 187 { 188 ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); 189 gpt_entry *gpt_pte = NULL; 190 unsigned char *guid_bin; 191 192 /* This function validates AND fills in the GPT header and PTE */ 193 if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, 194 gpt_head, &gpt_pte) != 1) { 195 printf("%s: *** ERROR: Invalid GPT ***\n", __func__); 196 if (is_gpt_valid(dev_desc, dev_desc->lba - 1, 197 gpt_head, &gpt_pte) != 1) { 198 printf("%s: *** ERROR: Invalid Backup GPT ***\n", 199 __func__); 200 return -EINVAL; 201 } else { 202 printf("%s: *** Using Backup GPT ***\n", 203 __func__); 204 } 205 } 206 207 guid_bin = gpt_head->disk_guid.b; 208 uuid_bin_to_str(guid_bin, guid, UUID_STR_FORMAT_GUID); 209 210 return 0; 211 } 212 213 void part_print_efi(struct blk_desc *dev_desc) 214 { 215 ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz); 216 gpt_entry *gpt_pte = NULL; 217 int i = 0; 218 char uuid[UUID_STR_LEN + 1]; 219 unsigned char *uuid_bin; 220 221 /* This function validates AND fills in the GPT header and PTE */ 222 if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, 223 gpt_head, &gpt_pte) != 1) { 224 printf("%s: *** ERROR: Invalid GPT ***\n", __func__); 225 if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), 226 gpt_head, &gpt_pte) != 1) { 227 printf("%s: *** ERROR: Invalid Backup GPT ***\n", 228 __func__); 229 return; 230 } else { 231 printf("%s: *** Using Backup GPT ***\n", 232 __func__); 233 } 234 } 235 236 debug("%s: gpt-entry at %p\n", __func__, gpt_pte); 237 238 printf("Part\tStart LBA\tEnd LBA\t\tName\n"); 239 printf("\tAttributes\n"); 240 printf("\tType GUID\n"); 241 printf("\tPartition GUID\n"); 242 243 for (i = 0; i < le32_to_cpu(gpt_head->num_partition_entries); i++) { 244 /* Stop at the first non valid PTE */ 245 if (!is_pte_valid(&gpt_pte[i])) 246 break; 247 248 printf("%3d\t0x%08llx\t0x%08llx\t\"%s\"\n", (i + 1), 249 le64_to_cpu(gpt_pte[i].starting_lba), 250 le64_to_cpu(gpt_pte[i].ending_lba), 251 print_efiname(&gpt_pte[i])); 252 printf("\tattrs:\t0x%016llx\n", gpt_pte[i].attributes.raw); 253 uuid_bin = (unsigned char *)gpt_pte[i].partition_type_guid.b; 254 uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); 255 printf("\ttype:\t%s\n", uuid); 256 #ifdef CONFIG_PARTITION_TYPE_GUID 257 if (!uuid_guid_get_str(uuid_bin, uuid)) 258 printf("\ttype:\t%s\n", uuid); 259 #endif 260 uuid_bin = (unsigned char *)gpt_pte[i].unique_partition_guid.b; 261 uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); 262 printf("\tguid:\t%s\n", uuid); 263 } 264 265 /* Remember to free pte */ 266 free(gpt_pte); 267 return; 268 } 269 270 int part_get_info_efi(struct blk_desc *dev_desc, int part, 271 disk_partition_t *info) 272 { 273 static gpt_entry *gpt_pte = NULL; 274 static gpt_header *gpt_head = NULL; 275 276 if (!gpt_head) 277 gpt_head = memalign(ARCH_DMA_MINALIGN, dev_desc->blksz); 278 279 /* 280 * We suppose different dev have different size, eg. emmc vs sd 281 * free the pte first if exist and then will malloc and init a new one. 282 */ 283 if (gpt_head && (gpt_head->last_usable_lba + 0x22) != dev_desc->lba) { 284 if (gpt_pte) 285 free(gpt_pte); 286 gpt_pte = NULL; 287 } 288 289 /* "part" argument must be at least 1 */ 290 if (part < 1) { 291 printf("%s: Invalid Argument(s)\n", __func__); 292 return -1; 293 } 294 295 /* This function validates AND fills in the GPT header and PTE */ 296 if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, 297 gpt_head, &gpt_pte) != 1) { 298 printf("%s: *** ERROR: Invalid GPT ***\n", __func__); 299 if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), 300 gpt_head, &gpt_pte) != 1) { 301 printf("%s: *** ERROR: Invalid Backup GPT ***\n", 302 __func__); 303 return -1; 304 } else { 305 printf("%s: *** Using Backup GPT ***\n", 306 __func__); 307 } 308 } 309 310 if (part > le32_to_cpu(gpt_head->num_partition_entries) || 311 !is_pte_valid(&gpt_pte[part - 1])) { 312 debug("%s: *** ERROR: Invalid partition number %d ***\n", 313 __func__, part); 314 return -1; 315 } 316 317 /* The 'lbaint_t' casting may limit the maximum disk size to 2 TB */ 318 info->start = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].starting_lba); 319 /* The ending LBA is inclusive, to calculate size, add 1 to it */ 320 info->size = (lbaint_t)le64_to_cpu(gpt_pte[part - 1].ending_lba) + 1 321 - info->start; 322 info->blksz = dev_desc->blksz; 323 324 sprintf((char *)info->name, "%s", 325 print_efiname(&gpt_pte[part - 1])); 326 strcpy((char *)info->type, "U-Boot"); 327 info->bootable = is_bootable(&gpt_pte[part - 1]); 328 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 329 uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid, 330 UUID_STR_FORMAT_GUID); 331 #endif 332 #ifdef CONFIG_PARTITION_TYPE_GUID 333 uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b, 334 info->type_guid, UUID_STR_FORMAT_GUID); 335 #endif 336 337 debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s\n", __func__, 338 info->start, info->size, info->name); 339 340 return 0; 341 } 342 343 #ifdef CONFIG_RKIMG_BOOTLOADER 344 static void gpt_entry_modify(struct blk_desc *dev_desc, 345 gpt_entry *gpt_pte, 346 gpt_header *gpt_head) 347 { 348 int i; 349 uint32_t calc_crc32; 350 351 for (i = 0; i < gpt_head->num_partition_entries; i++) { 352 if (!is_pte_valid(&gpt_pte[i])) 353 break; 354 } 355 356 if (gpt_pte[i - 1].ending_lba <= (dev_desc->lba - 0x22)) 357 return; 358 359 gpt_pte[i - 1].ending_lba = dev_desc->lba - 0x22; 360 calc_crc32 = efi_crc32((const unsigned char *)gpt_pte, 361 le32_to_cpu(gpt_head->num_partition_entries) * 362 le32_to_cpu(gpt_head->sizeof_partition_entry)); 363 gpt_head->partition_entry_array_crc32 = calc_crc32; 364 } 365 366 static int part_efi_repair(struct blk_desc *dev_desc, gpt_entry *gpt_pte, 367 gpt_header *gpt_head, int head_gpt_valid, 368 int backup_gpt_valid) 369 { 370 uint32_t calc_crc32; 371 size_t count = 0, blk_cnt; 372 lbaint_t blk; 373 374 if (head_gpt_valid == 1 && backup_gpt_valid == 1) { 375 return 0; 376 } else if (head_gpt_valid == 0 && backup_gpt_valid == 0) { 377 return -1; 378 } else if (head_gpt_valid == 1 && backup_gpt_valid == 0) { 379 gpt_head->header_crc32 = 0; 380 gpt_head->my_lba = dev_desc->lba - 1; 381 gpt_head->alternate_lba = 1; 382 gpt_head->partition_entry_lba = dev_desc->lba - 0x21; 383 gpt_entry_modify(dev_desc, gpt_pte, gpt_head); 384 calc_crc32 = efi_crc32((const unsigned char *)gpt_head, 385 le32_to_cpu(gpt_head->header_size)); 386 gpt_head->header_crc32 = calc_crc32; 387 if (blk_dwrite(dev_desc, dev_desc->lba - 1, 1, gpt_head) != 1) { 388 printf("*** ERROR: Can't write GPT header ***\n"); 389 return -1; 390 } 391 count = le32_to_cpu(gpt_head->num_partition_entries) * 392 le32_to_cpu(gpt_head->sizeof_partition_entry); 393 blk = le64_to_cpu(gpt_head->partition_entry_lba); 394 blk_cnt = BLOCK_CNT(count, dev_desc); 395 if (blk_dwrite(dev_desc, blk, (lbaint_t)blk_cnt, gpt_pte) != 396 blk_cnt) { 397 printf("*** ERROR: Can't write entry partitions ***\n"); 398 return -1; 399 } 400 printf("Repair the backup gpt table OK!\n"); 401 } else if (head_gpt_valid == 0 && backup_gpt_valid == 1) { 402 gpt_head->header_crc32 = 0; 403 gpt_head->my_lba = 1; 404 gpt_head->alternate_lba = dev_desc->lba - 1; 405 gpt_head->partition_entry_lba = 0x22; 406 gpt_entry_modify(dev_desc, gpt_pte, gpt_head); 407 calc_crc32 = efi_crc32((const unsigned char *)gpt_head, 408 le32_to_cpu(gpt_head->header_size)); 409 gpt_head->header_crc32 = calc_crc32; 410 if (blk_dwrite(dev_desc, 1, 1, gpt_head) != 1) { 411 printf("*** ERROR: Can't write GPT header ***\n"); 412 return -1; 413 } 414 count = le32_to_cpu(gpt_head->num_partition_entries) * 415 le32_to_cpu(gpt_head->sizeof_partition_entry); 416 blk = le64_to_cpu(gpt_head->partition_entry_lba); 417 blk_cnt = BLOCK_CNT(count, dev_desc); 418 if (blk_dwrite(dev_desc, blk, (lbaint_t)blk_cnt, gpt_pte) != 419 blk_cnt) { 420 printf("*** ERROR: Can't write entry partitions ***\n"); 421 return -1; 422 } 423 printf("Repair the Primary gpt table OK!\n"); 424 } 425 426 return 0; 427 } 428 #endif 429 430 static int part_test_efi(struct blk_desc *dev_desc) 431 { 432 ALLOC_CACHE_ALIGN_BUFFER_PAD(legacy_mbr, legacymbr, 1, dev_desc->blksz); 433 int ret = 0; 434 435 /* Read legacy MBR from block 0 and validate it */ 436 if ((blk_dread(dev_desc, 0, 1, (ulong *)legacymbr) != 1) 437 || (is_pmbr_valid(legacymbr) != 1)) { 438 return -1; 439 } 440 #ifdef CONFIG_RKIMG_BOOTLOADER 441 gpt_entry *h_gpt_pte = NULL; 442 gpt_header *h_gpt_head = NULL; 443 gpt_entry *b_gpt_pte = NULL; 444 gpt_header *b_gpt_head = NULL; 445 int head_gpt_valid = 0; 446 int backup_gpt_valid = 0; 447 448 if (!h_gpt_head) 449 h_gpt_head = memalign(ARCH_DMA_MINALIGN, dev_desc->blksz); 450 if (!b_gpt_head) 451 b_gpt_head = memalign(ARCH_DMA_MINALIGN, dev_desc->blksz); 452 453 head_gpt_valid = is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, 454 h_gpt_head, &h_gpt_pte); 455 backup_gpt_valid = is_gpt_valid(dev_desc, (dev_desc->lba - 1), 456 b_gpt_head, &b_gpt_pte); 457 if (head_gpt_valid == 1 && backup_gpt_valid == 0) { 458 if (part_efi_repair(dev_desc, h_gpt_pte, h_gpt_head, 459 head_gpt_valid, backup_gpt_valid)) 460 printf("Backup GPT repair fail!\n"); 461 } else if (head_gpt_valid == 0 && backup_gpt_valid == 1) { 462 if (part_efi_repair(dev_desc, b_gpt_pte, b_gpt_head, 463 head_gpt_valid, backup_gpt_valid)) 464 printf("Primary GPT repair fail!\n"); 465 } else if (head_gpt_valid == 0 && backup_gpt_valid == 0) { 466 ret = -1; 467 } 468 469 free(h_gpt_pte); 470 h_gpt_pte = NULL; 471 free(h_gpt_head); 472 h_gpt_head = NULL; 473 free(b_gpt_pte); 474 b_gpt_pte = NULL; 475 free(b_gpt_head); 476 b_gpt_head = NULL; 477 #endif 478 return ret; 479 } 480 481 /** 482 * set_protective_mbr(): Set the EFI protective MBR 483 * @param dev_desc - block device descriptor 484 * 485 * @return - zero on success, otherwise error 486 */ 487 static int set_protective_mbr(struct blk_desc *dev_desc) 488 { 489 /* Setup the Protective MBR */ 490 ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, p_mbr, 1); 491 memset(p_mbr, 0, sizeof(*p_mbr)); 492 493 if (p_mbr == NULL) { 494 printf("%s: calloc failed!\n", __func__); 495 return -1; 496 } 497 498 /* Read MBR to backup boot code if it exists */ 499 if (blk_dread(dev_desc, 0, 1, p_mbr) != 1) { 500 pr_err("** Can't read from device %d **\n", dev_desc->devnum); 501 return -1; 502 } 503 504 /* Append signature */ 505 p_mbr->signature = MSDOS_MBR_SIGNATURE; 506 p_mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT; 507 p_mbr->partition_record[0].start_sect = 1; 508 p_mbr->partition_record[0].nr_sects = (u32) dev_desc->lba - 1; 509 510 /* Write MBR sector to the MMC device */ 511 if (blk_dwrite(dev_desc, 0, 1, p_mbr) != 1) { 512 printf("** Can't write to device %d **\n", 513 dev_desc->devnum); 514 return -1; 515 } 516 517 return 0; 518 } 519 520 int write_gpt_table(struct blk_desc *dev_desc, 521 gpt_header *gpt_h, gpt_entry *gpt_e) 522 { 523 const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries 524 * sizeof(gpt_entry)), dev_desc); 525 u32 calc_crc32; 526 527 debug("max lba: %x\n", (u32) dev_desc->lba); 528 /* Setup the Protective MBR */ 529 if (set_protective_mbr(dev_desc) < 0) 530 goto err; 531 532 /* Generate CRC for the Primary GPT Header */ 533 calc_crc32 = efi_crc32((const unsigned char *)gpt_e, 534 le32_to_cpu(gpt_h->num_partition_entries) * 535 le32_to_cpu(gpt_h->sizeof_partition_entry)); 536 gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32); 537 538 calc_crc32 = efi_crc32((const unsigned char *)gpt_h, 539 le32_to_cpu(gpt_h->header_size)); 540 gpt_h->header_crc32 = cpu_to_le32(calc_crc32); 541 542 /* Write the First GPT to the block right after the Legacy MBR */ 543 if (blk_dwrite(dev_desc, 1, 1, gpt_h) != 1) 544 goto err; 545 546 if (blk_dwrite(dev_desc, le64_to_cpu(gpt_h->partition_entry_lba), 547 pte_blk_cnt, gpt_e) != pte_blk_cnt) 548 goto err; 549 550 prepare_backup_gpt_header(gpt_h); 551 552 if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->last_usable_lba) 553 + 1, pte_blk_cnt, gpt_e) != pte_blk_cnt) 554 goto err; 555 556 if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->my_lba), 1, 557 gpt_h) != 1) 558 goto err; 559 560 debug("GPT successfully written to block device!\n"); 561 return 0; 562 563 err: 564 printf("** Can't write to device %d **\n", dev_desc->devnum); 565 return -1; 566 } 567 568 int gpt_fill_pte(struct blk_desc *dev_desc, 569 gpt_header *gpt_h, gpt_entry *gpt_e, 570 disk_partition_t *partitions, int parts) 571 { 572 lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba); 573 lbaint_t last_usable_lba = (lbaint_t) 574 le64_to_cpu(gpt_h->last_usable_lba); 575 int i, k; 576 size_t efiname_len, dosname_len; 577 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 578 char *str_uuid; 579 unsigned char *bin_uuid; 580 #endif 581 #ifdef CONFIG_PARTITION_TYPE_GUID 582 char *str_type_guid; 583 unsigned char *bin_type_guid; 584 #endif 585 size_t hdr_start = gpt_h->my_lba; 586 size_t hdr_end = hdr_start + 1; 587 588 size_t pte_start = gpt_h->partition_entry_lba; 589 size_t pte_end = pte_start + 590 gpt_h->num_partition_entries * gpt_h->sizeof_partition_entry / 591 dev_desc->blksz; 592 593 for (i = 0; i < parts; i++) { 594 /* partition starting lba */ 595 lbaint_t start = partitions[i].start; 596 lbaint_t size = partitions[i].size; 597 598 if (start) { 599 offset = start + size; 600 } else { 601 start = offset; 602 offset += size; 603 } 604 605 /* 606 * If our partition overlaps with either the GPT 607 * header, or the partition entry, reject it. 608 */ 609 if (((start < hdr_end && hdr_start < (start + size)) || 610 (start < pte_end && pte_start < (start + size)))) { 611 printf("Partition overlap\n"); 612 return -1; 613 } 614 615 gpt_e[i].starting_lba = cpu_to_le64(start); 616 617 if (offset > (last_usable_lba + 1)) { 618 printf("Partitions layout exceds disk size\n"); 619 return -1; 620 } 621 /* partition ending lba */ 622 if ((i == parts - 1) && (size == 0)) 623 /* extend the last partition to maximuim */ 624 gpt_e[i].ending_lba = gpt_h->last_usable_lba; 625 else 626 gpt_e[i].ending_lba = cpu_to_le64(offset - 1); 627 628 #ifdef CONFIG_PARTITION_TYPE_GUID 629 str_type_guid = partitions[i].type_guid; 630 bin_type_guid = gpt_e[i].partition_type_guid.b; 631 if (strlen(str_type_guid)) { 632 if (uuid_str_to_bin(str_type_guid, bin_type_guid, 633 UUID_STR_FORMAT_GUID)) { 634 printf("Partition no. %d: invalid type guid: %s\n", 635 i, str_type_guid); 636 return -1; 637 } 638 } else { 639 /* default partition type GUID */ 640 memcpy(bin_type_guid, 641 &PARTITION_BASIC_DATA_GUID, 16); 642 } 643 #else 644 /* partition type GUID */ 645 memcpy(gpt_e[i].partition_type_guid.b, 646 &PARTITION_BASIC_DATA_GUID, 16); 647 #endif 648 649 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 650 str_uuid = partitions[i].uuid; 651 bin_uuid = gpt_e[i].unique_partition_guid.b; 652 653 if (uuid_str_to_bin(str_uuid, bin_uuid, UUID_STR_FORMAT_GUID)) { 654 printf("Partition no. %d: invalid guid: %s\n", 655 i, str_uuid); 656 return -1; 657 } 658 #endif 659 660 /* partition attributes */ 661 memset(&gpt_e[i].attributes, 0, 662 sizeof(gpt_entry_attributes)); 663 664 if (partitions[i].bootable) 665 gpt_e[i].attributes.fields.legacy_bios_bootable = 1; 666 667 /* partition name */ 668 efiname_len = sizeof(gpt_e[i].partition_name) 669 / sizeof(efi_char16_t); 670 dosname_len = sizeof(partitions[i].name); 671 672 memset(gpt_e[i].partition_name, 0, 673 sizeof(gpt_e[i].partition_name)); 674 675 for (k = 0; k < min(dosname_len, efiname_len); k++) 676 gpt_e[i].partition_name[k] = 677 (efi_char16_t)(partitions[i].name[k]); 678 679 debug("%s: name: %s offset[%d]: 0x" LBAF 680 " size[%d]: 0x" LBAF "\n", 681 __func__, partitions[i].name, i, 682 offset, i, size); 683 } 684 685 return 0; 686 } 687 688 static uint32_t partition_entries_offset(struct blk_desc *dev_desc) 689 { 690 uint32_t offset_blks = 2; 691 uint32_t __maybe_unused offset_bytes; 692 int __maybe_unused config_offset; 693 694 #if defined(CONFIG_EFI_PARTITION_ENTRIES_OFF) 695 /* 696 * Some architectures require their SPL loader at a fixed 697 * address within the first 16KB of the disk. To avoid an 698 * overlap with the partition entries of the EFI partition 699 * table, the first safe offset (in bytes, from the start of 700 * the disk) for the entries can be set in 701 * CONFIG_EFI_PARTITION_ENTRIES_OFF. 702 */ 703 offset_bytes = 704 PAD_TO_BLOCKSIZE(CONFIG_EFI_PARTITION_ENTRIES_OFF, dev_desc); 705 offset_blks = offset_bytes / dev_desc->blksz; 706 #endif 707 708 #if defined(CONFIG_OF_CONTROL) 709 /* 710 * Allow the offset of the first partition entires (in bytes 711 * from the start of the device) to be specified as a property 712 * of the device tree '/config' node. 713 */ 714 config_offset = fdtdec_get_config_int(gd->fdt_blob, 715 "u-boot,efi-partition-entries-offset", 716 -EINVAL); 717 if (config_offset != -EINVAL) { 718 offset_bytes = PAD_TO_BLOCKSIZE(config_offset, dev_desc); 719 offset_blks = offset_bytes / dev_desc->blksz; 720 } 721 #endif 722 723 debug("efi: partition entries offset (in blocks): %d\n", offset_blks); 724 725 /* 726 * The earliest LBA this can be at is LBA#2 (i.e. right behind 727 * the (protective) MBR and the GPT header. 728 */ 729 if (offset_blks < 2) 730 offset_blks = 2; 731 732 return offset_blks; 733 } 734 735 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h, 736 char *str_guid, int parts_count) 737 { 738 gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE); 739 gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1); 740 gpt_h->header_size = cpu_to_le32(sizeof(gpt_header)); 741 gpt_h->my_lba = cpu_to_le64(1); 742 gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1); 743 gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34); 744 gpt_h->partition_entry_lba = 745 cpu_to_le64(partition_entries_offset(dev_desc)); 746 gpt_h->first_usable_lba = 747 cpu_to_le64(le64_to_cpu(gpt_h->partition_entry_lba) + 32); 748 gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS); 749 gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry)); 750 gpt_h->header_crc32 = 0; 751 gpt_h->partition_entry_array_crc32 = 0; 752 753 if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID)) 754 return -1; 755 756 return 0; 757 } 758 759 int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid, 760 disk_partition_t *partitions, int parts_count) 761 { 762 gpt_header *gpt_h; 763 gpt_entry *gpt_e; 764 int ret, size; 765 766 size = PAD_TO_BLOCKSIZE(sizeof(gpt_header), dev_desc); 767 gpt_h = malloc_cache_aligned(size); 768 if (gpt_h == NULL) { 769 printf("%s: calloc failed!\n", __func__); 770 return -1; 771 } 772 memset(gpt_h, 0, size); 773 774 size = PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS * sizeof(gpt_entry), 775 dev_desc); 776 gpt_e = malloc_cache_aligned(size); 777 if (gpt_e == NULL) { 778 printf("%s: calloc failed!\n", __func__); 779 free(gpt_h); 780 return -1; 781 } 782 memset(gpt_e, 0, size); 783 784 /* Generate Primary GPT header (LBA1) */ 785 ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count); 786 if (ret) 787 goto err; 788 789 /* Generate partition entries */ 790 ret = gpt_fill_pte(dev_desc, gpt_h, gpt_e, partitions, parts_count); 791 if (ret) 792 goto err; 793 794 /* Write GPT partition table */ 795 ret = write_gpt_table(dev_desc, gpt_h, gpt_e); 796 797 err: 798 free(gpt_e); 799 free(gpt_h); 800 return ret; 801 } 802 803 static void gpt_convert_efi_name_to_char(char *s, efi_char16_t *es, int n) 804 { 805 char *ess = (char *)es; 806 int i, j; 807 808 memset(s, '\0', n); 809 810 for (i = 0, j = 0; j < n; i += 2, j++) { 811 s[j] = ess[i]; 812 if (!ess[i]) 813 return; 814 } 815 } 816 817 int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head, 818 gpt_entry **gpt_pte) 819 { 820 /* 821 * This function validates AND 822 * fills in the GPT header and PTE 823 */ 824 if (is_gpt_valid(dev_desc, 825 GPT_PRIMARY_PARTITION_TABLE_LBA, 826 gpt_head, gpt_pte) != 1) { 827 printf("%s: *** ERROR: Invalid GPT ***\n", 828 __func__); 829 return -1; 830 } 831 if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), 832 gpt_head, gpt_pte) != 1) { 833 printf("%s: *** ERROR: Invalid Backup GPT ***\n", 834 __func__); 835 return -1; 836 } 837 838 return 0; 839 } 840 841 int gpt_verify_partitions(struct blk_desc *dev_desc, 842 disk_partition_t *partitions, int parts, 843 gpt_header *gpt_head, gpt_entry **gpt_pte) 844 { 845 char efi_str[PARTNAME_SZ + 1]; 846 u64 gpt_part_size; 847 gpt_entry *gpt_e; 848 int ret, i; 849 850 ret = gpt_verify_headers(dev_desc, gpt_head, gpt_pte); 851 if (ret) 852 return ret; 853 854 gpt_e = *gpt_pte; 855 856 for (i = 0; i < parts; i++) { 857 if (i == gpt_head->num_partition_entries) { 858 pr_err("More partitions than allowed!\n"); 859 return -1; 860 } 861 862 /* Check if GPT and ENV partition names match */ 863 gpt_convert_efi_name_to_char(efi_str, gpt_e[i].partition_name, 864 PARTNAME_SZ + 1); 865 866 debug("%s: part: %2d name - GPT: %16s, ENV: %16s ", 867 __func__, i, efi_str, partitions[i].name); 868 869 if (strncmp(efi_str, (char *)partitions[i].name, 870 sizeof(partitions->name))) { 871 pr_err("Partition name: %s does not match %s!\n", 872 efi_str, (char *)partitions[i].name); 873 return -1; 874 } 875 876 /* Check if GPT and ENV sizes match */ 877 gpt_part_size = le64_to_cpu(gpt_e[i].ending_lba) - 878 le64_to_cpu(gpt_e[i].starting_lba) + 1; 879 debug("size(LBA) - GPT: %8llu, ENV: %8llu ", 880 (unsigned long long)gpt_part_size, 881 (unsigned long long)partitions[i].size); 882 883 if (le64_to_cpu(gpt_part_size) != partitions[i].size) { 884 /* We do not check the extend partition size */ 885 if ((i == parts - 1) && (partitions[i].size == 0)) 886 continue; 887 888 pr_err("Partition %s size: %llu does not match %llu!\n", 889 efi_str, (unsigned long long)gpt_part_size, 890 (unsigned long long)partitions[i].size); 891 return -1; 892 } 893 894 /* 895 * Start address is optional - check only if provided 896 * in '$partition' variable 897 */ 898 if (!partitions[i].start) { 899 debug("\n"); 900 continue; 901 } 902 903 /* Check if GPT and ENV start LBAs match */ 904 debug("start LBA - GPT: %8llu, ENV: %8llu\n", 905 le64_to_cpu(gpt_e[i].starting_lba), 906 (unsigned long long)partitions[i].start); 907 908 if (le64_to_cpu(gpt_e[i].starting_lba) != partitions[i].start) { 909 pr_err("Partition %s start: %llu does not match %llu!\n", 910 efi_str, le64_to_cpu(gpt_e[i].starting_lba), 911 (unsigned long long)partitions[i].start); 912 return -1; 913 } 914 } 915 916 return 0; 917 } 918 919 int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf) 920 { 921 gpt_header *gpt_h; 922 gpt_entry *gpt_e; 923 924 /* determine start of GPT Header in the buffer */ 925 gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * 926 dev_desc->blksz); 927 928 if ((le64_to_cpu(gpt_h->alternate_lba) + 1) 929 != cpu_to_le64(dev_desc->lba)) { 930 printf("%s: failed checking '%s'\n", __func__, 931 "invalid GPT Disk Size"); 932 return -1; 933 } 934 935 if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA, 936 dev_desc->lba)) 937 return -1; 938 939 /* determine start of GPT Entries in the buffer */ 940 gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * 941 dev_desc->blksz); 942 if (validate_gpt_entries(gpt_h, gpt_e)) 943 return -1; 944 945 return 0; 946 } 947 948 int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf) 949 { 950 gpt_header *gpt_h; 951 gpt_entry *gpt_e; 952 int gpt_e_blk_cnt; 953 lbaint_t lba; 954 int cnt; 955 956 if (is_valid_gpt_buf(dev_desc, buf)) 957 return -1; 958 959 /* determine start of GPT Header in the buffer */ 960 gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA * 961 dev_desc->blksz); 962 963 /* determine start of GPT Entries in the buffer */ 964 gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) * 965 dev_desc->blksz); 966 gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) * 967 le32_to_cpu(gpt_h->sizeof_partition_entry)), 968 dev_desc); 969 970 /* write MBR */ 971 lba = 0; /* MBR is always at 0 */ 972 cnt = 1; /* MBR (1 block) */ 973 if (blk_dwrite(dev_desc, lba, cnt, buf) != cnt) { 974 printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", 975 __func__, "MBR", cnt, lba); 976 return 1; 977 } 978 979 /* write Primary GPT */ 980 lba = GPT_PRIMARY_PARTITION_TABLE_LBA; 981 cnt = 1; /* GPT Header (1 block) */ 982 if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) { 983 printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", 984 __func__, "Primary GPT Header", cnt, lba); 985 return 1; 986 } 987 988 lba = le64_to_cpu(gpt_h->partition_entry_lba); 989 cnt = gpt_e_blk_cnt; 990 if (blk_dwrite(dev_desc, lba, cnt, gpt_e) != cnt) { 991 printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", 992 __func__, "Primary GPT Entries", cnt, lba); 993 return 1; 994 } 995 996 prepare_backup_gpt_header(gpt_h); 997 998 /* write Backup GPT */ 999 lba = le64_to_cpu(gpt_h->partition_entry_lba); 1000 cnt = gpt_e_blk_cnt; 1001 if (blk_dwrite(dev_desc, lba, cnt, gpt_e) != cnt) { 1002 printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", 1003 __func__, "Backup GPT Entries", cnt, lba); 1004 return 1; 1005 } 1006 1007 lba = le64_to_cpu(gpt_h->my_lba); 1008 cnt = 1; /* GPT Header (1 block) */ 1009 if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) { 1010 printf("%s: failed writing '%s' (%d blks at 0x" LBAF ")\n", 1011 __func__, "Backup GPT Header", cnt, lba); 1012 return 1; 1013 } 1014 1015 return 0; 1016 } 1017 #endif 1018 1019 /* 1020 * Private functions 1021 */ 1022 /* 1023 * pmbr_part_valid(): Check for EFI partition signature 1024 * 1025 * Returns: 1 if EFI GPT partition type is found. 1026 */ 1027 static int pmbr_part_valid(struct partition *part) 1028 { 1029 if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT && 1030 get_unaligned_le32(&part->start_sect) == 1UL) { 1031 return 1; 1032 } 1033 1034 return 0; 1035 } 1036 1037 /* 1038 * is_pmbr_valid(): test Protective MBR for validity 1039 * 1040 * Returns: 1 if PMBR is valid, 0 otherwise. 1041 * Validity depends on two things: 1042 * 1) MSDOS signature is in the last two bytes of the MBR 1043 * 2) One partition of type 0xEE is found, checked by pmbr_part_valid() 1044 */ 1045 static int is_pmbr_valid(legacy_mbr * mbr) 1046 { 1047 int i = 0; 1048 1049 if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE) 1050 return 0; 1051 1052 #ifdef CONFIG_ARCH_ROCKCHIP 1053 /* 1054 * In sd-update card, we use RKPARM partition in bootloader to load 1055 * firmware, and use MS-DOS partition in recovery to update system. 1056 * Now, we want to use gpt in bootloader and abandon the RKPARM 1057 * partition. So in new sd-update card, we write the MS-DOS partition 1058 * table and gpt to sd card. Then we must return 1 directly when test 1059 * the mbr sector otherwise the gpt is unavailable. 1060 */ 1061 return 1; 1062 #endif 1063 for (i = 0; i < 4; i++) { 1064 if (pmbr_part_valid(&mbr->partition_record[i])) { 1065 return 1; 1066 } 1067 } 1068 return 0; 1069 } 1070 1071 /** 1072 * is_gpt_valid() - tests one GPT header and PTEs for validity 1073 * 1074 * lba is the logical block address of the GPT header to test 1075 * gpt is a GPT header ptr, filled on return. 1076 * ptes is a PTEs ptr, filled on return. 1077 * 1078 * Description: returns 1 if valid, 0 on error. 1079 * If valid, returns pointers to PTEs. 1080 */ 1081 static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, 1082 gpt_header *pgpt_head, gpt_entry **pgpt_pte) 1083 { 1084 /* Confirm valid arguments prior to allocation. */ 1085 if (!dev_desc || !pgpt_head) { 1086 printf("%s: Invalid Argument(s)\n", __func__); 1087 return 0; 1088 } 1089 1090 /* Re-use pte if it's not NULL */ 1091 if (*pgpt_pte) 1092 return 1; 1093 1094 ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, mbr, dev_desc->blksz); 1095 1096 /* Read MBR Header from device */ 1097 if (blk_dread(dev_desc, 0, 1, (ulong *)mbr) != 1) { 1098 printf("*** ERROR: Can't read MBR header ***\n"); 1099 return 0; 1100 } 1101 1102 /* Read GPT Header from device */ 1103 if (blk_dread(dev_desc, (lbaint_t)lba, 1, pgpt_head) != 1) { 1104 printf("*** ERROR: Can't read GPT header ***\n"); 1105 return 0; 1106 } 1107 1108 if (validate_gpt_header(pgpt_head, (lbaint_t)lba, dev_desc->lba)) 1109 return 0; 1110 1111 if (dev_desc->sig_type == SIG_TYPE_NONE) { 1112 efi_guid_t empty = {}; 1113 if (memcmp(&pgpt_head->disk_guid, &empty, sizeof(empty))) { 1114 dev_desc->sig_type = SIG_TYPE_GUID; 1115 memcpy(&dev_desc->guid_sig, &pgpt_head->disk_guid, 1116 sizeof(empty)); 1117 } else if (mbr->unique_mbr_signature != 0) { 1118 dev_desc->sig_type = SIG_TYPE_MBR; 1119 dev_desc->mbr_sig = mbr->unique_mbr_signature; 1120 } 1121 } 1122 1123 /* Read and allocate Partition Table Entries */ 1124 *pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head); 1125 if (*pgpt_pte == NULL) { 1126 printf("GPT: Failed to allocate memory for PTE\n"); 1127 return 0; 1128 } 1129 1130 if (validate_gpt_entries(pgpt_head, *pgpt_pte)) { 1131 free(*pgpt_pte); 1132 *pgpt_pte = NULL; 1133 return 0; 1134 } 1135 1136 /* We're done, all's well */ 1137 return 1; 1138 } 1139 1140 /** 1141 * alloc_read_gpt_entries(): reads partition entries from disk 1142 * @dev_desc 1143 * @gpt - GPT header 1144 * 1145 * Description: Returns ptes on success, NULL on error. 1146 * Allocates space for PTEs based on information found in @gpt. 1147 * Notes: remember to free pte when you're done! 1148 */ 1149 static gpt_entry *alloc_read_gpt_entries(struct blk_desc *dev_desc, 1150 gpt_header *pgpt_head) 1151 { 1152 size_t count = 0, blk_cnt; 1153 lbaint_t blk; 1154 gpt_entry *pte = NULL; 1155 1156 if (!dev_desc || !pgpt_head) { 1157 printf("%s: Invalid Argument(s)\n", __func__); 1158 return NULL; 1159 } 1160 1161 count = le32_to_cpu(pgpt_head->num_partition_entries) * 1162 le32_to_cpu(pgpt_head->sizeof_partition_entry); 1163 1164 debug("%s: count = %u * %u = %lu\n", __func__, 1165 (u32) le32_to_cpu(pgpt_head->num_partition_entries), 1166 (u32) le32_to_cpu(pgpt_head->sizeof_partition_entry), 1167 (ulong)count); 1168 1169 /* Allocate memory for PTE, remember to FREE */ 1170 if (count != 0) { 1171 pte = memalign(ARCH_DMA_MINALIGN, 1172 PAD_TO_BLOCKSIZE(count, dev_desc)); 1173 } 1174 1175 if (count == 0 || pte == NULL) { 1176 printf("%s: ERROR: Can't allocate %#lX bytes for GPT Entries\n", 1177 __func__, (ulong)count); 1178 return NULL; 1179 } 1180 1181 /* Read GPT Entries from device */ 1182 blk = le64_to_cpu(pgpt_head->partition_entry_lba); 1183 blk_cnt = BLOCK_CNT(count, dev_desc); 1184 if (blk_dread(dev_desc, blk, (lbaint_t)blk_cnt, pte) != blk_cnt) { 1185 printf("*** ERROR: Can't read GPT Entries ***\n"); 1186 free(pte); 1187 return NULL; 1188 } 1189 return pte; 1190 } 1191 1192 /** 1193 * is_pte_valid(): validates a single Partition Table Entry 1194 * @gpt_entry - Pointer to a single Partition Table Entry 1195 * 1196 * Description: returns 1 if valid, 0 on error. 1197 */ 1198 static int is_pte_valid(gpt_entry * pte) 1199 { 1200 efi_guid_t unused_guid; 1201 1202 if (!pte) { 1203 printf("%s: Invalid Argument(s)\n", __func__); 1204 return 0; 1205 } 1206 1207 /* Only one validation for now: 1208 * The GUID Partition Type != Unused Entry (ALL-ZERO) 1209 */ 1210 memset(unused_guid.b, 0, sizeof(unused_guid.b)); 1211 1212 if (memcmp(pte->partition_type_guid.b, unused_guid.b, 1213 sizeof(unused_guid.b)) == 0) { 1214 1215 debug("%s: Found an unused PTE GUID at 0x%08X\n", __func__, 1216 (unsigned int)(uintptr_t)pte); 1217 1218 return 0; 1219 } else { 1220 return 1; 1221 } 1222 } 1223 1224 /* 1225 * Add an 'a_' prefix so it comes before 'dos' in the linker list. We need to 1226 * check EFI first, since a DOS partition is often used as a 'protective MBR' 1227 * with EFI. 1228 */ 1229 U_BOOT_PART_TYPE(a_efi) = { 1230 .name = "EFI", 1231 .part_type = PART_TYPE_EFI, 1232 .max_entries = GPT_ENTRY_NUMBERS, 1233 .get_info = part_get_info_ptr(part_get_info_efi), 1234 .print = part_print_ptr(part_print_efi), 1235 .test = part_test_efi, 1236 }; 1237 #endif 1238