1 /* 2 * (C) Copyright 2001 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <command.h> 10 #include <errno.h> 11 #include <ide.h> 12 #include <malloc.h> 13 #include <part.h> 14 #include <ubifs_uboot.h> 15 16 #undef PART_DEBUG 17 18 #ifdef PART_DEBUG 19 #define PRINTF(fmt,args...) printf (fmt ,##args) 20 #else 21 #define PRINTF(fmt,args...) 22 #endif 23 24 DECLARE_GLOBAL_DATA_PTR; 25 26 #ifdef HAVE_BLOCK_DEVICE 27 static struct part_driver *part_driver_lookup_type(int part_type) 28 { 29 struct part_driver *drv = 30 ll_entry_start(struct part_driver, part_driver); 31 const int n_ents = ll_entry_count(struct part_driver, part_driver); 32 struct part_driver *entry; 33 34 for (entry = drv; entry != drv + n_ents; entry++) { 35 if (part_type == entry->part_type) 36 return entry; 37 } 38 39 /* Not found */ 40 return NULL; 41 } 42 43 static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart) 44 { 45 struct blk_desc *dev_desc; 46 int ret; 47 48 dev_desc = blk_get_devnum_by_typename(ifname, dev); 49 if (!dev_desc) { 50 debug("%s: No device for iface '%s', dev %d\n", __func__, 51 ifname, dev); 52 return NULL; 53 } 54 ret = blk_dselect_hwpart(dev_desc, hwpart); 55 if (ret) { 56 debug("%s: Failed to select h/w partition: err-%d\n", __func__, 57 ret); 58 return NULL; 59 } 60 61 return dev_desc; 62 } 63 64 struct blk_desc *blk_get_dev(const char *ifname, int dev) 65 { 66 return get_dev_hwpart(ifname, dev, 0); 67 } 68 #else 69 struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart) 70 { 71 return NULL; 72 } 73 74 struct blk_desc *blk_get_dev(const char *ifname, int dev) 75 { 76 return NULL; 77 } 78 #endif 79 80 #ifdef HAVE_BLOCK_DEVICE 81 82 /* ------------------------------------------------------------------------- */ 83 /* 84 * reports device info to the user 85 */ 86 87 #ifdef CONFIG_LBA48 88 typedef uint64_t lba512_t; 89 #else 90 typedef lbaint_t lba512_t; 91 #endif 92 93 /* 94 * Overflowless variant of (block_count * mul_by / div_by) 95 * when div_by > mul_by 96 */ 97 static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by, lba512_t div_by) 98 { 99 lba512_t bc_quot, bc_rem; 100 101 /* x * m / d == x / d * m + (x % d) * m / d */ 102 bc_quot = block_count / div_by; 103 bc_rem = block_count - div_by * bc_quot; 104 return bc_quot * mul_by + (bc_rem * mul_by) / div_by; 105 } 106 107 void dev_print (struct blk_desc *dev_desc) 108 { 109 lba512_t lba512; /* number of blocks if 512bytes block size */ 110 111 if (dev_desc->type == DEV_TYPE_UNKNOWN) { 112 puts ("not available\n"); 113 return; 114 } 115 116 switch (dev_desc->if_type) { 117 case IF_TYPE_SCSI: 118 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n", 119 dev_desc->target,dev_desc->lun, 120 dev_desc->vendor, 121 dev_desc->product, 122 dev_desc->revision); 123 break; 124 case IF_TYPE_ATAPI: 125 case IF_TYPE_IDE: 126 case IF_TYPE_SATA: 127 printf ("Model: %s Firm: %s Ser#: %s\n", 128 dev_desc->vendor, 129 dev_desc->revision, 130 dev_desc->product); 131 break; 132 case IF_TYPE_SD: 133 case IF_TYPE_MMC: 134 case IF_TYPE_USB: 135 case IF_TYPE_NVME: 136 printf ("Vendor: %s Rev: %s Prod: %s\n", 137 dev_desc->vendor, 138 dev_desc->revision, 139 dev_desc->product); 140 break; 141 case IF_TYPE_DOC: 142 puts("device type DOC\n"); 143 return; 144 case IF_TYPE_UNKNOWN: 145 puts("device type unknown\n"); 146 return; 147 default: 148 printf("Unhandled device type: %i\n", dev_desc->if_type); 149 return; 150 } 151 puts (" Type: "); 152 if (dev_desc->removable) 153 puts ("Removable "); 154 switch (dev_desc->type & 0x1F) { 155 case DEV_TYPE_HARDDISK: 156 puts ("Hard Disk"); 157 break; 158 case DEV_TYPE_CDROM: 159 puts ("CD ROM"); 160 break; 161 case DEV_TYPE_OPDISK: 162 puts ("Optical Device"); 163 break; 164 case DEV_TYPE_TAPE: 165 puts ("Tape"); 166 break; 167 default: 168 printf ("# %02X #", dev_desc->type & 0x1F); 169 break; 170 } 171 puts ("\n"); 172 if (dev_desc->lba > 0L && dev_desc->blksz > 0L) { 173 ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem; 174 lbaint_t lba; 175 176 lba = dev_desc->lba; 177 178 lba512 = (lba * (dev_desc->blksz/512)); 179 /* round to 1 digit */ 180 /* 2048 = (1024 * 1024) / 512 MB */ 181 mb = lba512_muldiv(lba512, 10, 2048); 182 183 mb_quot = mb / 10; 184 mb_rem = mb - (10 * mb_quot); 185 186 gb = mb / 1024; 187 gb_quot = gb / 10; 188 gb_rem = gb - (10 * gb_quot); 189 #ifdef CONFIG_LBA48 190 if (dev_desc->lba48) 191 printf (" Supports 48-bit addressing\n"); 192 #endif 193 #if defined(CONFIG_SYS_64BIT_LBA) 194 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n", 195 mb_quot, mb_rem, 196 gb_quot, gb_rem, 197 lba, 198 dev_desc->blksz); 199 #else 200 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n", 201 mb_quot, mb_rem, 202 gb_quot, gb_rem, 203 (ulong)lba, 204 dev_desc->blksz); 205 #endif 206 } else { 207 puts (" Capacity: not available\n"); 208 } 209 } 210 #endif 211 212 #ifdef HAVE_BLOCK_DEVICE 213 214 void part_init(struct blk_desc *dev_desc) 215 { 216 struct part_driver *drv = 217 ll_entry_start(struct part_driver, part_driver); 218 const int n_ents = ll_entry_count(struct part_driver, part_driver); 219 struct part_driver *entry; 220 221 blkcache_invalidate(dev_desc->if_type, dev_desc->devnum); 222 223 dev_desc->part_type = PART_TYPE_UNKNOWN; 224 for (entry = drv; entry != drv + n_ents; entry++) { 225 int ret; 226 227 ret = entry->test(dev_desc); 228 debug("%s: try '%s': ret=%d\n", __func__, entry->name, ret); 229 if (!ret) { 230 dev_desc->part_type = entry->part_type; 231 break; 232 } 233 } 234 } 235 236 static void print_part_header(const char *type, struct blk_desc *dev_desc) 237 { 238 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \ 239 CONFIG_IS_ENABLED(DOS_PARTITION) || \ 240 CONFIG_IS_ENABLED(ISO_PARTITION) || \ 241 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \ 242 CONFIG_IS_ENABLED(EFI_PARTITION) 243 puts ("\nPartition Map for "); 244 switch (dev_desc->if_type) { 245 case IF_TYPE_IDE: 246 puts ("IDE"); 247 break; 248 case IF_TYPE_SATA: 249 puts ("SATA"); 250 break; 251 case IF_TYPE_SCSI: 252 puts ("SCSI"); 253 break; 254 case IF_TYPE_ATAPI: 255 puts ("ATAPI"); 256 break; 257 case IF_TYPE_USB: 258 puts ("USB"); 259 break; 260 case IF_TYPE_DOC: 261 puts ("DOC"); 262 break; 263 case IF_TYPE_MMC: 264 puts ("MMC"); 265 break; 266 case IF_TYPE_HOST: 267 puts ("HOST"); 268 break; 269 case IF_TYPE_NVME: 270 puts ("NVMe"); 271 break; 272 default: 273 puts ("UNKNOWN"); 274 break; 275 } 276 printf (" device %d -- Partition Type: %s\n\n", 277 dev_desc->devnum, type); 278 #endif /* any CONFIG_..._PARTITION */ 279 } 280 281 void part_print(struct blk_desc *dev_desc) 282 { 283 struct part_driver *drv; 284 285 drv = part_driver_lookup_type(dev_desc->part_type); 286 if (!drv) { 287 printf("## Unknown partition table type %x\n", 288 dev_desc->part_type); 289 return; 290 } 291 292 PRINTF("## Testing for valid %s partition ##\n", drv->name); 293 print_part_header(drv->name, dev_desc); 294 if (drv->print) 295 drv->print(dev_desc); 296 } 297 298 #endif /* HAVE_BLOCK_DEVICE */ 299 300 int part_get_info(struct blk_desc *dev_desc, int part, 301 disk_partition_t *info) 302 { 303 #ifdef HAVE_BLOCK_DEVICE 304 struct part_driver *drv; 305 306 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 307 /* The common case is no UUID support */ 308 info->uuid[0] = 0; 309 #endif 310 #ifdef CONFIG_PARTITION_TYPE_GUID 311 info->type_guid[0] = 0; 312 #endif 313 314 drv = part_driver_lookup_type(dev_desc->part_type); 315 if (!drv) { 316 debug("## Unknown partition table type %x\n", 317 dev_desc->part_type); 318 return -EPROTONOSUPPORT; 319 } 320 if (!drv->get_info) { 321 PRINTF("## Driver %s does not have the get_info() method\n", 322 drv->name); 323 return -ENOSYS; 324 } 325 if (drv->get_info(dev_desc, part, info) == 0) { 326 PRINTF("## Valid %s partition found ##\n", drv->name); 327 return 0; 328 } 329 #endif /* HAVE_BLOCK_DEVICE */ 330 331 return -1; 332 } 333 334 int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str, 335 struct blk_desc **dev_desc) 336 { 337 char *ep; 338 char *dup_str = NULL; 339 const char *dev_str, *hwpart_str; 340 int dev, hwpart; 341 342 hwpart_str = strchr(dev_hwpart_str, '.'); 343 if (hwpart_str) { 344 dup_str = strdup(dev_hwpart_str); 345 dup_str[hwpart_str - dev_hwpart_str] = 0; 346 dev_str = dup_str; 347 hwpart_str++; 348 } else { 349 dev_str = dev_hwpart_str; 350 hwpart = 0; 351 } 352 353 dev = simple_strtoul(dev_str, &ep, 16); 354 if (*ep) { 355 printf("** Bad device specification %s %s **\n", 356 ifname, dev_str); 357 dev = -EINVAL; 358 goto cleanup; 359 } 360 361 if (hwpart_str) { 362 hwpart = simple_strtoul(hwpart_str, &ep, 16); 363 if (*ep) { 364 printf("** Bad HW partition specification %s %s **\n", 365 ifname, hwpart_str); 366 dev = -EINVAL; 367 goto cleanup; 368 } 369 } 370 371 *dev_desc = get_dev_hwpart(ifname, dev, hwpart); 372 if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) { 373 printf("** Bad device %s %s **\n", ifname, dev_hwpart_str); 374 dev = -ENOENT; 375 goto cleanup; 376 } 377 378 #ifdef HAVE_BLOCK_DEVICE 379 /* 380 * Updates the partition table for the specified hw partition. 381 * Does not need to be done for hwpart 0 since it is default and 382 * already loaded. 383 */ 384 if(hwpart != 0) 385 part_init(*dev_desc); 386 #endif 387 388 cleanup: 389 free(dup_str); 390 return dev; 391 } 392 393 #define PART_UNSPECIFIED -2 394 #define PART_AUTO -1 395 int blk_get_device_part_str(const char *ifname, const char *dev_part_str, 396 struct blk_desc **dev_desc, 397 disk_partition_t *info, int allow_whole_dev) 398 { 399 int ret = -1; 400 const char *part_str; 401 char *dup_str = NULL; 402 const char *dev_str; 403 int dev; 404 char *ep; 405 int p; 406 int part; 407 disk_partition_t tmpinfo; 408 409 #ifdef CONFIG_SANDBOX 410 /* 411 * Special-case a pseudo block device "hostfs", to allow access to the 412 * host's own filesystem. 413 */ 414 if (0 == strcmp(ifname, "hostfs")) { 415 *dev_desc = NULL; 416 info->start = 0; 417 info->size = 0; 418 info->blksz = 0; 419 info->bootable = 0; 420 strcpy((char *)info->type, BOOT_PART_TYPE); 421 strcpy((char *)info->name, "Sandbox host"); 422 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 423 info->uuid[0] = 0; 424 #endif 425 #ifdef CONFIG_PARTITION_TYPE_GUID 426 info->type_guid[0] = 0; 427 #endif 428 429 return 0; 430 } 431 #endif 432 433 #ifdef CONFIG_CMD_UBIFS 434 /* 435 * Special-case ubi, ubi goes through a mtd, rathen then through 436 * a regular block device. 437 */ 438 if (0 == strcmp(ifname, "ubi")) { 439 if (!ubifs_is_mounted()) { 440 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n"); 441 return -1; 442 } 443 444 *dev_desc = NULL; 445 memset(info, 0, sizeof(*info)); 446 strcpy((char *)info->type, BOOT_PART_TYPE); 447 strcpy((char *)info->name, "UBI"); 448 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 449 info->uuid[0] = 0; 450 #endif 451 return 0; 452 } 453 #endif 454 455 /* If no dev_part_str, use bootdevice environment variable */ 456 if (!dev_part_str || !strlen(dev_part_str) || 457 !strcmp(dev_part_str, "-")) 458 dev_part_str = env_get("bootdevice"); 459 460 /* If still no dev_part_str, it's an error */ 461 if (!dev_part_str) { 462 printf("** No device specified **\n"); 463 goto cleanup; 464 } 465 466 /* Separate device and partition ID specification */ 467 part_str = strchr(dev_part_str, ':'); 468 if (part_str) { 469 dup_str = strdup(dev_part_str); 470 dup_str[part_str - dev_part_str] = 0; 471 dev_str = dup_str; 472 part_str++; 473 } else { 474 dev_str = dev_part_str; 475 } 476 477 /* Look up the device */ 478 dev = blk_get_device_by_str(ifname, dev_str, dev_desc); 479 if (dev < 0) 480 goto cleanup; 481 482 /* Convert partition ID string to number */ 483 if (!part_str || !*part_str) { 484 part = PART_UNSPECIFIED; 485 } else if (!strcmp(part_str, "auto")) { 486 part = PART_AUTO; 487 } else { 488 /* Something specified -> use exactly that */ 489 part = (int)simple_strtoul(part_str, &ep, 16); 490 /* 491 * Less than whole string converted, 492 * or request for whole device, but caller requires partition. 493 */ 494 if (*ep || (part == 0 && !allow_whole_dev)) { 495 printf("** Bad partition specification %s %s **\n", 496 ifname, dev_part_str); 497 goto cleanup; 498 } 499 } 500 501 /* 502 * No partition table on device, 503 * or user requested partition 0 (entire device). 504 */ 505 if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) || 506 (part == 0)) { 507 if (!(*dev_desc)->lba) { 508 printf("** Bad device size - %s %s **\n", ifname, 509 dev_str); 510 goto cleanup; 511 } 512 513 /* 514 * If user specified a partition ID other than 0, 515 * or the calling command only accepts partitions, 516 * it's an error. 517 */ 518 if ((part > 0) || (!allow_whole_dev)) { 519 printf("** No partition table - %s %s **\n", ifname, 520 dev_str); 521 goto cleanup; 522 } 523 524 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz); 525 526 info->start = 0; 527 info->size = (*dev_desc)->lba; 528 info->blksz = (*dev_desc)->blksz; 529 info->bootable = 0; 530 strcpy((char *)info->type, BOOT_PART_TYPE); 531 strcpy((char *)info->name, "Whole Disk"); 532 #if CONFIG_IS_ENABLED(PARTITION_UUIDS) 533 info->uuid[0] = 0; 534 #endif 535 #ifdef CONFIG_PARTITION_TYPE_GUID 536 info->type_guid[0] = 0; 537 #endif 538 539 ret = 0; 540 goto cleanup; 541 } 542 543 /* 544 * Now there's known to be a partition table, 545 * not specifying a partition means to pick partition 1. 546 */ 547 if (part == PART_UNSPECIFIED) 548 part = 1; 549 550 /* 551 * If user didn't specify a partition number, or did specify something 552 * other than "auto", use that partition number directly. 553 */ 554 if (part != PART_AUTO) { 555 ret = part_get_info(*dev_desc, part, info); 556 if (ret) { 557 printf("** Invalid partition %d **\n", part); 558 goto cleanup; 559 } 560 } else { 561 /* 562 * Find the first bootable partition. 563 * If none are bootable, fall back to the first valid partition. 564 */ 565 part = 0; 566 for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) { 567 ret = part_get_info(*dev_desc, p, info); 568 if (ret) 569 continue; 570 571 /* 572 * First valid partition, or new better partition? 573 * If so, save partition ID. 574 */ 575 if (!part || info->bootable) 576 part = p; 577 578 /* Best possible partition? Stop searching. */ 579 if (info->bootable) 580 break; 581 582 /* 583 * We now need to search further for best possible. 584 * If we what we just queried was the best so far, 585 * save the info since we over-write it next loop. 586 */ 587 if (part == p) 588 tmpinfo = *info; 589 } 590 /* If we found any acceptable partition */ 591 if (part) { 592 /* 593 * If we searched all possible partition IDs, 594 * return the first valid partition we found. 595 */ 596 if (p == MAX_SEARCH_PARTITIONS + 1) 597 *info = tmpinfo; 598 } else { 599 printf("** No valid partitions found **\n"); 600 ret = -1; 601 goto cleanup; 602 } 603 } 604 if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) { 605 printf("** Invalid partition type \"%.32s\"" 606 " (expect \"" BOOT_PART_TYPE "\")\n", 607 info->type); 608 ret = -1; 609 goto cleanup; 610 } 611 612 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz); 613 614 ret = part; 615 goto cleanup; 616 617 cleanup: 618 free(dup_str); 619 return ret; 620 } 621 622 int part_get_info_by_name(struct blk_desc *dev_desc, const char *name, 623 disk_partition_t *info) 624 { 625 struct part_driver *first_drv = 626 ll_entry_start(struct part_driver, part_driver); 627 const int n_drvs = ll_entry_count(struct part_driver, part_driver); 628 struct part_driver *part_drv; 629 630 for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) { 631 int ret; 632 int i; 633 for (i = 1; i < part_drv->max_entries; i++) { 634 ret = part_drv->get_info(dev_desc, i, info); 635 if (ret != 0) { 636 /* no more entries in table */ 637 break; 638 } 639 if (strcmp(name, (const char *)info->name) == 0) { 640 /* matched */ 641 return i; 642 } 643 } 644 } 645 return -1; 646 } 647 648 void part_set_generic_name(const struct blk_desc *dev_desc, 649 int part_num, char *name) 650 { 651 char *devtype; 652 653 switch (dev_desc->if_type) { 654 case IF_TYPE_IDE: 655 case IF_TYPE_SATA: 656 case IF_TYPE_ATAPI: 657 devtype = "hd"; 658 break; 659 case IF_TYPE_SCSI: 660 devtype = "sd"; 661 break; 662 case IF_TYPE_USB: 663 devtype = "usbd"; 664 break; 665 case IF_TYPE_DOC: 666 devtype = "docd"; 667 break; 668 case IF_TYPE_MMC: 669 case IF_TYPE_SD: 670 devtype = "mmcsd"; 671 break; 672 default: 673 devtype = "xx"; 674 break; 675 } 676 677 sprintf(name, "%s%c%d", devtype, 'a' + dev_desc->devnum, part_num); 678 } 679