disk/part.c

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