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