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