git.sur5r.net Git - u-boot/blob - common/cmd_nand.c

   1 /*
   2  * Driver for NAND support, Rick Bronson
   3  * borrowed heavily from:
   4  * (c) 1999 Machine Vision Holdings, Inc.
   5  * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
   6  *
   7  * Ported 'dynenv' to 'nand env.oob' command
   8  * (C) 2010 Nanometrics, Inc.
   9  * 'dynenv' -- Dynamic environment offset in NAND OOB
  10  * (C) Copyright 2006-2007 OpenMoko, Inc.
  11  * Added 16-bit nand support
  12  * (C) 2004 Texas Instruments
  13  */
  14
  15 #include <common.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <command.h>
  18 #include <watchdog.h>
  19 #include <malloc.h>
  20 #include <asm/byteorder.h>
  21 #include <jffs2/jffs2.h>
  22 #include <nand.h>
  23
  24 #if defined(CONFIG_CMD_MTDPARTS)
  25
  26 /* partition handling routines */
  27 int mtdparts_init(void);
  28 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
  29 int find_dev_and_part(const char *id, struct mtd_device **dev,
  30                       u8 *part_num, struct part_info **part);
  31 #endif
  32
  33 static int nand_dump(nand_info_t *nand, ulong off, int only_oob)
  34 {
  35         int i;
  36         u_char *datbuf, *oobbuf, *p;
  37
  38         datbuf = malloc(nand->writesize + nand->oobsize);
  39         oobbuf = malloc(nand->oobsize);
  40         if (!datbuf || !oobbuf) {
  41                 puts("No memory for page buffer\n");
  42                 return 1;
  43         }
  44         off &= ~(nand->writesize - 1);
  45         loff_t addr = (loff_t) off;
  46         struct mtd_oob_ops ops;
  47         memset(&ops, 0, sizeof(ops));
  48         ops.datbuf = datbuf;
  49         ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
  50         ops.len = nand->writesize;
  51         ops.ooblen = nand->oobsize;
  52         ops.mode = MTD_OOB_RAW;
  53         i = nand->read_oob(nand, addr, &ops);
  54         if (i < 0) {
  55                 printf("Error (%d) reading page %08lx\n", i, off);
  56                 free(datbuf);
  57                 free(oobbuf);
  58                 return 1;
  59         }
  60         printf("Page %08lx dump:\n", off);
  61         i = nand->writesize >> 4;
  62         p = datbuf;
  63
  64         while (i--) {
  65                 if (!only_oob)
  66                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
  67                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
  68                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
  69                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
  70                                p[15]);
  71                 p += 16;
  72         }
  73         puts("OOB:\n");
  74         i = nand->oobsize >> 3;
  75         while (i--) {
  76                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
  77                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
  78                 p += 8;
  79         }
  80         free(datbuf);
  81         free(oobbuf);
  82
  83         return 0;
  84 }
  85
  86 /* ------------------------------------------------------------------------- */
  87
  88 static inline int str2long(char *p, ulong *num)
  89 {
  90         char *endptr;
  91
  92         *num = simple_strtoul(p, &endptr, 16);
  93         return (*p != '\0' && *endptr == '\0') ? 1 : 0;
  94 }
  95
  96 static int
  97 arg_off_size(int argc, char * const argv[], nand_info_t *nand, ulong *off, size_t *size)
  98 {
  99         int idx = nand_curr_device;
 100 #if defined(CONFIG_CMD_MTDPARTS)
 101         struct mtd_device *dev;
 102         struct part_info *part;
 103         u8 pnum;
 104
 105         if (argc >= 1 && !(str2long(argv[0], off))) {
 106                 if ((mtdparts_init() == 0) &&
 107                     (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
 108                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 109                                 puts("not a NAND device\n");
 110                                 return -1;
 111                         }
 112                         *off = part->offset;
 113                         if (argc >= 2) {
 114                                 if (!(str2long(argv[1], (ulong *)size))) {
 115                                         printf("'%s' is not a number\n", argv[1]);
 116                                         return -1;
 117                                 }
 118                                 if (*size > part->size)
 119                                         *size = part->size;
 120                         } else {
 121                                 *size = part->size;
 122                         }
 123                         idx = dev->id->num;
 124                         *nand = nand_info[idx];
 125                         goto out;
 126                 }
 127         }
 128 #endif
 129
 130         if (argc >= 1) {
 131                 if (!(str2long(argv[0], off))) {
 132                         printf("'%s' is not a number\n", argv[0]);
 133                         return -1;
 134                 }
 135         } else {
 136                 *off = 0;
 137         }
 138
 139         if (argc >= 2) {
 140                 if (!(str2long(argv[1], (ulong *)size))) {
 141                         printf("'%s' is not a number\n", argv[1]);
 142                         return -1;
 143                 }
 144         } else {
 145                 *size = nand->size - *off;
 146         }
 147
 148 #if defined(CONFIG_CMD_MTDPARTS)
 149 out:
 150 #endif
 151         printf("device %d ", idx);
 152         if (*size == nand->size)
 153                 puts("whole chip\n");
 154         else
 155                 printf("offset 0x%lx, size 0x%zx\n", *off, *size);
 156         return 0;
 157 }
 158
 159 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 160 static void print_status(ulong start, ulong end, ulong erasesize, int status)
 161 {
 162         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
 163                 start,
 164                 end - 1,
 165                 (end - start) / erasesize,
 166                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
 167                 ((status & NAND_LOCK_STATUS_LOCK) ?  "LOCK " : ""),
 168                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
 169 }
 170
 171 static void do_nand_status(nand_info_t *nand)
 172 {
 173         ulong block_start = 0;
 174         ulong off;
 175         int last_status = -1;
 176
 177         struct nand_chip *nand_chip = nand->priv;
 178         /* check the WP bit */
 179         nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
 180         printf("device is %swrite protected\n",
 181                 (nand_chip->read_byte(nand) & 0x80 ?
 182                 "NOT " : ""));
 183
 184         for (off = 0; off < nand->size; off += nand->erasesize) {
 185                 int s = nand_get_lock_status(nand, off);
 186
 187                 /* print message only if status has changed */
 188                 if (s != last_status && off != 0) {
 189                         print_status(block_start, off, nand->erasesize,
 190                                         last_status);
 191                         block_start = off;
 192                 }
 193                 last_status = s;
 194         }
 195         /* Print the last block info */
 196         print_status(block_start, off, nand->erasesize, last_status);
 197 }
 198 #endif
 199
 200 #ifdef CONFIG_ENV_OFFSET_OOB
 201 unsigned long nand_env_oob_offset;
 202
 203 int do_nand_env_oob(cmd_tbl_t *cmdtp, nand_info_t *nand,
 204                     int argc, char * const argv[])
 205 {
 206         int ret;
 207         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
 208
 209         char *cmd = argv[1];
 210
 211         if (!strcmp(cmd, "get")) {
 212                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 213                 if (ret)
 214                         return 1;
 215
 216                 printf("0x%08lx\n", nand_env_oob_offset);
 217         } else if (!strcmp(cmd, "set")) {
 218                 ulong addr;
 219                 size_t dummy_size;
 220                 struct mtd_oob_ops ops;
 221
 222                 if (argc < 3)
 223                         goto usage;
 224
 225                 if (arg_off_size(argc - 2, argv + 2, nand, &addr,
 226                                  &dummy_size) < 0) {
 227                         printf("Offset or partition name expected\n");
 228                         return 1;
 229                 }
 230
 231                 if (nand->oobavail < ENV_OFFSET_SIZE) {
 232                         printf("Insufficient available OOB bytes:\n"
 233                                "%d OOB bytes available but %d required for "
 234                                "env.oob support\n",
 235                                nand->oobavail, ENV_OFFSET_SIZE);
 236                         return 1;
 237                 }
 238
 239                 if ((addr & (nand->erasesize - 1)) != 0) {
 240                         printf("Environment offset must be block-aligned\n");
 241                         return 1;
 242                 }
 243
 244                 ops.datbuf = NULL;
 245                 ops.mode = MTD_OOB_AUTO;
 246                 ops.ooboffs = 0;
 247                 ops.ooblen = ENV_OFFSET_SIZE;
 248                 ops.oobbuf = (void *) oob_buf;
 249
 250                 oob_buf[0] = ENV_OOB_MARKER;
 251                 oob_buf[1] = addr / nand->erasesize;
 252
 253                 ret = nand->write_oob(nand, ENV_OFFSET_SIZE, &ops);
 254                 if (ret) {
 255                         printf("Error writing OOB block 0\n");
 256                         return ret;
 257                 }
 258
 259                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 260                 if (ret) {
 261                         printf("Error reading env offset in OOB\n");
 262                         return ret;
 263                 }
 264
 265                 if (addr != nand_env_oob_offset) {
 266                         printf("Verification of env offset in OOB failed: "
 267                                "0x%08lx expected but got 0x%08lx\n",
 268                                addr, nand_env_oob_offset);
 269                         return 1;
 270                 }
 271         } else {
 272                 goto usage;
 273         }
 274
 275         return ret;
 276
 277 usage:
 278         return cmd_usage(cmdtp);
 279 }
 280
 281 #endif
 282
 283 static void nand_print_info(int idx)
 284 {
 285         nand_info_t *nand = &nand_info[idx];
 286         struct nand_chip *chip = nand->priv;
 287         printf("Device %d: ", idx);
 288         if (chip->numchips > 1)
 289                 printf("%dx ", chip->numchips);
 290         printf("%s, sector size %u KiB\n",
 291                nand->name, nand->erasesize >> 10);
 292 }
 293
 294 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 295 {
 296         int i, dev, ret = 0;
 297         ulong addr, off;
 298         size_t size;
 299         char *cmd, *s;
 300         nand_info_t *nand;
 301 #ifdef CONFIG_SYS_NAND_QUIET
 302         int quiet = CONFIG_SYS_NAND_QUIET;
 303 #else
 304         int quiet = 0;
 305 #endif
 306         const char *quiet_str = getenv("quiet");
 307
 308         /* at least two arguments please */
 309         if (argc < 2)
 310                 goto usage;
 311
 312         if (quiet_str)
 313                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 314
 315         cmd = argv[1];
 316
 317         if (strcmp(cmd, "info") == 0) {
 318
 319                 putc('\n');
 320                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
 321                         if (nand_info[i].name)
 322                                 nand_print_info(i);
 323                 }
 324                 return 0;
 325         }
 326
 327         if (strcmp(cmd, "device") == 0) {
 328
 329                 if (argc < 3) {
 330                         putc('\n');
 331                         if ((nand_curr_device < 0) ||
 332                             (nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE))
 333                                 puts("no devices available\n");
 334                         else
 335                                 nand_print_info(nand_curr_device);
 336                         return 0;
 337                 }
 338                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 339                 if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[dev].name) {
 340                         puts("No such device\n");
 341                         return 1;
 342                 }
 343                 printf("Device %d: %s", dev, nand_info[dev].name);
 344                 puts("... is now current device\n");
 345                 nand_curr_device = dev;
 346
 347 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 348                 /*
 349                  * Select the chip in the board/cpu specific driver
 350                  */
 351                 board_nand_select_device(nand_info[dev].priv, dev);
 352 #endif
 353
 354                 return 0;
 355         }
 356
 357         if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
 358             strncmp(cmd, "dump", 4) != 0 &&
 359             strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
 360             strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
 361             strcmp(cmd, "biterr") != 0 &&
 362             strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0
 363 #ifdef CONFIG_ENV_OFFSET_OOB
 364             && strcmp(cmd, "env.oob") != 0
 365 #endif
 366             )
 367                 goto usage;
 368
 369 #ifdef CONFIG_ENV_OFFSET_OOB
 370         /* this command operates only on the first nand device */
 371         if (strcmp(cmd, "env.oob") == 0) {
 372                 return do_nand_env_oob(cmdtp, &nand_info[0],
 373                                        argc - 1, argv + 1);
 374         }
 375 #endif
 376
 377         /* the following commands operate on the current device */
 378         if (nand_curr_device < 0 || nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
 379             !nand_info[nand_curr_device].name) {
 380                 puts("\nno devices available\n");
 381                 return 1;
 382         }
 383         nand = &nand_info[nand_curr_device];
 384
 385         if (strcmp(cmd, "bad") == 0) {
 386                 printf("\nDevice %d bad blocks:\n", nand_curr_device);
 387                 for (off = 0; off < nand->size; off += nand->erasesize)
 388                         if (nand_block_isbad(nand, off))
 389                                 printf("  %08lx\n", off);
 390                 return 0;
 391         }
 392
 393         /*
 394          * Syntax is:
 395          *   0    1     2       3    4
 396          *   nand erase [clean] [off size]
 397          */
 398         if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
 399                 nand_erase_options_t opts;
 400                 /* "clean" at index 2 means request to write cleanmarker */
 401                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 402                 int o = clean ? 3 : 2;
 403                 int scrub = !strcmp(cmd, "scrub");
 404
 405                 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
 406                 /* skip first two or three arguments, look for offset and size */
 407                 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
 408                         return 1;
 409
 410                 memset(&opts, 0, sizeof(opts));
 411                 opts.offset = off;
 412                 opts.length = size;
 413                 opts.jffs2  = clean;
 414                 opts.quiet  = quiet;
 415
 416                 if (scrub) {
 417                         puts("Warning: "
 418                              "scrub option will erase all factory set "
 419                              "bad blocks!\n"
 420                              "         "
 421                              "There is no reliable way to recover them.\n"
 422                              "         "
 423                              "Use this command only for testing purposes "
 424                              "if you\n"
 425                              "         "
 426                              "are sure of what you are doing!\n"
 427                              "\nReally scrub this NAND flash? <y/N>\n");
 428
 429                         if (getc() == 'y') {
 430                                 puts("y");
 431                                 if (getc() == '\r')
 432                                         opts.scrub = 1;
 433                                 else {
 434                                         puts("scrub aborted\n");
 435                                         return -1;
 436                                 }
 437                         } else {
 438                                 puts("scrub aborted\n");
 439                                 return -1;
 440                         }
 441                 }
 442                 ret = nand_erase_opts(nand, &opts);
 443                 printf("%s\n", ret ? "ERROR" : "OK");
 444
 445                 return ret == 0 ? 0 : 1;
 446         }
 447
 448         if (strncmp(cmd, "dump", 4) == 0) {
 449                 if (argc < 3)
 450                         goto usage;
 451
 452                 s = strchr(cmd, '.');
 453                 off = (int)simple_strtoul(argv[2], NULL, 16);
 454
 455                 if (s != NULL && strcmp(s, ".oob") == 0)
 456                         ret = nand_dump(nand, off, 1);
 457                 else
 458                         ret = nand_dump(nand, off, 0);
 459
 460                 return ret == 0 ? 1 : 0;
 461
 462         }
 463
 464         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 465                 int read;
 466
 467                 if (argc < 4)
 468                         goto usage;
 469
 470                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 471
 472                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 473                 printf("\nNAND %s: ", read ? "read" : "write");
 474                 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
 475                         return 1;
 476
 477                 s = strchr(cmd, '.');
 478                 if (!s || !strcmp(s, ".jffs2") ||
 479                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
 480                         if (read)
 481                                 ret = nand_read_skip_bad(nand, off, &size,
 482                                                          (u_char *)addr);
 483                         else
 484                                 ret = nand_write_skip_bad(nand, off, &size,
 485                                                           (u_char *)addr);
 486                 } else if (!strcmp(s, ".oob")) {
 487                         /* out-of-band data */
 488                         mtd_oob_ops_t ops = {
 489                                 .oobbuf = (u8 *)addr,
 490                                 .ooblen = size,
 491                                 .mode = MTD_OOB_RAW
 492                         };
 493
 494                         if (read)
 495                                 ret = nand->read_oob(nand, off, &ops);
 496                         else
 497                                 ret = nand->write_oob(nand, off, &ops);
 498                 } else {
 499                         printf("Unknown nand command suffix '%s'.\n", s);
 500                         return 1;
 501                 }
 502
 503                 printf(" %zu bytes %s: %s\n", size,
 504                        read ? "read" : "written", ret ? "ERROR" : "OK");
 505
 506                 return ret == 0 ? 0 : 1;
 507         }
 508
 509         if (strcmp(cmd, "markbad") == 0) {
 510                 argc -= 2;
 511                 argv += 2;
 512
 513                 if (argc <= 0)
 514                         goto usage;
 515
 516                 while (argc > 0) {
 517                         addr = simple_strtoul(*argv, NULL, 16);
 518
 519                         if (nand->block_markbad(nand, addr)) {
 520                                 printf("block 0x%08lx NOT marked "
 521                                         "as bad! ERROR %d\n",
 522                                         addr, ret);
 523                                 ret = 1;
 524                         } else {
 525                                 printf("block 0x%08lx successfully "
 526                                         "marked as bad\n",
 527                                         addr);
 528                         }
 529                         --argc;
 530                         ++argv;
 531                 }
 532                 return ret;
 533         }
 534
 535         if (strcmp(cmd, "biterr") == 0) {
 536                 /* todo */
 537                 return 1;
 538         }
 539
 540 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 541         if (strcmp(cmd, "lock") == 0) {
 542                 int tight = 0;
 543                 int status = 0;
 544                 if (argc == 3) {
 545                         if (!strcmp("tight", argv[2]))
 546                                 tight = 1;
 547                         if (!strcmp("status", argv[2]))
 548                                 status = 1;
 549                 }
 550                 if (status) {
 551                         do_nand_status(nand);
 552                 } else {
 553                         if (!nand_lock(nand, tight)) {
 554                                 puts("NAND flash successfully locked\n");
 555                         } else {
 556                                 puts("Error locking NAND flash\n");
 557                                 return 1;
 558                         }
 559                 }
 560                 return 0;
 561         }
 562
 563         if (strcmp(cmd, "unlock") == 0) {
 564                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
 565                         return 1;
 566
 567                 if (!nand_unlock(nand, off, size)) {
 568                         puts("NAND flash successfully unlocked\n");
 569                 } else {
 570                         puts("Error unlocking NAND flash, "
 571                              "write and erase will probably fail\n");
 572                         return 1;
 573                 }
 574                 return 0;
 575         }
 576 #endif
 577
 578 usage:
 579         return cmd_usage(cmdtp);
 580 }
 581
 582 U_BOOT_CMD(
 583         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 584         "NAND sub-system",
 585         "info - show available NAND devices\n"
 586         "nand device [dev] - show or set current device\n"
 587         "nand read - addr off|partition size\n"
 588         "nand write - addr off|partition size\n"
 589         "    read/write 'size' bytes starting at offset 'off'\n"
 590         "    to/from memory address 'addr', skipping bad blocks.\n"
 591         "nand erase [clean] [off size] - erase 'size' bytes from\n"
 592         "    offset 'off' (entire device if not specified)\n"
 593         "nand bad - show bad blocks\n"
 594         "nand dump[.oob] off - dump page\n"
 595         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
 596         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 597         "nand biterr off - make a bit error at offset (UNSAFE)"
 598 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 599         "\n"
 600         "nand lock [tight] [status]\n"
 601         "    bring nand to lock state or display locked pages\n"
 602         "nand unlock [offset] [size] - unlock section"
 603 #endif
 604 #ifdef CONFIG_ENV_OFFSET_OOB
 605         "\n"
 606         "nand env.oob - environment offset in OOB of block 0 of"
 607         "    first device.\n"
 608         "nand env.oob set off|partition - set enviromnent offset\n"
 609         "nand env.oob get - get environment offset"
 610 #endif
 611 );
 612
 613 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 614                            ulong offset, ulong addr, char *cmd)
 615 {
 616         int r;
 617         char *ep, *s;
 618         size_t cnt;
 619         image_header_t *hdr;
 620 #if defined(CONFIG_FIT)
 621         const void *fit_hdr = NULL;
 622 #endif
 623
 624         s = strchr(cmd, '.');
 625         if (s != NULL &&
 626             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 627                 printf("Unknown nand load suffix '%s'\n", s);
 628                 show_boot_progress(-53);
 629                 return 1;
 630         }
 631
 632         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 633
 634         cnt = nand->writesize;
 635         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 636         if (r) {
 637                 puts("** Read error\n");
 638                 show_boot_progress (-56);
 639                 return 1;
 640         }
 641         show_boot_progress (56);
 642
 643         switch (genimg_get_format ((void *)addr)) {
 644         case IMAGE_FORMAT_LEGACY:
 645                 hdr = (image_header_t *)addr;
 646
 647                 show_boot_progress (57);
 648                 image_print_contents (hdr);
 649
 650                 cnt = image_get_image_size (hdr);
 651                 break;
 652 #if defined(CONFIG_FIT)
 653         case IMAGE_FORMAT_FIT:
 654                 fit_hdr = (const void *)addr;
 655                 puts ("Fit image detected...\n");
 656
 657                 cnt = fit_get_size (fit_hdr);
 658                 break;
 659 #endif
 660         default:
 661                 show_boot_progress (-57);
 662                 puts ("** Unknown image type\n");
 663                 return 1;
 664         }
 665         show_boot_progress (57);
 666
 667         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 668         if (r) {
 669                 puts("** Read error\n");
 670                 show_boot_progress (-58);
 671                 return 1;
 672         }
 673         show_boot_progress (58);
 674
 675 #if defined(CONFIG_FIT)
 676         /* This cannot be done earlier, we need complete FIT image in RAM first */
 677         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 678                 if (!fit_check_format (fit_hdr)) {
 679                         show_boot_progress (-150);
 680                         puts ("** Bad FIT image format\n");
 681                         return 1;
 682                 }
 683                 show_boot_progress (151);
 684                 fit_print_contents (fit_hdr);
 685         }
 686 #endif
 687
 688         /* Loading ok, update default load address */
 689
 690         load_addr = addr;
 691
 692         /* Check if we should attempt an auto-start */
 693         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 694                 char *local_args[2];
 695                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 696
 697                 local_args[0] = cmd;
 698                 local_args[1] = NULL;
 699
 700                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 701
 702                 do_bootm(cmdtp, 0, 1, local_args);
 703                 return 1;
 704         }
 705         return 0;
 706 }
 707
 708 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 709 {
 710         char *boot_device = NULL;
 711         int idx;
 712         ulong addr, offset = 0;
 713 #if defined(CONFIG_CMD_MTDPARTS)
 714         struct mtd_device *dev;
 715         struct part_info *part;
 716         u8 pnum;
 717
 718         if (argc >= 2) {
 719                 char *p = (argc == 2) ? argv[1] : argv[2];
 720                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 721                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 722                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 723                                 puts("Not a NAND device\n");
 724                                 return 1;
 725                         }
 726                         if (argc > 3)
 727                                 goto usage;
 728                         if (argc == 3)
 729                                 addr = simple_strtoul(argv[1], NULL, 16);
 730                         else
 731                                 addr = CONFIG_SYS_LOAD_ADDR;
 732                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 733                                                part->offset, addr, argv[0]);
 734                 }
 735         }
 736 #endif
 737
 738         show_boot_progress(52);
 739         switch (argc) {
 740         case 1:
 741                 addr = CONFIG_SYS_LOAD_ADDR;
 742                 boot_device = getenv("bootdevice");
 743                 break;
 744         case 2:
 745                 addr = simple_strtoul(argv[1], NULL, 16);
 746                 boot_device = getenv("bootdevice");
 747                 break;
 748         case 3:
 749                 addr = simple_strtoul(argv[1], NULL, 16);
 750                 boot_device = argv[2];
 751                 break;
 752         case 4:
 753                 addr = simple_strtoul(argv[1], NULL, 16);
 754                 boot_device = argv[2];
 755                 offset = simple_strtoul(argv[3], NULL, 16);
 756                 break;
 757         default:
 758 #if defined(CONFIG_CMD_MTDPARTS)
 759 usage:
 760 #endif
 761                 show_boot_progress(-53);
 762                 return cmd_usage(cmdtp);
 763         }
 764
 765         show_boot_progress(53);
 766         if (!boot_device) {
 767                 puts("\n** No boot device **\n");
 768                 show_boot_progress(-54);
 769                 return 1;
 770         }
 771         show_boot_progress(54);
 772
 773         idx = simple_strtoul(boot_device, NULL, 16);
 774
 775         if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
 776                 printf("\n** Device %d not available\n", idx);
 777                 show_boot_progress(-55);
 778                 return 1;
 779         }
 780         show_boot_progress(55);
 781
 782         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 783 }
 784
 785 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 786         "boot from NAND device",
 787         "[partition] | [[[loadAddr] dev] offset]"
 788 );