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