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