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 /* parition 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 *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 *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' && getc() == '\r') {
 331                                 opts.scrub = 1;
 332                         } else {
 333                                 puts("scrub aborted\n");
 334                                 return -1;
 335                         }
 336                 }
 337                 ret = nand_erase_opts(nand, &opts);
 338                 printf("%s\n", ret ? "ERROR" : "OK");
 339
 340                 return ret == 0 ? 0 : 1;
 341         }
 342
 343         if (strncmp(cmd, "dump", 4) == 0) {
 344                 if (argc < 3)
 345                         goto usage;
 346
 347                 s = strchr(cmd, '.');
 348                 off = (int)simple_strtoul(argv[2], NULL, 16);
 349
 350                 if (s != NULL && strcmp(s, ".oob") == 0)
 351                         ret = nand_dump(nand, off, 1);
 352                 else
 353                         ret = nand_dump(nand, off, 0);
 354
 355                 return ret == 0 ? 1 : 0;
 356
 357         }
 358
 359         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 360                 int read;
 361
 362                 if (argc < 4)
 363                         goto usage;
 364
 365                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 366
 367                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 368                 printf("\nNAND %s: ", read ? "read" : "write");
 369                 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
 370                         return 1;
 371
 372                 s = strchr(cmd, '.');
 373                 if (!s || !strcmp(s, ".jffs2") ||
 374                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
 375                         if (read)
 376                                 ret = nand_read_skip_bad(nand, off, &size,
 377                                                          (u_char *)addr);
 378                         else
 379                                 ret = nand_write_skip_bad(nand, off, &size,
 380                                                           (u_char *)addr);
 381                 } else if (!strcmp(s, ".oob")) {
 382                         /* out-of-band data */
 383                         mtd_oob_ops_t ops = {
 384                                 .oobbuf = (u8 *)addr,
 385                                 .ooblen = size,
 386                                 .mode = MTD_OOB_RAW
 387                         };
 388
 389                         if (read)
 390                                 ret = nand->read_oob(nand, off, &ops);
 391                         else
 392                                 ret = nand->write_oob(nand, off, &ops);
 393                 } else {
 394                         printf("Unknown nand command suffix '%s'.\n", s);
 395                         return 1;
 396                 }
 397
 398                 printf(" %zu bytes %s: %s\n", size,
 399                        read ? "read" : "written", ret ? "ERROR" : "OK");
 400
 401                 return ret == 0 ? 0 : 1;
 402         }
 403
 404         if (strcmp(cmd, "markbad") == 0) {
 405                 argc -= 2;
 406                 argv += 2;
 407
 408                 if (argc <= 0)
 409                         goto usage;
 410
 411                 while (argc > 0) {
 412                         addr = simple_strtoul(*argv, NULL, 16);
 413
 414                         if (nand->block_markbad(nand, addr)) {
 415                                 printf("block 0x%08lx NOT marked "
 416                                         "as bad! ERROR %d\n",
 417                                         addr, ret);
 418                                 ret = 1;
 419                         } else {
 420                                 printf("block 0x%08lx successfully "
 421                                         "marked as bad\n",
 422                                         addr);
 423                         }
 424                         --argc;
 425                         ++argv;
 426                 }
 427                 return ret;
 428         }
 429
 430         if (strcmp(cmd, "biterr") == 0) {
 431                 /* todo */
 432                 return 1;
 433         }
 434
 435 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 436         if (strcmp(cmd, "lock") == 0) {
 437                 int tight = 0;
 438                 int status = 0;
 439                 if (argc == 3) {
 440                         if (!strcmp("tight", argv[2]))
 441                                 tight = 1;
 442                         if (!strcmp("status", argv[2]))
 443                                 status = 1;
 444                 }
 445                 if (status) {
 446                         do_nand_status(nand);
 447                 } else {
 448                         if (!nand_lock(nand, tight)) {
 449                                 puts("NAND flash successfully locked\n");
 450                         } else {
 451                                 puts("Error locking NAND flash\n");
 452                                 return 1;
 453                         }
 454                 }
 455                 return 0;
 456         }
 457
 458         if (strcmp(cmd, "unlock") == 0) {
 459                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
 460                         return 1;
 461
 462                 if (!nand_unlock(nand, off, size)) {
 463                         puts("NAND flash successfully unlocked\n");
 464                 } else {
 465                         puts("Error unlocking NAND flash, "
 466                              "write and erase will probably fail\n");
 467                         return 1;
 468                 }
 469                 return 0;
 470         }
 471 #endif
 472
 473 usage:
 474         cmd_usage(cmdtp);
 475         return 1;
 476 }
 477
 478 U_BOOT_CMD(nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 479         "NAND sub-system",
 480         "info - show available NAND devices\n"
 481         "nand device [dev] - show or set current device\n"
 482         "nand read - addr off|partition size\n"
 483         "nand write - addr off|partition size\n"
 484         "    read/write 'size' bytes starting at offset 'off'\n"
 485         "    to/from memory address 'addr', skipping bad blocks.\n"
 486         "nand erase [clean] [off size] - erase 'size' bytes from\n"
 487         "    offset 'off' (entire device if not specified)\n"
 488         "nand bad - show bad blocks\n"
 489         "nand dump[.oob] off - dump page\n"
 490         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
 491         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 492         "nand biterr off - make a bit error at offset (UNSAFE)"
 493 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 494         "\n"
 495         "nand lock [tight] [status]\n"
 496         "    bring nand to lock state or display locked pages\n"
 497         "nand unlock [offset] [size] - unlock section"
 498 #endif
 499 );
 500
 501 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 502                            ulong offset, ulong addr, char *cmd)
 503 {
 504         int r;
 505         char *ep, *s;
 506         size_t cnt;
 507         image_header_t *hdr;
 508 #if defined(CONFIG_FIT)
 509         const void *fit_hdr = NULL;
 510 #endif
 511
 512         s = strchr(cmd, '.');
 513         if (s != NULL &&
 514             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 515                 printf("Unknown nand load suffix '%s'\n", s);
 516                 show_boot_progress(-53);
 517                 return 1;
 518         }
 519
 520         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 521
 522         cnt = nand->writesize;
 523         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 524         if (r) {
 525                 puts("** Read error\n");
 526                 show_boot_progress (-56);
 527                 return 1;
 528         }
 529         show_boot_progress (56);
 530
 531         switch (genimg_get_format ((void *)addr)) {
 532         case IMAGE_FORMAT_LEGACY:
 533                 hdr = (image_header_t *)addr;
 534
 535                 show_boot_progress (57);
 536                 image_print_contents (hdr);
 537
 538                 cnt = image_get_image_size (hdr);
 539                 break;
 540 #if defined(CONFIG_FIT)
 541         case IMAGE_FORMAT_FIT:
 542                 fit_hdr = (const void *)addr;
 543                 puts ("Fit image detected...\n");
 544
 545                 cnt = fit_get_size (fit_hdr);
 546                 break;
 547 #endif
 548         default:
 549                 show_boot_progress (-57);
 550                 puts ("** Unknown image type\n");
 551                 return 1;
 552         }
 553         show_boot_progress (57);
 554
 555         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 556         if (r) {
 557                 puts("** Read error\n");
 558                 show_boot_progress (-58);
 559                 return 1;
 560         }
 561         show_boot_progress (58);
 562
 563 #if defined(CONFIG_FIT)
 564         /* This cannot be done earlier, we need complete FIT image in RAM first */
 565         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 566                 if (!fit_check_format (fit_hdr)) {
 567                         show_boot_progress (-150);
 568                         puts ("** Bad FIT image format\n");
 569                         return 1;
 570                 }
 571                 show_boot_progress (151);
 572                 fit_print_contents (fit_hdr);
 573         }
 574 #endif
 575
 576         /* Loading ok, update default load address */
 577
 578         load_addr = addr;
 579
 580         /* Check if we should attempt an auto-start */
 581         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 582                 char *local_args[2];
 583                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 584
 585                 local_args[0] = cmd;
 586                 local_args[1] = NULL;
 587
 588                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 589
 590                 do_bootm(cmdtp, 0, 1, local_args);
 591                 return 1;
 592         }
 593         return 0;
 594 }
 595
 596 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 597 {
 598         char *boot_device = NULL;
 599         int idx;
 600         ulong addr, offset = 0;
 601 #if defined(CONFIG_CMD_MTDPARTS)
 602         struct mtd_device *dev;
 603         struct part_info *part;
 604         u8 pnum;
 605
 606         if (argc >= 2) {
 607                 char *p = (argc == 2) ? argv[1] : argv[2];
 608                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 609                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 610                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 611                                 puts("Not a NAND device\n");
 612                                 return 1;
 613                         }
 614                         if (argc > 3)
 615                                 goto usage;
 616                         if (argc == 3)
 617                                 addr = simple_strtoul(argv[1], NULL, 16);
 618                         else
 619                                 addr = CONFIG_SYS_LOAD_ADDR;
 620                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 621                                                part->offset, addr, argv[0]);
 622                 }
 623         }
 624 #endif
 625
 626         show_boot_progress(52);
 627         switch (argc) {
 628         case 1:
 629                 addr = CONFIG_SYS_LOAD_ADDR;
 630                 boot_device = getenv("bootdevice");
 631                 break;
 632         case 2:
 633                 addr = simple_strtoul(argv[1], NULL, 16);
 634                 boot_device = getenv("bootdevice");
 635                 break;
 636         case 3:
 637                 addr = simple_strtoul(argv[1], NULL, 16);
 638                 boot_device = argv[2];
 639                 break;
 640         case 4:
 641                 addr = simple_strtoul(argv[1], NULL, 16);
 642                 boot_device = argv[2];
 643                 offset = simple_strtoul(argv[3], NULL, 16);
 644                 break;
 645         default:
 646 #if defined(CONFIG_CMD_MTDPARTS)
 647 usage:
 648 #endif
 649                 cmd_usage(cmdtp);
 650                 show_boot_progress(-53);
 651                 return 1;
 652         }
 653
 654         show_boot_progress(53);
 655         if (!boot_device) {
 656                 puts("\n** No boot device **\n");
 657                 show_boot_progress(-54);
 658                 return 1;
 659         }
 660         show_boot_progress(54);
 661
 662         idx = simple_strtoul(boot_device, NULL, 16);
 663
 664         if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
 665                 printf("\n** Device %d not available\n", idx);
 666                 show_boot_progress(-55);
 667                 return 1;
 668         }
 669         show_boot_progress(55);
 670
 671         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 672 }
 673
 674 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 675         "boot from NAND device",
 676         "[partition] | [[[loadAddr] dev] offset]"
 677 );