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  * Copyright 2010 Freescale Semiconductor
  15  * The portions of this file whose copyright is held by Freescale and which
  16  * are not considered a derived work of GPL v2-only code may be distributed
  17  * and/or modified under the terms of the GNU General Public License as
  18  * published by the Free Software Foundation; either version 2 of the
  19  * License, or (at your option) any later version.
  20  */
  21
  22 #include <common.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <command.h>
  25 #include <watchdog.h>
  26 #include <malloc.h>
  27 #include <asm/byteorder.h>
  28 #include <jffs2/jffs2.h>
  29 #include <nand.h>
  30
  31 #if defined(CONFIG_CMD_MTDPARTS)
  32
  33 /* partition handling routines */
  34 int mtdparts_init(void);
  35 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
  36 int find_dev_and_part(const char *id, struct mtd_device **dev,
  37                       u8 *part_num, struct part_info **part);
  38 #endif
  39
  40 static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat)
  41 {
  42         int i;
  43         u_char *datbuf, *oobbuf, *p;
  44         static loff_t last;
  45
  46         if (repeat)
  47                 off = last + nand->writesize;
  48
  49         last = off;
  50
  51         datbuf = malloc(nand->writesize + nand->oobsize);
  52         oobbuf = malloc(nand->oobsize);
  53         if (!datbuf || !oobbuf) {
  54                 puts("No memory for page buffer\n");
  55                 return 1;
  56         }
  57         off &= ~(nand->writesize - 1);
  58         loff_t addr = (loff_t) off;
  59         struct mtd_oob_ops ops;
  60         memset(&ops, 0, sizeof(ops));
  61         ops.datbuf = datbuf;
  62         ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
  63         ops.len = nand->writesize;
  64         ops.ooblen = nand->oobsize;
  65         ops.mode = MTD_OOB_RAW;
  66         i = nand->read_oob(nand, addr, &ops);
  67         if (i < 0) {
  68                 printf("Error (%d) reading page %08lx\n", i, off);
  69                 free(datbuf);
  70                 free(oobbuf);
  71                 return 1;
  72         }
  73         printf("Page %08lx dump:\n", off);
  74         i = nand->writesize >> 4;
  75         p = datbuf;
  76
  77         while (i--) {
  78                 if (!only_oob)
  79                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
  80                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
  81                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
  82                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
  83                                p[15]);
  84                 p += 16;
  85         }
  86         puts("OOB:\n");
  87         i = nand->oobsize >> 3;
  88         while (i--) {
  89                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
  90                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
  91                 p += 8;
  92         }
  93         free(datbuf);
  94         free(oobbuf);
  95
  96         return 0;
  97 }
  98
  99 /* ------------------------------------------------------------------------- */
 100
 101 static int set_dev(int dev)
 102 {
 103         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
 104             !nand_info[dev].name) {
 105                 puts("No such device\n");
 106                 return -1;
 107         }
 108
 109         if (nand_curr_device == dev)
 110                 return 0;
 111
 112         printf("Device %d: %s", dev, nand_info[dev].name);
 113         puts("... is now current device\n");
 114         nand_curr_device = dev;
 115
 116 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 117         board_nand_select_device(nand_info[dev].priv, dev);
 118 #endif
 119
 120         return 0;
 121 }
 122
 123 static inline int str2off(const char *p, loff_t *num)
 124 {
 125         char *endptr;
 126
 127         *num = simple_strtoull(p, &endptr, 16);
 128         return *p != '\0' && *endptr == '\0';
 129 }
 130
 131 static inline int str2long(const char *p, ulong *num)
 132 {
 133         char *endptr;
 134
 135         *num = simple_strtoul(p, &endptr, 16);
 136         return *p != '\0' && *endptr == '\0';
 137 }
 138
 139 static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size)
 140 {
 141 #ifdef CONFIG_CMD_MTDPARTS
 142         struct mtd_device *dev;
 143         struct part_info *part;
 144         u8 pnum;
 145         int ret;
 146
 147         ret = mtdparts_init();
 148         if (ret)
 149                 return ret;
 150
 151         ret = find_dev_and_part(partname, &dev, &pnum, &part);
 152         if (ret)
 153                 return ret;
 154
 155         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 156                 puts("not a NAND device\n");
 157                 return -1;
 158         }
 159
 160         *off = part->offset;
 161         *size = part->size;
 162         *idx = dev->id->num;
 163
 164         ret = set_dev(*idx);
 165         if (ret)
 166                 return ret;
 167
 168         return 0;
 169 #else
 170         puts("offset is not a number\n");
 171         return -1;
 172 #endif
 173 }
 174
 175 static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *maxsize)
 176 {
 177         if (!str2off(arg, off))
 178                 return get_part(arg, idx, off, maxsize);
 179
 180         if (*off >= nand_info[*idx].size) {
 181                 puts("Offset exceeds device limit\n");
 182                 return -1;
 183         }
 184
 185         *maxsize = nand_info[*idx].size - *off;
 186         return 0;
 187 }
 188
 189 static int arg_off_size(int argc, char *const argv[], int *idx,
 190                         loff_t *off, loff_t *size)
 191 {
 192         int ret;
 193         loff_t maxsize;
 194
 195         if (argc == 0) {
 196                 *off = 0;
 197                 *size = nand_info[*idx].size;
 198                 goto print;
 199         }
 200
 201         ret = arg_off(argv[0], idx, off, &maxsize);
 202         if (ret)
 203                 return ret;
 204
 205         if (argc == 1) {
 206                 *size = maxsize;
 207                 goto print;
 208         }
 209
 210         if (!str2off(argv[1], size)) {
 211                 printf("'%s' is not a number\n", argv[1]);
 212                 return -1;
 213         }
 214
 215         if (*size > maxsize) {
 216                 puts("Size exceeds partition or device limit\n");
 217                 return -1;
 218         }
 219
 220 print:
 221         printf("device %d ", *idx);
 222         if (*size == nand_info[*idx].size)
 223                 puts("whole chip\n");
 224         else
 225                 printf("offset 0x%llx, size 0x%llx\n",
 226                        (unsigned long long)*off, (unsigned long long)*size);
 227         return 0;
 228 }
 229
 230 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 231 static void print_status(ulong start, ulong end, ulong erasesize, int status)
 232 {
 233         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
 234                 start,
 235                 end - 1,
 236                 (end - start) / erasesize,
 237                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
 238                 ((status & NAND_LOCK_STATUS_LOCK) ?  "LOCK " : ""),
 239                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
 240 }
 241
 242 static void do_nand_status(nand_info_t *nand)
 243 {
 244         ulong block_start = 0;
 245         ulong off;
 246         int last_status = -1;
 247
 248         struct nand_chip *nand_chip = nand->priv;
 249         /* check the WP bit */
 250         nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
 251         printf("device is %swrite protected\n",
 252                 (nand_chip->read_byte(nand) & 0x80 ?
 253                 "NOT " : ""));
 254
 255         for (off = 0; off < nand->size; off += nand->erasesize) {
 256                 int s = nand_get_lock_status(nand, off);
 257
 258                 /* print message only if status has changed */
 259                 if (s != last_status && off != 0) {
 260                         print_status(block_start, off, nand->erasesize,
 261                                         last_status);
 262                         block_start = off;
 263                 }
 264                 last_status = s;
 265         }
 266         /* Print the last block info */
 267         print_status(block_start, off, nand->erasesize, last_status);
 268 }
 269 #endif
 270
 271 #ifdef CONFIG_ENV_OFFSET_OOB
 272 unsigned long nand_env_oob_offset;
 273
 274 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
 275 {
 276         int ret;
 277         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
 278         nand_info_t *nand = &nand_info[0];
 279         char *cmd = argv[1];
 280
 281         if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !nand->name) {
 282                 puts("no devices available\n");
 283                 return 1;
 284         }
 285
 286         set_dev(0);
 287
 288         if (!strcmp(cmd, "get")) {
 289                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 290                 if (ret)
 291                         return 1;
 292
 293                 printf("0x%08lx\n", nand_env_oob_offset);
 294         } else if (!strcmp(cmd, "set")) {
 295                 loff_t addr;
 296                 loff_t maxsize;
 297                 struct mtd_oob_ops ops;
 298                 int idx = 0;
 299
 300                 if (argc < 3)
 301                         goto usage;
 302
 303                 if (arg_off(argv[2], &idx, &addr, &maxsize)) {
 304                         puts("Offset or partition name expected\n");
 305                         return 1;
 306                 }
 307
 308                 if (idx != 0) {
 309                         puts("Partition not on first NAND device\n");
 310                         return 1;
 311                 }
 312
 313                 if (nand->oobavail < ENV_OFFSET_SIZE) {
 314                         printf("Insufficient available OOB bytes:\n"
 315                                "%d OOB bytes available but %d required for "
 316                                "env.oob support\n",
 317                                nand->oobavail, ENV_OFFSET_SIZE);
 318                         return 1;
 319                 }
 320
 321                 if ((addr & (nand->erasesize - 1)) != 0) {
 322                         printf("Environment offset must be block-aligned\n");
 323                         return 1;
 324                 }
 325
 326                 ops.datbuf = NULL;
 327                 ops.mode = MTD_OOB_AUTO;
 328                 ops.ooboffs = 0;
 329                 ops.ooblen = ENV_OFFSET_SIZE;
 330                 ops.oobbuf = (void *) oob_buf;
 331
 332                 oob_buf[0] = ENV_OOB_MARKER;
 333                 oob_buf[1] = addr / nand->erasesize;
 334
 335                 ret = nand->write_oob(nand, ENV_OFFSET_SIZE, &ops);
 336                 if (ret) {
 337                         printf("Error writing OOB block 0\n");
 338                         return ret;
 339                 }
 340
 341                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 342                 if (ret) {
 343                         printf("Error reading env offset in OOB\n");
 344                         return ret;
 345                 }
 346
 347                 if (addr != nand_env_oob_offset) {
 348                         printf("Verification of env offset in OOB failed: "
 349                                "0x%08llx expected but got 0x%08lx\n",
 350                                (unsigned long long)addr, nand_env_oob_offset);
 351                         return 1;
 352                 }
 353         } else {
 354                 goto usage;
 355         }
 356
 357         return ret;
 358
 359 usage:
 360         return cmd_usage(cmdtp);
 361 }
 362
 363 #endif
 364
 365 static void nand_print_info(int idx)
 366 {
 367         nand_info_t *nand = &nand_info[idx];
 368         struct nand_chip *chip = nand->priv;
 369         printf("Device %d: ", idx);
 370         if (chip->numchips > 1)
 371                 printf("%dx ", chip->numchips);
 372         printf("%s, sector size %u KiB\n",
 373                nand->name, nand->erasesize >> 10);
 374 }
 375
 376 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 377 {
 378         int i, ret = 0;
 379         ulong addr;
 380         loff_t off, size;
 381         char *cmd, *s;
 382         nand_info_t *nand;
 383 #ifdef CONFIG_SYS_NAND_QUIET
 384         int quiet = CONFIG_SYS_NAND_QUIET;
 385 #else
 386         int quiet = 0;
 387 #endif
 388         const char *quiet_str = getenv("quiet");
 389         int dev = nand_curr_device;
 390         int repeat = flag & CMD_FLAG_REPEAT;
 391
 392         /* at least two arguments please */
 393         if (argc < 2)
 394                 goto usage;
 395
 396         if (quiet_str)
 397                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 398
 399         cmd = argv[1];
 400
 401         /* Only "dump" is repeatable. */
 402         if (repeat && strcmp(cmd, "dump"))
 403                 return 0;
 404
 405         if (strcmp(cmd, "info") == 0) {
 406
 407                 putc('\n');
 408                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
 409                         if (nand_info[i].name)
 410                                 nand_print_info(i);
 411                 }
 412                 return 0;
 413         }
 414
 415         if (strcmp(cmd, "device") == 0) {
 416                 if (argc < 3) {
 417                         putc('\n');
 418                         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
 419                                 puts("no devices available\n");
 420                         else
 421                                 nand_print_info(dev);
 422                         return 0;
 423                 }
 424
 425                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 426                 set_dev(dev);
 427
 428                 return 0;
 429         }
 430
 431 #ifdef CONFIG_ENV_OFFSET_OOB
 432         /* this command operates only on the first nand device */
 433         if (strcmp(cmd, "env.oob") == 0)
 434                 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
 435 #endif
 436
 437         /* The following commands operate on the current device, unless
 438          * overridden by a partition specifier.  Note that if somehow the
 439          * current device is invalid, it will have to be changed to a valid
 440          * one before these commands can run, even if a partition specifier
 441          * for another device is to be used.
 442          */
 443         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
 444             !nand_info[dev].name) {
 445                 puts("\nno devices available\n");
 446                 return 1;
 447         }
 448         nand = &nand_info[dev];
 449
 450         if (strcmp(cmd, "bad") == 0) {
 451                 printf("\nDevice %d bad blocks:\n", dev);
 452                 for (off = 0; off < nand->size; off += nand->erasesize)
 453                         if (nand_block_isbad(nand, off))
 454                                 printf("  %08llx\n", (unsigned long long)off);
 455                 return 0;
 456         }
 457
 458         /*
 459          * Syntax is:
 460          *   0    1     2       3    4
 461          *   nand erase [clean] [off size]
 462          */
 463         if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
 464                 nand_erase_options_t opts;
 465                 /* "clean" at index 2 means request to write cleanmarker */
 466                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 467                 int o = clean ? 3 : 2;
 468                 int scrub = !strncmp(cmd, "scrub", 5);
 469                 int part = 0;
 470                 int chip = 0;
 471                 int spread = 0;
 472                 int args = 2;
 473
 474                 if (cmd[5] != 0) {
 475                         if (!strcmp(&cmd[5], ".spread")) {
 476                                 spread = 1;
 477                         } else if (!strcmp(&cmd[5], ".part")) {
 478                                 part = 1;
 479                                 args = 1;
 480                         } else if (!strcmp(&cmd[5], ".chip")) {
 481                                 chip = 1;
 482                                 args = 0;
 483                         } else {
 484                                 goto usage;
 485                         }
 486                 }
 487
 488                 /*
 489                  * Don't allow missing arguments to cause full chip/partition
 490                  * erases -- easy to do accidentally, e.g. with a misspelled
 491                  * variable name.
 492                  */
 493                 if (argc != o + args)
 494                         goto usage;
 495
 496                 printf("\nNAND %s: ", cmd);
 497                 /* skip first two or three arguments, look for offset and size */
 498                 if (arg_off_size(argc - o, argv + o, &dev, &off, &size) != 0)
 499                         return 1;
 500
 501                 nand = &nand_info[dev];
 502
 503                 memset(&opts, 0, sizeof(opts));
 504                 opts.offset = off;
 505                 opts.length = size;
 506                 opts.jffs2  = clean;
 507                 opts.quiet  = quiet;
 508                 opts.spread = spread;
 509
 510                 if (scrub) {
 511                         puts("Warning: "
 512                              "scrub option will erase all factory set "
 513                              "bad blocks!\n"
 514                              "         "
 515                              "There is no reliable way to recover them.\n"
 516                              "         "
 517                              "Use this command only for testing purposes "
 518                              "if you\n"
 519                              "         "
 520                              "are sure of what you are doing!\n"
 521                              "\nReally scrub this NAND flash? <y/N>\n");
 522
 523                         if (getc() == 'y') {
 524                                 puts("y");
 525                                 if (getc() == '\r')
 526                                         opts.scrub = 1;
 527                                 else {
 528                                         puts("scrub aborted\n");
 529                                         return -1;
 530                                 }
 531                         } else {
 532                                 puts("scrub aborted\n");
 533                                 return -1;
 534                         }
 535                 }
 536                 ret = nand_erase_opts(nand, &opts);
 537                 printf("%s\n", ret ? "ERROR" : "OK");
 538
 539                 return ret == 0 ? 0 : 1;
 540         }
 541
 542         if (strncmp(cmd, "dump", 4) == 0) {
 543                 if (argc < 3)
 544                         goto usage;
 545
 546                 off = (int)simple_strtoul(argv[2], NULL, 16);
 547                 ret = nand_dump(nand, off, !strcmp(&cmd[4], ".oob"), repeat);
 548
 549                 return ret == 0 ? 1 : 0;
 550         }
 551
 552         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 553                 size_t rwsize;
 554                 int read;
 555
 556                 if (argc < 4)
 557                         goto usage;
 558
 559                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 560
 561                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 562                 printf("\nNAND %s: ", read ? "read" : "write");
 563                 if (arg_off_size(argc - 3, argv + 3, &dev, &off, &size) != 0)
 564                         return 1;
 565
 566                 nand = &nand_info[dev];
 567                 rwsize = size;
 568
 569                 s = strchr(cmd, '.');
 570                 if (!s || !strcmp(s, ".jffs2") ||
 571                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
 572                         if (read)
 573                                 ret = nand_read_skip_bad(nand, off, &rwsize,
 574                                                          (u_char *)addr);
 575                         else
 576                                 ret = nand_write_skip_bad(nand, off, &rwsize,
 577                                                           (u_char *)addr);
 578                 } else if (!strcmp(s, ".oob")) {
 579                         /* out-of-band data */
 580                         mtd_oob_ops_t ops = {
 581                                 .oobbuf = (u8 *)addr,
 582                                 .ooblen = rwsize,
 583                                 .mode = MTD_OOB_RAW
 584                         };
 585
 586                         if (read)
 587                                 ret = nand->read_oob(nand, off, &ops);
 588                         else
 589                                 ret = nand->write_oob(nand, off, &ops);
 590                 } else {
 591                         printf("Unknown nand command suffix '%s'.\n", s);
 592                         return 1;
 593                 }
 594
 595                 printf(" %zu bytes %s: %s\n", rwsize,
 596                        read ? "read" : "written", ret ? "ERROR" : "OK");
 597
 598                 return ret == 0 ? 0 : 1;
 599         }
 600
 601         if (strcmp(cmd, "markbad") == 0) {
 602                 argc -= 2;
 603                 argv += 2;
 604
 605                 if (argc <= 0)
 606                         goto usage;
 607
 608                 while (argc > 0) {
 609                         addr = simple_strtoul(*argv, NULL, 16);
 610
 611                         if (nand->block_markbad(nand, addr)) {
 612                                 printf("block 0x%08lx NOT marked "
 613                                         "as bad! ERROR %d\n",
 614                                         addr, ret);
 615                                 ret = 1;
 616                         } else {
 617                                 printf("block 0x%08lx successfully "
 618                                         "marked as bad\n",
 619                                         addr);
 620                         }
 621                         --argc;
 622                         ++argv;
 623                 }
 624                 return ret;
 625         }
 626
 627         if (strcmp(cmd, "biterr") == 0) {
 628                 /* todo */
 629                 return 1;
 630         }
 631
 632 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 633         if (strcmp(cmd, "lock") == 0) {
 634                 int tight = 0;
 635                 int status = 0;
 636                 if (argc == 3) {
 637                         if (!strcmp("tight", argv[2]))
 638                                 tight = 1;
 639                         if (!strcmp("status", argv[2]))
 640                                 status = 1;
 641                 }
 642                 if (status) {
 643                         do_nand_status(nand);
 644                 } else {
 645                         if (!nand_lock(nand, tight)) {
 646                                 puts("NAND flash successfully locked\n");
 647                         } else {
 648                                 puts("Error locking NAND flash\n");
 649                                 return 1;
 650                         }
 651                 }
 652                 return 0;
 653         }
 654
 655         if (strcmp(cmd, "unlock") == 0) {
 656                 if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size) < 0)
 657                         return 1;
 658
 659                 if (!nand_unlock(&nand_info[dev], off, size)) {
 660                         puts("NAND flash successfully unlocked\n");
 661                 } else {
 662                         puts("Error unlocking NAND flash, "
 663                              "write and erase will probably fail\n");
 664                         return 1;
 665                 }
 666                 return 0;
 667         }
 668 #endif
 669
 670 usage:
 671         return cmd_usage(cmdtp);
 672 }
 673
 674 U_BOOT_CMD(
 675         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 676         "NAND sub-system",
 677         "info - show available NAND devices\n"
 678         "nand device [dev] - show or set current device\n"
 679         "nand read - addr off|partition size\n"
 680         "nand write - addr off|partition size\n"
 681         "    read/write 'size' bytes starting at offset 'off'\n"
 682         "    to/from memory address 'addr', skipping bad blocks.\n"
 683         "nand erase[.spread] [clean] [off [size]] - erase 'size' bytes "
 684         "from offset 'off'\n"
 685         "    With '.spread', erase enough for given file size, otherwise,\n"
 686         "    'size' includes skipped bad blocks.\n"
 687         "nand erase.part [clean] partition - erase entire mtd partition'\n"
 688         "nand erase.chip [clean] - erase entire chip'\n"
 689         "nand bad - show bad blocks\n"
 690         "nand dump[.oob] off - dump page\n"
 691         "nand scrub off size | scrub.part partition | scrub.chip\n"
 692         "    really clean NAND erasing bad blocks (UNSAFE)\n"
 693         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 694         "nand biterr off - make a bit error at offset (UNSAFE)"
 695 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 696         "\n"
 697         "nand lock [tight] [status]\n"
 698         "    bring nand to lock state or display locked pages\n"
 699         "nand unlock [offset] [size] - unlock section"
 700 #endif
 701 #ifdef CONFIG_ENV_OFFSET_OOB
 702         "\n"
 703         "nand env.oob - environment offset in OOB of block 0 of"
 704         "    first device.\n"
 705         "nand env.oob set off|partition - set enviromnent offset\n"
 706         "nand env.oob get - get environment offset"
 707 #endif
 708 );
 709
 710 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 711                            ulong offset, ulong addr, char *cmd)
 712 {
 713         int r;
 714         char *ep, *s;
 715         size_t cnt;
 716         image_header_t *hdr;
 717 #if defined(CONFIG_FIT)
 718         const void *fit_hdr = NULL;
 719 #endif
 720
 721         s = strchr(cmd, '.');
 722         if (s != NULL &&
 723             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 724                 printf("Unknown nand load suffix '%s'\n", s);
 725                 show_boot_progress(-53);
 726                 return 1;
 727         }
 728
 729         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 730
 731         cnt = nand->writesize;
 732         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 733         if (r) {
 734                 puts("** Read error\n");
 735                 show_boot_progress (-56);
 736                 return 1;
 737         }
 738         show_boot_progress (56);
 739
 740         switch (genimg_get_format ((void *)addr)) {
 741         case IMAGE_FORMAT_LEGACY:
 742                 hdr = (image_header_t *)addr;
 743
 744                 show_boot_progress (57);
 745                 image_print_contents (hdr);
 746
 747                 cnt = image_get_image_size (hdr);
 748                 break;
 749 #if defined(CONFIG_FIT)
 750         case IMAGE_FORMAT_FIT:
 751                 fit_hdr = (const void *)addr;
 752                 puts ("Fit image detected...\n");
 753
 754                 cnt = fit_get_size (fit_hdr);
 755                 break;
 756 #endif
 757         default:
 758                 show_boot_progress (-57);
 759                 puts ("** Unknown image type\n");
 760                 return 1;
 761         }
 762         show_boot_progress (57);
 763
 764         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 765         if (r) {
 766                 puts("** Read error\n");
 767                 show_boot_progress (-58);
 768                 return 1;
 769         }
 770         show_boot_progress (58);
 771
 772 #if defined(CONFIG_FIT)
 773         /* This cannot be done earlier, we need complete FIT image in RAM first */
 774         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 775                 if (!fit_check_format (fit_hdr)) {
 776                         show_boot_progress (-150);
 777                         puts ("** Bad FIT image format\n");
 778                         return 1;
 779                 }
 780                 show_boot_progress (151);
 781                 fit_print_contents (fit_hdr);
 782         }
 783 #endif
 784
 785         /* Loading ok, update default load address */
 786
 787         load_addr = addr;
 788
 789         /* Check if we should attempt an auto-start */
 790         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 791                 char *local_args[2];
 792                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 793
 794                 local_args[0] = cmd;
 795                 local_args[1] = NULL;
 796
 797                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 798
 799                 do_bootm(cmdtp, 0, 1, local_args);
 800                 return 1;
 801         }
 802         return 0;
 803 }
 804
 805 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 806 {
 807         char *boot_device = NULL;
 808         int idx;
 809         ulong addr, offset = 0;
 810 #if defined(CONFIG_CMD_MTDPARTS)
 811         struct mtd_device *dev;
 812         struct part_info *part;
 813         u8 pnum;
 814
 815         if (argc >= 2) {
 816                 char *p = (argc == 2) ? argv[1] : argv[2];
 817                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 818                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 819                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 820                                 puts("Not a NAND device\n");
 821                                 return 1;
 822                         }
 823                         if (argc > 3)
 824                                 goto usage;
 825                         if (argc == 3)
 826                                 addr = simple_strtoul(argv[1], NULL, 16);
 827                         else
 828                                 addr = CONFIG_SYS_LOAD_ADDR;
 829                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 830                                                part->offset, addr, argv[0]);
 831                 }
 832         }
 833 #endif
 834
 835         show_boot_progress(52);
 836         switch (argc) {
 837         case 1:
 838                 addr = CONFIG_SYS_LOAD_ADDR;
 839                 boot_device = getenv("bootdevice");
 840                 break;
 841         case 2:
 842                 addr = simple_strtoul(argv[1], NULL, 16);
 843                 boot_device = getenv("bootdevice");
 844                 break;
 845         case 3:
 846                 addr = simple_strtoul(argv[1], NULL, 16);
 847                 boot_device = argv[2];
 848                 break;
 849         case 4:
 850                 addr = simple_strtoul(argv[1], NULL, 16);
 851                 boot_device = argv[2];
 852                 offset = simple_strtoul(argv[3], NULL, 16);
 853                 break;
 854         default:
 855 #if defined(CONFIG_CMD_MTDPARTS)
 856 usage:
 857 #endif
 858                 show_boot_progress(-53);
 859                 return cmd_usage(cmdtp);
 860         }
 861
 862         show_boot_progress(53);
 863         if (!boot_device) {
 864                 puts("\n** No boot device **\n");
 865                 show_boot_progress(-54);
 866                 return 1;
 867         }
 868         show_boot_progress(54);
 869
 870         idx = simple_strtoul(boot_device, NULL, 16);
 871
 872         if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
 873                 printf("\n** Device %d not available\n", idx);
 874                 show_boot_progress(-55);
 875                 return 1;
 876         }
 877         show_boot_progress(55);
 878
 879         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 880 }
 881
 882 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 883         "boot from NAND device",
 884         "[partition] | [[[loadAddr] dev] offset]"
 885 );