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               if(datbuf)
  56                  free(datbuf);
  57               if(oobbuf)
  58                 free(oobbuf);
  59                 return 1;
  60         }
  61         off &= ~(nand->writesize - 1);
  62         loff_t addr = (loff_t) off;
  63         struct mtd_oob_ops ops;
  64         memset(&ops, 0, sizeof(ops));
  65         ops.datbuf = datbuf;
  66         ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
  67         ops.len = nand->writesize;
  68         ops.ooblen = nand->oobsize;
  69         ops.mode = MTD_OOB_RAW;
  70         i = nand->read_oob(nand, addr, &ops);
  71         if (i < 0) {
  72                 printf("Error (%d) reading page %08lx\n", i, off);
  73                 free(datbuf);
  74                 free(oobbuf);
  75                 return 1;
  76         }
  77         printf("Page %08lx dump:\n", off);
  78         i = nand->writesize >> 4;
  79         p = datbuf;
  80
  81         while (i--) {
  82                 if (!only_oob)
  83                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
  84                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
  85                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
  86                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
  87                                p[15]);
  88                 p += 16;
  89         }
  90         puts("OOB:\n");
  91         i = nand->oobsize >> 3;
  92         while (i--) {
  93                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
  94                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
  95                 p += 8;
  96         }
  97         free(datbuf);
  98         free(oobbuf);
  99
 100         return 0;
 101 }
 102
 103 /* ------------------------------------------------------------------------- */
 104
 105 static int set_dev(int dev)
 106 {
 107         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
 108             !nand_info[dev].name) {
 109                 puts("No such device\n");
 110                 return -1;
 111         }
 112
 113         if (nand_curr_device == dev)
 114                 return 0;
 115
 116         printf("Device %d: %s", dev, nand_info[dev].name);
 117         puts("... is now current device\n");
 118         nand_curr_device = dev;
 119
 120 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 121         board_nand_select_device(nand_info[dev].priv, dev);
 122 #endif
 123
 124         return 0;
 125 }
 126
 127 static inline int str2off(const char *p, loff_t *num)
 128 {
 129         char *endptr;
 130
 131         *num = simple_strtoull(p, &endptr, 16);
 132         return *p != '\0' && *endptr == '\0';
 133 }
 134
 135 static inline int str2long(const char *p, ulong *num)
 136 {
 137         char *endptr;
 138
 139         *num = simple_strtoul(p, &endptr, 16);
 140         return *p != '\0' && *endptr == '\0';
 141 }
 142
 143 static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size)
 144 {
 145 #ifdef CONFIG_CMD_MTDPARTS
 146         struct mtd_device *dev;
 147         struct part_info *part;
 148         u8 pnum;
 149         int ret;
 150
 151         ret = mtdparts_init();
 152         if (ret)
 153                 return ret;
 154
 155         ret = find_dev_and_part(partname, &dev, &pnum, &part);
 156         if (ret)
 157                 return ret;
 158
 159         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 160                 puts("not a NAND device\n");
 161                 return -1;
 162         }
 163
 164         *off = part->offset;
 165         *size = part->size;
 166         *idx = dev->id->num;
 167
 168         ret = set_dev(*idx);
 169         if (ret)
 170                 return ret;
 171
 172         return 0;
 173 #else
 174         puts("offset is not a number\n");
 175         return -1;
 176 #endif
 177 }
 178
 179 static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *maxsize)
 180 {
 181         if (!str2off(arg, off))
 182                 return get_part(arg, idx, off, maxsize);
 183
 184         if (*off >= nand_info[*idx].size) {
 185                 puts("Offset exceeds device limit\n");
 186                 return -1;
 187         }
 188
 189         *maxsize = nand_info[*idx].size - *off;
 190         return 0;
 191 }
 192
 193 static int arg_off_size(int argc, char *const argv[], int *idx,
 194                         loff_t *off, loff_t *size)
 195 {
 196         int ret;
 197         loff_t maxsize;
 198
 199         if (argc == 0) {
 200                 *off = 0;
 201                 *size = nand_info[*idx].size;
 202                 goto print;
 203         }
 204
 205         ret = arg_off(argv[0], idx, off, &maxsize);
 206         if (ret)
 207                 return ret;
 208
 209         if (argc == 1) {
 210                 *size = maxsize;
 211                 goto print;
 212         }
 213
 214         if (!str2off(argv[1], size)) {
 215                 printf("'%s' is not a number\n", argv[1]);
 216                 return -1;
 217         }
 218
 219         if (*size > maxsize) {
 220                 puts("Size exceeds partition or device limit\n");
 221                 return -1;
 222         }
 223
 224 print:
 225         printf("device %d ", *idx);
 226         if (*size == nand_info[*idx].size)
 227                 puts("whole chip\n");
 228         else
 229                 printf("offset 0x%llx, size 0x%llx\n",
 230                        (unsigned long long)*off, (unsigned long long)*size);
 231         return 0;
 232 }
 233
 234 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 235 static void print_status(ulong start, ulong end, ulong erasesize, int status)
 236 {
 237         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
 238                 start,
 239                 end - 1,
 240                 (end - start) / erasesize,
 241                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
 242                 ((status & NAND_LOCK_STATUS_LOCK) ?  "LOCK " : ""),
 243                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
 244 }
 245
 246 static void do_nand_status(nand_info_t *nand)
 247 {
 248         ulong block_start = 0;
 249         ulong off;
 250         int last_status = -1;
 251
 252         struct nand_chip *nand_chip = nand->priv;
 253         /* check the WP bit */
 254         nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
 255         printf("device is %swrite protected\n",
 256                 (nand_chip->read_byte(nand) & 0x80 ?
 257                 "NOT " : ""));
 258
 259         for (off = 0; off < nand->size; off += nand->erasesize) {
 260                 int s = nand_get_lock_status(nand, off);
 261
 262                 /* print message only if status has changed */
 263                 if (s != last_status && off != 0) {
 264                         print_status(block_start, off, nand->erasesize,
 265                                         last_status);
 266                         block_start = off;
 267                 }
 268                 last_status = s;
 269         }
 270         /* Print the last block info */
 271         print_status(block_start, off, nand->erasesize, last_status);
 272 }
 273 #endif
 274
 275 #ifdef CONFIG_ENV_OFFSET_OOB
 276 unsigned long nand_env_oob_offset;
 277
 278 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
 279 {
 280         int ret;
 281         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
 282         nand_info_t *nand = &nand_info[0];
 283         char *cmd = argv[1];
 284
 285         if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !nand->name) {
 286                 puts("no devices available\n");
 287                 return 1;
 288         }
 289
 290         set_dev(0);
 291
 292         if (!strcmp(cmd, "get")) {
 293                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 294                 if (ret)
 295                         return 1;
 296
 297                 printf("0x%08lx\n", nand_env_oob_offset);
 298         } else if (!strcmp(cmd, "set")) {
 299                 loff_t addr;
 300                 loff_t maxsize;
 301                 struct mtd_oob_ops ops;
 302                 int idx = 0;
 303
 304                 if (argc < 3)
 305                         goto usage;
 306
 307                 if (arg_off(argv[2], &idx, &addr, &maxsize)) {
 308                         puts("Offset or partition name expected\n");
 309                         return 1;
 310                 }
 311
 312                 if (idx != 0) {
 313                         puts("Partition not on first NAND device\n");
 314                         return 1;
 315                 }
 316
 317                 if (nand->oobavail < ENV_OFFSET_SIZE) {
 318                         printf("Insufficient available OOB bytes:\n"
 319                                "%d OOB bytes available but %d required for "
 320                                "env.oob support\n",
 321                                nand->oobavail, ENV_OFFSET_SIZE);
 322                         return 1;
 323                 }
 324
 325                 if ((addr & (nand->erasesize - 1)) != 0) {
 326                         printf("Environment offset must be block-aligned\n");
 327                         return 1;
 328                 }
 329
 330                 ops.datbuf = NULL;
 331                 ops.mode = MTD_OOB_AUTO;
 332                 ops.ooboffs = 0;
 333                 ops.ooblen = ENV_OFFSET_SIZE;
 334                 ops.oobbuf = (void *) oob_buf;
 335
 336                 oob_buf[0] = ENV_OOB_MARKER;
 337                 oob_buf[1] = addr / nand->erasesize;
 338
 339                 ret = nand->write_oob(nand, ENV_OFFSET_SIZE, &ops);
 340                 if (ret) {
 341                         printf("Error writing OOB block 0\n");
 342                         return ret;
 343                 }
 344
 345                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 346                 if (ret) {
 347                         printf("Error reading env offset in OOB\n");
 348                         return ret;
 349                 }
 350
 351                 if (addr != nand_env_oob_offset) {
 352                         printf("Verification of env offset in OOB failed: "
 353                                "0x%08llx expected but got 0x%08lx\n",
 354                                (unsigned long long)addr, nand_env_oob_offset);
 355                         return 1;
 356                 }
 357         } else {
 358                 goto usage;
 359         }
 360
 361         return ret;
 362
 363 usage:
 364         return cmd_usage(cmdtp);
 365 }
 366
 367 #endif
 368
 369 static void nand_print_info(int idx)
 370 {
 371         nand_info_t *nand = &nand_info[idx];
 372         struct nand_chip *chip = nand->priv;
 373         printf("Device %d: ", idx);
 374         if (chip->numchips > 1)
 375                 printf("%dx ", chip->numchips);
 376         printf("%s, sector size %u KiB\n",
 377                nand->name, nand->erasesize >> 10);
 378 }
 379
 380 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 381 {
 382         int i, ret = 0;
 383         ulong addr;
 384         loff_t off, size;
 385         char *cmd, *s;
 386         nand_info_t *nand;
 387 #ifdef CONFIG_SYS_NAND_QUIET
 388         int quiet = CONFIG_SYS_NAND_QUIET;
 389 #else
 390         int quiet = 0;
 391 #endif
 392         const char *quiet_str = getenv("quiet");
 393         int dev = nand_curr_device;
 394         int repeat = flag & CMD_FLAG_REPEAT;
 395
 396         /* at least two arguments please */
 397         if (argc < 2)
 398                 goto usage;
 399
 400         if (quiet_str)
 401                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 402
 403         cmd = argv[1];
 404
 405         /* Only "dump" is repeatable. */
 406         if (repeat && strcmp(cmd, "dump"))
 407                 return 0;
 408
 409         if (strcmp(cmd, "info") == 0) {
 410
 411                 putc('\n');
 412                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
 413                         if (nand_info[i].name)
 414                                 nand_print_info(i);
 415                 }
 416                 return 0;
 417         }
 418
 419         if (strcmp(cmd, "device") == 0) {
 420                 if (argc < 3) {
 421                         putc('\n');
 422                         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
 423                                 puts("no devices available\n");
 424                         else
 425                                 nand_print_info(dev);
 426                         return 0;
 427                 }
 428
 429                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 430                 set_dev(dev);
 431
 432                 return 0;
 433         }
 434
 435 #ifdef CONFIG_ENV_OFFSET_OOB
 436         /* this command operates only on the first nand device */
 437         if (strcmp(cmd, "env.oob") == 0)
 438                 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
 439 #endif
 440
 441         /* The following commands operate on the current device, unless
 442          * overridden by a partition specifier.  Note that if somehow the
 443          * current device is invalid, it will have to be changed to a valid
 444          * one before these commands can run, even if a partition specifier
 445          * for another device is to be used.
 446          */
 447         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
 448             !nand_info[dev].name) {
 449                 puts("\nno devices available\n");
 450                 return 1;
 451         }
 452         nand = &nand_info[dev];
 453
 454         if (strcmp(cmd, "bad") == 0) {
 455                 printf("\nDevice %d bad blocks:\n", dev);
 456                 for (off = 0; off < nand->size; off += nand->erasesize)
 457                         if (nand_block_isbad(nand, off))
 458                                 printf("  %08llx\n", (unsigned long long)off);
 459                 return 0;
 460         }
 461
 462         /*
 463          * Syntax is:
 464          *   0    1     2       3    4
 465          *   nand erase [clean] [off size]
 466          */
 467         if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
 468                 nand_erase_options_t opts;
 469                 /* "clean" at index 2 means request to write cleanmarker */
 470                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 471                 int o = clean ? 3 : 2;
 472                 int scrub = !strncmp(cmd, "scrub", 5);
 473                 int part = 0;
 474                 int chip = 0;
 475                 int spread = 0;
 476                 int args = 2;
 477
 478                 if (cmd[5] != 0) {
 479                         if (!strcmp(&cmd[5], ".spread")) {
 480                                 spread = 1;
 481                         } else if (!strcmp(&cmd[5], ".part")) {
 482                                 part = 1;
 483                                 args = 1;
 484                         } else if (!strcmp(&cmd[5], ".chip")) {
 485                                 chip = 1;
 486                                 args = 0;
 487                         } else {
 488                                 goto usage;
 489                         }
 490                 }
 491
 492                 /*
 493                  * Don't allow missing arguments to cause full chip/partition
 494                  * erases -- easy to do accidentally, e.g. with a misspelled
 495                  * variable name.
 496                  */
 497                 if (argc != o + args)
 498                         goto usage;
 499
 500                 printf("\nNAND %s: ", cmd);
 501                 /* skip first two or three arguments, look for offset and size */
 502                 if (arg_off_size(argc - o, argv + o, &dev, &off, &size) != 0)
 503                         return 1;
 504
 505                 nand = &nand_info[dev];
 506
 507                 memset(&opts, 0, sizeof(opts));
 508                 opts.offset = off;
 509                 opts.length = size;
 510                 opts.jffs2  = clean;
 511                 opts.quiet  = quiet;
 512                 opts.spread = spread;
 513
 514                 if (scrub) {
 515                         puts("Warning: "
 516                              "scrub option will erase all factory set "
 517                              "bad blocks!\n"
 518                              "         "
 519                              "There is no reliable way to recover them.\n"
 520                              "         "
 521                              "Use this command only for testing purposes "
 522                              "if you\n"
 523                              "         "
 524                              "are sure of what you are doing!\n"
 525                              "\nReally scrub this NAND flash? <y/N>\n");
 526
 527                         if (getc() == 'y') {
 528                                 puts("y");
 529                                 if (getc() == '\r')
 530                                         opts.scrub = 1;
 531                                 else {
 532                                         puts("scrub aborted\n");
 533                                         return -1;
 534                                 }
 535                         } else {
 536                                 puts("scrub aborted\n");
 537                                 return -1;
 538                         }
 539                 }
 540                 ret = nand_erase_opts(nand, &opts);
 541                 printf("%s\n", ret ? "ERROR" : "OK");
 542
 543                 return ret == 0 ? 0 : 1;
 544         }
 545
 546         if (strncmp(cmd, "dump", 4) == 0) {
 547                 if (argc < 3)
 548                         goto usage;
 549
 550                 off = (int)simple_strtoul(argv[2], NULL, 16);
 551                 ret = nand_dump(nand, off, !strcmp(&cmd[4], ".oob"), repeat);
 552
 553                 return ret == 0 ? 1 : 0;
 554         }
 555
 556         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 557                 size_t rwsize;
 558                 int read;
 559
 560                 if (argc < 4)
 561                         goto usage;
 562
 563                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 564
 565                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 566                 printf("\nNAND %s: ", read ? "read" : "write");
 567                 if (arg_off_size(argc - 3, argv + 3, &dev, &off, &size) != 0)
 568                         return 1;
 569
 570                 nand = &nand_info[dev];
 571                 rwsize = size;
 572
 573                 s = strchr(cmd, '.');
 574                 if (!s || !strcmp(s, ".jffs2") ||
 575                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
 576                         if (read){
 577 #ifdef SPRD_EVM_TAG_ON
 578                 SPRD_EVM_TAG(12);
 579 #endif
 580                                 ret = nand_read_skip_bad(nand, off, &rwsize,
 581                                                          (u_char *)addr);
 582 #ifdef SPRD_EVM_TAG_ON
 583                 SPRD_EVM_TAG(13);
 584 #endif
 585                 }
 586                         else
 587                                 ret = nand_write_skip_bad(nand, off, &rwsize,
 588                                                           (u_char *)addr);
 589                 } else if (!strcmp(s, ".oob")) {
 590                         /* out-of-band data */
 591                         mtd_oob_ops_t ops = {
 592                                 .oobbuf = (u8 *)addr,
 593                                 .ooblen = rwsize,
 594                                 .mode = MTD_OOB_RAW
 595                         };
 596
 597                         if (read)
 598                                 ret = nand->read_oob(nand, off, &ops);
 599                         else
 600                                 ret = nand->write_oob(nand, off, &ops);
 601                 } else {
 602                         printf("Unknown nand command suffix '%s'.\n", s);
 603                         return 1;
 604                 }
 605
 606                 printf(" %zu bytes %s: %s\n", rwsize,
 607                        read ? "read" : "written", ret ? "ERROR" : "OK");
 608
 609                 return ret == 0 ? 0 : 1;
 610         }
 611
 612         if (strcmp(cmd, "markbad") == 0) {
 613                 argc -= 2;
 614                 argv += 2;
 615
 616                 if (argc <= 0)
 617                         goto usage;
 618
 619                 while (argc > 0) {
 620                         addr = simple_strtoul(*argv, NULL, 16);
 621
 622                         if (nand->block_markbad(nand, addr)) {
 623                                 printf("block 0x%08lx NOT marked "
 624                                         "as bad! ERROR %d\n",
 625                                         addr, ret);
 626                                 ret = 1;
 627                         } else {
 628                                 printf("block 0x%08lx successfully "
 629                                         "marked as bad\n",
 630                                         addr);
 631                         }
 632                         --argc;
 633                         ++argv;
 634                 }
 635                 return ret;
 636         }
 637
 638         if (strcmp(cmd, "biterr") == 0) {
 639                 /* todo */
 640                 return 1;
 641         }
 642
 643 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 644         if (strcmp(cmd, "lock") == 0) {
 645                 int tight = 0;
 646                 int status = 0;
 647                 if (argc == 3) {
 648                         if (!strcmp("tight", argv[2]))
 649                                 tight = 1;
 650                         if (!strcmp("status", argv[2]))
 651                                 status = 1;
 652                 }
 653                 if (status) {
 654                         do_nand_status(nand);
 655                 } else {
 656                         if (!nand_lock(nand, tight)) {
 657                                 puts("NAND flash successfully locked\n");
 658                         } else {
 659                                 puts("Error locking NAND flash\n");
 660                                 return 1;
 661                         }
 662                 }
 663                 return 0;
 664         }
 665
 666         if (strcmp(cmd, "unlock") == 0) {
 667                 if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size) < 0)
 668                         return 1;
 669
 670                 if (!nand_unlock(&nand_info[dev], off, size)) {
 671                         puts("NAND flash successfully unlocked\n");
 672                 } else {
 673                         puts("Error unlocking NAND flash, "
 674                              "write and erase will probably fail\n");
 675                         return 1;
 676                 }
 677                 return 0;
 678         }
 679 #endif
 680
 681 usage:
 682         return cmd_usage(cmdtp);
 683 }
 684
 685 U_BOOT_CMD(
 686         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 687         "NAND sub-system",
 688         "info - show available NAND devices\n"
 689         "nand device [dev] - show or set current device\n"
 690         "nand read - addr off|partition size\n"
 691         "nand write - addr off|partition size\n"
 692         "    read/write 'size' bytes starting at offset 'off'\n"
 693         "    to/from memory address 'addr', skipping bad blocks.\n"
 694         "nand erase[.spread] [clean] [off [size]] - erase 'size' bytes "
 695         "from offset 'off'\n"
 696         "    With '.spread', erase enough for given file size, otherwise,\n"
 697         "    'size' includes skipped bad blocks.\n"
 698         "nand erase.part [clean] partition - erase entire mtd partition'\n"
 699         "nand erase.chip [clean] - erase entire chip'\n"
 700         "nand bad - show bad blocks\n"
 701         "nand dump[.oob] off - dump page\n"
 702         "nand scrub off size | scrub.part partition | scrub.chip\n"
 703         "    really clean NAND erasing bad blocks (UNSAFE)\n"
 704         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 705         "nand biterr off - make a bit error at offset (UNSAFE)"
 706 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 707         "\n"
 708         "nand lock [tight] [status]\n"
 709         "    bring nand to lock state or display locked pages\n"
 710         "nand unlock [offset] [size] - unlock section"
 711 #endif
 712 #ifdef CONFIG_ENV_OFFSET_OOB
 713         "\n"
 714         "nand env.oob - environment offset in OOB of block 0 of"
 715         "    first device.\n"
 716         "nand env.oob set off|partition - set enviromnent offset\n"
 717         "nand env.oob get - get environment offset"
 718 #endif
 719 );
 720
 721 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 722                            ulong offset, ulong addr, char *cmd)
 723 {
 724         int r;
 725         char *ep, *s;
 726         size_t cnt;
 727         image_header_t *hdr;
 728 #if defined(CONFIG_FIT)
 729         const void *fit_hdr = NULL;
 730 #endif
 731
 732         s = strchr(cmd, '.');
 733         if (s != NULL &&
 734             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 735                 printf("Unknown nand load suffix '%s'\n", s);
 736                 show_boot_progress(-53);
 737                 return 1;
 738         }
 739
 740         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 741
 742         cnt = nand->writesize;
 743         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 744         if (r) {
 745                 puts("** Read error\n");
 746                 show_boot_progress (-56);
 747                 return 1;
 748         }
 749         show_boot_progress (56);
 750
 751         switch (genimg_get_format ((void *)addr)) {
 752         case IMAGE_FORMAT_LEGACY:
 753                 hdr = (image_header_t *)addr;
 754
 755                 show_boot_progress (57);
 756                 image_print_contents (hdr);
 757
 758                 cnt = image_get_image_size (hdr);
 759                 break;
 760 #if defined(CONFIG_FIT)
 761         case IMAGE_FORMAT_FIT:
 762                 fit_hdr = (const void *)addr;
 763                 puts ("Fit image detected...\n");
 764
 765                 cnt = fit_get_size (fit_hdr);
 766                 break;
 767 #endif
 768         default:
 769                 show_boot_progress (-57);
 770                 puts ("** Unknown image type\n");
 771                 return 1;
 772         }
 773         show_boot_progress (57);
 774
 775         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
 776         if (r) {
 777                 puts("** Read error\n");
 778                 show_boot_progress (-58);
 779                 return 1;
 780         }
 781         show_boot_progress (58);
 782
 783 #if defined(CONFIG_FIT)
 784         /* This cannot be done earlier, we need complete FIT image in RAM first */
 785         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 786                 if (!fit_check_format (fit_hdr)) {
 787                         show_boot_progress (-150);
 788                         puts ("** Bad FIT image format\n");
 789                         return 1;
 790                 }
 791                 show_boot_progress (151);
 792                 fit_print_contents (fit_hdr);
 793         }
 794 #endif
 795
 796         /* Loading ok, update default load address */
 797
 798         load_addr = addr;
 799
 800         /* Check if we should attempt an auto-start */
 801         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 802                 char *local_args[2];
 803                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 804
 805                 local_args[0] = cmd;
 806                 local_args[1] = NULL;
 807
 808                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 809
 810                 do_bootm(cmdtp, 0, 1, local_args);
 811                 return 1;
 812         }
 813         return 0;
 814 }
 815
 816 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 817 {
 818         char *boot_device = NULL;
 819         int idx;
 820         ulong addr, offset = 0;
 821 #if defined(CONFIG_CMD_MTDPARTS)
 822         struct mtd_device *dev;
 823         struct part_info *part;
 824         u8 pnum;
 825
 826         if (argc >= 2) {
 827                 char *p = (argc == 2) ? argv[1] : argv[2];
 828                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 829                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 830                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 831                                 puts("Not a NAND device\n");
 832                                 return 1;
 833                         }
 834                         if (argc > 3)
 835                                 goto usage;
 836                         if (argc == 3)
 837                                 addr = simple_strtoul(argv[1], NULL, 16);
 838                         else
 839                                 addr = CONFIG_SYS_LOAD_ADDR;
 840                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 841                                                part->offset, addr, argv[0]);
 842                 }
 843         }
 844 #endif
 845
 846         show_boot_progress(52);
 847         switch (argc) {
 848         case 1:
 849                 addr = CONFIG_SYS_LOAD_ADDR;
 850                 boot_device = getenv("bootdevice");
 851                 break;
 852         case 2:
 853                 addr = simple_strtoul(argv[1], NULL, 16);
 854                 boot_device = getenv("bootdevice");
 855                 break;
 856         case 3:
 857                 addr = simple_strtoul(argv[1], NULL, 16);
 858                 boot_device = argv[2];
 859                 break;
 860         case 4:
 861                 addr = simple_strtoul(argv[1], NULL, 16);
 862                 boot_device = argv[2];
 863                 offset = simple_strtoul(argv[3], NULL, 16);
 864                 break;
 865         default:
 866 #if defined(CONFIG_CMD_MTDPARTS)
 867 usage:
 868 #endif
 869                 show_boot_progress(-53);
 870                 return cmd_usage(cmdtp);
 871         }
 872
 873         show_boot_progress(53);
 874         if (!boot_device) {
 875                 puts("\n** No boot device **\n");
 876                 show_boot_progress(-54);
 877                 return 1;
 878         }
 879         show_boot_progress(54);
 880
 881         idx = simple_strtoul(boot_device, NULL, 16);
 882
 883         if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
 884                 printf("\n** Device %d not available\n", idx);
 885                 show_boot_progress(-55);
 886                 return 1;
 887         }
 888         show_boot_progress(55);
 889
 890         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 891 }
 892
 893 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 894         "boot from NAND device",
 895         "[partition] | [[[loadAddr] dev] offset]"
 896 );