git.sur5r.net Git - u-boot/blob - 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, 2012 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 <console.h>
  26 #include <watchdog.h>
  27 #include <malloc.h>
  28 #include <asm/byteorder.h>
  29 #include <jffs2/jffs2.h>
  30 #include <nand.h>
  31
  32 #if defined(CONFIG_CMD_MTDPARTS)
  33
  34 /* partition handling routines */
  35 int mtdparts_init(void);
  36 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
  37 int find_dev_and_part(const char *id, struct mtd_device **dev,
  38                       u8 *part_num, struct part_info **part);
  39 #endif
  40
  41 static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob,
  42                      int repeat)
  43 {
  44         int i;
  45         u_char *datbuf, *oobbuf, *p;
  46         static loff_t last;
  47         int ret = 0;
  48
  49         if (repeat)
  50                 off = last + mtd->writesize;
  51
  52         last = off;
  53
  54         datbuf = memalign(ARCH_DMA_MINALIGN, mtd->writesize);
  55         if (!datbuf) {
  56                 puts("No memory for page buffer\n");
  57                 return 1;
  58         }
  59
  60         oobbuf = memalign(ARCH_DMA_MINALIGN, mtd->oobsize);
  61         if (!oobbuf) {
  62                 puts("No memory for page buffer\n");
  63                 ret = 1;
  64                 goto free_dat;
  65         }
  66         off &= ~(mtd->writesize - 1);
  67         loff_t addr = (loff_t) off;
  68         struct mtd_oob_ops ops;
  69         memset(&ops, 0, sizeof(ops));
  70         ops.datbuf = datbuf;
  71         ops.oobbuf = oobbuf;
  72         ops.len = mtd->writesize;
  73         ops.ooblen = mtd->oobsize;
  74         ops.mode = MTD_OPS_RAW;
  75         i = mtd_read_oob(mtd, addr, &ops);
  76         if (i < 0) {
  77                 printf("Error (%d) reading page %08lx\n", i, off);
  78                 ret = 1;
  79                 goto free_all;
  80         }
  81         printf("Page %08lx dump:\n", off);
  82
  83         if (!only_oob) {
  84                 i = mtd->writesize >> 4;
  85                 p = datbuf;
  86
  87                 while (i--) {
  88                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
  89                                "  %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], p[9], p[10], p[11], p[12], p[13], p[14],
  92                                p[15]);
  93                         p += 16;
  94                 }
  95         }
  96
  97         puts("OOB:\n");
  98         i = mtd->oobsize >> 3;
  99         p = oobbuf;
 100         while (i--) {
 101                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
 102                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 103                 p += 8;
 104         }
 105
 106 free_all:
 107         free(oobbuf);
 108 free_dat:
 109         free(datbuf);
 110
 111         return ret;
 112 }
 113
 114 /* ------------------------------------------------------------------------- */
 115
 116 static int set_dev(int dev)
 117 {
 118         struct mtd_info *mtd = get_nand_dev_by_index(dev);
 119
 120         if (!mtd)
 121                 return -ENODEV;
 122
 123         if (nand_curr_device == dev)
 124                 return 0;
 125
 126         printf("Device %d: %s", dev, mtd->name);
 127         puts("... is now current device\n");
 128         nand_curr_device = dev;
 129
 130 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 131         board_nand_select_device(mtd_to_nand(mtd), dev);
 132 #endif
 133
 134         return 0;
 135 }
 136
 137 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 138 static void print_status(ulong start, ulong end, ulong erasesize, int status)
 139 {
 140         /*
 141          * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is
 142          * not the same as others.  Instead of bit 1 being lock, it is
 143          * #lock_tight. To make the driver support either format, ignore bit 1
 144          * and use only bit 0 and bit 2.
 145          */
 146         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
 147                 start,
 148                 end - 1,
 149                 (end - start) / erasesize,
 150                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
 151                 (!(status & NAND_LOCK_STATUS_UNLOCK) ?  "LOCK " : ""),
 152                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
 153 }
 154
 155 static void do_nand_status(struct mtd_info *mtd)
 156 {
 157         ulong block_start = 0;
 158         ulong off;
 159         int last_status = -1;
 160
 161         struct nand_chip *nand_chip = mtd_to_nand(mtd);
 162         /* check the WP bit */
 163         nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
 164         printf("device is %swrite protected\n",
 165                 (nand_chip->read_byte(mtd) & 0x80 ?
 166                  "NOT " : ""));
 167
 168         for (off = 0; off < mtd->size; off += mtd->erasesize) {
 169                 int s = nand_get_lock_status(mtd, off);
 170
 171                 /* print message only if status has changed */
 172                 if (s != last_status && off != 0) {
 173                         print_status(block_start, off, mtd->erasesize,
 174                                         last_status);
 175                         block_start = off;
 176                 }
 177                 last_status = s;
 178         }
 179         /* Print the last block info */
 180         print_status(block_start, off, mtd->erasesize, last_status);
 181 }
 182 #endif
 183
 184 #ifdef CONFIG_ENV_OFFSET_OOB
 185 unsigned long nand_env_oob_offset;
 186
 187 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
 188 {
 189         int ret;
 190         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
 191         struct mtd_info *mtd = get_nand_dev_by_index(0);
 192         char *cmd = argv[1];
 193
 194         if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd) {
 195                 puts("no devices available\n");
 196                 return 1;
 197         }
 198
 199         set_dev(0);
 200
 201         if (!strcmp(cmd, "get")) {
 202                 ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
 203                 if (ret)
 204                         return 1;
 205
 206                 printf("0x%08lx\n", nand_env_oob_offset);
 207         } else if (!strcmp(cmd, "set")) {
 208                 loff_t addr;
 209                 loff_t maxsize;
 210                 struct mtd_oob_ops ops;
 211                 int idx = 0;
 212
 213                 if (argc < 3)
 214                         goto usage;
 215
 216                 mtd = get_nand_dev_by_index(idx);
 217                 /* We don't care about size, or maxsize. */
 218                 if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize,
 219                                 MTD_DEV_TYPE_NAND, mtd->size)) {
 220                         puts("Offset or partition name expected\n");
 221                         return 1;
 222                 }
 223                 if (set_dev(idx)) {
 224                         puts("Offset or partition name expected\n");
 225                         return 1;
 226                 }
 227
 228                 if (idx != 0) {
 229                         puts("Partition not on first NAND device\n");
 230                         return 1;
 231                 }
 232
 233                 if (mtd->oobavail < ENV_OFFSET_SIZE) {
 234                         printf("Insufficient available OOB bytes:\n"
 235                                "%d OOB bytes available but %d required for "
 236                                "env.oob support\n",
 237                                mtd->oobavail, ENV_OFFSET_SIZE);
 238                         return 1;
 239                 }
 240
 241                 if ((addr & (mtd->erasesize - 1)) != 0) {
 242                         printf("Environment offset must be block-aligned\n");
 243                         return 1;
 244                 }
 245
 246                 ops.datbuf = NULL;
 247                 ops.mode = MTD_OOB_AUTO;
 248                 ops.ooboffs = 0;
 249                 ops.ooblen = ENV_OFFSET_SIZE;
 250                 ops.oobbuf = (void *) oob_buf;
 251
 252                 oob_buf[0] = ENV_OOB_MARKER;
 253                 oob_buf[1] = addr / mtd->erasesize;
 254
 255                 ret = mtd->write_oob(mtd, ENV_OFFSET_SIZE, &ops);
 256                 if (ret) {
 257                         printf("Error writing OOB block 0\n");
 258                         return ret;
 259                 }
 260
 261                 ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
 262                 if (ret) {
 263                         printf("Error reading env offset in OOB\n");
 264                         return ret;
 265                 }
 266
 267                 if (addr != nand_env_oob_offset) {
 268                         printf("Verification of env offset in OOB failed: "
 269                                "0x%08llx expected but got 0x%08lx\n",
 270                                (unsigned long long)addr, nand_env_oob_offset);
 271                         return 1;
 272                 }
 273         } else {
 274                 goto usage;
 275         }
 276
 277         return ret;
 278
 279 usage:
 280         return CMD_RET_USAGE;
 281 }
 282
 283 #endif
 284
 285 static void nand_print_and_set_info(int idx)
 286 {
 287         struct mtd_info *mtd;
 288         struct nand_chip *chip;
 289
 290         mtd = get_nand_dev_by_index(idx);
 291         if (!mtd)
 292                 return;
 293
 294         chip = mtd_to_nand(mtd);
 295         printf("Device %d: ", idx);
 296         if (chip->numchips > 1)
 297                 printf("%dx ", chip->numchips);
 298         printf("%s, sector size %u KiB\n",
 299                mtd->name, mtd->erasesize >> 10);
 300         printf("  Page size   %8d b\n", mtd->writesize);
 301         printf("  OOB size    %8d b\n", mtd->oobsize);
 302         printf("  Erase size  %8d b\n", mtd->erasesize);
 303         printf("  subpagesize %8d b\n", chip->subpagesize);
 304         printf("  options     0x%08x\n", chip->options);
 305         printf("  bbt options 0x%08x\n", chip->bbt_options);
 306
 307         /* Set geometry info */
 308         env_set_hex("nand_writesize", mtd->writesize);
 309         env_set_hex("nand_oobsize", mtd->oobsize);
 310         env_set_hex("nand_erasesize", mtd->erasesize);
 311 }
 312
 313 static int raw_access(struct mtd_info *mtd, ulong addr, loff_t off,
 314                       ulong count, int read, int no_verify)
 315 {
 316         int ret = 0;
 317
 318         while (count--) {
 319                 /* Raw access */
 320                 mtd_oob_ops_t ops = {
 321                         .datbuf = (u8 *)addr,
 322                         .oobbuf = ((u8 *)addr) + mtd->writesize,
 323                         .len = mtd->writesize,
 324                         .ooblen = mtd->oobsize,
 325                         .mode = MTD_OPS_RAW
 326                 };
 327
 328                 if (read) {
 329                         ret = mtd_read_oob(mtd, off, &ops);
 330                 } else {
 331                         ret = mtd_write_oob(mtd, off, &ops);
 332                         if (!ret && !no_verify)
 333                                 ret = nand_verify_page_oob(mtd, &ops, off);
 334                 }
 335
 336                 if (ret) {
 337                         printf("%s: error at offset %llx, ret %d\n",
 338                                 __func__, (long long)off, ret);
 339                         break;
 340                 }
 341
 342                 addr += mtd->writesize + mtd->oobsize;
 343                 off += mtd->writesize;
 344         }
 345
 346         return ret;
 347 }
 348
 349 /* Adjust a chip/partition size down for bad blocks so we don't
 350  * read/write past the end of a chip/partition by accident.
 351  */
 352 static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
 353 {
 354         /* We grab the nand info object here fresh because this is usually
 355          * called after arg_off_size() which can change the value of dev.
 356          */
 357         struct mtd_info *mtd = get_nand_dev_by_index(dev);
 358         loff_t maxoffset = offset + *size;
 359         int badblocks = 0;
 360
 361         /* count badblocks in NAND from offset to offset + size */
 362         for (; offset < maxoffset; offset += mtd->erasesize) {
 363                 if (nand_block_isbad(mtd, offset))
 364                         badblocks++;
 365         }
 366         /* adjust size if any bad blocks found */
 367         if (badblocks) {
 368                 *size -= badblocks * mtd->erasesize;
 369                 printf("size adjusted to 0x%llx (%d bad blocks)\n",
 370                        (unsigned long long)*size, badblocks);
 371         }
 372 }
 373
 374 static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 375 {
 376         int i, ret = 0;
 377         ulong addr;
 378         loff_t off, size, maxsize;
 379         char *cmd, *s;
 380         struct mtd_info *mtd;
 381 #ifdef CONFIG_SYS_NAND_QUIET
 382         int quiet = CONFIG_SYS_NAND_QUIET;
 383 #else
 384         int quiet = 0;
 385 #endif
 386         const char *quiet_str = env_get("quiet");
 387         int dev = nand_curr_device;
 388         int repeat = flag & CMD_FLAG_REPEAT;
 389
 390         /* at least two arguments please */
 391         if (argc < 2)
 392                 goto usage;
 393
 394         if (quiet_str)
 395                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 396
 397         cmd = argv[1];
 398
 399         /* Only "dump" is repeatable. */
 400         if (repeat && strcmp(cmd, "dump"))
 401                 return 0;
 402
 403         if (strcmp(cmd, "info") == 0) {
 404
 405                 putc('\n');
 406                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
 407                         nand_print_and_set_info(i);
 408                 return 0;
 409         }
 410
 411         if (strcmp(cmd, "device") == 0) {
 412                 if (argc < 3) {
 413                         putc('\n');
 414                         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
 415                                 puts("no devices available\n");
 416                         else
 417                                 nand_print_and_set_info(dev);
 418                         return 0;
 419                 }
 420
 421                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 422                 set_dev(dev);
 423
 424                 return 0;
 425         }
 426
 427 #ifdef CONFIG_ENV_OFFSET_OOB
 428         /* this command operates only on the first nand device */
 429         if (strcmp(cmd, "env.oob") == 0)
 430                 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
 431 #endif
 432
 433         /* The following commands operate on the current device, unless
 434          * overridden by a partition specifier.  Note that if somehow the
 435          * current device is invalid, it will have to be changed to a valid
 436          * one before these commands can run, even if a partition specifier
 437          * for another device is to be used.
 438          */
 439         mtd = get_nand_dev_by_index(dev);
 440         if (!mtd) {
 441                 puts("\nno devices available\n");
 442                 return 1;
 443         }
 444
 445         if (strcmp(cmd, "bad") == 0) {
 446                 printf("\nDevice %d bad blocks:\n", dev);
 447                 for (off = 0; off < mtd->size; off += mtd->erasesize)
 448                         if (nand_block_isbad(mtd, off))
 449                                 printf("  %08llx\n", (unsigned long long)off);
 450                 return 0;
 451         }
 452
 453         /*
 454          * Syntax is:
 455          *   0    1     2       3    4
 456          *   nand erase [clean] [off size]
 457          */
 458         if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
 459                 nand_erase_options_t opts;
 460                 /* "clean" at index 2 means request to write cleanmarker */
 461                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 462                 int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
 463                 int o = (clean || scrub_yes) ? 3 : 2;
 464                 int scrub = !strncmp(cmd, "scrub", 5);
 465                 int spread = 0;
 466                 int args = 2;
 467                 const char *scrub_warn =
 468                         "Warning: "
 469                         "scrub option will erase all factory set bad blocks!\n"
 470                         "         "
 471                         "There is no reliable way to recover them.\n"
 472                         "         "
 473                         "Use this command only for testing purposes if you\n"
 474                         "         "
 475                         "are sure of what you are doing!\n"
 476                         "\nReally scrub this NAND flash? <y/N>\n";
 477
 478                 if (cmd[5] != 0) {
 479                         if (!strcmp(&cmd[5], ".spread")) {
 480                                 spread = 1;
 481                         } else if (!strcmp(&cmd[5], ".part")) {
 482                                 args = 1;
 483                         } else if (!strcmp(&cmd[5], ".chip")) {
 484                                 args = 0;
 485                         } else {
 486                                 goto usage;
 487                         }
 488                 }
 489
 490                 /*
 491                  * Don't allow missing arguments to cause full chip/partition
 492                  * erases -- easy to do accidentally, e.g. with a misspelled
 493                  * variable name.
 494                  */
 495                 if (argc != o + args)
 496                         goto usage;
 497
 498                 printf("\nNAND %s: ", cmd);
 499                 /* skip first two or three arguments, look for offset and size */
 500                 if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size,
 501                                      &maxsize, MTD_DEV_TYPE_NAND,
 502                                      mtd->size) != 0)
 503                         return 1;
 504
 505                 if (set_dev(dev))
 506                         return 1;
 507
 508                 mtd = get_nand_dev_by_index(dev);
 509
 510                 memset(&opts, 0, sizeof(opts));
 511                 opts.offset = off;
 512                 opts.length = size;
 513                 opts.jffs2  = clean;
 514                 opts.quiet  = quiet;
 515                 opts.spread = spread;
 516
 517                 if (scrub) {
 518                         if (scrub_yes) {
 519                                 opts.scrub = 1;
 520                         } else {
 521                                 puts(scrub_warn);
 522                                 if (confirm_yesno()) {
 523                                         opts.scrub = 1;
 524                                 } else {
 525                                         puts("scrub aborted\n");
 526                                         return 1;
 527                                 }
 528                         }
 529                 }
 530                 ret = nand_erase_opts(mtd, &opts);
 531                 printf("%s\n", ret ? "ERROR" : "OK");
 532
 533                 return ret == 0 ? 0 : 1;
 534         }
 535
 536         if (strncmp(cmd, "dump", 4) == 0) {
 537                 if (argc < 3)
 538                         goto usage;
 539
 540                 off = (int)simple_strtoul(argv[2], NULL, 16);
 541                 ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat);
 542
 543                 return ret == 0 ? 1 : 0;
 544         }
 545
 546         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 547                 size_t rwsize;
 548                 ulong pagecount = 1;
 549                 int read;
 550                 int raw = 0;
 551                 int no_verify = 0;
 552
 553                 if (argc < 4)
 554                         goto usage;
 555
 556                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 557
 558                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 559                 printf("\nNAND %s: ", read ? "read" : "write");
 560
 561                 s = strchr(cmd, '.');
 562
 563                 if (s && !strncmp(s, ".raw", 4)) {
 564                         raw = 1;
 565
 566                         if (!strcmp(s, ".raw.noverify"))
 567                                 no_verify = 1;
 568
 569                         if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
 570                                         MTD_DEV_TYPE_NAND,
 571                                         mtd->size))
 572                                 return 1;
 573
 574                         if (set_dev(dev))
 575                                 return 1;
 576
 577                         mtd = get_nand_dev_by_index(dev);
 578
 579                         if (argc > 4 && !str2long(argv[4], &pagecount)) {
 580                                 printf("'%s' is not a number\n", argv[4]);
 581                                 return 1;
 582                         }
 583
 584                         if (pagecount * mtd->writesize > size) {
 585                                 puts("Size exceeds partition or device limit\n");
 586                                 return -1;
 587                         }
 588
 589                         rwsize = pagecount * (mtd->writesize + mtd->oobsize);
 590                 } else {
 591                         if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
 592                                              &size, &maxsize,
 593                                              MTD_DEV_TYPE_NAND,
 594                                              mtd->size) != 0)
 595                                 return 1;
 596
 597                         if (set_dev(dev))
 598                                 return 1;
 599
 600                         /* size is unspecified */
 601                         if (argc < 5)
 602                                 adjust_size_for_badblocks(&size, off, dev);
 603                         rwsize = size;
 604                 }
 605
 606                 mtd = get_nand_dev_by_index(dev);
 607
 608                 if (!s || !strcmp(s, ".jffs2") ||
 609                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
 610                         if (read)
 611                                 ret = nand_read_skip_bad(mtd, off, &rwsize,
 612                                                          NULL, maxsize,
 613                                                          (u_char *)addr);
 614                         else
 615                                 ret = nand_write_skip_bad(mtd, off, &rwsize,
 616                                                           NULL, maxsize,
 617                                                           (u_char *)addr,
 618                                                           WITH_WR_VERIFY);
 619 #ifdef CONFIG_CMD_NAND_TRIMFFS
 620                 } else if (!strcmp(s, ".trimffs")) {
 621                         if (read) {
 622                                 printf("Unknown nand command suffix '%s'\n", s);
 623                                 return 1;
 624                         }
 625                         ret = nand_write_skip_bad(mtd, off, &rwsize, NULL,
 626                                                 maxsize, (u_char *)addr,
 627                                                 WITH_DROP_FFS | WITH_WR_VERIFY);
 628 #endif
 629                 } else if (!strcmp(s, ".oob")) {
 630                         /* out-of-band data */
 631                         mtd_oob_ops_t ops = {
 632                                 .oobbuf = (u8 *)addr,
 633                                 .ooblen = rwsize,
 634                                 .mode = MTD_OPS_RAW
 635                         };
 636
 637                         if (read)
 638                                 ret = mtd_read_oob(mtd, off, &ops);
 639                         else
 640                                 ret = mtd_write_oob(mtd, off, &ops);
 641                 } else if (raw) {
 642                         ret = raw_access(mtd, addr, off, pagecount, read,
 643                                          no_verify);
 644                 } else {
 645                         printf("Unknown nand command suffix '%s'.\n", s);
 646                         return 1;
 647                 }
 648
 649                 printf(" %zu bytes %s: %s\n", rwsize,
 650                        read ? "read" : "written", ret ? "ERROR" : "OK");
 651
 652                 return ret == 0 ? 0 : 1;
 653         }
 654
 655 #ifdef CONFIG_CMD_NAND_TORTURE
 656         if (strcmp(cmd, "torture") == 0) {
 657                 loff_t endoff;
 658                 unsigned int failed = 0, passed = 0;
 659
 660                 if (argc < 3)
 661                         goto usage;
 662
 663                 if (!str2off(argv[2], &off)) {
 664                         puts("Offset is not a valid number\n");
 665                         return 1;
 666                 }
 667
 668                 size = mtd->erasesize;
 669                 if (argc > 3) {
 670                         if (!str2off(argv[3], &size)) {
 671                                 puts("Size is not a valid number\n");
 672                                 return 1;
 673                         }
 674                 }
 675
 676                 endoff = off + size;
 677                 if (endoff > mtd->size) {
 678                         puts("Arguments beyond end of NAND\n");
 679                         return 1;
 680                 }
 681
 682                 off = round_down(off, mtd->erasesize);
 683                 endoff = round_up(endoff, mtd->erasesize);
 684                 size = endoff - off;
 685                 printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n",
 686                        dev, off, size, mtd->erasesize);
 687                 while (off < endoff) {
 688                         ret = nand_torture(mtd, off);
 689                         if (ret) {
 690                                 failed++;
 691                                 printf("  block at 0x%llx failed\n", off);
 692                         } else {
 693                                 passed++;
 694                         }
 695                         off += mtd->erasesize;
 696                 }
 697                 printf(" Passed: %u, failed: %u\n", passed, failed);
 698                 return failed != 0;
 699         }
 700 #endif
 701
 702         if (strcmp(cmd, "markbad") == 0) {
 703                 argc -= 2;
 704                 argv += 2;
 705
 706                 if (argc <= 0)
 707                         goto usage;
 708
 709                 while (argc > 0) {
 710                         addr = simple_strtoul(*argv, NULL, 16);
 711
 712                         if (mtd_block_markbad(mtd, addr)) {
 713                                 printf("block 0x%08lx NOT marked "
 714                                         "as bad! ERROR %d\n",
 715                                         addr, ret);
 716                                 ret = 1;
 717                         } else {
 718                                 printf("block 0x%08lx successfully "
 719                                         "marked as bad\n",
 720                                         addr);
 721                         }
 722                         --argc;
 723                         ++argv;
 724                 }
 725                 return ret;
 726         }
 727
 728         if (strcmp(cmd, "biterr") == 0) {
 729                 /* todo */
 730                 return 1;
 731         }
 732
 733 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 734         if (strcmp(cmd, "lock") == 0) {
 735                 int tight = 0;
 736                 int status = 0;
 737                 if (argc == 3) {
 738                         if (!strcmp("tight", argv[2]))
 739                                 tight = 1;
 740                         if (!strcmp("status", argv[2]))
 741                                 status = 1;
 742                 }
 743                 if (status) {
 744                         do_nand_status(mtd);
 745                 } else {
 746                         if (!nand_lock(mtd, tight)) {
 747                                 puts("NAND flash successfully locked\n");
 748                         } else {
 749                                 puts("Error locking NAND flash\n");
 750                                 return 1;
 751                         }
 752                 }
 753                 return 0;
 754         }
 755
 756         if (strncmp(cmd, "unlock", 5) == 0) {
 757                 int allexcept = 0;
 758
 759                 s = strchr(cmd, '.');
 760
 761                 if (s && !strcmp(s, ".allexcept"))
 762                         allexcept = 1;
 763
 764                 if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
 765                                      &maxsize, MTD_DEV_TYPE_NAND,
 766                                      mtd->size) < 0)
 767                         return 1;
 768
 769                 if (set_dev(dev))
 770                         return 1;
 771
 772                 mtd = get_nand_dev_by_index(dev);
 773
 774                 if (!nand_unlock(mtd, off, size, allexcept)) {
 775                         puts("NAND flash successfully unlocked\n");
 776                 } else {
 777                         puts("Error unlocking NAND flash, "
 778                              "write and erase will probably fail\n");
 779                         return 1;
 780                 }
 781                 return 0;
 782         }
 783 #endif
 784
 785 usage:
 786         return CMD_RET_USAGE;
 787 }
 788
 789 #ifdef CONFIG_SYS_LONGHELP
 790 static char nand_help_text[] =
 791         "info - show available NAND devices\n"
 792         "nand device [dev] - show or set current device\n"
 793         "nand read - addr off|partition size\n"
 794         "nand write - addr off|partition size\n"
 795         "    read/write 'size' bytes starting at offset 'off'\n"
 796         "    to/from memory address 'addr', skipping bad blocks.\n"
 797         "nand read.raw - addr off|partition [count]\n"
 798         "nand write.raw[.noverify] - addr off|partition [count]\n"
 799         "    Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
 800 #ifdef CONFIG_CMD_NAND_TRIMFFS
 801         "nand write.trimffs - addr off|partition size\n"
 802         "    write 'size' bytes starting at offset 'off' from memory address\n"
 803         "    'addr', skipping bad blocks and dropping any pages at the end\n"
 804         "    of eraseblocks that contain only 0xFF\n"
 805 #endif
 806         "nand erase[.spread] [clean] off size - erase 'size' bytes "
 807         "from offset 'off'\n"
 808         "    With '.spread', erase enough for given file size, otherwise,\n"
 809         "    'size' includes skipped bad blocks.\n"
 810         "nand erase.part [clean] partition - erase entire mtd partition'\n"
 811         "nand erase.chip [clean] - erase entire chip'\n"
 812         "nand bad - show bad blocks\n"
 813         "nand dump[.oob] off - dump page\n"
 814 #ifdef CONFIG_CMD_NAND_TORTURE
 815         "nand torture off - torture one block at offset\n"
 816         "nand torture off [size] - torture blocks from off to off+size\n"
 817 #endif
 818         "nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
 819         "    really clean NAND erasing bad blocks (UNSAFE)\n"
 820         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 821         "nand biterr off - make a bit error at offset (UNSAFE)"
 822 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 823         "\n"
 824         "nand lock [tight] [status]\n"
 825         "    bring nand to lock state or display locked pages\n"
 826         "nand unlock[.allexcept] [offset] [size] - unlock section"
 827 #endif
 828 #ifdef CONFIG_ENV_OFFSET_OOB
 829         "\n"
 830         "nand env.oob - environment offset in OOB of block 0 of"
 831         "    first device.\n"
 832         "nand env.oob set off|partition - set enviromnent offset\n"
 833         "nand env.oob get - get environment offset"
 834 #endif
 835         "";
 836 #endif
 837
 838 U_BOOT_CMD(
 839         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 840         "NAND sub-system", nand_help_text
 841 );
 842
 843 static int nand_load_image(cmd_tbl_t *cmdtp, struct mtd_info *mtd,
 844                            ulong offset, ulong addr, char *cmd)
 845 {
 846         int r;
 847         char *s;
 848         size_t cnt;
 849 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 850         image_header_t *hdr;
 851 #endif
 852 #if defined(CONFIG_FIT)
 853         const void *fit_hdr = NULL;
 854 #endif
 855
 856         s = strchr(cmd, '.');
 857         if (s != NULL &&
 858             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 859                 printf("Unknown nand load suffix '%s'\n", s);
 860                 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
 861                 return 1;
 862         }
 863
 864         printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset);
 865
 866         cnt = mtd->writesize;
 867         r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
 868                                (u_char *)addr);
 869         if (r) {
 870                 puts("** Read error\n");
 871                 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
 872                 return 1;
 873         }
 874         bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
 875
 876         switch (genimg_get_format ((void *)addr)) {
 877 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 878         case IMAGE_FORMAT_LEGACY:
 879                 hdr = (image_header_t *)addr;
 880
 881                 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
 882                 image_print_contents (hdr);
 883
 884                 cnt = image_get_image_size (hdr);
 885                 break;
 886 #endif
 887 #if defined(CONFIG_FIT)
 888         case IMAGE_FORMAT_FIT:
 889                 fit_hdr = (const void *)addr;
 890                 puts ("Fit image detected...\n");
 891
 892                 cnt = fit_get_size (fit_hdr);
 893                 break;
 894 #endif
 895         default:
 896                 bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
 897                 puts ("** Unknown image type\n");
 898                 return 1;
 899         }
 900         bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
 901
 902         r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
 903                                (u_char *)addr);
 904         if (r) {
 905                 puts("** Read error\n");
 906                 bootstage_error(BOOTSTAGE_ID_NAND_READ);
 907                 return 1;
 908         }
 909         bootstage_mark(BOOTSTAGE_ID_NAND_READ);
 910
 911 #if defined(CONFIG_FIT)
 912         /* This cannot be done earlier, we need complete FIT image in RAM first */
 913         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 914                 if (!fit_check_format (fit_hdr)) {
 915                         bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
 916                         puts ("** Bad FIT image format\n");
 917                         return 1;
 918                 }
 919                 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
 920                 fit_print_contents (fit_hdr);
 921         }
 922 #endif
 923
 924         /* Loading ok, update default load address */
 925
 926         load_addr = addr;
 927
 928         return bootm_maybe_autostart(cmdtp, cmd);
 929 }
 930
 931 static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc,
 932                        char * const argv[])
 933 {
 934         char *boot_device = NULL;
 935         int idx;
 936         ulong addr, offset = 0;
 937         struct mtd_info *mtd;
 938 #if defined(CONFIG_CMD_MTDPARTS)
 939         struct mtd_device *dev;
 940         struct part_info *part;
 941         u8 pnum;
 942
 943         if (argc >= 2) {
 944                 char *p = (argc == 2) ? argv[1] : argv[2];
 945                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 946                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 947                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 948                                 puts("Not a NAND device\n");
 949                                 return 1;
 950                         }
 951                         if (argc > 3)
 952                                 goto usage;
 953                         if (argc == 3)
 954                                 addr = simple_strtoul(argv[1], NULL, 16);
 955                         else
 956                                 addr = CONFIG_SYS_LOAD_ADDR;
 957
 958                         mtd = get_nand_dev_by_index(dev->id->num);
 959                         return nand_load_image(cmdtp, mtd, part->offset,
 960                                                addr, argv[0]);
 961                 }
 962         }
 963 #endif
 964
 965         bootstage_mark(BOOTSTAGE_ID_NAND_PART);
 966         switch (argc) {
 967         case 1:
 968                 addr = CONFIG_SYS_LOAD_ADDR;
 969                 boot_device = env_get("bootdevice");
 970                 break;
 971         case 2:
 972                 addr = simple_strtoul(argv[1], NULL, 16);
 973                 boot_device = env_get("bootdevice");
 974                 break;
 975         case 3:
 976                 addr = simple_strtoul(argv[1], NULL, 16);
 977                 boot_device = argv[2];
 978                 break;
 979         case 4:
 980                 addr = simple_strtoul(argv[1], NULL, 16);
 981                 boot_device = argv[2];
 982                 offset = simple_strtoul(argv[3], NULL, 16);
 983                 break;
 984         default:
 985 #if defined(CONFIG_CMD_MTDPARTS)
 986 usage:
 987 #endif
 988                 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
 989                 return CMD_RET_USAGE;
 990         }
 991         bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
 992
 993         if (!boot_device) {
 994                 puts("\n** No boot device **\n");
 995                 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
 996                 return 1;
 997         }
 998         bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
 999
1000         idx = simple_strtoul(boot_device, NULL, 16);
1001
1002         mtd = get_nand_dev_by_index(idx);
1003         if (!mtd) {
1004                 printf("\n** Device %d not available\n", idx);
1005                 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
1006                 return 1;
1007         }
1008         bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
1009
1010         return nand_load_image(cmdtp, mtd, offset, addr, argv[0]);
1011 }
1012
1013 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
1014         "boot from NAND device",
1015         "[partition] | [[[loadAddr] dev] offset]"
1016 );