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