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