common/cmd_nand.c

   1 /*
   2  * Driver for NAND support, Rick Bronson
   3  * borrowed heavily from:
   4  * (c) 1999 Machine Vision Holdings, Inc.
   5  * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
   6  *
   7  * Ported 'dynenv' to 'nand env.oob' command
   8  * (C) 2010 Nanometrics, Inc.
   9  * 'dynenv' -- Dynamic environment offset in NAND OOB
  10  * (C) Copyright 2006-2007 OpenMoko, Inc.
  11  * Added 16-bit nand support
  12  * (C) 2004 Texas Instruments
  13  *
  14  * Copyright 2010, 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 <watchdog.h>
  26 #include <malloc.h>
  27 #include <asm/byteorder.h>
  28 #include <jffs2/jffs2.h>
  29 #include <nand.h>
  30
  31 #if defined(CONFIG_CMD_MTDPARTS)
  32
  33 /* partition handling routines */
  34 int mtdparts_init(void);
  35 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
  36 int find_dev_and_part(const char *id, struct mtd_device **dev,
  37                       u8 *part_num, struct part_info **part);
  38 #endif
  39
  40 static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat)
  41 {
  42         int i;
  43         u_char *datbuf, *oobbuf, *p;
  44         static loff_t last;
  45         int ret = 0;
  46
  47         if (repeat)
  48                 off = last + nand->writesize;
  49
  50         last = off;
  51
  52         datbuf = memalign(ARCH_DMA_MINALIGN, nand->writesize);
  53         if (!datbuf) {
  54                 puts("No memory for page buffer\n");
  55                 return 1;
  56         }
  57
  58         oobbuf = memalign(ARCH_DMA_MINALIGN, nand->oobsize);
  59         if (!oobbuf) {
  60                 puts("No memory for page buffer\n");
  61                 ret = 1;
  62                 goto free_dat;
  63         }
  64         off &= ~(nand->writesize - 1);
  65         loff_t addr = (loff_t) off;
  66         struct mtd_oob_ops ops;
  67         memset(&ops, 0, sizeof(ops));
  68         ops.datbuf = datbuf;
  69         ops.oobbuf = oobbuf;
  70         ops.len = nand->writesize;
  71         ops.ooblen = nand->oobsize;
  72         ops.mode = MTD_OPS_RAW;
  73         i = mtd_read_oob(nand, addr, &ops);
  74         if (i < 0) {
  75                 printf("Error (%d) reading page %08lx\n", i, off);
  76                 ret = 1;
  77                 goto free_all;
  78         }
  79         printf("Page %08lx dump:\n", off);
  80
  81         if (!only_oob) {
  82                 i = nand->writesize >> 4;
  83                 p = datbuf;
  84
  85                 while (i--) {
  86                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
  87                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
  88                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
  89                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
  90                                p[15]);
  91                         p += 16;
  92                 }
  93         }
  94
  95         puts("OOB:\n");
  96         i = nand->oobsize >> 3;
  97         p = oobbuf;
  98         while (i--) {
  99                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
 100                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 101                 p += 8;
 102         }
 103
 104 free_all:
 105         free(oobbuf);
 106 free_dat:
 107         free(datbuf);
 108
 109         return ret;
 110 }
 111
 112 /* ------------------------------------------------------------------------- */
 113
 114 static int set_dev(int dev)
 115 {
 116         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
 117             !nand_info[dev].name) {
 118                 puts("No such device\n");
 119                 return -1;
 120         }
 121
 122         if (nand_curr_device == dev)
 123                 return 0;
 124
 125         printf("Device %d: %s", dev, nand_info[dev].name);
 126         puts("... is now current device\n");
 127         nand_curr_device = dev;
 128
 129 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 130         board_nand_select_device(nand_info[dev].priv, dev);
 131 #endif
 132
 133         return 0;
 134 }
 135
 136 static inline int str2off(const char *p, loff_t *num)
 137 {
 138         char *endptr;
 139
 140         *num = simple_strtoull(p, &endptr, 16);
 141         return *p != '\0' && *endptr == '\0';
 142 }
 143
 144 static inline int str2long(const char *p, ulong *num)
 145 {
 146         char *endptr;
 147
 148         *num = simple_strtoul(p, &endptr, 16);
 149         return *p != '\0' && *endptr == '\0';
 150 }
 151
 152 static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size,
 153                 loff_t *maxsize)
 154 {
 155 #ifdef CONFIG_CMD_MTDPARTS
 156         struct mtd_device *dev;
 157         struct part_info *part;
 158         u8 pnum;
 159         int ret;
 160
 161         ret = mtdparts_init();
 162         if (ret)
 163                 return ret;
 164
 165         ret = find_dev_and_part(partname, &dev, &pnum, &part);
 166         if (ret)
 167                 return ret;
 168
 169         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 170                 puts("not a NAND device\n");
 171                 return -1;
 172         }
 173
 174         *off = part->offset;
 175         *size = part->size;
 176         *maxsize = part->size;
 177         *idx = dev->id->num;
 178
 179         ret = set_dev(*idx);
 180         if (ret)
 181                 return ret;
 182
 183         return 0;
 184 #else
 185         puts("offset is not a number\n");
 186         return -1;
 187 #endif
 188 }
 189
 190 static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *size,
 191                 loff_t *maxsize)
 192 {
 193         if (!str2off(arg, off))
 194                 return get_part(arg, idx, off, size, maxsize);
 195
 196         if (*off >= nand_info[*idx].size) {
 197                 puts("Offset exceeds device limit\n");
 198                 return -1;
 199         }
 200
 201         *maxsize = nand_info[*idx].size - *off;
 202         *size = *maxsize;
 203         return 0;
 204 }
 205
 206 static int arg_off_size(int argc, char *const argv[], int *idx,
 207                         loff_t *off, loff_t *size, loff_t *maxsize)
 208 {
 209         int ret;
 210
 211         if (argc == 0) {
 212                 *off = 0;
 213                 *size = nand_info[*idx].size;
 214                 *maxsize = *size;
 215                 goto print;
 216         }
 217
 218         ret = arg_off(argv[0], idx, off, size, maxsize);
 219         if (ret)
 220                 return ret;
 221
 222         if (argc == 1)
 223                 goto print;
 224
 225         if (!str2off(argv[1], size)) {
 226                 printf("'%s' is not a number\n", argv[1]);
 227                 return -1;
 228         }
 229
 230         if (*size > *maxsize) {
 231                 puts("Size exceeds partition or device limit\n");
 232                 return -1;
 233         }
 234
 235 print:
 236         printf("device %d ", *idx);
 237         if (*size == nand_info[*idx].size)
 238                 puts("whole chip\n");
 239         else
 240                 printf("offset 0x%llx, size 0x%llx\n",
 241                        (unsigned long long)*off, (unsigned long long)*size);
 242         return 0;
 243 }
 244
 245 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 246 static void print_status(ulong start, ulong end, ulong erasesize, int status)
 247 {
 248         /*
 249          * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is
 250          * not the same as others.  Instead of bit 1 being lock, it is
 251          * #lock_tight. To make the driver support either format, ignore bit 1
 252          * and use only bit 0 and bit 2.
 253          */
 254         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
 255                 start,
 256                 end - 1,
 257                 (end - start) / erasesize,
 258                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
 259                 (!(status & NAND_LOCK_STATUS_UNLOCK) ?  "LOCK " : ""),
 260                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
 261 }
 262
 263 static void do_nand_status(nand_info_t *nand)
 264 {
 265         ulong block_start = 0;
 266         ulong off;
 267         int last_status = -1;
 268
 269         struct nand_chip *nand_chip = nand->priv;
 270         /* check the WP bit */
 271         nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
 272         printf("device is %swrite protected\n",
 273                 (nand_chip->read_byte(nand) & 0x80 ?
 274                 "NOT " : ""));
 275
 276         for (off = 0; off < nand->size; off += nand->erasesize) {
 277                 int s = nand_get_lock_status(nand, off);
 278
 279                 /* print message only if status has changed */
 280                 if (s != last_status && off != 0) {
 281                         print_status(block_start, off, nand->erasesize,
 282                                         last_status);
 283                         block_start = off;
 284                 }
 285                 last_status = s;
 286         }
 287         /* Print the last block info */
 288         print_status(block_start, off, nand->erasesize, last_status);
 289 }
 290 #endif
 291
 292 #ifdef CONFIG_ENV_OFFSET_OOB
 293 unsigned long nand_env_oob_offset;
 294
 295 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
 296 {
 297         int ret;
 298         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
 299         nand_info_t *nand = &nand_info[0];
 300         char *cmd = argv[1];
 301
 302         if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !nand->name) {
 303                 puts("no devices available\n");
 304                 return 1;
 305         }
 306
 307         set_dev(0);
 308
 309         if (!strcmp(cmd, "get")) {
 310                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 311                 if (ret)
 312                         return 1;
 313
 314                 printf("0x%08lx\n", nand_env_oob_offset);
 315         } else if (!strcmp(cmd, "set")) {
 316                 loff_t addr;
 317                 loff_t maxsize;
 318                 struct mtd_oob_ops ops;
 319                 int idx = 0;
 320
 321                 if (argc < 3)
 322                         goto usage;
 323
 324                 /* We don't care about size, or maxsize. */
 325                 if (arg_off(argv[2], &idx, &addr, &maxsize, &maxsize)) {
 326                         puts("Offset or partition name expected\n");
 327                         return 1;
 328                 }
 329
 330                 if (idx != 0) {
 331                         puts("Partition not on first NAND device\n");
 332                         return 1;
 333                 }
 334
 335                 if (nand->oobavail < ENV_OFFSET_SIZE) {
 336                         printf("Insufficient available OOB bytes:\n"
 337                                "%d OOB bytes available but %d required for "
 338                                "env.oob support\n",
 339                                nand->oobavail, ENV_OFFSET_SIZE);
 340                         return 1;
 341                 }
 342
 343                 if ((addr & (nand->erasesize - 1)) != 0) {
 344                         printf("Environment offset must be block-aligned\n");
 345                         return 1;
 346                 }
 347
 348                 ops.datbuf = NULL;
 349                 ops.mode = MTD_OOB_AUTO;
 350                 ops.ooboffs = 0;
 351                 ops.ooblen = ENV_OFFSET_SIZE;
 352                 ops.oobbuf = (void *) oob_buf;
 353
 354                 oob_buf[0] = ENV_OOB_MARKER;
 355                 oob_buf[1] = addr / nand->erasesize;
 356
 357                 ret = nand->write_oob(nand, ENV_OFFSET_SIZE, &ops);
 358                 if (ret) {
 359                         printf("Error writing OOB block 0\n");
 360                         return ret;
 361                 }
 362
 363                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 364                 if (ret) {
 365                         printf("Error reading env offset in OOB\n");
 366                         return ret;
 367                 }
 368
 369                 if (addr != nand_env_oob_offset) {
 370                         printf("Verification of env offset in OOB failed: "
 371                                "0x%08llx expected but got 0x%08lx\n",
 372                                (unsigned long long)addr, nand_env_oob_offset);
 373                         return 1;
 374                 }
 375         } else {
 376                 goto usage;
 377         }
 378
 379         return ret;
 380
 381 usage:
 382         return CMD_RET_USAGE;
 383 }
 384
 385 #endif
 386
 387 static void nand_print_and_set_info(int idx)
 388 {
 389         nand_info_t *nand = &nand_info[idx];
 390         struct nand_chip *chip = nand->priv;
 391
 392         printf("Device %d: ", idx);
 393         if (chip->numchips > 1)
 394                 printf("%dx ", chip->numchips);
 395         printf("%s, sector size %u KiB\n",
 396                nand->name, nand->erasesize >> 10);
 397         printf("  Page size   %8d b\n", nand->writesize);
 398         printf("  OOB size    %8d b\n", nand->oobsize);
 399         printf("  Erase size  %8d b\n", nand->erasesize);
 400         printf("  subpagesize %8d b\n", chip->subpagesize);
 401         printf("  options     0x%8x\n", chip->options);
 402         printf("  bbt options 0x%8x\n", chip->bbt_options);
 403
 404         /* Set geometry info */
 405         setenv_hex("nand_writesize", nand->writesize);
 406         setenv_hex("nand_oobsize", nand->oobsize);
 407         setenv_hex("nand_erasesize", nand->erasesize);
 408 }
 409
 410 static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count,
 411                         int read)
 412 {
 413         int ret = 0;
 414
 415         while (count--) {
 416                 /* Raw access */
 417                 mtd_oob_ops_t ops = {
 418                         .datbuf = (u8 *)addr,
 419                         .oobbuf = ((u8 *)addr) + nand->writesize,
 420                         .len = nand->writesize,
 421                         .ooblen = nand->oobsize,
 422                         .mode = MTD_OPS_RAW
 423                 };
 424
 425                 if (read) {
 426                         ret = mtd_read_oob(nand, off, &ops);
 427                 } else {
 428                         ret = mtd_write_oob(nand, off, &ops);
 429                         if (!ret)
 430                                 ret = nand_verify_page_oob(nand, &ops, off);
 431                 }
 432
 433                 if (ret) {
 434                         printf("%s: error at offset %llx, ret %d\n",
 435                                 __func__, (long long)off, ret);
 436                         break;
 437                 }
 438
 439                 addr += nand->writesize + nand->oobsize;
 440                 off += nand->writesize;
 441         }
 442
 443         return ret;
 444 }
 445
 446 /* Adjust a chip/partition size down for bad blocks so we don't
 447  * read/write past the end of a chip/partition by accident.
 448  */
 449 static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
 450 {
 451         /* We grab the nand info object here fresh because this is usually
 452          * called after arg_off_size() which can change the value of dev.
 453          */
 454         nand_info_t *nand = &nand_info[dev];
 455         loff_t maxoffset = offset + *size;
 456         int badblocks = 0;
 457
 458         /* count badblocks in NAND from offset to offset + size */
 459         for (; offset < maxoffset; offset += nand->erasesize) {
 460                 if (nand_block_isbad(nand, offset))
 461                         badblocks++;
 462         }
 463         /* adjust size if any bad blocks found */
 464         if (badblocks) {
 465                 *size -= badblocks * nand->erasesize;
 466                 printf("size adjusted to 0x%llx (%d bad blocks)\n",
 467                        (unsigned long long)*size, badblocks);
 468         }
 469 }
 470
 471 static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 472 {
 473         int i, ret = 0;
 474         ulong addr;
 475         loff_t off, size, maxsize;
 476         char *cmd, *s;
 477         nand_info_t *nand;
 478 #ifdef CONFIG_SYS_NAND_QUIET
 479         int quiet = CONFIG_SYS_NAND_QUIET;
 480 #else
 481         int quiet = 0;
 482 #endif
 483         const char *quiet_str = getenv("quiet");
 484         int dev = nand_curr_device;
 485         int repeat = flag & CMD_FLAG_REPEAT;
 486
 487         /* at least two arguments please */
 488         if (argc < 2)
 489                 goto usage;
 490
 491         if (quiet_str)
 492                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 493
 494         cmd = argv[1];
 495
 496         /* Only "dump" is repeatable. */
 497         if (repeat && strcmp(cmd, "dump"))
 498                 return 0;
 499
 500         if (strcmp(cmd, "info") == 0) {
 501
 502                 putc('\n');
 503                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
 504                         if (nand_info[i].name)
 505                                 nand_print_and_set_info(i);
 506                 }
 507                 return 0;
 508         }
 509
 510         if (strcmp(cmd, "device") == 0) {
 511                 if (argc < 3) {
 512                         putc('\n');
 513                         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
 514                                 puts("no devices available\n");
 515                         else
 516                                 nand_print_and_set_info(dev);
 517                         return 0;
 518                 }
 519
 520                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 521                 set_dev(dev);
 522
 523                 return 0;
 524         }
 525
 526 #ifdef CONFIG_ENV_OFFSET_OOB
 527         /* this command operates only on the first nand device */
 528         if (strcmp(cmd, "env.oob") == 0)
 529                 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
 530 #endif
 531
 532         /* The following commands operate on the current device, unless
 533          * overridden by a partition specifier.  Note that if somehow the
 534          * current device is invalid, it will have to be changed to a valid
 535          * one before these commands can run, even if a partition specifier
 536          * for another device is to be used.
 537          */
 538         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
 539             !nand_info[dev].name) {
 540                 puts("\nno devices available\n");
 541                 return 1;
 542         }
 543         nand = &nand_info[dev];
 544
 545         if (strcmp(cmd, "bad") == 0) {
 546                 printf("\nDevice %d bad blocks:\n", dev);
 547                 for (off = 0; off < nand->size; off += nand->erasesize)
 548                         if (nand_block_isbad(nand, off))
 549                                 printf("  %08llx\n", (unsigned long long)off);
 550                 return 0;
 551         }
 552
 553         /*
 554          * Syntax is:
 555          *   0    1     2       3    4
 556          *   nand erase [clean] [off size]
 557          */
 558         if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
 559                 nand_erase_options_t opts;
 560                 /* "clean" at index 2 means request to write cleanmarker */
 561                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 562                 int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
 563                 int o = (clean || scrub_yes) ? 3 : 2;
 564                 int scrub = !strncmp(cmd, "scrub", 5);
 565                 int spread = 0;
 566                 int args = 2;
 567                 const char *scrub_warn =
 568                         "Warning: "
 569                         "scrub option will erase all factory set bad blocks!\n"
 570                         "         "
 571                         "There is no reliable way to recover them.\n"
 572                         "         "
 573                         "Use this command only for testing purposes if you\n"
 574                         "         "
 575                         "are sure of what you are doing!\n"
 576                         "\nReally scrub this NAND flash? <y/N>\n";
 577
 578                 if (cmd[5] != 0) {
 579                         if (!strcmp(&cmd[5], ".spread")) {
 580                                 spread = 1;
 581                         } else if (!strcmp(&cmd[5], ".part")) {
 582                                 args = 1;
 583                         } else if (!strcmp(&cmd[5], ".chip")) {
 584                                 args = 0;
 585                         } else {
 586                                 goto usage;
 587                         }
 588                 }
 589
 590                 /*
 591                  * Don't allow missing arguments to cause full chip/partition
 592                  * erases -- easy to do accidentally, e.g. with a misspelled
 593                  * variable name.
 594                  */
 595                 if (argc != o + args)
 596                         goto usage;
 597
 598                 printf("\nNAND %s: ", cmd);
 599                 /* skip first two or three arguments, look for offset and size */
 600                 if (arg_off_size(argc - o, argv + o, &dev, &off, &size,
 601                                  &maxsize) != 0)
 602                         return 1;
 603
 604                 nand = &nand_info[dev];
 605
 606                 memset(&opts, 0, sizeof(opts));
 607                 opts.offset = off;
 608                 opts.length = size;
 609                 opts.jffs2  = clean;
 610                 opts.quiet  = quiet;
 611                 opts.spread = spread;
 612
 613                 if (scrub) {
 614                         if (scrub_yes) {
 615                                 opts.scrub = 1;
 616                         } else {
 617                                 puts(scrub_warn);
 618                                 if (confirm_yesno()) {
 619                                         opts.scrub = 1;
 620                                 } else {
 621                                         puts("scrub aborted\n");
 622                                         return 1;
 623                                 }
 624                         }
 625                 }
 626                 ret = nand_erase_opts(nand, &opts);
 627                 printf("%s\n", ret ? "ERROR" : "OK");
 628
 629                 return ret == 0 ? 0 : 1;
 630         }
 631
 632         if (strncmp(cmd, "dump", 4) == 0) {
 633                 if (argc < 3)
 634                         goto usage;
 635
 636                 off = (int)simple_strtoul(argv[2], NULL, 16);
 637                 ret = nand_dump(nand, off, !strcmp(&cmd[4], ".oob"), repeat);
 638
 639                 return ret == 0 ? 1 : 0;
 640         }
 641
 642         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 643                 size_t rwsize;
 644                 ulong pagecount = 1;
 645                 int read;
 646                 int raw = 0;
 647
 648                 if (argc < 4)
 649                         goto usage;
 650
 651                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 652
 653                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 654                 printf("\nNAND %s: ", read ? "read" : "write");
 655
 656                 s = strchr(cmd, '.');
 657
 658                 if (s && !strcmp(s, ".raw")) {
 659                         raw = 1;
 660
 661                         if (arg_off(argv[3], &dev, &off, &size, &maxsize))
 662                                 return 1;
 663
 664                         nand = &nand_info[dev];
 665
 666                         if (argc > 4 && !str2long(argv[4], &pagecount)) {
 667                                 printf("'%s' is not a number\n", argv[4]);
 668                                 return 1;
 669                         }
 670
 671                         if (pagecount * nand->writesize > size) {
 672                                 puts("Size exceeds partition or device limit\n");
 673                                 return -1;
 674                         }
 675
 676                         rwsize = pagecount * (nand->writesize + nand->oobsize);
 677                 } else {
 678                         if (arg_off_size(argc - 3, argv + 3, &dev,
 679                                                 &off, &size, &maxsize) != 0)
 680                                 return 1;
 681
 682                         /* size is unspecified */
 683                         if (argc < 5)
 684                                 adjust_size_for_badblocks(&size, off, dev);
 685                         rwsize = size;
 686                 }
 687
 688                 nand = &nand_info[dev];
 689
 690                 if (!s || !strcmp(s, ".jffs2") ||
 691                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
 692                         if (read)
 693                                 ret = nand_read_skip_bad(nand, off, &rwsize,
 694                                                          NULL, maxsize,
 695                                                          (u_char *)addr);
 696                         else
 697                                 ret = nand_write_skip_bad(nand, off, &rwsize,
 698                                                           NULL, maxsize,
 699                                                           (u_char *)addr,
 700                                                           WITH_WR_VERIFY);
 701 #ifdef CONFIG_CMD_NAND_TRIMFFS
 702                 } else if (!strcmp(s, ".trimffs")) {
 703                         if (read) {
 704                                 printf("Unknown nand command suffix '%s'\n", s);
 705                                 return 1;
 706                         }
 707                         ret = nand_write_skip_bad(nand, off, &rwsize, NULL,
 708                                                 maxsize, (u_char *)addr,
 709                                                 WITH_DROP_FFS | WITH_WR_VERIFY);
 710 #endif
 711                 } else if (!strcmp(s, ".oob")) {
 712                         /* out-of-band data */
 713                         mtd_oob_ops_t ops = {
 714                                 .oobbuf = (u8 *)addr,
 715                                 .ooblen = rwsize,
 716                                 .mode = MTD_OPS_RAW
 717                         };
 718
 719                         if (read)
 720                                 ret = mtd_read_oob(nand, off, &ops);
 721                         else
 722                                 ret = mtd_write_oob(nand, off, &ops);
 723                 } else if (raw) {
 724                         ret = raw_access(nand, addr, off, pagecount, read);
 725                 } else {
 726                         printf("Unknown nand command suffix '%s'.\n", s);
 727                         return 1;
 728                 }
 729
 730                 printf(" %zu bytes %s: %s\n", rwsize,
 731                        read ? "read" : "written", ret ? "ERROR" : "OK");
 732
 733                 return ret == 0 ? 0 : 1;
 734         }
 735
 736 #ifdef CONFIG_CMD_NAND_TORTURE
 737         if (strcmp(cmd, "torture") == 0) {
 738                 if (argc < 3)
 739                         goto usage;
 740
 741                 if (!str2off(argv[2], &off)) {
 742                         puts("Offset is not a valid number\n");
 743                         return 1;
 744                 }
 745
 746                 printf("\nNAND torture: device %d offset 0x%llx size 0x%x\n",
 747                         dev, off, nand->erasesize);
 748                 ret = nand_torture(nand, off);
 749                 printf(" %s\n", ret ? "Failed" : "Passed");
 750
 751                 return ret == 0 ? 0 : 1;
 752         }
 753 #endif
 754
 755         if (strcmp(cmd, "markbad") == 0) {
 756                 argc -= 2;
 757                 argv += 2;
 758
 759                 if (argc <= 0)
 760                         goto usage;
 761
 762                 while (argc > 0) {
 763                         addr = simple_strtoul(*argv, NULL, 16);
 764
 765                         if (mtd_block_markbad(nand, addr)) {
 766                                 printf("block 0x%08lx NOT marked "
 767                                         "as bad! ERROR %d\n",
 768                                         addr, ret);
 769                                 ret = 1;
 770                         } else {
 771                                 printf("block 0x%08lx successfully "
 772                                         "marked as bad\n",
 773                                         addr);
 774                         }
 775                         --argc;
 776                         ++argv;
 777                 }
 778                 return ret;
 779         }
 780
 781         if (strcmp(cmd, "biterr") == 0) {
 782                 /* todo */
 783                 return 1;
 784         }
 785
 786 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 787         if (strcmp(cmd, "lock") == 0) {
 788                 int tight = 0;
 789                 int status = 0;
 790                 if (argc == 3) {
 791                         if (!strcmp("tight", argv[2]))
 792                                 tight = 1;
 793                         if (!strcmp("status", argv[2]))
 794                                 status = 1;
 795                 }
 796                 if (status) {
 797                         do_nand_status(nand);
 798                 } else {
 799                         if (!nand_lock(nand, tight)) {
 800                                 puts("NAND flash successfully locked\n");
 801                         } else {
 802                                 puts("Error locking NAND flash\n");
 803                                 return 1;
 804                         }
 805                 }
 806                 return 0;
 807         }
 808
 809         if (strncmp(cmd, "unlock", 5) == 0) {
 810                 int allexcept = 0;
 811
 812                 s = strchr(cmd, '.');
 813
 814                 if (s && !strcmp(s, ".allexcept"))
 815                         allexcept = 1;
 816
 817                 if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
 818                                  &maxsize) < 0)
 819                         return 1;
 820
 821                 if (!nand_unlock(&nand_info[dev], off, size, allexcept)) {
 822                         puts("NAND flash successfully unlocked\n");
 823                 } else {
 824                         puts("Error unlocking NAND flash, "
 825                              "write and erase will probably fail\n");
 826                         return 1;
 827                 }
 828                 return 0;
 829         }
 830 #endif
 831
 832 usage:
 833         return CMD_RET_USAGE;
 834 }
 835
 836 #ifdef CONFIG_SYS_LONGHELP
 837 static char nand_help_text[] =
 838         "info - show available NAND devices\n"
 839         "nand device [dev] - show or set current device\n"
 840         "nand read - addr off|partition size\n"
 841         "nand write - addr off|partition size\n"
 842         "    read/write 'size' bytes starting at offset 'off'\n"
 843         "    to/from memory address 'addr', skipping bad blocks.\n"
 844         "nand read.raw - addr off|partition [count]\n"
 845         "nand write.raw - addr off|partition [count]\n"
 846         "    Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
 847 #ifdef CONFIG_CMD_NAND_TRIMFFS
 848         "nand write.trimffs - addr off|partition size\n"
 849         "    write 'size' bytes starting at offset 'off' from memory address\n"
 850         "    'addr', skipping bad blocks and dropping any pages at the end\n"
 851         "    of eraseblocks that contain only 0xFF\n"
 852 #endif
 853         "nand erase[.spread] [clean] off size - erase 'size' bytes "
 854         "from offset 'off'\n"
 855         "    With '.spread', erase enough for given file size, otherwise,\n"
 856         "    'size' includes skipped bad blocks.\n"
 857         "nand erase.part [clean] partition - erase entire mtd partition'\n"
 858         "nand erase.chip [clean] - erase entire chip'\n"
 859         "nand bad - show bad blocks\n"
 860         "nand dump[.oob] off - dump page\n"
 861 #ifdef CONFIG_CMD_NAND_TORTURE
 862         "nand torture off - torture block at offset\n"
 863 #endif
 864         "nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
 865         "    really clean NAND erasing bad blocks (UNSAFE)\n"
 866         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 867         "nand biterr off - make a bit error at offset (UNSAFE)"
 868 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 869         "\n"
 870         "nand lock [tight] [status]\n"
 871         "    bring nand to lock state or display locked pages\n"
 872         "nand unlock[.allexcept] [offset] [size] - unlock section"
 873 #endif
 874 #ifdef CONFIG_ENV_OFFSET_OOB
 875         "\n"
 876         "nand env.oob - environment offset in OOB of block 0 of"
 877         "    first device.\n"
 878         "nand env.oob set off|partition - set enviromnent offset\n"
 879         "nand env.oob get - get environment offset"
 880 #endif
 881         "";
 882 #endif
 883
 884 U_BOOT_CMD(
 885         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 886         "NAND sub-system", nand_help_text
 887 );
 888
 889 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 890                            ulong offset, ulong addr, char *cmd)
 891 {
 892         int r;
 893         char *s;
 894         size_t cnt;
 895 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 896         image_header_t *hdr;
 897 #endif
 898 #if defined(CONFIG_FIT)
 899         const void *fit_hdr = NULL;
 900 #endif
 901
 902         s = strchr(cmd, '.');
 903         if (s != NULL &&
 904             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 905                 printf("Unknown nand load suffix '%s'\n", s);
 906                 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
 907                 return 1;
 908         }
 909
 910         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 911
 912         cnt = nand->writesize;
 913         r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size,
 914                         (u_char *)addr);
 915         if (r) {
 916                 puts("** Read error\n");
 917                 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
 918                 return 1;
 919         }
 920         bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
 921
 922         switch (genimg_get_format ((void *)addr)) {
 923 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 924         case IMAGE_FORMAT_LEGACY:
 925                 hdr = (image_header_t *)addr;
 926
 927                 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
 928                 image_print_contents (hdr);
 929
 930                 cnt = image_get_image_size (hdr);
 931                 break;
 932 #endif
 933 #if defined(CONFIG_FIT)
 934         case IMAGE_FORMAT_FIT:
 935                 fit_hdr = (const void *)addr;
 936                 puts ("Fit image detected...\n");
 937
 938                 cnt = fit_get_size (fit_hdr);
 939                 break;
 940 #endif
 941         default:
 942                 bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
 943                 puts ("** Unknown image type\n");
 944                 return 1;
 945         }
 946         bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
 947
 948         r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size,
 949                         (u_char *)addr);
 950         if (r) {
 951                 puts("** Read error\n");
 952                 bootstage_error(BOOTSTAGE_ID_NAND_READ);
 953                 return 1;
 954         }
 955         bootstage_mark(BOOTSTAGE_ID_NAND_READ);
 956
 957 #if defined(CONFIG_FIT)
 958         /* This cannot be done earlier, we need complete FIT image in RAM first */
 959         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 960                 if (!fit_check_format (fit_hdr)) {
 961                         bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
 962                         puts ("** Bad FIT image format\n");
 963                         return 1;
 964                 }
 965                 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
 966                 fit_print_contents (fit_hdr);
 967         }
 968 #endif
 969
 970         /* Loading ok, update default load address */
 971
 972         load_addr = addr;
 973
 974         return bootm_maybe_autostart(cmdtp, cmd);
 975 }
 976
 977 static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc,
 978                        char * const argv[])
 979 {
 980         char *boot_device = NULL;
 981         int idx;
 982         ulong addr, offset = 0;
 983 #if defined(CONFIG_CMD_MTDPARTS)
 984         struct mtd_device *dev;
 985         struct part_info *part;
 986         u8 pnum;
 987
 988         if (argc >= 2) {
 989                 char *p = (argc == 2) ? argv[1] : argv[2];
 990                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 991                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 992                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 993                                 puts("Not a NAND device\n");
 994                                 return 1;
 995                         }
 996                         if (argc > 3)
 997                                 goto usage;
 998                         if (argc == 3)
 999                                 addr = simple_strtoul(argv[1], NULL, 16);
1000                         else
1001                                 addr = CONFIG_SYS_LOAD_ADDR;
1002                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
1003                                                part->offset, addr, argv[0]);
1004                 }
1005         }
1006 #endif
1007
1008         bootstage_mark(BOOTSTAGE_ID_NAND_PART);
1009         switch (argc) {
1010         case 1:
1011                 addr = CONFIG_SYS_LOAD_ADDR;
1012                 boot_device = getenv("bootdevice");
1013                 break;
1014         case 2:
1015                 addr = simple_strtoul(argv[1], NULL, 16);
1016                 boot_device = getenv("bootdevice");
1017                 break;
1018         case 3:
1019                 addr = simple_strtoul(argv[1], NULL, 16);
1020                 boot_device = argv[2];
1021                 break;
1022         case 4:
1023                 addr = simple_strtoul(argv[1], NULL, 16);
1024                 boot_device = argv[2];
1025                 offset = simple_strtoul(argv[3], NULL, 16);
1026                 break;
1027         default:
1028 #if defined(CONFIG_CMD_MTDPARTS)
1029 usage:
1030 #endif
1031                 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
1032                 return CMD_RET_USAGE;
1033         }
1034         bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
1035
1036         if (!boot_device) {
1037                 puts("\n** No boot device **\n");
1038                 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
1039                 return 1;
1040         }
1041         bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
1042
1043         idx = simple_strtoul(boot_device, NULL, 16);
1044
1045         if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
1046                 printf("\n** Device %d not available\n", idx);
1047                 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
1048                 return 1;
1049         }
1050         bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
1051
1052         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
1053 }
1054
1055 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
1056         "boot from NAND device",
1057         "[partition] | [[[loadAddr] dev] offset]"
1058 );