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