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