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