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  * Added 16-bit nand support
   8  * (C) 2004 Texas Instruments
   9  */
  10
  11 #include <common.h>
  12
  13
  14 #ifndef CFG_NAND_LEGACY
  15 /*
  16  *
  17  * New NAND support
  18  *
  19  */
  20 #include <common.h>
  21
  22 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
  23
  24 #include <command.h>
  25 #include <watchdog.h>
  26 #include <malloc.h>
  27 #include <asm/byteorder.h>
  28
  29 #ifdef CONFIG_SHOW_BOOT_PROGRESS
  30 # include <status_led.h>
  31 # define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
  32 #else
  33 # define SHOW_BOOT_PROGRESS(arg)
  34 #endif
  35
  36 #include <jffs2/jffs2.h>
  37 #include <nand.h>
  38
  39 extern nand_info_t nand_info[];       /* info for NAND chips */
  40
  41 static int nand_dump_oob(nand_info_t *nand, ulong off)
  42 {
  43         return 0;
  44 }
  45
  46 static int nand_dump(nand_info_t *nand, ulong off)
  47 {
  48         int i;
  49         u_char *buf, *p;
  50
  51         buf = malloc(nand->oobblock + nand->oobsize);
  52         if (!buf) {
  53                 puts("No memory for page buffer\n");
  54                 return 1;
  55         }
  56         off &= ~(nand->oobblock - 1);
  57         i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize);
  58         if (i < 0) {
  59                 printf("Error (%d) reading page %08x\n", i, off);
  60                 free(buf);
  61                 return 1;
  62         }
  63         printf("Page %08x dump:\n", off);
  64         i = nand->oobblock >> 4; p = buf;
  65         while (i--) {
  66                 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x"
  67                         "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
  68                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
  69                         p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
  70                 p += 16;
  71         }
  72         puts("OOB:\n");
  73         i = nand->oobsize >> 3;
  74         while (i--) {
  75                 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
  76                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
  77                 p += 8;
  78         }
  79         free(buf);
  80
  81         return 0;
  82 }
  83
  84 /* ------------------------------------------------------------------------- */
  85
  86 static void
  87 arg_off_size(int argc, char *argv[], ulong *off, ulong *size, ulong totsize)
  88 {
  89         *off = 0;
  90         *size = 0;
  91
  92 #if defined(CONFIG_JFFS2_NAND) && defined(CFG_JFFS_CUSTOM_PART)
  93         if (argc >= 1 && strcmp(argv[0], "partition") == 0) {
  94                 int part_num;
  95                 struct part_info *part;
  96                 const char *partstr;
  97
  98                 if (argc >= 2)
  99                         partstr = argv[1];
 100                 else
 101                         partstr = getenv("partition");
 102
 103                 if (partstr)
 104                         part_num = (int)simple_strtoul(partstr, NULL, 10);
 105                 else
 106                         part_num = 0;
 107
 108                 part = jffs2_part_info(part_num);
 109                 if (part == NULL) {
 110                         printf("\nInvalid partition %d\n", part_num);
 111                         return;
 112                 }
 113                 *size = part->size;
 114                 *off = (ulong)part->offset;
 115         } else
 116 #endif
 117         {
 118                 if (argc >= 1)
 119                         *off = (ulong)simple_strtoul(argv[0], NULL, 16);
 120                 else
 121                         *off = 0;
 122
 123                 if (argc >= 2)
 124                         *size = (ulong)simple_strtoul(argv[1], NULL, 16);
 125                 else
 126                         *size = totsize - *off;
 127
 128         }
 129
 130 }
 131
 132 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 133 {
 134         int i, dev, ret;
 135         ulong addr, off, size;
 136         char *cmd, *s;
 137         nand_info_t *nand;
 138
 139         /* at least two arguments please */
 140         if (argc < 2)
 141                 goto usage;
 142
 143         cmd = argv[1];
 144
 145         if (strcmp(cmd, "info") == 0) {
 146
 147                 putc('\n');
 148                 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 149                         if (nand_info[i].name)
 150                                 printf("Device %d: %s, sector size %lu KiB\n",
 151                                         i, nand_info[i].name,
 152                                         nand_info[i].erasesize >> 10);
 153                 }
 154                 return 0;
 155         }
 156
 157         if (strcmp(cmd, "device") == 0) {
 158
 159                 if (argc < 3) {
 160                         if ((nand_curr_device < 0) ||
 161                             (nand_curr_device >= CFG_MAX_NAND_DEVICE))
 162                                 puts("\nno devices available\n");
 163                         else
 164                                 printf("\nDevice %d: %s\n", nand_curr_device,
 165                                         nand_info[nand_curr_device].name);
 166                         return 0;
 167                 }
 168                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 169                 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
 170                         puts("No such device\n");
 171                         return 1;
 172                 }
 173                 printf("Device %d: %s", dev, nand_info[dev].name);
 174                 puts("... is now current device\n");
 175                 nand_curr_device = dev;
 176                 return 0;
 177         }
 178
 179         if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
 180             strncmp(cmd, "dump", 4) != 0 &&
 181             strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0)
 182                 goto usage;
 183
 184         /* the following commands operate on the current device */
 185         if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
 186             !nand_info[nand_curr_device].name) {
 187                 puts("\nno devices available\n");
 188                 return 1;
 189         }
 190         nand = &nand_info[nand_curr_device];
 191
 192         if (strcmp(cmd, "bad") == 0) {
 193                 printf("\nDevice %d bad blocks:\n", nand_curr_device);
 194                 for (off = 0; off < nand->size; off += nand->erasesize)
 195                         if (nand_block_isbad(nand, off))
 196                                 printf("  %08x\n", off);
 197                 return 0;
 198         }
 199
 200         if (strcmp(cmd, "erase") == 0) {
 201                 arg_off_size(argc - 2, argv + 2, &off, &size, nand->size);
 202                 if (off == 0 && size == 0)
 203                         return 1;
 204
 205                 printf("\nNAND erase: device %d offset 0x%x, size 0x%x ",
 206                        nand_curr_device, off, size);
 207                 ret = nand_erase(nand, off, size);
 208                 printf("%s\n", ret ? "ERROR" : "OK");
 209
 210                 return ret == 0 ? 0 : 1;
 211         }
 212
 213         if (strncmp(cmd, "dump", 4) == 0) {
 214                 if (argc < 3)
 215                         goto usage;
 216
 217                 s = strchr(cmd, '.');
 218                 off = (int)simple_strtoul(argv[2], NULL, 16);
 219
 220                 if (s != NULL && strcmp(s, ".oob") == 0)
 221                         ret = nand_dump_oob(nand, off);
 222                 else
 223                         ret = nand_dump(nand, off);
 224
 225                 return ret == 0 ? 1 : 0;
 226
 227         }
 228
 229         /* read write */
 230         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 231                 if (argc < 4)
 232                         goto usage;
 233 /*
 234                 s = strchr(cmd, '.');
 235                 clean = CLEAN_NONE;
 236                 if (s != NULL) {
 237                         if (strcmp(s, ".jffs2") == 0 || strcmp(s, ".e") == 0
 238                             || strcmp(s, ".i"))
 239                                 clean = CLEAN_JFFS2;
 240                 }
 241 */
 242                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 243
 244                 arg_off_size(argc - 3, argv + 3, &off, &size, nand->size);
 245                 if (off == 0 && size == 0)
 246                         return 1;
 247
 248                 i = strncmp(cmd, "read", 4) == 0;       /* 1 = read, 0 = write */
 249                 printf("\nNAND %s: device %d offset %u, size %u ... ",
 250                        i ? "read" : "write", nand_curr_device, off, size);
 251
 252                 if (i)
 253                         ret = nand_read(nand, off, &size, (u_char *)addr);
 254                 else
 255                         ret = nand_write(nand, off, &size, (u_char *)addr);
 256
 257                 printf(" %d bytes %s: %s\n", size,
 258                        i ? "read" : "written", ret ? "ERROR" : "OK");
 259
 260                 return ret == 0 ? 0 : 1;
 261         }
 262 usage:
 263         printf("Usage:\n%s\n", cmdtp->usage);
 264         return 1;
 265 }
 266
 267 U_BOOT_CMD(nand, 5, 1, do_nand,
 268         "nand    - NAND sub-system\n",
 269         "info                  - show available NAND devices\n"
 270         "nand device [dev]     - show or set current device\n"
 271         "nand read[.jffs2]     - addr off size\n"
 272         "nand write[.jffs2]    - addr off size - read/write `size' bytes starting\n"
 273         "    at offset `off' to/from memory address `addr'\n"
 274         "nand erase [clean] [off size] - erase `size' bytes from\n"
 275         "    offset `off' (entire device if not specified)\n"
 276         "nand bad - show bad blocks\n"
 277         "nand dump[.oob] off - dump page\n"
 278         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
 279         "nand markbad off - mark bad block at offset (UNSAFE)\n"
 280         "nand biterr off - make a bit error at offset (UNSAFE)\n");
 281
 282 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 283 {
 284         char *boot_device = NULL;
 285         char *ep;
 286         int dev;
 287         int r;
 288         ulong addr, cnt, offset = 0;
 289         image_header_t *hdr;
 290         nand_info_t *nand;
 291
 292         switch (argc) {
 293         case 1:
 294                 addr = CFG_LOAD_ADDR;
 295                 boot_device = getenv("bootdevice");
 296                 break;
 297         case 2:
 298                 addr = simple_strtoul(argv[1], NULL, 16);
 299                 boot_device = getenv("bootdevice");
 300                 break;
 301         case 3:
 302                 addr = simple_strtoul(argv[1], NULL, 16);
 303                 boot_device = argv[2];
 304                 break;
 305         case 4:
 306                 addr = simple_strtoul(argv[1], NULL, 16);
 307                 boot_device = argv[2];
 308                 offset = simple_strtoul(argv[3], NULL, 16);
 309                 break;
 310         default:
 311                 printf("Usage:\n%s\n", cmdtp->usage);
 312                 SHOW_BOOT_PROGRESS(-1);
 313                 return 1;
 314         }
 315
 316         if (!boot_device) {
 317                 puts("\n** No boot device **\n");
 318                 SHOW_BOOT_PROGRESS(-1);
 319                 return 1;
 320         }
 321
 322         dev = simple_strtoul(boot_device, &ep, 16);
 323
 324         if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
 325                 printf("\n** Device %d not available\n", dev);
 326                 SHOW_BOOT_PROGRESS(-1);
 327                 return 1;
 328         }
 329
 330         nand = &nand_info[dev];
 331         printf("\nLoading from device %d: %s (offset 0x%lx)\n",
 332                dev, nand->name, offset);
 333
 334         cnt = nand->oobblock;
 335         r = nand_read(nand, offset, &cnt, (u_char *) addr);
 336         if (r) {
 337                 printf("** Read error on %d\n", dev);
 338                 SHOW_BOOT_PROGRESS(-1);
 339                 return 1;
 340         }
 341
 342         hdr = (image_header_t *) addr;
 343
 344         if (ntohl(hdr->ih_magic) != IH_MAGIC) {
 345                 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
 346                 SHOW_BOOT_PROGRESS(-1);
 347                 return 1;
 348         }
 349
 350         print_image_hdr(hdr);
 351
 352         cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
 353
 354         r = nand_read(nand, offset, &cnt, (u_char *) addr);
 355         if (r) {
 356                 printf("** Read error on %d\n", dev);
 357                 SHOW_BOOT_PROGRESS(-1);
 358                 return 1;
 359         }
 360
 361         /* Loading ok, update default load address */
 362
 363         load_addr = addr;
 364
 365         /* Check if we should attempt an auto-start */
 366         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 367                 char *local_args[2];
 368                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 369
 370                 local_args[0] = argv[0];
 371                 local_args[1] = NULL;
 372
 373                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 374
 375                 do_bootm(cmdtp, 0, 1, local_args);
 376                 return 1;
 377         }
 378         return 0;
 379 }
 380
 381 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 382         "nboot   - boot from NAND device\n", "loadAddr dev\n");
 383
 384
 385 #endif                          /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
 386
 387 #else /* CFG_NAND_LEGACY */
 388 /*
 389  *
 390  * Legacy NAND support - to be phased out
 391  *
 392  */
 393 #include <command.h>
 394 #include <malloc.h>
 395 #include <asm/io.h>
 396 #include <watchdog.h>
 397
 398 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 399 # include <status_led.h>
 400 # define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
 401 #else
 402 # define SHOW_BOOT_PROGRESS(arg)
 403 #endif
 404
 405 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 406 #include <linux/mtd/nand_legacy.h>
 407 #if 0
 408 #include <linux/mtd/nand_ids.h>
 409 #include <jffs2/jffs2.h>
 410 #endif
 411
 412 #ifdef CONFIG_OMAP1510
 413 void archflashwp(void *archdata, int wp);
 414 #endif
 415
 416 #define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
 417
 418 #undef  NAND_DEBUG
 419 #undef  PSYCHO_DEBUG
 420
 421 /* ****************** WARNING *********************
 422  * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
 423  * erase (or at least attempt to erase) blocks that are marked
 424  * bad. This can be very handy if you are _sure_ that the block
 425  * is OK, say because you marked a good block bad to test bad
 426  * block handling and you are done testing, or if you have
 427  * accidentally marked blocks bad.
 428  *
 429  * Erasing factory marked bad blocks is a _bad_ idea. If the
 430  * erase succeeds there is no reliable way to find them again,
 431  * and attempting to program or erase bad blocks can affect
 432  * the data in _other_ (good) blocks.
 433  */
 434 #define  ALLOW_ERASE_BAD_DEBUG 0
 435
 436 #define CONFIG_MTD_NAND_ECC  /* enable ECC */
 437 #define CONFIG_MTD_NAND_ECC_JFFS2
 438
 439 /* bits for nand_legacy_rw() `cmd'; or together as needed */
 440 #define NANDRW_READ     0x01
 441 #define NANDRW_WRITE    0x00
 442 #define NANDRW_JFFS2    0x02
 443 #define NANDRW_JFFS2_SKIP       0x04
 444
 445 /*
 446  * Imports from nand_legacy.c
 447  */
 448 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
 449 extern int curr_device;
 450 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
 451                             size_t len, int clean);
 452 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
 453                          size_t len, size_t *retlen, u_char *buf);
 454 extern void nand_print(struct nand_chip *nand);
 455 extern void nand_print_bad(struct nand_chip *nand);
 456 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
 457                                size_t len, size_t *retlen, u_char *buf);
 458 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
 459                                 size_t len, size_t *retlen, const u_char *buf);
 460
 461
 462 int do_nand (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 463 {
 464     int rcode = 0;
 465
 466     switch (argc) {
 467     case 0:
 468     case 1:
 469         printf ("Usage:\n%s\n", cmdtp->usage);
 470         return 1;
 471     case 2:
 472         if (strcmp(argv[1],"info") == 0) {
 473                 int i;
 474
 475                 putc ('\n');
 476
 477                 for (i=0; i<CFG_MAX_NAND_DEVICE; ++i) {
 478                         if(nand_dev_desc[i].ChipID == NAND_ChipID_UNKNOWN)
 479                                 continue; /* list only known devices */
 480                         printf ("Device %d: ", i);
 481                         nand_print(&nand_dev_desc[i]);
 482                 }
 483                 return 0;
 484
 485         } else if (strcmp(argv[1],"device") == 0) {
 486                 if ((curr_device < 0) || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 487                         puts ("\nno devices available\n");
 488                         return 1;
 489                 }
 490                 printf ("\nDevice %d: ", curr_device);
 491                 nand_print(&nand_dev_desc[curr_device]);
 492                 return 0;
 493
 494         } else if (strcmp(argv[1],"bad") == 0) {
 495                 if ((curr_device < 0) || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 496                         puts ("\nno devices available\n");
 497                         return 1;
 498                 }
 499                 printf ("\nDevice %d bad blocks:\n", curr_device);
 500                 nand_print_bad(&nand_dev_desc[curr_device]);
 501                 return 0;
 502
 503         }
 504         printf ("Usage:\n%s\n", cmdtp->usage);
 505         return 1;
 506     case 3:
 507         if (strcmp(argv[1],"device") == 0) {
 508                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 509
 510                 printf ("\nDevice %d: ", dev);
 511                 if (dev >= CFG_MAX_NAND_DEVICE) {
 512                         puts ("unknown device\n");
 513                         return 1;
 514                 }
 515                 nand_print(&nand_dev_desc[dev]);
 516                 /*nand_print (dev);*/
 517
 518                 if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
 519                         return 1;
 520                 }
 521
 522                 curr_device = dev;
 523
 524                 puts ("... is now current device\n");
 525
 526                 return 0;
 527         }
 528         else if (strcmp(argv[1],"erase") == 0 && strcmp(argv[2], "clean") == 0) {
 529                 struct nand_chip* nand = &nand_dev_desc[curr_device];
 530                 ulong off = 0;
 531                 ulong size = nand->totlen;
 532                 int ret;
 533
 534                 printf ("\nNAND erase: device %d offset %ld, size %ld ... ",
 535                         curr_device, off, size);
 536
 537                 ret = nand_legacy_erase (nand, off, size, 1);
 538
 539                 printf("%s\n", ret ? "ERROR" : "OK");
 540
 541                 return ret;
 542         }
 543
 544         printf ("Usage:\n%s\n", cmdtp->usage);
 545         return 1;
 546     default:
 547         /* at least 4 args */
 548
 549         if (strncmp(argv[1], "read", 4) == 0 ||
 550             strncmp(argv[1], "write", 5) == 0) {
 551                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 552                 ulong off  = simple_strtoul(argv[3], NULL, 16);
 553                 ulong size = simple_strtoul(argv[4], NULL, 16);
 554                 int cmd    = (strncmp(argv[1], "read", 4) == 0) ?
 555                                 NANDRW_READ : NANDRW_WRITE;
 556                 int ret, total;
 557                 char* cmdtail = strchr(argv[1], '.');
 558
 559                 if (cmdtail && !strncmp(cmdtail, ".oob", 2)) {
 560                         /* read out-of-band data */
 561                         if (cmd & NANDRW_READ) {
 562                                 ret = nand_read_oob(nand_dev_desc + curr_device,
 563                                                     off, size, (size_t *)&total,
 564                                                     (u_char*)addr);
 565                         }
 566                         else {
 567                                 ret = nand_write_oob(nand_dev_desc + curr_device,
 568                                                      off, size, (size_t *)&total,
 569                                                      (u_char*)addr);
 570                         }
 571                         return ret;
 572                 }
 573                 else if (cmdtail && !strncmp(cmdtail, ".jffs2", 2))
 574                         cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 575                 else if (cmdtail && !strncmp(cmdtail, ".jffs2s", 2)) {
 576                         cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 577                         if (cmd & NANDRW_READ)
 578                                 cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 579                 }
 580 #ifdef SXNI855T
 581                 /* need ".e" same as ".j" for compatibility with older units */
 582                 else if (cmdtail && !strcmp(cmdtail, ".e"))
 583                         cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 584 #endif
 585 #ifdef CFG_NAND_SKIP_BAD_DOT_I
 586                 /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
 587                 /* ".i" for image -> read skips bad block (no 0xff) */
 588                 else if (cmdtail && !strcmp(cmdtail, ".i")) {
 589                         cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 590                         if (cmd & NANDRW_READ)
 591                                 cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 592                 }
 593 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
 594                 else if (cmdtail) {
 595                         printf ("Usage:\n%s\n", cmdtp->usage);
 596                         return 1;
 597                 }
 598
 599                 printf ("\nNAND %s: device %d offset %ld, size %ld ... ",
 600                         (cmd & NANDRW_READ) ? "read" : "write",
 601                         curr_device, off, size);
 602
 603                 ret = nand_legacy_rw(nand_dev_desc + curr_device, cmd, off, size,
 604                              (size_t *)&total, (u_char*)addr);
 605
 606                 printf (" %d bytes %s: %s\n", total,
 607                         (cmd & NANDRW_READ) ? "read" : "written",
 608                         ret ? "ERROR" : "OK");
 609
 610                 return ret;
 611         } else if (strcmp(argv[1],"erase") == 0 &&
 612                    (argc == 4 || strcmp("clean", argv[2]) == 0)) {
 613                 int clean = argc == 5;
 614                 ulong off = simple_strtoul(argv[2 + clean], NULL, 16);
 615                 ulong size = simple_strtoul(argv[3 + clean], NULL, 16);
 616                 int ret;
 617
 618                 printf ("\nNAND erase: device %d offset %ld, size %ld ... ",
 619                         curr_device, off, size);
 620
 621                 ret = nand_legacy_erase (nand_dev_desc + curr_device,
 622                                         off, size, clean);
 623
 624                 printf("%s\n", ret ? "ERROR" : "OK");
 625
 626                 return ret;
 627         } else {
 628                 printf ("Usage:\n%s\n", cmdtp->usage);
 629                 rcode = 1;
 630         }
 631
 632         return rcode;
 633     }
 634 }
 635
 636 U_BOOT_CMD(
 637         nand,   5,      1,      do_nand,
 638         "nand    - NAND sub-system\n",
 639         "info  - show available NAND devices\n"
 640         "nand device [dev] - show or set current device\n"
 641         "nand read[.jffs2[s]]  addr off size\n"
 642         "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
 643         "    at offset `off' to/from memory address `addr'\n"
 644         "nand erase [clean] [off size] - erase `size' bytes from\n"
 645         "    offset `off' (entire device if not specified)\n"
 646         "nand bad - show bad blocks\n"
 647         "nand read.oob addr off size - read out-of-band data\n"
 648         "nand write.oob addr off size - read out-of-band data\n"
 649 );
 650
 651 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 652 {
 653         char *boot_device = NULL;
 654         char *ep;
 655         int dev;
 656         ulong cnt;
 657         ulong addr;
 658         ulong offset = 0;
 659         image_header_t *hdr;
 660         int rcode = 0;
 661         switch (argc) {
 662         case 1:
 663                 addr = CFG_LOAD_ADDR;
 664                 boot_device = getenv ("bootdevice");
 665                 break;
 666         case 2:
 667                 addr = simple_strtoul(argv[1], NULL, 16);
 668                 boot_device = getenv ("bootdevice");
 669                 break;
 670         case 3:
 671                 addr = simple_strtoul(argv[1], NULL, 16);
 672                 boot_device = argv[2];
 673                 break;
 674         case 4:
 675                 addr = simple_strtoul(argv[1], NULL, 16);
 676                 boot_device = argv[2];
 677                 offset = simple_strtoul(argv[3], NULL, 16);
 678                 break;
 679         default:
 680                 printf ("Usage:\n%s\n", cmdtp->usage);
 681                 SHOW_BOOT_PROGRESS (-1);
 682                 return 1;
 683         }
 684
 685         if (!boot_device) {
 686                 puts ("\n** No boot device **\n");
 687                 SHOW_BOOT_PROGRESS (-1);
 688                 return 1;
 689         }
 690
 691         dev = simple_strtoul(boot_device, &ep, 16);
 692
 693         if ((dev >= CFG_MAX_NAND_DEVICE) ||
 694             (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
 695                 printf ("\n** Device %d not available\n", dev);
 696                 SHOW_BOOT_PROGRESS (-1);
 697                 return 1;
 698         }
 699
 700         printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
 701                 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
 702                 offset);
 703
 704         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 705                         SECTORSIZE, NULL, (u_char *)addr)) {
 706                 printf ("** Read error on %d\n", dev);
 707                 SHOW_BOOT_PROGRESS (-1);
 708                 return 1;
 709         }
 710
 711         hdr = (image_header_t *)addr;
 712
 713         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
 714
 715                 print_image_hdr (hdr);
 716
 717                 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
 718                 cnt -= SECTORSIZE;
 719         } else {
 720                 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
 721                 SHOW_BOOT_PROGRESS (-1);
 722                 return 1;
 723         }
 724
 725         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
 726                         offset + SECTORSIZE, cnt, NULL,
 727                         (u_char *)(addr+SECTORSIZE))) {
 728                 printf ("** Read error on %d\n", dev);
 729                 SHOW_BOOT_PROGRESS (-1);
 730                 return 1;
 731         }
 732
 733         /* Loading ok, update default load address */
 734
 735         load_addr = addr;
 736
 737         /* Check if we should attempt an auto-start */
 738         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 739                 char *local_args[2];
 740                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 741
 742                 local_args[0] = argv[0];
 743                 local_args[1] = NULL;
 744
 745                 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
 746
 747                 do_bootm (cmdtp, 0, 1, local_args);
 748                 rcode = 1;
 749         }
 750         return rcode;
 751 }
 752
 753 U_BOOT_CMD(
 754         nboot,  4,      1,      do_nandboot,
 755         "nboot   - boot from NAND device\n",
 756         "loadAddr dev\n"
 757 );
 758
 759 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
 760
 761 #endif /* CFG_NAND_LEGACY */