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 defined(CONFIG_CMD_NAND)
  23
  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_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
  32
  33 /* parition 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 extern nand_info_t nand_info[];       /* info for NAND chips */
  41
  42 static int nand_dump_oob(nand_info_t *nand, ulong off)
  43 {
  44         return 0;
  45 }
  46
  47 static int nand_dump(nand_info_t *nand, ulong off)
  48 {
  49         int i;
  50         u_char *buf, *p;
  51
  52         buf = malloc(nand->oobblock + nand->oobsize);
  53         if (!buf) {
  54                 puts("No memory for page buffer\n");
  55                 return 1;
  56         }
  57         off &= ~(nand->oobblock - 1);
  58         i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize);
  59         if (i < 0) {
  60                 printf("Error (%d) reading page %08x\n", i, off);
  61                 free(buf);
  62                 return 1;
  63         }
  64         printf("Page %08x dump:\n", off);
  65         i = nand->oobblock >> 4; p = buf;
  66         while (i--) {
  67                 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x"
  68                         "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
  69                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
  70                         p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
  71                 p += 16;
  72         }
  73         puts("OOB:\n");
  74         i = nand->oobsize >> 3;
  75         while (i--) {
  76                 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
  77                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
  78                 p += 8;
  79         }
  80         free(buf);
  81
  82         return 0;
  83 }
  84
  85 /* ------------------------------------------------------------------------- */
  86
  87 static inline int str2long(char *p, ulong *num)
  88 {
  89         char *endptr;
  90
  91         *num = simple_strtoul(p, &endptr, 16);
  92         return (*p != '\0' && *endptr == '\0') ? 1 : 0;
  93 }
  94
  95 static int
  96 arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, ulong *size)
  97 {
  98         int idx = nand_curr_device;
  99 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 100         struct mtd_device *dev;
 101         struct part_info *part;
 102         u8 pnum;
 103
 104         if (argc >= 1 && !(str2long(argv[0], off))) {
 105                 if ((mtdparts_init() == 0) &&
 106                     (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
 107                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 108                                 puts("not a NAND device\n");
 109                                 return -1;
 110                         }
 111                         *off = part->offset;
 112                         if (argc >= 2) {
 113                                 if (!(str2long(argv[1], size))) {
 114                                         printf("'%s' is not a number\n", argv[1]);
 115                                         return -1;
 116                                 }
 117                                 if (*size > part->size)
 118                                         *size = part->size;
 119                         } else {
 120                                 *size = part->size;
 121                         }
 122                         idx = dev->id->num;
 123                         *nand = nand_info[idx];
 124                         goto out;
 125                 }
 126         }
 127 #endif
 128
 129         if (argc >= 1) {
 130                 if (!(str2long(argv[0], off))) {
 131                         printf("'%s' is not a number\n", argv[0]);
 132                         return -1;
 133                 }
 134         } else {
 135                 *off = 0;
 136         }
 137
 138         if (argc >= 2) {
 139                 if (!(str2long(argv[1], size))) {
 140                         printf("'%s' is not a number\n", argv[1]);
 141                         return -1;
 142                 }
 143         } else {
 144                 *size = nand->size - *off;
 145         }
 146
 147 #if  defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 148 out:
 149 #endif
 150         printf("device %d ", idx);
 151         if (*size == nand->size)
 152                 puts("whole chip\n");
 153         else
 154                 printf("offset 0x%x, size 0x%x\n", *off, *size);
 155         return 0;
 156 }
 157
 158 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 159 {
 160         int i, dev, ret;
 161         ulong addr, off, size;
 162         char *cmd, *s;
 163         nand_info_t *nand;
 164         int quiet = 0;
 165         const char *quiet_str = getenv("quiet");
 166
 167         /* at least two arguments please */
 168         if (argc < 2)
 169                 goto usage;
 170
 171         if (quiet_str)
 172                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 173
 174         cmd = argv[1];
 175
 176         if (strcmp(cmd, "info") == 0) {
 177
 178                 putc('\n');
 179                 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 180                         if (nand_info[i].name)
 181                                 printf("Device %d: %s, sector size %lu KiB\n",
 182                                         i, nand_info[i].name,
 183                                         nand_info[i].erasesize >> 10);
 184                 }
 185                 return 0;
 186         }
 187
 188         if (strcmp(cmd, "device") == 0) {
 189
 190                 if (argc < 3) {
 191                         if ((nand_curr_device < 0) ||
 192                             (nand_curr_device >= CFG_MAX_NAND_DEVICE))
 193                                 puts("\nno devices available\n");
 194                         else
 195                                 printf("\nDevice %d: %s\n", nand_curr_device,
 196                                         nand_info[nand_curr_device].name);
 197                         return 0;
 198                 }
 199                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 200                 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
 201                         puts("No such device\n");
 202                         return 1;
 203                 }
 204                 printf("Device %d: %s", dev, nand_info[dev].name);
 205                 puts("... is now current device\n");
 206                 nand_curr_device = dev;
 207
 208 #ifdef CFG_NAND_SELECT_DEVICE
 209                 /*
 210                  * Select the chip in the board/cpu specific driver
 211                  */
 212                 board_nand_select_device(nand_info[dev].priv, dev);
 213 #endif
 214
 215                 return 0;
 216         }
 217
 218         if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
 219             strncmp(cmd, "dump", 4) != 0 &&
 220             strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
 221             strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
 222             strcmp(cmd, "biterr") != 0 &&
 223             strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
 224                 goto usage;
 225
 226         /* the following commands operate on the current device */
 227         if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
 228             !nand_info[nand_curr_device].name) {
 229                 puts("\nno devices available\n");
 230                 return 1;
 231         }
 232         nand = &nand_info[nand_curr_device];
 233
 234         if (strcmp(cmd, "bad") == 0) {
 235                 printf("\nDevice %d bad blocks:\n", nand_curr_device);
 236                 for (off = 0; off < nand->size; off += nand->erasesize)
 237                         if (nand_block_isbad(nand, off))
 238                                 printf("  %08x\n", off);
 239                 return 0;
 240         }
 241
 242         /*
 243          * Syntax is:
 244          *   0    1     2       3    4
 245          *   nand erase [clean] [off size]
 246          */
 247         if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
 248                 nand_erase_options_t opts;
 249                 /* "clean" at index 2 means request to write cleanmarker */
 250                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 251                 int o = clean ? 3 : 2;
 252                 int scrub = !strcmp(cmd, "scrub");
 253
 254                 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
 255                 /* skip first two or three arguments, look for offset and size */
 256                 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
 257                         return 1;
 258
 259                 memset(&opts, 0, sizeof(opts));
 260                 opts.offset = off;
 261                 opts.length = size;
 262                 opts.jffs2  = clean;
 263                 opts.quiet  = quiet;
 264
 265                 if (scrub) {
 266                         puts("Warning: "
 267                              "scrub option will erase all factory set "
 268                              "bad blocks!\n"
 269                              "         "
 270                              "There is no reliable way to recover them.\n"
 271                              "         "
 272                              "Use this command only for testing purposes "
 273                              "if you\n"
 274                              "         "
 275                              "are sure of what you are doing!\n"
 276                              "\nReally scrub this NAND flash? <y/N>\n");
 277
 278                         if (getc() == 'y' && getc() == '\r') {
 279                                 opts.scrub = 1;
 280                         } else {
 281                                 puts("scrub aborted\n");
 282                                 return -1;
 283                         }
 284                 }
 285                 ret = nand_erase_opts(nand, &opts);
 286                 printf("%s\n", ret ? "ERROR" : "OK");
 287
 288                 return ret == 0 ? 0 : 1;
 289         }
 290
 291         if (strncmp(cmd, "dump", 4) == 0) {
 292                 if (argc < 3)
 293                         goto usage;
 294
 295                 s = strchr(cmd, '.');
 296                 off = (int)simple_strtoul(argv[2], NULL, 16);
 297
 298                 if (s != NULL && strcmp(s, ".oob") == 0)
 299                         ret = nand_dump_oob(nand, off);
 300                 else
 301                         ret = nand_dump(nand, off);
 302
 303                 return ret == 0 ? 1 : 0;
 304
 305         }
 306
 307         /* read write */
 308         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 309                 int read;
 310
 311                 if (argc < 4)
 312                         goto usage;
 313
 314                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 315
 316                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 317                 printf("\nNAND %s: ", read ? "read" : "write");
 318                 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
 319                         return 1;
 320
 321                 s = strchr(cmd, '.');
 322                 if (s != NULL &&
 323                     (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
 324                         if (read) {
 325                                 /* read */
 326                                 nand_read_options_t opts;
 327                                 memset(&opts, 0, sizeof(opts));
 328                                 opts.buffer     = (u_char*) addr;
 329                                 opts.length     = size;
 330                                 opts.offset     = off;
 331                                 opts.quiet      = quiet;
 332                                 ret = nand_read_opts(nand, &opts);
 333                         } else {
 334                                 /* write */
 335                                 nand_write_options_t opts;
 336                                 memset(&opts, 0, sizeof(opts));
 337                                 opts.buffer     = (u_char*) addr;
 338                                 opts.length     = size;
 339                                 opts.offset     = off;
 340                                 /* opts.forcejffs2 = 1; */
 341                                 opts.pad        = 1;
 342                                 opts.blockalign = 1;
 343                                 opts.quiet      = quiet;
 344                                 ret = nand_write_opts(nand, &opts);
 345                         }
 346                 } else {
 347                         if (read)
 348                                 ret = nand_read(nand, off, &size, (u_char *)addr);
 349                         else
 350                                 ret = nand_write(nand, off, &size, (u_char *)addr);
 351                 }
 352
 353                 printf(" %d bytes %s: %s\n", size,
 354                        read ? "read" : "written", ret ? "ERROR" : "OK");
 355
 356                 return ret == 0 ? 0 : 1;
 357         }
 358
 359         if (strcmp(cmd, "markbad") == 0) {
 360                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 361
 362                 int ret = nand->block_markbad(nand, addr);
 363                 if (ret == 0) {
 364                         printf("block 0x%08lx successfully marked as bad\n",
 365                                (ulong) addr);
 366                         return 0;
 367                 } else {
 368                         printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
 369                                (ulong) addr, ret);
 370                 }
 371                 return 1;
 372         }
 373         if (strcmp(cmd, "biterr") == 0) {
 374                 /* todo */
 375                 return 1;
 376         }
 377
 378         if (strcmp(cmd, "lock") == 0) {
 379                 int tight  = 0;
 380                 int status = 0;
 381                 if (argc == 3) {
 382                         if (!strcmp("tight", argv[2]))
 383                                 tight = 1;
 384                         if (!strcmp("status", argv[2]))
 385                                 status = 1;
 386                 }
 387
 388                 if (status) {
 389                         ulong block_start = 0;
 390                         ulong off;
 391                         int last_status = -1;
 392
 393                         struct nand_chip *nand_chip = nand->priv;
 394                         /* check the WP bit */
 395                         nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
 396                         printf("device is %swrite protected\n",
 397                                (nand_chip->read_byte(nand) & 0x80 ?
 398                                 "NOT " : "" ) );
 399
 400                         for (off = 0; off < nand->size; off += nand->oobblock) {
 401                                 int s = nand_get_lock_status(nand, off);
 402
 403                                 /* print message only if status has changed
 404                                  * or at end of chip
 405                                  */
 406                                 if (off == nand->size - nand->oobblock
 407                                     || (s != last_status && off != 0))  {
 408
 409                                         printf("%08x - %08x: %8d pages %s%s%s\n",
 410                                                block_start,
 411                                                off-1,
 412                                                (off-block_start)/nand->oobblock,
 413                                                ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
 414                                                ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
 415                                                ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
 416                                 }
 417
 418                                 last_status = s;
 419                        }
 420                 } else {
 421                         if (!nand_lock(nand, tight)) {
 422                                 puts("NAND flash successfully locked\n");
 423                         } else {
 424                                 puts("Error locking NAND flash\n");
 425                                 return 1;
 426                         }
 427                 }
 428                 return 0;
 429         }
 430
 431         if (strcmp(cmd, "unlock") == 0) {
 432                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
 433                         return 1;
 434
 435                 if (!nand_unlock(nand, off, size)) {
 436                         puts("NAND flash successfully unlocked\n");
 437                 } else {
 438                         puts("Error unlocking NAND flash, "
 439                              "write and erase will probably fail\n");
 440                         return 1;
 441                 }
 442                 return 0;
 443         }
 444
 445 usage:
 446         printf("Usage:\n%s\n", cmdtp->usage);
 447         return 1;
 448 }
 449
 450 U_BOOT_CMD(nand, 5, 1, do_nand,
 451         "nand    - NAND sub-system\n",
 452         "info                  - show available NAND devices\n"
 453         "nand device [dev]     - show or set current device\n"
 454         "nand read[.jffs2]     - addr off|partition size\n"
 455         "nand write[.jffs2]    - addr off|partiton size - read/write `size' bytes starting\n"
 456         "    at offset `off' to/from memory address `addr'\n"
 457         "nand erase [clean] [off size] - erase `size' bytes from\n"
 458         "    offset `off' (entire device if not specified)\n"
 459         "nand bad - show bad blocks\n"
 460         "nand dump[.oob] off - dump page\n"
 461         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
 462         "nand markbad off - mark bad block at offset (UNSAFE)\n"
 463         "nand biterr off - make a bit error at offset (UNSAFE)\n"
 464         "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
 465         "nand unlock [offset] [size] - unlock section\n");
 466
 467 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 468                            ulong offset, ulong addr, char *cmd)
 469 {
 470         int r;
 471         char *ep;
 472         ulong cnt;
 473         image_header_t *hdr;
 474
 475         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 476
 477         cnt = nand->oobblock;
 478         r = nand_read(nand, offset, &cnt, (u_char *) addr);
 479         if (r) {
 480                 puts("** Read error\n");
 481                 show_boot_progress (-56);
 482                 return 1;
 483         }
 484         show_boot_progress (56);
 485
 486         hdr = (image_header_t *) addr;
 487
 488         if (ntohl(hdr->ih_magic) != IH_MAGIC) {
 489                 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
 490                 show_boot_progress (-57);
 491                 return 1;
 492         }
 493         show_boot_progress (57);
 494
 495         print_image_hdr(hdr);
 496
 497         cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
 498
 499         r = nand_read(nand, offset, &cnt, (u_char *) addr);
 500         if (r) {
 501                 puts("** Read error\n");
 502                 show_boot_progress (-58);
 503                 return 1;
 504         }
 505         show_boot_progress (58);
 506
 507         /* Loading ok, update default load address */
 508
 509         load_addr = addr;
 510
 511         /* Check if we should attempt an auto-start */
 512         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 513                 char *local_args[2];
 514                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 515
 516                 local_args[0] = cmd;
 517                 local_args[1] = NULL;
 518
 519                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 520
 521                 do_bootm(cmdtp, 0, 1, local_args);
 522                 return 1;
 523         }
 524         return 0;
 525 }
 526
 527 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 528 {
 529         char *boot_device = NULL;
 530         int idx;
 531         ulong addr, offset = 0;
 532 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 533         struct mtd_device *dev;
 534         struct part_info *part;
 535         u8 pnum;
 536
 537         if (argc >= 2) {
 538                 char *p = (argc == 2) ? argv[1] : argv[2];
 539                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 540                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 541                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 542                                 puts("Not a NAND device\n");
 543                                 return 1;
 544                         }
 545                         if (argc > 3)
 546                                 goto usage;
 547                         if (argc == 3)
 548                                 addr = simple_strtoul(argv[2], NULL, 16);
 549                         else
 550                                 addr = CFG_LOAD_ADDR;
 551                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 552                                                part->offset, addr, argv[0]);
 553                 }
 554         }
 555 #endif
 556
 557         show_boot_progress(52);
 558         switch (argc) {
 559         case 1:
 560                 addr = CFG_LOAD_ADDR;
 561                 boot_device = getenv("bootdevice");
 562                 break;
 563         case 2:
 564                 addr = simple_strtoul(argv[1], NULL, 16);
 565                 boot_device = getenv("bootdevice");
 566                 break;
 567         case 3:
 568                 addr = simple_strtoul(argv[1], NULL, 16);
 569                 boot_device = argv[2];
 570                 break;
 571         case 4:
 572                 addr = simple_strtoul(argv[1], NULL, 16);
 573                 boot_device = argv[2];
 574                 offset = simple_strtoul(argv[3], NULL, 16);
 575                 break;
 576         default:
 577 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 578 usage:
 579 #endif
 580                 printf("Usage:\n%s\n", cmdtp->usage);
 581                 show_boot_progress(-53);
 582                 return 1;
 583         }
 584
 585         show_boot_progress(53);
 586         if (!boot_device) {
 587                 puts("\n** No boot device **\n");
 588                 show_boot_progress(-54);
 589                 return 1;
 590         }
 591         show_boot_progress(54);
 592
 593         idx = simple_strtoul(boot_device, NULL, 16);
 594
 595         if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
 596                 printf("\n** Device %d not available\n", idx);
 597                 show_boot_progress(-55);
 598                 return 1;
 599         }
 600         show_boot_progress(55);
 601
 602         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 603 }
 604
 605 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 606         "nboot   - boot from NAND device\n",
 607         "[partition] | [[[loadAddr] dev] offset]\n");
 608
 609 #endif
 610
 611 #else /* CFG_NAND_LEGACY */
 612 /*
 613  *
 614  * Legacy NAND support - to be phased out
 615  *
 616  */
 617 #include <command.h>
 618 #include <malloc.h>
 619 #include <asm/io.h>
 620 #include <watchdog.h>
 621
 622 #ifdef CONFIG_show_boot_progress
 623 # include <status_led.h>
 624 # define show_boot_progress(arg)        show_boot_progress(arg)
 625 #else
 626 # define show_boot_progress(arg)
 627 #endif
 628
 629 #if defined(CONFIG_CMD_NAND)
 630 #include <linux/mtd/nand_legacy.h>
 631 #if 0
 632 #include <linux/mtd/nand_ids.h>
 633 #include <jffs2/jffs2.h>
 634 #endif
 635
 636 #ifdef CONFIG_OMAP1510
 637 void archflashwp(void *archdata, int wp);
 638 #endif
 639
 640 #define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
 641
 642 #undef  NAND_DEBUG
 643 #undef  PSYCHO_DEBUG
 644
 645 /* ****************** WARNING *********************
 646  * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
 647  * erase (or at least attempt to erase) blocks that are marked
 648  * bad. This can be very handy if you are _sure_ that the block
 649  * is OK, say because you marked a good block bad to test bad
 650  * block handling and you are done testing, or if you have
 651  * accidentally marked blocks bad.
 652  *
 653  * Erasing factory marked bad blocks is a _bad_ idea. If the
 654  * erase succeeds there is no reliable way to find them again,
 655  * and attempting to program or erase bad blocks can affect
 656  * the data in _other_ (good) blocks.
 657  */
 658 #define  ALLOW_ERASE_BAD_DEBUG 0
 659
 660 #define CONFIG_MTD_NAND_ECC  /* enable ECC */
 661 #define CONFIG_MTD_NAND_ECC_JFFS2
 662
 663 /* bits for nand_legacy_rw() `cmd'; or together as needed */
 664 #define NANDRW_READ     0x01
 665 #define NANDRW_WRITE    0x00
 666 #define NANDRW_JFFS2    0x02
 667 #define NANDRW_JFFS2_SKIP       0x04
 668
 669 /*
 670  * Imports from nand_legacy.c
 671  */
 672 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
 673 extern int curr_device;
 674 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
 675                             size_t len, int clean);
 676 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
 677                          size_t len, size_t *retlen, u_char *buf);
 678 extern void nand_print(struct nand_chip *nand);
 679 extern void nand_print_bad(struct nand_chip *nand);
 680 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
 681                                size_t len, size_t *retlen, u_char *buf);
 682 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
 683                                 size_t len, size_t *retlen, const u_char *buf);
 684
 685
 686 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 687 {
 688         int rcode = 0;
 689
 690         switch (argc) {
 691         case 0:
 692         case 1:
 693                 printf ("Usage:\n%s\n", cmdtp->usage);
 694                 return 1;
 695         case 2:
 696                 if (strcmp (argv[1], "info") == 0) {
 697                         int i;
 698
 699                         putc ('\n');
 700
 701                         for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
 702                                 if (nand_dev_desc[i].ChipID ==
 703                                     NAND_ChipID_UNKNOWN)
 704                                         continue;       /* list only known devices */
 705                                 printf ("Device %d: ", i);
 706                                 nand_print (&nand_dev_desc[i]);
 707                         }
 708                         return 0;
 709
 710                 } else if (strcmp (argv[1], "device") == 0) {
 711                         if ((curr_device < 0)
 712                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 713                                 puts ("\nno devices available\n");
 714                                 return 1;
 715                         }
 716                         printf ("\nDevice %d: ", curr_device);
 717                         nand_print (&nand_dev_desc[curr_device]);
 718                         return 0;
 719
 720                 } else if (strcmp (argv[1], "bad") == 0) {
 721                         if ((curr_device < 0)
 722                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 723                                 puts ("\nno devices available\n");
 724                                 return 1;
 725                         }
 726                         printf ("\nDevice %d bad blocks:\n", curr_device);
 727                         nand_print_bad (&nand_dev_desc[curr_device]);
 728                         return 0;
 729
 730                 }
 731                 printf ("Usage:\n%s\n", cmdtp->usage);
 732                 return 1;
 733         case 3:
 734                 if (strcmp (argv[1], "device") == 0) {
 735                         int dev = (int) simple_strtoul (argv[2], NULL, 10);
 736
 737                         printf ("\nDevice %d: ", dev);
 738                         if (dev >= CFG_MAX_NAND_DEVICE) {
 739                                 puts ("unknown device\n");
 740                                 return 1;
 741                         }
 742                         nand_print (&nand_dev_desc[dev]);
 743                         /*nand_print (dev); */
 744
 745                         if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
 746                                 return 1;
 747                         }
 748
 749                         curr_device = dev;
 750
 751                         puts ("... is now current device\n");
 752
 753                         return 0;
 754                 } else if (strcmp (argv[1], "erase") == 0
 755                            && strcmp (argv[2], "clean") == 0) {
 756                         struct nand_chip *nand = &nand_dev_desc[curr_device];
 757                         ulong off = 0;
 758                         ulong size = nand->totlen;
 759                         int ret;
 760
 761                         printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
 762
 763                         ret = nand_legacy_erase (nand, off, size, 1);
 764
 765                         printf ("%s\n", ret ? "ERROR" : "OK");
 766
 767                         return ret;
 768                 }
 769
 770                 printf ("Usage:\n%s\n", cmdtp->usage);
 771                 return 1;
 772         default:
 773                 /* at least 4 args */
 774
 775                 if (strncmp (argv[1], "read", 4) == 0 ||
 776                     strncmp (argv[1], "write", 5) == 0) {
 777                         ulong addr = simple_strtoul (argv[2], NULL, 16);
 778                         ulong off = simple_strtoul (argv[3], NULL, 16);
 779                         ulong size = simple_strtoul (argv[4], NULL, 16);
 780                         int cmd = (strncmp (argv[1], "read", 4) == 0) ?
 781                                 NANDRW_READ : NANDRW_WRITE;
 782                         int ret, total;
 783                         char *cmdtail = strchr (argv[1], '.');
 784
 785                         if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
 786                                 /* read out-of-band data */
 787                                 if (cmd & NANDRW_READ) {
 788                                         ret = nand_read_oob (nand_dev_desc + curr_device,
 789                                                              off, size, (size_t *) & total,
 790                                                              (u_char *) addr);
 791                                 } else {
 792                                         ret = nand_write_oob (nand_dev_desc + curr_device,
 793                                                               off, size, (size_t *) & total,
 794                                                               (u_char *) addr);
 795                                 }
 796                                 return ret;
 797                         } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
 798                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 799                         else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
 800                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 801                                 if (cmd & NANDRW_READ)
 802                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 803                         }
 804 #ifdef SXNI855T
 805                         /* need ".e" same as ".j" for compatibility with older units */
 806                         else if (cmdtail && !strcmp (cmdtail, ".e"))
 807                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 808 #endif
 809 #ifdef CFG_NAND_SKIP_BAD_DOT_I
 810                         /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
 811                         /* ".i" for image -> read skips bad block (no 0xff) */
 812                         else if (cmdtail && !strcmp (cmdtail, ".i")) {
 813                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 814                                 if (cmd & NANDRW_READ)
 815                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 816                         }
 817 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
 818                         else if (cmdtail) {
 819                                 printf ("Usage:\n%s\n", cmdtp->usage);
 820                                 return 1;
 821                         }
 822
 823                         printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
 824                                 (cmd & NANDRW_READ) ? "read" : "write",
 825                                 curr_device, off, size);
 826
 827                         ret = nand_legacy_rw (nand_dev_desc + curr_device,
 828                                               cmd, off, size,
 829                                               (size_t *) & total,
 830                                               (u_char *) addr);
 831
 832                         printf (" %d bytes %s: %s\n", total,
 833                                 (cmd & NANDRW_READ) ? "read" : "written",
 834                                 ret ? "ERROR" : "OK");
 835
 836                         return ret;
 837                 } else if (strcmp (argv[1], "erase") == 0 &&
 838                            (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
 839                         int clean = argc == 5;
 840                         ulong off =
 841                                 simple_strtoul (argv[2 + clean], NULL, 16);
 842                         ulong size =
 843                                 simple_strtoul (argv[3 + clean], NULL, 16);
 844                         int ret;
 845
 846                         printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
 847                                 curr_device, off, size);
 848
 849                         ret = nand_legacy_erase (nand_dev_desc + curr_device,
 850                                                  off, size, clean);
 851
 852                         printf ("%s\n", ret ? "ERROR" : "OK");
 853
 854                         return ret;
 855                 } else {
 856                         printf ("Usage:\n%s\n", cmdtp->usage);
 857                         rcode = 1;
 858                 }
 859
 860                 return rcode;
 861         }
 862 }
 863
 864 U_BOOT_CMD(
 865         nand,   5,      1,      do_nand,
 866         "nand    - legacy NAND sub-system\n",
 867         "info  - show available NAND devices\n"
 868         "nand device [dev] - show or set current device\n"
 869         "nand read[.jffs2[s]]  addr off size\n"
 870         "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
 871         "    at offset `off' to/from memory address `addr'\n"
 872         "nand erase [clean] [off size] - erase `size' bytes from\n"
 873         "    offset `off' (entire device if not specified)\n"
 874         "nand bad - show bad blocks\n"
 875         "nand read.oob addr off size - read out-of-band data\n"
 876         "nand write.oob addr off size - read out-of-band data\n"
 877 );
 878
 879 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 880 {
 881         char *boot_device = NULL;
 882         char *ep;
 883         int dev;
 884         ulong cnt;
 885         ulong addr;
 886         ulong offset = 0;
 887         image_header_t *hdr;
 888         int rcode = 0;
 889         show_boot_progress (52);
 890         switch (argc) {
 891         case 1:
 892                 addr = CFG_LOAD_ADDR;
 893                 boot_device = getenv ("bootdevice");
 894                 break;
 895         case 2:
 896                 addr = simple_strtoul(argv[1], NULL, 16);
 897                 boot_device = getenv ("bootdevice");
 898                 break;
 899         case 3:
 900                 addr = simple_strtoul(argv[1], NULL, 16);
 901                 boot_device = argv[2];
 902                 break;
 903         case 4:
 904                 addr = simple_strtoul(argv[1], NULL, 16);
 905                 boot_device = argv[2];
 906                 offset = simple_strtoul(argv[3], NULL, 16);
 907                 break;
 908         default:
 909                 printf ("Usage:\n%s\n", cmdtp->usage);
 910                 show_boot_progress (-53);
 911                 return 1;
 912         }
 913
 914         show_boot_progress (53);
 915         if (!boot_device) {
 916                 puts ("\n** No boot device **\n");
 917                 show_boot_progress (-54);
 918                 return 1;
 919         }
 920         show_boot_progress (54);
 921
 922         dev = simple_strtoul(boot_device, &ep, 16);
 923
 924         if ((dev >= CFG_MAX_NAND_DEVICE) ||
 925             (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
 926                 printf ("\n** Device %d not available\n", dev);
 927                 show_boot_progress (-55);
 928                 return 1;
 929         }
 930         show_boot_progress (55);
 931
 932         printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
 933                 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
 934                 offset);
 935
 936         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 937                         SECTORSIZE, NULL, (u_char *)addr)) {
 938                 printf ("** Read error on %d\n", dev);
 939                 show_boot_progress (-56);
 940                 return 1;
 941         }
 942         show_boot_progress (56);
 943
 944         hdr = (image_header_t *)addr;
 945
 946         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
 947
 948                 print_image_hdr (hdr);
 949
 950                 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
 951                 cnt -= SECTORSIZE;
 952         } else {
 953                 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
 954                 show_boot_progress (-57);
 955                 return 1;
 956         }
 957         show_boot_progress (57);
 958
 959         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
 960                         offset + SECTORSIZE, cnt, NULL,
 961                         (u_char *)(addr+SECTORSIZE))) {
 962                 printf ("** Read error on %d\n", dev);
 963                 show_boot_progress (-58);
 964                 return 1;
 965         }
 966         show_boot_progress (58);
 967
 968         /* Loading ok, update default load address */
 969
 970         load_addr = addr;
 971
 972         /* Check if we should attempt an auto-start */
 973         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 974                 char *local_args[2];
 975                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 976
 977                 local_args[0] = argv[0];
 978                 local_args[1] = NULL;
 979
 980                 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
 981
 982                 do_bootm (cmdtp, 0, 1, local_args);
 983                 rcode = 1;
 984         }
 985         return rcode;
 986 }
 987
 988 U_BOOT_CMD(
 989         nboot,  4,      1,      do_nandboot,
 990         "nboot   - boot from NAND device\n",
 991         "loadAddr dev\n"
 992 );
 993
 994 #endif
 995
 996 #endif /* CFG_NAND_LEGACY */