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 #ifdef CFG_NAND_QUIET
 165         int quiet = CFG_NAND_QUIET;
 166 #else
 167         int quiet = 0;
 168 #endif
 169         const char *quiet_str = getenv("quiet");
 170
 171         /* at least two arguments please */
 172         if (argc < 2)
 173                 goto usage;
 174
 175         if (quiet_str)
 176                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
 177
 178         cmd = argv[1];
 179
 180         if (strcmp(cmd, "info") == 0) {
 181
 182                 putc('\n');
 183                 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 184                         if (nand_info[i].name)
 185                                 printf("Device %d: %s, sector size %lu KiB\n",
 186                                         i, nand_info[i].name,
 187                                         nand_info[i].erasesize >> 10);
 188                 }
 189                 return 0;
 190         }
 191
 192         if (strcmp(cmd, "device") == 0) {
 193
 194                 if (argc < 3) {
 195                         if ((nand_curr_device < 0) ||
 196                             (nand_curr_device >= CFG_MAX_NAND_DEVICE))
 197                                 puts("\nno devices available\n");
 198                         else
 199                                 printf("\nDevice %d: %s\n", nand_curr_device,
 200                                         nand_info[nand_curr_device].name);
 201                         return 0;
 202                 }
 203                 dev = (int)simple_strtoul(argv[2], NULL, 10);
 204                 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
 205                         puts("No such device\n");
 206                         return 1;
 207                 }
 208                 printf("Device %d: %s", dev, nand_info[dev].name);
 209                 puts("... is now current device\n");
 210                 nand_curr_device = dev;
 211
 212 #ifdef CFG_NAND_SELECT_DEVICE
 213                 /*
 214                  * Select the chip in the board/cpu specific driver
 215                  */
 216                 board_nand_select_device(nand_info[dev].priv, dev);
 217 #endif
 218
 219                 return 0;
 220         }
 221
 222         if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
 223             strncmp(cmd, "dump", 4) != 0 &&
 224             strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
 225             strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
 226             strcmp(cmd, "biterr") != 0 &&
 227             strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
 228                 goto usage;
 229
 230         /* the following commands operate on the current device */
 231         if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
 232             !nand_info[nand_curr_device].name) {
 233                 puts("\nno devices available\n");
 234                 return 1;
 235         }
 236         nand = &nand_info[nand_curr_device];
 237
 238         if (strcmp(cmd, "bad") == 0) {
 239                 printf("\nDevice %d bad blocks:\n", nand_curr_device);
 240                 for (off = 0; off < nand->size; off += nand->erasesize)
 241                         if (nand_block_isbad(nand, off))
 242                                 printf("  %08x\n", off);
 243                 return 0;
 244         }
 245
 246         /*
 247          * Syntax is:
 248          *   0    1     2       3    4
 249          *   nand erase [clean] [off size]
 250          */
 251         if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
 252                 nand_erase_options_t opts;
 253                 /* "clean" at index 2 means request to write cleanmarker */
 254                 int clean = argc > 2 && !strcmp("clean", argv[2]);
 255                 int o = clean ? 3 : 2;
 256                 int scrub = !strcmp(cmd, "scrub");
 257
 258                 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
 259                 /* skip first two or three arguments, look for offset and size */
 260                 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
 261                         return 1;
 262
 263                 memset(&opts, 0, sizeof(opts));
 264                 opts.offset = off;
 265                 opts.length = size;
 266                 opts.jffs2  = clean;
 267                 opts.quiet  = quiet;
 268
 269                 if (scrub) {
 270                         puts("Warning: "
 271                              "scrub option will erase all factory set "
 272                              "bad blocks!\n"
 273                              "         "
 274                              "There is no reliable way to recover them.\n"
 275                              "         "
 276                              "Use this command only for testing purposes "
 277                              "if you\n"
 278                              "         "
 279                              "are sure of what you are doing!\n"
 280                              "\nReally scrub this NAND flash? <y/N>\n");
 281
 282                         if (getc() == 'y' && getc() == '\r') {
 283                                 opts.scrub = 1;
 284                         } else {
 285                                 puts("scrub aborted\n");
 286                                 return -1;
 287                         }
 288                 }
 289                 ret = nand_erase_opts(nand, &opts);
 290                 printf("%s\n", ret ? "ERROR" : "OK");
 291
 292                 return ret == 0 ? 0 : 1;
 293         }
 294
 295         if (strncmp(cmd, "dump", 4) == 0) {
 296                 if (argc < 3)
 297                         goto usage;
 298
 299                 s = strchr(cmd, '.');
 300                 off = (int)simple_strtoul(argv[2], NULL, 16);
 301
 302                 if (s != NULL && strcmp(s, ".oob") == 0)
 303                         ret = nand_dump_oob(nand, off);
 304                 else
 305                         ret = nand_dump(nand, off);
 306
 307                 return ret == 0 ? 1 : 0;
 308
 309         }
 310
 311         /* read write */
 312         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 313                 int read;
 314
 315                 if (argc < 4)
 316                         goto usage;
 317
 318                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 319
 320                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 321                 printf("\nNAND %s: ", read ? "read" : "write");
 322                 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
 323                         return 1;
 324
 325                 s = strchr(cmd, '.');
 326                 if (s != NULL &&
 327                     (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
 328                         if (read) {
 329                                 /* read */
 330                                 nand_read_options_t opts;
 331                                 memset(&opts, 0, sizeof(opts));
 332                                 opts.buffer     = (u_char*) addr;
 333                                 opts.length     = size;
 334                                 opts.offset     = off;
 335                                 opts.quiet      = quiet;
 336                                 ret = nand_read_opts(nand, &opts);
 337                         } else {
 338                                 /* write */
 339                                 nand_write_options_t opts;
 340                                 memset(&opts, 0, sizeof(opts));
 341                                 opts.buffer     = (u_char*) addr;
 342                                 opts.length     = size;
 343                                 opts.offset     = off;
 344                                 /* opts.forcejffs2 = 1; */
 345                                 opts.pad        = 1;
 346                                 opts.blockalign = 1;
 347                                 opts.quiet      = quiet;
 348                                 ret = nand_write_opts(nand, &opts);
 349                         }
 350                 } else if (s != NULL && !strcmp(s, ".oob")) {
 351                         /* read out-of-band data */
 352                         if (read)
 353                                 ret = nand->read_oob(nand, off, size, (size_t *) &size,
 354                                                      (u_char *) addr);
 355                         else
 356                                 ret = nand->write_oob(nand, off, size, (size_t *) &size,
 357                                                       (u_char *) addr);
 358                 } else {
 359                         if (read)
 360                                 ret = nand_read(nand, off, &size, (u_char *)addr);
 361                         else
 362                                 ret = nand_write(nand, off, &size, (u_char *)addr);
 363                 }
 364
 365                 printf(" %d bytes %s: %s\n", size,
 366                        read ? "read" : "written", ret ? "ERROR" : "OK");
 367
 368                 return ret == 0 ? 0 : 1;
 369         }
 370
 371         if (strcmp(cmd, "markbad") == 0) {
 372                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 373
 374                 int ret = nand->block_markbad(nand, addr);
 375                 if (ret == 0) {
 376                         printf("block 0x%08lx successfully marked as bad\n",
 377                                (ulong) addr);
 378                         return 0;
 379                 } else {
 380                         printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
 381                                (ulong) addr, ret);
 382                 }
 383                 return 1;
 384         }
 385         if (strcmp(cmd, "biterr") == 0) {
 386                 /* todo */
 387                 return 1;
 388         }
 389
 390         if (strcmp(cmd, "lock") == 0) {
 391                 int tight  = 0;
 392                 int status = 0;
 393                 if (argc == 3) {
 394                         if (!strcmp("tight", argv[2]))
 395                                 tight = 1;
 396                         if (!strcmp("status", argv[2]))
 397                                 status = 1;
 398                 }
 399
 400                 if (status) {
 401                         ulong block_start = 0;
 402                         ulong off;
 403                         int last_status = -1;
 404
 405                         struct nand_chip *nand_chip = nand->priv;
 406                         /* check the WP bit */
 407                         nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
 408                         printf("device is %swrite protected\n",
 409                                (nand_chip->read_byte(nand) & 0x80 ?
 410                                 "NOT " : "" ) );
 411
 412                         for (off = 0; off < nand->size; off += nand->oobblock) {
 413                                 int s = nand_get_lock_status(nand, off);
 414
 415                                 /* print message only if status has changed
 416                                  * or at end of chip
 417                                  */
 418                                 if (off == nand->size - nand->oobblock
 419                                     || (s != last_status && off != 0))  {
 420
 421                                         printf("%08x - %08x: %8d pages %s%s%s\n",
 422                                                block_start,
 423                                                off-1,
 424                                                (off-block_start)/nand->oobblock,
 425                                                ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
 426                                                ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
 427                                                ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
 428                                 }
 429
 430                                 last_status = s;
 431                        }
 432                 } else {
 433                         if (!nand_lock(nand, tight)) {
 434                                 puts("NAND flash successfully locked\n");
 435                         } else {
 436                                 puts("Error locking NAND flash\n");
 437                                 return 1;
 438                         }
 439                 }
 440                 return 0;
 441         }
 442
 443         if (strcmp(cmd, "unlock") == 0) {
 444                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
 445                         return 1;
 446
 447                 if (!nand_unlock(nand, off, size)) {
 448                         puts("NAND flash successfully unlocked\n");
 449                 } else {
 450                         puts("Error unlocking NAND flash, "
 451                              "write and erase will probably fail\n");
 452                         return 1;
 453                 }
 454                 return 0;
 455         }
 456
 457 usage:
 458         printf("Usage:\n%s\n", cmdtp->usage);
 459         return 1;
 460 }
 461
 462 U_BOOT_CMD(nand, 5, 1, do_nand,
 463         "nand    - NAND sub-system\n",
 464         "info                  - show available NAND devices\n"
 465         "nand device [dev]     - show or set current device\n"
 466         "nand read[.jffs2]     - addr off|partition size\n"
 467         "nand write[.jffs2]    - addr off|partition size - read/write `size' bytes starting\n"
 468         "    at offset `off' to/from memory address `addr'\n"
 469         "nand erase [clean] [off size] - erase `size' bytes from\n"
 470         "    offset `off' (entire device if not specified)\n"
 471         "nand bad - show bad blocks\n"
 472         "nand dump[.oob] off - dump page\n"
 473         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
 474         "nand markbad off - mark bad block at offset (UNSAFE)\n"
 475         "nand biterr off - make a bit error at offset (UNSAFE)\n"
 476         "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
 477         "nand unlock [offset] [size] - unlock section\n");
 478
 479 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 480                            ulong offset, ulong addr, char *cmd)
 481 {
 482         int r;
 483         char *ep, *s;
 484         ulong cnt;
 485         image_header_t *hdr;
 486         int jffs2 = 0;
 487
 488         s = strchr(cmd, '.');
 489         if (s != NULL &&
 490             (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")))
 491                 jffs2 = 1;
 492
 493         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 494
 495         cnt = nand->oobblock;
 496         if (jffs2) {
 497                 nand_read_options_t opts;
 498                 memset(&opts, 0, sizeof(opts));
 499                 opts.buffer     = (u_char*) addr;
 500                 opts.length     = cnt;
 501                 opts.offset     = offset;
 502                 opts.quiet      = 1;
 503                 r = nand_read_opts(nand, &opts);
 504         } else {
 505                 r = nand_read(nand, offset, &cnt, (u_char *) addr);
 506         }
 507
 508         if (r) {
 509                 puts("** Read error\n");
 510                 show_boot_progress (-56);
 511                 return 1;
 512         }
 513         show_boot_progress (56);
 514
 515         switch (gen_image_get_format ((void *)addr)) {
 516         case IMAGE_FORMAT_LEGACY:
 517                 hdr = (image_header_t *)addr;
 518
 519                 if (!image_check_magic (hdr)) {
 520                         printf("\n** Bad Magic Number 0x%x **\n",
 521                                         image_get_magic (hdr));
 522                         show_boot_progress (-57);
 523                         return 1;
 524                 }
 525                 show_boot_progress (57);
 526
 527                 image_print_contents (hdr);
 528
 529                 cnt = image_get_image_size (hdr);
 530                 break;
 531 #if defined(CONFIG_FIT)
 532         case IMAGE_FORMAT_FIT:
 533                 fit_unsupported ("nand_load_image");
 534                 return 1;
 535 #endif
 536         default:
 537                 puts ("** Unknown image type\n");
 538                 return 1;
 539         }
 540
 541         if (jffs2) {
 542                 nand_read_options_t opts;
 543                 memset(&opts, 0, sizeof(opts));
 544                 opts.buffer     = (u_char*) addr;
 545                 opts.length     = cnt;
 546                 opts.offset     = offset;
 547                 opts.quiet      = 1;
 548                 r = nand_read_opts(nand, &opts);
 549         } else {
 550                 r = nand_read(nand, offset, &cnt, (u_char *) addr);
 551         }
 552
 553         if (r) {
 554                 puts("** Read error\n");
 555                 show_boot_progress (-58);
 556                 return 1;
 557         }
 558         show_boot_progress (58);
 559
 560         /* Loading ok, update default load address */
 561
 562         load_addr = addr;
 563
 564         /* Check if we should attempt an auto-start */
 565         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 566                 char *local_args[2];
 567                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 568
 569                 local_args[0] = cmd;
 570                 local_args[1] = NULL;
 571
 572                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 573
 574                 do_bootm(cmdtp, 0, 1, local_args);
 575                 return 1;
 576         }
 577         return 0;
 578 }
 579
 580 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 581 {
 582         char *boot_device = NULL;
 583         int idx;
 584         ulong addr, offset = 0;
 585 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 586         struct mtd_device *dev;
 587         struct part_info *part;
 588         u8 pnum;
 589
 590         if (argc >= 2) {
 591                 char *p = (argc == 2) ? argv[1] : argv[2];
 592                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 593                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 594                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 595                                 puts("Not a NAND device\n");
 596                                 return 1;
 597                         }
 598                         if (argc > 3)
 599                                 goto usage;
 600                         if (argc == 3)
 601                                 addr = simple_strtoul(argv[1], NULL, 16);
 602                         else
 603                                 addr = CFG_LOAD_ADDR;
 604                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 605                                                part->offset, addr, argv[0]);
 606                 }
 607         }
 608 #endif
 609
 610         show_boot_progress(52);
 611         switch (argc) {
 612         case 1:
 613                 addr = CFG_LOAD_ADDR;
 614                 boot_device = getenv("bootdevice");
 615                 break;
 616         case 2:
 617                 addr = simple_strtoul(argv[1], NULL, 16);
 618                 boot_device = getenv("bootdevice");
 619                 break;
 620         case 3:
 621                 addr = simple_strtoul(argv[1], NULL, 16);
 622                 boot_device = argv[2];
 623                 break;
 624         case 4:
 625                 addr = simple_strtoul(argv[1], NULL, 16);
 626                 boot_device = argv[2];
 627                 offset = simple_strtoul(argv[3], NULL, 16);
 628                 break;
 629         default:
 630 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 631 usage:
 632 #endif
 633                 printf("Usage:\n%s\n", cmdtp->usage);
 634                 show_boot_progress(-53);
 635                 return 1;
 636         }
 637
 638         show_boot_progress(53);
 639         if (!boot_device) {
 640                 puts("\n** No boot device **\n");
 641                 show_boot_progress(-54);
 642                 return 1;
 643         }
 644         show_boot_progress(54);
 645
 646         idx = simple_strtoul(boot_device, NULL, 16);
 647
 648         if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
 649                 printf("\n** Device %d not available\n", idx);
 650                 show_boot_progress(-55);
 651                 return 1;
 652         }
 653         show_boot_progress(55);
 654
 655         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 656 }
 657
 658 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 659         "nboot   - boot from NAND device\n",
 660         "[.jffs2] [partition] | [[[loadAddr] dev] offset]\n");
 661
 662 #endif
 663
 664 #else /* CFG_NAND_LEGACY */
 665 /*
 666  *
 667  * Legacy NAND support - to be phased out
 668  *
 669  */
 670 #include <command.h>
 671 #include <malloc.h>
 672 #include <asm/io.h>
 673 #include <watchdog.h>
 674
 675 #ifdef CONFIG_show_boot_progress
 676 # include <status_led.h>
 677 # define show_boot_progress(arg)        show_boot_progress(arg)
 678 #else
 679 # define show_boot_progress(arg)
 680 #endif
 681
 682 #if defined(CONFIG_CMD_NAND)
 683 #include <linux/mtd/nand_legacy.h>
 684 #if 0
 685 #include <linux/mtd/nand_ids.h>
 686 #include <jffs2/jffs2.h>
 687 #endif
 688
 689 #ifdef CONFIG_OMAP1510
 690 void archflashwp(void *archdata, int wp);
 691 #endif
 692
 693 #define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
 694
 695 #undef  NAND_DEBUG
 696 #undef  PSYCHO_DEBUG
 697
 698 /* ****************** WARNING *********************
 699  * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
 700  * erase (or at least attempt to erase) blocks that are marked
 701  * bad. This can be very handy if you are _sure_ that the block
 702  * is OK, say because you marked a good block bad to test bad
 703  * block handling and you are done testing, or if you have
 704  * accidentally marked blocks bad.
 705  *
 706  * Erasing factory marked bad blocks is a _bad_ idea. If the
 707  * erase succeeds there is no reliable way to find them again,
 708  * and attempting to program or erase bad blocks can affect
 709  * the data in _other_ (good) blocks.
 710  */
 711 #define  ALLOW_ERASE_BAD_DEBUG 0
 712
 713 #define CONFIG_MTD_NAND_ECC  /* enable ECC */
 714 #define CONFIG_MTD_NAND_ECC_JFFS2
 715
 716 /* bits for nand_legacy_rw() `cmd'; or together as needed */
 717 #define NANDRW_READ     0x01
 718 #define NANDRW_WRITE    0x00
 719 #define NANDRW_JFFS2    0x02
 720 #define NANDRW_JFFS2_SKIP       0x04
 721
 722 /*
 723  * Imports from nand_legacy.c
 724  */
 725 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
 726 extern int curr_device;
 727 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
 728                             size_t len, int clean);
 729 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
 730                          size_t len, size_t *retlen, u_char *buf);
 731 extern void nand_print(struct nand_chip *nand);
 732 extern void nand_print_bad(struct nand_chip *nand);
 733 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
 734                                size_t len, size_t *retlen, u_char *buf);
 735 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
 736                                 size_t len, size_t *retlen, const u_char *buf);
 737
 738
 739 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 740 {
 741         int rcode = 0;
 742
 743         switch (argc) {
 744         case 0:
 745         case 1:
 746                 printf ("Usage:\n%s\n", cmdtp->usage);
 747                 return 1;
 748         case 2:
 749                 if (strcmp (argv[1], "info") == 0) {
 750                         int i;
 751
 752                         putc ('\n');
 753
 754                         for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
 755                                 if (nand_dev_desc[i].ChipID ==
 756                                     NAND_ChipID_UNKNOWN)
 757                                         continue;       /* list only known devices */
 758                                 printf ("Device %d: ", i);
 759                                 nand_print (&nand_dev_desc[i]);
 760                         }
 761                         return 0;
 762
 763                 } else if (strcmp (argv[1], "device") == 0) {
 764                         if ((curr_device < 0)
 765                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 766                                 puts ("\nno devices available\n");
 767                                 return 1;
 768                         }
 769                         printf ("\nDevice %d: ", curr_device);
 770                         nand_print (&nand_dev_desc[curr_device]);
 771                         return 0;
 772
 773                 } else if (strcmp (argv[1], "bad") == 0) {
 774                         if ((curr_device < 0)
 775                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 776                                 puts ("\nno devices available\n");
 777                                 return 1;
 778                         }
 779                         printf ("\nDevice %d bad blocks:\n", curr_device);
 780                         nand_print_bad (&nand_dev_desc[curr_device]);
 781                         return 0;
 782
 783                 }
 784                 printf ("Usage:\n%s\n", cmdtp->usage);
 785                 return 1;
 786         case 3:
 787                 if (strcmp (argv[1], "device") == 0) {
 788                         int dev = (int) simple_strtoul (argv[2], NULL, 10);
 789
 790                         printf ("\nDevice %d: ", dev);
 791                         if (dev >= CFG_MAX_NAND_DEVICE) {
 792                                 puts ("unknown device\n");
 793                                 return 1;
 794                         }
 795                         nand_print (&nand_dev_desc[dev]);
 796                         /*nand_print (dev); */
 797
 798                         if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
 799                                 return 1;
 800                         }
 801
 802                         curr_device = dev;
 803
 804                         puts ("... is now current device\n");
 805
 806                         return 0;
 807                 } else if (strcmp (argv[1], "erase") == 0
 808                            && strcmp (argv[2], "clean") == 0) {
 809                         struct nand_chip *nand = &nand_dev_desc[curr_device];
 810                         ulong off = 0;
 811                         ulong size = nand->totlen;
 812                         int ret;
 813
 814                         printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
 815
 816                         ret = nand_legacy_erase (nand, off, size, 1);
 817
 818                         printf ("%s\n", ret ? "ERROR" : "OK");
 819
 820                         return ret;
 821                 }
 822
 823                 printf ("Usage:\n%s\n", cmdtp->usage);
 824                 return 1;
 825         default:
 826                 /* at least 4 args */
 827
 828                 if (strncmp (argv[1], "read", 4) == 0 ||
 829                     strncmp (argv[1], "write", 5) == 0) {
 830                         ulong addr = simple_strtoul (argv[2], NULL, 16);
 831                         ulong off = simple_strtoul (argv[3], NULL, 16);
 832                         ulong size = simple_strtoul (argv[4], NULL, 16);
 833                         int cmd = (strncmp (argv[1], "read", 4) == 0) ?
 834                                 NANDRW_READ : NANDRW_WRITE;
 835                         int ret, total;
 836                         char *cmdtail = strchr (argv[1], '.');
 837
 838                         if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
 839                                 /* read out-of-band data */
 840                                 if (cmd & NANDRW_READ) {
 841                                         ret = nand_read_oob (nand_dev_desc + curr_device,
 842                                                              off, size, (size_t *) & total,
 843                                                              (u_char *) addr);
 844                                 } else {
 845                                         ret = nand_write_oob (nand_dev_desc + curr_device,
 846                                                               off, size, (size_t *) & total,
 847                                                               (u_char *) addr);
 848                                 }
 849                                 return ret;
 850                         } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
 851                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 852                         else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
 853                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 854                                 if (cmd & NANDRW_READ)
 855                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 856                         }
 857 #ifdef SXNI855T
 858                         /* need ".e" same as ".j" for compatibility with older units */
 859                         else if (cmdtail && !strcmp (cmdtail, ".e"))
 860                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 861 #endif
 862 #ifdef CFG_NAND_SKIP_BAD_DOT_I
 863                         /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
 864                         /* ".i" for image -> read skips bad block (no 0xff) */
 865                         else if (cmdtail && !strcmp (cmdtail, ".i")) {
 866                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 867                                 if (cmd & NANDRW_READ)
 868                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 869                         }
 870 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
 871                         else if (cmdtail) {
 872                                 printf ("Usage:\n%s\n", cmdtp->usage);
 873                                 return 1;
 874                         }
 875
 876                         printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
 877                                 (cmd & NANDRW_READ) ? "read" : "write",
 878                                 curr_device, off, size);
 879
 880                         ret = nand_legacy_rw (nand_dev_desc + curr_device,
 881                                               cmd, off, size,
 882                                               (size_t *) & total,
 883                                               (u_char *) addr);
 884
 885                         printf (" %d bytes %s: %s\n", total,
 886                                 (cmd & NANDRW_READ) ? "read" : "written",
 887                                 ret ? "ERROR" : "OK");
 888
 889                         return ret;
 890                 } else if (strcmp (argv[1], "erase") == 0 &&
 891                            (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
 892                         int clean = argc == 5;
 893                         ulong off =
 894                                 simple_strtoul (argv[2 + clean], NULL, 16);
 895                         ulong size =
 896                                 simple_strtoul (argv[3 + clean], NULL, 16);
 897                         int ret;
 898
 899                         printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
 900                                 curr_device, off, size);
 901
 902                         ret = nand_legacy_erase (nand_dev_desc + curr_device,
 903                                                  off, size, clean);
 904
 905                         printf ("%s\n", ret ? "ERROR" : "OK");
 906
 907                         return ret;
 908                 } else {
 909                         printf ("Usage:\n%s\n", cmdtp->usage);
 910                         rcode = 1;
 911                 }
 912
 913                 return rcode;
 914         }
 915 }
 916
 917 U_BOOT_CMD(
 918         nand,   5,      1,      do_nand,
 919         "nand    - legacy NAND sub-system\n",
 920         "info  - show available NAND devices\n"
 921         "nand device [dev] - show or set current device\n"
 922         "nand read[.jffs2[s]]  addr off size\n"
 923         "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
 924         "    at offset `off' to/from memory address `addr'\n"
 925         "nand erase [clean] [off size] - erase `size' bytes from\n"
 926         "    offset `off' (entire device if not specified)\n"
 927         "nand bad - show bad blocks\n"
 928         "nand read.oob addr off size - read out-of-band data\n"
 929         "nand write.oob addr off size - read out-of-band data\n"
 930 );
 931
 932 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 933 {
 934         char *boot_device = NULL;
 935         char *ep;
 936         int dev;
 937         ulong cnt;
 938         ulong addr;
 939         ulong offset = 0;
 940         image_header_t *hdr;
 941         int rcode = 0;
 942         show_boot_progress (52);
 943         switch (argc) {
 944         case 1:
 945                 addr = CFG_LOAD_ADDR;
 946                 boot_device = getenv ("bootdevice");
 947                 break;
 948         case 2:
 949                 addr = simple_strtoul(argv[1], NULL, 16);
 950                 boot_device = getenv ("bootdevice");
 951                 break;
 952         case 3:
 953                 addr = simple_strtoul(argv[1], NULL, 16);
 954                 boot_device = argv[2];
 955                 break;
 956         case 4:
 957                 addr = simple_strtoul(argv[1], NULL, 16);
 958                 boot_device = argv[2];
 959                 offset = simple_strtoul(argv[3], NULL, 16);
 960                 break;
 961         default:
 962                 printf ("Usage:\n%s\n", cmdtp->usage);
 963                 show_boot_progress (-53);
 964                 return 1;
 965         }
 966
 967         show_boot_progress (53);
 968         if (!boot_device) {
 969                 puts ("\n** No boot device **\n");
 970                 show_boot_progress (-54);
 971                 return 1;
 972         }
 973         show_boot_progress (54);
 974
 975         dev = simple_strtoul(boot_device, &ep, 16);
 976
 977         if ((dev >= CFG_MAX_NAND_DEVICE) ||
 978             (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
 979                 printf ("\n** Device %d not available\n", dev);
 980                 show_boot_progress (-55);
 981                 return 1;
 982         }
 983         show_boot_progress (55);
 984
 985         printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
 986                 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
 987                 offset);
 988
 989         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 990                         SECTORSIZE, NULL, (u_char *)addr)) {
 991                 printf ("** Read error on %d\n", dev);
 992                 show_boot_progress (-56);
 993                 return 1;
 994         }
 995         show_boot_progress (56);
 996
 997         switch (gen_image_get_format ((void *)addr)) {
 998         case IMAGE_FORMAT_LEGACY:
 999                 hdr = (image_header_t *)addr;
1000
1001                 if (image_check_magic (hdr)) {
1002
1003                         image_print_contents (hdr);
1004
1005                         cnt = image_get_image_size (hdr);
1006                         cnt -= SECTORSIZE;
1007                 } else {
1008                         printf ("\n** Bad Magic Number 0x%x **\n",
1009                                         image_get_magic (hdr));
1010                         show_boot_progress (-57);
1011                         return 1;
1012                 }
1013                 break;
1014 #if defined(CONFIG_FIT)
1015         case IMAGE_FORMAT_FIT:
1016                 fit_unsupported ("nboot");
1017                 return 1;
1018 #endif
1019         default:
1020                 puts ("** Unknown image type\n");
1021                 return 1;
1022         }
1023         show_boot_progress (57);
1024
1025         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
1026                         offset + SECTORSIZE, cnt, NULL,
1027                         (u_char *)(addr+SECTORSIZE))) {
1028                 printf ("** Read error on %d\n", dev);
1029                 show_boot_progress (-58);
1030                 return 1;
1031         }
1032         show_boot_progress (58);
1033
1034         /* Loading ok, update default load address */
1035
1036         load_addr = addr;
1037
1038         /* Check if we should attempt an auto-start */
1039         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
1040                 char *local_args[2];
1041                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
1042
1043                 local_args[0] = argv[0];
1044                 local_args[1] = NULL;
1045
1046                 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
1047
1048                 do_bootm (cmdtp, 0, 1, local_args);
1049                 rcode = 1;
1050         }
1051         return rcode;
1052 }
1053
1054 U_BOOT_CMD(
1055         nboot,  4,      1,      do_nandboot,
1056         "nboot   - boot from NAND device\n",
1057         "loadAddr dev\n"
1058 );
1059
1060 #endif
1061
1062 #endif /* CFG_NAND_LEGACY */