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 {
 351                         if (read)
 352                                 ret = nand_read(nand, off, &size, (u_char *)addr);
 353                         else
 354                                 ret = nand_write(nand, off, &size, (u_char *)addr);
 355                 }
 356
 357                 printf(" %d bytes %s: %s\n", size,
 358                        read ? "read" : "written", ret ? "ERROR" : "OK");
 359
 360                 return ret == 0 ? 0 : 1;
 361         }
 362
 363         if (strcmp(cmd, "markbad") == 0) {
 364                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
 365
 366                 int ret = nand->block_markbad(nand, addr);
 367                 if (ret == 0) {
 368                         printf("block 0x%08lx successfully marked as bad\n",
 369                                (ulong) addr);
 370                         return 0;
 371                 } else {
 372                         printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
 373                                (ulong) addr, ret);
 374                 }
 375                 return 1;
 376         }
 377         if (strcmp(cmd, "biterr") == 0) {
 378                 /* todo */
 379                 return 1;
 380         }
 381
 382         if (strcmp(cmd, "lock") == 0) {
 383                 int tight  = 0;
 384                 int status = 0;
 385                 if (argc == 3) {
 386                         if (!strcmp("tight", argv[2]))
 387                                 tight = 1;
 388                         if (!strcmp("status", argv[2]))
 389                                 status = 1;
 390                 }
 391
 392                 if (status) {
 393                         ulong block_start = 0;
 394                         ulong off;
 395                         int last_status = -1;
 396
 397                         struct nand_chip *nand_chip = nand->priv;
 398                         /* check the WP bit */
 399                         nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
 400                         printf("device is %swrite protected\n",
 401                                (nand_chip->read_byte(nand) & 0x80 ?
 402                                 "NOT " : "" ) );
 403
 404                         for (off = 0; off < nand->size; off += nand->oobblock) {
 405                                 int s = nand_get_lock_status(nand, off);
 406
 407                                 /* print message only if status has changed
 408                                  * or at end of chip
 409                                  */
 410                                 if (off == nand->size - nand->oobblock
 411                                     || (s != last_status && off != 0))  {
 412
 413                                         printf("%08x - %08x: %8d pages %s%s%s\n",
 414                                                block_start,
 415                                                off-1,
 416                                                (off-block_start)/nand->oobblock,
 417                                                ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
 418                                                ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
 419                                                ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
 420                                 }
 421
 422                                 last_status = s;
 423                        }
 424                 } else {
 425                         if (!nand_lock(nand, tight)) {
 426                                 puts("NAND flash successfully locked\n");
 427                         } else {
 428                                 puts("Error locking NAND flash\n");
 429                                 return 1;
 430                         }
 431                 }
 432                 return 0;
 433         }
 434
 435         if (strcmp(cmd, "unlock") == 0) {
 436                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
 437                         return 1;
 438
 439                 if (!nand_unlock(nand, off, size)) {
 440                         puts("NAND flash successfully unlocked\n");
 441                 } else {
 442                         puts("Error unlocking NAND flash, "
 443                              "write and erase will probably fail\n");
 444                         return 1;
 445                 }
 446                 return 0;
 447         }
 448
 449 usage:
 450         printf("Usage:\n%s\n", cmdtp->usage);
 451         return 1;
 452 }
 453
 454 U_BOOT_CMD(nand, 5, 1, do_nand,
 455         "nand    - NAND sub-system\n",
 456         "info                  - show available NAND devices\n"
 457         "nand device [dev]     - show or set current device\n"
 458         "nand read[.jffs2]     - addr off|partition size\n"
 459         "nand write[.jffs2]    - addr off|partition size - read/write `size' bytes starting\n"
 460         "    at offset `off' to/from memory address `addr'\n"
 461         "nand erase [clean] [off size] - erase `size' bytes from\n"
 462         "    offset `off' (entire device if not specified)\n"
 463         "nand bad - show bad blocks\n"
 464         "nand dump[.oob] off - dump page\n"
 465         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
 466         "nand markbad off - mark bad block at offset (UNSAFE)\n"
 467         "nand biterr off - make a bit error at offset (UNSAFE)\n"
 468         "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
 469         "nand unlock [offset] [size] - unlock section\n");
 470
 471 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 472                            ulong offset, ulong addr, char *cmd)
 473 {
 474         int r;
 475         char *ep, *s;
 476         ulong cnt;
 477         image_header_t *hdr;
 478         int jffs2 = 0;
 479
 480         s = strchr(cmd, '.');
 481         if (s != NULL &&
 482             (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")))
 483                 jffs2 = 1;
 484
 485         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 486
 487         cnt = nand->oobblock;
 488         if (jffs2) {
 489                 nand_read_options_t opts;
 490                 memset(&opts, 0, sizeof(opts));
 491                 opts.buffer     = (u_char*) addr;
 492                 opts.length     = cnt;
 493                 opts.offset     = offset;
 494                 opts.quiet      = 1;
 495                 r = nand_read_opts(nand, &opts);
 496         } else {
 497                 r = nand_read(nand, offset, &cnt, (u_char *) addr);
 498         }
 499
 500         if (r) {
 501                 puts("** Read error\n");
 502                 show_boot_progress (-56);
 503                 return 1;
 504         }
 505         show_boot_progress (56);
 506
 507         hdr = (image_header_t *) addr;
 508
 509         if (ntohl(hdr->ih_magic) != IH_MAGIC) {
 510                 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
 511                 show_boot_progress (-57);
 512                 return 1;
 513         }
 514         show_boot_progress (57);
 515
 516         print_image_hdr(hdr);
 517
 518         cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
 519         if (jffs2) {
 520                 nand_read_options_t opts;
 521                 memset(&opts, 0, sizeof(opts));
 522                 opts.buffer     = (u_char*) addr;
 523                 opts.length     = cnt;
 524                 opts.offset     = offset;
 525                 opts.quiet      = 1;
 526                 r = nand_read_opts(nand, &opts);
 527         } else {
 528                 r = nand_read(nand, offset, &cnt, (u_char *) addr);
 529         }
 530
 531         if (r) {
 532                 puts("** Read error\n");
 533                 show_boot_progress (-58);
 534                 return 1;
 535         }
 536         show_boot_progress (58);
 537
 538         /* Loading ok, update default load address */
 539
 540         load_addr = addr;
 541
 542         /* Check if we should attempt an auto-start */
 543         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
 544                 char *local_args[2];
 545                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
 546
 547                 local_args[0] = cmd;
 548                 local_args[1] = NULL;
 549
 550                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
 551
 552                 do_bootm(cmdtp, 0, 1, local_args);
 553                 return 1;
 554         }
 555         return 0;
 556 }
 557
 558 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 559 {
 560         char *boot_device = NULL;
 561         int idx;
 562         ulong addr, offset = 0;
 563 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 564         struct mtd_device *dev;
 565         struct part_info *part;
 566         u8 pnum;
 567
 568         if (argc >= 2) {
 569                 char *p = (argc == 2) ? argv[1] : argv[2];
 570                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
 571                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
 572                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
 573                                 puts("Not a NAND device\n");
 574                                 return 1;
 575                         }
 576                         if (argc > 3)
 577                                 goto usage;
 578                         if (argc == 3)
 579                                 addr = simple_strtoul(argv[1], NULL, 16);
 580                         else
 581                                 addr = CFG_LOAD_ADDR;
 582                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
 583                                                part->offset, addr, argv[0]);
 584                 }
 585         }
 586 #endif
 587
 588         show_boot_progress(52);
 589         switch (argc) {
 590         case 1:
 591                 addr = CFG_LOAD_ADDR;
 592                 boot_device = getenv("bootdevice");
 593                 break;
 594         case 2:
 595                 addr = simple_strtoul(argv[1], NULL, 16);
 596                 boot_device = getenv("bootdevice");
 597                 break;
 598         case 3:
 599                 addr = simple_strtoul(argv[1], NULL, 16);
 600                 boot_device = argv[2];
 601                 break;
 602         case 4:
 603                 addr = simple_strtoul(argv[1], NULL, 16);
 604                 boot_device = argv[2];
 605                 offset = simple_strtoul(argv[3], NULL, 16);
 606                 break;
 607         default:
 608 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 609 usage:
 610 #endif
 611                 printf("Usage:\n%s\n", cmdtp->usage);
 612                 show_boot_progress(-53);
 613                 return 1;
 614         }
 615
 616         show_boot_progress(53);
 617         if (!boot_device) {
 618                 puts("\n** No boot device **\n");
 619                 show_boot_progress(-54);
 620                 return 1;
 621         }
 622         show_boot_progress(54);
 623
 624         idx = simple_strtoul(boot_device, NULL, 16);
 625
 626         if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
 627                 printf("\n** Device %d not available\n", idx);
 628                 show_boot_progress(-55);
 629                 return 1;
 630         }
 631         show_boot_progress(55);
 632
 633         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 634 }
 635
 636 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 637         "nboot   - boot from NAND device\n",
 638         "[.jffs2] [partition] | [[[loadAddr] dev] offset]\n");
 639
 640 #endif
 641
 642 #else /* CFG_NAND_LEGACY */
 643 /*
 644  *
 645  * Legacy NAND support - to be phased out
 646  *
 647  */
 648 #include <command.h>
 649 #include <malloc.h>
 650 #include <asm/io.h>
 651 #include <watchdog.h>
 652
 653 #ifdef CONFIG_show_boot_progress
 654 # include <status_led.h>
 655 # define show_boot_progress(arg)        show_boot_progress(arg)
 656 #else
 657 # define show_boot_progress(arg)
 658 #endif
 659
 660 #if defined(CONFIG_CMD_NAND)
 661 #include <linux/mtd/nand_legacy.h>
 662 #if 0
 663 #include <linux/mtd/nand_ids.h>
 664 #include <jffs2/jffs2.h>
 665 #endif
 666
 667 #ifdef CONFIG_OMAP1510
 668 void archflashwp(void *archdata, int wp);
 669 #endif
 670
 671 #define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
 672
 673 #undef  NAND_DEBUG
 674 #undef  PSYCHO_DEBUG
 675
 676 /* ****************** WARNING *********************
 677  * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
 678  * erase (or at least attempt to erase) blocks that are marked
 679  * bad. This can be very handy if you are _sure_ that the block
 680  * is OK, say because you marked a good block bad to test bad
 681  * block handling and you are done testing, or if you have
 682  * accidentally marked blocks bad.
 683  *
 684  * Erasing factory marked bad blocks is a _bad_ idea. If the
 685  * erase succeeds there is no reliable way to find them again,
 686  * and attempting to program or erase bad blocks can affect
 687  * the data in _other_ (good) blocks.
 688  */
 689 #define  ALLOW_ERASE_BAD_DEBUG 0
 690
 691 #define CONFIG_MTD_NAND_ECC  /* enable ECC */
 692 #define CONFIG_MTD_NAND_ECC_JFFS2
 693
 694 /* bits for nand_legacy_rw() `cmd'; or together as needed */
 695 #define NANDRW_READ     0x01
 696 #define NANDRW_WRITE    0x00
 697 #define NANDRW_JFFS2    0x02
 698 #define NANDRW_JFFS2_SKIP       0x04
 699
 700 /*
 701  * Imports from nand_legacy.c
 702  */
 703 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
 704 extern int curr_device;
 705 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
 706                             size_t len, int clean);
 707 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
 708                          size_t len, size_t *retlen, u_char *buf);
 709 extern void nand_print(struct nand_chip *nand);
 710 extern void nand_print_bad(struct nand_chip *nand);
 711 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
 712                                size_t len, size_t *retlen, u_char *buf);
 713 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
 714                                 size_t len, size_t *retlen, const u_char *buf);
 715
 716
 717 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 718 {
 719         int rcode = 0;
 720
 721         switch (argc) {
 722         case 0:
 723         case 1:
 724                 printf ("Usage:\n%s\n", cmdtp->usage);
 725                 return 1;
 726         case 2:
 727                 if (strcmp (argv[1], "info") == 0) {
 728                         int i;
 729
 730                         putc ('\n');
 731
 732                         for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
 733                                 if (nand_dev_desc[i].ChipID ==
 734                                     NAND_ChipID_UNKNOWN)
 735                                         continue;       /* list only known devices */
 736                                 printf ("Device %d: ", i);
 737                                 nand_print (&nand_dev_desc[i]);
 738                         }
 739                         return 0;
 740
 741                 } else if (strcmp (argv[1], "device") == 0) {
 742                         if ((curr_device < 0)
 743                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 744                                 puts ("\nno devices available\n");
 745                                 return 1;
 746                         }
 747                         printf ("\nDevice %d: ", curr_device);
 748                         nand_print (&nand_dev_desc[curr_device]);
 749                         return 0;
 750
 751                 } else if (strcmp (argv[1], "bad") == 0) {
 752                         if ((curr_device < 0)
 753                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
 754                                 puts ("\nno devices available\n");
 755                                 return 1;
 756                         }
 757                         printf ("\nDevice %d bad blocks:\n", curr_device);
 758                         nand_print_bad (&nand_dev_desc[curr_device]);
 759                         return 0;
 760
 761                 }
 762                 printf ("Usage:\n%s\n", cmdtp->usage);
 763                 return 1;
 764         case 3:
 765                 if (strcmp (argv[1], "device") == 0) {
 766                         int dev = (int) simple_strtoul (argv[2], NULL, 10);
 767
 768                         printf ("\nDevice %d: ", dev);
 769                         if (dev >= CFG_MAX_NAND_DEVICE) {
 770                                 puts ("unknown device\n");
 771                                 return 1;
 772                         }
 773                         nand_print (&nand_dev_desc[dev]);
 774                         /*nand_print (dev); */
 775
 776                         if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
 777                                 return 1;
 778                         }
 779
 780                         curr_device = dev;
 781
 782                         puts ("... is now current device\n");
 783
 784                         return 0;
 785                 } else if (strcmp (argv[1], "erase") == 0
 786                            && strcmp (argv[2], "clean") == 0) {
 787                         struct nand_chip *nand = &nand_dev_desc[curr_device];
 788                         ulong off = 0;
 789                         ulong size = nand->totlen;
 790                         int ret;
 791
 792                         printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
 793
 794                         ret = nand_legacy_erase (nand, off, size, 1);
 795
 796                         printf ("%s\n", ret ? "ERROR" : "OK");
 797
 798                         return ret;
 799                 }
 800
 801                 printf ("Usage:\n%s\n", cmdtp->usage);
 802                 return 1;
 803         default:
 804                 /* at least 4 args */
 805
 806                 if (strncmp (argv[1], "read", 4) == 0 ||
 807                     strncmp (argv[1], "write", 5) == 0) {
 808                         ulong addr = simple_strtoul (argv[2], NULL, 16);
 809                         ulong off = simple_strtoul (argv[3], NULL, 16);
 810                         ulong size = simple_strtoul (argv[4], NULL, 16);
 811                         int cmd = (strncmp (argv[1], "read", 4) == 0) ?
 812                                 NANDRW_READ : NANDRW_WRITE;
 813                         int ret, total;
 814                         char *cmdtail = strchr (argv[1], '.');
 815
 816                         if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
 817                                 /* read out-of-band data */
 818                                 if (cmd & NANDRW_READ) {
 819                                         ret = nand_read_oob (nand_dev_desc + curr_device,
 820                                                              off, size, (size_t *) & total,
 821                                                              (u_char *) addr);
 822                                 } else {
 823                                         ret = nand_write_oob (nand_dev_desc + curr_device,
 824                                                               off, size, (size_t *) & total,
 825                                                               (u_char *) addr);
 826                                 }
 827                                 return ret;
 828                         } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
 829                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 830                         else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
 831                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 832                                 if (cmd & NANDRW_READ)
 833                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 834                         }
 835 #ifdef SXNI855T
 836                         /* need ".e" same as ".j" for compatibility with older units */
 837                         else if (cmdtail && !strcmp (cmdtail, ".e"))
 838                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
 839 #endif
 840 #ifdef CFG_NAND_SKIP_BAD_DOT_I
 841                         /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
 842                         /* ".i" for image -> read skips bad block (no 0xff) */
 843                         else if (cmdtail && !strcmp (cmdtail, ".i")) {
 844                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
 845                                 if (cmd & NANDRW_READ)
 846                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
 847                         }
 848 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
 849                         else if (cmdtail) {
 850                                 printf ("Usage:\n%s\n", cmdtp->usage);
 851                                 return 1;
 852                         }
 853
 854                         printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
 855                                 (cmd & NANDRW_READ) ? "read" : "write",
 856                                 curr_device, off, size);
 857
 858                         ret = nand_legacy_rw (nand_dev_desc + curr_device,
 859                                               cmd, off, size,
 860                                               (size_t *) & total,
 861                                               (u_char *) addr);
 862
 863                         printf (" %d bytes %s: %s\n", total,
 864                                 (cmd & NANDRW_READ) ? "read" : "written",
 865                                 ret ? "ERROR" : "OK");
 866
 867                         return ret;
 868                 } else if (strcmp (argv[1], "erase") == 0 &&
 869                            (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
 870                         int clean = argc == 5;
 871                         ulong off =
 872                                 simple_strtoul (argv[2 + clean], NULL, 16);
 873                         ulong size =
 874                                 simple_strtoul (argv[3 + clean], NULL, 16);
 875                         int ret;
 876
 877                         printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
 878                                 curr_device, off, size);
 879
 880                         ret = nand_legacy_erase (nand_dev_desc + curr_device,
 881                                                  off, size, clean);
 882
 883                         printf ("%s\n", ret ? "ERROR" : "OK");
 884
 885                         return ret;
 886                 } else {
 887                         printf ("Usage:\n%s\n", cmdtp->usage);
 888                         rcode = 1;
 889                 }
 890
 891                 return rcode;
 892         }
 893 }
 894
 895 U_BOOT_CMD(
 896         nand,   5,      1,      do_nand,
 897         "nand    - legacy NAND sub-system\n",
 898         "info  - show available NAND devices\n"
 899         "nand device [dev] - show or set current device\n"
 900         "nand read[.jffs2[s]]  addr off size\n"
 901         "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
 902         "    at offset `off' to/from memory address `addr'\n"
 903         "nand erase [clean] [off size] - erase `size' bytes from\n"
 904         "    offset `off' (entire device if not specified)\n"
 905         "nand bad - show bad blocks\n"
 906         "nand read.oob addr off size - read out-of-band data\n"
 907         "nand write.oob addr off size - read out-of-band data\n"
 908 );
 909
 910 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 911 {
 912         char *boot_device = NULL;
 913         char *ep;
 914         int dev;
 915         ulong cnt;
 916         ulong addr;
 917         ulong offset = 0;
 918         image_header_t *hdr;
 919         int rcode = 0;
 920         show_boot_progress (52);
 921         switch (argc) {
 922         case 1:
 923                 addr = CFG_LOAD_ADDR;
 924                 boot_device = getenv ("bootdevice");
 925                 break;
 926         case 2:
 927                 addr = simple_strtoul(argv[1], NULL, 16);
 928                 boot_device = getenv ("bootdevice");
 929                 break;
 930         case 3:
 931                 addr = simple_strtoul(argv[1], NULL, 16);
 932                 boot_device = argv[2];
 933                 break;
 934         case 4:
 935                 addr = simple_strtoul(argv[1], NULL, 16);
 936                 boot_device = argv[2];
 937                 offset = simple_strtoul(argv[3], NULL, 16);
 938                 break;
 939         default:
 940                 printf ("Usage:\n%s\n", cmdtp->usage);
 941                 show_boot_progress (-53);
 942                 return 1;
 943         }
 944
 945         show_boot_progress (53);
 946         if (!boot_device) {
 947                 puts ("\n** No boot device **\n");
 948                 show_boot_progress (-54);
 949                 return 1;
 950         }
 951         show_boot_progress (54);
 952
 953         dev = simple_strtoul(boot_device, &ep, 16);
 954
 955         if ((dev >= CFG_MAX_NAND_DEVICE) ||
 956             (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
 957                 printf ("\n** Device %d not available\n", dev);
 958                 show_boot_progress (-55);
 959                 return 1;
 960         }
 961         show_boot_progress (55);
 962
 963         printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
 964                 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
 965                 offset);
 966
 967         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 968                         SECTORSIZE, NULL, (u_char *)addr)) {
 969                 printf ("** Read error on %d\n", dev);
 970                 show_boot_progress (-56);
 971                 return 1;
 972         }
 973         show_boot_progress (56);
 974
 975         hdr = (image_header_t *)addr;
 976
 977         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
 978
 979                 print_image_hdr (hdr);
 980
 981                 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
 982                 cnt -= SECTORSIZE;
 983         } else {
 984                 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
 985                 show_boot_progress (-57);
 986                 return 1;
 987         }
 988         show_boot_progress (57);
 989
 990         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
 991                         offset + SECTORSIZE, cnt, NULL,
 992                         (u_char *)(addr+SECTORSIZE))) {
 993                 printf ("** Read error on %d\n", dev);
 994                 show_boot_progress (-58);
 995                 return 1;
 996         }
 997         show_boot_progress (58);
 998
 999         /* Loading ok, update default load address */
1000
1001         load_addr = addr;
1002
1003         /* Check if we should attempt an auto-start */
1004         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
1005                 char *local_args[2];
1006                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
1007
1008                 local_args[0] = argv[0];
1009                 local_args[1] = NULL;
1010
1011                 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
1012
1013                 do_bootm (cmdtp, 0, 1, local_args);
1014                 rcode = 1;
1015         }
1016         return rcode;
1017 }
1018
1019 U_BOOT_CMD(
1020         nboot,  4,      1,      do_nandboot,
1021         "nboot   - boot from NAND device\n",
1022         "loadAddr dev\n"
1023 );
1024
1025 #endif
1026
1027 #endif /* CFG_NAND_LEGACY */