board/karo/tx28/flash.c

   1 #include <common.h>
   2 #include <malloc.h>
   3 #include <nand.h>
   4 #include <errno.h>
   5
   6 #include <linux/err.h>
   7
   8 #include <asm/io.h>
   9 #include <asm/sizes.h>
  10 #include <asm/arch/regs-base.h>
  11 #include <asm/arch/regs-gpmi.h>
  12 #include <asm/arch/regs-bch.h>
  13
  14 #define FCB_START_BLOCK         0
  15 #define NUM_FCB_BLOCKS          1
  16 #define MAX_FCB_BLOCKS          32768
  17
  18 struct mx28_nand_timing {
  19         u8 data_setup;
  20         u8 data_hold;
  21         u8 address_setup;
  22         u8 dsample_time;
  23         u8 nand_timing_state;
  24         u8 tREA;
  25         u8 tRLOH;
  26         u8 tRHOH;
  27 };
  28
  29 struct mx28_fcb {
  30         u32 checksum;
  31         u32 fingerprint;
  32         u32 version;
  33         struct mx28_nand_timing timing;
  34         u32 page_data_size;
  35         u32 total_page_size;
  36         u32 sectors_per_block;
  37         u32 number_of_nands;    /* not used by ROM code */
  38         u32 total_internal_die; /* not used by ROM code */
  39         u32 cell_type;          /* not used by ROM code */
  40         u32 ecc_blockn_type;
  41         u32 ecc_block0_size;
  42         u32 ecc_blockn_size;
  43         u32 ecc_block0_type;
  44         u32 metadata_size;
  45         u32 ecc_blocks_per_page;
  46         u32 rsrvd[6];            /* not used by ROM code */
  47         u32 bch_mode;
  48         u32 boot_patch;
  49         u32 patch_sectors;
  50         u32 fw1_start_page;
  51         u32 fw2_start_page;
  52         u32 fw1_sectors;
  53         u32 fw2_sectors;
  54         u32 dbbt_search_area;
  55         u32 bb_mark_byte;
  56         u32 bb_mark_startbit;
  57         u32 bb_mark_phys_offset;
  58 };
  59
  60 struct mx28_dbbt_header {
  61         u32 checksum;
  62         u32 fingerprint;
  63         u32 version;
  64         u32 number_bb;
  65         u32 number_pages;
  66         u8 spare[492];
  67 };
  68
  69 struct mx28_dbbt {
  70         u32 nand_number;
  71         u32 number_bb;
  72         u32 bb_num[2040 / 4];
  73 };
  74
  75 #define BF_VAL(v, bf)           (((v) & bf##_MASK) >> bf##_OFFSET)
  76
  77 static nand_info_t *mtd = &nand_info[0];
  78
  79 extern void *_start;
  80
  81 #define BIT(v,n)        (((v) >> (n)) & 0x1)
  82
  83 static u8 calculate_parity_13_8(u8 d)
  84 {
  85         u8 p = 0;
  86
  87         p |= (BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 3) ^ BIT(d, 2))             << 0;
  88         p |= (BIT(d, 7) ^ BIT(d, 5) ^ BIT(d, 4) ^ BIT(d, 2) ^ BIT(d, 1)) << 1;
  89         p |= (BIT(d, 7) ^ BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 1) ^ BIT(d, 0)) << 2;
  90         p |= (BIT(d, 7) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 0))             << 3;
  91         p |= (BIT(d, 6) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 2) ^ BIT(d, 1) ^ BIT(d, 0)) << 4;
  92         return p;
  93 }
  94
  95 static void encode_hamming_13_8(void *_src, void *_ecc, size_t size)
  96 {
  97         int i;
  98         u8 *src = _src;
  99         u8 *ecc = _ecc;
 100
 101         for (i = 0; i < size; i++)
 102                 ecc[i] = calculate_parity_13_8(src[i]);
 103 }
 104
 105 static u32 calc_chksum(void *buf, size_t size)
 106 {
 107         u32 chksum = 0;
 108         u8 *bp = buf;
 109         size_t i;
 110
 111         for (i = 0; i < size; i++) {
 112                 chksum += bp[i];
 113         }
 114         return ~chksum;
 115 }
 116
 117 /*
 118   Physical organisation of data in NAND flash:
 119   metadata
 120   payload chunk 0 (may be empty)
 121   ecc for metadata + payload chunk 0
 122   payload chunk 1
 123   ecc for payload chunk 1
 124 ...
 125   payload chunk n
 126   ecc for payload chunk n
 127  */
 128
 129 static int calc_bb_offset(nand_info_t *mtd, struct mx28_fcb *fcb)
 130 {
 131         int bb_mark_offset;
 132         int chunk_data_size = fcb->ecc_blockn_size * 8;
 133         int chunk_ecc_size = (fcb->ecc_blockn_type << 1) * 13;
 134         int chunk_total_size = chunk_data_size + chunk_ecc_size;
 135         int bb_mark_chunk, bb_mark_chunk_offs;
 136
 137         bb_mark_offset = (mtd->writesize - fcb->metadata_size) * 8;
 138         if (fcb->ecc_block0_size == 0)
 139                 bb_mark_offset -= (fcb->ecc_block0_type << 1) * 13;
 140
 141         bb_mark_chunk = bb_mark_offset / chunk_total_size;
 142         bb_mark_chunk_offs = bb_mark_offset - (bb_mark_chunk * chunk_total_size);
 143         if (bb_mark_chunk_offs > chunk_data_size) {
 144                 printf("Unsupported ECC layout; BB mark resides in ECC data: %u\n",
 145                         bb_mark_chunk_offs);
 146                 return -EINVAL;
 147         }
 148         bb_mark_offset -= bb_mark_chunk * chunk_ecc_size;
 149         return bb_mark_offset;
 150 }
 151
 152 static struct mx28_fcb *create_fcb(void *buf, int fw1_start_block,
 153                                 int fw2_start_block, size_t fw_size)
 154 {
 155         struct mx28_gpmi_regs *gpmi_base =
 156                 (struct mx28_gpmi_regs *)MXS_GPMI_BASE;
 157         struct mx28_bch_regs *bch_base =
 158                 (struct mx28_bch_regs *)MXS_BCH_BASE;
 159         u32 fl0, fl1;
 160         u32 t0, t1;
 161         int metadata_size;
 162         int bb_mark_bit_offs;
 163         struct mx28_fcb *fcb;
 164         int fcb_offs;
 165
 166         if (gpmi_base == NULL || bch_base == NULL) {
 167                 return ERR_PTR(-ENOMEM);
 168         }
 169
 170         fl0 = readl(&bch_base->hw_bch_flash0layout0);
 171         fl1 = readl(&bch_base->hw_bch_flash0layout1);
 172         t0 = readl(&gpmi_base->hw_gpmi_timing0);
 173         t1 = readl(&gpmi_base->hw_gpmi_timing1);
 174
 175         metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 176
 177         fcb = buf + ALIGN(metadata_size, 4);
 178         fcb_offs = (void *)fcb - buf;
 179
 180         memset(buf, 0xff, fcb_offs);
 181         memset(fcb, 0x00, sizeof(*fcb));
 182         memset(fcb + 1, 0xff, mtd->erasesize - fcb_offs - sizeof(*fcb));
 183
 184         strncpy((char *)&fcb->fingerprint, "FCB ", 4);
 185         fcb->version = cpu_to_be32(1);
 186
 187         fcb->timing.data_setup = BF_VAL(t0, GPMI_TIMING0_DATA_SETUP);
 188         fcb->timing.data_hold = BF_VAL(t0, GPMI_TIMING0_DATA_HOLD);
 189         fcb->timing.address_setup = BF_VAL(t0, GPMI_TIMING0_ADDRESS_SETUP);
 190
 191         fcb->page_data_size = mtd->writesize;
 192         fcb->total_page_size = mtd->writesize + mtd->oobsize;
 193         fcb->sectors_per_block = mtd->erasesize / mtd->writesize;
 194
 195         fcb->ecc_block0_type = BF_VAL(fl0, BCH_FLASHLAYOUT0_ECC0);
 196         fcb->ecc_block0_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_DATA0_SIZE);
 197         fcb->ecc_blockn_type = BF_VAL(fl1, BCH_FLASHLAYOUT1_ECCN);
 198         fcb->ecc_blockn_size = BF_VAL(fl1, BCH_FLASHLAYOUT1_DATAN_SIZE);
 199
 200         fcb->metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 201         fcb->ecc_blocks_per_page = BF_VAL(fl0, BCH_FLASHLAYOUT0_NBLOCKS);
 202         fcb->bch_mode = readl(&bch_base->hw_bch_mode);
 203 /*
 204         fcb->boot_patch = 0;
 205         fcb->patch_sectors = 0;
 206 */
 207         fcb->fw1_start_page = fw1_start_block * mtd->erasesize / mtd->writesize;
 208         fcb->fw1_sectors = DIV_ROUND_UP(fw_size, mtd->writesize);
 209
 210         if (fw2_start_block != 0 && fw2_start_block < mtd->size / mtd->erasesize) {
 211                 fcb->fw2_start_page = fw2_start_block * mtd->erasesize / mtd->writesize;
 212                 fcb->fw2_sectors = fcb->fw1_sectors;
 213         }
 214
 215         fcb->dbbt_search_area = 1;
 216
 217         bb_mark_bit_offs = calc_bb_offset(mtd, fcb);
 218         if (bb_mark_bit_offs < 0)
 219                 return ERR_PTR(bb_mark_bit_offs);
 220         fcb->bb_mark_byte = bb_mark_bit_offs / 8;
 221         fcb->bb_mark_startbit = bb_mark_bit_offs % 8;
 222         fcb->bb_mark_phys_offset = mtd->writesize;
 223
 224         fcb->checksum = calc_chksum(&fcb->fingerprint, 512 - 4);
 225         return fcb;
 226 }
 227
 228 static int find_fcb(void *ref, int page)
 229 {
 230         int ret = 0;
 231         struct nand_chip *chip = mtd->priv;
 232         void *buf = malloc(mtd->erasesize);
 233
 234         if (buf == NULL) {
 235                 return -ENOMEM;
 236         }
 237         chip->select_chip(mtd, 0);
 238         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
 239         ret = chip->ecc.read_page_raw(mtd, chip, buf, page);
 240         if (ret) {
 241                 printf("Failed to read FCB from page %u: %d\n", page, ret);
 242                 return ret;
 243         }
 244         chip->select_chip(mtd, -1);
 245         if (memcmp(buf, ref, mtd->writesize) == 0) {
 246                 printf("%s: Found FCB in page %u (%08x)\n", __func__,
 247                         page, page * mtd->writesize);
 248                 ret = 1;
 249         }
 250         free(buf);
 251         return ret;
 252 }
 253
 254 static int write_fcb(void *buf, int block)
 255 {
 256         int ret;
 257         struct nand_chip *chip = mtd->priv;
 258         int page = block * mtd->erasesize / mtd->writesize;
 259
 260         ret = find_fcb(buf, page);
 261         if (ret > 0) {
 262                 printf("FCB at block %d is up to date\n", block);
 263                 return 0;
 264         }
 265
 266         ret = nand_erase(mtd, block * mtd->erasesize, mtd->erasesize);
 267         if (ret) {
 268                 printf("Failed to erase FCB block %u\n", block);
 269                 return ret;
 270         }
 271
 272         printf("Writing FCB to block %d @ %08x\n", block,
 273                 block * mtd->erasesize);
 274         chip->select_chip(mtd, 0);
 275         ret = chip->write_page(mtd, chip, buf, page, 0, 1);
 276         if (ret) {
 277                 printf("Failed to write FCB to block %u: %d\n", block, ret);
 278         }
 279         chip->select_chip(mtd, -1);
 280         return ret;
 281 }
 282
 283 #define chk_overlap(a,b)                                \
 284         ((a##_start_block <= b##_end_block &&           \
 285                 a##_end_block >= b##_start_block) ||    \
 286         (b##_start_block <= a##_end_block &&            \
 287                 b##_end_block >= a##_start_block))
 288
 289 #define fail_if_overlap(a,b,m1,m2) do {                         \
 290         if (chk_overlap(a, b)) {                                \
 291                 printf("%s blocks %lu..%lu overlap %s in blocks %lu..%lu!\n", \
 292                         m1, a##_start_block, a##_end_block,     \
 293                         m2, b##_start_block, b##_end_block);    \
 294                 return -EINVAL;                                 \
 295         }                                                       \
 296 } while (0)
 297
 298 #ifndef CONFIG_ENV_OFFSET_REDUND
 299 #define TOTAL_ENV_SIZE CONFIG_ENV_SIZE
 300 #else
 301 #define TOTAL_ENV_SIZE (CONFIG_ENV_SIZE * 2)
 302 #endif
 303
 304 int do_update(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 305 {
 306         int ret;
 307         int block;
 308         int erase_size = mtd->erasesize;
 309         int page_size = mtd->writesize;
 310         void *buf;
 311         char *load_addr;
 312         char *file_size;
 313         size_t size = 0;
 314         void *addr = NULL;
 315         struct mx28_fcb *fcb;
 316         unsigned long fcb_start_block = FCB_START_BLOCK;
 317         unsigned long num_fcb_blocks = NUM_FCB_BLOCKS;
 318         unsigned long fcb_end_block;
 319         unsigned long mtd_num_blocks = mtd->size / mtd->erasesize;
 320         unsigned long env_start_block = CONFIG_ENV_OFFSET / mtd->erasesize;
 321         unsigned long env_end_block = env_start_block +
 322                 DIV_ROUND_UP(TOTAL_ENV_SIZE, mtd->erasesize) - 1;
 323         int optind;
 324         int fw1_set = 0;
 325         int fw2_set = 0;
 326         unsigned long fw1_start_block = 0, fw1_end_block;
 327         unsigned long fw2_start_block = 0, fw2_end_block;
 328         unsigned long fw_num_blocks;
 329         unsigned long extra_blocks = 2;
 330         nand_erase_options_t erase_opts = { 0, };
 331         int fcb_written = 0;
 332
 333         load_addr = getenv("fileaddr");
 334         file_size = getenv("filesize");
 335
 336         if (argc < 2 && load_addr == NULL) {
 337                 printf("Load address not specified\n");
 338                 return -EINVAL;
 339         }
 340         if (argc < 3 && file_size == NULL) {
 341                 printf("Image size not specified\n");
 342                 return -EINVAL;
 343         }
 344
 345         for (optind = 1; optind < argc; optind++) {
 346                 if (strcmp(argv[optind], "-b") == 0) {
 347                         if (optind >= argc - 1) {
 348                                 printf("Option %s requires an argument\n", argv[optind]);
 349                                 return -EINVAL;
 350                         }
 351                         optind++;
 352                         fcb_start_block = simple_strtoul(argv[optind], NULL, 0);
 353                         if (fcb_start_block >= mtd_num_blocks) {
 354                                 printf("Block number %lu is out of range: 0..%lu\n",
 355                                         fcb_start_block, mtd_num_blocks - 1);
 356                                 return -EINVAL;
 357                         }
 358                 } else if (strcmp(argv[optind], "-n") == 0) {
 359                         if (optind >= argc - 1) {
 360                                 printf("Option %s requires an argument\n", argv[optind]);
 361                                 return -EINVAL;
 362                         }
 363                         optind++;
 364                         num_fcb_blocks = simple_strtoul(argv[optind], NULL, 0);
 365                         if (num_fcb_blocks > MAX_FCB_BLOCKS) {
 366                                 printf("Extraneous number of FCB blocks; max. allowed: %u\n",
 367                                         MAX_FCB_BLOCKS);
 368                                 return -EINVAL;
 369                         }
 370                 } else if (strcmp(argv[optind], "-f") == 0) {
 371                         if (optind >= argc - 1) {
 372                                 printf("Option %s requires an argument\n", argv[optind]);
 373                                 return -EINVAL;
 374                         }
 375                         optind++;
 376                         fw1_start_block = simple_strtoul(argv[optind], NULL, 0);
 377                         if (fw1_start_block >= mtd_num_blocks) {
 378                                 printf("Block number %lu is out of range: 0..%lu\n",
 379                                         fw1_start_block,
 380                                         mtd_num_blocks - 1);
 381                                 return -EINVAL;
 382                         }
 383                         fw1_set = 1;
 384                 } else if (strcmp(argv[optind], "-r") == 0) {
 385                         if (optind < argc - 1 && argv[optind + 1][0] != '-') {
 386                                 optind++;
 387                                 fw2_start_block = simple_strtoul(argv[optind], NULL, 0);
 388                                 if (fw2_start_block >= mtd_num_blocks) {
 389                                         printf("Block number %lu is out of range: 0..%lu\n",
 390                                                 fw2_start_block,
 391                                                 mtd_num_blocks - 1);
 392                                         return -EINVAL;
 393                                 }
 394                         }
 395                         fw2_set = 1;
 396                 } else if (strcmp(argv[optind], "-e") == 0) {
 397                         if (optind >= argc - 1) {
 398                                 printf("Option %s requires an argument\n", argv[optind]);
 399                                 return -EINVAL;
 400                         }
 401                         optind++;
 402                         extra_blocks = simple_strtoul(argv[optind], NULL, 0);
 403                         if (extra_blocks >= mtd_num_blocks) {
 404                                 printf("Extra block count %lu is out of range: 0..%lu\n",
 405                                         extra_blocks,
 406                                         mtd_num_blocks - 1);
 407                                 return -EINVAL;
 408                         }
 409                 } else if (argv[optind][0] == '-') {
 410                         printf("Unrecognized option %s\n", argv[optind]);
 411                         return -EINVAL;
 412                 }
 413         }
 414         if (argc > optind) {
 415                 load_addr = NULL;
 416                 addr = (void *)simple_strtoul(argv[optind], NULL, 0);
 417                 optind++;
 418         }
 419         if (argc > optind) {
 420                 file_size = NULL;
 421                 size = simple_strtoul(argv[optind], NULL, 0);
 422                 optind++;
 423         }
 424         if (load_addr != NULL) {
 425                 addr = (void *)simple_strtoul(load_addr, NULL, 16);
 426                 printf("Using default load address %p\n", addr);
 427         }
 428         if (file_size != NULL) {
 429                 size = simple_strtoul(file_size, NULL, 16);
 430                 printf("Using default file size %08x\n", size);
 431         }
 432         fcb_end_block = fcb_start_block + num_fcb_blocks - 1;
 433         fw_num_blocks = DIV_ROUND_UP(size, mtd->erasesize);
 434
 435         if (!fw1_set) {
 436                 fw1_start_block = fcb_end_block + 1;
 437                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 438                 if (chk_overlap(fw1, env)) {
 439                         fw1_start_block = env_end_block + 1;
 440                         fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 441                 }
 442         } else {
 443                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 444         }
 445
 446         if (fw2_set && fw2_start_block == 0) {
 447                 fw2_start_block = fw1_end_block + 1;
 448                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 449                 if (chk_overlap(fw2, env)) {
 450                         fw2_start_block = env_end_block + 1;
 451                         fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 452                 }
 453         } else {
 454                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 455         }
 456
 457         fail_if_overlap(fcb, env, "FCB", "Environment");
 458         fail_if_overlap(fcb, fw1, "FCB", "FW1");
 459         fail_if_overlap(fw1, env, "FW1", "Environment");
 460         if (fw2_set) {
 461                 fail_if_overlap(fcb, fw2, "FCB", "FW2");
 462                 fail_if_overlap(fw2, env, "FW2", "Environment");
 463                 fail_if_overlap(fw1, fw2, "FW1", "FW2");
 464         }
 465
 466         buf = malloc(erase_size);
 467         if (buf == NULL) {
 468                 printf("Failed to allocate buffer\n");
 469                 return -ENOMEM;
 470         }
 471         /* search for first non-bad block in FW1 block range */
 472         while (fw1_start_block <= fw1_end_block) {
 473                 if (!nand_block_isbad(mtd, fw1_start_block * mtd->erasesize))
 474                         break;
 475                 fw1_start_block++;
 476         }
 477         if (fw1_end_block - fw1_start_block + 1 < fw_num_blocks) {
 478                 printf("Too many bad blocks in FW1 block range: %lu..%lu\n",
 479                         fw1_end_block + 1 - fw_num_blocks - extra_blocks,
 480                         fw1_end_block);
 481                 return -EINVAL;
 482         }
 483
 484         /* search for first non-bad block in FW2 block range */
 485         while (fw2_set && fw2_start_block <= fw2_end_block) {
 486                 if (!nand_block_isbad(mtd, fw2_start_block * mtd->erasesize))
 487                         break;
 488                 fw2_start_block++;
 489         }
 490         if (fw2_end_block - fw2_start_block + 1 < fw_num_blocks) {
 491                 printf("Too many bad blocks in FW2 area %08lx..%08lx\n",
 492                         fw2_end_block + 1 - fw_num_blocks - extra_blocks,
 493                         fw2_end_block);
 494                 return -EINVAL;
 495         }
 496
 497         fcb = create_fcb(buf, fw1_start_block, fw2_start_block,
 498                         (fw_num_blocks + extra_blocks) * mtd->erasesize);
 499         if (IS_ERR(fcb)) {
 500                 printf("Failed to initialize FCB: %ld\n", PTR_ERR(fcb));
 501                 return PTR_ERR(fcb);
 502         }
 503         encode_hamming_13_8(fcb, (void *)fcb + 512, 512);
 504
 505         for (block = fcb_start_block; block < fcb_start_block + num_fcb_blocks;
 506              block++) {
 507                 if (nand_block_isbad(mtd, block * mtd->erasesize)) {
 508                         if (block == fcb_start_block)
 509                                 fcb_start_block++;
 510                         continue;
 511                 }
 512                 ret = write_fcb(buf, block);
 513                 if (ret) {
 514                         printf("Failed to write FCB to block %u\n", block);
 515                         return ret;
 516                 }
 517                 fcb_written = 1;
 518         }
 519
 520         if (!fcb_written) {
 521                 printf("Could not write FCB to flash\n");
 522                 return -EIO;
 523         }
 524
 525         printf("Programming U-Boot image from %p to block %lu\n",
 526                 addr, fw1_start_block);
 527         if (size & (page_size - 1)) {
 528                 memset(addr + size, 0xff, size & (page_size - 1));
 529                 size = ALIGN(size, page_size);
 530         }
 531
 532         erase_opts.offset = fcb->fw1_start_page * page_size;
 533         erase_opts.length = ALIGN(size, erase_size) +
 534                 extra_blocks * mtd->erasesize;
 535         erase_opts.quiet = 1;
 536
 537         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 538                 erase_opts.offset + erase_opts.length - 1);
 539
 540         ret = nand_erase_opts(mtd, &erase_opts);
 541         if (ret) {
 542                 printf("Failed to erase flash: %d\n", ret);
 543                 return ret;
 544         }
 545         printf("Programming flash @ %08x..%08x from %p\n",
 546                 fcb->fw1_start_page * page_size,
 547                 fcb->fw1_start_page * page_size + size, addr);
 548         ret = nand_write_skip_bad(mtd, fcb->fw1_start_page * page_size,
 549                                 &size, addr, WITH_DROP_FFS);
 550         if (ret) {
 551                 printf("Failed to program flash: %d\n", ret);
 552                 return ret;
 553         }
 554         if (fw2_start_block == 0) {
 555                 return ret;
 556         }
 557
 558         printf("Programming redundant U-Boot image to block %lu\n",
 559                 fw2_start_block);
 560         erase_opts.offset = fcb->fw2_start_page * page_size;
 561         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 562                 erase_opts.offset + erase_opts.length - 1);
 563
 564         ret = nand_erase_opts(mtd, &erase_opts);
 565         if (ret) {
 566                 printf("Failed to erase flash: %d\n", ret);
 567                 return ret;
 568         }
 569         printf("Programming flash @ %08x..%08x from %p\n",
 570                 fcb->fw2_start_page * page_size,
 571                 fcb->fw2_start_page * page_size + size, addr);
 572         ret = nand_write_skip_bad(mtd, fcb->fw2_start_page * page_size,
 573                                 &size, addr, WITH_DROP_FFS);
 574         if (ret) {
 575                 printf("Failed to program flash: %d\n", ret);
 576                 return ret;
 577         }
 578         return ret;
 579 }
 580
 581 U_BOOT_CMD(romupdate, 11, 0, do_update,
 582         "Creates an FCB data structure and writes an U-Boot image to flash\n",
 583         "[-b #] [-n #] [-f #] [-r [#]] [<address>] [<length>]\n"
 584         "\t-b #\tfirst FCB block number (default 0)\n"
 585         "\t-n #\ttotal number of FCB blocks (default 1)\n"
 586         "\t-f #\twrite bootloader image at block #\n"
 587         "\t-r\twrite redundant bootloader image at next free block after first image\n"
 588         "\t-r #\twrite redundant bootloader image at block #\n"
 589         "\t-e #\tspecify number of redundant blocks per boot loader image\n"
 590         "\t<address>\tRAM address of bootloader image (default: ${fileaddr}\n"
 591         "\t<length>\tlength of bootloader image in RAM (default: ${filesize}"
 592         );