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/imx-common/regs-gpmi.h>
  12 #include <asm/imx-common/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 gpmi_regs *gpmi_base = (void *)GPMI_BASE_ADDRESS;
 156         struct bch_regs *bch_base = (void *)BCH_BASE_ADDRESS;
 157         u32 fl0, fl1;
 158         u32 t0;
 159         int metadata_size;
 160         int bb_mark_bit_offs;
 161         struct mx28_fcb *fcb;
 162         int fcb_offs;
 163
 164         if (gpmi_base == NULL || bch_base == NULL) {
 165                 return ERR_PTR(-ENOMEM);
 166         }
 167
 168         fl0 = readl(&bch_base->hw_bch_flash0layout0);
 169         fl1 = readl(&bch_base->hw_bch_flash0layout1);
 170         t0 = readl(&gpmi_base->hw_gpmi_timing0);
 171
 172         metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 173
 174         fcb = buf + ALIGN(metadata_size, 4);
 175         fcb_offs = (void *)fcb - buf;
 176
 177         memset(buf, 0xff, fcb_offs);
 178         memset(fcb, 0x00, sizeof(*fcb));
 179         memset(fcb + 1, 0xff, mtd->erasesize - fcb_offs - sizeof(*fcb));
 180
 181         strncpy((char *)&fcb->fingerprint, "FCB ", 4);
 182         fcb->version = cpu_to_be32(1);
 183
 184         /* ROM code assumes GPMI clock of 25 MHz */
 185         fcb->timing.data_setup = BF_VAL(t0, GPMI_TIMING0_DATA_SETUP) * 40;
 186         fcb->timing.data_hold = BF_VAL(t0, GPMI_TIMING0_DATA_HOLD) * 40;
 187         fcb->timing.address_setup = BF_VAL(t0, GPMI_TIMING0_ADDRESS_SETUP) * 40;
 188
 189         fcb->page_data_size = mtd->writesize;
 190         fcb->total_page_size = mtd->writesize + mtd->oobsize;
 191         fcb->sectors_per_block = mtd->erasesize / mtd->writesize;
 192
 193         fcb->ecc_block0_type = BF_VAL(fl0, BCH_FLASHLAYOUT0_ECC0);
 194         fcb->ecc_block0_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_DATA0_SIZE);
 195         fcb->ecc_blockn_type = BF_VAL(fl1, BCH_FLASHLAYOUT1_ECCN);
 196         fcb->ecc_blockn_size = BF_VAL(fl1, BCH_FLASHLAYOUT1_DATAN_SIZE);
 197
 198         fcb->metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 199         fcb->ecc_blocks_per_page = BF_VAL(fl0, BCH_FLASHLAYOUT0_NBLOCKS);
 200         fcb->bch_mode = readl(&bch_base->hw_bch_mode);
 201 /*
 202         fcb->boot_patch = 0;
 203         fcb->patch_sectors = 0;
 204 */
 205         fcb->fw1_start_page = fw1_start_block * mtd->erasesize / mtd->writesize;
 206         fcb->fw1_sectors = DIV_ROUND_UP(fw_size, mtd->writesize);
 207
 208         if (fw2_start_block != 0 && fw2_start_block < mtd->size / mtd->erasesize) {
 209                 fcb->fw2_start_page = fw2_start_block * mtd->erasesize / mtd->writesize;
 210                 fcb->fw2_sectors = fcb->fw1_sectors;
 211         }
 212
 213         fcb->dbbt_search_area = 1;
 214
 215         bb_mark_bit_offs = calc_bb_offset(mtd, fcb);
 216         if (bb_mark_bit_offs < 0)
 217                 return ERR_PTR(bb_mark_bit_offs);
 218         fcb->bb_mark_byte = bb_mark_bit_offs / 8;
 219         fcb->bb_mark_startbit = bb_mark_bit_offs % 8;
 220         fcb->bb_mark_phys_offset = mtd->writesize;
 221
 222         fcb->checksum = calc_chksum(&fcb->fingerprint, 512 - 4);
 223         return fcb;
 224 }
 225
 226 static int find_fcb(void *ref, int page)
 227 {
 228         int ret = 0;
 229         struct nand_chip *chip = mtd->priv;
 230         void *buf = malloc(mtd->erasesize);
 231
 232         if (buf == NULL) {
 233                 return -ENOMEM;
 234         }
 235         chip->select_chip(mtd, 0);
 236         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
 237         ret = chip->ecc.read_page_raw(mtd, chip, buf, 1, page);
 238         if (ret) {
 239                 printf("Failed to read FCB from page %u: %d\n", page, ret);
 240                 return ret;
 241         }
 242         chip->select_chip(mtd, -1);
 243         if (memcmp(buf, ref, mtd->writesize) == 0) {
 244                 debug("Found FCB in page %u (%08x)\n",
 245                         page, page * mtd->writesize);
 246                 ret = 1;
 247         }
 248         free(buf);
 249         return ret;
 250 }
 251
 252 static int write_fcb(void *buf, int block)
 253 {
 254         int ret;
 255         struct nand_chip *chip = mtd->priv;
 256         int page = block * mtd->erasesize / mtd->writesize;
 257
 258         ret = find_fcb(buf, page);
 259         if (ret > 0) {
 260                 printf("FCB at block %d is up to date\n", block);
 261                 return 0;
 262         }
 263
 264         ret = nand_erase(mtd, block * mtd->erasesize, mtd->erasesize);
 265         if (ret) {
 266                 printf("Failed to erase FCB block %u\n", block);
 267                 return ret;
 268         }
 269
 270         printf("Writing FCB to block %d @ %08x\n", block,
 271                 block * mtd->erasesize);
 272         chip->select_chip(mtd, 0);
 273         ret = chip->write_page(mtd, chip, buf, 1, page, 0, 1);
 274         if (ret) {
 275                 printf("Failed to write FCB to block %u: %d\n", block, ret);
 276         }
 277         chip->select_chip(mtd, -1);
 278         return ret;
 279 }
 280
 281 static size_t count_good_blocks(int start, int end)
 282 {
 283         size_t max_len = (end - start + 1);
 284         int block;
 285
 286         for (block = start; block <= end; block++) {
 287                 if (nand_block_isbad(mtd, block * mtd->erasesize))
 288                         max_len--;
 289         }
 290         return max_len;
 291 }
 292
 293 #define chk_overlap(a,b)                                \
 294         ((a##_start_block <= b##_end_block &&           \
 295                 a##_end_block >= b##_start_block) ||    \
 296         (b##_start_block <= a##_end_block &&            \
 297                 b##_end_block >= a##_start_block))
 298
 299 #define fail_if_overlap(a,b,m1,m2) do {                         \
 300         if (chk_overlap(a, b)) {                                \
 301                 printf("%s blocks %lu..%lu overlap %s in blocks %lu..%lu!\n", \
 302                         m1, a##_start_block, a##_end_block,     \
 303                         m2, b##_start_block, b##_end_block);    \
 304                 return -EINVAL;                                 \
 305         }                                                       \
 306 } while (0)
 307
 308 #ifdef CONFIG_ENV_IS_IN_NAND
 309 #ifndef CONFIG_ENV_OFFSET_REDUND
 310 #define TOTAL_ENV_SIZE CONFIG_ENV_RANGE
 311 #else
 312 #define TOTAL_ENV_SIZE (CONFIG_ENV_RANGE * 2)
 313 #endif
 314 #endif
 315
 316 int do_update(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 317 {
 318         int ret;
 319         int erase_size = mtd->erasesize;
 320         int page_size = mtd->writesize;
 321         void *buf;
 322         char *load_addr;
 323         char *file_size;
 324         size_t size = 0;
 325         void *addr = NULL;
 326         struct mx28_fcb *fcb;
 327         unsigned long fcb_start_block = FCB_START_BLOCK;
 328         unsigned long num_fcb_blocks = NUM_FCB_BLOCKS;
 329         unsigned long fcb_end_block;
 330         unsigned long mtd_num_blocks = mtd->size / mtd->erasesize;
 331 #ifdef CONFIG_ENV_IS_IN_NAND
 332         unsigned long env_start_block = CONFIG_ENV_OFFSET / mtd->erasesize;
 333         unsigned long env_end_block = env_start_block +
 334                 DIV_ROUND_UP(TOTAL_ENV_SIZE, mtd->erasesize) - 1;
 335 #endif
 336         int optind;
 337         int fw1_set = 0;
 338         int fw2_set = 0;
 339         unsigned long fw1_start_block = 0, fw1_end_block;
 340         unsigned long fw2_start_block = 0, fw2_end_block;
 341         unsigned long fw_num_blocks;
 342         unsigned long extra_blocks = 2;
 343         nand_erase_options_t erase_opts = { 0, };
 344         size_t max_len1, max_len2;
 345         size_t actual;
 346
 347         for (optind = 1; optind < argc; optind++) {
 348                 if (strcmp(argv[optind], "-b") == 0) {
 349                         if (optind >= argc - 1) {
 350                                 printf("Option %s requires an argument\n", argv[optind]);
 351                                 return -EINVAL;
 352                         }
 353                         optind++;
 354                         fcb_start_block = simple_strtoul(argv[optind], NULL, 0);
 355                         if (fcb_start_block >= mtd_num_blocks) {
 356                                 printf("Block number %lu is out of range: 0..%lu\n",
 357                                         fcb_start_block, mtd_num_blocks - 1);
 358                                 return -EINVAL;
 359                         }
 360                 } else if (strcmp(argv[optind], "-n") == 0) {
 361                         if (optind >= argc - 1) {
 362                                 printf("Option %s requires an argument\n", argv[optind]);
 363                                 return -EINVAL;
 364                         }
 365                         optind++;
 366                         num_fcb_blocks = simple_strtoul(argv[optind], NULL, 0);
 367                         if (num_fcb_blocks > MAX_FCB_BLOCKS) {
 368                                 printf("Extraneous number of FCB blocks; max. allowed: %u\n",
 369                                         MAX_FCB_BLOCKS);
 370                                 return -EINVAL;
 371                         }
 372                 } else if (strcmp(argv[optind], "-f") == 0) {
 373                         if (optind >= argc - 1) {
 374                                 printf("Option %s requires an argument\n",
 375                                         argv[optind]);
 376                                 return -EINVAL;
 377                         }
 378                         optind++;
 379                         fw1_start_block = simple_strtoul(argv[optind], NULL, 0);
 380                         if (fw1_start_block >= mtd_num_blocks) {
 381                                 printf("Block number %lu is out of range: 0..%lu\n",
 382                                         fw1_start_block, mtd_num_blocks - 1);
 383                                 return -EINVAL;
 384                         }
 385                         fw1_set = 1;
 386                 } else if (strcmp(argv[optind], "-r") == 0) {
 387                         if (optind < argc - 1 && argv[optind + 1][0] != '-') {
 388                                 optind++;
 389                                 fw2_start_block = simple_strtoul(argv[optind],
 390                                                                 NULL, 0);
 391                                 if (fw2_start_block >= mtd_num_blocks) {
 392                                         printf("Block number %lu is out of range: 0..%lu\n",
 393                                                 fw2_start_block,
 394                                                 mtd_num_blocks - 1);
 395                                         return -EINVAL;
 396                                 }
 397                         }
 398                         fw2_set = 1;
 399                 } else if (strcmp(argv[optind], "-e") == 0) {
 400                         if (optind >= argc - 1) {
 401                                 printf("Option %s requires an argument\n",
 402                                         argv[optind]);
 403                                 return -EINVAL;
 404                         }
 405                         optind++;
 406                         extra_blocks = simple_strtoul(argv[optind], NULL, 0);
 407                         if (extra_blocks >= mtd_num_blocks) {
 408                                 printf("Extra block count %lu is out of range: 0..%lu\n",
 409                                         extra_blocks,
 410                                         mtd_num_blocks - 1);
 411                                 return -EINVAL;
 412                         }
 413                 } else if (argv[optind][0] == '-') {
 414                         printf("Unrecognized option %s\n", argv[optind]);
 415                         return -EINVAL;
 416                 } else {
 417                         break;
 418                 }
 419         }
 420
 421         load_addr = getenv("fileaddr");
 422         file_size = getenv("filesize");
 423
 424         if (argc - optind < 1 && load_addr == NULL) {
 425                 printf("Load address not specified\n");
 426                 return -EINVAL;
 427         }
 428         if (argc - optind < 2 && file_size == NULL) {
 429                 printf("WARNING: Image size not specified; overwriting whole uboot partition\n");
 430         }
 431         if (argc > optind) {
 432                 load_addr = NULL;
 433                 addr = (void *)simple_strtoul(argv[optind], NULL, 16);
 434                 optind++;
 435         }
 436         if (argc > optind) {
 437                 file_size = NULL;
 438                 size = simple_strtoul(argv[optind], NULL, 16);
 439                 optind++;
 440         }
 441         if (load_addr != NULL) {
 442                 addr = (void *)simple_strtoul(load_addr, NULL, 16);
 443                 printf("Using default load address %p\n", addr);
 444         }
 445         if (file_size != NULL) {
 446                 size = simple_strtoul(file_size, NULL, 16);
 447                 printf("Using default file size %08x\n", size);
 448         }
 449         fcb_end_block = fcb_start_block + num_fcb_blocks - 1;
 450         if (size > 0)
 451                 fw_num_blocks = DIV_ROUND_UP(size, mtd->erasesize);
 452         else
 453                 fw_num_blocks = CONFIG_U_BOOT_IMG_SIZE / mtd->erasesize - extra_blocks;
 454
 455         if (!fw1_set) {
 456                 fw1_start_block = fcb_end_block + 1;
 457                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 458         } else {
 459                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 460         }
 461
 462         if (fw2_set && fw2_start_block == 0) {
 463                 fw2_start_block = fw1_end_block + 1;
 464                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 465         } else {
 466                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 467         }
 468
 469 #ifdef CONFIG_ENV_IS_IN_NAND
 470         fail_if_overlap(fcb, env, "FCB", "Environment");
 471         fail_if_overlap(fw1, env, "FW1", "Environment");
 472 #endif
 473         fail_if_overlap(fcb, fw1, "FCB", "FW1");
 474         if (fw2_set) {
 475                 fail_if_overlap(fcb, fw2, "FCB", "FW2");
 476 #ifdef CONFIG_ENV_IS_IN_NAND
 477                 fail_if_overlap(fw2, env, "FW2", "Environment");
 478 #endif
 479                 fail_if_overlap(fw1, fw2, "FW1", "FW2");
 480         }
 481
 482         buf = malloc(erase_size);
 483         if (buf == NULL) {
 484                 printf("Failed to allocate buffer\n");
 485                 return -ENOMEM;
 486         }
 487
 488         /* search for bad blocks in FW1 block range */
 489         max_len1 = count_good_blocks(fw1_start_block, fw1_end_block);
 490         printf("%u good blocks in %lu..%lu\n",
 491                 max_len1, fw1_start_block, fw1_end_block);
 492         if (fw_num_blocks > max_len1) {
 493                 printf("Too many bad blocks in FW1 block range: %lu..%lu; max blocks: %u\n",
 494                         fw1_end_block + 1 - fw_num_blocks - extra_blocks,
 495                         fw1_end_block, max_len1);
 496                 return -EINVAL;
 497         }
 498
 499         /* search for bad blocks in FW2 block range */
 500         max_len2 = count_good_blocks(fw2_start_block, fw2_end_block);
 501         if (fw2_start_block > 0 && fw_num_blocks > max_len2) {
 502                 printf("Too many bad blocks in FW2 block range: %lu..%lu\n",
 503                         fw2_end_block + 1 - fw_num_blocks - extra_blocks,
 504                         fw2_end_block);
 505                 return -EINVAL;
 506         }
 507
 508         fcb = create_fcb(buf, fw1_start_block, fw2_start_block,
 509                         ALIGN(fw_num_blocks * mtd->erasesize, mtd->writesize));
 510         if (IS_ERR(fcb)) {
 511                 printf("Failed to initialize FCB: %ld\n", PTR_ERR(fcb));
 512                 return PTR_ERR(fcb);
 513         }
 514         encode_hamming_13_8(fcb, (void *)fcb + 512, 512);
 515
 516         ret = write_fcb(buf, fcb_start_block);
 517         if (ret) {
 518                 printf("Failed to write FCB to block %lu\n", fcb_start_block);
 519                 return ret;
 520         }
 521
 522         printf("Programming U-Boot image from %p to block %lu\n",
 523                 addr, fw1_start_block);
 524         if (size & (page_size - 1)) {
 525                 memset(addr + size, 0xff, size & (page_size - 1));
 526                 size = ALIGN(size, page_size);
 527         }
 528
 529         erase_opts.offset = fcb->fw1_start_page * page_size;
 530         erase_opts.length = (fw1_end_block - fw1_start_block + 1) *
 531                 mtd->erasesize;
 532         erase_opts.quiet = 1;
 533
 534         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 535                 erase_opts.offset + erase_opts.length - 1);
 536
 537         ret = nand_erase_opts(mtd, &erase_opts);
 538         if (ret) {
 539                 printf("Failed to erase flash: %d\n", ret);
 540                 return ret;
 541         }
 542         if (size == 0)
 543                 max_len1 *= mtd->erasesize;
 544         else
 545                 max_len1 = size;
 546
 547         printf("Programming flash @ %08x..%08x from %p\n",
 548                 fcb->fw1_start_page * page_size,
 549                 fcb->fw1_start_page * page_size + max_len1 - 1, addr);
 550         ret = nand_write_skip_bad(mtd, fcb->fw1_start_page * page_size,
 551                                 &max_len1, &actual, erase_opts.length, addr,
 552                                 WITH_DROP_FFS);
 553         if (ret || actual < size) {
 554                 printf("Failed to program flash: %d\n", ret);
 555                 return ret ?: -EIO;
 556         }
 557         if (fw2_start_block == 0) {
 558                 return ret;
 559         }
 560
 561         printf("Programming redundant U-Boot image to block %lu\n",
 562                 fw2_start_block);
 563         erase_opts.offset = fcb->fw2_start_page * page_size;
 564         erase_opts.length = (fw2_end_block - fw2_start_block + 1) *
 565                 mtd->erasesize;
 566         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 567                 erase_opts.offset + erase_opts.length - 1);
 568
 569         ret = nand_erase_opts(mtd, &erase_opts);
 570         if (ret) {
 571                 printf("Failed to erase flash: %d\n", ret);
 572                 return ret;
 573         }
 574         if (size == 0)
 575                 max_len2 *= mtd->erasesize;
 576         else
 577                 max_len2 = size;
 578         printf("Programming flash @ %08x..%08x from %p\n",
 579                 fcb->fw2_start_page * page_size,
 580                 fcb->fw2_start_page * page_size + max_len2 - 1, addr);
 581         ret = nand_write_skip_bad(mtd, fcb->fw2_start_page * page_size,
 582                                 &max_len2, &actual, erase_opts.length, addr,
 583                                 WITH_DROP_FFS);
 584         if (ret || actual < size) {
 585                 printf("Failed to program flash: %d\n", ret);
 586                 return ret ?: -EIO;
 587         }
 588         return ret;
 589 }
 590
 591 U_BOOT_CMD(romupdate, 11, 0, do_update,
 592         "Creates an FCB data structure and writes an U-Boot image to flash",
 593         "[-b #] [-n #] [-f #] [-r [#]] [<address>] [<length>]\n"
 594         "\t-b #\tfirst FCB block number (default 0)\n"
 595         "\t-n #\ttotal number of FCB blocks (default 1)\n"
 596         "\t-f #\twrite bootloader image at block #\n"
 597         "\t-r\twrite redundant bootloader image at next free block after first image\n"
 598         "\t-r #\twrite redundant bootloader image at block #\n"
 599         "\t-e #\tspecify number of redundant blocks per boot loader image (default 2)\n"
 600         "\t<address>\tRAM address of bootloader image (default: ${fileaddr}\n"
 601         "\t<length>\tlength of bootloader image in RAM (default: ${filesize}"
 602         );