board/karo/tx6/flash.c

   1 /*
   2  * Copyright (C) 2012-2015 Lothar Waßmann <LW@KARO-electronics.de>
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include <common.h>
  19 #include <malloc.h>
  20 #include <nand.h>
  21 #include <errno.h>
  22
  23 #include <linux/err.h>
  24 #include <jffs2/load_kernel.h>
  25
  26 #include <asm/io.h>
  27 #include <linux/sizes.h>
  28 #include <asm/arch/imx-regs.h>
  29 #include <asm/imx-common/regs-gpmi.h>
  30 #include <asm/imx-common/regs-bch.h>
  31
  32 struct mx6_nand_timing {
  33         u8 data_setup;
  34         u8 data_hold;
  35         u8 address_setup;
  36         u8 dsample_time;
  37         u8 nand_timing_state;
  38         u8 tREA;
  39         u8 tRLOH;
  40         u8 tRHOH;
  41 };
  42
  43 struct mx6_fcb {
  44         u32 checksum;
  45         u32 fingerprint;
  46         u32 version;
  47         struct mx6_nand_timing timing;
  48         u32 page_data_size;
  49         u32 total_page_size;
  50         u32 sectors_per_block;
  51         u32 number_of_nands;    /* not used by ROM code */
  52         u32 total_internal_die; /* not used by ROM code */
  53         u32 cell_type;          /* not used by ROM code */
  54         u32 ecc_blockn_type;
  55         u32 ecc_block0_size;
  56         u32 ecc_blockn_size;
  57         u32 ecc_block0_type;
  58         u32 metadata_size;
  59         u32 ecc_blocks_per_page;
  60         u32 rsrvd1[6];          /* not used by ROM code */
  61         u32 bch_mode;           /* erase_threshold */
  62         u32 rsrvd2[2];
  63         u32 fw1_start_page;
  64         u32 fw2_start_page;
  65         u32 fw1_sectors;
  66         u32 fw2_sectors;
  67         u32 dbbt_search_area;
  68         u32 bb_mark_byte;
  69         u32 bb_mark_startbit;
  70         u32 bb_mark_phys_offset;
  71         u32 bch_type;
  72         u32 rsrvd3[8]; /* Toggle NAND timing parameters */
  73         u32 disbbm;
  74         u32 bb_mark_spare_offset;
  75         u32 rsrvd4[9]; /* ONFI NAND parameters */
  76         u32 disbb_search;
  77 };
  78
  79 struct mx6_dbbt_header {
  80         u32 checksum;
  81         u32 fingerprint;
  82         u32 version;
  83         u32 number_bb;
  84         u32 number_pages;
  85         u8 spare[492];
  86 };
  87
  88 struct mx6_dbbt {
  89         u32 nand_number;
  90         u32 number_bb;
  91         u32 bb_num[2040 / 4];
  92 };
  93
  94 struct mx6_ivt {
  95         u32 magic;
  96         u32 app_start_addr;
  97         u32 rsrvd1;
  98         void *dcd;
  99         void *boot_data;
 100         void *self;
 101         void *csf;
 102         u32 rsrvd2;
 103 };
 104
 105 struct mx6_boot_data {
 106         void *start;
 107         u32 length;
 108         u32 plugin;
 109 };
 110
 111 #define BF_VAL(v, bf)           (((v) & bf##_MASK) >> bf##_OFFSET)
 112
 113 static nand_info_t *mtd = &nand_info[0];
 114 static bool doit;
 115
 116 #define BIT(v,n)        (((v) >> (n)) & 0x1)
 117
 118 static u8 calculate_parity_13_8(u8 d)
 119 {
 120         u8 p = 0;
 121
 122         p |= (BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 3) ^ BIT(d, 2))             << 0;
 123         p |= (BIT(d, 7) ^ BIT(d, 5) ^ BIT(d, 4) ^ BIT(d, 2) ^ BIT(d, 1)) << 1;
 124         p |= (BIT(d, 7) ^ BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 1) ^ BIT(d, 0)) << 2;
 125         p |= (BIT(d, 7) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 0))             << 3;
 126         p |= (BIT(d, 6) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 2) ^ BIT(d, 1) ^ BIT(d, 0)) << 4;
 127         return p;
 128 }
 129
 130 static void encode_hamming_13_8(void *_src, void *_ecc, size_t size)
 131 {
 132         int i;
 133         u8 *src = _src;
 134         u8 *ecc = _ecc;
 135
 136         for (i = 0; i < size; i++)
 137                 ecc[i] = calculate_parity_13_8(src[i]);
 138 }
 139
 140 static u32 calc_chksum(void *buf, size_t size)
 141 {
 142         u32 chksum = 0;
 143         u8 *bp = buf;
 144         size_t i;
 145
 146         for (i = 0; i < size; i++) {
 147                 chksum += bp[i];
 148         }
 149         return ~chksum;
 150 }
 151
 152 /*
 153   Physical organisation of data in NAND flash:
 154   metadata
 155   payload chunk 0 (may be empty)
 156   ecc for metadata + payload chunk 0
 157   payload chunk 1
 158   ecc for payload chunk 1
 159 ...
 160   payload chunk n
 161   ecc for payload chunk n
 162  */
 163
 164 static inline int calc_bb_offset(nand_info_t *mtd, struct mx6_fcb *fcb)
 165 {
 166         int bb_mark_offset;
 167         int chunk_data_size = fcb->ecc_blockn_size * 8;
 168         int chunk_ecc_size = (fcb->ecc_blockn_type << 1) * 13;
 169         int chunk_total_size = chunk_data_size + chunk_ecc_size;
 170         int bb_mark_chunk, bb_mark_chunk_offs;
 171
 172         bb_mark_offset = (mtd->writesize - fcb->metadata_size) * 8;
 173         if (fcb->ecc_block0_size == 0)
 174                 bb_mark_offset -= (fcb->ecc_block0_type << 1) * 13;
 175
 176         bb_mark_chunk = bb_mark_offset / chunk_total_size;
 177         bb_mark_chunk_offs = bb_mark_offset - (bb_mark_chunk * chunk_total_size);
 178         if (bb_mark_chunk_offs > chunk_data_size) {
 179                 printf("Unsupported ECC layout; BB mark resides in ECC data: %u\n",
 180                         bb_mark_chunk_offs);
 181                 return -EINVAL;
 182         }
 183         bb_mark_offset -= bb_mark_chunk * chunk_ecc_size;
 184         return bb_mark_offset;
 185 }
 186
 187 /*
 188  * return number of blocks to skip for a contiguous partition
 189  * of given # blocks
 190  */
 191 static int find_contig_space(int block, int num_blocks, int max_blocks)
 192 {
 193         int skip = 0;
 194         int found = 0;
 195         int last = block + max_blocks;
 196
 197         debug("Searching %u contiguous blocks from %d..%d\n",
 198                 num_blocks, block, block + max_blocks - 1);
 199         for (; block < last; block++) {
 200                 if (nand_block_isbad(mtd, block * mtd->erasesize)) {
 201                         skip += found + 1;
 202                         found = 0;
 203                         debug("Skipping %u blocks to %u\n",
 204                                 skip, block + 1);
 205                 } else {
 206                         found++;
 207                         if (found >= num_blocks) {
 208                                 debug("Found %u good blocks from %d..%d\n",
 209                                         found, block - found + 1, block);
 210                                 return skip;
 211                         }
 212                 }
 213         }
 214         return -ENOSPC;
 215 }
 216
 217 #define offset_of(p, m)         ((void *)&(p)->m - (void *)(p))
 218 #define pr_fcb_val(p, n)        debug("%-24s[%02x]=%08x(%d)\n", #n, offset_of(p, n), (p)->n, (p)->n)
 219
 220 static struct mx6_fcb *create_fcb(void *buf, int fw1_start_block,
 221                                 int fw2_start_block, int fw_num_blocks)
 222 {
 223         struct gpmi_regs *gpmi_base = (void *)GPMI_BASE_ADDRESS;
 224         struct bch_regs *bch_base = (void *)BCH_BASE_ADDRESS;
 225         u32 fl0, fl1;
 226         u32 t0;
 227         int metadata_size;
 228         int bb_mark_bit_offs;
 229         struct mx6_fcb *fcb;
 230         int fcb_offs;
 231
 232         if (gpmi_base == NULL || bch_base == NULL) {
 233                 return ERR_PTR(-ENOMEM);
 234         }
 235
 236         fl0 = readl(&bch_base->hw_bch_flash0layout0);
 237         fl1 = readl(&bch_base->hw_bch_flash0layout1);
 238         t0 = readl(&gpmi_base->hw_gpmi_timing0);
 239
 240         metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 241
 242         fcb = buf + ALIGN(metadata_size, 4);
 243         fcb_offs = (void *)fcb - buf;
 244
 245         memset(buf, 0xff, fcb_offs);
 246         memset(fcb, 0x00, sizeof(*fcb));
 247         memset(fcb + 1, 0xff, mtd->erasesize - fcb_offs - sizeof(*fcb));
 248
 249         strncpy((char *)&fcb->fingerprint, "FCB ", 4);
 250         fcb->version = cpu_to_be32(1);
 251
 252         fcb->disbb_search = 0;
 253         fcb->disbbm = 1;
 254
 255         /* ROM code assumes GPMI clock of 25 MHz */
 256         fcb->timing.data_setup = BF_VAL(t0, GPMI_TIMING0_DATA_SETUP) * 40;
 257         fcb->timing.data_hold = BF_VAL(t0, GPMI_TIMING0_DATA_HOLD) * 40;
 258         fcb->timing.address_setup = BF_VAL(t0, GPMI_TIMING0_ADDRESS_SETUP) * 40;
 259
 260         fcb->page_data_size = mtd->writesize;
 261         fcb->total_page_size = mtd->writesize + mtd->oobsize;
 262         fcb->sectors_per_block = mtd->erasesize / mtd->writesize;
 263
 264         fcb->ecc_block0_type = BF_VAL(fl0, BCH_FLASHLAYOUT0_ECC0);
 265         fcb->ecc_block0_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_DATA0_SIZE) * 4;
 266         fcb->ecc_blockn_type = BF_VAL(fl1, BCH_FLASHLAYOUT1_ECCN);
 267         fcb->ecc_blockn_size = BF_VAL(fl1, BCH_FLASHLAYOUT1_DATAN_SIZE) * 4;
 268
 269         pr_fcb_val(fcb, ecc_block0_type);
 270         pr_fcb_val(fcb, ecc_blockn_type);
 271         pr_fcb_val(fcb, ecc_block0_size);
 272         pr_fcb_val(fcb, ecc_blockn_size);
 273
 274         fcb->metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 275         fcb->ecc_blocks_per_page = BF_VAL(fl0, BCH_FLASHLAYOUT0_NBLOCKS);
 276         fcb->bch_mode = readl(&bch_base->hw_bch_mode);
 277         fcb->bch_type = 0; /* BCH20 */
 278
 279         fcb->fw1_start_page = fw1_start_block * fcb->sectors_per_block;
 280         fcb->fw1_sectors = fw_num_blocks * fcb->sectors_per_block;
 281         pr_fcb_val(fcb, fw1_start_page);
 282         pr_fcb_val(fcb, fw1_sectors);
 283
 284         if (fw2_start_block != 0 && fw2_start_block < mtd->size / mtd->erasesize) {
 285                 fcb->fw2_start_page = fw2_start_block * fcb->sectors_per_block;
 286                 fcb->fw2_sectors = fcb->fw1_sectors;
 287                 pr_fcb_val(fcb, fw2_start_page);
 288                 pr_fcb_val(fcb, fw2_sectors);
 289         }
 290
 291         fcb->dbbt_search_area = 0;
 292
 293         bb_mark_bit_offs = calc_bb_offset(mtd, fcb);
 294         if (bb_mark_bit_offs < 0)
 295                 return ERR_PTR(bb_mark_bit_offs);
 296         fcb->bb_mark_byte = bb_mark_bit_offs / 8;
 297         fcb->bb_mark_startbit = bb_mark_bit_offs % 8;
 298         fcb->bb_mark_phys_offset = mtd->writesize;
 299
 300         pr_fcb_val(fcb, bb_mark_byte);
 301         pr_fcb_val(fcb, bb_mark_startbit);
 302         pr_fcb_val(fcb, bb_mark_phys_offset);
 303
 304         fcb->checksum = calc_chksum(&fcb->fingerprint, 512 - 4);
 305         return fcb;
 306 }
 307
 308 static int find_fcb(void *ref, int page)
 309 {
 310         int ret = 0;
 311         struct nand_chip *chip = mtd->priv;
 312         void *buf = malloc(mtd->erasesize);
 313
 314         if (buf == NULL) {
 315                 return -ENOMEM;
 316         }
 317         chip->select_chip(mtd, 0);
 318         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
 319         ret = chip->ecc.read_page_raw(mtd, chip, buf, 1, page);
 320         if (ret) {
 321                 printf("Failed to read FCB from page %u: %d\n", page, ret);
 322                 goto out;
 323         }
 324         if (memcmp(buf, ref, mtd->writesize) == 0) {
 325                 debug("Found FCB in page %u (%08x)\n",
 326                         page, page * mtd->writesize);
 327                 ret = 1;
 328         }
 329 out:
 330         chip->select_chip(mtd, -1);
 331         free(buf);
 332         return ret;
 333 }
 334
 335 static int write_fcb(void *buf, int block)
 336 {
 337         int ret;
 338         struct nand_chip *chip = mtd->priv;
 339         int page = block * mtd->erasesize / mtd->writesize;
 340
 341         ret = find_fcb(buf, page);
 342         if (ret > 0) {
 343                 printf("FCB at block %d is up to date\n", block);
 344                 return 0;
 345         }
 346
 347         if (doit) {
 348                 ret = nand_erase(mtd, block * mtd->erasesize, mtd->erasesize);
 349                 if (ret) {
 350                         printf("Failed to erase FCB block %u\n", block);
 351                         return ret;
 352                 }
 353         }
 354
 355         printf("Writing FCB to block %d @ %08llx\n", block,
 356                 (u64)block * mtd->erasesize);
 357         if (doit) {
 358                 chip->select_chip(mtd, 0);
 359                 ret = chip->write_page(mtd, chip, 0, mtd->writesize,
 360                                 buf, 1, page, 0, 1);
 361                 if (ret) {
 362                         printf("Failed to write FCB to block %u: %d\n", block, ret);
 363                 }
 364                 chip->select_chip(mtd, -1);
 365         }
 366         return ret;
 367 }
 368
 369 #define chk_overlap(a,b)                                \
 370         ((a##_start_block <= b##_end_block &&           \
 371                 a##_end_block >= b##_start_block) ||    \
 372         (b##_start_block <= a##_end_block &&            \
 373                 b##_end_block >= a##_start_block))
 374
 375 #define fail_if_overlap(a,b,m1,m2) do {                                 \
 376         if (!doit)                                                      \
 377                 printf("check: %s[%lu..%lu] <> %s[%lu..%lu]\n",         \
 378                         m1, a##_start_block, a##_end_block,             \
 379                         m2, b##_start_block, b##_end_block);            \
 380         if (a##_end_block < a##_start_block)                            \
 381                 printf("Invalid start/end block # for %s\n", m1);       \
 382         if (b##_end_block < b##_start_block)                            \
 383                 printf("Invalid start/end block # for %s\n", m2);       \
 384         if (chk_overlap(a, b)) {                                        \
 385                 printf("%s blocks %lu..%lu overlap %s in blocks %lu..%lu!\n", \
 386                         m1, a##_start_block, a##_end_block,             \
 387                         m2, b##_start_block, b##_end_block);            \
 388                 return -EINVAL;                                         \
 389         }                                                               \
 390 } while (0)
 391
 392 static int tx6_prog_uboot(void *addr, int start_block, int skip,
 393                         size_t size, size_t max_len)
 394 {
 395         int ret;
 396         nand_erase_options_t erase_opts = { 0, };
 397         size_t actual;
 398         size_t prg_length = max_len - skip * mtd->erasesize;
 399         int prg_start = (start_block + skip) * mtd->erasesize;
 400
 401         erase_opts.offset = start_block * mtd->erasesize;
 402         erase_opts.length = max_len;
 403         erase_opts.quiet = 1;
 404
 405         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 406                 erase_opts.offset + erase_opts.length - 1);
 407         if (doit) {
 408                 ret = nand_erase_opts(mtd, &erase_opts);
 409                 if (ret) {
 410                         printf("Failed to erase flash: %d\n", ret);
 411                         return ret;
 412                 }
 413         }
 414
 415         printf("Programming flash @ %08x..%08x from %p\n",
 416                 prg_start, prg_start + size - 1, addr);
 417         if (doit) {
 418                 actual = size;
 419                 ret = nand_write_skip_bad(mtd, prg_start, &actual, NULL,
 420                                         prg_length, addr, WITH_DROP_FFS);
 421                 if (ret) {
 422                         printf("Failed to program flash: %d\n", ret);
 423                         return ret;
 424                 }
 425                 if (actual < size) {
 426                         printf("Could only write %u of %u bytes\n", actual, size);
 427                         return -EIO;
 428                 }
 429         }
 430         return 0;
 431 }
 432
 433 #ifdef CONFIG_ENV_IS_IN_NAND
 434 #ifndef CONFIG_ENV_OFFSET_REDUND
 435 #define TOTAL_ENV_SIZE CONFIG_ENV_RANGE
 436 #else
 437 #define TOTAL_ENV_SIZE (CONFIG_ENV_RANGE * 2)
 438 #endif
 439 #endif
 440
 441 int do_update(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 442 {
 443         int ret;
 444         const unsigned long fcb_start_block = 0, fcb_end_block = 0;
 445         int erase_size = mtd->erasesize;
 446         void *buf;
 447         char *load_addr;
 448         char *file_size;
 449         size_t size = 0;
 450         void *addr = NULL;
 451         struct mx6_fcb *fcb;
 452         unsigned long mtd_num_blocks = mtd->size / mtd->erasesize;
 453 #ifdef CONFIG_ENV_IS_IN_NAND
 454         unsigned long env_start_block = CONFIG_ENV_OFFSET / mtd->erasesize;
 455         unsigned long env_end_block = env_start_block +
 456                 DIV_ROUND_UP(TOTAL_ENV_SIZE, mtd->erasesize) - 1;
 457 #endif
 458         int optind;
 459         int fw2_set = 0;
 460         unsigned long fw1_start_block = 0, fw1_end_block;
 461         unsigned long fw2_start_block = 0, fw2_end_block;
 462         unsigned long fw_num_blocks;
 463         int fw1_skip, fw2_skip;
 464         unsigned long extra_blocks = 0;
 465         size_t max_len1, max_len2;
 466         struct mtd_device *dev;
 467         struct part_info *part_info;
 468         struct part_info *redund_part_info;
 469         const char *uboot_part = "u-boot";
 470         const char *redund_part = NULL;
 471         u8 part_num;
 472         u8 redund_part_num;
 473
 474         ret = mtdparts_init();
 475         if (ret)
 476                 return ret;
 477
 478         doit = true;
 479         for (optind = 1; optind < argc; optind++) {
 480                 char *endp;
 481
 482                 if (strcmp(argv[optind], "-f") == 0) {
 483                         if (optind >= argc - 1) {
 484                                 printf("Option %s requires an argument\n",
 485                                         argv[optind]);
 486                                 return -EINVAL;
 487                         }
 488                         optind++;
 489                         fw1_start_block = simple_strtoul(argv[optind], &endp, 0);
 490                         if (*endp != '\0') {
 491                                 uboot_part = argv[optind];
 492                                 continue;
 493                         }
 494                         uboot_part = NULL;
 495                         if (fw1_start_block >= mtd_num_blocks) {
 496                                 printf("Block number %lu is out of range: 0..%lu\n",
 497                                         fw1_start_block, mtd_num_blocks - 1);
 498                                 return -EINVAL;
 499                         }
 500                 } else if (strcmp(argv[optind], "-r") == 0) {
 501                         fw2_set = 1;
 502                         if (optind < argc - 1 && argv[optind + 1][0] != '-') {
 503                                 optind++;
 504                                 fw2_start_block = simple_strtoul(argv[optind],
 505                                                                 &endp, 0);
 506                                 if (*endp != '\0') {
 507                                         redund_part = argv[optind];
 508                                         continue;
 509                                 }
 510                                 if (fw2_start_block >= mtd_num_blocks) {
 511                                         printf("Block number %lu is out of range: 0..%lu\n",
 512                                                 fw2_start_block,
 513                                                 mtd_num_blocks - 1);
 514                                         return -EINVAL;
 515                                 }
 516                         }
 517                 } else if (strcmp(argv[optind], "-e") == 0) {
 518                         if (optind >= argc - 1) {
 519                                 printf("Option %s requires an argument\n",
 520                                         argv[optind]);
 521                                 return -EINVAL;
 522                         }
 523                         optind++;
 524                         extra_blocks = simple_strtoul(argv[optind], NULL, 0);
 525                         if (extra_blocks >= mtd_num_blocks) {
 526                                 printf("Extra block count %lu is out of range: 0..%lu\n",
 527                                         extra_blocks,
 528                                         mtd_num_blocks - 1);
 529                                 return -EINVAL;
 530                         }
 531                 } else if (strcmp(argv[optind], "-n") == 0) {
 532                         doit = false;
 533                 } else if (argv[optind][0] == '-') {
 534                         printf("Unrecognized option %s\n", argv[optind]);
 535                         return -EINVAL;
 536                 } else {
 537                         break;
 538                 }
 539         }
 540
 541         load_addr = getenv("fileaddr");
 542         file_size = getenv("filesize");
 543
 544         if (argc - optind < 1 && load_addr == NULL) {
 545                 printf("Load address not specified\n");
 546                 return -EINVAL;
 547         }
 548         if (argc - optind < 2 && file_size == NULL) {
 549                 if (uboot_part) {
 550                         printf("WARNING: Image size not specified; overwriting whole '%s' partition\n",
 551                                 uboot_part);
 552                         printf("This will only work, if there are no bad blocks inside this partition!\n");
 553                 } else {
 554                         printf("ERROR: Image size must be specified\n");
 555                         return -EINVAL;
 556                 }
 557         }
 558         if (argc > optind) {
 559                 load_addr = NULL;
 560                 addr = (void *)simple_strtoul(argv[optind], NULL, 16);
 561                 optind++;
 562         }
 563         if (argc > optind) {
 564                 file_size = NULL;
 565                 size = simple_strtoul(argv[optind], NULL, 16);
 566                 optind++;
 567         }
 568         if (load_addr != NULL) {
 569                 addr = (void *)simple_strtoul(load_addr, NULL, 16);
 570                 printf("Using default load address %p\n", addr);
 571         }
 572         if (file_size != NULL) {
 573                 size = simple_strtoul(file_size, NULL, 16);
 574                 printf("Using default file size %08x\n", size);
 575         }
 576         if (size > 0)
 577                 fw_num_blocks = DIV_ROUND_UP(size, mtd->erasesize);
 578         else
 579                 fw_num_blocks = 0;
 580
 581         if (uboot_part) {
 582                 ret = find_dev_and_part(uboot_part, &dev, &part_num,
 583                                         &part_info);
 584                 if (ret) {
 585                         printf("Failed to find '%s' partition: %d\n",
 586                                 uboot_part, ret);
 587                         return ret;
 588                 }
 589                 fw1_start_block = part_info->offset / mtd->erasesize;
 590                 max_len1 = part_info->size;
 591                 if (size == 0)
 592                         fw_num_blocks = max_len1 / mtd->erasesize;
 593         } else {
 594                 max_len1 = (fw_num_blocks + extra_blocks) * mtd->erasesize;
 595         }
 596
 597         if (redund_part) {
 598                 ret = find_dev_and_part(redund_part, &dev, &redund_part_num,
 599                                         &redund_part_info);
 600                 if (ret) {
 601                         printf("Failed to find '%s' partition: %d\n",
 602                                 redund_part, ret);
 603                         return ret;
 604                 }
 605                 fw2_start_block = redund_part_info->offset / mtd->erasesize;
 606                 max_len2 = redund_part_info->size;
 607                 if (fw2_start_block == fcb_start_block) {
 608                         fw2_start_block++;
 609                         max_len2 -= mtd->erasesize;
 610                 }
 611                 if (size == 0)
 612                         fw_num_blocks = max_len2 / mtd->erasesize;
 613         } else if (fw2_set) {
 614                 max_len2 = (fw_num_blocks + extra_blocks) * mtd->erasesize;
 615         } else {
 616                 max_len2 = 0;
 617         }
 618
 619         fw1_skip = find_contig_space(fw1_start_block, fw_num_blocks,
 620                                 max_len1 / mtd->erasesize);
 621         if (fw1_skip < 0) {
 622                 printf("Could not find %lu contiguous good blocks for fw image in blocks %lu..%lu\n",
 623                         fw_num_blocks, fw1_start_block,
 624                         fw1_start_block + max_len1 / mtd->erasesize - 1);
 625                 if (uboot_part) {
 626 #ifdef CONFIG_ENV_IS_IN_NAND
 627                         if (part_info->offset <= CONFIG_ENV_OFFSET + TOTAL_ENV_SIZE) {
 628                                 printf("Use a different partition\n");
 629                         } else {
 630                                 printf("Increase the size of the '%s' partition\n",
 631                                         uboot_part);
 632                         }
 633 #else
 634                         printf("Increase the size of the '%s' partition\n",
 635                                 uboot_part);
 636 #endif
 637                 } else {
 638                         printf("Increase the number of spare blocks to use with the '-e' option\n");
 639                 }
 640                 return -ENOSPC;
 641         }
 642         if (extra_blocks)
 643                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 644         else
 645                 fw1_end_block = fw1_start_block + fw_num_blocks + fw1_skip - 1;
 646
 647         if (fw2_set && fw2_start_block == 0)
 648                 fw2_start_block = fw1_end_block + 1;
 649         if (fw2_start_block > 0) {
 650                 fw2_skip = find_contig_space(fw2_start_block, fw_num_blocks,
 651                                         max_len2 / mtd->erasesize);
 652                 if (fw2_skip < 0) {
 653                         printf("Could not find %lu contiguous good blocks for redundant fw image in blocks %lu..%lu\n",
 654                                 fw_num_blocks, fw2_start_block,
 655                                 fw2_start_block + max_len2 / mtd->erasesize - 1);
 656                         if (redund_part) {
 657                                 printf("Increase the size of the '%s' partition or use a different partition\n",
 658                                         redund_part);
 659                         } else {
 660                                 printf("Increase the number of spare blocks to use with the '-e' option\n");
 661                         }
 662                         return -ENOSPC;
 663                 }
 664         } else {
 665                 fw2_skip = 0;
 666         }
 667         if (extra_blocks)
 668                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 669         else
 670                 fw2_end_block = fw2_start_block + fw_num_blocks + fw2_skip - 1;
 671
 672 #ifdef CONFIG_ENV_IS_IN_NAND
 673         fail_if_overlap(fcb, env, "FCB", "Environment");
 674         fail_if_overlap(fw1, env, "FW1", "Environment");
 675 #endif
 676         fail_if_overlap(fcb, fw1, "FCB", "FW1");
 677         if (fw2_set) {
 678                 fail_if_overlap(fcb, fw2, "FCB", "FW2");
 679 #ifdef CONFIG_ENV_IS_IN_NAND
 680                 fail_if_overlap(fw2, env, "FW2", "Environment");
 681 #endif
 682                 fail_if_overlap(fw1, fw2, "FW1", "FW2");
 683         }
 684         fw1_start_block += fw1_skip;
 685         fw2_start_block += fw2_skip;
 686
 687         buf = memalign(SZ_128K, erase_size);
 688         if (buf == NULL) {
 689                 printf("Failed to allocate buffer\n");
 690                 return -ENOMEM;
 691         }
 692
 693         fcb = create_fcb(buf, fw1_start_block,
 694                         fw2_start_block, fw_num_blocks);
 695         if (IS_ERR(fcb)) {
 696                 printf("Failed to initialize FCB: %ld\n", PTR_ERR(fcb));
 697                 ret = PTR_ERR(fcb);
 698                 goto out;
 699         }
 700         encode_hamming_13_8(fcb, (void *)fcb + 512, 512);
 701
 702         ret = write_fcb(buf, fcb_start_block);
 703         if (ret) {
 704                 printf("Failed to write FCB to block %lu\n", fcb_start_block);
 705                 return ret;
 706         }
 707
 708         printf("Programming U-Boot image from %p to block %lu @ %08llx\n",
 709                 buf, fw1_start_block, (u64)fw1_start_block * mtd->erasesize);
 710         ret = tx6_prog_uboot(addr, fw1_start_block, fw1_skip, size,
 711                         max_len1);
 712
 713         if (ret || fw2_start_block == 0)
 714                 goto out;
 715
 716         printf("Programming redundant U-Boot image to block %lu @ %08llx\n",
 717                 fw2_start_block, (u64)fw2_start_block * mtd->erasesize);
 718         ret = tx6_prog_uboot(addr, fw2_start_block, fw2_skip, size,
 719                         max_len2);
 720 out:
 721         free(buf);
 722         return ret;
 723 }
 724
 725 U_BOOT_CMD(romupdate, 11, 0, do_update,
 726         "Creates an FCB data structure and writes an U-Boot image to flash",
 727         "[-f {<part>|block#}] [-r [{<part>|block#}]] [-e #] [<address>] [<length>]\n"
 728         "\t-f <part>\twrite bootloader image to partition <part>\n"
 729         "\t-f #\t\twrite bootloader image at block # (decimal)\n"
 730         "\t-r\t\twrite redundant bootloader image at next free block after first image\n"
 731         "\t-r <part>\twrite redundant bootloader image to partition <part>\n"
 732         "\t-r #\t\twrite redundant bootloader image at block # (decimal)\n"
 733         "\t-e #\t\tspecify number of redundant blocks per boot loader image\n"
 734         "\t\t\t(only valid if -f or -r specify a flash address rather than a partition name)\n"
 735         "\t-n\t\tshow what would be done without actually updating the flash\n"
 736         "\t<address>\tRAM address of bootloader image (default: ${fileaddr})\n"
 737         "\t<length>\tlength of bootloader image in RAM (default: ${filesize})"
 738         );