board/karo/tx28/flash.c

   1 /*
   2  * Copyright (C) 2011-2016 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/regs-base.h>
  29 #include <asm/imx-common/regs-gpmi.h>
  30 #include <asm/imx-common/regs-bch.h>
  31
  32 struct mx28_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 mx28_fcb {
  44         u32 checksum;
  45         u32 fingerprint;
  46         u32 version;
  47         struct mx28_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 rsrvd[6];            /* not used by ROM code */
  61         u32 bch_mode;
  62         u32 boot_patch;
  63         u32 patch_sectors;
  64         u32 fw1_start_page;
  65         u32 fw2_start_page;
  66         u32 fw1_sectors;
  67         u32 fw2_sectors;
  68         u32 dbbt_search_area;
  69         u32 bb_mark_byte;
  70         u32 bb_mark_startbit;
  71         u32 bb_mark_phys_offset;
  72 };
  73
  74 #define BF_VAL(v, bf)           (((v) & bf##_MASK) >> bf##_OFFSET)
  75
  76 static nand_info_t *mtd = &nand_info[0];
  77 static bool doit;
  78
  79 #define BIT(v,n)        (((v) >> (n)) & 0x1)
  80
  81 static u8 calculate_parity_13_8(u8 d)
  82 {
  83         u8 p = 0;
  84
  85         p |= (BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 3) ^ BIT(d, 2))             << 0;
  86         p |= (BIT(d, 7) ^ BIT(d, 5) ^ BIT(d, 4) ^ BIT(d, 2) ^ BIT(d, 1)) << 1;
  87         p |= (BIT(d, 7) ^ BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 1) ^ BIT(d, 0)) << 2;
  88         p |= (BIT(d, 7) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 0))             << 3;
  89         p |= (BIT(d, 6) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 2) ^ BIT(d, 1) ^ BIT(d, 0)) << 4;
  90         return p;
  91 }
  92
  93 static void encode_hamming_13_8(void *_src, void *_ecc, size_t size)
  94 {
  95         int i;
  96         u8 *src = _src;
  97         u8 *ecc = _ecc;
  98
  99         for (i = 0; i < size; i++)
 100                 ecc[i] = calculate_parity_13_8(src[i]);
 101 }
 102
 103 static u32 calc_chksum(void *buf, size_t size)
 104 {
 105         u32 chksum = 0;
 106         u8 *bp = buf;
 107         size_t i;
 108
 109         for (i = 0; i < size; i++) {
 110                 chksum += bp[i];
 111         }
 112         return ~chksum;
 113 }
 114
 115 /*
 116   Physical organisation of data in NAND flash:
 117   metadata
 118   payload chunk 0 (may be empty)
 119   ecc for metadata + payload chunk 0
 120   payload chunk 1
 121   ecc for payload chunk 1
 122 ...
 123   payload chunk n
 124   ecc for payload chunk n
 125  */
 126
 127 static int calc_bb_offset(nand_info_t *mtd, struct mx28_fcb *fcb)
 128 {
 129         int bb_mark_offset;
 130         int chunk_data_size = fcb->ecc_blockn_size * 8;
 131         int chunk_ecc_size = (fcb->ecc_blockn_type << 1) * 13;
 132         int chunk_total_size = chunk_data_size + chunk_ecc_size;
 133         int bb_mark_chunk, bb_mark_chunk_offs;
 134
 135         bb_mark_offset = (mtd->writesize - fcb->metadata_size) * 8;
 136         if (fcb->ecc_block0_size == 0)
 137                 bb_mark_offset -= (fcb->ecc_block0_type << 1) * 13;
 138
 139         bb_mark_chunk = bb_mark_offset / chunk_total_size;
 140         bb_mark_chunk_offs = bb_mark_offset - (bb_mark_chunk * chunk_total_size);
 141         if (bb_mark_chunk_offs > chunk_data_size) {
 142                 printf("Unsupported ECC layout; BB mark resides in ECC data: %u\n",
 143                         bb_mark_chunk_offs);
 144                 return -EINVAL;
 145         }
 146         bb_mark_offset -= bb_mark_chunk * chunk_ecc_size;
 147         return bb_mark_offset;
 148 }
 149
 150 /*
 151  * return number of blocks to skip for a contiguous partition
 152  * of given # blocks
 153  */
 154 static int find_contig_space(int block, int num_blocks, int max_blocks)
 155 {
 156         int skip = 0;
 157         int found = 0;
 158         int last = block + max_blocks;
 159
 160         debug("Searching %u contiguous blocks from %d..%d\n",
 161                 num_blocks, block, block + max_blocks - 1);
 162         for (; block < last; block++) {
 163                 if (nand_block_isbad(mtd, block * mtd->erasesize)) {
 164                         skip += found + 1;
 165                         found = 0;
 166                         debug("Skipping %u blocks to %u\n",
 167                                 skip, block + 1);
 168                 } else {
 169                         found++;
 170                         if (found >= num_blocks) {
 171                                 debug("Found %u good blocks from %d..%d\n",
 172                                         found, block - found + 1, block);
 173                                 return skip;
 174                         }
 175                 }
 176         }
 177         return -ENOSPC;
 178 }
 179
 180 #define pr_fcb_val(p, n)        debug("%s=%08x(%d)\n", #n, (p)->n, (p)->n)
 181
 182 static struct mx28_fcb *create_fcb(void *buf, int fw1_start_block,
 183                                 int fw2_start_block, int fw_num_blocks)
 184 {
 185         struct gpmi_regs *gpmi_base = (void *)GPMI_BASE_ADDRESS;
 186         struct bch_regs *bch_base = (void *)BCH_BASE_ADDRESS;
 187         u32 fl0, fl1;
 188         u32 t0;
 189         int metadata_size;
 190         int bb_mark_bit_offs;
 191         struct mx28_fcb *fcb;
 192         int fcb_offs;
 193
 194         if (gpmi_base == NULL || bch_base == NULL) {
 195                 return ERR_PTR(-ENOMEM);
 196         }
 197
 198         fl0 = readl(&bch_base->hw_bch_flash0layout0);
 199         fl1 = readl(&bch_base->hw_bch_flash0layout1);
 200         t0 = readl(&gpmi_base->hw_gpmi_timing0);
 201
 202         metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 203
 204         fcb = buf + ALIGN(metadata_size, 4);
 205         fcb_offs = (void *)fcb - buf;
 206
 207         memset(buf, 0xff, fcb_offs);
 208         memset(fcb, 0x00, sizeof(*fcb));
 209         memset(fcb + 1, 0xff, mtd->erasesize - fcb_offs - sizeof(*fcb));
 210
 211         strncpy((char *)&fcb->fingerprint, "FCB ", 4);
 212         fcb->version = cpu_to_be32(1);
 213
 214         /* ROM code assumes GPMI clock of 25 MHz */
 215         fcb->timing.data_setup = BF_VAL(t0, GPMI_TIMING0_DATA_SETUP) * 40;
 216         fcb->timing.data_hold = BF_VAL(t0, GPMI_TIMING0_DATA_HOLD) * 40;
 217         fcb->timing.address_setup = BF_VAL(t0, GPMI_TIMING0_ADDRESS_SETUP) * 40;
 218
 219         fcb->page_data_size = mtd->writesize;
 220         fcb->total_page_size = mtd->writesize + mtd->oobsize;
 221         fcb->sectors_per_block = mtd->erasesize / mtd->writesize;
 222
 223         fcb->ecc_block0_type = BF_VAL(fl0, BCH_FLASHLAYOUT0_ECC0);
 224         fcb->ecc_block0_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_DATA0_SIZE);
 225         fcb->ecc_blockn_type = BF_VAL(fl1, BCH_FLASHLAYOUT1_ECCN);
 226         fcb->ecc_blockn_size = BF_VAL(fl1, BCH_FLASHLAYOUT1_DATAN_SIZE);
 227
 228         pr_fcb_val(fcb, ecc_block0_type);
 229         pr_fcb_val(fcb, ecc_blockn_type);
 230         pr_fcb_val(fcb, ecc_block0_size);
 231         pr_fcb_val(fcb, ecc_blockn_size);
 232
 233         fcb->metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 234         fcb->ecc_blocks_per_page = BF_VAL(fl0, BCH_FLASHLAYOUT0_NBLOCKS);
 235         fcb->bch_mode = readl(&bch_base->hw_bch_mode);
 236
 237         fcb->fw1_start_page = fw1_start_block * fcb->sectors_per_block;
 238         fcb->fw1_sectors = fw_num_blocks * fcb->sectors_per_block;
 239         pr_fcb_val(fcb, fw1_start_page);
 240         pr_fcb_val(fcb, fw1_sectors);
 241
 242         if (fw2_start_block != 0 && fw2_start_block < mtd->size / mtd->erasesize) {
 243                 fcb->fw2_start_page = fw2_start_block * fcb->sectors_per_block;
 244                 fcb->fw2_sectors = fcb->fw1_sectors;
 245                 pr_fcb_val(fcb, fw2_start_page);
 246                 pr_fcb_val(fcb, fw2_sectors);
 247         }
 248
 249         fcb->dbbt_search_area = 1;
 250
 251         bb_mark_bit_offs = calc_bb_offset(mtd, fcb);
 252         if (bb_mark_bit_offs < 0)
 253                 return ERR_PTR(bb_mark_bit_offs);
 254         fcb->bb_mark_byte = bb_mark_bit_offs / 8;
 255         fcb->bb_mark_startbit = bb_mark_bit_offs % 8;
 256         fcb->bb_mark_phys_offset = mtd->writesize;
 257
 258         pr_fcb_val(fcb, bb_mark_byte);
 259         pr_fcb_val(fcb, bb_mark_startbit);
 260         pr_fcb_val(fcb, bb_mark_phys_offset);
 261
 262         fcb->checksum = calc_chksum(&fcb->fingerprint, 512 - 4);
 263         return fcb;
 264 }
 265
 266 static int find_fcb(void *ref, int page)
 267 {
 268         int ret = 0;
 269         struct nand_chip *chip = mtd->priv;
 270         void *buf = malloc(mtd->erasesize);
 271
 272         if (buf == NULL) {
 273                 return -ENOMEM;
 274         }
 275         chip->select_chip(mtd, 0);
 276         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
 277         ret = chip->ecc.read_page_raw(mtd, chip, buf, 1, page);
 278         if (ret) {
 279                 printf("Failed to read FCB from page %u: %d\n", page, ret);
 280                 goto out;
 281         }
 282         if (memcmp(buf, ref, mtd->writesize) == 0) {
 283                 debug("Found FCB in page %u (%08x)\n",
 284                         page, page * mtd->writesize);
 285                 ret = 1;
 286         }
 287 out:
 288         chip->select_chip(mtd, -1);
 289         free(buf);
 290         return ret;
 291 }
 292
 293 static int write_fcb(void *buf, int block)
 294 {
 295         int ret;
 296         struct nand_chip *chip = mtd->priv;
 297         int page = block * mtd->erasesize / mtd->writesize;
 298
 299         ret = find_fcb(buf, page);
 300         if (ret > 0) {
 301                 printf("FCB at block %d is up to date\n", block);
 302                 return 0;
 303         }
 304
 305         if (doit) {
 306                 ret = nand_erase(mtd, block * mtd->erasesize, mtd->erasesize);
 307                 if (ret) {
 308                         printf("Failed to erase FCB block %u\n", block);
 309                         return ret;
 310                 }
 311         }
 312
 313         printf("Writing FCB to block %d @ %08llx\n", block,
 314                 (u64)block * mtd->erasesize);
 315         if (doit) {
 316                 chip->select_chip(mtd, 0);
 317                 ret = chip->write_page(mtd, chip, 0, mtd->writesize,
 318                                 buf, 1, page, 0, 1);
 319                 if (ret) {
 320                         printf("Failed to write FCB to block %u: %d\n", block, ret);
 321                 }
 322                 chip->select_chip(mtd, -1);
 323         }
 324         return ret;
 325 }
 326
 327 #define chk_overlap(a,b)                                \
 328         ((a##_start_block <= b##_end_block &&           \
 329                 a##_end_block >= b##_start_block) ||    \
 330         (b##_start_block <= a##_end_block &&            \
 331                 b##_end_block >= a##_start_block))
 332
 333 #define fail_if_overlap(a,b,m1,m2) do {                                 \
 334         if (!doit)                                                      \
 335                 printf("check: %s[%lu..%lu] <> %s[%lu..%lu]\n",         \
 336                         m1, a##_start_block, a##_end_block,             \
 337                         m2, b##_start_block, b##_end_block);            \
 338         if (a##_end_block < a##_start_block)                            \
 339                 printf("Invalid start/end block # for %s\n", m1);       \
 340         if (b##_end_block < b##_start_block)                            \
 341                 printf("Invalid start/end block # for %s\n", m2);       \
 342         if (chk_overlap(a, b)) {                                        \
 343                 printf("%s blocks %lu..%lu overlap %s in blocks %lu..%lu!\n", \
 344                         m1, a##_start_block, a##_end_block,             \
 345                         m2, b##_start_block, b##_end_block);            \
 346                 return -EINVAL;                                         \
 347         }                                                               \
 348 } while (0)
 349
 350 static int tx28_prog_uboot(void *addr, int start_block, int skip,
 351                         size_t size, size_t max_len)
 352 {
 353         int ret;
 354         nand_erase_options_t erase_opts = { 0, };
 355         size_t actual;
 356         size_t prg_length = max_len - skip * mtd->erasesize;
 357         int prg_start = start_block * mtd->erasesize;
 358
 359         erase_opts.offset = (start_block - skip) * mtd->erasesize;
 360         erase_opts.length = max_len;
 361         erase_opts.quiet = 1;
 362
 363         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 364                 erase_opts.offset + erase_opts.length - 1);
 365         if (doit) {
 366                 ret = nand_erase_opts(mtd, &erase_opts);
 367                 if (ret) {
 368                         printf("Failed to erase flash: %d\n", ret);
 369                         return ret;
 370                 }
 371         }
 372
 373         printf("Programming flash @ %08x..%08x from %p\n",
 374                 prg_start, prg_start + size - 1, addr);
 375         if (doit) {
 376                 actual = size;
 377                 ret = nand_write_skip_bad(mtd, prg_start, &actual, NULL,
 378                                         prg_length, addr, 0);
 379                 if (ret) {
 380                         printf("Failed to program flash: %d\n", ret);
 381                         return ret;
 382                 }
 383                 if (actual < size) {
 384                         printf("Could only write %u of %u bytes\n", actual, size);
 385                         return -EIO;
 386                 }
 387         }
 388         return 0;
 389 }
 390
 391 #ifdef CONFIG_ENV_IS_IN_NAND
 392 #ifndef CONFIG_ENV_OFFSET_REDUND
 393 #define TOTAL_ENV_SIZE CONFIG_ENV_RANGE
 394 #else
 395 #define TOTAL_ENV_SIZE (CONFIG_ENV_RANGE * 2)
 396 #endif
 397 #endif
 398
 399 int do_update(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 400 {
 401         int ret;
 402         const unsigned long fcb_start_block = 0, fcb_end_block = 0;
 403         int erase_size = mtd->erasesize;
 404         void *buf;
 405         char *load_addr;
 406         char *file_size;
 407         size_t size = 0;
 408         void *addr = NULL;
 409         struct mx28_fcb *fcb;
 410         unsigned long mtd_num_blocks = lldiv(mtd->size, mtd->erasesize);
 411 #ifdef CONFIG_ENV_IS_IN_NAND
 412         unsigned long env_start_block = CONFIG_ENV_OFFSET / mtd->erasesize;
 413         unsigned long env_end_block = env_start_block +
 414                 DIV_ROUND_UP(TOTAL_ENV_SIZE, mtd->erasesize) - 1;
 415 #endif
 416         int optind;
 417         int fw2_set = 0;
 418         unsigned long fw1_start_block = 0, fw1_end_block;
 419         unsigned long fw2_start_block = 0, fw2_end_block;
 420         unsigned long fw_num_blocks;
 421         int fw1_skip, fw2_skip;
 422         unsigned long extra_blocks = 0;
 423         u64 max_len1, max_len2;
 424         struct mtd_device *dev;
 425         struct part_info *part_info;
 426         struct part_info *redund_part_info;
 427         const char *uboot_part = "u-boot";
 428         const char *redund_part = NULL;
 429         u8 part_num;
 430         u8 redund_part_num;
 431
 432         ret = mtdparts_init();
 433         if (ret)
 434                 return ret;
 435
 436         doit = true;
 437         for (optind = 1; optind < argc; optind++) {
 438                 char *endp;
 439
 440                 if (strcmp(argv[optind], "-f") == 0) {
 441                         if (optind >= argc - 1) {
 442                                 printf("Option %s requires an argument\n",
 443                                         argv[optind]);
 444                                 return -EINVAL;
 445                         }
 446                         optind++;
 447                         fw1_start_block = simple_strtoul(argv[optind], &endp, 0);
 448                         if (*endp != '\0') {
 449                                 uboot_part = argv[optind];
 450                                 continue;
 451                         }
 452                         uboot_part = NULL;
 453                         if (fw1_start_block >= mtd_num_blocks) {
 454                                 printf("Block number %lu is out of range: 0..%lu\n",
 455                                         fw1_start_block, mtd_num_blocks - 1);
 456                                 return -EINVAL;
 457                         }
 458                 } else if (strcmp(argv[optind], "-r") == 0) {
 459                         fw2_set = 1;
 460                         if (optind < argc - 1 && argv[optind + 1][0] != '-') {
 461                                 optind++;
 462                                 fw2_start_block = simple_strtoul(argv[optind],
 463                                                                 &endp, 0);
 464                                 if (*endp != '\0') {
 465                                         redund_part = argv[optind];
 466                                         continue;
 467                                 }
 468                                 if (fw2_start_block >= mtd_num_blocks) {
 469                                         printf("Block number %lu is out of range: 0..%lu\n",
 470                                                 fw2_start_block,
 471                                                 mtd_num_blocks - 1);
 472                                         return -EINVAL;
 473                                 }
 474                         }
 475                 } else if (strcmp(argv[optind], "-e") == 0) {
 476                         if (optind >= argc - 1) {
 477                                 printf("Option %s requires an argument\n",
 478                                         argv[optind]);
 479                                 return -EINVAL;
 480                         }
 481                         optind++;
 482                         extra_blocks = simple_strtoul(argv[optind], NULL, 0);
 483                         if (extra_blocks >= mtd_num_blocks) {
 484                                 printf("Extra block count %lu is out of range: 0..%lu\n",
 485                                         extra_blocks,
 486                                         mtd_num_blocks - 1);
 487                                 return -EINVAL;
 488                         }
 489                 } else if (strcmp(argv[optind], "-n") == 0) {
 490                         doit = false;
 491                 } else if (argv[optind][0] == '-') {
 492                         printf("Unrecognized option %s\n", argv[optind]);
 493                         return -EINVAL;
 494                 } else {
 495                         break;
 496                 }
 497         }
 498
 499         load_addr = getenv("fileaddr");
 500         file_size = getenv("filesize");
 501
 502         if (argc - optind < 1 && load_addr == NULL) {
 503                 printf("Load address not specified\n");
 504                 return -EINVAL;
 505         }
 506         if (argc - optind < 2 && file_size == NULL) {
 507                 if (uboot_part) {
 508                         printf("WARNING: Image size not specified; overwriting whole '%s' partition\n",
 509                                 uboot_part);
 510                         printf("This will only work, if there are no bad blocks inside this partition!\n");
 511                 } else {
 512                         printf("ERROR: Image size must be specified\n");
 513                         return -EINVAL;
 514                 }
 515         }
 516         if (argc > optind) {
 517                 load_addr = NULL;
 518                 addr = (void *)simple_strtoul(argv[optind], NULL, 16);
 519                 optind++;
 520         }
 521         if (argc > optind) {
 522                 file_size = NULL;
 523                 size = simple_strtoul(argv[optind], NULL, 16);
 524                 optind++;
 525         }
 526         if (load_addr != NULL) {
 527                 addr = (void *)simple_strtoul(load_addr, NULL, 16);
 528                 printf("Using default load address %p\n", addr);
 529         }
 530         if (file_size != NULL) {
 531                 size = simple_strtoul(file_size, NULL, 16);
 532                 printf("Using default file size %08x\n", size);
 533         }
 534         if (size > 0)
 535                 fw_num_blocks = DIV_ROUND_UP(size, mtd->erasesize);
 536         else
 537                 fw_num_blocks = 0;
 538
 539         if (uboot_part) {
 540                 ret = find_dev_and_part(uboot_part, &dev, &part_num,
 541                                         &part_info);
 542                 if (ret) {
 543                         printf("Failed to find '%s' partition: %d\n",
 544                                 uboot_part, ret);
 545                         return ret;
 546                 }
 547                 fw1_start_block = lldiv(part_info->offset, mtd->erasesize);
 548                 max_len1 = part_info->size;
 549                 if (size == 0)
 550                         fw_num_blocks = lldiv(max_len1, mtd->erasesize);
 551         } else {
 552                 max_len1 = (u64)(fw_num_blocks + extra_blocks) * mtd->erasesize;
 553         }
 554
 555         if (redund_part) {
 556                 ret = find_dev_and_part(redund_part, &dev, &redund_part_num,
 557                                         &redund_part_info);
 558                 if (ret) {
 559                         printf("Failed to find '%s' partition: %d\n",
 560                                 redund_part, ret);
 561                         return ret;
 562                 }
 563                 fw2_start_block = lldiv(redund_part_info->offset, mtd->erasesize);
 564                 max_len2 = redund_part_info->size;
 565                 if (fw2_start_block == fcb_start_block) {
 566                         fw2_start_block++;
 567                         max_len2 -= mtd->erasesize;
 568                 }
 569                 if (size == 0)
 570                         fw_num_blocks = lldiv(max_len2, mtd->erasesize);
 571         } else if (fw2_set) {
 572                 max_len2 = (u64)(fw_num_blocks + extra_blocks) * mtd->erasesize;
 573         } else {
 574                 max_len2 = 0;
 575         }
 576
 577         fw1_skip = find_contig_space(fw1_start_block, fw_num_blocks,
 578                                 lldiv(max_len1, mtd->erasesize));
 579         if (fw1_skip < 0) {
 580                 printf("Could not find %lu contiguous good blocks for fw image in blocks %lu..%llu\n",
 581                         fw_num_blocks, fw1_start_block,
 582                         fw1_start_block + lldiv(max_len1, mtd->erasesize) - 1);
 583                 if (uboot_part) {
 584 #ifdef CONFIG_ENV_IS_IN_NAND
 585                         if (part_info->offset <= CONFIG_ENV_OFFSET + TOTAL_ENV_SIZE) {
 586                                 printf("Use a different partition\n");
 587                         } else {
 588                                 printf("Increase the size of the '%s' partition\n",
 589                                         uboot_part);
 590                         }
 591 #else
 592                         printf("Increase the size of the '%s' partition\n",
 593                                 uboot_part);
 594 #endif
 595                 } else {
 596                         printf("Increase the number of spare blocks to use with the '-e' option\n");
 597                 }
 598                 return -ENOSPC;
 599         }
 600         if (extra_blocks)
 601                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 602         else
 603                 fw1_end_block = fw1_start_block + fw_num_blocks + fw1_skip - 1;
 604
 605         if (fw2_set && fw2_start_block == 0)
 606                 fw2_start_block = fw1_end_block + 1;
 607         if (fw2_start_block > 0) {
 608                 fw2_skip = find_contig_space(fw2_start_block, fw_num_blocks,
 609                                         lldiv(max_len2, mtd->erasesize));
 610                 if (fw2_skip < 0) {
 611                         printf("Could not find %lu contiguous good blocks for redundant fw image in blocks %lu..%llu\n",
 612                                 fw_num_blocks, fw2_start_block,
 613                                 fw2_start_block + lldiv(max_len2, mtd->erasesize) - 1);
 614                         if (redund_part) {
 615                                 printf("Increase the size of the '%s' partition or use a different partition\n",
 616                                         redund_part);
 617                         } else {
 618                                 printf("Increase the number of spare blocks to use with the '-e' option\n");
 619                         }
 620                         return -ENOSPC;
 621                 }
 622         } else {
 623                 fw2_skip = 0;
 624         }
 625         if (extra_blocks)
 626                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 627         else
 628                 fw2_end_block = fw2_start_block + fw_num_blocks + fw2_skip - 1;
 629
 630 #ifdef CONFIG_ENV_IS_IN_NAND
 631         fail_if_overlap(fcb, env, "FCB", "Environment");
 632         fail_if_overlap(fw1, env, "FW1", "Environment");
 633 #endif
 634         fail_if_overlap(fcb, fw1, "FCB", "FW1");
 635         if (fw2_set) {
 636                 fail_if_overlap(fcb, fw2, "FCB", "FW2");
 637 #ifdef CONFIG_ENV_IS_IN_NAND
 638                 fail_if_overlap(fw2, env, "FW2", "Environment");
 639 #endif
 640                 fail_if_overlap(fw1, fw2, "FW1", "FW2");
 641         }
 642         fw1_start_block += fw1_skip;
 643         fw2_start_block += fw2_skip;
 644
 645         buf = memalign(SZ_128K, erase_size);
 646         if (buf == NULL) {
 647                 printf("Failed to allocate buffer\n");
 648                 return -ENOMEM;
 649         }
 650
 651         fcb = create_fcb(buf, fw1_start_block,
 652                         fw2_start_block, fw_num_blocks);
 653         if (IS_ERR(fcb)) {
 654                 printf("Failed to initialize FCB: %ld\n", PTR_ERR(fcb));
 655                 ret = PTR_ERR(fcb);
 656                 goto out;
 657         }
 658         encode_hamming_13_8(fcb, (void *)fcb + 512, 512);
 659
 660         ret = write_fcb(buf, fcb_start_block);
 661         if (ret) {
 662                 printf("Failed to write FCB to block %lu\n", fcb_start_block);
 663                 return ret;
 664         }
 665
 666         printf("Programming U-Boot image from %p to block %lu @ %08llx\n",
 667                 addr, fw1_start_block, (u64)fw1_start_block * mtd->erasesize);
 668         ret = tx28_prog_uboot(addr, fw1_start_block, fw1_skip, size,
 669                         max_len1);
 670
 671         if (ret || fw2_start_block == 0)
 672                 goto out;
 673
 674         printf("Programming redundant U-Boot image to block %lu @ %08llx\n",
 675                 fw2_start_block, (u64)fw2_start_block * mtd->erasesize);
 676         ret = tx28_prog_uboot(addr, fw2_start_block, fw2_skip, size,
 677                         max_len2);
 678 out:
 679         free(buf);
 680         return ret;
 681 }
 682
 683 U_BOOT_CMD(romupdate, 11, 0, do_update,
 684         "Creates an FCB data structure and writes an U-Boot image to flash",
 685         "[-f {<part>|block#}] [-r [{<part>|block#}]] [-e #] [<address>] [<length>]\n"
 686         "\t-f <part>\twrite bootloader image to partition <part>\n"
 687         "\t-f #\t\twrite bootloader image at block # (decimal)\n"
 688         "\t-r\t\twrite redundant bootloader image at next free block after first image\n"
 689         "\t-r <part>\twrite redundant bootloader image to partition <part>\n"
 690         "\t-r #\t\twrite redundant bootloader image at block # (decimal)\n"
 691         "\t-e #\t\tspecify number of redundant blocks per boot loader image\n"
 692         "\t\t\t(only valid if -f or -r specify a flash address rather than a partition name)\n"
 693         "\t-n\t\tshow what would be done without actually updating the flash\n"
 694         "\t<address>\tRAM address of bootloader image (default: ${fileaddr})\n"
 695         "\t<length>\tlength of bootloader image in RAM (default: ${filesize})"
 696         );