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/sys_proto.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 #define BF_VAL(v, bf)           (((v) & bf##_MASK) >> bf##_OFFSET)
  80 #define BF_SET_VAL(r, v, bf)    r = ((r) & ~bf##_MASK) | (((v) << bf##_OFFSET) & bf##_MASK)
  81
  82 static nand_info_t *mtd = &nand_info[0];
  83 static bool doit;
  84
  85 #define BIT(v,n)        (((v) >> (n)) & 0x1)
  86
  87 static u8 calculate_parity_13_8(u8 d)
  88 {
  89         u8 p = 0;
  90
  91         p |= (BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 3) ^ BIT(d, 2))             << 0;
  92         p |= (BIT(d, 7) ^ BIT(d, 5) ^ BIT(d, 4) ^ BIT(d, 2) ^ BIT(d, 1)) << 1;
  93         p |= (BIT(d, 7) ^ BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 1) ^ BIT(d, 0)) << 2;
  94         p |= (BIT(d, 7) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 0))             << 3;
  95         p |= (BIT(d, 6) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 2) ^ BIT(d, 1) ^ BIT(d, 0)) << 4;
  96         return p;
  97 }
  98
  99 static void encode_hamming_13_8(void *_src, void *_ecc, size_t size)
 100 {
 101         int i;
 102         u8 *src = _src;
 103         u8 *ecc = _ecc;
 104
 105         for (i = 0; i < size; i++)
 106                 ecc[i] = calculate_parity_13_8(src[i]);
 107 }
 108
 109 static struct bch_regs bch_save;
 110 static struct bch_regs *bch_base = (void *)BCH_BASE_ADDRESS;
 111
 112 /*
 113  * Reprogram BCH engine for 40bit ECC on chunks of 128 byte
 114  * and 32 byte of metadata as required by the i.MX6UL ROM code.
 115  */
 116 static void tx6_init_bch(void)
 117 {
 118         u32 fl0 = readl(&bch_base->hw_bch_flash0layout0);
 119         u32 fl1 = readl(&bch_base->hw_bch_flash0layout1);
 120
 121         bch_save.hw_bch_flash0layout0 = fl0;
 122         bch_save.hw_bch_flash0layout1 = fl1;
 123
 124         BF_SET_VAL(fl0, 32, BCH_FLASHLAYOUT0_META_SIZE);
 125         BF_SET_VAL(fl0, 7, BCH_FLASHLAYOUT0_NBLOCKS);
 126
 127         BF_SET_VAL(fl0, 0x14, BCH_FLASHLAYOUT0_ECC0);
 128         BF_SET_VAL(fl0, 128 / 4, BCH_FLASHLAYOUT0_DATA0_SIZE);
 129
 130         BF_SET_VAL(fl1, 0x14, BCH_FLASHLAYOUT1_ECCN);
 131         BF_SET_VAL(fl1, 128 / 4, BCH_FLASHLAYOUT1_DATAN_SIZE);
 132
 133         writel(fl0, &bch_base->hw_bch_flash0layout0);
 134         writel(fl1, &bch_base->hw_bch_flash0layout1);
 135 }
 136
 137 static void tx6_restore_bch(void)
 138 {
 139         writel(bch_save.hw_bch_flash0layout0, &bch_base->hw_bch_flash0layout0);
 140         writel(bch_save.hw_bch_flash0layout1, &bch_base->hw_bch_flash0layout1);
 141 }
 142
 143 static u32 calc_chksum(void *buf, size_t size)
 144 {
 145         u32 chksum = 0;
 146         u8 *bp = buf;
 147         size_t i;
 148
 149         for (i = 0; i < size; i++) {
 150                 chksum += bp[i];
 151         }
 152         return ~chksum;
 153 }
 154
 155 /*
 156  * return number of blocks to skip for a contiguous partition
 157  * of given # blocks
 158  */
 159 static int find_contig_space(int block, int num_blocks, int max_blocks)
 160 {
 161         int skip = 0;
 162         int found = 0;
 163         int last = block + max_blocks;
 164
 165         debug("Searching %u contiguous blocks from %d..%d\n",
 166                 num_blocks, block, block + max_blocks - 1);
 167         for (; block < last; block++) {
 168                 if (nand_block_isbad(mtd, block * mtd->erasesize)) {
 169                         skip += found + 1;
 170                         found = 0;
 171                         debug("Skipping %u blocks to %u\n",
 172                                 skip, block + 1);
 173                 } else {
 174                         found++;
 175                         if (found >= num_blocks) {
 176                                 debug("Found %u good blocks from %d..%d\n",
 177                                         found, block - found + 1, block);
 178                                 return skip;
 179                         }
 180                 }
 181         }
 182         return -ENOSPC;
 183 }
 184
 185 #define offset_of(p, m)         ((void *)&(p)->m - (void *)(p))
 186 #define pr_fcb_val(p, n)        debug("%-24s[%02x]=%08x(%d)\n", #n, offset_of(p, n), (p)->n, (p)->n)
 187
 188 static struct mx6_fcb *create_fcb(void *buf, int fw1_start_block,
 189                                 int fw2_start_block, int fw_num_blocks)
 190 {
 191         struct gpmi_regs *gpmi_base = (void *)GPMI_BASE_ADDRESS;
 192         u32 fl0, fl1;
 193         u32 t0;
 194         struct mx6_fcb *fcb;
 195         int fcb_offs;
 196
 197         if (gpmi_base == NULL || bch_base == NULL) {
 198                 return ERR_PTR(-ENOMEM);
 199         }
 200
 201         fl0 = readl(&bch_base->hw_bch_flash0layout0);
 202         fl1 = readl(&bch_base->hw_bch_flash0layout1);
 203         t0 = readl(&gpmi_base->hw_gpmi_timing0);
 204
 205         if (!is_cpu_type(MXC_CPU_MX6UL)) {
 206                 int metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 207
 208                 fcb = buf + ALIGN(metadata_size, 4);
 209                 fcb_offs = (void *)fcb - buf;
 210
 211                 memset(buf, 0xff, fcb_offs);
 212         } else {
 213                 fcb = buf;
 214                 fcb_offs = 0;
 215         }
 216
 217         memset(fcb, 0, mtd->erasesize - fcb_offs);
 218
 219         strncpy((char *)&fcb->fingerprint, "FCB ", 4);
 220         fcb->version = cpu_to_be32(1);
 221
 222         fcb->disbb_search = 0;
 223         fcb->disbbm = 1;
 224
 225         /* ROM code assumes GPMI clock of 25 MHz */
 226         fcb->timing.data_setup = BF_VAL(t0, GPMI_TIMING0_DATA_SETUP) * 40;
 227         fcb->timing.data_hold = BF_VAL(t0, GPMI_TIMING0_DATA_HOLD) * 40;
 228         fcb->timing.address_setup = BF_VAL(t0, GPMI_TIMING0_ADDRESS_SETUP) * 40;
 229
 230         fcb->page_data_size = mtd->writesize;
 231         fcb->total_page_size = mtd->writesize + mtd->oobsize;
 232         fcb->sectors_per_block = mtd->erasesize / mtd->writesize;
 233
 234         fcb->ecc_block0_type = BF_VAL(fl0, BCH_FLASHLAYOUT0_ECC0);
 235         fcb->ecc_block0_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_DATA0_SIZE) * 4;
 236         fcb->ecc_blockn_type = BF_VAL(fl1, BCH_FLASHLAYOUT1_ECCN);
 237         fcb->ecc_blockn_size = BF_VAL(fl1, BCH_FLASHLAYOUT1_DATAN_SIZE) * 4;
 238
 239         pr_fcb_val(fcb, ecc_block0_type);
 240         pr_fcb_val(fcb, ecc_blockn_type);
 241         pr_fcb_val(fcb, ecc_block0_size);
 242         pr_fcb_val(fcb, ecc_blockn_size);
 243
 244         fcb->metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
 245         fcb->ecc_blocks_per_page = BF_VAL(fl0, BCH_FLASHLAYOUT0_NBLOCKS);
 246         fcb->bch_mode = readl(&bch_base->hw_bch_mode);
 247         fcb->bch_type = 0; /* BCH20 */
 248
 249         fcb->fw1_start_page = fw1_start_block * fcb->sectors_per_block;
 250         fcb->fw1_sectors = fw_num_blocks * fcb->sectors_per_block;
 251         pr_fcb_val(fcb, fw1_start_page);
 252         pr_fcb_val(fcb, fw1_sectors);
 253
 254         if (fw2_start_block != 0 &&
 255                 fw2_start_block < lldiv(mtd->size, mtd->erasesize)) {
 256                 fcb->fw2_start_page = fw2_start_block * fcb->sectors_per_block;
 257                 fcb->fw2_sectors = fcb->fw1_sectors;
 258                 pr_fcb_val(fcb, fw2_start_page);
 259                 pr_fcb_val(fcb, fw2_sectors);
 260         }
 261
 262         fcb->dbbt_search_area = 0;
 263
 264         fcb->checksum = calc_chksum(&fcb->fingerprint, 512 - 4);
 265         return fcb;
 266 }
 267
 268 static int find_fcb(void *ref, int page)
 269 {
 270         int ret = 0;
 271         struct nand_chip *chip = mtd->priv;
 272         void *buf = malloc(mtd->erasesize);
 273
 274         if (buf == NULL) {
 275                 return -ENOMEM;
 276         }
 277         chip->select_chip(mtd, 0);
 278         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
 279         ret = chip->ecc.read_page_raw(mtd, chip, buf, 1, page);
 280         if (ret) {
 281                 printf("Failed to read FCB from page %u: %d\n", page, ret);
 282                 goto out;
 283         }
 284         if (memcmp(buf, ref, mtd->writesize) == 0) {
 285                 debug("Found FCB in page %u (%08x)\n",
 286                         page, page * mtd->writesize);
 287                 ret = 1;
 288         }
 289 out:
 290         chip->select_chip(mtd, -1);
 291         free(buf);
 292         return ret;
 293 }
 294
 295 static int write_fcb(void *buf, int block)
 296 {
 297         int ret;
 298         struct nand_chip *chip = mtd->priv;
 299         int page = block * mtd->erasesize / mtd->writesize;
 300
 301         ret = find_fcb(buf, page);
 302         if (ret > 0) {
 303                 printf("FCB at block %d is up to date\n", block);
 304                 return 0;
 305         }
 306
 307         if (doit) {
 308                 ret = nand_erase(mtd, block * mtd->erasesize, mtd->erasesize);
 309                 if (ret) {
 310                         printf("Failed to erase FCB block %u\n", block);
 311                         return ret;
 312                 }
 313         }
 314
 315         printf("Writing FCB to block %d @ %08llx\n", block,
 316                 (u64)block * mtd->erasesize);
 317         if (doit) {
 318                 if (is_cpu_type(MXC_CPU_MX6UL)) {
 319                         size_t len = mtd->writesize;
 320
 321                         tx6_init_bch();
 322                         printf("writing block %u from buffer %p\n", block, buf);
 323                         ret = nand_write(mtd, block * mtd->erasesize, &len, buf);
 324                         tx6_restore_bch();
 325                 } else {
 326                         chip->select_chip(mtd, 0);
 327                         ret = chip->write_page(mtd, chip, 0, mtd->writesize,
 328                                         buf, 1, page, 0, 1);
 329                 }
 330                 if (ret) {
 331                         printf("Failed to write FCB to block %u: %d\n", block, ret);
 332                 }
 333                 chip->select_chip(mtd, -1);
 334         }
 335         return ret;
 336 }
 337
 338 #define chk_overlap(a,b)                                \
 339         ((a##_start_block <= b##_end_block &&           \
 340                 a##_end_block >= b##_start_block) ||    \
 341         (b##_start_block <= a##_end_block &&            \
 342                 b##_end_block >= a##_start_block))
 343
 344 #define fail_if_overlap(a,b,m1,m2) do {                                 \
 345         if (!doit)                                                      \
 346                 printf("check: %s[%lu..%lu] <> %s[%lu..%lu]\n",         \
 347                         m1, a##_start_block, a##_end_block,             \
 348                         m2, b##_start_block, b##_end_block);            \
 349         if (a##_end_block < a##_start_block)                            \
 350                 printf("Invalid start/end block # for %s\n", m1);       \
 351         if (b##_end_block < b##_start_block)                            \
 352                 printf("Invalid start/end block # for %s\n", m2);       \
 353         if (chk_overlap(a, b)) {                                        \
 354                 printf("%s blocks %lu..%lu overlap %s in blocks %lu..%lu!\n", \
 355                         m1, a##_start_block, a##_end_block,             \
 356                         m2, b##_start_block, b##_end_block);            \
 357                 return -EINVAL;                                         \
 358         }                                                               \
 359 } while (0)
 360
 361 static int tx6_prog_uboot(void *addr, int start_block, int skip,
 362                         size_t size, size_t max_len)
 363 {
 364         int ret;
 365         nand_erase_options_t erase_opts = { 0, };
 366         size_t actual;
 367         size_t prg_length = max_len - skip * mtd->erasesize;
 368         int prg_start = (start_block + skip) * mtd->erasesize;
 369
 370         erase_opts.offset = start_block * mtd->erasesize;
 371         erase_opts.length = max_len;
 372         erase_opts.quiet = 1;
 373
 374         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
 375                 erase_opts.offset + erase_opts.length - 1);
 376         if (doit) {
 377                 ret = nand_erase_opts(mtd, &erase_opts);
 378                 if (ret) {
 379                         printf("Failed to erase flash: %d\n", ret);
 380                         return ret;
 381                 }
 382         }
 383
 384         printf("Programming flash @ %08x..%08x from %p\n",
 385                 prg_start, prg_start + size - 1, addr);
 386         if (doit) {
 387                 actual = size;
 388                 ret = nand_write_skip_bad(mtd, prg_start, &actual, NULL,
 389                                         prg_length, addr, 0);
 390                 if (ret) {
 391                         printf("Failed to program flash: %d\n", ret);
 392                         return ret;
 393                 }
 394                 if (actual < size) {
 395                         printf("Could only write %u of %u bytes\n", actual, size);
 396                         return -EIO;
 397                 }
 398         }
 399         return 0;
 400 }
 401
 402 #ifdef CONFIG_ENV_IS_IN_NAND
 403 #ifndef CONFIG_ENV_OFFSET_REDUND
 404 #define TOTAL_ENV_SIZE CONFIG_ENV_RANGE
 405 #else
 406 #define TOTAL_ENV_SIZE (CONFIG_ENV_RANGE * 2)
 407 #endif
 408 #endif
 409
 410 int do_update(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 411 {
 412         int ret;
 413         const unsigned long fcb_start_block = 0, fcb_end_block = 0;
 414         int erase_size = mtd->erasesize;
 415         void *buf;
 416         char *load_addr;
 417         char *file_size;
 418         size_t size = 0;
 419         void *addr = NULL;
 420         struct mx6_fcb *fcb;
 421         unsigned long mtd_num_blocks = lldiv(mtd->size, mtd->erasesize);
 422 #ifdef CONFIG_ENV_IS_IN_NAND
 423         unsigned long env_start_block = CONFIG_ENV_OFFSET / mtd->erasesize;
 424         unsigned long env_end_block = env_start_block +
 425                 DIV_ROUND_UP(TOTAL_ENV_SIZE, mtd->erasesize) - 1;
 426 #endif
 427         int optind;
 428         int fw2_set = 0;
 429         unsigned long fw1_start_block = 0, fw1_end_block;
 430         unsigned long fw2_start_block = 0, fw2_end_block;
 431         unsigned long fw_num_blocks;
 432         int fw1_skip, fw2_skip;
 433         unsigned long extra_blocks = 0;
 434         u64 max_len1, max_len2;
 435         struct mtd_device *dev;
 436         struct part_info *part_info;
 437         struct part_info *redund_part_info;
 438         const char *uboot_part = "u-boot";
 439         const char *redund_part = NULL;
 440         u8 part_num;
 441         u8 redund_part_num;
 442
 443         ret = mtdparts_init();
 444         if (ret)
 445                 return ret;
 446
 447         doit = true;
 448         for (optind = 1; optind < argc; optind++) {
 449                 char *endp;
 450
 451                 if (strcmp(argv[optind], "-f") == 0) {
 452                         if (optind >= argc - 1) {
 453                                 printf("Option %s requires an argument\n",
 454                                         argv[optind]);
 455                                 return -EINVAL;
 456                         }
 457                         optind++;
 458                         fw1_start_block = simple_strtoul(argv[optind], &endp, 0);
 459                         if (*endp != '\0') {
 460                                 uboot_part = argv[optind];
 461                                 continue;
 462                         }
 463                         uboot_part = NULL;
 464                         if (fw1_start_block >= mtd_num_blocks) {
 465                                 printf("Block number %lu is out of range: 0..%lu\n",
 466                                         fw1_start_block, mtd_num_blocks - 1);
 467                                 return -EINVAL;
 468                         }
 469                 } else if (strcmp(argv[optind], "-r") == 0) {
 470                         fw2_set = 1;
 471                         if (optind < argc - 1 && argv[optind + 1][0] != '-') {
 472                                 optind++;
 473                                 fw2_start_block = simple_strtoul(argv[optind],
 474                                                                 &endp, 0);
 475                                 if (*endp != '\0') {
 476                                         redund_part = argv[optind];
 477                                         continue;
 478                                 }
 479                                 if (fw2_start_block >= mtd_num_blocks) {
 480                                         printf("Block number %lu is out of range: 0..%lu\n",
 481                                                 fw2_start_block,
 482                                                 mtd_num_blocks - 1);
 483                                         return -EINVAL;
 484                                 }
 485                         }
 486                 } else if (strcmp(argv[optind], "-e") == 0) {
 487                         if (optind >= argc - 1) {
 488                                 printf("Option %s requires an argument\n",
 489                                         argv[optind]);
 490                                 return -EINVAL;
 491                         }
 492                         optind++;
 493                         extra_blocks = simple_strtoul(argv[optind], NULL, 0);
 494                         if (extra_blocks >= mtd_num_blocks) {
 495                                 printf("Extra block count %lu is out of range: 0..%lu\n",
 496                                         extra_blocks,
 497                                         mtd_num_blocks - 1);
 498                                 return -EINVAL;
 499                         }
 500                 } else if (strcmp(argv[optind], "-n") == 0) {
 501                         doit = false;
 502                 } else if (argv[optind][0] == '-') {
 503                         printf("Unrecognized option %s\n", argv[optind]);
 504                         return -EINVAL;
 505                 } else {
 506                         break;
 507                 }
 508         }
 509
 510         load_addr = getenv("fileaddr");
 511         file_size = getenv("filesize");
 512
 513         if (argc - optind < 1 && load_addr == NULL) {
 514                 printf("Load address not specified\n");
 515                 return -EINVAL;
 516         }
 517         if (argc - optind < 2 && file_size == NULL) {
 518                 if (uboot_part) {
 519                         printf("WARNING: Image size not specified; overwriting whole '%s' partition\n",
 520                                 uboot_part);
 521                         printf("This will only work, if there are no bad blocks inside this partition!\n");
 522                 } else {
 523                         printf("ERROR: Image size must be specified\n");
 524                         return -EINVAL;
 525                 }
 526         }
 527         if (argc > optind) {
 528                 load_addr = NULL;
 529                 addr = (void *)simple_strtoul(argv[optind], NULL, 16);
 530                 optind++;
 531         }
 532         if (argc > optind) {
 533                 file_size = NULL;
 534                 size = simple_strtoul(argv[optind], NULL, 16);
 535                 optind++;
 536         }
 537         if (load_addr != NULL) {
 538                 addr = (void *)simple_strtoul(load_addr, NULL, 16);
 539                 printf("Using default load address %p\n", addr);
 540         }
 541         if (file_size != NULL) {
 542                 size = simple_strtoul(file_size, NULL, 16);
 543                 printf("Using default file size %08x\n", size);
 544         }
 545         if (size > 0)
 546                 fw_num_blocks = DIV_ROUND_UP(size, mtd->erasesize);
 547         else
 548                 fw_num_blocks = 0;
 549
 550         if (uboot_part) {
 551                 ret = find_dev_and_part(uboot_part, &dev, &part_num,
 552                                         &part_info);
 553                 if (ret) {
 554                         printf("Failed to find '%s' partition: %d\n",
 555                                 uboot_part, ret);
 556                         return ret;
 557                 }
 558                 fw1_start_block = lldiv(part_info->offset, mtd->erasesize);
 559                 max_len1 = part_info->size;
 560                 if (size == 0)
 561                         fw_num_blocks = lldiv(max_len1, mtd->erasesize);
 562         } else {
 563                 max_len1 = (u64)(fw_num_blocks + extra_blocks) * mtd->erasesize;
 564         }
 565
 566         if (redund_part) {
 567                 ret = find_dev_and_part(redund_part, &dev, &redund_part_num,
 568                                         &redund_part_info);
 569                 if (ret) {
 570                         printf("Failed to find '%s' partition: %d\n",
 571                                 redund_part, ret);
 572                         return ret;
 573                 }
 574                 fw2_start_block = lldiv(redund_part_info->offset, mtd->erasesize);
 575                 max_len2 = redund_part_info->size;
 576                 if (fw2_start_block == fcb_start_block) {
 577                         fw2_start_block++;
 578                         max_len2 -= mtd->erasesize;
 579                 }
 580                 if (size == 0)
 581                         fw_num_blocks = lldiv(max_len2, mtd->erasesize);
 582         } else if (fw2_set) {
 583                 max_len2 = (u64)(fw_num_blocks + extra_blocks) * mtd->erasesize;
 584         } else {
 585                 max_len2 = 0;
 586         }
 587
 588         fw1_skip = find_contig_space(fw1_start_block, fw_num_blocks,
 589                                 lldiv(max_len1, mtd->erasesize));
 590         if (fw1_skip < 0) {
 591                 printf("Could not find %lu contiguous good blocks for fw image in blocks %lu..%llu\n",
 592                         fw_num_blocks, fw1_start_block,
 593                         fw1_start_block + lldiv(max_len1, mtd->erasesize) - 1);
 594                 if (uboot_part) {
 595 #ifdef CONFIG_ENV_IS_IN_NAND
 596                         if (part_info->offset <= CONFIG_ENV_OFFSET + TOTAL_ENV_SIZE) {
 597                                 printf("Use a different partition\n");
 598                         } else {
 599                                 printf("Increase the size of the '%s' partition\n",
 600                                         uboot_part);
 601                         }
 602 #else
 603                         printf("Increase the size of the '%s' partition\n",
 604                                 uboot_part);
 605 #endif
 606                 } else {
 607                         printf("Increase the number of spare blocks to use with the '-e' option\n");
 608                 }
 609                 return -ENOSPC;
 610         }
 611         if (extra_blocks)
 612                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
 613         else
 614                 fw1_end_block = fw1_start_block + fw_num_blocks + fw1_skip - 1;
 615
 616         if (fw2_set && fw2_start_block == 0)
 617                 fw2_start_block = fw1_end_block + 1;
 618         if (fw2_start_block > 0) {
 619                 fw2_skip = find_contig_space(fw2_start_block, fw_num_blocks,
 620                                         lldiv(max_len2, mtd->erasesize));
 621                 if (fw2_skip < 0) {
 622                         printf("Could not find %lu contiguous good blocks for redundant fw image in blocks %lu..%llu\n",
 623                                 fw_num_blocks, fw2_start_block,
 624                                 fw2_start_block + lldiv(max_len2, mtd->erasesize) - 1);
 625                         if (redund_part) {
 626                                 printf("Increase the size of the '%s' partition or use a different partition\n",
 627                                         redund_part);
 628                         } else {
 629                                 printf("Increase the number of spare blocks to use with the '-e' option\n");
 630                         }
 631                         return -ENOSPC;
 632                 }
 633         } else {
 634                 fw2_skip = 0;
 635         }
 636         if (extra_blocks)
 637                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
 638         else
 639                 fw2_end_block = fw2_start_block + fw_num_blocks + fw2_skip - 1;
 640
 641 #ifdef CONFIG_ENV_IS_IN_NAND
 642         fail_if_overlap(fcb, env, "FCB", "Environment");
 643         fail_if_overlap(fw1, env, "FW1", "Environment");
 644 #endif
 645         fail_if_overlap(fcb, fw1, "FCB", "FW1");
 646         if (fw2_set) {
 647                 fail_if_overlap(fcb, fw2, "FCB", "FW2");
 648 #ifdef CONFIG_ENV_IS_IN_NAND
 649                 fail_if_overlap(fw2, env, "FW2", "Environment");
 650 #endif
 651                 fail_if_overlap(fw1, fw2, "FW1", "FW2");
 652         }
 653         fw1_start_block += fw1_skip;
 654         fw2_start_block += fw2_skip;
 655
 656         buf = memalign(SZ_128K, erase_size);
 657         if (buf == NULL) {
 658                 printf("Failed to allocate buffer\n");
 659                 return -ENOMEM;
 660         }
 661
 662         fcb = create_fcb(buf, fw1_start_block,
 663                         fw2_start_block, fw_num_blocks);
 664         if (IS_ERR(fcb)) {
 665                 printf("Failed to initialize FCB: %ld\n", PTR_ERR(fcb));
 666                 ret = PTR_ERR(fcb);
 667                 goto out;
 668         }
 669         if (!is_cpu_type(MXC_CPU_MX6UL))
 670                 encode_hamming_13_8(fcb, (void *)fcb + 512, 512);
 671
 672         ret = write_fcb(buf, fcb_start_block);
 673         if (ret) {
 674                 printf("Failed to write FCB to block %lu\n", fcb_start_block);
 675                 return ret;
 676         }
 677
 678         printf("Programming U-Boot image from %p to block %lu @ %08llx\n",
 679                 buf, fw1_start_block, (u64)fw1_start_block * mtd->erasesize);
 680         ret = tx6_prog_uboot(addr, fw1_start_block, fw1_skip, size,
 681                         max_len1);
 682
 683         if (ret || fw2_start_block == 0)
 684                 goto out;
 685
 686         printf("Programming redundant U-Boot image to block %lu @ %08llx\n",
 687                 fw2_start_block, (u64)fw2_start_block * mtd->erasesize);
 688         ret = tx6_prog_uboot(addr, fw2_start_block, fw2_skip, size,
 689                         max_len2);
 690 out:
 691         free(buf);
 692         return ret;
 693 }
 694
 695 U_BOOT_CMD(romupdate, 11, 0, do_update,
 696         "Creates an FCB data structure and writes an U-Boot image to flash",
 697         "[-f {<part>|block#}] [-r [{<part>|block#}]] [-e #] [<address>] [<length>]\n"
 698         "\t-f <part>\twrite bootloader image to partition <part>\n"
 699         "\t-f #\t\twrite bootloader image at block # (decimal)\n"
 700         "\t-r\t\twrite redundant bootloader image at next free block after first image\n"
 701         "\t-r <part>\twrite redundant bootloader image to partition <part>\n"
 702         "\t-r #\t\twrite redundant bootloader image at block # (decimal)\n"
 703         "\t-e #\t\tspecify number of redundant blocks per boot loader image\n"
 704         "\t\t\t(only valid if -f or -r specify a flash address rather than a partition name)\n"
 705         "\t-n\t\tshow what would be done without actually updating the flash\n"
 706         "\t<address>\tRAM address of bootloader image (default: ${fileaddr})\n"
 707         "\t<length>\tlength of bootloader image in RAM (default: ${filesize})"
 708         );