tools/mxsboot.c

   1 /*
   2  * Freescale i.MX28 image generator
   3  *
   4  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
   5  * on behalf of DENX Software Engineering GmbH
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <fcntl.h>
  11 #include <sys/stat.h>
  12 #include <sys/types.h>
  13 #include <unistd.h>
  14
  15 #include "compiler.h"
  16
  17 /* Taken from <linux/kernel.h> */
  18 #define __round_mask(x, y) ((__typeof__(x))((y)-1))
  19 #define round_down(x, y) ((x) & ~__round_mask(x, y))
  20
  21 /*
  22  * Default BCB layout.
  23  *
  24  * TWEAK this if you have blown any OCOTP fuses.
  25  */
  26 #define STRIDE_PAGES            64
  27 #define STRIDE_COUNT            4
  28
  29 /*
  30  * Layout for 256Mb big NAND with 2048b page size, 64b OOB size and
  31  * 128kb erase size.
  32  *
  33  * TWEAK this if you have different kind of NAND chip.
  34  */
  35 static uint32_t nand_writesize = 2048;
  36 static uint32_t nand_oobsize = 64;
  37 static uint32_t nand_erasesize = 128 * 1024;
  38
  39 /*
  40  * Sector on which the SigmaTel boot partition (0x53) starts.
  41  */
  42 static uint32_t sd_sector = 2048;
  43
  44 /*
  45  * Each of the U-Boot bootstreams is at maximum 1MB big.
  46  *
  47  * TWEAK this if, for some wild reason, you need to boot bigger image.
  48  */
  49 #define MAX_BOOTSTREAM_SIZE     (1 * 1024 * 1024)
  50
  51 /* i.MX28 NAND controller-specific constants. DO NOT TWEAK! */
  52 #define MXS_NAND_DMA_DESCRIPTOR_COUNT           4
  53 #define MXS_NAND_CHUNK_DATA_CHUNK_SIZE          512
  54 #define MXS_NAND_METADATA_SIZE                  10
  55 #define MXS_NAND_BITS_PER_ECC_LEVEL             13
  56 #define MXS_NAND_COMMAND_BUFFER_SIZE            32
  57
  58 struct mx28_nand_fcb {
  59         uint32_t                checksum;
  60         uint32_t                fingerprint;
  61         uint32_t                version;
  62         struct {
  63                 uint8_t                 data_setup;
  64                 uint8_t                 data_hold;
  65                 uint8_t                 address_setup;
  66                 uint8_t                 dsample_time;
  67                 uint8_t                 nand_timing_state;
  68                 uint8_t                 rea;
  69                 uint8_t                 rloh;
  70                 uint8_t                 rhoh;
  71         }                       timing;
  72         uint32_t                page_data_size;
  73         uint32_t                total_page_size;
  74         uint32_t                sectors_per_block;
  75         uint32_t                number_of_nands;                /* Ignored */
  76         uint32_t                total_internal_die;             /* Ignored */
  77         uint32_t                cell_type;                      /* Ignored */
  78         uint32_t                ecc_block_n_ecc_type;
  79         uint32_t                ecc_block_0_size;
  80         uint32_t                ecc_block_n_size;
  81         uint32_t                ecc_block_0_ecc_type;
  82         uint32_t                metadata_bytes;
  83         uint32_t                num_ecc_blocks_per_page;
  84         uint32_t                ecc_block_n_ecc_level_sdk;      /* Ignored */
  85         uint32_t                ecc_block_0_size_sdk;           /* Ignored */
  86         uint32_t                ecc_block_n_size_sdk;           /* Ignored */
  87         uint32_t                ecc_block_0_ecc_level_sdk;      /* Ignored */
  88         uint32_t                num_ecc_blocks_per_page_sdk;    /* Ignored */
  89         uint32_t                metadata_bytes_sdk;             /* Ignored */
  90         uint32_t                erase_threshold;
  91         uint32_t                boot_patch;
  92         uint32_t                patch_sectors;
  93         uint32_t                firmware1_starting_sector;
  94         uint32_t                firmware2_starting_sector;
  95         uint32_t                sectors_in_firmware1;
  96         uint32_t                sectors_in_firmware2;
  97         uint32_t                dbbt_search_area_start_address;
  98         uint32_t                badblock_marker_byte;
  99         uint32_t                badblock_marker_start_bit;
 100         uint32_t                bb_marker_physical_offset;
 101 };
 102
 103 struct mx28_nand_dbbt {
 104         uint32_t                checksum;
 105         uint32_t                fingerprint;
 106         uint32_t                version;
 107         uint32_t                number_bb;
 108         uint32_t                number_2k_pages_bb;
 109 };
 110
 111 struct mx28_nand_bbt {
 112         uint32_t                nand;
 113         uint32_t                number_bb;
 114         uint32_t                badblock[510];
 115 };
 116
 117 struct mx28_sd_drive_info {
 118         uint32_t                chip_num;
 119         uint32_t                drive_type;
 120         uint32_t                tag;
 121         uint32_t                first_sector_number;
 122         uint32_t                sector_count;
 123 };
 124
 125 struct mx28_sd_config_block {
 126         uint32_t                        signature;
 127         uint32_t                        primary_boot_tag;
 128         uint32_t                        secondary_boot_tag;
 129         uint32_t                        num_copies;
 130         struct mx28_sd_drive_info       drv_info[1];
 131 };
 132
 133 static inline uint32_t mx28_nand_ecc_chunk_cnt(uint32_t page_data_size)
 134 {
 135         return page_data_size / MXS_NAND_CHUNK_DATA_CHUNK_SIZE;
 136 }
 137
 138 static inline uint32_t mx28_nand_ecc_size_in_bits(uint32_t ecc_strength)
 139 {
 140         return ecc_strength * MXS_NAND_BITS_PER_ECC_LEVEL;
 141 }
 142
 143 static inline uint32_t mx28_nand_get_ecc_strength(uint32_t page_data_size,
 144                                                 uint32_t page_oob_size)
 145 {
 146         int ecc_strength;
 147
 148         /*
 149          * Determine the ECC layout with the formula:
 150          *      ECC bits per chunk = (total page spare data bits) /
 151          *              (bits per ECC level) / (chunks per page)
 152          * where:
 153          *      total page spare data bits =
 154          *              (page oob size - meta data size) * (bits per byte)
 155          */
 156         ecc_strength = ((page_oob_size - MXS_NAND_METADATA_SIZE) * 8)
 157                         / (MXS_NAND_BITS_PER_ECC_LEVEL *
 158                                 mx28_nand_ecc_chunk_cnt(page_data_size));
 159
 160         return round_down(ecc_strength, 2);
 161 }
 162
 163 static inline uint32_t mx28_nand_get_mark_offset(uint32_t page_data_size,
 164                                                 uint32_t ecc_strength)
 165 {
 166         uint32_t chunk_data_size_in_bits;
 167         uint32_t chunk_ecc_size_in_bits;
 168         uint32_t chunk_total_size_in_bits;
 169         uint32_t block_mark_chunk_number;
 170         uint32_t block_mark_chunk_bit_offset;
 171         uint32_t block_mark_bit_offset;
 172
 173         chunk_data_size_in_bits = MXS_NAND_CHUNK_DATA_CHUNK_SIZE * 8;
 174         chunk_ecc_size_in_bits  = mx28_nand_ecc_size_in_bits(ecc_strength);
 175
 176         chunk_total_size_in_bits =
 177                         chunk_data_size_in_bits + chunk_ecc_size_in_bits;
 178
 179         /* Compute the bit offset of the block mark within the physical page. */
 180         block_mark_bit_offset = page_data_size * 8;
 181
 182         /* Subtract the metadata bits. */
 183         block_mark_bit_offset -= MXS_NAND_METADATA_SIZE * 8;
 184
 185         /*
 186          * Compute the chunk number (starting at zero) in which the block mark
 187          * appears.
 188          */
 189         block_mark_chunk_number =
 190                         block_mark_bit_offset / chunk_total_size_in_bits;
 191
 192         /*
 193          * Compute the bit offset of the block mark within its chunk, and
 194          * validate it.
 195          */
 196         block_mark_chunk_bit_offset = block_mark_bit_offset -
 197                         (block_mark_chunk_number * chunk_total_size_in_bits);
 198
 199         if (block_mark_chunk_bit_offset > chunk_data_size_in_bits)
 200                 return 1;
 201
 202         /*
 203          * Now that we know the chunk number in which the block mark appears,
 204          * we can subtract all the ECC bits that appear before it.
 205          */
 206         block_mark_bit_offset -=
 207                 block_mark_chunk_number * chunk_ecc_size_in_bits;
 208
 209         return block_mark_bit_offset;
 210 }
 211
 212 static inline uint32_t mx28_nand_mark_byte_offset(void)
 213 {
 214         uint32_t ecc_strength;
 215         ecc_strength = mx28_nand_get_ecc_strength(nand_writesize, nand_oobsize);
 216         return mx28_nand_get_mark_offset(nand_writesize, ecc_strength) >> 3;
 217 }
 218
 219 static inline uint32_t mx28_nand_mark_bit_offset(void)
 220 {
 221         uint32_t ecc_strength;
 222         ecc_strength = mx28_nand_get_ecc_strength(nand_writesize, nand_oobsize);
 223         return mx28_nand_get_mark_offset(nand_writesize, ecc_strength) & 0x7;
 224 }
 225
 226 static uint32_t mx28_nand_block_csum(uint8_t *block, uint32_t size)
 227 {
 228         uint32_t csum = 0;
 229         int i;
 230
 231         for (i = 0; i < size; i++)
 232                 csum += block[i];
 233
 234         return csum ^ 0xffffffff;
 235 }
 236
 237 static struct mx28_nand_fcb *mx28_nand_get_fcb(uint32_t size)
 238 {
 239         struct mx28_nand_fcb *fcb;
 240         uint32_t bcb_size_bytes;
 241         uint32_t stride_size_bytes;
 242         uint32_t bootstream_size_pages;
 243         uint32_t fw1_start_page;
 244         uint32_t fw2_start_page;
 245
 246         fcb = malloc(nand_writesize);
 247         if (!fcb) {
 248                 printf("MX28 NAND: Unable to allocate FCB\n");
 249                 return NULL;
 250         }
 251
 252         memset(fcb, 0, nand_writesize);
 253
 254         fcb->fingerprint =                      0x20424346;
 255         fcb->version =                          0x01000000;
 256
 257         /*
 258          * FIXME: These here are default values as found in kobs-ng. We should
 259          * probably retrieve the data from NAND or something.
 260          */
 261         fcb->timing.data_setup =                80;
 262         fcb->timing.data_hold =                 60;
 263         fcb->timing.address_setup =             25;
 264         fcb->timing.dsample_time =              6;
 265
 266         fcb->page_data_size =           nand_writesize;
 267         fcb->total_page_size =          nand_writesize + nand_oobsize;
 268         fcb->sectors_per_block =        nand_erasesize / nand_writesize;
 269
 270         fcb->num_ecc_blocks_per_page =  (nand_writesize / 512) - 1;
 271         fcb->ecc_block_0_size =         512;
 272         fcb->ecc_block_n_size =         512;
 273         fcb->metadata_bytes =           10;
 274         fcb->ecc_block_n_ecc_type = mx28_nand_get_ecc_strength(
 275                                         nand_writesize, nand_oobsize) >> 1;
 276         fcb->ecc_block_0_ecc_type = mx28_nand_get_ecc_strength(
 277                                         nand_writesize, nand_oobsize) >> 1;
 278         if (fcb->ecc_block_n_ecc_type == 0) {
 279                 printf("MX28 NAND: Unsupported NAND geometry\n");
 280                 goto err;
 281         }
 282
 283         fcb->boot_patch =                       0;
 284         fcb->patch_sectors =                    0;
 285
 286         fcb->badblock_marker_byte =     mx28_nand_mark_byte_offset();
 287         fcb->badblock_marker_start_bit = mx28_nand_mark_bit_offset();
 288         fcb->bb_marker_physical_offset = nand_writesize;
 289
 290         stride_size_bytes = STRIDE_PAGES * nand_writesize;
 291         bcb_size_bytes = stride_size_bytes * STRIDE_COUNT;
 292
 293         bootstream_size_pages = (size + (nand_writesize - 1)) /
 294                                         nand_writesize;
 295
 296         fw1_start_page = 2 * bcb_size_bytes / nand_writesize;
 297         fw2_start_page = (2 * bcb_size_bytes + MAX_BOOTSTREAM_SIZE) /
 298                                 nand_writesize;
 299
 300         fcb->firmware1_starting_sector =        fw1_start_page;
 301         fcb->firmware2_starting_sector =        fw2_start_page;
 302         fcb->sectors_in_firmware1 =             bootstream_size_pages;
 303         fcb->sectors_in_firmware2 =             bootstream_size_pages;
 304
 305         fcb->dbbt_search_area_start_address =   STRIDE_PAGES * STRIDE_COUNT;
 306
 307         return fcb;
 308
 309 err:
 310         free(fcb);
 311         return NULL;
 312 }
 313
 314 static struct mx28_nand_dbbt *mx28_nand_get_dbbt(void)
 315 {
 316         struct mx28_nand_dbbt *dbbt;
 317
 318         dbbt = malloc(nand_writesize);
 319         if (!dbbt) {
 320                 printf("MX28 NAND: Unable to allocate DBBT\n");
 321                 return NULL;
 322         }
 323
 324         memset(dbbt, 0, nand_writesize);
 325
 326         dbbt->fingerprint       = 0x54424244;
 327         dbbt->version           = 0x1;
 328
 329         return dbbt;
 330 }
 331
 332 static inline uint8_t mx28_nand_parity_13_8(const uint8_t b)
 333 {
 334         uint32_t parity = 0, tmp;
 335
 336         tmp = ((b >> 6) ^ (b >> 5) ^ (b >> 3) ^ (b >> 2)) & 1;
 337         parity |= tmp << 0;
 338
 339         tmp = ((b >> 7) ^ (b >> 5) ^ (b >> 4) ^ (b >> 2) ^ (b >> 1)) & 1;
 340         parity |= tmp << 1;
 341
 342         tmp = ((b >> 7) ^ (b >> 6) ^ (b >> 5) ^ (b >> 1) ^ (b >> 0)) & 1;
 343         parity |= tmp << 2;
 344
 345         tmp = ((b >> 7) ^ (b >> 4) ^ (b >> 3) ^ (b >> 0)) & 1;
 346         parity |= tmp << 3;
 347
 348         tmp = ((b >> 6) ^ (b >> 4) ^ (b >> 3) ^
 349                 (b >> 2) ^ (b >> 1) ^ (b >> 0)) & 1;
 350         parity |= tmp << 4;
 351
 352         return parity;
 353 }
 354
 355 static uint8_t *mx28_nand_fcb_block(struct mx28_nand_fcb *fcb)
 356 {
 357         uint8_t *block;
 358         uint8_t *ecc;
 359         int i;
 360
 361         block = malloc(nand_writesize + nand_oobsize);
 362         if (!block) {
 363                 printf("MX28 NAND: Unable to allocate FCB block\n");
 364                 return NULL;
 365         }
 366
 367         memset(block, 0, nand_writesize + nand_oobsize);
 368
 369         /* Update the FCB checksum */
 370         fcb->checksum = mx28_nand_block_csum(((uint8_t *)fcb) + 4, 508);
 371
 372         /* Figure 12-11. in iMX28RM, rev. 1, says FCB is at offset 12 */
 373         memcpy(block + 12, fcb, sizeof(struct mx28_nand_fcb));
 374
 375         /* ECC is at offset 12 + 512 */
 376         ecc = block + 12 + 512;
 377
 378         /* Compute the ECC parity */
 379         for (i = 0; i < sizeof(struct mx28_nand_fcb); i++)
 380                 ecc[i] = mx28_nand_parity_13_8(block[i + 12]);
 381
 382         return block;
 383 }
 384
 385 static int mx28_nand_write_fcb(struct mx28_nand_fcb *fcb, uint8_t *buf)
 386 {
 387         uint32_t offset;
 388         uint8_t *fcbblock;
 389         int ret = 0;
 390         int i;
 391
 392         fcbblock = mx28_nand_fcb_block(fcb);
 393         if (!fcbblock)
 394                 return -1;
 395
 396         for (i = 0; i < STRIDE_PAGES * STRIDE_COUNT; i += STRIDE_PAGES) {
 397                 offset = i * nand_writesize;
 398                 memcpy(buf + offset, fcbblock, nand_writesize + nand_oobsize);
 399                 /* Mark the NAND page is OK. */
 400                 buf[offset + nand_writesize] = 0xff;
 401         }
 402
 403         free(fcbblock);
 404         return ret;
 405 }
 406
 407 static int mx28_nand_write_dbbt(struct mx28_nand_dbbt *dbbt, uint8_t *buf)
 408 {
 409         uint32_t offset;
 410         int i = STRIDE_PAGES * STRIDE_COUNT;
 411
 412         for (; i < 2 * STRIDE_PAGES * STRIDE_COUNT; i += STRIDE_PAGES) {
 413                 offset = i * nand_writesize;
 414                 memcpy(buf + offset, dbbt, sizeof(struct mx28_nand_dbbt));
 415         }
 416
 417         return 0;
 418 }
 419
 420 static int mx28_nand_write_firmware(struct mx28_nand_fcb *fcb, int infd,
 421                                     uint8_t *buf)
 422 {
 423         int ret;
 424         off_t size;
 425         uint32_t offset1, offset2;
 426
 427         size = lseek(infd, 0, SEEK_END);
 428         lseek(infd, 0, SEEK_SET);
 429
 430         offset1 = fcb->firmware1_starting_sector * nand_writesize;
 431         offset2 = fcb->firmware2_starting_sector * nand_writesize;
 432
 433         ret = read(infd, buf + offset1, size);
 434         if (ret != size)
 435                 return -1;
 436
 437         memcpy(buf + offset2, buf + offset1, size);
 438
 439         return 0;
 440 }
 441
 442 static void usage(void)
 443 {
 444         printf(
 445                 "Usage: mxsboot [ops] <type> <infile> <outfile>\n"
 446                 "Augment BootStream file with a proper header for i.MX28 boot\n"
 447                 "\n"
 448                 "  <type>       type of image:\n"
 449                 "                 \"nand\" for NAND image\n"
 450                 "                 \"sd\" for SD image\n"
 451                 "  <infile>     input file, the u-boot.sb bootstream\n"
 452                 "  <outfile>    output file, the bootable image\n"
 453                 "\n");
 454         printf(
 455                 "For NAND boot, these options are accepted:\n"
 456                 "  -w <size>    NAND page size\n"
 457                 "  -o <size>    NAND OOB size\n"
 458                 "  -e <size>    NAND erase size\n"
 459                 "\n"
 460                 "For SD boot, these options are accepted:\n"
 461                 "  -p <sector>  Sector where the SGTL partition starts\n"
 462         );
 463 }
 464
 465 static int mx28_create_nand_image(int infd, int outfd)
 466 {
 467         struct mx28_nand_fcb *fcb;
 468         struct mx28_nand_dbbt *dbbt;
 469         int ret = -1;
 470         uint8_t *buf;
 471         int size;
 472         ssize_t wr_size;
 473
 474         size = nand_writesize * 512 + 2 * MAX_BOOTSTREAM_SIZE;
 475
 476         buf = malloc(size);
 477         if (!buf) {
 478                 printf("Can not allocate output buffer of %d bytes\n", size);
 479                 goto err0;
 480         }
 481
 482         memset(buf, 0, size);
 483
 484         fcb = mx28_nand_get_fcb(MAX_BOOTSTREAM_SIZE);
 485         if (!fcb) {
 486                 printf("Unable to compile FCB\n");
 487                 goto err1;
 488         }
 489
 490         dbbt = mx28_nand_get_dbbt();
 491         if (!dbbt) {
 492                 printf("Unable to compile DBBT\n");
 493                 goto err2;
 494         }
 495
 496         ret = mx28_nand_write_fcb(fcb, buf);
 497         if (ret) {
 498                 printf("Unable to write FCB to buffer\n");
 499                 goto err3;
 500         }
 501
 502         ret = mx28_nand_write_dbbt(dbbt, buf);
 503         if (ret) {
 504                 printf("Unable to write DBBT to buffer\n");
 505                 goto err3;
 506         }
 507
 508         ret = mx28_nand_write_firmware(fcb, infd, buf);
 509         if (ret) {
 510                 printf("Unable to write firmware to buffer\n");
 511                 goto err3;
 512         }
 513
 514         wr_size = write(outfd, buf, size);
 515         if (wr_size != size) {
 516                 ret = -1;
 517                 goto err3;
 518         }
 519
 520         ret = 0;
 521
 522 err3:
 523         free(dbbt);
 524 err2:
 525         free(fcb);
 526 err1:
 527         free(buf);
 528 err0:
 529         return ret;
 530 }
 531
 532 static int mx28_create_sd_image(int infd, int outfd)
 533 {
 534         int ret = -1;
 535         uint32_t *buf;
 536         int size;
 537         off_t fsize;
 538         ssize_t wr_size;
 539         struct mx28_sd_config_block *cb;
 540
 541         fsize = lseek(infd, 0, SEEK_END);
 542         lseek(infd, 0, SEEK_SET);
 543         size = fsize + 4 * 512;
 544
 545         buf = malloc(size);
 546         if (!buf) {
 547                 printf("Can not allocate output buffer of %d bytes\n", size);
 548                 goto err0;
 549         }
 550
 551         ret = read(infd, (uint8_t *)buf + 4 * 512, fsize);
 552         if (ret != fsize) {
 553                 ret = -1;
 554                 goto err1;
 555         }
 556
 557         cb = (struct mx28_sd_config_block *)buf;
 558
 559         cb->signature = cpu_to_le32(0x00112233);
 560         cb->primary_boot_tag = cpu_to_le32(0x1);
 561         cb->secondary_boot_tag = cpu_to_le32(0x1);
 562         cb->num_copies = cpu_to_le32(1);
 563         cb->drv_info[0].chip_num = cpu_to_le32(0x0);
 564         cb->drv_info[0].drive_type = cpu_to_le32(0x0);
 565         cb->drv_info[0].tag = cpu_to_le32(0x1);
 566         cb->drv_info[0].first_sector_number = cpu_to_le32(sd_sector + 4);
 567         cb->drv_info[0].sector_count = cpu_to_le32((size - 4) / 512);
 568
 569         wr_size = write(outfd, buf, size);
 570         if (wr_size != size) {
 571                 ret = -1;
 572                 goto err1;
 573         }
 574
 575         ret = 0;
 576
 577 err1:
 578         free(buf);
 579 err0:
 580         return ret;
 581 }
 582
 583 static int parse_ops(int argc, char **argv)
 584 {
 585         int i;
 586         int tmp;
 587         char *end;
 588         enum param {
 589                 PARAM_WRITE,
 590                 PARAM_OOB,
 591                 PARAM_ERASE,
 592                 PARAM_PART,
 593                 PARAM_SD,
 594                 PARAM_NAND
 595         };
 596         int type;
 597
 598         if (argc < 4)
 599                 return -1;
 600
 601         for (i = 1; i < argc; i++) {
 602                 if (!strncmp(argv[i], "-w", 2))
 603                         type = PARAM_WRITE;
 604                 else if (!strncmp(argv[i], "-o", 2))
 605                         type = PARAM_OOB;
 606                 else if (!strncmp(argv[i], "-e", 2))
 607                         type = PARAM_ERASE;
 608                 else if (!strncmp(argv[i], "-p", 2))
 609                         type = PARAM_PART;
 610                 else    /* SD/MMC */
 611                         break;
 612
 613                 tmp = strtol(argv[++i], &end, 10);
 614                 if (tmp % 2)
 615                         return -1;
 616                 if (tmp <= 0)
 617                         return -1;
 618
 619                 if (type == PARAM_WRITE)
 620                         nand_writesize = tmp;
 621                 if (type == PARAM_OOB)
 622                         nand_oobsize = tmp;
 623                 if (type == PARAM_ERASE)
 624                         nand_erasesize = tmp;
 625                 if (type == PARAM_PART)
 626                         sd_sector = tmp;
 627         }
 628
 629         if (strcmp(argv[i], "sd") && strcmp(argv[i], "nand"))
 630                 return -1;
 631
 632         if (i + 3 != argc)
 633                 return -1;
 634
 635         return i;
 636 }
 637
 638 int main(int argc, char **argv)
 639 {
 640         int infd, outfd;
 641         int ret = 0;
 642         int offset;
 643
 644         offset = parse_ops(argc, argv);
 645         if (offset < 0) {
 646                 usage();
 647                 ret = 1;
 648                 goto err1;
 649         }
 650
 651         infd = open(argv[offset + 1], O_RDONLY);
 652         if (infd < 0) {
 653                 printf("Input BootStream file can not be opened\n");
 654                 ret = 2;
 655                 goto err1;
 656         }
 657
 658         outfd = open(argv[offset + 2], O_CREAT | O_TRUNC | O_WRONLY,
 659                                         S_IRUSR | S_IWUSR);
 660         if (outfd < 0) {
 661                 printf("Output file can not be created\n");
 662                 ret = 3;
 663                 goto err2;
 664         }
 665
 666         if (!strcmp(argv[offset], "sd"))
 667                 ret = mx28_create_sd_image(infd, outfd);
 668         else if (!strcmp(argv[offset], "nand"))
 669                 ret = mx28_create_nand_image(infd, outfd);
 670
 671         close(outfd);
 672 err2:
 673         close(infd);
 674 err1:
 675         return ret;
 676 }