tools/firmware-utils/src/mktplinkfw.c

   1 /*
   2  * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
   3  *
   4  * This tool was based on:
   5  *   TP-Link WR941 V2 firmware checksum fixing tool.
   6  *   Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License version 2 as published
  10  * by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <stdint.h>
  17 #include <string.h>
  18 #include <unistd.h>     /* for unlink() */
  19 #include <libgen.h>
  20 #include <getopt.h>     /* for getopt() */
  21 #include <stdarg.h>
  22 #include <errno.h>
  23 #include <sys/stat.h>
  24
  25 #include "md5.h"
  26
  27 #if (__BYTE_ORDER == __BIG_ENDIAN)
  28 #  define HOST_TO_BE32(x)       (x)
  29 #  define BE32_TO_HOST(x)       (x)
  30 #else
  31 #  define HOST_TO_BE32(x)       bswap_32(x)
  32 #  define BE32_TO_HOST(x)       bswap_32(x)
  33 #endif
  34
  35 #define HEADER_VERSION_V1       0x01000000
  36 #define HWID_TL_WA901ND_V1      0x09010001
  37 #define HWID_TL_WR741ND_V1      0x07410001
  38 #define HWID_TL_WR841N_V1_5     0x08410002
  39 #define HWID_TL_WR841ND_V3      0x08410003
  40 #define HWID_TL_WR841ND_V5      0x08410005
  41 #define HWID_TL_WR841ND_V7      0x08410007
  42 #define HWID_TL_WR941ND_V2      0x09410002
  43 #define HWID_TL_WR941ND_V4      0x09410004
  44 #define HWID_TL_WR1043ND_V1     0x10430001
  45
  46 #define MD5SUM_LEN      16
  47
  48 struct file_info {
  49         char            *file_name;     /* name of the file */
  50         uint32_t        file_size;      /* length of the file */
  51 };
  52
  53 struct fw_header {
  54         uint32_t        version;        /* header version */
  55         char            vendor_name[24];
  56         char            fw_version[36];
  57         uint32_t        hw_id;          /* hardware id */
  58         uint32_t        hw_rev;         /* hardware revision */
  59         uint32_t        unk1;
  60         uint8_t         md5sum1[MD5SUM_LEN];
  61         uint32_t        unk2;
  62         uint8_t         md5sum2[MD5SUM_LEN];
  63         uint32_t        unk3;
  64         uint32_t        kernel_la;      /* kernel load address */
  65         uint32_t        kernel_ep;      /* kernel entry point */
  66         uint32_t        fw_length;      /* total length of the firmware */
  67         uint32_t        kernel_ofs;     /* kernel data offset */
  68         uint32_t        kernel_len;     /* kernel data length */
  69         uint32_t        rootfs_ofs;     /* rootfs data offset */
  70         uint32_t        rootfs_len;     /* rootfs data length */
  71         uint32_t        boot_ofs;       /* bootloader data offset */
  72         uint32_t        boot_len;       /* bootloader data length */
  73         uint8_t         pad[360];
  74 } __attribute__ ((packed));
  75
  76 struct board_info {
  77         char            *id;
  78         uint32_t        hw_id;
  79         uint32_t        hw_rev;
  80         uint32_t        fw_max_len;
  81         uint32_t        kernel_la;
  82         uint32_t        kernel_ep;
  83         uint32_t        rootfs_ofs;
  84 };
  85
  86 /*
  87  * Globals
  88  */
  89 static char *ofname;
  90 static char *progname;
  91 static char *vendor = "TP-LINK Technologies";
  92 static char *version = "ver. 1.0";
  93
  94 static char *board_id;
  95 static struct board_info *board;
  96 static struct file_info kernel_info;
  97 static uint32_t kernel_la = 0;
  98 static uint32_t kernel_ep = 0;
  99 static struct file_info rootfs_info;
 100 static uint32_t rootfs_ofs = 0;
 101 static struct file_info boot_info;
 102 static int combined;
 103 static int strip_padding;
 104
 105 static struct file_info inspect_info;
 106 static int extract = 0;
 107
 108 char md5salt_normal[MD5SUM_LEN] = {
 109         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 110         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 111 };
 112
 113 char md5salt_boot[MD5SUM_LEN] = {
 114         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 115         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 116 };
 117
 118 static struct board_info boards[] = {
 119         {
 120                 .id             = "TL-WA901NDv1",
 121                 .hw_id          = HWID_TL_WA901ND_V1,
 122                 .hw_rev         = 1,
 123                 .fw_max_len     = 0x3c0000,
 124                 .kernel_la      = 0x80060000,
 125                 .kernel_ep      = 0x80060000,
 126                 .rootfs_ofs     = 0x140000,
 127         }, {
 128                 .id             = "TL-WR741NDv1",
 129                 .hw_id          = HWID_TL_WR741ND_V1,
 130                 .hw_rev         = 1,
 131                 .fw_max_len     = 0x3c0000,
 132                 .kernel_la      = 0x80060000,
 133                 .kernel_ep      = 0x80060000,
 134                 .rootfs_ofs     = 0x140000,
 135         }, {
 136                 .id             = "TL-WR841Nv1.5",
 137                 .hw_id          = HWID_TL_WR841N_V1_5,
 138                 .hw_rev         = 2,
 139                 .fw_max_len     = 0x3c0000,
 140                 .kernel_la      = 0x80060000,
 141                 .kernel_ep      = 0x80060000,
 142                 .rootfs_ofs     = 0x140000,
 143         }, {
 144                 .id             = "TL-WR841NDv3",
 145                 .hw_id          = HWID_TL_WR841ND_V3,
 146                 .hw_rev         = 3,
 147                 .fw_max_len     = 0x3c0000,
 148                 .kernel_la      = 0x80060000,
 149                 .kernel_ep      = 0x80060000,
 150                 .rootfs_ofs     = 0x140000,
 151         }, {
 152                 .id             = "TL-WR841NDv5",
 153                 .hw_id          = HWID_TL_WR841ND_V5,
 154                 .hw_rev         = 1,
 155                 .fw_max_len     = 0x3c0000,
 156                 .kernel_la      = 0x80060000,
 157                 .kernel_ep      = 0x80060000,
 158                 .rootfs_ofs     = 0x140000,
 159         }, {
 160                 .id             = "TL-WR841NDv7",
 161                 .hw_id          = HWID_TL_WR841ND_V7,
 162                 .hw_rev         = 1,
 163                 .fw_max_len     = 0x3c0000,
 164                 .kernel_la      = 0x80060000,
 165                 .kernel_ep      = 0x80060000,
 166                 .rootfs_ofs     = 0x140000,
 167         }, {
 168                 .id             = "TL-WR941NDv2",
 169                 .hw_id          = HWID_TL_WR941ND_V2,
 170                 .hw_rev         = 2,
 171                 .fw_max_len     = 0x3c0000,
 172                 .kernel_la      = 0x80060000,
 173                 .kernel_ep      = 0x80060000,
 174                 .rootfs_ofs     = 0x140000,
 175         }, {
 176                 .id             = "TL-WR941NDv4",
 177                 .hw_id          = HWID_TL_WR941ND_V4,
 178                 .hw_rev         = 1,
 179                 .fw_max_len     = 0x3c0000,
 180                 .kernel_la      = 0x80060000,
 181                 .kernel_ep      = 0x80060000,
 182                 .rootfs_ofs     = 0x140000,
 183         }, {
 184                 .id             = "TL-WR1043NDv1",
 185                 .hw_id          = HWID_TL_WR1043ND_V1,
 186                 .hw_rev         = 1,
 187                 .fw_max_len     = 0x7c0000,
 188                 .kernel_la      = 0x80060000,
 189                 .kernel_ep      = 0x80060000,
 190                 .rootfs_ofs     = 0x140000,
 191         }, {
 192                 /* terminating entry */
 193         }
 194 };
 195
 196 /*
 197  * Message macros
 198  */
 199 #define ERR(fmt, ...) do { \
 200         fflush(0); \
 201         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 202                         progname, ## __VA_ARGS__ ); \
 203 } while (0)
 204
 205 #define ERRS(fmt, ...) do { \
 206         int save = errno; \
 207         fflush(0); \
 208         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 209                         progname, ## __VA_ARGS__, strerror(save)); \
 210 } while (0)
 211
 212 #define DBG(fmt, ...) do { \
 213         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 214 } while (0)
 215
 216 static struct board_info *find_board(char *id)
 217 {
 218         struct board_info *ret;
 219         struct board_info *board;
 220
 221         ret = NULL;
 222         for (board = boards; board->id != NULL; board++){
 223                 if (strcasecmp(id, board->id) == 0) {
 224                         ret = board;
 225                         break;
 226                 }
 227         };
 228
 229         return ret;
 230 }
 231
 232 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 233 {
 234         struct board_info *board;
 235
 236         for (board = boards; board->id != NULL; board++) {
 237                 if (hw_id == board->hw_id)
 238                         return board;
 239         };
 240
 241         return NULL;
 242 }
 243
 244
 245 static void usage(int status)
 246 {
 247         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 248         struct board_info *board;
 249
 250         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 251         fprintf(stream,
 252 "\n"
 253 "Options:\n"
 254 "  -B <board>      create image for the board specified with <board>\n"
 255 "  -c              use combined kernel image\n"
 256 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 257 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 258 "  -k <file>       read kernel image from the file <file>\n"
 259 "  -r <file>       read rootfs image from the file <file>\n"
 260 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 261 "  -o <file>       write output to the file <file>\n"
 262 "  -s              strip padding from the end of the image\n"
 263 "  -N <vendor>     set image vendor to <vendor>\n"
 264 "  -V <version>    set image version to <version>\n"
 265 "  -i <file>       inspect given firmware file <file>\n"
 266 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 267 "  -h              show this screen\n"
 268         );
 269
 270         exit(status);
 271 }
 272
 273 static int get_md5(char *data, int size, char *md5)
 274 {
 275         MD5_CTX ctx;
 276
 277         MD5_Init(&ctx);
 278         MD5_Update(&ctx, data, size);
 279         MD5_Final(md5, &ctx);
 280 }
 281
 282 static int get_file_stat(struct file_info *fdata)
 283 {
 284         struct stat st;
 285         int res;
 286
 287         if (fdata->file_name == NULL)
 288                 return 0;
 289
 290         res = stat(fdata->file_name, &st);
 291         if (res){
 292                 ERRS("stat failed on %s", fdata->file_name);
 293                 return res;
 294         }
 295
 296         fdata->file_size = st.st_size;
 297         return 0;
 298 }
 299
 300 static int read_to_buf(struct file_info *fdata, char *buf)
 301 {
 302         FILE *f;
 303         int ret = EXIT_FAILURE;
 304
 305         f = fopen(fdata->file_name, "r");
 306         if (f == NULL) {
 307                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 308                 goto out;
 309         }
 310
 311         errno = 0;
 312         fread(buf, fdata->file_size, 1, f);
 313         if (errno != 0) {
 314                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 315                 goto out_close;
 316         }
 317
 318         ret = EXIT_SUCCESS;
 319
 320  out_close:
 321         fclose(f);
 322  out:
 323         return ret;
 324 }
 325
 326 static int check_options(void)
 327 {
 328         int ret;
 329
 330         if (inspect_info.file_name) {
 331                 ret = get_file_stat(&inspect_info);
 332                 if (ret)
 333                         return ret;
 334
 335                 return 0;
 336         } else if (extract) {
 337                 ERR("no firmware for inspection specified");
 338                 return -1;
 339         }
 340
 341         if (board_id == NULL) {
 342                 ERR("no board specified");
 343                 return -1;
 344         }
 345
 346         board = find_board(board_id);
 347         if (board == NULL) {
 348                 ERR("unknown/unsupported board id \"%s\"", board_id);
 349                 return -1;
 350         }
 351         if (!kernel_la)
 352                 kernel_la = board->kernel_la;
 353         if (!kernel_ep)
 354                 kernel_ep = board->kernel_ep;
 355         if (!rootfs_ofs)
 356                 rootfs_ofs = board->rootfs_ofs;
 357
 358         if (kernel_info.file_name == NULL) {
 359                 ERR("no kernel image specified");
 360                 return -1;
 361         }
 362
 363         ret = get_file_stat(&kernel_info);
 364         if (ret)
 365                 return ret;
 366
 367         if (combined) {
 368                 if (kernel_info.file_size >
 369                     board->fw_max_len - sizeof(struct fw_header)) {
 370                         ERR("kernel image is too big");
 371                         return -1;
 372                 }
 373         } else {
 374                 if (kernel_info.file_size >
 375                     rootfs_ofs - sizeof(struct fw_header)) {
 376                         ERR("kernel image is too big");
 377                         return -1;
 378                 }
 379                 if (rootfs_info.file_name == NULL) {
 380                         ERR("no rootfs image specified");
 381                         return -1;
 382                 }
 383
 384                 ret = get_file_stat(&rootfs_info);
 385                 if (ret)
 386                         return ret;
 387
 388                 if (rootfs_info.file_size >
 389                     (board->fw_max_len - rootfs_ofs)) {
 390                         ERR("rootfs image is too big");
 391                         return -1;
 392                 }
 393         }
 394
 395         if (ofname == NULL) {
 396                 ERR("no output file specified");
 397                 return -1;
 398         }
 399
 400         return 0;
 401 }
 402
 403 static void fill_header(char *buf, int len)
 404 {
 405         struct fw_header *hdr = (struct fw_header *)buf;
 406
 407         memset(hdr, 0, sizeof(struct fw_header));
 408
 409         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 410         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 411         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 412         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 413         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 414
 415         if (boot_info.file_size == 0)
 416                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 417         else
 418                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 419
 420         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 421         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 422         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 423         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 424         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 425         if (!combined) {
 426                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 427                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 428         }
 429
 430         get_md5(buf, len, hdr->md5sum1);
 431 }
 432
 433 static int write_fw(char *data, int len)
 434 {
 435         FILE *f;
 436         int ret = EXIT_FAILURE;
 437
 438         f = fopen(ofname, "w");
 439         if (f == NULL) {
 440                 ERRS("could not open \"%s\" for writing", ofname);
 441                 goto out;
 442         }
 443
 444         errno = 0;
 445         fwrite(data, len, 1, f);
 446         if (errno) {
 447                 ERRS("unable to write output file");
 448                 goto out_flush;
 449         }
 450
 451         DBG("firmware file \"%s\" completed", ofname);
 452
 453         ret = EXIT_SUCCESS;
 454
 455  out_flush:
 456         fflush(f);
 457         fclose(f);
 458         if (ret != EXIT_SUCCESS) {
 459                 unlink(ofname);
 460         }
 461  out:
 462         return ret;
 463 }
 464
 465 static int build_fw(void)
 466 {
 467         int buflen;
 468         char *buf;
 469         char *p;
 470         int ret = EXIT_FAILURE;
 471         int writelen = 0;
 472
 473         buflen = board->fw_max_len;
 474
 475         buf = malloc(buflen);
 476         if (!buf) {
 477                 ERR("no memory for buffer\n");
 478                 goto out;
 479         }
 480
 481         memset(buf, 0xff, buflen);
 482         p = buf + sizeof(struct fw_header);
 483         ret = read_to_buf(&kernel_info, p);
 484         if (ret)
 485                 goto out_free_buf;
 486
 487         writelen = kernel_info.file_size;
 488
 489         if (!combined) {
 490                 p = buf + rootfs_ofs;
 491                 ret = read_to_buf(&rootfs_info, p);
 492                 if (ret)
 493                         goto out_free_buf;
 494
 495                 writelen = rootfs_ofs + rootfs_info.file_size;
 496         }
 497
 498         if (!strip_padding)
 499                 writelen = buflen;
 500
 501         fill_header(buf, writelen);
 502         ret = write_fw(buf, writelen);
 503         if (ret)
 504                 goto out_free_buf;
 505
 506         ret = EXIT_SUCCESS;
 507
 508  out_free_buf:
 509         free(buf);
 510  out:
 511         return ret;
 512 }
 513
 514 /* Helper functions to inspect_fw() representing different output formats */
 515 static inline void inspect_fw_pstr(char *label, char *str)
 516 {
 517         printf("%-23s: %s\n", label, str);
 518 }
 519
 520 static inline void inspect_fw_phex(char *label, uint32_t val)
 521 {
 522         printf("%-23s: 0x%08x\n", label, val);
 523 }
 524
 525 static inline void inspect_fw_phexpost(char *label,
 526                                        uint32_t val, char *post)
 527 {
 528         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 529 }
 530
 531 static inline void inspect_fw_phexdef(char *label,
 532                                       uint32_t val, uint32_t defval)
 533 {
 534         printf("%-23s: 0x%08x                  ", label, val);
 535
 536         if (val == defval)
 537                 printf("(== OpenWrt default)\n");
 538         else
 539                 printf("(OpenWrt default: 0x%08x)\n", defval);
 540 }
 541
 542 static inline void inspect_fw_phexexp(char *label,
 543                                       uint32_t val, uint32_t expval)
 544 {
 545         printf("%-23s: 0x%08x ", label, val);
 546
 547         if (val == expval)
 548                 printf("(ok)\n");
 549         else
 550                 printf("(expected: 0x%08x)\n", expval);
 551 }
 552
 553 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 554 {
 555         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 556 }
 557
 558 static inline void inspect_fw_phexdecdef(char *label,
 559                                          uint32_t val, uint32_t defval)
 560 {
 561         printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
 562
 563         if (val == defval)
 564                 printf("(== OpenWrt default)\n");
 565         else
 566                 printf("(OpenWrt default: 0x%08x)\n", defval);
 567 }
 568
 569 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
 570 {
 571         int i;
 572
 573         printf("%-23s:", label);
 574         for (i=0; i<MD5SUM_LEN; i++)
 575                 printf(" %02x", val[i]);
 576         printf(" %s\n", text);
 577 }
 578
 579 static int inspect_fw(void)
 580 {
 581         char *buf;
 582         struct fw_header *hdr;
 583         uint8_t md5sum[MD5SUM_LEN];
 584         struct board_info *board;
 585         int ret = EXIT_FAILURE;
 586
 587         buf = malloc(inspect_info.file_size);
 588         if (!buf) {
 589                 ERR("no memory for buffer!\n");
 590                 goto out;
 591         }
 592
 593         ret = read_to_buf(&inspect_info, buf);
 594         if (ret)
 595                 goto out_free_buf;
 596         hdr = (struct fw_header *)buf;
 597
 598         inspect_fw_pstr("File name", inspect_info.file_name);
 599         inspect_fw_phexdec("File size", inspect_info.file_size);
 600
 601         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 602                 ERR("file does not seem to have V1 header!\n");
 603                 goto out_free_buf;
 604         }
 605
 606         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 607
 608         if (BE32_TO_HOST(hdr->unk1) != 0)
 609                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 610
 611         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 612         if (BE32_TO_HOST(hdr->boot_len) == 0)
 613                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 614         else
 615                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 616         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 617
 618         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 619                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 620                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 621         } else {
 622                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 623         }
 624         if (BE32_TO_HOST(hdr->unk2) != 0)
 625                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 626         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 627                            "(purpose yet unknown, unchecked here)");
 628         if (BE32_TO_HOST(hdr->unk3) != 0)
 629                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 630
 631         printf("\n");
 632
 633         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 634         inspect_fw_pstr("Firmware version", hdr->fw_version);
 635         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 636         if (board) {
 637                 inspect_fw_phexpost("Hardware ID",
 638                                     BE32_TO_HOST(hdr->hw_id), board->id);
 639                 inspect_fw_phexexp("Hardware Revision",
 640                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 641         } else {
 642                 inspect_fw_phexpost("Hardware ID",
 643                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 644                 inspect_fw_phex("Hardware Revision",
 645                                 BE32_TO_HOST(hdr->hw_rev));
 646         }
 647
 648         printf("\n");
 649
 650         inspect_fw_phexdec("Kernel data offset",
 651                            BE32_TO_HOST(hdr->kernel_ofs));
 652         inspect_fw_phexdec("Kernel data length",
 653                            BE32_TO_HOST(hdr->kernel_len));
 654         if (board) {
 655                 inspect_fw_phexdef("Kernel load address",
 656                                    BE32_TO_HOST(hdr->kernel_la),
 657                                    board->kernel_la);
 658                 inspect_fw_phexdef("Kernel entry point",
 659                                    BE32_TO_HOST(hdr->kernel_ep),
 660                                    board->kernel_ep);
 661                 inspect_fw_phexdecdef("Rootfs data offset",
 662                                       BE32_TO_HOST(hdr->rootfs_ofs),
 663                                       board->rootfs_ofs);
 664         } else {
 665                 inspect_fw_phex("Kernel load address",
 666                                 BE32_TO_HOST(hdr->kernel_la));
 667                 inspect_fw_phex("Kernel entry point",
 668                                 BE32_TO_HOST(hdr->kernel_ep));
 669                 inspect_fw_phexdec("Rootfs data offset",
 670                                    BE32_TO_HOST(hdr->rootfs_ofs));
 671         }
 672         inspect_fw_phexdec("Rootfs data length",
 673                            BE32_TO_HOST(hdr->rootfs_len));
 674         inspect_fw_phexdec("Boot loader data offset",
 675                            BE32_TO_HOST(hdr->boot_ofs));
 676         inspect_fw_phexdec("Boot loader data length",
 677                            BE32_TO_HOST(hdr->boot_len));
 678         inspect_fw_phexdec("Total firmware length",
 679                            BE32_TO_HOST(hdr->fw_length));
 680
 681         if (extract) {
 682                 FILE *fp;
 683                 char *filename;
 684
 685                 printf("\n");
 686
 687                 filename = malloc(strlen(inspect_info.file_name) + 8);
 688                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 689                 printf("Extracting kernel to \"%s\"...\n", filename);
 690                 fp = fopen(filename, "w");
 691                 if (fp) {
 692                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 693                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 694                                 ERR("error in fwrite(): %s", strerror(errno));
 695                         }
 696                         fclose(fp);
 697                 } else {
 698                         ERR("error in fopen(): %s", strerror(errno));
 699                 }
 700                 free(filename);
 701
 702                 filename = malloc(strlen(inspect_info.file_name) + 8);
 703                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 704                 printf("Extracting rootfs to \"%s\"...\n", filename);
 705                 fp = fopen(filename, "w");
 706                 if (fp) {
 707                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 708                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 709                                 ERR("error in fwrite(): %s", strerror(errno));
 710                         }
 711                         fclose(fp);
 712                 } else {
 713                         ERR("error in fopen(): %s", strerror(errno));
 714                 }
 715                 free(filename);
 716         }
 717
 718  out_free_buf:
 719         free(buf);
 720  out:
 721         return ret;
 722 }
 723
 724 int main(int argc, char *argv[])
 725 {
 726         int ret = EXIT_FAILURE;
 727         int err;
 728
 729         FILE *outfile;
 730
 731         progname = basename(argv[0]);
 732
 733         while ( 1 ) {
 734                 int c;
 735
 736                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 737                 if (c == -1)
 738                         break;
 739
 740                 switch (c) {
 741                 case 'B':
 742                         board_id = optarg;
 743                         break;
 744                 case 'E':
 745                         sscanf(optarg, "0x%x", &kernel_ep);
 746                         break;
 747                 case 'L':
 748                         sscanf(optarg, "0x%x", &kernel_la);
 749                         break;
 750                 case 'V':
 751                         version = optarg;
 752                         break;
 753                 case 'N':
 754                         vendor = optarg;
 755                         break;
 756                 case 'c':
 757                         combined++;
 758                         break;
 759                 case 'k':
 760                         kernel_info.file_name = optarg;
 761                         break;
 762                 case 'r':
 763                         rootfs_info.file_name = optarg;
 764                         break;
 765                 case 'R':
 766                         sscanf(optarg, "0x%x", &rootfs_ofs);
 767                         break;
 768                 case 'o':
 769                         ofname = optarg;
 770                         break;
 771                 case 's':
 772                         strip_padding = 1;
 773                         break;
 774                 case 'i':
 775                         inspect_info.file_name = optarg;
 776                         break;
 777                 case 'x':
 778                         extract = 1;
 779                         break;
 780                 case 'h':
 781                         usage(EXIT_SUCCESS);
 782                         break;
 783                 default:
 784                         usage(EXIT_FAILURE);
 785                         break;
 786                 }
 787         }
 788
 789         ret = check_options();
 790         if (ret)
 791                 goto out;
 792
 793         if (!inspect_info.file_name)
 794                 ret = build_fw();
 795         else
 796                 ret = inspect_fw();
 797
 798  out:
 799         return ret;
 800 }
 801