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_WR941ND_V2      0x09410002
  42 #define HWID_TL_WR941ND_V4      0x09410004
  43 #define HWID_TL_WR1043ND_V1     0x10430001
  44
  45 #define MD5SUM_LEN      16
  46
  47 struct file_info {
  48         char            *file_name;     /* name of the file */
  49         uint32_t        file_size;      /* length of the file */
  50 };
  51
  52 struct fw_header {
  53         uint32_t        version;        /* header version */
  54         char            vendor_name[24];
  55         char            fw_version[36];
  56         uint32_t        hw_id;          /* hardware id */
  57         uint32_t        hw_rev;         /* hardware revision */
  58         uint32_t        unk1;
  59         uint8_t         md5sum1[MD5SUM_LEN];
  60         uint32_t        unk2;
  61         uint8_t         md5sum2[MD5SUM_LEN];
  62         uint32_t        unk3;
  63         uint32_t        kernel_la;      /* kernel load address */
  64         uint32_t        kernel_ep;      /* kernel entry point */
  65         uint32_t        fw_length;      /* total length of the firmware */
  66         uint32_t        kernel_ofs;     /* kernel data offset */
  67         uint32_t        kernel_len;     /* kernel data length */
  68         uint32_t        rootfs_ofs;     /* rootfs data offset */
  69         uint32_t        rootfs_len;     /* rootfs data length */
  70         uint32_t        boot_ofs;       /* bootloader data offset */
  71         uint32_t        boot_len;       /* bootloader data length */
  72         uint8_t         pad[360];
  73 } __attribute__ ((packed));
  74
  75 struct board_info {
  76         char            *id;
  77         uint32_t        hw_id;
  78         uint32_t        hw_rev;
  79         uint32_t        fw_max_len;
  80         uint32_t        kernel_la;
  81         uint32_t        kernel_ep;
  82         uint32_t        rootfs_ofs;
  83 };
  84
  85 /*
  86  * Globals
  87  */
  88 static char *ofname;
  89 static char *progname;
  90 static char *vendor = "TP-LINK Technologies";
  91 static char *version = "ver. 1.0";
  92
  93 static char *board_id;
  94 static struct board_info *board;
  95 static struct file_info kernel_info;
  96 static uint32_t kernel_la = 0;
  97 static uint32_t kernel_ep = 0;
  98 static struct file_info rootfs_info;
  99 static uint32_t rootfs_ofs = 0;
 100 static struct file_info boot_info;
 101 static int combined;
 102 static int strip_padding;
 103
 104 static struct file_info inspect_info;
 105 static int extract = 0;
 106
 107 char md5salt_normal[MD5SUM_LEN] = {
 108         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 109         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 110 };
 111
 112 char md5salt_boot[MD5SUM_LEN] = {
 113         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 114         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 115 };
 116
 117 static struct board_info boards[] = {
 118         {
 119                 .id             = "TL-WA901NDv1",
 120                 .hw_id          = HWID_TL_WA901ND_V1,
 121                 .hw_rev         = 1,
 122                 .fw_max_len     = 0x3c0000,
 123                 .kernel_la      = 0x80060000,
 124                 .kernel_ep      = 0x80060000,
 125                 .rootfs_ofs     = 0x140000,
 126         }, {
 127                 .id             = "TL-WR741NDv1",
 128                 .hw_id          = HWID_TL_WR741ND_V1,
 129                 .hw_rev         = 1,
 130                 .fw_max_len     = 0x3c0000,
 131                 .kernel_la      = 0x80060000,
 132                 .kernel_ep      = 0x80060000,
 133                 .rootfs_ofs     = 0x140000,
 134         }, {
 135                 .id             = "TL-WR841Nv1.5",
 136                 .hw_id          = HWID_TL_WR841N_V1_5,
 137                 .hw_rev         = 2,
 138                 .fw_max_len     = 0x3c0000,
 139                 .kernel_la      = 0x80060000,
 140                 .kernel_ep      = 0x80060000,
 141                 .rootfs_ofs     = 0x140000,
 142         }, {
 143                 .id             = "TL-WR841NDv3",
 144                 .hw_id          = HWID_TL_WR841ND_V3,
 145                 .hw_rev         = 3,
 146                 .fw_max_len     = 0x3c0000,
 147                 .kernel_la      = 0x80060000,
 148                 .kernel_ep      = 0x80060000,
 149                 .rootfs_ofs     = 0x140000,
 150         }, {
 151                 .id             = "TL-WR841NDv5",
 152                 .hw_id          = HWID_TL_WR841ND_V5,
 153                 .hw_rev         = 1,
 154                 .fw_max_len     = 0x3c0000,
 155                 .kernel_la      = 0x80060000,
 156                 .kernel_ep      = 0x80060000,
 157                 .rootfs_ofs     = 0x140000,
 158         }, {
 159                 .id             = "TL-WR941NDv2",
 160                 .hw_id          = HWID_TL_WR941ND_V2,
 161                 .hw_rev         = 2,
 162                 .fw_max_len     = 0x3c0000,
 163                 .kernel_la      = 0x80060000,
 164                 .kernel_ep      = 0x80060000,
 165                 .rootfs_ofs     = 0x140000,
 166         }, {
 167                 .id             = "TL-WR941NDv4",
 168                 .hw_id          = HWID_TL_WR941ND_V4,
 169                 .hw_rev         = 1,
 170                 .fw_max_len     = 0x3c0000,
 171                 .kernel_la      = 0x80060000,
 172                 .kernel_ep      = 0x80060000,
 173                 .rootfs_ofs     = 0x140000,
 174         }, {
 175                 .id             = "TL-WR1043NDv1",
 176                 .hw_id          = HWID_TL_WR1043ND_V1,
 177                 .hw_rev         = 1,
 178                 .fw_max_len     = 0x7c0000,
 179                 .kernel_la      = 0x80060000,
 180                 .kernel_ep      = 0x80060000,
 181                 .rootfs_ofs     = 0x140000,
 182         }, {
 183                 /* terminating entry */
 184         }
 185 };
 186
 187 /*
 188  * Message macros
 189  */
 190 #define ERR(fmt, ...) do { \
 191         fflush(0); \
 192         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 193                         progname, ## __VA_ARGS__ ); \
 194 } while (0)
 195
 196 #define ERRS(fmt, ...) do { \
 197         int save = errno; \
 198         fflush(0); \
 199         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 200                         progname, ## __VA_ARGS__, strerror(save)); \
 201 } while (0)
 202
 203 #define DBG(fmt, ...) do { \
 204         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 205 } while (0)
 206
 207 static struct board_info *find_board(char *id)
 208 {
 209         struct board_info *ret;
 210         struct board_info *board;
 211
 212         ret = NULL;
 213         for (board = boards; board->id != NULL; board++){
 214                 if (strcasecmp(id, board->id) == 0) {
 215                         ret = board;
 216                         break;
 217                 }
 218         };
 219
 220         return ret;
 221 }
 222
 223 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 224 {
 225         struct board_info *board;
 226
 227         for (board = boards; board->id != NULL; board++) {
 228                 if (hw_id == board->hw_id)
 229                         return board;
 230         };
 231
 232         return NULL;
 233 }
 234
 235
 236 static void usage(int status)
 237 {
 238         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 239         struct board_info *board;
 240
 241         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 242         fprintf(stream,
 243 "\n"
 244 "Options:\n"
 245 "  -B <board>      create image for the board specified with <board>\n"
 246 "  -c              use combined kernel image\n"
 247 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 248 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 249 "  -k <file>       read kernel image from the file <file>\n"
 250 "  -r <file>       read rootfs image from the file <file>\n"
 251 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 252 "  -o <file>       write output to the file <file>\n"
 253 "  -s              strip padding from the end of the image\n"
 254 "  -N <vendor>     set image vendor to <vendor>\n"
 255 "  -V <version>    set image version to <version>\n"
 256 "  -i <file>       inspect given firmware file <file>\n"
 257 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 258 "  -h              show this screen\n"
 259         );
 260
 261         exit(status);
 262 }
 263
 264 static int get_md5(char *data, int size, char *md5)
 265 {
 266         MD5_CTX ctx;
 267
 268         MD5_Init(&ctx);
 269         MD5_Update(&ctx, data, size);
 270         MD5_Final(md5, &ctx);
 271 }
 272
 273 static int get_file_stat(struct file_info *fdata)
 274 {
 275         struct stat st;
 276         int res;
 277
 278         if (fdata->file_name == NULL)
 279                 return 0;
 280
 281         res = stat(fdata->file_name, &st);
 282         if (res){
 283                 ERRS("stat failed on %s", fdata->file_name);
 284                 return res;
 285         }
 286
 287         fdata->file_size = st.st_size;
 288         return 0;
 289 }
 290
 291 static int read_to_buf(struct file_info *fdata, char *buf)
 292 {
 293         FILE *f;
 294         int ret = EXIT_FAILURE;
 295
 296         f = fopen(fdata->file_name, "r");
 297         if (f == NULL) {
 298                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 299                 goto out;
 300         }
 301
 302         errno = 0;
 303         fread(buf, fdata->file_size, 1, f);
 304         if (errno != 0) {
 305                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 306                 goto out_close;
 307         }
 308
 309         ret = EXIT_SUCCESS;
 310
 311  out_close:
 312         fclose(f);
 313  out:
 314         return ret;
 315 }
 316
 317 static int check_options(void)
 318 {
 319         int ret;
 320
 321         if (inspect_info.file_name) {
 322                 ret = get_file_stat(&inspect_info);
 323                 if (ret)
 324                         return ret;
 325
 326                 return 0;
 327         } else if (extract) {
 328                 ERR("no firmware for inspection specified");
 329                 return -1;
 330         }
 331
 332         if (board_id == NULL) {
 333                 ERR("no board specified");
 334                 return -1;
 335         }
 336
 337         board = find_board(board_id);
 338         if (board == NULL) {
 339                 ERR("unknown/unsupported board id \"%s\"", board_id);
 340                 return -1;
 341         }
 342         if (!kernel_la)
 343                 kernel_la = board->kernel_la;
 344         if (!kernel_ep)
 345                 kernel_ep = board->kernel_ep;
 346         if (!rootfs_ofs)
 347                 rootfs_ofs = board->rootfs_ofs;
 348
 349         if (kernel_info.file_name == NULL) {
 350                 ERR("no kernel image specified");
 351                 return -1;
 352         }
 353
 354         ret = get_file_stat(&kernel_info);
 355         if (ret)
 356                 return ret;
 357
 358         if (combined) {
 359                 if (kernel_info.file_size >
 360                     board->fw_max_len - sizeof(struct fw_header)) {
 361                         ERR("kernel image is too big");
 362                         return -1;
 363                 }
 364         } else {
 365                 if (kernel_info.file_size >
 366                     rootfs_ofs - sizeof(struct fw_header)) {
 367                         ERR("kernel image is too big");
 368                         return -1;
 369                 }
 370                 if (rootfs_info.file_name == NULL) {
 371                         ERR("no rootfs image specified");
 372                         return -1;
 373                 }
 374
 375                 ret = get_file_stat(&rootfs_info);
 376                 if (ret)
 377                         return ret;
 378
 379                 if (rootfs_info.file_size >
 380                     (board->fw_max_len - rootfs_ofs)) {
 381                         ERR("rootfs image is too big");
 382                         return -1;
 383                 }
 384         }
 385
 386         if (ofname == NULL) {
 387                 ERR("no output file specified");
 388                 return -1;
 389         }
 390
 391         return 0;
 392 }
 393
 394 static void fill_header(char *buf, int len)
 395 {
 396         struct fw_header *hdr = (struct fw_header *)buf;
 397
 398         memset(hdr, 0, sizeof(struct fw_header));
 399
 400         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 401         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 402         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 403         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 404         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 405
 406         if (boot_info.file_size == 0)
 407                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 408         else
 409                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 410
 411         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 412         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 413         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 414         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 415         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 416         if (!combined) {
 417                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 418                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 419         }
 420
 421         get_md5(buf, len, hdr->md5sum1);
 422 }
 423
 424 static int write_fw(char *data, int len)
 425 {
 426         FILE *f;
 427         int ret = EXIT_FAILURE;
 428
 429         f = fopen(ofname, "w");
 430         if (f == NULL) {
 431                 ERRS("could not open \"%s\" for writing", ofname);
 432                 goto out;
 433         }
 434
 435         errno = 0;
 436         fwrite(data, len, 1, f);
 437         if (errno) {
 438                 ERRS("unable to write output file");
 439                 goto out_flush;
 440         }
 441
 442         DBG("firmware file \"%s\" completed", ofname);
 443
 444         ret = EXIT_SUCCESS;
 445
 446  out_flush:
 447         fflush(f);
 448         fclose(f);
 449         if (ret != EXIT_SUCCESS) {
 450                 unlink(ofname);
 451         }
 452  out:
 453         return ret;
 454 }
 455
 456 static int build_fw(void)
 457 {
 458         int buflen;
 459         char *buf;
 460         char *p;
 461         int ret = EXIT_FAILURE;
 462         int writelen = 0;
 463
 464         buflen = board->fw_max_len;
 465
 466         buf = malloc(buflen);
 467         if (!buf) {
 468                 ERR("no memory for buffer\n");
 469                 goto out;
 470         }
 471
 472         memset(buf, 0xff, buflen);
 473         p = buf + sizeof(struct fw_header);
 474         ret = read_to_buf(&kernel_info, p);
 475         if (ret)
 476                 goto out_free_buf;
 477
 478         writelen = kernel_info.file_size;
 479
 480         if (!combined) {
 481                 p = buf + rootfs_ofs;
 482                 ret = read_to_buf(&rootfs_info, p);
 483                 if (ret)
 484                         goto out_free_buf;
 485
 486                 writelen = rootfs_ofs + rootfs_info.file_size;
 487         }
 488
 489         if (!strip_padding)
 490                 writelen = buflen;
 491
 492         fill_header(buf, writelen);
 493         ret = write_fw(buf, writelen);
 494         if (ret)
 495                 goto out_free_buf;
 496
 497         ret = EXIT_SUCCESS;
 498
 499  out_free_buf:
 500         free(buf);
 501  out:
 502         return ret;
 503 }
 504
 505 /* Helper functions to inspect_fw() representing different output formats */
 506 static inline void inspect_fw_pstr(char *label, char *str)
 507 {
 508         printf("%-23s: %s\n", label, str);
 509 }
 510
 511 static inline void inspect_fw_phex(char *label, uint32_t val)
 512 {
 513         printf("%-23s: 0x%08x\n", label, val);
 514 }
 515
 516 static inline void inspect_fw_phexpost(char *label,
 517                                        uint32_t val, char *post)
 518 {
 519         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 520 }
 521
 522 static inline void inspect_fw_phexdef(char *label,
 523                                       uint32_t val, uint32_t defval)
 524 {
 525         printf("%-23s: 0x%08x                  ", label, val);
 526
 527         if (val == defval)
 528                 printf("(== OpenWrt default)\n");
 529         else
 530                 printf("(OpenWrt default: 0x%08x)\n", defval);
 531 }
 532
 533 static inline void inspect_fw_phexexp(char *label,
 534                                       uint32_t val, uint32_t expval)
 535 {
 536         printf("%-23s: 0x%08x ", label, val);
 537
 538         if (val == expval)
 539                 printf("(ok)\n");
 540         else
 541                 printf("(expected: 0x%08x)\n", expval);
 542 }
 543
 544 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 545 {
 546         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 547 }
 548
 549 static inline void inspect_fw_phexdecdef(char *label,
 550                                          uint32_t val, uint32_t defval)
 551 {
 552         printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
 553
 554         if (val == defval)
 555                 printf("(== OpenWrt default)\n");
 556         else
 557                 printf("(OpenWrt default: 0x%08x)\n", defval);
 558 }
 559
 560 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
 561 {
 562         int i;
 563
 564         printf("%-23s:", label);
 565         for (i=0; i<MD5SUM_LEN; i++)
 566                 printf(" %02x", val[i]);
 567         printf(" %s\n", text);
 568 }
 569
 570 static int inspect_fw(void)
 571 {
 572         char *buf;
 573         struct fw_header *hdr;
 574         uint8_t md5sum[MD5SUM_LEN];
 575         struct board_info *board;
 576         int ret = EXIT_FAILURE;
 577
 578         buf = malloc(inspect_info.file_size);
 579         if (!buf) {
 580                 ERR("no memory for buffer!\n");
 581                 goto out;
 582         }
 583
 584         ret = read_to_buf(&inspect_info, buf);
 585         if (ret)
 586                 goto out_free_buf;
 587         hdr = (struct fw_header *)buf;
 588
 589         inspect_fw_pstr("File name", inspect_info.file_name);
 590         inspect_fw_phexdec("File size", inspect_info.file_size);
 591
 592         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 593                 ERR("file does not seem to have V1 header!\n");
 594                 goto out_free_buf;
 595         }
 596
 597         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 598
 599         if (BE32_TO_HOST(hdr->unk1) != 0)
 600                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 601
 602         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 603         if (BE32_TO_HOST(hdr->boot_len) == 0)
 604                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 605         else
 606                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 607         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 608
 609         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 610                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 611                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 612         } else {
 613                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 614         }
 615         if (BE32_TO_HOST(hdr->unk2) != 0)
 616                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 617         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 618                            "(purpose yet unknown, unchecked here)");
 619         if (BE32_TO_HOST(hdr->unk3) != 0)
 620                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 621
 622         printf("\n");
 623
 624         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 625         inspect_fw_pstr("Firmware version", hdr->fw_version);
 626         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 627         if (board) {
 628                 inspect_fw_phexpost("Hardware ID",
 629                                     BE32_TO_HOST(hdr->hw_id), board->id);
 630                 inspect_fw_phexexp("Hardware Revision",
 631                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 632         } else {
 633                 inspect_fw_phexpost("Hardware ID",
 634                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 635                 inspect_fw_phex("Hardware Revision",
 636                                 BE32_TO_HOST(hdr->hw_rev));
 637         }
 638
 639         printf("\n");
 640
 641         inspect_fw_phexdec("Kernel data offset",
 642                            BE32_TO_HOST(hdr->kernel_ofs));
 643         inspect_fw_phexdec("Kernel data length",
 644                            BE32_TO_HOST(hdr->kernel_len));
 645         if (board) {
 646                 inspect_fw_phexdef("Kernel load address",
 647                                    BE32_TO_HOST(hdr->kernel_la),
 648                                    board->kernel_la);
 649                 inspect_fw_phexdef("Kernel entry point",
 650                                    BE32_TO_HOST(hdr->kernel_ep),
 651                                    board->kernel_ep);
 652                 inspect_fw_phexdecdef("Rootfs data offset",
 653                                       BE32_TO_HOST(hdr->rootfs_ofs),
 654                                       board->rootfs_ofs);
 655         } else {
 656                 inspect_fw_phex("Kernel load address",
 657                                 BE32_TO_HOST(hdr->kernel_la));
 658                 inspect_fw_phex("Kernel entry point",
 659                                 BE32_TO_HOST(hdr->kernel_ep));
 660                 inspect_fw_phexdec("Rootfs data offset",
 661                                    BE32_TO_HOST(hdr->rootfs_ofs));
 662         }
 663         inspect_fw_phexdec("Rootfs data length",
 664                            BE32_TO_HOST(hdr->rootfs_len));
 665         inspect_fw_phexdec("Boot loader data offset",
 666                            BE32_TO_HOST(hdr->boot_ofs));
 667         inspect_fw_phexdec("Boot loader data length",
 668                            BE32_TO_HOST(hdr->boot_len));
 669         inspect_fw_phexdec("Total firmware length",
 670                            BE32_TO_HOST(hdr->fw_length));
 671
 672         if (extract) {
 673                 FILE *fp;
 674                 char *filename;
 675
 676                 printf("\n");
 677
 678                 filename = malloc(strlen(inspect_info.file_name) + 8);
 679                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 680                 printf("Extracting kernel to \"%s\"...\n", filename);
 681                 fp = fopen(filename, "w");
 682                 if (fp) {
 683                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 684                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 685                                 ERR("error in fwrite(): %s", strerror(errno));
 686                         }
 687                         fclose(fp);
 688                 } else {
 689                         ERR("error in fopen(): %s", strerror(errno));
 690                 }
 691                 free(filename);
 692
 693                 filename = malloc(strlen(inspect_info.file_name) + 8);
 694                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 695                 printf("Extracting rootfs to \"%s\"...\n", filename);
 696                 fp = fopen(filename, "w");
 697                 if (fp) {
 698                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 699                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 700                                 ERR("error in fwrite(): %s", strerror(errno));
 701                         }
 702                         fclose(fp);
 703                 } else {
 704                         ERR("error in fopen(): %s", strerror(errno));
 705                 }
 706                 free(filename);
 707         }
 708
 709  out_free_buf:
 710         free(buf);
 711  out:
 712         return ret;
 713 }
 714
 715 int main(int argc, char *argv[])
 716 {
 717         int ret = EXIT_FAILURE;
 718         int err;
 719
 720         FILE *outfile;
 721
 722         progname = basename(argv[0]);
 723
 724         while ( 1 ) {
 725                 int c;
 726
 727                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 728                 if (c == -1)
 729                         break;
 730
 731                 switch (c) {
 732                 case 'B':
 733                         board_id = optarg;
 734                         break;
 735                 case 'E':
 736                         sscanf(optarg, "0x%x", &kernel_ep);
 737                         break;
 738                 case 'L':
 739                         sscanf(optarg, "0x%x", &kernel_la);
 740                         break;
 741                 case 'V':
 742                         version = optarg;
 743                         break;
 744                 case 'N':
 745                         vendor = optarg;
 746                         break;
 747                 case 'c':
 748                         combined++;
 749                         break;
 750                 case 'k':
 751                         kernel_info.file_name = optarg;
 752                         break;
 753                 case 'r':
 754                         rootfs_info.file_name = optarg;
 755                         break;
 756                 case 'R':
 757                         sscanf(optarg, "0x%x", &rootfs_ofs);
 758                         break;
 759                 case 'o':
 760                         ofname = optarg;
 761                         break;
 762                 case 's':
 763                         strip_padding = 1;
 764                         break;
 765                 case 'i':
 766                         inspect_info.file_name = optarg;
 767                         break;
 768                 case 'x':
 769                         extract = 1;
 770                         break;
 771                 case 'h':
 772                         usage(EXIT_SUCCESS);
 773                         break;
 774                 default:
 775                         usage(EXIT_FAILURE);
 776                         break;
 777                 }
 778         }
 779
 780         ret = check_options();
 781         if (ret)
 782                 goto out;
 783
 784         if (!inspect_info.file_name)
 785                 ret = build_fw();
 786         else
 787                 ret = inspect_fw();
 788
 789  out:
 790         return ret;
 791 }
 792