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_MR3220_V1       0x32200001
  37 #define HWID_TL_MR3420_V1       0x34200001
  38 #define HWID_TL_WA901ND_V1      0x09010001
  39 #define HWID_TL_WR741ND_V1      0x07410001
  40 #define HWID_TL_WR740N_V1       0x07400001
  41 #define HWID_TL_WR841N_V1_5     0x08410002
  42 #define HWID_TL_WR841ND_V3      0x08410003
  43 #define HWID_TL_WR841ND_V5      0x08410005
  44 #define HWID_TL_WR841ND_V7      0x08410007
  45 #define HWID_TL_WR941ND_V2      0x09410002
  46 #define HWID_TL_WR941ND_V4      0x09410004
  47 #define HWID_TL_WR1043ND_V1     0x10430001
  48
  49 #define MD5SUM_LEN      16
  50
  51 struct file_info {
  52         char            *file_name;     /* name of the file */
  53         uint32_t        file_size;      /* length of the file */
  54 };
  55
  56 struct fw_header {
  57         uint32_t        version;        /* header version */
  58         char            vendor_name[24];
  59         char            fw_version[36];
  60         uint32_t        hw_id;          /* hardware id */
  61         uint32_t        hw_rev;         /* hardware revision */
  62         uint32_t        unk1;
  63         uint8_t         md5sum1[MD5SUM_LEN];
  64         uint32_t        unk2;
  65         uint8_t         md5sum2[MD5SUM_LEN];
  66         uint32_t        unk3;
  67         uint32_t        kernel_la;      /* kernel load address */
  68         uint32_t        kernel_ep;      /* kernel entry point */
  69         uint32_t        fw_length;      /* total length of the firmware */
  70         uint32_t        kernel_ofs;     /* kernel data offset */
  71         uint32_t        kernel_len;     /* kernel data length */
  72         uint32_t        rootfs_ofs;     /* rootfs data offset */
  73         uint32_t        rootfs_len;     /* rootfs data length */
  74         uint32_t        boot_ofs;       /* bootloader data offset */
  75         uint32_t        boot_len;       /* bootloader data length */
  76         uint8_t         pad[360];
  77 } __attribute__ ((packed));
  78
  79 struct board_info {
  80         char            *id;
  81         uint32_t        hw_id;
  82         uint32_t        hw_rev;
  83         uint32_t        fw_max_len;
  84         uint32_t        kernel_la;
  85         uint32_t        kernel_ep;
  86         uint32_t        rootfs_ofs;
  87 };
  88
  89 /*
  90  * Globals
  91  */
  92 static char *ofname;
  93 static char *progname;
  94 static char *vendor = "TP-LINK Technologies";
  95 static char *version = "ver. 1.0";
  96
  97 static char *board_id;
  98 static struct board_info *board;
  99 static struct file_info kernel_info;
 100 static uint32_t kernel_la = 0;
 101 static uint32_t kernel_ep = 0;
 102 static struct file_info rootfs_info;
 103 static uint32_t rootfs_ofs = 0;
 104 static struct file_info boot_info;
 105 static int combined;
 106 static int strip_padding;
 107
 108 static struct file_info inspect_info;
 109 static int extract = 0;
 110
 111 char md5salt_normal[MD5SUM_LEN] = {
 112         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 113         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 114 };
 115
 116 char md5salt_boot[MD5SUM_LEN] = {
 117         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 118         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 119 };
 120
 121 static struct board_info boards[] = {
 122         {
 123                 .id             = "TL-MR3220v1",
 124                 .hw_id          = HWID_TL_MR3220_V1,
 125                 .hw_rev         = 1,
 126                 .fw_max_len     = 0x3c0000,
 127                 .kernel_la      = 0x80060000,
 128                 .kernel_ep      = 0x80060000,
 129                 .rootfs_ofs     = 0x140000,
 130         }, {
 131                 .id             = "TL-MR3420v1",
 132                 .hw_id          = HWID_TL_MR3420_V1,
 133                 .hw_rev         = 1,
 134                 .fw_max_len     = 0x3c0000,
 135                 .kernel_la      = 0x80060000,
 136                 .kernel_ep      = 0x80060000,
 137                 .rootfs_ofs     = 0x140000,
 138         }, {
 139                 .id             = "TL-WA901NDv1",
 140                 .hw_id          = HWID_TL_WA901ND_V1,
 141                 .hw_rev         = 1,
 142                 .fw_max_len     = 0x3c0000,
 143                 .kernel_la      = 0x80060000,
 144                 .kernel_ep      = 0x80060000,
 145                 .rootfs_ofs     = 0x140000,
 146         }, {
 147                 .id             = "TL-WR741NDv1",
 148                 .hw_id          = HWID_TL_WR741ND_V1,
 149                 .hw_rev         = 1,
 150                 .fw_max_len     = 0x3c0000,
 151                 .kernel_la      = 0x80060000,
 152                 .kernel_ep      = 0x80060000,
 153                 .rootfs_ofs     = 0x140000,
 154         }, {
 155                 .id             = "TL-WR740Nv1",
 156                 .hw_id          = HWID_TL_WR740N_V1,
 157                 .hw_rev         = 1,
 158                 .fw_max_len     = 0x3c0000,
 159                 .kernel_la      = 0x80060000,
 160                 .kernel_ep      = 0x80060000,
 161                 .rootfs_ofs     = 0x140000,
 162         }, {
 163                 .id             = "TL-WR841Nv1.5",
 164                 .hw_id          = HWID_TL_WR841N_V1_5,
 165                 .hw_rev         = 2,
 166                 .fw_max_len     = 0x3c0000,
 167                 .kernel_la      = 0x80060000,
 168                 .kernel_ep      = 0x80060000,
 169                 .rootfs_ofs     = 0x140000,
 170         }, {
 171                 .id             = "TL-WR841NDv3",
 172                 .hw_id          = HWID_TL_WR841ND_V3,
 173                 .hw_rev         = 3,
 174                 .fw_max_len     = 0x3c0000,
 175                 .kernel_la      = 0x80060000,
 176                 .kernel_ep      = 0x80060000,
 177                 .rootfs_ofs     = 0x140000,
 178         }, {
 179                 .id             = "TL-WR841NDv5",
 180                 .hw_id          = HWID_TL_WR841ND_V5,
 181                 .hw_rev         = 1,
 182                 .fw_max_len     = 0x3c0000,
 183                 .kernel_la      = 0x80060000,
 184                 .kernel_ep      = 0x80060000,
 185                 .rootfs_ofs     = 0x140000,
 186         }, {
 187                 .id             = "TL-WR841NDv7",
 188                 .hw_id          = HWID_TL_WR841ND_V7,
 189                 .hw_rev         = 1,
 190                 .fw_max_len     = 0x3c0000,
 191                 .kernel_la      = 0x80060000,
 192                 .kernel_ep      = 0x80060000,
 193                 .rootfs_ofs     = 0x140000,
 194         }, {
 195                 .id             = "TL-WR941NDv2",
 196                 .hw_id          = HWID_TL_WR941ND_V2,
 197                 .hw_rev         = 2,
 198                 .fw_max_len     = 0x3c0000,
 199                 .kernel_la      = 0x80060000,
 200                 .kernel_ep      = 0x80060000,
 201                 .rootfs_ofs     = 0x140000,
 202         }, {
 203                 .id             = "TL-WR941NDv4",
 204                 .hw_id          = HWID_TL_WR941ND_V4,
 205                 .hw_rev         = 1,
 206                 .fw_max_len     = 0x3c0000,
 207                 .kernel_la      = 0x80060000,
 208                 .kernel_ep      = 0x80060000,
 209                 .rootfs_ofs     = 0x140000,
 210         }, {
 211                 .id             = "TL-WR1043NDv1",
 212                 .hw_id          = HWID_TL_WR1043ND_V1,
 213                 .hw_rev         = 1,
 214                 .fw_max_len     = 0x7c0000,
 215                 .kernel_la      = 0x80060000,
 216                 .kernel_ep      = 0x80060000,
 217                 .rootfs_ofs     = 0x140000,
 218         }, {
 219                 /* terminating entry */
 220         }
 221 };
 222
 223 /*
 224  * Message macros
 225  */
 226 #define ERR(fmt, ...) do { \
 227         fflush(0); \
 228         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 229                         progname, ## __VA_ARGS__ ); \
 230 } while (0)
 231
 232 #define ERRS(fmt, ...) do { \
 233         int save = errno; \
 234         fflush(0); \
 235         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 236                         progname, ## __VA_ARGS__, strerror(save)); \
 237 } while (0)
 238
 239 #define DBG(fmt, ...) do { \
 240         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 241 } while (0)
 242
 243 static struct board_info *find_board(char *id)
 244 {
 245         struct board_info *ret;
 246         struct board_info *board;
 247
 248         ret = NULL;
 249         for (board = boards; board->id != NULL; board++){
 250                 if (strcasecmp(id, board->id) == 0) {
 251                         ret = board;
 252                         break;
 253                 }
 254         };
 255
 256         return ret;
 257 }
 258
 259 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 260 {
 261         struct board_info *board;
 262
 263         for (board = boards; board->id != NULL; board++) {
 264                 if (hw_id == board->hw_id)
 265                         return board;
 266         };
 267
 268         return NULL;
 269 }
 270
 271
 272 static void usage(int status)
 273 {
 274         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 275         struct board_info *board;
 276
 277         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 278         fprintf(stream,
 279 "\n"
 280 "Options:\n"
 281 "  -B <board>      create image for the board specified with <board>\n"
 282 "  -c              use combined kernel image\n"
 283 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 284 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 285 "  -k <file>       read kernel image from the file <file>\n"
 286 "  -r <file>       read rootfs image from the file <file>\n"
 287 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 288 "  -o <file>       write output to the file <file>\n"
 289 "  -s              strip padding from the end of the image\n"
 290 "  -N <vendor>     set image vendor to <vendor>\n"
 291 "  -V <version>    set image version to <version>\n"
 292 "  -i <file>       inspect given firmware file <file>\n"
 293 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 294 "  -h              show this screen\n"
 295         );
 296
 297         exit(status);
 298 }
 299
 300 static int get_md5(char *data, int size, char *md5)
 301 {
 302         MD5_CTX ctx;
 303
 304         MD5_Init(&ctx);
 305         MD5_Update(&ctx, data, size);
 306         MD5_Final(md5, &ctx);
 307 }
 308
 309 static int get_file_stat(struct file_info *fdata)
 310 {
 311         struct stat st;
 312         int res;
 313
 314         if (fdata->file_name == NULL)
 315                 return 0;
 316
 317         res = stat(fdata->file_name, &st);
 318         if (res){
 319                 ERRS("stat failed on %s", fdata->file_name);
 320                 return res;
 321         }
 322
 323         fdata->file_size = st.st_size;
 324         return 0;
 325 }
 326
 327 static int read_to_buf(struct file_info *fdata, char *buf)
 328 {
 329         FILE *f;
 330         int ret = EXIT_FAILURE;
 331
 332         f = fopen(fdata->file_name, "r");
 333         if (f == NULL) {
 334                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 335                 goto out;
 336         }
 337
 338         errno = 0;
 339         fread(buf, fdata->file_size, 1, f);
 340         if (errno != 0) {
 341                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 342                 goto out_close;
 343         }
 344
 345         ret = EXIT_SUCCESS;
 346
 347  out_close:
 348         fclose(f);
 349  out:
 350         return ret;
 351 }
 352
 353 static int check_options(void)
 354 {
 355         int ret;
 356
 357         if (inspect_info.file_name) {
 358                 ret = get_file_stat(&inspect_info);
 359                 if (ret)
 360                         return ret;
 361
 362                 return 0;
 363         } else if (extract) {
 364                 ERR("no firmware for inspection specified");
 365                 return -1;
 366         }
 367
 368         if (board_id == NULL) {
 369                 ERR("no board specified");
 370                 return -1;
 371         }
 372
 373         board = find_board(board_id);
 374         if (board == NULL) {
 375                 ERR("unknown/unsupported board id \"%s\"", board_id);
 376                 return -1;
 377         }
 378         if (!kernel_la)
 379                 kernel_la = board->kernel_la;
 380         if (!kernel_ep)
 381                 kernel_ep = board->kernel_ep;
 382         if (!rootfs_ofs)
 383                 rootfs_ofs = board->rootfs_ofs;
 384
 385         if (kernel_info.file_name == NULL) {
 386                 ERR("no kernel image specified");
 387                 return -1;
 388         }
 389
 390         ret = get_file_stat(&kernel_info);
 391         if (ret)
 392                 return ret;
 393
 394         if (combined) {
 395                 if (kernel_info.file_size >
 396                     board->fw_max_len - sizeof(struct fw_header)) {
 397                         ERR("kernel image is too big");
 398                         return -1;
 399                 }
 400         } else {
 401                 if (kernel_info.file_size >
 402                     rootfs_ofs - sizeof(struct fw_header)) {
 403                         ERR("kernel image is too big");
 404                         return -1;
 405                 }
 406                 if (rootfs_info.file_name == NULL) {
 407                         ERR("no rootfs image specified");
 408                         return -1;
 409                 }
 410
 411                 ret = get_file_stat(&rootfs_info);
 412                 if (ret)
 413                         return ret;
 414
 415                 if (rootfs_info.file_size >
 416                     (board->fw_max_len - rootfs_ofs)) {
 417                         ERR("rootfs image is too big");
 418                         return -1;
 419                 }
 420         }
 421
 422         if (ofname == NULL) {
 423                 ERR("no output file specified");
 424                 return -1;
 425         }
 426
 427         return 0;
 428 }
 429
 430 static void fill_header(char *buf, int len)
 431 {
 432         struct fw_header *hdr = (struct fw_header *)buf;
 433
 434         memset(hdr, 0, sizeof(struct fw_header));
 435
 436         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 437         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 438         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 439         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 440         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 441
 442         if (boot_info.file_size == 0)
 443                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 444         else
 445                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 446
 447         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 448         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 449         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 450         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 451         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 452         if (!combined) {
 453                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 454                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 455         }
 456
 457         get_md5(buf, len, hdr->md5sum1);
 458 }
 459
 460 static int write_fw(char *data, int len)
 461 {
 462         FILE *f;
 463         int ret = EXIT_FAILURE;
 464
 465         f = fopen(ofname, "w");
 466         if (f == NULL) {
 467                 ERRS("could not open \"%s\" for writing", ofname);
 468                 goto out;
 469         }
 470
 471         errno = 0;
 472         fwrite(data, len, 1, f);
 473         if (errno) {
 474                 ERRS("unable to write output file");
 475                 goto out_flush;
 476         }
 477
 478         DBG("firmware file \"%s\" completed", ofname);
 479
 480         ret = EXIT_SUCCESS;
 481
 482  out_flush:
 483         fflush(f);
 484         fclose(f);
 485         if (ret != EXIT_SUCCESS) {
 486                 unlink(ofname);
 487         }
 488  out:
 489         return ret;
 490 }
 491
 492 static int build_fw(void)
 493 {
 494         int buflen;
 495         char *buf;
 496         char *p;
 497         int ret = EXIT_FAILURE;
 498         int writelen = 0;
 499
 500         buflen = board->fw_max_len;
 501
 502         buf = malloc(buflen);
 503         if (!buf) {
 504                 ERR("no memory for buffer\n");
 505                 goto out;
 506         }
 507
 508         memset(buf, 0xff, buflen);
 509         p = buf + sizeof(struct fw_header);
 510         ret = read_to_buf(&kernel_info, p);
 511         if (ret)
 512                 goto out_free_buf;
 513
 514         writelen = kernel_info.file_size;
 515
 516         if (!combined) {
 517                 p = buf + rootfs_ofs;
 518                 ret = read_to_buf(&rootfs_info, p);
 519                 if (ret)
 520                         goto out_free_buf;
 521
 522                 writelen = rootfs_ofs + rootfs_info.file_size;
 523         }
 524
 525         if (!strip_padding)
 526                 writelen = buflen;
 527
 528         fill_header(buf, writelen);
 529         ret = write_fw(buf, writelen);
 530         if (ret)
 531                 goto out_free_buf;
 532
 533         ret = EXIT_SUCCESS;
 534
 535  out_free_buf:
 536         free(buf);
 537  out:
 538         return ret;
 539 }
 540
 541 /* Helper functions to inspect_fw() representing different output formats */
 542 static inline void inspect_fw_pstr(char *label, char *str)
 543 {
 544         printf("%-23s: %s\n", label, str);
 545 }
 546
 547 static inline void inspect_fw_phex(char *label, uint32_t val)
 548 {
 549         printf("%-23s: 0x%08x\n", label, val);
 550 }
 551
 552 static inline void inspect_fw_phexpost(char *label,
 553                                        uint32_t val, char *post)
 554 {
 555         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 556 }
 557
 558 static inline void inspect_fw_phexdef(char *label,
 559                                       uint32_t val, uint32_t defval)
 560 {
 561         printf("%-23s: 0x%08x                  ", label, 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_phexexp(char *label,
 570                                       uint32_t val, uint32_t expval)
 571 {
 572         printf("%-23s: 0x%08x ", label, val);
 573
 574         if (val == expval)
 575                 printf("(ok)\n");
 576         else
 577                 printf("(expected: 0x%08x)\n", expval);
 578 }
 579
 580 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 581 {
 582         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 583 }
 584
 585 static inline void inspect_fw_phexdecdef(char *label,
 586                                          uint32_t val, uint32_t defval)
 587 {
 588         printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
 589
 590         if (val == defval)
 591                 printf("(== OpenWrt default)\n");
 592         else
 593                 printf("(OpenWrt default: 0x%08x)\n", defval);
 594 }
 595
 596 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
 597 {
 598         int i;
 599
 600         printf("%-23s:", label);
 601         for (i=0; i<MD5SUM_LEN; i++)
 602                 printf(" %02x", val[i]);
 603         printf(" %s\n", text);
 604 }
 605
 606 static int inspect_fw(void)
 607 {
 608         char *buf;
 609         struct fw_header *hdr;
 610         uint8_t md5sum[MD5SUM_LEN];
 611         struct board_info *board;
 612         int ret = EXIT_FAILURE;
 613
 614         buf = malloc(inspect_info.file_size);
 615         if (!buf) {
 616                 ERR("no memory for buffer!\n");
 617                 goto out;
 618         }
 619
 620         ret = read_to_buf(&inspect_info, buf);
 621         if (ret)
 622                 goto out_free_buf;
 623         hdr = (struct fw_header *)buf;
 624
 625         inspect_fw_pstr("File name", inspect_info.file_name);
 626         inspect_fw_phexdec("File size", inspect_info.file_size);
 627
 628         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 629                 ERR("file does not seem to have V1 header!\n");
 630                 goto out_free_buf;
 631         }
 632
 633         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 634
 635         if (BE32_TO_HOST(hdr->unk1) != 0)
 636                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 637
 638         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 639         if (BE32_TO_HOST(hdr->boot_len) == 0)
 640                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 641         else
 642                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 643         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 644
 645         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 646                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 647                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 648         } else {
 649                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 650         }
 651         if (BE32_TO_HOST(hdr->unk2) != 0)
 652                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 653         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 654                            "(purpose yet unknown, unchecked here)");
 655         if (BE32_TO_HOST(hdr->unk3) != 0)
 656                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 657
 658         printf("\n");
 659
 660         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 661         inspect_fw_pstr("Firmware version", hdr->fw_version);
 662         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 663         if (board) {
 664                 inspect_fw_phexpost("Hardware ID",
 665                                     BE32_TO_HOST(hdr->hw_id), board->id);
 666                 inspect_fw_phexexp("Hardware Revision",
 667                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 668         } else {
 669                 inspect_fw_phexpost("Hardware ID",
 670                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 671                 inspect_fw_phex("Hardware Revision",
 672                                 BE32_TO_HOST(hdr->hw_rev));
 673         }
 674
 675         printf("\n");
 676
 677         inspect_fw_phexdec("Kernel data offset",
 678                            BE32_TO_HOST(hdr->kernel_ofs));
 679         inspect_fw_phexdec("Kernel data length",
 680                            BE32_TO_HOST(hdr->kernel_len));
 681         if (board) {
 682                 inspect_fw_phexdef("Kernel load address",
 683                                    BE32_TO_HOST(hdr->kernel_la),
 684                                    board->kernel_la);
 685                 inspect_fw_phexdef("Kernel entry point",
 686                                    BE32_TO_HOST(hdr->kernel_ep),
 687                                    board->kernel_ep);
 688                 inspect_fw_phexdecdef("Rootfs data offset",
 689                                       BE32_TO_HOST(hdr->rootfs_ofs),
 690                                       board->rootfs_ofs);
 691         } else {
 692                 inspect_fw_phex("Kernel load address",
 693                                 BE32_TO_HOST(hdr->kernel_la));
 694                 inspect_fw_phex("Kernel entry point",
 695                                 BE32_TO_HOST(hdr->kernel_ep));
 696                 inspect_fw_phexdec("Rootfs data offset",
 697                                    BE32_TO_HOST(hdr->rootfs_ofs));
 698         }
 699         inspect_fw_phexdec("Rootfs data length",
 700                            BE32_TO_HOST(hdr->rootfs_len));
 701         inspect_fw_phexdec("Boot loader data offset",
 702                            BE32_TO_HOST(hdr->boot_ofs));
 703         inspect_fw_phexdec("Boot loader data length",
 704                            BE32_TO_HOST(hdr->boot_len));
 705         inspect_fw_phexdec("Total firmware length",
 706                            BE32_TO_HOST(hdr->fw_length));
 707
 708         if (extract) {
 709                 FILE *fp;
 710                 char *filename;
 711
 712                 printf("\n");
 713
 714                 filename = malloc(strlen(inspect_info.file_name) + 8);
 715                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 716                 printf("Extracting kernel to \"%s\"...\n", filename);
 717                 fp = fopen(filename, "w");
 718                 if (fp) {
 719                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 720                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 721                                 ERR("error in fwrite(): %s", strerror(errno));
 722                         }
 723                         fclose(fp);
 724                 } else {
 725                         ERR("error in fopen(): %s", strerror(errno));
 726                 }
 727                 free(filename);
 728
 729                 filename = malloc(strlen(inspect_info.file_name) + 8);
 730                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 731                 printf("Extracting rootfs to \"%s\"...\n", filename);
 732                 fp = fopen(filename, "w");
 733                 if (fp) {
 734                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 735                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 736                                 ERR("error in fwrite(): %s", strerror(errno));
 737                         }
 738                         fclose(fp);
 739                 } else {
 740                         ERR("error in fopen(): %s", strerror(errno));
 741                 }
 742                 free(filename);
 743         }
 744
 745  out_free_buf:
 746         free(buf);
 747  out:
 748         return ret;
 749 }
 750
 751 int main(int argc, char *argv[])
 752 {
 753         int ret = EXIT_FAILURE;
 754         int err;
 755
 756         FILE *outfile;
 757
 758         progname = basename(argv[0]);
 759
 760         while ( 1 ) {
 761                 int c;
 762
 763                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 764                 if (c == -1)
 765                         break;
 766
 767                 switch (c) {
 768                 case 'B':
 769                         board_id = optarg;
 770                         break;
 771                 case 'E':
 772                         sscanf(optarg, "0x%x", &kernel_ep);
 773                         break;
 774                 case 'L':
 775                         sscanf(optarg, "0x%x", &kernel_la);
 776                         break;
 777                 case 'V':
 778                         version = optarg;
 779                         break;
 780                 case 'N':
 781                         vendor = optarg;
 782                         break;
 783                 case 'c':
 784                         combined++;
 785                         break;
 786                 case 'k':
 787                         kernel_info.file_name = optarg;
 788                         break;
 789                 case 'r':
 790                         rootfs_info.file_name = optarg;
 791                         break;
 792                 case 'R':
 793                         sscanf(optarg, "0x%x", &rootfs_ofs);
 794                         break;
 795                 case 'o':
 796                         ofname = optarg;
 797                         break;
 798                 case 's':
 799                         strip_padding = 1;
 800                         break;
 801                 case 'i':
 802                         inspect_info.file_name = optarg;
 803                         break;
 804                 case 'x':
 805                         extract = 1;
 806                         break;
 807                 case 'h':
 808                         usage(EXIT_SUCCESS);
 809                         break;
 810                 default:
 811                         usage(EXIT_FAILURE);
 812                         break;
 813                 }
 814         }
 815
 816         ret = check_options();
 817         if (ret)
 818                 goto out;
 819
 820         if (!inspect_info.file_name)
 821                 ret = build_fw();
 822         else
 823                 ret = inspect_fw();
 824
 825  out:
 826         return ret;
 827 }
 828