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_WA901ND_V2      0x09010002
  40 #define HWID_TL_WR741ND_V1      0x07410001
  41 #define HWID_TL_WR740N_V1       0x07400001
  42 #define HWID_TL_WR740N_V3       0x07400300
  43 #define HWID_TL_WR743ND_V1      0x07430001
  44 #define HWID_TL_WR841N_V1_5     0x08410002
  45 #define HWID_TL_WR841ND_V3      0x08410003
  46 #define HWID_TL_WR841ND_V5      0x08410005
  47 #define HWID_TL_WR841ND_V7      0x08410007
  48 #define HWID_TL_WR941ND_V2      0x09410002
  49 #define HWID_TL_WR941ND_V4      0x09410004
  50 #define HWID_TL_WR1043ND_V1     0x10430001
  51
  52 #define MD5SUM_LEN      16
  53
  54 struct file_info {
  55         char            *file_name;     /* name of the file */
  56         uint32_t        file_size;      /* length of the file */
  57 };
  58
  59 struct fw_header {
  60         uint32_t        version;        /* header version */
  61         char            vendor_name[24];
  62         char            fw_version[36];
  63         uint32_t        hw_id;          /* hardware id */
  64         uint32_t        hw_rev;         /* hardware revision */
  65         uint32_t        unk1;
  66         uint8_t         md5sum1[MD5SUM_LEN];
  67         uint32_t        unk2;
  68         uint8_t         md5sum2[MD5SUM_LEN];
  69         uint32_t        unk3;
  70         uint32_t        kernel_la;      /* kernel load address */
  71         uint32_t        kernel_ep;      /* kernel entry point */
  72         uint32_t        fw_length;      /* total length of the firmware */
  73         uint32_t        kernel_ofs;     /* kernel data offset */
  74         uint32_t        kernel_len;     /* kernel data length */
  75         uint32_t        rootfs_ofs;     /* rootfs data offset */
  76         uint32_t        rootfs_len;     /* rootfs data length */
  77         uint32_t        boot_ofs;       /* bootloader data offset */
  78         uint32_t        boot_len;       /* bootloader data length */
  79         uint8_t         pad[360];
  80 } __attribute__ ((packed));
  81
  82 struct board_info {
  83         char            *id;
  84         uint32_t        hw_id;
  85         uint32_t        hw_rev;
  86         uint32_t        fw_max_len;
  87         uint32_t        kernel_la;
  88         uint32_t        kernel_ep;
  89         uint32_t        rootfs_ofs;
  90 };
  91
  92 /*
  93  * Globals
  94  */
  95 static char *ofname;
  96 static char *progname;
  97 static char *vendor = "TP-LINK Technologies";
  98 static char *version = "ver. 1.0";
  99
 100 static char *board_id;
 101 static struct board_info *board;
 102 static struct file_info kernel_info;
 103 static uint32_t kernel_la = 0;
 104 static uint32_t kernel_ep = 0;
 105 static struct file_info rootfs_info;
 106 static uint32_t rootfs_ofs = 0;
 107 static struct file_info boot_info;
 108 static int combined;
 109 static int strip_padding;
 110
 111 static struct file_info inspect_info;
 112 static int extract = 0;
 113
 114 char md5salt_normal[MD5SUM_LEN] = {
 115         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 116         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 117 };
 118
 119 char md5salt_boot[MD5SUM_LEN] = {
 120         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 121         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 122 };
 123
 124 static struct board_info boards[] = {
 125         {
 126                 .id             = "TL-MR3220v1",
 127                 .hw_id          = HWID_TL_MR3220_V1,
 128                 .hw_rev         = 1,
 129                 .fw_max_len     = 0x3c0000,
 130                 .kernel_la      = 0x80060000,
 131                 .kernel_ep      = 0x80060000,
 132                 .rootfs_ofs     = 0x140000,
 133         }, {
 134                 .id             = "TL-MR3420v1",
 135                 .hw_id          = HWID_TL_MR3420_V1,
 136                 .hw_rev         = 1,
 137                 .fw_max_len     = 0x3c0000,
 138                 .kernel_la      = 0x80060000,
 139                 .kernel_ep      = 0x80060000,
 140                 .rootfs_ofs     = 0x140000,
 141         }, {
 142                 .id             = "TL-WA901NDv1",
 143                 .hw_id          = HWID_TL_WA901ND_V1,
 144                 .hw_rev         = 1,
 145                 .fw_max_len     = 0x3c0000,
 146                 .kernel_la      = 0x80060000,
 147                 .kernel_ep      = 0x80060000,
 148                 .rootfs_ofs     = 0x140000,
 149         }, {
 150                 .id             = "TL-WA901NDv2",
 151                 .hw_id          = HWID_TL_WA901ND_V2,
 152                 .hw_rev         = 1,
 153                 .fw_max_len     = 0x3c0000,
 154                 .kernel_la      = 0x80060000,
 155                 .kernel_ep      = 0x80060000,
 156                 .rootfs_ofs     = 0x140000,
 157         }, {
 158                 .id             = "TL-WR741NDv1",
 159                 .hw_id          = HWID_TL_WR741ND_V1,
 160                 .hw_rev         = 1,
 161                 .fw_max_len     = 0x3c0000,
 162                 .kernel_la      = 0x80060000,
 163                 .kernel_ep      = 0x80060000,
 164                 .rootfs_ofs     = 0x140000,
 165         }, {
 166                 .id             = "TL-WR740Nv1",
 167                 .hw_id          = HWID_TL_WR740N_V1,
 168                 .hw_rev         = 1,
 169                 .fw_max_len     = 0x3c0000,
 170                 .kernel_la      = 0x80060000,
 171                 .kernel_ep      = 0x80060000,
 172                 .rootfs_ofs     = 0x140000,
 173         }, {
 174                 .id             = "TL-WR740Nv3",
 175                 .hw_id          = HWID_TL_WR740N_V3,
 176                 .hw_rev         = 1,
 177                 .fw_max_len     = 0x3c0000,
 178                 .kernel_la      = 0x80060000,
 179                 .kernel_ep      = 0x80060000,
 180                 .rootfs_ofs     = 0x140000,
 181         }, {
 182                 .id             = "TL-WR743NDv1",
 183                 .hw_id          = HWID_TL_WR743ND_V1,
 184                 .hw_rev         = 1,
 185                 .fw_max_len     = 0x3c0000,
 186                 .kernel_la      = 0x80060000,
 187                 .kernel_ep      = 0x80060000,
 188                 .rootfs_ofs     = 0x140000,
 189         }, {
 190                 .id             = "TL-WR841Nv1.5",
 191                 .hw_id          = HWID_TL_WR841N_V1_5,
 192                 .hw_rev         = 2,
 193                 .fw_max_len     = 0x3c0000,
 194                 .kernel_la      = 0x80060000,
 195                 .kernel_ep      = 0x80060000,
 196                 .rootfs_ofs     = 0x140000,
 197         }, {
 198                 .id             = "TL-WR841NDv3",
 199                 .hw_id          = HWID_TL_WR841ND_V3,
 200                 .hw_rev         = 3,
 201                 .fw_max_len     = 0x3c0000,
 202                 .kernel_la      = 0x80060000,
 203                 .kernel_ep      = 0x80060000,
 204                 .rootfs_ofs     = 0x140000,
 205         }, {
 206                 .id             = "TL-WR841NDv5",
 207                 .hw_id          = HWID_TL_WR841ND_V5,
 208                 .hw_rev         = 1,
 209                 .fw_max_len     = 0x3c0000,
 210                 .kernel_la      = 0x80060000,
 211                 .kernel_ep      = 0x80060000,
 212                 .rootfs_ofs     = 0x140000,
 213         }, {
 214                 .id             = "TL-WR841NDv7",
 215                 .hw_id          = HWID_TL_WR841ND_V7,
 216                 .hw_rev         = 1,
 217                 .fw_max_len     = 0x3c0000,
 218                 .kernel_la      = 0x80060000,
 219                 .kernel_ep      = 0x80060000,
 220                 .rootfs_ofs     = 0x140000,
 221         }, {
 222                 .id             = "TL-WR941NDv2",
 223                 .hw_id          = HWID_TL_WR941ND_V2,
 224                 .hw_rev         = 2,
 225                 .fw_max_len     = 0x3c0000,
 226                 .kernel_la      = 0x80060000,
 227                 .kernel_ep      = 0x80060000,
 228                 .rootfs_ofs     = 0x140000,
 229         }, {
 230                 .id             = "TL-WR941NDv4",
 231                 .hw_id          = HWID_TL_WR941ND_V4,
 232                 .hw_rev         = 1,
 233                 .fw_max_len     = 0x3c0000,
 234                 .kernel_la      = 0x80060000,
 235                 .kernel_ep      = 0x80060000,
 236                 .rootfs_ofs     = 0x140000,
 237         }, {
 238                 .id             = "TL-WR1043NDv1",
 239                 .hw_id          = HWID_TL_WR1043ND_V1,
 240                 .hw_rev         = 1,
 241                 .fw_max_len     = 0x7c0000,
 242                 .kernel_la      = 0x80060000,
 243                 .kernel_ep      = 0x80060000,
 244                 .rootfs_ofs     = 0x140000,
 245         }, {
 246                 /* terminating entry */
 247         }
 248 };
 249
 250 /*
 251  * Message macros
 252  */
 253 #define ERR(fmt, ...) do { \
 254         fflush(0); \
 255         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 256                         progname, ## __VA_ARGS__ ); \
 257 } while (0)
 258
 259 #define ERRS(fmt, ...) do { \
 260         int save = errno; \
 261         fflush(0); \
 262         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 263                         progname, ## __VA_ARGS__, strerror(save)); \
 264 } while (0)
 265
 266 #define DBG(fmt, ...) do { \
 267         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 268 } while (0)
 269
 270 static struct board_info *find_board(char *id)
 271 {
 272         struct board_info *ret;
 273         struct board_info *board;
 274
 275         ret = NULL;
 276         for (board = boards; board->id != NULL; board++){
 277                 if (strcasecmp(id, board->id) == 0) {
 278                         ret = board;
 279                         break;
 280                 }
 281         };
 282
 283         return ret;
 284 }
 285
 286 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 287 {
 288         struct board_info *board;
 289
 290         for (board = boards; board->id != NULL; board++) {
 291                 if (hw_id == board->hw_id)
 292                         return board;
 293         };
 294
 295         return NULL;
 296 }
 297
 298
 299 static void usage(int status)
 300 {
 301         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 302         struct board_info *board;
 303
 304         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 305         fprintf(stream,
 306 "\n"
 307 "Options:\n"
 308 "  -B <board>      create image for the board specified with <board>\n"
 309 "  -c              use combined kernel image\n"
 310 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 311 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 312 "  -k <file>       read kernel image from the file <file>\n"
 313 "  -r <file>       read rootfs image from the file <file>\n"
 314 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 315 "  -o <file>       write output to the file <file>\n"
 316 "  -s              strip padding from the end of the image\n"
 317 "  -N <vendor>     set image vendor to <vendor>\n"
 318 "  -V <version>    set image version to <version>\n"
 319 "  -i <file>       inspect given firmware file <file>\n"
 320 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 321 "  -h              show this screen\n"
 322         );
 323
 324         exit(status);
 325 }
 326
 327 static int get_md5(char *data, int size, char *md5)
 328 {
 329         MD5_CTX ctx;
 330
 331         MD5_Init(&ctx);
 332         MD5_Update(&ctx, data, size);
 333         MD5_Final(md5, &ctx);
 334 }
 335
 336 static int get_file_stat(struct file_info *fdata)
 337 {
 338         struct stat st;
 339         int res;
 340
 341         if (fdata->file_name == NULL)
 342                 return 0;
 343
 344         res = stat(fdata->file_name, &st);
 345         if (res){
 346                 ERRS("stat failed on %s", fdata->file_name);
 347                 return res;
 348         }
 349
 350         fdata->file_size = st.st_size;
 351         return 0;
 352 }
 353
 354 static int read_to_buf(struct file_info *fdata, char *buf)
 355 {
 356         FILE *f;
 357         int ret = EXIT_FAILURE;
 358
 359         f = fopen(fdata->file_name, "r");
 360         if (f == NULL) {
 361                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 362                 goto out;
 363         }
 364
 365         errno = 0;
 366         fread(buf, fdata->file_size, 1, f);
 367         if (errno != 0) {
 368                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 369                 goto out_close;
 370         }
 371
 372         ret = EXIT_SUCCESS;
 373
 374  out_close:
 375         fclose(f);
 376  out:
 377         return ret;
 378 }
 379
 380 static int check_options(void)
 381 {
 382         int ret;
 383
 384         if (inspect_info.file_name) {
 385                 ret = get_file_stat(&inspect_info);
 386                 if (ret)
 387                         return ret;
 388
 389                 return 0;
 390         } else if (extract) {
 391                 ERR("no firmware for inspection specified");
 392                 return -1;
 393         }
 394
 395         if (board_id == NULL) {
 396                 ERR("no board specified");
 397                 return -1;
 398         }
 399
 400         board = find_board(board_id);
 401         if (board == NULL) {
 402                 ERR("unknown/unsupported board id \"%s\"", board_id);
 403                 return -1;
 404         }
 405         if (!kernel_la)
 406                 kernel_la = board->kernel_la;
 407         if (!kernel_ep)
 408                 kernel_ep = board->kernel_ep;
 409         if (!rootfs_ofs)
 410                 rootfs_ofs = board->rootfs_ofs;
 411
 412         if (kernel_info.file_name == NULL) {
 413                 ERR("no kernel image specified");
 414                 return -1;
 415         }
 416
 417         ret = get_file_stat(&kernel_info);
 418         if (ret)
 419                 return ret;
 420
 421         if (combined) {
 422                 if (kernel_info.file_size >
 423                     board->fw_max_len - sizeof(struct fw_header)) {
 424                         ERR("kernel image is too big");
 425                         return -1;
 426                 }
 427         } else {
 428                 if (kernel_info.file_size >
 429                     rootfs_ofs - sizeof(struct fw_header)) {
 430                         ERR("kernel image is too big");
 431                         return -1;
 432                 }
 433                 if (rootfs_info.file_name == NULL) {
 434                         ERR("no rootfs image specified");
 435                         return -1;
 436                 }
 437
 438                 ret = get_file_stat(&rootfs_info);
 439                 if (ret)
 440                         return ret;
 441
 442                 if (rootfs_info.file_size >
 443                     (board->fw_max_len - rootfs_ofs)) {
 444                         ERR("rootfs image is too big");
 445                         return -1;
 446                 }
 447         }
 448
 449         if (ofname == NULL) {
 450                 ERR("no output file specified");
 451                 return -1;
 452         }
 453
 454         return 0;
 455 }
 456
 457 static void fill_header(char *buf, int len)
 458 {
 459         struct fw_header *hdr = (struct fw_header *)buf;
 460
 461         memset(hdr, 0, sizeof(struct fw_header));
 462
 463         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 464         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 465         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 466         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 467         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 468
 469         if (boot_info.file_size == 0)
 470                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 471         else
 472                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 473
 474         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 475         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 476         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 477         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 478         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 479         if (!combined) {
 480                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 481                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 482         }
 483
 484         get_md5(buf, len, hdr->md5sum1);
 485 }
 486
 487 static int write_fw(char *data, int len)
 488 {
 489         FILE *f;
 490         int ret = EXIT_FAILURE;
 491
 492         f = fopen(ofname, "w");
 493         if (f == NULL) {
 494                 ERRS("could not open \"%s\" for writing", ofname);
 495                 goto out;
 496         }
 497
 498         errno = 0;
 499         fwrite(data, len, 1, f);
 500         if (errno) {
 501                 ERRS("unable to write output file");
 502                 goto out_flush;
 503         }
 504
 505         DBG("firmware file \"%s\" completed", ofname);
 506
 507         ret = EXIT_SUCCESS;
 508
 509  out_flush:
 510         fflush(f);
 511         fclose(f);
 512         if (ret != EXIT_SUCCESS) {
 513                 unlink(ofname);
 514         }
 515  out:
 516         return ret;
 517 }
 518
 519 static int build_fw(void)
 520 {
 521         int buflen;
 522         char *buf;
 523         char *p;
 524         int ret = EXIT_FAILURE;
 525         int writelen = 0;
 526
 527         buflen = board->fw_max_len;
 528
 529         buf = malloc(buflen);
 530         if (!buf) {
 531                 ERR("no memory for buffer\n");
 532                 goto out;
 533         }
 534
 535         memset(buf, 0xff, buflen);
 536         p = buf + sizeof(struct fw_header);
 537         ret = read_to_buf(&kernel_info, p);
 538         if (ret)
 539                 goto out_free_buf;
 540
 541         writelen = kernel_info.file_size;
 542
 543         if (!combined) {
 544                 p = buf + rootfs_ofs;
 545                 ret = read_to_buf(&rootfs_info, p);
 546                 if (ret)
 547                         goto out_free_buf;
 548
 549                 writelen = rootfs_ofs + rootfs_info.file_size;
 550         }
 551
 552         if (!strip_padding)
 553                 writelen = buflen;
 554
 555         fill_header(buf, writelen);
 556         ret = write_fw(buf, writelen);
 557         if (ret)
 558                 goto out_free_buf;
 559
 560         ret = EXIT_SUCCESS;
 561
 562  out_free_buf:
 563         free(buf);
 564  out:
 565         return ret;
 566 }
 567
 568 /* Helper functions to inspect_fw() representing different output formats */
 569 static inline void inspect_fw_pstr(char *label, char *str)
 570 {
 571         printf("%-23s: %s\n", label, str);
 572 }
 573
 574 static inline void inspect_fw_phex(char *label, uint32_t val)
 575 {
 576         printf("%-23s: 0x%08x\n", label, val);
 577 }
 578
 579 static inline void inspect_fw_phexpost(char *label,
 580                                        uint32_t val, char *post)
 581 {
 582         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 583 }
 584
 585 static inline void inspect_fw_phexdef(char *label,
 586                                       uint32_t val, uint32_t defval)
 587 {
 588         printf("%-23s: 0x%08x                  ", label, 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_phexexp(char *label,
 597                                       uint32_t val, uint32_t expval)
 598 {
 599         printf("%-23s: 0x%08x ", label, val);
 600
 601         if (val == expval)
 602                 printf("(ok)\n");
 603         else
 604                 printf("(expected: 0x%08x)\n", expval);
 605 }
 606
 607 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 608 {
 609         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 610 }
 611
 612 static inline void inspect_fw_phexdecdef(char *label,
 613                                          uint32_t val, uint32_t defval)
 614 {
 615         printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
 616
 617         if (val == defval)
 618                 printf("(== OpenWrt default)\n");
 619         else
 620                 printf("(OpenWrt default: 0x%08x)\n", defval);
 621 }
 622
 623 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
 624 {
 625         int i;
 626
 627         printf("%-23s:", label);
 628         for (i=0; i<MD5SUM_LEN; i++)
 629                 printf(" %02x", val[i]);
 630         printf(" %s\n", text);
 631 }
 632
 633 static int inspect_fw(void)
 634 {
 635         char *buf;
 636         struct fw_header *hdr;
 637         uint8_t md5sum[MD5SUM_LEN];
 638         struct board_info *board;
 639         int ret = EXIT_FAILURE;
 640
 641         buf = malloc(inspect_info.file_size);
 642         if (!buf) {
 643                 ERR("no memory for buffer!\n");
 644                 goto out;
 645         }
 646
 647         ret = read_to_buf(&inspect_info, buf);
 648         if (ret)
 649                 goto out_free_buf;
 650         hdr = (struct fw_header *)buf;
 651
 652         inspect_fw_pstr("File name", inspect_info.file_name);
 653         inspect_fw_phexdec("File size", inspect_info.file_size);
 654
 655         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 656                 ERR("file does not seem to have V1 header!\n");
 657                 goto out_free_buf;
 658         }
 659
 660         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 661
 662         if (BE32_TO_HOST(hdr->unk1) != 0)
 663                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 664
 665         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 666         if (BE32_TO_HOST(hdr->boot_len) == 0)
 667                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 668         else
 669                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 670         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 671
 672         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 673                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 674                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 675         } else {
 676                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 677         }
 678         if (BE32_TO_HOST(hdr->unk2) != 0)
 679                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 680         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 681                            "(purpose yet unknown, unchecked here)");
 682         if (BE32_TO_HOST(hdr->unk3) != 0)
 683                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 684
 685         printf("\n");
 686
 687         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 688         inspect_fw_pstr("Firmware version", hdr->fw_version);
 689         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 690         if (board) {
 691                 inspect_fw_phexpost("Hardware ID",
 692                                     BE32_TO_HOST(hdr->hw_id), board->id);
 693                 inspect_fw_phexexp("Hardware Revision",
 694                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 695         } else {
 696                 inspect_fw_phexpost("Hardware ID",
 697                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 698                 inspect_fw_phex("Hardware Revision",
 699                                 BE32_TO_HOST(hdr->hw_rev));
 700         }
 701
 702         printf("\n");
 703
 704         inspect_fw_phexdec("Kernel data offset",
 705                            BE32_TO_HOST(hdr->kernel_ofs));
 706         inspect_fw_phexdec("Kernel data length",
 707                            BE32_TO_HOST(hdr->kernel_len));
 708         if (board) {
 709                 inspect_fw_phexdef("Kernel load address",
 710                                    BE32_TO_HOST(hdr->kernel_la),
 711                                    board->kernel_la);
 712                 inspect_fw_phexdef("Kernel entry point",
 713                                    BE32_TO_HOST(hdr->kernel_ep),
 714                                    board->kernel_ep);
 715                 inspect_fw_phexdecdef("Rootfs data offset",
 716                                       BE32_TO_HOST(hdr->rootfs_ofs),
 717                                       board->rootfs_ofs);
 718         } else {
 719                 inspect_fw_phex("Kernel load address",
 720                                 BE32_TO_HOST(hdr->kernel_la));
 721                 inspect_fw_phex("Kernel entry point",
 722                                 BE32_TO_HOST(hdr->kernel_ep));
 723                 inspect_fw_phexdec("Rootfs data offset",
 724                                    BE32_TO_HOST(hdr->rootfs_ofs));
 725         }
 726         inspect_fw_phexdec("Rootfs data length",
 727                            BE32_TO_HOST(hdr->rootfs_len));
 728         inspect_fw_phexdec("Boot loader data offset",
 729                            BE32_TO_HOST(hdr->boot_ofs));
 730         inspect_fw_phexdec("Boot loader data length",
 731                            BE32_TO_HOST(hdr->boot_len));
 732         inspect_fw_phexdec("Total firmware length",
 733                            BE32_TO_HOST(hdr->fw_length));
 734
 735         if (extract) {
 736                 FILE *fp;
 737                 char *filename;
 738
 739                 printf("\n");
 740
 741                 filename = malloc(strlen(inspect_info.file_name) + 8);
 742                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 743                 printf("Extracting kernel to \"%s\"...\n", filename);
 744                 fp = fopen(filename, "w");
 745                 if (fp) {
 746                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 747                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 748                                 ERR("error in fwrite(): %s", strerror(errno));
 749                         }
 750                         fclose(fp);
 751                 } else {
 752                         ERR("error in fopen(): %s", strerror(errno));
 753                 }
 754                 free(filename);
 755
 756                 filename = malloc(strlen(inspect_info.file_name) + 8);
 757                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 758                 printf("Extracting rootfs to \"%s\"...\n", filename);
 759                 fp = fopen(filename, "w");
 760                 if (fp) {
 761                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 762                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 763                                 ERR("error in fwrite(): %s", strerror(errno));
 764                         }
 765                         fclose(fp);
 766                 } else {
 767                         ERR("error in fopen(): %s", strerror(errno));
 768                 }
 769                 free(filename);
 770         }
 771
 772  out_free_buf:
 773         free(buf);
 774  out:
 775         return ret;
 776 }
 777
 778 int main(int argc, char *argv[])
 779 {
 780         int ret = EXIT_FAILURE;
 781         int err;
 782
 783         FILE *outfile;
 784
 785         progname = basename(argv[0]);
 786
 787         while ( 1 ) {
 788                 int c;
 789
 790                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 791                 if (c == -1)
 792                         break;
 793
 794                 switch (c) {
 795                 case 'B':
 796                         board_id = optarg;
 797                         break;
 798                 case 'E':
 799                         sscanf(optarg, "0x%x", &kernel_ep);
 800                         break;
 801                 case 'L':
 802                         sscanf(optarg, "0x%x", &kernel_la);
 803                         break;
 804                 case 'V':
 805                         version = optarg;
 806                         break;
 807                 case 'N':
 808                         vendor = optarg;
 809                         break;
 810                 case 'c':
 811                         combined++;
 812                         break;
 813                 case 'k':
 814                         kernel_info.file_name = optarg;
 815                         break;
 816                 case 'r':
 817                         rootfs_info.file_name = optarg;
 818                         break;
 819                 case 'R':
 820                         sscanf(optarg, "0x%x", &rootfs_ofs);
 821                         break;
 822                 case 'o':
 823                         ofname = optarg;
 824                         break;
 825                 case 's':
 826                         strip_padding = 1;
 827                         break;
 828                 case 'i':
 829                         inspect_info.file_name = optarg;
 830                         break;
 831                 case 'x':
 832                         extract = 1;
 833                         break;
 834                 case 'h':
 835                         usage(EXIT_SUCCESS);
 836                         break;
 837                 default:
 838                         usage(EXIT_FAILURE);
 839                         break;
 840                 }
 841         }
 842
 843         ret = check_options();
 844         if (ret)
 845                 goto out;
 846
 847         if (!inspect_info.file_name)
 848                 ret = build_fw();
 849         else
 850                 ret = inspect_fw();
 851
 852  out:
 853         return ret;
 854 }
 855