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_WR841N_V1_5     0x08410002
  44 #define HWID_TL_WR841ND_V3      0x08410003
  45 #define HWID_TL_WR841ND_V5      0x08410005
  46 #define HWID_TL_WR841ND_V7      0x08410007
  47 #define HWID_TL_WR941ND_V2      0x09410002
  48 #define HWID_TL_WR941ND_V4      0x09410004
  49 #define HWID_TL_WR1043ND_V1     0x10430001
  50
  51 #define MD5SUM_LEN      16
  52
  53 struct file_info {
  54         char            *file_name;     /* name of the file */
  55         uint32_t        file_size;      /* length of the file */
  56 };
  57
  58 struct fw_header {
  59         uint32_t        version;        /* header version */
  60         char            vendor_name[24];
  61         char            fw_version[36];
  62         uint32_t        hw_id;          /* hardware id */
  63         uint32_t        hw_rev;         /* hardware revision */
  64         uint32_t        unk1;
  65         uint8_t         md5sum1[MD5SUM_LEN];
  66         uint32_t        unk2;
  67         uint8_t         md5sum2[MD5SUM_LEN];
  68         uint32_t        unk3;
  69         uint32_t        kernel_la;      /* kernel load address */
  70         uint32_t        kernel_ep;      /* kernel entry point */
  71         uint32_t        fw_length;      /* total length of the firmware */
  72         uint32_t        kernel_ofs;     /* kernel data offset */
  73         uint32_t        kernel_len;     /* kernel data length */
  74         uint32_t        rootfs_ofs;     /* rootfs data offset */
  75         uint32_t        rootfs_len;     /* rootfs data length */
  76         uint32_t        boot_ofs;       /* bootloader data offset */
  77         uint32_t        boot_len;       /* bootloader data length */
  78         uint8_t         pad[360];
  79 } __attribute__ ((packed));
  80
  81 struct board_info {
  82         char            *id;
  83         uint32_t        hw_id;
  84         uint32_t        hw_rev;
  85         uint32_t        fw_max_len;
  86         uint32_t        kernel_la;
  87         uint32_t        kernel_ep;
  88         uint32_t        rootfs_ofs;
  89 };
  90
  91 /*
  92  * Globals
  93  */
  94 static char *ofname;
  95 static char *progname;
  96 static char *vendor = "TP-LINK Technologies";
  97 static char *version = "ver. 1.0";
  98
  99 static char *board_id;
 100 static struct board_info *board;
 101 static struct file_info kernel_info;
 102 static uint32_t kernel_la = 0;
 103 static uint32_t kernel_ep = 0;
 104 static struct file_info rootfs_info;
 105 static uint32_t rootfs_ofs = 0;
 106 static struct file_info boot_info;
 107 static int combined;
 108 static int strip_padding;
 109
 110 static struct file_info inspect_info;
 111 static int extract = 0;
 112
 113 char md5salt_normal[MD5SUM_LEN] = {
 114         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 115         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 116 };
 117
 118 char md5salt_boot[MD5SUM_LEN] = {
 119         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 120         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 121 };
 122
 123 static struct board_info boards[] = {
 124         {
 125                 .id             = "TL-MR3220v1",
 126                 .hw_id          = HWID_TL_MR3220_V1,
 127                 .hw_rev         = 1,
 128                 .fw_max_len     = 0x3c0000,
 129                 .kernel_la      = 0x80060000,
 130                 .kernel_ep      = 0x80060000,
 131                 .rootfs_ofs     = 0x140000,
 132         }, {
 133                 .id             = "TL-MR3420v1",
 134                 .hw_id          = HWID_TL_MR3420_V1,
 135                 .hw_rev         = 1,
 136                 .fw_max_len     = 0x3c0000,
 137                 .kernel_la      = 0x80060000,
 138                 .kernel_ep      = 0x80060000,
 139                 .rootfs_ofs     = 0x140000,
 140         }, {
 141                 .id             = "TL-WA901NDv1",
 142                 .hw_id          = HWID_TL_WA901ND_V1,
 143                 .hw_rev         = 1,
 144                 .fw_max_len     = 0x3c0000,
 145                 .kernel_la      = 0x80060000,
 146                 .kernel_ep      = 0x80060000,
 147                 .rootfs_ofs     = 0x140000,
 148         }, {
 149                 .id             = "TL-WA901NDv2",
 150                 .hw_id          = HWID_TL_WA901ND_V2,
 151                 .hw_rev         = 1,
 152                 .fw_max_len     = 0x3c0000,
 153                 .kernel_la      = 0x80060000,
 154                 .kernel_ep      = 0x80060000,
 155                 .rootfs_ofs     = 0x140000,
 156         }, {
 157                 .id             = "TL-WR741NDv1",
 158                 .hw_id          = HWID_TL_WR741ND_V1,
 159                 .hw_rev         = 1,
 160                 .fw_max_len     = 0x3c0000,
 161                 .kernel_la      = 0x80060000,
 162                 .kernel_ep      = 0x80060000,
 163                 .rootfs_ofs     = 0x140000,
 164         }, {
 165                 .id             = "TL-WR740Nv1",
 166                 .hw_id          = HWID_TL_WR740N_V1,
 167                 .hw_rev         = 1,
 168                 .fw_max_len     = 0x3c0000,
 169                 .kernel_la      = 0x80060000,
 170                 .kernel_ep      = 0x80060000,
 171                 .rootfs_ofs     = 0x140000,
 172         }, {
 173                 .id             = "TL-WR740Nv3",
 174                 .hw_id          = HWID_TL_WR740N_V3,
 175                 .hw_rev         = 1,
 176                 .fw_max_len     = 0x3c0000,
 177                 .kernel_la      = 0x80060000,
 178                 .kernel_ep      = 0x80060000,
 179                 .rootfs_ofs     = 0x140000,
 180         }, {
 181                 .id             = "TL-WR841Nv1.5",
 182                 .hw_id          = HWID_TL_WR841N_V1_5,
 183                 .hw_rev         = 2,
 184                 .fw_max_len     = 0x3c0000,
 185                 .kernel_la      = 0x80060000,
 186                 .kernel_ep      = 0x80060000,
 187                 .rootfs_ofs     = 0x140000,
 188         }, {
 189                 .id             = "TL-WR841NDv3",
 190                 .hw_id          = HWID_TL_WR841ND_V3,
 191                 .hw_rev         = 3,
 192                 .fw_max_len     = 0x3c0000,
 193                 .kernel_la      = 0x80060000,
 194                 .kernel_ep      = 0x80060000,
 195                 .rootfs_ofs     = 0x140000,
 196         }, {
 197                 .id             = "TL-WR841NDv5",
 198                 .hw_id          = HWID_TL_WR841ND_V5,
 199                 .hw_rev         = 1,
 200                 .fw_max_len     = 0x3c0000,
 201                 .kernel_la      = 0x80060000,
 202                 .kernel_ep      = 0x80060000,
 203                 .rootfs_ofs     = 0x140000,
 204         }, {
 205                 .id             = "TL-WR841NDv7",
 206                 .hw_id          = HWID_TL_WR841ND_V7,
 207                 .hw_rev         = 1,
 208                 .fw_max_len     = 0x3c0000,
 209                 .kernel_la      = 0x80060000,
 210                 .kernel_ep      = 0x80060000,
 211                 .rootfs_ofs     = 0x140000,
 212         }, {
 213                 .id             = "TL-WR941NDv2",
 214                 .hw_id          = HWID_TL_WR941ND_V2,
 215                 .hw_rev         = 2,
 216                 .fw_max_len     = 0x3c0000,
 217                 .kernel_la      = 0x80060000,
 218                 .kernel_ep      = 0x80060000,
 219                 .rootfs_ofs     = 0x140000,
 220         }, {
 221                 .id             = "TL-WR941NDv4",
 222                 .hw_id          = HWID_TL_WR941ND_V4,
 223                 .hw_rev         = 1,
 224                 .fw_max_len     = 0x3c0000,
 225                 .kernel_la      = 0x80060000,
 226                 .kernel_ep      = 0x80060000,
 227                 .rootfs_ofs     = 0x140000,
 228         }, {
 229                 .id             = "TL-WR1043NDv1",
 230                 .hw_id          = HWID_TL_WR1043ND_V1,
 231                 .hw_rev         = 1,
 232                 .fw_max_len     = 0x7c0000,
 233                 .kernel_la      = 0x80060000,
 234                 .kernel_ep      = 0x80060000,
 235                 .rootfs_ofs     = 0x140000,
 236         }, {
 237                 /* terminating entry */
 238         }
 239 };
 240
 241 /*
 242  * Message macros
 243  */
 244 #define ERR(fmt, ...) do { \
 245         fflush(0); \
 246         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 247                         progname, ## __VA_ARGS__ ); \
 248 } while (0)
 249
 250 #define ERRS(fmt, ...) do { \
 251         int save = errno; \
 252         fflush(0); \
 253         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 254                         progname, ## __VA_ARGS__, strerror(save)); \
 255 } while (0)
 256
 257 #define DBG(fmt, ...) do { \
 258         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 259 } while (0)
 260
 261 static struct board_info *find_board(char *id)
 262 {
 263         struct board_info *ret;
 264         struct board_info *board;
 265
 266         ret = NULL;
 267         for (board = boards; board->id != NULL; board++){
 268                 if (strcasecmp(id, board->id) == 0) {
 269                         ret = board;
 270                         break;
 271                 }
 272         };
 273
 274         return ret;
 275 }
 276
 277 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 278 {
 279         struct board_info *board;
 280
 281         for (board = boards; board->id != NULL; board++) {
 282                 if (hw_id == board->hw_id)
 283                         return board;
 284         };
 285
 286         return NULL;
 287 }
 288
 289
 290 static void usage(int status)
 291 {
 292         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 293         struct board_info *board;
 294
 295         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 296         fprintf(stream,
 297 "\n"
 298 "Options:\n"
 299 "  -B <board>      create image for the board specified with <board>\n"
 300 "  -c              use combined kernel image\n"
 301 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 302 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 303 "  -k <file>       read kernel image from the file <file>\n"
 304 "  -r <file>       read rootfs image from the file <file>\n"
 305 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 306 "  -o <file>       write output to the file <file>\n"
 307 "  -s              strip padding from the end of the image\n"
 308 "  -N <vendor>     set image vendor to <vendor>\n"
 309 "  -V <version>    set image version to <version>\n"
 310 "  -i <file>       inspect given firmware file <file>\n"
 311 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 312 "  -h              show this screen\n"
 313         );
 314
 315         exit(status);
 316 }
 317
 318 static int get_md5(char *data, int size, char *md5)
 319 {
 320         MD5_CTX ctx;
 321
 322         MD5_Init(&ctx);
 323         MD5_Update(&ctx, data, size);
 324         MD5_Final(md5, &ctx);
 325 }
 326
 327 static int get_file_stat(struct file_info *fdata)
 328 {
 329         struct stat st;
 330         int res;
 331
 332         if (fdata->file_name == NULL)
 333                 return 0;
 334
 335         res = stat(fdata->file_name, &st);
 336         if (res){
 337                 ERRS("stat failed on %s", fdata->file_name);
 338                 return res;
 339         }
 340
 341         fdata->file_size = st.st_size;
 342         return 0;
 343 }
 344
 345 static int read_to_buf(struct file_info *fdata, char *buf)
 346 {
 347         FILE *f;
 348         int ret = EXIT_FAILURE;
 349
 350         f = fopen(fdata->file_name, "r");
 351         if (f == NULL) {
 352                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 353                 goto out;
 354         }
 355
 356         errno = 0;
 357         fread(buf, fdata->file_size, 1, f);
 358         if (errno != 0) {
 359                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 360                 goto out_close;
 361         }
 362
 363         ret = EXIT_SUCCESS;
 364
 365  out_close:
 366         fclose(f);
 367  out:
 368         return ret;
 369 }
 370
 371 static int check_options(void)
 372 {
 373         int ret;
 374
 375         if (inspect_info.file_name) {
 376                 ret = get_file_stat(&inspect_info);
 377                 if (ret)
 378                         return ret;
 379
 380                 return 0;
 381         } else if (extract) {
 382                 ERR("no firmware for inspection specified");
 383                 return -1;
 384         }
 385
 386         if (board_id == NULL) {
 387                 ERR("no board specified");
 388                 return -1;
 389         }
 390
 391         board = find_board(board_id);
 392         if (board == NULL) {
 393                 ERR("unknown/unsupported board id \"%s\"", board_id);
 394                 return -1;
 395         }
 396         if (!kernel_la)
 397                 kernel_la = board->kernel_la;
 398         if (!kernel_ep)
 399                 kernel_ep = board->kernel_ep;
 400         if (!rootfs_ofs)
 401                 rootfs_ofs = board->rootfs_ofs;
 402
 403         if (kernel_info.file_name == NULL) {
 404                 ERR("no kernel image specified");
 405                 return -1;
 406         }
 407
 408         ret = get_file_stat(&kernel_info);
 409         if (ret)
 410                 return ret;
 411
 412         if (combined) {
 413                 if (kernel_info.file_size >
 414                     board->fw_max_len - sizeof(struct fw_header)) {
 415                         ERR("kernel image is too big");
 416                         return -1;
 417                 }
 418         } else {
 419                 if (kernel_info.file_size >
 420                     rootfs_ofs - sizeof(struct fw_header)) {
 421                         ERR("kernel image is too big");
 422                         return -1;
 423                 }
 424                 if (rootfs_info.file_name == NULL) {
 425                         ERR("no rootfs image specified");
 426                         return -1;
 427                 }
 428
 429                 ret = get_file_stat(&rootfs_info);
 430                 if (ret)
 431                         return ret;
 432
 433                 if (rootfs_info.file_size >
 434                     (board->fw_max_len - rootfs_ofs)) {
 435                         ERR("rootfs image is too big");
 436                         return -1;
 437                 }
 438         }
 439
 440         if (ofname == NULL) {
 441                 ERR("no output file specified");
 442                 return -1;
 443         }
 444
 445         return 0;
 446 }
 447
 448 static void fill_header(char *buf, int len)
 449 {
 450         struct fw_header *hdr = (struct fw_header *)buf;
 451
 452         memset(hdr, 0, sizeof(struct fw_header));
 453
 454         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 455         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 456         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 457         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 458         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 459
 460         if (boot_info.file_size == 0)
 461                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 462         else
 463                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 464
 465         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 466         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 467         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 468         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 469         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 470         if (!combined) {
 471                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 472                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 473         }
 474
 475         get_md5(buf, len, hdr->md5sum1);
 476 }
 477
 478 static int write_fw(char *data, int len)
 479 {
 480         FILE *f;
 481         int ret = EXIT_FAILURE;
 482
 483         f = fopen(ofname, "w");
 484         if (f == NULL) {
 485                 ERRS("could not open \"%s\" for writing", ofname);
 486                 goto out;
 487         }
 488
 489         errno = 0;
 490         fwrite(data, len, 1, f);
 491         if (errno) {
 492                 ERRS("unable to write output file");
 493                 goto out_flush;
 494         }
 495
 496         DBG("firmware file \"%s\" completed", ofname);
 497
 498         ret = EXIT_SUCCESS;
 499
 500  out_flush:
 501         fflush(f);
 502         fclose(f);
 503         if (ret != EXIT_SUCCESS) {
 504                 unlink(ofname);
 505         }
 506  out:
 507         return ret;
 508 }
 509
 510 static int build_fw(void)
 511 {
 512         int buflen;
 513         char *buf;
 514         char *p;
 515         int ret = EXIT_FAILURE;
 516         int writelen = 0;
 517
 518         buflen = board->fw_max_len;
 519
 520         buf = malloc(buflen);
 521         if (!buf) {
 522                 ERR("no memory for buffer\n");
 523                 goto out;
 524         }
 525
 526         memset(buf, 0xff, buflen);
 527         p = buf + sizeof(struct fw_header);
 528         ret = read_to_buf(&kernel_info, p);
 529         if (ret)
 530                 goto out_free_buf;
 531
 532         writelen = kernel_info.file_size;
 533
 534         if (!combined) {
 535                 p = buf + rootfs_ofs;
 536                 ret = read_to_buf(&rootfs_info, p);
 537                 if (ret)
 538                         goto out_free_buf;
 539
 540                 writelen = rootfs_ofs + rootfs_info.file_size;
 541         }
 542
 543         if (!strip_padding)
 544                 writelen = buflen;
 545
 546         fill_header(buf, writelen);
 547         ret = write_fw(buf, writelen);
 548         if (ret)
 549                 goto out_free_buf;
 550
 551         ret = EXIT_SUCCESS;
 552
 553  out_free_buf:
 554         free(buf);
 555  out:
 556         return ret;
 557 }
 558
 559 /* Helper functions to inspect_fw() representing different output formats */
 560 static inline void inspect_fw_pstr(char *label, char *str)
 561 {
 562         printf("%-23s: %s\n", label, str);
 563 }
 564
 565 static inline void inspect_fw_phex(char *label, uint32_t val)
 566 {
 567         printf("%-23s: 0x%08x\n", label, val);
 568 }
 569
 570 static inline void inspect_fw_phexpost(char *label,
 571                                        uint32_t val, char *post)
 572 {
 573         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 574 }
 575
 576 static inline void inspect_fw_phexdef(char *label,
 577                                       uint32_t val, uint32_t defval)
 578 {
 579         printf("%-23s: 0x%08x                  ", label, val);
 580
 581         if (val == defval)
 582                 printf("(== OpenWrt default)\n");
 583         else
 584                 printf("(OpenWrt default: 0x%08x)\n", defval);
 585 }
 586
 587 static inline void inspect_fw_phexexp(char *label,
 588                                       uint32_t val, uint32_t expval)
 589 {
 590         printf("%-23s: 0x%08x ", label, val);
 591
 592         if (val == expval)
 593                 printf("(ok)\n");
 594         else
 595                 printf("(expected: 0x%08x)\n", expval);
 596 }
 597
 598 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 599 {
 600         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 601 }
 602
 603 static inline void inspect_fw_phexdecdef(char *label,
 604                                          uint32_t val, uint32_t defval)
 605 {
 606         printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
 607
 608         if (val == defval)
 609                 printf("(== OpenWrt default)\n");
 610         else
 611                 printf("(OpenWrt default: 0x%08x)\n", defval);
 612 }
 613
 614 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
 615 {
 616         int i;
 617
 618         printf("%-23s:", label);
 619         for (i=0; i<MD5SUM_LEN; i++)
 620                 printf(" %02x", val[i]);
 621         printf(" %s\n", text);
 622 }
 623
 624 static int inspect_fw(void)
 625 {
 626         char *buf;
 627         struct fw_header *hdr;
 628         uint8_t md5sum[MD5SUM_LEN];
 629         struct board_info *board;
 630         int ret = EXIT_FAILURE;
 631
 632         buf = malloc(inspect_info.file_size);
 633         if (!buf) {
 634                 ERR("no memory for buffer!\n");
 635                 goto out;
 636         }
 637
 638         ret = read_to_buf(&inspect_info, buf);
 639         if (ret)
 640                 goto out_free_buf;
 641         hdr = (struct fw_header *)buf;
 642
 643         inspect_fw_pstr("File name", inspect_info.file_name);
 644         inspect_fw_phexdec("File size", inspect_info.file_size);
 645
 646         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 647                 ERR("file does not seem to have V1 header!\n");
 648                 goto out_free_buf;
 649         }
 650
 651         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 652
 653         if (BE32_TO_HOST(hdr->unk1) != 0)
 654                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 655
 656         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 657         if (BE32_TO_HOST(hdr->boot_len) == 0)
 658                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 659         else
 660                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 661         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 662
 663         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 664                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 665                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 666         } else {
 667                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 668         }
 669         if (BE32_TO_HOST(hdr->unk2) != 0)
 670                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 671         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 672                            "(purpose yet unknown, unchecked here)");
 673         if (BE32_TO_HOST(hdr->unk3) != 0)
 674                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 675
 676         printf("\n");
 677
 678         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 679         inspect_fw_pstr("Firmware version", hdr->fw_version);
 680         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 681         if (board) {
 682                 inspect_fw_phexpost("Hardware ID",
 683                                     BE32_TO_HOST(hdr->hw_id), board->id);
 684                 inspect_fw_phexexp("Hardware Revision",
 685                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 686         } else {
 687                 inspect_fw_phexpost("Hardware ID",
 688                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 689                 inspect_fw_phex("Hardware Revision",
 690                                 BE32_TO_HOST(hdr->hw_rev));
 691         }
 692
 693         printf("\n");
 694
 695         inspect_fw_phexdec("Kernel data offset",
 696                            BE32_TO_HOST(hdr->kernel_ofs));
 697         inspect_fw_phexdec("Kernel data length",
 698                            BE32_TO_HOST(hdr->kernel_len));
 699         if (board) {
 700                 inspect_fw_phexdef("Kernel load address",
 701                                    BE32_TO_HOST(hdr->kernel_la),
 702                                    board->kernel_la);
 703                 inspect_fw_phexdef("Kernel entry point",
 704                                    BE32_TO_HOST(hdr->kernel_ep),
 705                                    board->kernel_ep);
 706                 inspect_fw_phexdecdef("Rootfs data offset",
 707                                       BE32_TO_HOST(hdr->rootfs_ofs),
 708                                       board->rootfs_ofs);
 709         } else {
 710                 inspect_fw_phex("Kernel load address",
 711                                 BE32_TO_HOST(hdr->kernel_la));
 712                 inspect_fw_phex("Kernel entry point",
 713                                 BE32_TO_HOST(hdr->kernel_ep));
 714                 inspect_fw_phexdec("Rootfs data offset",
 715                                    BE32_TO_HOST(hdr->rootfs_ofs));
 716         }
 717         inspect_fw_phexdec("Rootfs data length",
 718                            BE32_TO_HOST(hdr->rootfs_len));
 719         inspect_fw_phexdec("Boot loader data offset",
 720                            BE32_TO_HOST(hdr->boot_ofs));
 721         inspect_fw_phexdec("Boot loader data length",
 722                            BE32_TO_HOST(hdr->boot_len));
 723         inspect_fw_phexdec("Total firmware length",
 724                            BE32_TO_HOST(hdr->fw_length));
 725
 726         if (extract) {
 727                 FILE *fp;
 728                 char *filename;
 729
 730                 printf("\n");
 731
 732                 filename = malloc(strlen(inspect_info.file_name) + 8);
 733                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 734                 printf("Extracting kernel to \"%s\"...\n", filename);
 735                 fp = fopen(filename, "w");
 736                 if (fp) {
 737                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 738                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 739                                 ERR("error in fwrite(): %s", strerror(errno));
 740                         }
 741                         fclose(fp);
 742                 } else {
 743                         ERR("error in fopen(): %s", strerror(errno));
 744                 }
 745                 free(filename);
 746
 747                 filename = malloc(strlen(inspect_info.file_name) + 8);
 748                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 749                 printf("Extracting rootfs to \"%s\"...\n", filename);
 750                 fp = fopen(filename, "w");
 751                 if (fp) {
 752                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 753                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 754                                 ERR("error in fwrite(): %s", strerror(errno));
 755                         }
 756                         fclose(fp);
 757                 } else {
 758                         ERR("error in fopen(): %s", strerror(errno));
 759                 }
 760                 free(filename);
 761         }
 762
 763  out_free_buf:
 764         free(buf);
 765  out:
 766         return ret;
 767 }
 768
 769 int main(int argc, char *argv[])
 770 {
 771         int ret = EXIT_FAILURE;
 772         int err;
 773
 774         FILE *outfile;
 775
 776         progname = basename(argv[0]);
 777
 778         while ( 1 ) {
 779                 int c;
 780
 781                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 782                 if (c == -1)
 783                         break;
 784
 785                 switch (c) {
 786                 case 'B':
 787                         board_id = optarg;
 788                         break;
 789                 case 'E':
 790                         sscanf(optarg, "0x%x", &kernel_ep);
 791                         break;
 792                 case 'L':
 793                         sscanf(optarg, "0x%x", &kernel_la);
 794                         break;
 795                 case 'V':
 796                         version = optarg;
 797                         break;
 798                 case 'N':
 799                         vendor = optarg;
 800                         break;
 801                 case 'c':
 802                         combined++;
 803                         break;
 804                 case 'k':
 805                         kernel_info.file_name = optarg;
 806                         break;
 807                 case 'r':
 808                         rootfs_info.file_name = optarg;
 809                         break;
 810                 case 'R':
 811                         sscanf(optarg, "0x%x", &rootfs_ofs);
 812                         break;
 813                 case 'o':
 814                         ofname = optarg;
 815                         break;
 816                 case 's':
 817                         strip_padding = 1;
 818                         break;
 819                 case 'i':
 820                         inspect_info.file_name = optarg;
 821                         break;
 822                 case 'x':
 823                         extract = 1;
 824                         break;
 825                 case 'h':
 826                         usage(EXIT_SUCCESS);
 827                         break;
 828                 default:
 829                         usage(EXIT_FAILURE);
 830                         break;
 831                 }
 832         }
 833
 834         ret = check_options();
 835         if (ret)
 836                 goto out;
 837
 838         if (!inspect_info.file_name)
 839                 ret = build_fw();
 840         else
 841                 ret = inspect_fw();
 842
 843  out:
 844         return ret;
 845 }
 846