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_WR703N_V1       0x07030101
  41 #define HWID_TL_WR741ND_V1      0x07410001
  42 #define HWID_TL_WR740N_V1       0x07400001
  43 #define HWID_TL_WR740N_V3       0x07400003
  44 #define HWID_TL_WR743ND_V1      0x07430001
  45 #define HWID_TL_WR841N_V1_5     0x08410002
  46 #define HWID_TL_WR841ND_V3      0x08410003
  47 #define HWID_TL_WR841ND_V5      0x08410005
  48 #define HWID_TL_WR841ND_V7      0x08410007
  49 #define HWID_TL_WR941ND_V2      0x09410002
  50 #define HWID_TL_WR941ND_V4      0x09410004
  51 #define HWID_TL_WR1043ND_V1     0x10430001
  52
  53 #define MD5SUM_LEN      16
  54
  55 struct file_info {
  56         char            *file_name;     /* name of the file */
  57         uint32_t        file_size;      /* length of the file */
  58 };
  59
  60 struct fw_header {
  61         uint32_t        version;        /* header version */
  62         char            vendor_name[24];
  63         char            fw_version[36];
  64         uint32_t        hw_id;          /* hardware id */
  65         uint32_t        hw_rev;         /* hardware revision */
  66         uint32_t        unk1;
  67         uint8_t         md5sum1[MD5SUM_LEN];
  68         uint32_t        unk2;
  69         uint8_t         md5sum2[MD5SUM_LEN];
  70         uint32_t        unk3;
  71         uint32_t        kernel_la;      /* kernel load address */
  72         uint32_t        kernel_ep;      /* kernel entry point */
  73         uint32_t        fw_length;      /* total length of the firmware */
  74         uint32_t        kernel_ofs;     /* kernel data offset */
  75         uint32_t        kernel_len;     /* kernel data length */
  76         uint32_t        rootfs_ofs;     /* rootfs data offset */
  77         uint32_t        rootfs_len;     /* rootfs data length */
  78         uint32_t        boot_ofs;       /* bootloader data offset */
  79         uint32_t        boot_len;       /* bootloader data length */
  80         uint8_t         pad[360];
  81 } __attribute__ ((packed));
  82
  83 struct board_info {
  84         char            *id;
  85         uint32_t        hw_id;
  86         uint32_t        hw_rev;
  87         uint32_t        fw_max_len;
  88         uint32_t        kernel_la;
  89         uint32_t        kernel_ep;
  90         uint32_t        rootfs_ofs;
  91 };
  92
  93 /*
  94  * Globals
  95  */
  96 static char *ofname;
  97 static char *progname;
  98 static char *vendor = "TP-LINK Technologies";
  99 static char *version = "ver. 1.0";
 100
 101 static char *board_id;
 102 static struct board_info *board;
 103 static struct file_info kernel_info;
 104 static uint32_t kernel_la = 0;
 105 static uint32_t kernel_ep = 0;
 106 static struct file_info rootfs_info;
 107 static uint32_t rootfs_ofs = 0;
 108 static struct file_info boot_info;
 109 static int combined;
 110 static int strip_padding;
 111
 112 static struct file_info inspect_info;
 113 static int extract = 0;
 114
 115 char md5salt_normal[MD5SUM_LEN] = {
 116         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 117         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 118 };
 119
 120 char md5salt_boot[MD5SUM_LEN] = {
 121         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 122         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 123 };
 124
 125 static struct board_info boards[] = {
 126         {
 127                 .id             = "TL-MR3220v1",
 128                 .hw_id          = HWID_TL_MR3220_V1,
 129                 .hw_rev         = 1,
 130                 .fw_max_len     = 0x3c0000,
 131                 .kernel_la      = 0x80060000,
 132                 .kernel_ep      = 0x80060000,
 133                 .rootfs_ofs     = 0x140000,
 134         }, {
 135                 .id             = "TL-MR3420v1",
 136                 .hw_id          = HWID_TL_MR3420_V1,
 137                 .hw_rev         = 1,
 138                 .fw_max_len     = 0x3c0000,
 139                 .kernel_la      = 0x80060000,
 140                 .kernel_ep      = 0x80060000,
 141                 .rootfs_ofs     = 0x140000,
 142         }, {
 143                 .id             = "TL-WA901NDv1",
 144                 .hw_id          = HWID_TL_WA901ND_V1,
 145                 .hw_rev         = 1,
 146                 .fw_max_len     = 0x3c0000,
 147                 .kernel_la      = 0x80060000,
 148                 .kernel_ep      = 0x80060000,
 149                 .rootfs_ofs     = 0x140000,
 150         }, {
 151                 .id             = "TL-WA901NDv2",
 152                 .hw_id          = HWID_TL_WA901ND_V2,
 153                 .hw_rev         = 1,
 154                 .fw_max_len     = 0x3c0000,
 155                 .kernel_la      = 0x80060000,
 156                 .kernel_ep      = 0x80060000,
 157                 .rootfs_ofs     = 0x140000,
 158         }, {
 159                 .id             = "TL-WR741NDv1",
 160                 .hw_id          = HWID_TL_WR741ND_V1,
 161                 .hw_rev         = 1,
 162                 .fw_max_len     = 0x3c0000,
 163                 .kernel_la      = 0x80060000,
 164                 .kernel_ep      = 0x80060000,
 165                 .rootfs_ofs     = 0x140000,
 166         }, {
 167                 .id             = "TL-WR740Nv1",
 168                 .hw_id          = HWID_TL_WR740N_V1,
 169                 .hw_rev         = 1,
 170                 .fw_max_len     = 0x3c0000,
 171                 .kernel_la      = 0x80060000,
 172                 .kernel_ep      = 0x80060000,
 173                 .rootfs_ofs     = 0x140000,
 174         }, {
 175                 .id             = "TL-WR740Nv3",
 176                 .hw_id          = HWID_TL_WR740N_V3,
 177                 .hw_rev         = 1,
 178                 .fw_max_len     = 0x3c0000,
 179                 .kernel_la      = 0x80060000,
 180                 .kernel_ep      = 0x80060000,
 181                 .rootfs_ofs     = 0x140000,
 182         }, {
 183                 .id             = "TL-WR743NDv1",
 184                 .hw_id          = HWID_TL_WR743ND_V1,
 185                 .hw_rev         = 1,
 186                 .fw_max_len     = 0x3c0000,
 187                 .kernel_la      = 0x80060000,
 188                 .kernel_ep      = 0x80060000,
 189                 .rootfs_ofs     = 0x140000,
 190         }, {
 191                 .id             = "TL-WR841Nv1.5",
 192                 .hw_id          = HWID_TL_WR841N_V1_5,
 193                 .hw_rev         = 2,
 194                 .fw_max_len     = 0x3c0000,
 195                 .kernel_la      = 0x80060000,
 196                 .kernel_ep      = 0x80060000,
 197                 .rootfs_ofs     = 0x140000,
 198         }, {
 199                 .id             = "TL-WR841NDv3",
 200                 .hw_id          = HWID_TL_WR841ND_V3,
 201                 .hw_rev         = 3,
 202                 .fw_max_len     = 0x3c0000,
 203                 .kernel_la      = 0x80060000,
 204                 .kernel_ep      = 0x80060000,
 205                 .rootfs_ofs     = 0x140000,
 206         }, {
 207                 .id             = "TL-WR841NDv5",
 208                 .hw_id          = HWID_TL_WR841ND_V5,
 209                 .hw_rev         = 1,
 210                 .fw_max_len     = 0x3c0000,
 211                 .kernel_la      = 0x80060000,
 212                 .kernel_ep      = 0x80060000,
 213                 .rootfs_ofs     = 0x140000,
 214         }, {
 215                 .id             = "TL-WR841NDv7",
 216                 .hw_id          = HWID_TL_WR841ND_V7,
 217                 .hw_rev         = 1,
 218                 .fw_max_len     = 0x3c0000,
 219                 .kernel_la      = 0x80060000,
 220                 .kernel_ep      = 0x80060000,
 221                 .rootfs_ofs     = 0x140000,
 222         }, {
 223                 .id             = "TL-WR941NDv2",
 224                 .hw_id          = HWID_TL_WR941ND_V2,
 225                 .hw_rev         = 2,
 226                 .fw_max_len     = 0x3c0000,
 227                 .kernel_la      = 0x80060000,
 228                 .kernel_ep      = 0x80060000,
 229                 .rootfs_ofs     = 0x140000,
 230         }, {
 231                 .id             = "TL-WR941NDv4",
 232                 .hw_id          = HWID_TL_WR941ND_V4,
 233                 .hw_rev         = 1,
 234                 .fw_max_len     = 0x3c0000,
 235                 .kernel_la      = 0x80060000,
 236                 .kernel_ep      = 0x80060000,
 237                 .rootfs_ofs     = 0x140000,
 238         }, {
 239                 .id             = "TL-WR1043NDv1",
 240                 .hw_id          = HWID_TL_WR1043ND_V1,
 241                 .hw_rev         = 1,
 242                 .fw_max_len     = 0x7c0000,
 243                 .kernel_la      = 0x80060000,
 244                 .kernel_ep      = 0x80060000,
 245                 .rootfs_ofs     = 0x140000,
 246         }, {
 247                 .id             = "TL-WR703Nv1",
 248                 .hw_id          = HWID_TL_WR703N_V1,
 249                 .hw_rev         = 1,
 250                 .fw_max_len     = 0x3c0000,
 251                 .kernel_la      = 0x80060000,
 252                 .kernel_ep      = 0x80060000,
 253                 .rootfs_ofs     = 0x100000,
 254         }, {
 255                 /* terminating entry */
 256         }
 257 };
 258
 259 /*
 260  * Message macros
 261  */
 262 #define ERR(fmt, ...) do { \
 263         fflush(0); \
 264         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 265                         progname, ## __VA_ARGS__ ); \
 266 } while (0)
 267
 268 #define ERRS(fmt, ...) do { \
 269         int save = errno; \
 270         fflush(0); \
 271         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 272                         progname, ## __VA_ARGS__, strerror(save)); \
 273 } while (0)
 274
 275 #define DBG(fmt, ...) do { \
 276         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 277 } while (0)
 278
 279 static struct board_info *find_board(char *id)
 280 {
 281         struct board_info *ret;
 282         struct board_info *board;
 283
 284         ret = NULL;
 285         for (board = boards; board->id != NULL; board++){
 286                 if (strcasecmp(id, board->id) == 0) {
 287                         ret = board;
 288                         break;
 289                 }
 290         };
 291
 292         return ret;
 293 }
 294
 295 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 296 {
 297         struct board_info *board;
 298
 299         for (board = boards; board->id != NULL; board++) {
 300                 if (hw_id == board->hw_id)
 301                         return board;
 302         };
 303
 304         return NULL;
 305 }
 306
 307
 308 static void usage(int status)
 309 {
 310         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 311         struct board_info *board;
 312
 313         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 314         fprintf(stream,
 315 "\n"
 316 "Options:\n"
 317 "  -B <board>      create image for the board specified with <board>\n"
 318 "  -c              use combined kernel image\n"
 319 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 320 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 321 "  -k <file>       read kernel image from the file <file>\n"
 322 "  -r <file>       read rootfs image from the file <file>\n"
 323 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 324 "  -o <file>       write output to the file <file>\n"
 325 "  -s              strip padding from the end of the image\n"
 326 "  -N <vendor>     set image vendor to <vendor>\n"
 327 "  -V <version>    set image version to <version>\n"
 328 "  -i <file>       inspect given firmware file <file>\n"
 329 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 330 "  -h              show this screen\n"
 331         );
 332
 333         exit(status);
 334 }
 335
 336 static int get_md5(char *data, int size, char *md5)
 337 {
 338         MD5_CTX ctx;
 339
 340         MD5_Init(&ctx);
 341         MD5_Update(&ctx, data, size);
 342         MD5_Final(md5, &ctx);
 343 }
 344
 345 static int get_file_stat(struct file_info *fdata)
 346 {
 347         struct stat st;
 348         int res;
 349
 350         if (fdata->file_name == NULL)
 351                 return 0;
 352
 353         res = stat(fdata->file_name, &st);
 354         if (res){
 355                 ERRS("stat failed on %s", fdata->file_name);
 356                 return res;
 357         }
 358
 359         fdata->file_size = st.st_size;
 360         return 0;
 361 }
 362
 363 static int read_to_buf(struct file_info *fdata, char *buf)
 364 {
 365         FILE *f;
 366         int ret = EXIT_FAILURE;
 367
 368         f = fopen(fdata->file_name, "r");
 369         if (f == NULL) {
 370                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 371                 goto out;
 372         }
 373
 374         errno = 0;
 375         fread(buf, fdata->file_size, 1, f);
 376         if (errno != 0) {
 377                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 378                 goto out_close;
 379         }
 380
 381         ret = EXIT_SUCCESS;
 382
 383  out_close:
 384         fclose(f);
 385  out:
 386         return ret;
 387 }
 388
 389 static int check_options(void)
 390 {
 391         int ret;
 392
 393         if (inspect_info.file_name) {
 394                 ret = get_file_stat(&inspect_info);
 395                 if (ret)
 396                         return ret;
 397
 398                 return 0;
 399         } else if (extract) {
 400                 ERR("no firmware for inspection specified");
 401                 return -1;
 402         }
 403
 404         if (board_id == NULL) {
 405                 ERR("no board specified");
 406                 return -1;
 407         }
 408
 409         board = find_board(board_id);
 410         if (board == NULL) {
 411                 ERR("unknown/unsupported board id \"%s\"", board_id);
 412                 return -1;
 413         }
 414         if (!kernel_la)
 415                 kernel_la = board->kernel_la;
 416         if (!kernel_ep)
 417                 kernel_ep = board->kernel_ep;
 418         if (!rootfs_ofs)
 419                 rootfs_ofs = board->rootfs_ofs;
 420
 421         if (kernel_info.file_name == NULL) {
 422                 ERR("no kernel image specified");
 423                 return -1;
 424         }
 425
 426         ret = get_file_stat(&kernel_info);
 427         if (ret)
 428                 return ret;
 429
 430         if (combined) {
 431                 if (kernel_info.file_size >
 432                     board->fw_max_len - sizeof(struct fw_header)) {
 433                         ERR("kernel image is too big");
 434                         return -1;
 435                 }
 436         } else {
 437                 if (kernel_info.file_size >
 438                     rootfs_ofs - sizeof(struct fw_header)) {
 439                         ERR("kernel image is too big");
 440                         return -1;
 441                 }
 442                 if (rootfs_info.file_name == NULL) {
 443                         ERR("no rootfs image specified");
 444                         return -1;
 445                 }
 446
 447                 ret = get_file_stat(&rootfs_info);
 448                 if (ret)
 449                         return ret;
 450
 451                 if (rootfs_info.file_size >
 452                     (board->fw_max_len - rootfs_ofs)) {
 453                         ERR("rootfs image is too big");
 454                         return -1;
 455                 }
 456         }
 457
 458         if (ofname == NULL) {
 459                 ERR("no output file specified");
 460                 return -1;
 461         }
 462
 463         return 0;
 464 }
 465
 466 static void fill_header(char *buf, int len)
 467 {
 468         struct fw_header *hdr = (struct fw_header *)buf;
 469
 470         memset(hdr, 0, sizeof(struct fw_header));
 471
 472         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 473         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 474         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 475         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 476         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 477
 478         if (boot_info.file_size == 0)
 479                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 480         else
 481                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 482
 483         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 484         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 485         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 486         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 487         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 488         if (!combined) {
 489                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 490                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 491         }
 492
 493         get_md5(buf, len, hdr->md5sum1);
 494 }
 495
 496 static int write_fw(char *data, int len)
 497 {
 498         FILE *f;
 499         int ret = EXIT_FAILURE;
 500
 501         f = fopen(ofname, "w");
 502         if (f == NULL) {
 503                 ERRS("could not open \"%s\" for writing", ofname);
 504                 goto out;
 505         }
 506
 507         errno = 0;
 508         fwrite(data, len, 1, f);
 509         if (errno) {
 510                 ERRS("unable to write output file");
 511                 goto out_flush;
 512         }
 513
 514         DBG("firmware file \"%s\" completed", ofname);
 515
 516         ret = EXIT_SUCCESS;
 517
 518  out_flush:
 519         fflush(f);
 520         fclose(f);
 521         if (ret != EXIT_SUCCESS) {
 522                 unlink(ofname);
 523         }
 524  out:
 525         return ret;
 526 }
 527
 528 static int build_fw(void)
 529 {
 530         int buflen;
 531         char *buf;
 532         char *p;
 533         int ret = EXIT_FAILURE;
 534         int writelen = 0;
 535
 536         buflen = board->fw_max_len;
 537
 538         buf = malloc(buflen);
 539         if (!buf) {
 540                 ERR("no memory for buffer\n");
 541                 goto out;
 542         }
 543
 544         memset(buf, 0xff, buflen);
 545         p = buf + sizeof(struct fw_header);
 546         ret = read_to_buf(&kernel_info, p);
 547         if (ret)
 548                 goto out_free_buf;
 549
 550         writelen = kernel_info.file_size;
 551
 552         if (!combined) {
 553                 p = buf + rootfs_ofs;
 554                 ret = read_to_buf(&rootfs_info, p);
 555                 if (ret)
 556                         goto out_free_buf;
 557
 558                 writelen = rootfs_ofs + rootfs_info.file_size;
 559         }
 560
 561         if (!strip_padding)
 562                 writelen = buflen;
 563
 564         fill_header(buf, writelen);
 565         ret = write_fw(buf, writelen);
 566         if (ret)
 567                 goto out_free_buf;
 568
 569         ret = EXIT_SUCCESS;
 570
 571  out_free_buf:
 572         free(buf);
 573  out:
 574         return ret;
 575 }
 576
 577 /* Helper functions to inspect_fw() representing different output formats */
 578 static inline void inspect_fw_pstr(char *label, char *str)
 579 {
 580         printf("%-23s: %s\n", label, str);
 581 }
 582
 583 static inline void inspect_fw_phex(char *label, uint32_t val)
 584 {
 585         printf("%-23s: 0x%08x\n", label, val);
 586 }
 587
 588 static inline void inspect_fw_phexpost(char *label,
 589                                        uint32_t val, char *post)
 590 {
 591         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 592 }
 593
 594 static inline void inspect_fw_phexdef(char *label,
 595                                       uint32_t val, uint32_t defval)
 596 {
 597         printf("%-23s: 0x%08x                  ", label, val);
 598
 599         if (val == defval)
 600                 printf("(== OpenWrt default)\n");
 601         else
 602                 printf("(OpenWrt default: 0x%08x)\n", defval);
 603 }
 604
 605 static inline void inspect_fw_phexexp(char *label,
 606                                       uint32_t val, uint32_t expval)
 607 {
 608         printf("%-23s: 0x%08x ", label, val);
 609
 610         if (val == expval)
 611                 printf("(ok)\n");
 612         else
 613                 printf("(expected: 0x%08x)\n", expval);
 614 }
 615
 616 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 617 {
 618         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 619 }
 620
 621 static inline void inspect_fw_phexdecdef(char *label,
 622                                          uint32_t val, uint32_t defval)
 623 {
 624         printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
 625
 626         if (val == defval)
 627                 printf("(== OpenWrt default)\n");
 628         else
 629                 printf("(OpenWrt default: 0x%08x)\n", defval);
 630 }
 631
 632 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
 633 {
 634         int i;
 635
 636         printf("%-23s:", label);
 637         for (i=0; i<MD5SUM_LEN; i++)
 638                 printf(" %02x", val[i]);
 639         printf(" %s\n", text);
 640 }
 641
 642 static int inspect_fw(void)
 643 {
 644         char *buf;
 645         struct fw_header *hdr;
 646         uint8_t md5sum[MD5SUM_LEN];
 647         struct board_info *board;
 648         int ret = EXIT_FAILURE;
 649
 650         buf = malloc(inspect_info.file_size);
 651         if (!buf) {
 652                 ERR("no memory for buffer!\n");
 653                 goto out;
 654         }
 655
 656         ret = read_to_buf(&inspect_info, buf);
 657         if (ret)
 658                 goto out_free_buf;
 659         hdr = (struct fw_header *)buf;
 660
 661         inspect_fw_pstr("File name", inspect_info.file_name);
 662         inspect_fw_phexdec("File size", inspect_info.file_size);
 663
 664         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 665                 ERR("file does not seem to have V1 header!\n");
 666                 goto out_free_buf;
 667         }
 668
 669         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 670
 671         if (BE32_TO_HOST(hdr->unk1) != 0)
 672                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 673
 674         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 675         if (BE32_TO_HOST(hdr->boot_len) == 0)
 676                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 677         else
 678                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 679         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 680
 681         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 682                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 683                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 684         } else {
 685                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 686         }
 687         if (BE32_TO_HOST(hdr->unk2) != 0)
 688                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 689         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 690                            "(purpose yet unknown, unchecked here)");
 691         if (BE32_TO_HOST(hdr->unk3) != 0)
 692                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 693
 694         printf("\n");
 695
 696         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 697         inspect_fw_pstr("Firmware version", hdr->fw_version);
 698         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 699         if (board) {
 700                 inspect_fw_phexpost("Hardware ID",
 701                                     BE32_TO_HOST(hdr->hw_id), board->id);
 702                 inspect_fw_phexexp("Hardware Revision",
 703                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 704         } else {
 705                 inspect_fw_phexpost("Hardware ID",
 706                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 707                 inspect_fw_phex("Hardware Revision",
 708                                 BE32_TO_HOST(hdr->hw_rev));
 709         }
 710
 711         printf("\n");
 712
 713         inspect_fw_phexdec("Kernel data offset",
 714                            BE32_TO_HOST(hdr->kernel_ofs));
 715         inspect_fw_phexdec("Kernel data length",
 716                            BE32_TO_HOST(hdr->kernel_len));
 717         if (board) {
 718                 inspect_fw_phexdef("Kernel load address",
 719                                    BE32_TO_HOST(hdr->kernel_la),
 720                                    board->kernel_la);
 721                 inspect_fw_phexdef("Kernel entry point",
 722                                    BE32_TO_HOST(hdr->kernel_ep),
 723                                    board->kernel_ep);
 724                 inspect_fw_phexdecdef("Rootfs data offset",
 725                                       BE32_TO_HOST(hdr->rootfs_ofs),
 726                                       board->rootfs_ofs);
 727         } else {
 728                 inspect_fw_phex("Kernel load address",
 729                                 BE32_TO_HOST(hdr->kernel_la));
 730                 inspect_fw_phex("Kernel entry point",
 731                                 BE32_TO_HOST(hdr->kernel_ep));
 732                 inspect_fw_phexdec("Rootfs data offset",
 733                                    BE32_TO_HOST(hdr->rootfs_ofs));
 734         }
 735         inspect_fw_phexdec("Rootfs data length",
 736                            BE32_TO_HOST(hdr->rootfs_len));
 737         inspect_fw_phexdec("Boot loader data offset",
 738                            BE32_TO_HOST(hdr->boot_ofs));
 739         inspect_fw_phexdec("Boot loader data length",
 740                            BE32_TO_HOST(hdr->boot_len));
 741         inspect_fw_phexdec("Total firmware length",
 742                            BE32_TO_HOST(hdr->fw_length));
 743
 744         if (extract) {
 745                 FILE *fp;
 746                 char *filename;
 747
 748                 printf("\n");
 749
 750                 filename = malloc(strlen(inspect_info.file_name) + 8);
 751                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 752                 printf("Extracting kernel to \"%s\"...\n", filename);
 753                 fp = fopen(filename, "w");
 754                 if (fp) {
 755                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 756                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 757                                 ERR("error in fwrite(): %s", strerror(errno));
 758                         }
 759                         fclose(fp);
 760                 } else {
 761                         ERR("error in fopen(): %s", strerror(errno));
 762                 }
 763                 free(filename);
 764
 765                 filename = malloc(strlen(inspect_info.file_name) + 8);
 766                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 767                 printf("Extracting rootfs to \"%s\"...\n", filename);
 768                 fp = fopen(filename, "w");
 769                 if (fp) {
 770                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 771                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 772                                 ERR("error in fwrite(): %s", strerror(errno));
 773                         }
 774                         fclose(fp);
 775                 } else {
 776                         ERR("error in fopen(): %s", strerror(errno));
 777                 }
 778                 free(filename);
 779         }
 780
 781  out_free_buf:
 782         free(buf);
 783  out:
 784         return ret;
 785 }
 786
 787 int main(int argc, char *argv[])
 788 {
 789         int ret = EXIT_FAILURE;
 790         int err;
 791
 792         FILE *outfile;
 793
 794         progname = basename(argv[0]);
 795
 796         while ( 1 ) {
 797                 int c;
 798
 799                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 800                 if (c == -1)
 801                         break;
 802
 803                 switch (c) {
 804                 case 'B':
 805                         board_id = optarg;
 806                         break;
 807                 case 'E':
 808                         sscanf(optarg, "0x%x", &kernel_ep);
 809                         break;
 810                 case 'L':
 811                         sscanf(optarg, "0x%x", &kernel_la);
 812                         break;
 813                 case 'V':
 814                         version = optarg;
 815                         break;
 816                 case 'N':
 817                         vendor = optarg;
 818                         break;
 819                 case 'c':
 820                         combined++;
 821                         break;
 822                 case 'k':
 823                         kernel_info.file_name = optarg;
 824                         break;
 825                 case 'r':
 826                         rootfs_info.file_name = optarg;
 827                         break;
 828                 case 'R':
 829                         sscanf(optarg, "0x%x", &rootfs_ofs);
 830                         break;
 831                 case 'o':
 832                         ofname = optarg;
 833                         break;
 834                 case 's':
 835                         strip_padding = 1;
 836                         break;
 837                 case 'i':
 838                         inspect_info.file_name = optarg;
 839                         break;
 840                 case 'x':
 841                         extract = 1;
 842                         break;
 843                 case 'h':
 844                         usage(EXIT_SUCCESS);
 845                         break;
 846                 default:
 847                         usage(EXIT_FAILURE);
 848                         break;
 849                 }
 850         }
 851
 852         ret = check_options();
 853         if (ret)
 854                 goto out;
 855
 856         if (!inspect_info.file_name)
 857                 ret = build_fw();
 858         else
 859                 ret = inspect_fw();
 860
 861  out:
 862         return ret;
 863 }
 864