tools/firmware-utils/src/mktplinkfw.c

   1 /*
   2  * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
   3  *
   4  * This tool was based on:
   5  *   TP-Link WR941 V2 firmware checksum fixing tool.
   6  *   Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License version 2 as published
  10  * by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <stdint.h>
  17 #include <string.h>
  18 #include <unistd.h>     /* for unlink() */
  19 #include <libgen.h>
  20 #include <getopt.h>     /* for getopt() */
  21 #include <stdarg.h>
  22 #include <errno.h>
  23 #include <sys/stat.h>
  24
  25 #include "md5.h"
  26
  27 #if (__BYTE_ORDER == __BIG_ENDIAN)
  28 #  define HOST_TO_BE32(x)       (x)
  29 #  define BE32_TO_HOST(x)       (x)
  30 #else
  31 #  define HOST_TO_BE32(x)       bswap_32(x)
  32 #  define BE32_TO_HOST(x)       bswap_32(x)
  33 #endif
  34
  35 #define HEADER_VERSION_V1       0x01000000
  36 #define HWID_TL_MR3220_V1       0x32200001
  37 #define HWID_TL_MR3420_V1       0x34200001
  38 #define HWID_TL_WA901ND_V1      0x09010001
  39 #define HWID_TL_WR741ND_V1      0x07410001
  40 #define HWID_TL_WR841N_V1_5     0x08410002
  41 #define HWID_TL_WR841ND_V3      0x08410003
  42 #define HWID_TL_WR841ND_V5      0x08410005
  43 #define HWID_TL_WR841ND_V7      0x08410007
  44 #define HWID_TL_WR941ND_V2      0x09410002
  45 #define HWID_TL_WR941ND_V4      0x09410004
  46 #define HWID_TL_WR1043ND_V1     0x10430001
  47
  48 #define MD5SUM_LEN      16
  49
  50 struct file_info {
  51         char            *file_name;     /* name of the file */
  52         uint32_t        file_size;      /* length of the file */
  53 };
  54
  55 struct fw_header {
  56         uint32_t        version;        /* header version */
  57         char            vendor_name[24];
  58         char            fw_version[36];
  59         uint32_t        hw_id;          /* hardware id */
  60         uint32_t        hw_rev;         /* hardware revision */
  61         uint32_t        unk1;
  62         uint8_t         md5sum1[MD5SUM_LEN];
  63         uint32_t        unk2;
  64         uint8_t         md5sum2[MD5SUM_LEN];
  65         uint32_t        unk3;
  66         uint32_t        kernel_la;      /* kernel load address */
  67         uint32_t        kernel_ep;      /* kernel entry point */
  68         uint32_t        fw_length;      /* total length of the firmware */
  69         uint32_t        kernel_ofs;     /* kernel data offset */
  70         uint32_t        kernel_len;     /* kernel data length */
  71         uint32_t        rootfs_ofs;     /* rootfs data offset */
  72         uint32_t        rootfs_len;     /* rootfs data length */
  73         uint32_t        boot_ofs;       /* bootloader data offset */
  74         uint32_t        boot_len;       /* bootloader data length */
  75         uint8_t         pad[360];
  76 } __attribute__ ((packed));
  77
  78 struct board_info {
  79         char            *id;
  80         uint32_t        hw_id;
  81         uint32_t        hw_rev;
  82         uint32_t        fw_max_len;
  83         uint32_t        kernel_la;
  84         uint32_t        kernel_ep;
  85         uint32_t        rootfs_ofs;
  86 };
  87
  88 /*
  89  * Globals
  90  */
  91 static char *ofname;
  92 static char *progname;
  93 static char *vendor = "TP-LINK Technologies";
  94 static char *version = "ver. 1.0";
  95
  96 static char *board_id;
  97 static struct board_info *board;
  98 static struct file_info kernel_info;
  99 static uint32_t kernel_la = 0;
 100 static uint32_t kernel_ep = 0;
 101 static struct file_info rootfs_info;
 102 static uint32_t rootfs_ofs = 0;
 103 static struct file_info boot_info;
 104 static int combined;
 105 static int strip_padding;
 106
 107 static struct file_info inspect_info;
 108 static int extract = 0;
 109
 110 char md5salt_normal[MD5SUM_LEN] = {
 111         0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
 112         0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
 113 };
 114
 115 char md5salt_boot[MD5SUM_LEN] = {
 116         0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
 117         0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
 118 };
 119
 120 static struct board_info boards[] = {
 121         {
 122                 .id             = "TL-MR3220v1",
 123                 .hw_id          = HWID_TL_MR3220_V1,
 124                 .hw_rev         = 1,
 125                 .fw_max_len     = 0x3c0000,
 126                 .kernel_la      = 0x80060000,
 127                 .kernel_ep      = 0x80060000,
 128                 .rootfs_ofs     = 0x140000,
 129         }, {
 130                 .id             = "TL-MR3420v1",
 131                 .hw_id          = HWID_TL_MR3420_V1,
 132                 .hw_rev         = 1,
 133                 .fw_max_len     = 0x3c0000,
 134                 .kernel_la      = 0x80060000,
 135                 .kernel_ep      = 0x80060000,
 136                 .rootfs_ofs     = 0x140000,
 137         }, {
 138                 .id             = "TL-WA901NDv1",
 139                 .hw_id          = HWID_TL_WA901ND_V1,
 140                 .hw_rev         = 1,
 141                 .fw_max_len     = 0x3c0000,
 142                 .kernel_la      = 0x80060000,
 143                 .kernel_ep      = 0x80060000,
 144                 .rootfs_ofs     = 0x140000,
 145         }, {
 146                 .id             = "TL-WR741NDv1",
 147                 .hw_id          = HWID_TL_WR741ND_V1,
 148                 .hw_rev         = 1,
 149                 .fw_max_len     = 0x3c0000,
 150                 .kernel_la      = 0x80060000,
 151                 .kernel_ep      = 0x80060000,
 152                 .rootfs_ofs     = 0x140000,
 153         }, {
 154                 .id             = "TL-WR841Nv1.5",
 155                 .hw_id          = HWID_TL_WR841N_V1_5,
 156                 .hw_rev         = 2,
 157                 .fw_max_len     = 0x3c0000,
 158                 .kernel_la      = 0x80060000,
 159                 .kernel_ep      = 0x80060000,
 160                 .rootfs_ofs     = 0x140000,
 161         }, {
 162                 .id             = "TL-WR841NDv3",
 163                 .hw_id          = HWID_TL_WR841ND_V3,
 164                 .hw_rev         = 3,
 165                 .fw_max_len     = 0x3c0000,
 166                 .kernel_la      = 0x80060000,
 167                 .kernel_ep      = 0x80060000,
 168                 .rootfs_ofs     = 0x140000,
 169         }, {
 170                 .id             = "TL-WR841NDv5",
 171                 .hw_id          = HWID_TL_WR841ND_V5,
 172                 .hw_rev         = 1,
 173                 .fw_max_len     = 0x3c0000,
 174                 .kernel_la      = 0x80060000,
 175                 .kernel_ep      = 0x80060000,
 176                 .rootfs_ofs     = 0x140000,
 177         }, {
 178                 .id             = "TL-WR841NDv7",
 179                 .hw_id          = HWID_TL_WR841ND_V7,
 180                 .hw_rev         = 1,
 181                 .fw_max_len     = 0x3c0000,
 182                 .kernel_la      = 0x80060000,
 183                 .kernel_ep      = 0x80060000,
 184                 .rootfs_ofs     = 0x140000,
 185         }, {
 186                 .id             = "TL-WR941NDv2",
 187                 .hw_id          = HWID_TL_WR941ND_V2,
 188                 .hw_rev         = 2,
 189                 .fw_max_len     = 0x3c0000,
 190                 .kernel_la      = 0x80060000,
 191                 .kernel_ep      = 0x80060000,
 192                 .rootfs_ofs     = 0x140000,
 193         }, {
 194                 .id             = "TL-WR941NDv4",
 195                 .hw_id          = HWID_TL_WR941ND_V4,
 196                 .hw_rev         = 1,
 197                 .fw_max_len     = 0x3c0000,
 198                 .kernel_la      = 0x80060000,
 199                 .kernel_ep      = 0x80060000,
 200                 .rootfs_ofs     = 0x140000,
 201         }, {
 202                 .id             = "TL-WR1043NDv1",
 203                 .hw_id          = HWID_TL_WR1043ND_V1,
 204                 .hw_rev         = 1,
 205                 .fw_max_len     = 0x7c0000,
 206                 .kernel_la      = 0x80060000,
 207                 .kernel_ep      = 0x80060000,
 208                 .rootfs_ofs     = 0x140000,
 209         }, {
 210                 /* terminating entry */
 211         }
 212 };
 213
 214 /*
 215  * Message macros
 216  */
 217 #define ERR(fmt, ...) do { \
 218         fflush(0); \
 219         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 220                         progname, ## __VA_ARGS__ ); \
 221 } while (0)
 222
 223 #define ERRS(fmt, ...) do { \
 224         int save = errno; \
 225         fflush(0); \
 226         fprintf(stderr, "[%s] *** error: " fmt "\n", \
 227                         progname, ## __VA_ARGS__, strerror(save)); \
 228 } while (0)
 229
 230 #define DBG(fmt, ...) do { \
 231         fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
 232 } while (0)
 233
 234 static struct board_info *find_board(char *id)
 235 {
 236         struct board_info *ret;
 237         struct board_info *board;
 238
 239         ret = NULL;
 240         for (board = boards; board->id != NULL; board++){
 241                 if (strcasecmp(id, board->id) == 0) {
 242                         ret = board;
 243                         break;
 244                 }
 245         };
 246
 247         return ret;
 248 }
 249
 250 static struct board_info *find_board_by_hwid(uint32_t hw_id)
 251 {
 252         struct board_info *board;
 253
 254         for (board = boards; board->id != NULL; board++) {
 255                 if (hw_id == board->hw_id)
 256                         return board;
 257         };
 258
 259         return NULL;
 260 }
 261
 262
 263 static void usage(int status)
 264 {
 265         FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
 266         struct board_info *board;
 267
 268         fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
 269         fprintf(stream,
 270 "\n"
 271 "Options:\n"
 272 "  -B <board>      create image for the board specified with <board>\n"
 273 "  -c              use combined kernel image\n"
 274 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 275 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 276 "  -k <file>       read kernel image from the file <file>\n"
 277 "  -r <file>       read rootfs image from the file <file>\n"
 278 "  -R <offset>     overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
 279 "  -o <file>       write output to the file <file>\n"
 280 "  -s              strip padding from the end of the image\n"
 281 "  -N <vendor>     set image vendor to <vendor>\n"
 282 "  -V <version>    set image version to <version>\n"
 283 "  -i <file>       inspect given firmware file <file>\n"
 284 "  -x              extract kernel and rootfs while inspecting (requires -i)\n"
 285 "  -h              show this screen\n"
 286         );
 287
 288         exit(status);
 289 }
 290
 291 static int get_md5(char *data, int size, char *md5)
 292 {
 293         MD5_CTX ctx;
 294
 295         MD5_Init(&ctx);
 296         MD5_Update(&ctx, data, size);
 297         MD5_Final(md5, &ctx);
 298 }
 299
 300 static int get_file_stat(struct file_info *fdata)
 301 {
 302         struct stat st;
 303         int res;
 304
 305         if (fdata->file_name == NULL)
 306                 return 0;
 307
 308         res = stat(fdata->file_name, &st);
 309         if (res){
 310                 ERRS("stat failed on %s", fdata->file_name);
 311                 return res;
 312         }
 313
 314         fdata->file_size = st.st_size;
 315         return 0;
 316 }
 317
 318 static int read_to_buf(struct file_info *fdata, char *buf)
 319 {
 320         FILE *f;
 321         int ret = EXIT_FAILURE;
 322
 323         f = fopen(fdata->file_name, "r");
 324         if (f == NULL) {
 325                 ERRS("could not open \"%s\" for reading", fdata->file_name);
 326                 goto out;
 327         }
 328
 329         errno = 0;
 330         fread(buf, fdata->file_size, 1, f);
 331         if (errno != 0) {
 332                 ERRS("unable to read from file \"%s\"", fdata->file_name);
 333                 goto out_close;
 334         }
 335
 336         ret = EXIT_SUCCESS;
 337
 338  out_close:
 339         fclose(f);
 340  out:
 341         return ret;
 342 }
 343
 344 static int check_options(void)
 345 {
 346         int ret;
 347
 348         if (inspect_info.file_name) {
 349                 ret = get_file_stat(&inspect_info);
 350                 if (ret)
 351                         return ret;
 352
 353                 return 0;
 354         } else if (extract) {
 355                 ERR("no firmware for inspection specified");
 356                 return -1;
 357         }
 358
 359         if (board_id == NULL) {
 360                 ERR("no board specified");
 361                 return -1;
 362         }
 363
 364         board = find_board(board_id);
 365         if (board == NULL) {
 366                 ERR("unknown/unsupported board id \"%s\"", board_id);
 367                 return -1;
 368         }
 369         if (!kernel_la)
 370                 kernel_la = board->kernel_la;
 371         if (!kernel_ep)
 372                 kernel_ep = board->kernel_ep;
 373         if (!rootfs_ofs)
 374                 rootfs_ofs = board->rootfs_ofs;
 375
 376         if (kernel_info.file_name == NULL) {
 377                 ERR("no kernel image specified");
 378                 return -1;
 379         }
 380
 381         ret = get_file_stat(&kernel_info);
 382         if (ret)
 383                 return ret;
 384
 385         if (combined) {
 386                 if (kernel_info.file_size >
 387                     board->fw_max_len - sizeof(struct fw_header)) {
 388                         ERR("kernel image is too big");
 389                         return -1;
 390                 }
 391         } else {
 392                 if (kernel_info.file_size >
 393                     rootfs_ofs - sizeof(struct fw_header)) {
 394                         ERR("kernel image is too big");
 395                         return -1;
 396                 }
 397                 if (rootfs_info.file_name == NULL) {
 398                         ERR("no rootfs image specified");
 399                         return -1;
 400                 }
 401
 402                 ret = get_file_stat(&rootfs_info);
 403                 if (ret)
 404                         return ret;
 405
 406                 if (rootfs_info.file_size >
 407                     (board->fw_max_len - rootfs_ofs)) {
 408                         ERR("rootfs image is too big");
 409                         return -1;
 410                 }
 411         }
 412
 413         if (ofname == NULL) {
 414                 ERR("no output file specified");
 415                 return -1;
 416         }
 417
 418         return 0;
 419 }
 420
 421 static void fill_header(char *buf, int len)
 422 {
 423         struct fw_header *hdr = (struct fw_header *)buf;
 424
 425         memset(hdr, 0, sizeof(struct fw_header));
 426
 427         hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
 428         strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
 429         strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
 430         hdr->hw_id = HOST_TO_BE32(board->hw_id);
 431         hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
 432
 433         if (boot_info.file_size == 0)
 434                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
 435         else
 436                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
 437
 438         hdr->kernel_la = HOST_TO_BE32(kernel_la);
 439         hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
 440         hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
 441         hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
 442         hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
 443         if (!combined) {
 444                 hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
 445                 hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
 446         }
 447
 448         get_md5(buf, len, hdr->md5sum1);
 449 }
 450
 451 static int write_fw(char *data, int len)
 452 {
 453         FILE *f;
 454         int ret = EXIT_FAILURE;
 455
 456         f = fopen(ofname, "w");
 457         if (f == NULL) {
 458                 ERRS("could not open \"%s\" for writing", ofname);
 459                 goto out;
 460         }
 461
 462         errno = 0;
 463         fwrite(data, len, 1, f);
 464         if (errno) {
 465                 ERRS("unable to write output file");
 466                 goto out_flush;
 467         }
 468
 469         DBG("firmware file \"%s\" completed", ofname);
 470
 471         ret = EXIT_SUCCESS;
 472
 473  out_flush:
 474         fflush(f);
 475         fclose(f);
 476         if (ret != EXIT_SUCCESS) {
 477                 unlink(ofname);
 478         }
 479  out:
 480         return ret;
 481 }
 482
 483 static int build_fw(void)
 484 {
 485         int buflen;
 486         char *buf;
 487         char *p;
 488         int ret = EXIT_FAILURE;
 489         int writelen = 0;
 490
 491         buflen = board->fw_max_len;
 492
 493         buf = malloc(buflen);
 494         if (!buf) {
 495                 ERR("no memory for buffer\n");
 496                 goto out;
 497         }
 498
 499         memset(buf, 0xff, buflen);
 500         p = buf + sizeof(struct fw_header);
 501         ret = read_to_buf(&kernel_info, p);
 502         if (ret)
 503                 goto out_free_buf;
 504
 505         writelen = kernel_info.file_size;
 506
 507         if (!combined) {
 508                 p = buf + rootfs_ofs;
 509                 ret = read_to_buf(&rootfs_info, p);
 510                 if (ret)
 511                         goto out_free_buf;
 512
 513                 writelen = rootfs_ofs + rootfs_info.file_size;
 514         }
 515
 516         if (!strip_padding)
 517                 writelen = buflen;
 518
 519         fill_header(buf, writelen);
 520         ret = write_fw(buf, writelen);
 521         if (ret)
 522                 goto out_free_buf;
 523
 524         ret = EXIT_SUCCESS;
 525
 526  out_free_buf:
 527         free(buf);
 528  out:
 529         return ret;
 530 }
 531
 532 /* Helper functions to inspect_fw() representing different output formats */
 533 static inline void inspect_fw_pstr(char *label, char *str)
 534 {
 535         printf("%-23s: %s\n", label, str);
 536 }
 537
 538 static inline void inspect_fw_phex(char *label, uint32_t val)
 539 {
 540         printf("%-23s: 0x%08x\n", label, val);
 541 }
 542
 543 static inline void inspect_fw_phexpost(char *label,
 544                                        uint32_t val, char *post)
 545 {
 546         printf("%-23s: 0x%08x (%s)\n", label, val, post);
 547 }
 548
 549 static inline void inspect_fw_phexdef(char *label,
 550                                       uint32_t val, uint32_t defval)
 551 {
 552         printf("%-23s: 0x%08x                  ", label, val);
 553
 554         if (val == defval)
 555                 printf("(== OpenWrt default)\n");
 556         else
 557                 printf("(OpenWrt default: 0x%08x)\n", defval);
 558 }
 559
 560 static inline void inspect_fw_phexexp(char *label,
 561                                       uint32_t val, uint32_t expval)
 562 {
 563         printf("%-23s: 0x%08x ", label, val);
 564
 565         if (val == expval)
 566                 printf("(ok)\n");
 567         else
 568                 printf("(expected: 0x%08x)\n", expval);
 569 }
 570
 571 static inline void inspect_fw_phexdec(char *label, uint32_t val)
 572 {
 573         printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
 574 }
 575
 576 static inline void inspect_fw_phexdecdef(char *label,
 577                                          uint32_t val, uint32_t defval)
 578 {
 579         printf("%-23s: 0x%08x / %8u bytes ", label, val, 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_pmd5sum(char *label, uint8_t *val, char *text)
 588 {
 589         int i;
 590
 591         printf("%-23s:", label);
 592         for (i=0; i<MD5SUM_LEN; i++)
 593                 printf(" %02x", val[i]);
 594         printf(" %s\n", text);
 595 }
 596
 597 static int inspect_fw(void)
 598 {
 599         char *buf;
 600         struct fw_header *hdr;
 601         uint8_t md5sum[MD5SUM_LEN];
 602         struct board_info *board;
 603         int ret = EXIT_FAILURE;
 604
 605         buf = malloc(inspect_info.file_size);
 606         if (!buf) {
 607                 ERR("no memory for buffer!\n");
 608                 goto out;
 609         }
 610
 611         ret = read_to_buf(&inspect_info, buf);
 612         if (ret)
 613                 goto out_free_buf;
 614         hdr = (struct fw_header *)buf;
 615
 616         inspect_fw_pstr("File name", inspect_info.file_name);
 617         inspect_fw_phexdec("File size", inspect_info.file_size);
 618
 619         if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
 620                 ERR("file does not seem to have V1 header!\n");
 621                 goto out_free_buf;
 622         }
 623
 624         inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
 625
 626         if (BE32_TO_HOST(hdr->unk1) != 0)
 627                 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
 628
 629         memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
 630         if (BE32_TO_HOST(hdr->boot_len) == 0)
 631                 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
 632         else
 633                 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
 634         get_md5(buf, inspect_info.file_size, hdr->md5sum1);
 635
 636         if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
 637                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
 638                 inspect_fw_pmd5sum("          --> expected", hdr->md5sum1, "");
 639         } else {
 640                 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
 641         }
 642         if (BE32_TO_HOST(hdr->unk2) != 0)
 643                 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
 644         inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
 645                            "(purpose yet unknown, unchecked here)");
 646         if (BE32_TO_HOST(hdr->unk3) != 0)
 647                 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
 648
 649         printf("\n");
 650
 651         inspect_fw_pstr("Vendor name", hdr->vendor_name);
 652         inspect_fw_pstr("Firmware version", hdr->fw_version);
 653         board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
 654         if (board) {
 655                 inspect_fw_phexpost("Hardware ID",
 656                                     BE32_TO_HOST(hdr->hw_id), board->id);
 657                 inspect_fw_phexexp("Hardware Revision",
 658                                    BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
 659         } else {
 660                 inspect_fw_phexpost("Hardware ID",
 661                                     BE32_TO_HOST(hdr->hw_id), "unknown");
 662                 inspect_fw_phex("Hardware Revision",
 663                                 BE32_TO_HOST(hdr->hw_rev));
 664         }
 665
 666         printf("\n");
 667
 668         inspect_fw_phexdec("Kernel data offset",
 669                            BE32_TO_HOST(hdr->kernel_ofs));
 670         inspect_fw_phexdec("Kernel data length",
 671                            BE32_TO_HOST(hdr->kernel_len));
 672         if (board) {
 673                 inspect_fw_phexdef("Kernel load address",
 674                                    BE32_TO_HOST(hdr->kernel_la),
 675                                    board->kernel_la);
 676                 inspect_fw_phexdef("Kernel entry point",
 677                                    BE32_TO_HOST(hdr->kernel_ep),
 678                                    board->kernel_ep);
 679                 inspect_fw_phexdecdef("Rootfs data offset",
 680                                       BE32_TO_HOST(hdr->rootfs_ofs),
 681                                       board->rootfs_ofs);
 682         } else {
 683                 inspect_fw_phex("Kernel load address",
 684                                 BE32_TO_HOST(hdr->kernel_la));
 685                 inspect_fw_phex("Kernel entry point",
 686                                 BE32_TO_HOST(hdr->kernel_ep));
 687                 inspect_fw_phexdec("Rootfs data offset",
 688                                    BE32_TO_HOST(hdr->rootfs_ofs));
 689         }
 690         inspect_fw_phexdec("Rootfs data length",
 691                            BE32_TO_HOST(hdr->rootfs_len));
 692         inspect_fw_phexdec("Boot loader data offset",
 693                            BE32_TO_HOST(hdr->boot_ofs));
 694         inspect_fw_phexdec("Boot loader data length",
 695                            BE32_TO_HOST(hdr->boot_len));
 696         inspect_fw_phexdec("Total firmware length",
 697                            BE32_TO_HOST(hdr->fw_length));
 698
 699         if (extract) {
 700                 FILE *fp;
 701                 char *filename;
 702
 703                 printf("\n");
 704
 705                 filename = malloc(strlen(inspect_info.file_name) + 8);
 706                 sprintf(filename, "%s-kernel", inspect_info.file_name);
 707                 printf("Extracting kernel to \"%s\"...\n", filename);
 708                 fp = fopen(filename, "w");
 709                 if (fp) {
 710                         if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
 711                                     BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
 712                                 ERR("error in fwrite(): %s", strerror(errno));
 713                         }
 714                         fclose(fp);
 715                 } else {
 716                         ERR("error in fopen(): %s", strerror(errno));
 717                 }
 718                 free(filename);
 719
 720                 filename = malloc(strlen(inspect_info.file_name) + 8);
 721                 sprintf(filename, "%s-rootfs", inspect_info.file_name);
 722                 printf("Extracting rootfs to \"%s\"...\n", filename);
 723                 fp = fopen(filename, "w");
 724                 if (fp) {
 725                         if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
 726                                     BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
 727                                 ERR("error in fwrite(): %s", strerror(errno));
 728                         }
 729                         fclose(fp);
 730                 } else {
 731                         ERR("error in fopen(): %s", strerror(errno));
 732                 }
 733                 free(filename);
 734         }
 735
 736  out_free_buf:
 737         free(buf);
 738  out:
 739         return ret;
 740 }
 741
 742 int main(int argc, char *argv[])
 743 {
 744         int ret = EXIT_FAILURE;
 745         int err;
 746
 747         FILE *outfile;
 748
 749         progname = basename(argv[0]);
 750
 751         while ( 1 ) {
 752                 int c;
 753
 754                 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
 755                 if (c == -1)
 756                         break;
 757
 758                 switch (c) {
 759                 case 'B':
 760                         board_id = optarg;
 761                         break;
 762                 case 'E':
 763                         sscanf(optarg, "0x%x", &kernel_ep);
 764                         break;
 765                 case 'L':
 766                         sscanf(optarg, "0x%x", &kernel_la);
 767                         break;
 768                 case 'V':
 769                         version = optarg;
 770                         break;
 771                 case 'N':
 772                         vendor = optarg;
 773                         break;
 774                 case 'c':
 775                         combined++;
 776                         break;
 777                 case 'k':
 778                         kernel_info.file_name = optarg;
 779                         break;
 780                 case 'r':
 781                         rootfs_info.file_name = optarg;
 782                         break;
 783                 case 'R':
 784                         sscanf(optarg, "0x%x", &rootfs_ofs);
 785                         break;
 786                 case 'o':
 787                         ofname = optarg;
 788                         break;
 789                 case 's':
 790                         strip_padding = 1;
 791                         break;
 792                 case 'i':
 793                         inspect_info.file_name = optarg;
 794                         break;
 795                 case 'x':
 796                         extract = 1;
 797                         break;
 798                 case 'h':
 799                         usage(EXIT_SUCCESS);
 800                         break;
 801                 default:
 802                         usage(EXIT_FAILURE);
 803                         break;
 804                 }
 805         }
 806
 807         ret = check_options();
 808         if (ret)
 809                 goto out;
 810
 811         if (!inspect_info.file_name)
 812                 ret = build_fw();
 813         else
 814                 ret = inspect_fw();
 815
 816  out:
 817         return ret;
 818 }
 819