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a1669cee5a4dc6a29cf831141306e4ce9579b954
[openwrt/openwrt.git] / 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 <arpa/inet.h>
26 #include <netinet/in.h>
27
28 #include "md5.h"
29
30 #define HEADER_VERSION_V1 0x01000000
31 #define HWID_TL_MR3220_V1 0x32200001
32 #define HWID_TL_MR3420_V1 0x34200001
33 #define HWID_TL_WA901ND_V1 0x09010001
34 #define HWID_TL_WA901ND_V2 0x09010002
35 #define HWID_TL_WR703N_V1 0x07030101
36 #define HWID_TL_WR741ND_V1 0x07410001
37 #define HWID_TL_WR741ND_V4 0x07410004
38 #define HWID_TL_WR740N_V1 0x07400001
39 #define HWID_TL_WR740N_V3 0x07400003
40 #define HWID_TL_WR743ND_V1 0x07430001
41 #define HWID_TL_WR841N_V1_5 0x08410002
42 #define HWID_TL_WR841ND_V3 0x08410003
43 #define HWID_TL_WR841ND_V5 0x08410005
44 #define HWID_TL_WR841ND_V7 0x08410007
45 #define HWID_TL_WR941ND_V2 0x09410002
46 #define HWID_TL_WR941ND_V4 0x09410004
47 #define HWID_TL_WR1043ND_V1 0x10430001
48
49 #define MD5SUM_LEN 16
50
51 struct file_info {
52 char *file_name; /* name of the file */
53 uint32_t file_size; /* length of the file */
54 };
55
56 struct fw_header {
57 uint32_t version; /* header version */
58 char vendor_name[24];
59 char fw_version[36];
60 uint32_t hw_id; /* hardware id */
61 uint32_t hw_rev; /* hardware revision */
62 uint32_t unk1;
63 uint8_t md5sum1[MD5SUM_LEN];
64 uint32_t unk2;
65 uint8_t md5sum2[MD5SUM_LEN];
66 uint32_t unk3;
67 uint32_t kernel_la; /* kernel load address */
68 uint32_t kernel_ep; /* kernel entry point */
69 uint32_t fw_length; /* total length of the firmware */
70 uint32_t kernel_ofs; /* kernel data offset */
71 uint32_t kernel_len; /* kernel data length */
72 uint32_t rootfs_ofs; /* rootfs data offset */
73 uint32_t rootfs_len; /* rootfs data length */
74 uint32_t boot_ofs; /* bootloader data offset */
75 uint32_t boot_len; /* bootloader data length */
76 uint8_t pad[360];
77 } __attribute__ ((packed));
78
79 struct board_info {
80 char *id;
81 uint32_t hw_id;
82 uint32_t hw_rev;
83 uint32_t fw_max_len;
84 uint32_t kernel_la;
85 uint32_t kernel_ep;
86 uint32_t rootfs_ofs;
87 };
88
89 /*
90 * Globals
91 */
92 static char *ofname;
93 static char *progname;
94 static char *vendor = "TP-LINK Technologies";
95 static char *version = "ver. 1.0";
96
97 static char *board_id;
98 static struct board_info *board;
99 static struct file_info kernel_info;
100 static uint32_t kernel_la = 0;
101 static uint32_t kernel_ep = 0;
102 static struct file_info rootfs_info;
103 static uint32_t rootfs_ofs = 0;
104 static struct file_info boot_info;
105 static int combined;
106 static int strip_padding;
107
108 static struct file_info inspect_info;
109 static int extract = 0;
110
111 char md5salt_normal[MD5SUM_LEN] = {
112 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
113 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
114 };
115
116 char md5salt_boot[MD5SUM_LEN] = {
117 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
118 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
119 };
120
121 static struct board_info boards[] = {
122 {
123 .id = "TL-MR3220v1",
124 .hw_id = HWID_TL_MR3220_V1,
125 .hw_rev = 1,
126 .fw_max_len = 0x3c0000,
127 .kernel_la = 0x80060000,
128 .kernel_ep = 0x80060000,
129 .rootfs_ofs = 0x140000,
130 }, {
131 .id = "TL-MR3420v1",
132 .hw_id = HWID_TL_MR3420_V1,
133 .hw_rev = 1,
134 .fw_max_len = 0x3c0000,
135 .kernel_la = 0x80060000,
136 .kernel_ep = 0x80060000,
137 .rootfs_ofs = 0x140000,
138 }, {
139 .id = "TL-WA901NDv1",
140 .hw_id = HWID_TL_WA901ND_V1,
141 .hw_rev = 1,
142 .fw_max_len = 0x3c0000,
143 .kernel_la = 0x80060000,
144 .kernel_ep = 0x80060000,
145 .rootfs_ofs = 0x140000,
146 }, {
147 .id = "TL-WA901NDv2",
148 .hw_id = HWID_TL_WA901ND_V2,
149 .hw_rev = 1,
150 .fw_max_len = 0x3c0000,
151 .kernel_la = 0x80060000,
152 .kernel_ep = 0x80060000,
153 .rootfs_ofs = 0x140000,
154 }, {
155 .id = "TL-WR741NDv1",
156 .hw_id = HWID_TL_WR741ND_V1,
157 .hw_rev = 1,
158 .fw_max_len = 0x3c0000,
159 .kernel_la = 0x80060000,
160 .kernel_ep = 0x80060000,
161 .rootfs_ofs = 0x140000,
162 }, {
163 .id = "TL-WR741NDv4",
164 .hw_id = HWID_TL_WR741ND_V4,
165 .hw_rev = 1,
166 .fw_max_len = 0x3c0000,
167 .kernel_la = 0x80060000,
168 .kernel_ep = 0x80060000,
169 .rootfs_ofs = 0x100000,
170 }, {
171 .id = "TL-WR740Nv1",
172 .hw_id = HWID_TL_WR740N_V1,
173 .hw_rev = 1,
174 .fw_max_len = 0x3c0000,
175 .kernel_la = 0x80060000,
176 .kernel_ep = 0x80060000,
177 .rootfs_ofs = 0x140000,
178 }, {
179 .id = "TL-WR740Nv3",
180 .hw_id = HWID_TL_WR740N_V3,
181 .hw_rev = 1,
182 .fw_max_len = 0x3c0000,
183 .kernel_la = 0x80060000,
184 .kernel_ep = 0x80060000,
185 .rootfs_ofs = 0x140000,
186 }, {
187 .id = "TL-WR743NDv1",
188 .hw_id = HWID_TL_WR743ND_V1,
189 .hw_rev = 1,
190 .fw_max_len = 0x3c0000,
191 .kernel_la = 0x80060000,
192 .kernel_ep = 0x80060000,
193 .rootfs_ofs = 0x140000,
194 }, {
195 .id = "TL-WR841Nv1.5",
196 .hw_id = HWID_TL_WR841N_V1_5,
197 .hw_rev = 2,
198 .fw_max_len = 0x3c0000,
199 .kernel_la = 0x80060000,
200 .kernel_ep = 0x80060000,
201 .rootfs_ofs = 0x140000,
202 }, {
203 .id = "TL-WR841NDv3",
204 .hw_id = HWID_TL_WR841ND_V3,
205 .hw_rev = 3,
206 .fw_max_len = 0x3c0000,
207 .kernel_la = 0x80060000,
208 .kernel_ep = 0x80060000,
209 .rootfs_ofs = 0x140000,
210 }, {
211 .id = "TL-WR841NDv5",
212 .hw_id = HWID_TL_WR841ND_V5,
213 .hw_rev = 1,
214 .fw_max_len = 0x3c0000,
215 .kernel_la = 0x80060000,
216 .kernel_ep = 0x80060000,
217 .rootfs_ofs = 0x140000,
218 }, {
219 .id = "TL-WR841NDv7",
220 .hw_id = HWID_TL_WR841ND_V7,
221 .hw_rev = 1,
222 .fw_max_len = 0x3c0000,
223 .kernel_la = 0x80060000,
224 .kernel_ep = 0x80060000,
225 .rootfs_ofs = 0x140000,
226 }, {
227 .id = "TL-WR941NDv2",
228 .hw_id = HWID_TL_WR941ND_V2,
229 .hw_rev = 2,
230 .fw_max_len = 0x3c0000,
231 .kernel_la = 0x80060000,
232 .kernel_ep = 0x80060000,
233 .rootfs_ofs = 0x140000,
234 }, {
235 .id = "TL-WR941NDv4",
236 .hw_id = HWID_TL_WR941ND_V4,
237 .hw_rev = 1,
238 .fw_max_len = 0x3c0000,
239 .kernel_la = 0x80060000,
240 .kernel_ep = 0x80060000,
241 .rootfs_ofs = 0x140000,
242 }, {
243 .id = "TL-WR1043NDv1",
244 .hw_id = HWID_TL_WR1043ND_V1,
245 .hw_rev = 1,
246 .fw_max_len = 0x7c0000,
247 .kernel_la = 0x80060000,
248 .kernel_ep = 0x80060000,
249 .rootfs_ofs = 0x140000,
250 }, {
251 .id = "TL-WR703Nv1",
252 .hw_id = HWID_TL_WR703N_V1,
253 .hw_rev = 1,
254 .fw_max_len = 0x3c0000,
255 .kernel_la = 0x80060000,
256 .kernel_ep = 0x80060000,
257 .rootfs_ofs = 0x100000,
258 }, {
259 /* terminating entry */
260 }
261 };
262
263 /*
264 * Message macros
265 */
266 #define ERR(fmt, ...) do { \
267 fflush(0); \
268 fprintf(stderr, "[%s] *** error: " fmt "\n", \
269 progname, ## __VA_ARGS__ ); \
270 } while (0)
271
272 #define ERRS(fmt, ...) do { \
273 int save = errno; \
274 fflush(0); \
275 fprintf(stderr, "[%s] *** error: " fmt "\n", \
276 progname, ## __VA_ARGS__, strerror(save)); \
277 } while (0)
278
279 #define DBG(fmt, ...) do { \
280 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
281 } while (0)
282
283 static struct board_info *find_board(char *id)
284 {
285 struct board_info *ret;
286 struct board_info *board;
287
288 ret = NULL;
289 for (board = boards; board->id != NULL; board++){
290 if (strcasecmp(id, board->id) == 0) {
291 ret = board;
292 break;
293 }
294 };
295
296 return ret;
297 }
298
299 static struct board_info *find_board_by_hwid(uint32_t hw_id)
300 {
301 struct board_info *board;
302
303 for (board = boards; board->id != NULL; board++) {
304 if (hw_id == board->hw_id)
305 return board;
306 };
307
308 return NULL;
309 }
310
311
312 static void usage(int status)
313 {
314 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
315 struct board_info *board;
316
317 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
318 fprintf(stream,
319 "\n"
320 "Options:\n"
321 " -B <board> create image for the board specified with <board>\n"
322 " -c use combined kernel image\n"
323 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
324 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
325 " -k <file> read kernel image from the file <file>\n"
326 " -r <file> read rootfs image from the file <file>\n"
327 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
328 " -o <file> write output to the file <file>\n"
329 " -s strip padding from the end of the image\n"
330 " -N <vendor> set image vendor to <vendor>\n"
331 " -V <version> set image version to <version>\n"
332 " -i <file> inspect given firmware file <file>\n"
333 " -x extract kernel and rootfs while inspecting (requires -i)\n"
334 " -h show this screen\n"
335 );
336
337 exit(status);
338 }
339
340 static int get_md5(char *data, int size, char *md5)
341 {
342 MD5_CTX ctx;
343
344 MD5_Init(&ctx);
345 MD5_Update(&ctx, data, size);
346 MD5_Final(md5, &ctx);
347 }
348
349 static int get_file_stat(struct file_info *fdata)
350 {
351 struct stat st;
352 int res;
353
354 if (fdata->file_name == NULL)
355 return 0;
356
357 res = stat(fdata->file_name, &st);
358 if (res){
359 ERRS("stat failed on %s", fdata->file_name);
360 return res;
361 }
362
363 fdata->file_size = st.st_size;
364 return 0;
365 }
366
367 static int read_to_buf(struct file_info *fdata, char *buf)
368 {
369 FILE *f;
370 int ret = EXIT_FAILURE;
371
372 f = fopen(fdata->file_name, "r");
373 if (f == NULL) {
374 ERRS("could not open \"%s\" for reading", fdata->file_name);
375 goto out;
376 }
377
378 errno = 0;
379 fread(buf, fdata->file_size, 1, f);
380 if (errno != 0) {
381 ERRS("unable to read from file \"%s\"", fdata->file_name);
382 goto out_close;
383 }
384
385 ret = EXIT_SUCCESS;
386
387 out_close:
388 fclose(f);
389 out:
390 return ret;
391 }
392
393 static int check_options(void)
394 {
395 int ret;
396
397 if (inspect_info.file_name) {
398 ret = get_file_stat(&inspect_info);
399 if (ret)
400 return ret;
401
402 return 0;
403 } else if (extract) {
404 ERR("no firmware for inspection specified");
405 return -1;
406 }
407
408 if (board_id == NULL) {
409 ERR("no board specified");
410 return -1;
411 }
412
413 board = find_board(board_id);
414 if (board == NULL) {
415 ERR("unknown/unsupported board id \"%s\"", board_id);
416 return -1;
417 }
418 if (!kernel_la)
419 kernel_la = board->kernel_la;
420 if (!kernel_ep)
421 kernel_ep = board->kernel_ep;
422 if (!rootfs_ofs)
423 rootfs_ofs = board->rootfs_ofs;
424
425 if (kernel_info.file_name == NULL) {
426 ERR("no kernel image specified");
427 return -1;
428 }
429
430 ret = get_file_stat(&kernel_info);
431 if (ret)
432 return ret;
433
434 if (combined) {
435 if (kernel_info.file_size >
436 board->fw_max_len - sizeof(struct fw_header)) {
437 ERR("kernel image is too big");
438 return -1;
439 }
440 } else {
441 if (kernel_info.file_size >
442 rootfs_ofs - sizeof(struct fw_header)) {
443 ERR("kernel image is too big");
444 return -1;
445 }
446 if (rootfs_info.file_name == NULL) {
447 ERR("no rootfs image specified");
448 return -1;
449 }
450
451 ret = get_file_stat(&rootfs_info);
452 if (ret)
453 return ret;
454
455 if (rootfs_info.file_size >
456 (board->fw_max_len - rootfs_ofs)) {
457 ERR("rootfs image is too big");
458 return -1;
459 }
460 }
461
462 if (ofname == NULL) {
463 ERR("no output file specified");
464 return -1;
465 }
466
467 return 0;
468 }
469
470 static void fill_header(char *buf, int len)
471 {
472 struct fw_header *hdr = (struct fw_header *)buf;
473
474 memset(hdr, 0, sizeof(struct fw_header));
475
476 hdr->version = htonl(HEADER_VERSION_V1);
477 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
478 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
479 hdr->hw_id = htonl(board->hw_id);
480 hdr->hw_rev = htonl(board->hw_rev);
481
482 if (boot_info.file_size == 0)
483 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
484 else
485 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
486
487 hdr->kernel_la = htonl(kernel_la);
488 hdr->kernel_ep = htonl(kernel_ep);
489 hdr->fw_length = htonl(board->fw_max_len);
490 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
491 hdr->kernel_len = htonl(kernel_info.file_size);
492 if (!combined) {
493 hdr->rootfs_ofs = htonl(rootfs_ofs);
494 hdr->rootfs_len = htonl(rootfs_info.file_size);
495 }
496
497 get_md5(buf, len, hdr->md5sum1);
498 }
499
500 static int write_fw(char *data, int len)
501 {
502 FILE *f;
503 int ret = EXIT_FAILURE;
504
505 f = fopen(ofname, "w");
506 if (f == NULL) {
507 ERRS("could not open \"%s\" for writing", ofname);
508 goto out;
509 }
510
511 errno = 0;
512 fwrite(data, len, 1, f);
513 if (errno) {
514 ERRS("unable to write output file");
515 goto out_flush;
516 }
517
518 DBG("firmware file \"%s\" completed", ofname);
519
520 ret = EXIT_SUCCESS;
521
522 out_flush:
523 fflush(f);
524 fclose(f);
525 if (ret != EXIT_SUCCESS) {
526 unlink(ofname);
527 }
528 out:
529 return ret;
530 }
531
532 static int build_fw(void)
533 {
534 int buflen;
535 char *buf;
536 char *p;
537 int ret = EXIT_FAILURE;
538 int writelen = 0;
539
540 buflen = board->fw_max_len;
541
542 buf = malloc(buflen);
543 if (!buf) {
544 ERR("no memory for buffer\n");
545 goto out;
546 }
547
548 memset(buf, 0xff, buflen);
549 p = buf + sizeof(struct fw_header);
550 ret = read_to_buf(&kernel_info, p);
551 if (ret)
552 goto out_free_buf;
553
554 writelen = sizeof(struct fw_header) + kernel_info.file_size;
555
556 if (!combined) {
557 p = buf + rootfs_ofs;
558 ret = read_to_buf(&rootfs_info, p);
559 if (ret)
560 goto out_free_buf;
561
562 writelen = rootfs_ofs + rootfs_info.file_size;
563 }
564
565 if (!strip_padding)
566 writelen = buflen;
567
568 fill_header(buf, writelen);
569 ret = write_fw(buf, writelen);
570 if (ret)
571 goto out_free_buf;
572
573 ret = EXIT_SUCCESS;
574
575 out_free_buf:
576 free(buf);
577 out:
578 return ret;
579 }
580
581 /* Helper functions to inspect_fw() representing different output formats */
582 static inline void inspect_fw_pstr(char *label, char *str)
583 {
584 printf("%-23s: %s\n", label, str);
585 }
586
587 static inline void inspect_fw_phex(char *label, uint32_t val)
588 {
589 printf("%-23s: 0x%08x\n", label, val);
590 }
591
592 static inline void inspect_fw_phexpost(char *label,
593 uint32_t val, char *post)
594 {
595 printf("%-23s: 0x%08x (%s)\n", label, val, post);
596 }
597
598 static inline void inspect_fw_phexdef(char *label,
599 uint32_t val, uint32_t defval)
600 {
601 printf("%-23s: 0x%08x ", label, val);
602
603 if (val == defval)
604 printf("(== OpenWrt default)\n");
605 else
606 printf("(OpenWrt default: 0x%08x)\n", defval);
607 }
608
609 static inline void inspect_fw_phexexp(char *label,
610 uint32_t val, uint32_t expval)
611 {
612 printf("%-23s: 0x%08x ", label, val);
613
614 if (val == expval)
615 printf("(ok)\n");
616 else
617 printf("(expected: 0x%08x)\n", expval);
618 }
619
620 static inline void inspect_fw_phexdec(char *label, uint32_t val)
621 {
622 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
623 }
624
625 static inline void inspect_fw_phexdecdef(char *label,
626 uint32_t val, uint32_t defval)
627 {
628 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
629
630 if (val == defval)
631 printf("(== OpenWrt default)\n");
632 else
633 printf("(OpenWrt default: 0x%08x)\n", defval);
634 }
635
636 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
637 {
638 int i;
639
640 printf("%-23s:", label);
641 for (i=0; i<MD5SUM_LEN; i++)
642 printf(" %02x", val[i]);
643 printf(" %s\n", text);
644 }
645
646 static int inspect_fw(void)
647 {
648 char *buf;
649 struct fw_header *hdr;
650 uint8_t md5sum[MD5SUM_LEN];
651 struct board_info *board;
652 int ret = EXIT_FAILURE;
653
654 buf = malloc(inspect_info.file_size);
655 if (!buf) {
656 ERR("no memory for buffer!\n");
657 goto out;
658 }
659
660 ret = read_to_buf(&inspect_info, buf);
661 if (ret)
662 goto out_free_buf;
663 hdr = (struct fw_header *)buf;
664
665 inspect_fw_pstr("File name", inspect_info.file_name);
666 inspect_fw_phexdec("File size", inspect_info.file_size);
667
668 if (ntohl(hdr->version) != HEADER_VERSION_V1) {
669 ERR("file does not seem to have V1 header!\n");
670 goto out_free_buf;
671 }
672
673 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
674
675 if (ntohl(hdr->unk1) != 0)
676 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
677
678 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
679 if (ntohl(hdr->boot_len) == 0)
680 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
681 else
682 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
683 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
684
685 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
686 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
687 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
688 } else {
689 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
690 }
691 if (ntohl(hdr->unk2) != 0)
692 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
693 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
694 "(purpose yet unknown, unchecked here)");
695 if (ntohl(hdr->unk3) != 0)
696 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
697
698 printf("\n");
699
700 inspect_fw_pstr("Vendor name", hdr->vendor_name);
701 inspect_fw_pstr("Firmware version", hdr->fw_version);
702 board = find_board_by_hwid(ntohl(hdr->hw_id));
703 if (board) {
704 inspect_fw_phexpost("Hardware ID",
705 ntohl(hdr->hw_id), board->id);
706 inspect_fw_phexexp("Hardware Revision",
707 ntohl(hdr->hw_rev), board->hw_rev);
708 } else {
709 inspect_fw_phexpost("Hardware ID",
710 ntohl(hdr->hw_id), "unknown");
711 inspect_fw_phex("Hardware Revision",
712 ntohl(hdr->hw_rev));
713 }
714
715 printf("\n");
716
717 inspect_fw_phexdec("Kernel data offset",
718 ntohl(hdr->kernel_ofs));
719 inspect_fw_phexdec("Kernel data length",
720 ntohl(hdr->kernel_len));
721 if (board) {
722 inspect_fw_phexdef("Kernel load address",
723 ntohl(hdr->kernel_la),
724 board->kernel_la);
725 inspect_fw_phexdef("Kernel entry point",
726 ntohl(hdr->kernel_ep),
727 board->kernel_ep);
728 inspect_fw_phexdecdef("Rootfs data offset",
729 ntohl(hdr->rootfs_ofs),
730 board->rootfs_ofs);
731 } else {
732 inspect_fw_phex("Kernel load address",
733 ntohl(hdr->kernel_la));
734 inspect_fw_phex("Kernel entry point",
735 ntohl(hdr->kernel_ep));
736 inspect_fw_phexdec("Rootfs data offset",
737 ntohl(hdr->rootfs_ofs));
738 }
739 inspect_fw_phexdec("Rootfs data length",
740 ntohl(hdr->rootfs_len));
741 inspect_fw_phexdec("Boot loader data offset",
742 ntohl(hdr->boot_ofs));
743 inspect_fw_phexdec("Boot loader data length",
744 ntohl(hdr->boot_len));
745 inspect_fw_phexdec("Total firmware length",
746 ntohl(hdr->fw_length));
747
748 if (extract) {
749 FILE *fp;
750 char *filename;
751
752 printf("\n");
753
754 filename = malloc(strlen(inspect_info.file_name) + 8);
755 sprintf(filename, "%s-kernel", inspect_info.file_name);
756 printf("Extracting kernel to \"%s\"...\n", filename);
757 fp = fopen(filename, "w");
758 if (fp) {
759 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
760 ntohl(hdr->kernel_len), 1, fp)) {
761 ERR("error in fwrite(): %s", strerror(errno));
762 }
763 fclose(fp);
764 } else {
765 ERR("error in fopen(): %s", strerror(errno));
766 }
767 free(filename);
768
769 filename = malloc(strlen(inspect_info.file_name) + 8);
770 sprintf(filename, "%s-rootfs", inspect_info.file_name);
771 printf("Extracting rootfs to \"%s\"...\n", filename);
772 fp = fopen(filename, "w");
773 if (fp) {
774 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
775 ntohl(hdr->rootfs_len), 1, fp)) {
776 ERR("error in fwrite(): %s", strerror(errno));
777 }
778 fclose(fp);
779 } else {
780 ERR("error in fopen(): %s", strerror(errno));
781 }
782 free(filename);
783 }
784
785 out_free_buf:
786 free(buf);
787 out:
788 return ret;
789 }
790
791 int main(int argc, char *argv[])
792 {
793 int ret = EXIT_FAILURE;
794 int err;
795
796 FILE *outfile;
797
798 progname = basename(argv[0]);
799
800 while ( 1 ) {
801 int c;
802
803 c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
804 if (c == -1)
805 break;
806
807 switch (c) {
808 case 'B':
809 board_id = optarg;
810 break;
811 case 'E':
812 sscanf(optarg, "0x%x", &kernel_ep);
813 break;
814 case 'L':
815 sscanf(optarg, "0x%x", &kernel_la);
816 break;
817 case 'V':
818 version = optarg;
819 break;
820 case 'N':
821 vendor = optarg;
822 break;
823 case 'c':
824 combined++;
825 break;
826 case 'k':
827 kernel_info.file_name = optarg;
828 break;
829 case 'r':
830 rootfs_info.file_name = optarg;
831 break;
832 case 'R':
833 sscanf(optarg, "0x%x", &rootfs_ofs);
834 break;
835 case 'o':
836 ofname = optarg;
837 break;
838 case 's':
839 strip_padding = 1;
840 break;
841 case 'i':
842 inspect_info.file_name = optarg;
843 break;
844 case 'x':
845 extract = 1;
846 break;
847 case 'h':
848 usage(EXIT_SUCCESS);
849 break;
850 default:
851 usage(EXIT_FAILURE);
852 break;
853 }
854 }
855
856 ret = check_options();
857 if (ret)
858 goto out;
859
860 if (!inspect_info.file_name)
861 ret = build_fw();
862 else
863 ret = inspect_fw();
864
865 out:
866 return ret;
867 }
868
OpenWrt Source Repository