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170188c95d8df4a9a1e59dcb98f67b32553c0da8
[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 "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
Personal OpenWRT clone
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