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firmware-utils/mktplinkfw: add support for the TL-WR1041N v2
[openwrt/svn-archive/archive.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 ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
31
32 #define HEADER_VERSION_V1 0x01000000
33 #define HWID_TL_MR3020_V1 0x30200001
34 #define HWID_TL_MR3220_V1 0x32200001
35 #define HWID_TL_MR3420_V1 0x34200001
36 #define HWID_TL_WA701N_V1 0x07010001
37 #define HWID_TL_WA901ND_V1 0x09010001
38 #define HWID_TL_WA901ND_V2 0x09010002
39 #define HWID_TL_WR703N_V1 0x07030101
40 #define HWID_TL_WR741ND_V1 0x07410001
41 #define HWID_TL_WR741ND_V4 0x07410004
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 #define HWID_TL_WR1041N_V2 0x10410002
53 #define HWID_TL_WR2543N_V1 0x25430001
54
55 #define MD5SUM_LEN 16
56
57 struct file_info {
58 char *file_name; /* name of the file */
59 uint32_t file_size; /* length of the file */
60 };
61
62 struct fw_header {
63 uint32_t version; /* header version */
64 char vendor_name[24];
65 char fw_version[36];
66 uint32_t hw_id; /* hardware id */
67 uint32_t hw_rev; /* hardware revision */
68 uint32_t unk1;
69 uint8_t md5sum1[MD5SUM_LEN];
70 uint32_t unk2;
71 uint8_t md5sum2[MD5SUM_LEN];
72 uint32_t unk3;
73 uint32_t kernel_la; /* kernel load address */
74 uint32_t kernel_ep; /* kernel entry point */
75 uint32_t fw_length; /* total length of the firmware */
76 uint32_t kernel_ofs; /* kernel data offset */
77 uint32_t kernel_len; /* kernel data length */
78 uint32_t rootfs_ofs; /* rootfs data offset */
79 uint32_t rootfs_len; /* rootfs data length */
80 uint32_t boot_ofs; /* bootloader data offset */
81 uint32_t boot_len; /* bootloader data length */
82 uint8_t pad[360];
83 } __attribute__ ((packed));
84
85 struct flash_layout {
86 char *id;
87 uint32_t fw_max_len;
88 uint32_t kernel_la;
89 uint32_t kernel_ep;
90 uint32_t rootfs_ofs;
91 };
92
93 struct board_info {
94 char *id;
95 uint32_t hw_id;
96 uint32_t hw_rev;
97 char *layout_id;
98 };
99
100 /*
101 * Globals
102 */
103 static char *ofname;
104 static char *progname;
105 static char *vendor = "TP-LINK Technologies";
106 static char *version = "ver. 1.0";
107
108 static char *board_id;
109 static struct board_info *board;
110 static char *layout_id;
111 static struct flash_layout *layout;
112 static char *opt_hw_id;
113 static uint32_t hw_id;
114 static char *opt_hw_rev;
115 static uint32_t hw_rev;
116 static struct file_info kernel_info;
117 static uint32_t kernel_la = 0;
118 static uint32_t kernel_ep = 0;
119 static uint32_t kernel_len = 0;
120 static struct file_info rootfs_info;
121 static uint32_t rootfs_ofs = 0;
122 static uint32_t rootfs_align;
123 static struct file_info boot_info;
124 static int combined;
125 static int strip_padding;
126 static int add_jffs2_eof;
127 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
128
129 static struct file_info inspect_info;
130 static int extract = 0;
131
132 char md5salt_normal[MD5SUM_LEN] = {
133 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
134 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
135 };
136
137 char md5salt_boot[MD5SUM_LEN] = {
138 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
139 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
140 };
141
142 static struct flash_layout layouts[] = {
143 {
144 .id = "4M",
145 .fw_max_len = 0x3c0000,
146 .kernel_la = 0x80060000,
147 .kernel_ep = 0x80060000,
148 .rootfs_ofs = 0x140000,
149 }, {
150 .id = "4Mlzma",
151 .fw_max_len = 0x3c0000,
152 .kernel_la = 0x80060000,
153 .kernel_ep = 0x80060000,
154 .rootfs_ofs = 0x100000,
155 }, {
156 .id = "8M",
157 .fw_max_len = 0x7c0000,
158 .kernel_la = 0x80060000,
159 .kernel_ep = 0x80060000,
160 .rootfs_ofs = 0x140000,
161 }, {
162 .id = "8Mlzma",
163 .fw_max_len = 0x7c0000,
164 .kernel_la = 0x80060000,
165 .kernel_ep = 0x80060000,
166 .rootfs_ofs = 0x100000,
167 }, {
168 /* terminating entry */
169 }
170 };
171
172 static struct board_info boards[] = {
173 {
174 .id = "TL-MR3020v1",
175 .hw_id = HWID_TL_MR3020_V1,
176 .hw_rev = 1,
177 .layout_id = "4Mlzma",
178 }, {
179 .id = "TL-MR3220v1",
180 .hw_id = HWID_TL_MR3220_V1,
181 .hw_rev = 1,
182 .layout_id = "4M",
183 }, {
184 .id = "TL-MR3420v1",
185 .hw_id = HWID_TL_MR3420_V1,
186 .hw_rev = 1,
187 .layout_id = "4M",
188 }, {
189 .id = "TL-WA701Nv1",
190 .hw_id = HWID_TL_WA701N_V1,
191 .hw_rev = 1,
192 .layout_id = "4M",
193 }, {
194 .id = "TL-WA901NDv1",
195 .hw_id = HWID_TL_WA901ND_V1,
196 .hw_rev = 1,
197 .layout_id = "4M",
198 }, {
199 .id = "TL-WA901NDv2",
200 .hw_id = HWID_TL_WA901ND_V2,
201 .hw_rev = 1,
202 .layout_id = "4M",
203 }, {
204 .id = "TL-WR741NDv1",
205 .hw_id = HWID_TL_WR741ND_V1,
206 .hw_rev = 1,
207 .layout_id = "4M",
208 }, {
209 .id = "TL-WR741NDv4",
210 .hw_id = HWID_TL_WR741ND_V4,
211 .hw_rev = 1,
212 .layout_id = "4Mlzma",
213 }, {
214 .id = "TL-WR740Nv1",
215 .hw_id = HWID_TL_WR740N_V1,
216 .hw_rev = 1,
217 .layout_id = "4M",
218 }, {
219 .id = "TL-WR740Nv3",
220 .hw_id = HWID_TL_WR740N_V3,
221 .hw_rev = 1,
222 .layout_id = "4M",
223 }, {
224 .id = "TL-WR743NDv1",
225 .hw_id = HWID_TL_WR743ND_V1,
226 .hw_rev = 1,
227 .layout_id = "4M",
228 }, {
229 .id = "TL-WR841Nv1.5",
230 .hw_id = HWID_TL_WR841N_V1_5,
231 .hw_rev = 2,
232 .layout_id = "4M",
233 }, {
234 .id = "TL-WR841NDv3",
235 .hw_id = HWID_TL_WR841ND_V3,
236 .hw_rev = 3,
237 .layout_id = "4M",
238 }, {
239 .id = "TL-WR841NDv5",
240 .hw_id = HWID_TL_WR841ND_V5,
241 .hw_rev = 1,
242 .layout_id = "4M",
243 }, {
244 .id = "TL-WR841NDv7",
245 .hw_id = HWID_TL_WR841ND_V7,
246 .hw_rev = 1,
247 .layout_id = "4M",
248 }, {
249 .id = "TL-WR941NDv2",
250 .hw_id = HWID_TL_WR941ND_V2,
251 .hw_rev = 2,
252 .layout_id = "4M",
253 }, {
254 .id = "TL-WR941NDv4",
255 .hw_id = HWID_TL_WR941ND_V4,
256 .hw_rev = 1,
257 .layout_id = "4M",
258 }, {
259 .id = "TL-WR1041Nv2",
260 .hw_id = HWID_TL_WR1041N_V2,
261 .hw_rev = 1,
262 .layout_id = "4Mlzma",
263 }, {
264 .id = "TL-WR1043NDv1",
265 .hw_id = HWID_TL_WR1043ND_V1,
266 .hw_rev = 1,
267 .layout_id = "8M",
268 }, {
269 .id = "TL-WR2543Nv1",
270 .hw_id = HWID_TL_WR2543N_V1,
271 .hw_rev = 1,
272 .layout_id = "8Mlzma",
273 }, {
274 .id = "TL-WR703Nv1",
275 .hw_id = HWID_TL_WR703N_V1,
276 .hw_rev = 1,
277 .layout_id = "4Mlzma",
278 }, {
279 /* terminating entry */
280 }
281 };
282
283 /*
284 * Message macros
285 */
286 #define ERR(fmt, ...) do { \
287 fflush(0); \
288 fprintf(stderr, "[%s] *** error: " fmt "\n", \
289 progname, ## __VA_ARGS__ ); \
290 } while (0)
291
292 #define ERRS(fmt, ...) do { \
293 int save = errno; \
294 fflush(0); \
295 fprintf(stderr, "[%s] *** error: " fmt "\n", \
296 progname, ## __VA_ARGS__, strerror(save)); \
297 } while (0)
298
299 #define DBG(fmt, ...) do { \
300 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
301 } while (0)
302
303 static struct board_info *find_board(char *id)
304 {
305 struct board_info *ret;
306 struct board_info *board;
307
308 ret = NULL;
309 for (board = boards; board->id != NULL; board++){
310 if (strcasecmp(id, board->id) == 0) {
311 ret = board;
312 break;
313 }
314 };
315
316 return ret;
317 }
318
319 static struct board_info *find_board_by_hwid(uint32_t hw_id)
320 {
321 struct board_info *board;
322
323 for (board = boards; board->id != NULL; board++) {
324 if (hw_id == board->hw_id)
325 return board;
326 };
327
328 return NULL;
329 }
330
331 static struct flash_layout *find_layout(char *id)
332 {
333 struct flash_layout *ret;
334 struct flash_layout *l;
335
336 ret = NULL;
337 for (l = layouts; l->id != NULL; l++){
338 if (strcasecmp(id, l->id) == 0) {
339 ret = l;
340 break;
341 }
342 };
343
344 return ret;
345 }
346
347 static void usage(int status)
348 {
349 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
350 struct board_info *board;
351
352 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
353 fprintf(stream,
354 "\n"
355 "Options:\n"
356 " -B <board> create image for the board specified with <board>\n"
357 " -c use combined kernel image\n"
358 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
359 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
360 " -H <hwid> use hardware id specified with <hwid>\n"
361 " -F <id> use flash layout specified with <id>\n"
362 " -k <file> read kernel image from the file <file>\n"
363 " -r <file> read rootfs image from the file <file>\n"
364 " -a <align> align the rootfs start on an <align> bytes boundary\n"
365 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
366 " -o <file> write output to the file <file>\n"
367 " -s strip padding from the end of the image\n"
368 " -j add jffs2 end-of-filesystem markers\n"
369 " -N <vendor> set image vendor to <vendor>\n"
370 " -V <version> set image version to <version>\n"
371 " -i <file> inspect given firmware file <file>\n"
372 " -x extract kernel and rootfs while inspecting (requires -i)\n"
373 " -h show this screen\n"
374 );
375
376 exit(status);
377 }
378
379 static int get_md5(char *data, int size, char *md5)
380 {
381 MD5_CTX ctx;
382
383 MD5_Init(&ctx);
384 MD5_Update(&ctx, data, size);
385 MD5_Final(md5, &ctx);
386 }
387
388 static int get_file_stat(struct file_info *fdata)
389 {
390 struct stat st;
391 int res;
392
393 if (fdata->file_name == NULL)
394 return 0;
395
396 res = stat(fdata->file_name, &st);
397 if (res){
398 ERRS("stat failed on %s", fdata->file_name);
399 return res;
400 }
401
402 fdata->file_size = st.st_size;
403 return 0;
404 }
405
406 static int read_to_buf(struct file_info *fdata, char *buf)
407 {
408 FILE *f;
409 int ret = EXIT_FAILURE;
410
411 f = fopen(fdata->file_name, "r");
412 if (f == NULL) {
413 ERRS("could not open \"%s\" for reading", fdata->file_name);
414 goto out;
415 }
416
417 errno = 0;
418 fread(buf, fdata->file_size, 1, f);
419 if (errno != 0) {
420 ERRS("unable to read from file \"%s\"", fdata->file_name);
421 goto out_close;
422 }
423
424 ret = EXIT_SUCCESS;
425
426 out_close:
427 fclose(f);
428 out:
429 return ret;
430 }
431
432 static int check_options(void)
433 {
434 int ret;
435
436 if (inspect_info.file_name) {
437 ret = get_file_stat(&inspect_info);
438 if (ret)
439 return ret;
440
441 return 0;
442 } else if (extract) {
443 ERR("no firmware for inspection specified");
444 return -1;
445 }
446
447 if (board_id == NULL && opt_hw_id == NULL) {
448 ERR("either board or hardware id must be specified");
449 return -1;
450 }
451
452 if (board_id) {
453 board = find_board(board_id);
454 if (board == NULL) {
455 ERR("unknown/unsupported board id \"%s\"", board_id);
456 return -1;
457 }
458 if (layout_id == NULL)
459 layout_id = board->layout_id;
460
461 hw_id = board->hw_id;
462 hw_rev = board->hw_rev;
463 } else {
464 if (layout_id == NULL) {
465 ERR("flash layout is not specified");
466 return -1;
467 }
468 hw_id = strtoul(opt_hw_id, NULL, 0);
469
470 if (opt_hw_rev)
471 hw_rev = strtoul(opt_hw_rev, NULL, 0);
472 else
473 hw_rev = 1;
474 }
475
476 layout = find_layout(layout_id);
477 if (layout == NULL) {
478 ERR("unknown flash layout \"%s\"", layout_id);
479 return -1;
480 }
481
482 if (!kernel_la)
483 kernel_la = layout->kernel_la;
484 if (!kernel_ep)
485 kernel_ep = layout->kernel_ep;
486 if (!rootfs_ofs)
487 rootfs_ofs = layout->rootfs_ofs;
488
489 if (kernel_info.file_name == NULL) {
490 ERR("no kernel image specified");
491 return -1;
492 }
493
494 ret = get_file_stat(&kernel_info);
495 if (ret)
496 return ret;
497
498 kernel_len = kernel_info.file_size;
499
500 if (combined) {
501 if (kernel_info.file_size >
502 layout->fw_max_len - sizeof(struct fw_header)) {
503 ERR("kernel image is too big");
504 return -1;
505 }
506 } else {
507 if (rootfs_info.file_name == NULL) {
508 ERR("no rootfs image specified");
509 return -1;
510 }
511
512 ret = get_file_stat(&rootfs_info);
513 if (ret)
514 return ret;
515
516 if (rootfs_align) {
517 kernel_len += sizeof(struct fw_header);
518 kernel_len = ALIGN(kernel_len, rootfs_align);
519 kernel_len -= sizeof(struct fw_header);
520
521 DBG("kernel length aligned to %u", kernel_len);
522
523 if (kernel_len + rootfs_info.file_size >
524 layout->fw_max_len - sizeof(struct fw_header)) {
525 ERR("images are too big");
526 return -1;
527 }
528 } else {
529 if (kernel_info.file_size >
530 rootfs_ofs - sizeof(struct fw_header)) {
531 ERR("kernel image is too big");
532 return -1;
533 }
534
535 if (rootfs_info.file_size >
536 (layout->fw_max_len - rootfs_ofs)) {
537 ERR("rootfs image is too big");
538 return -1;
539 }
540 }
541 }
542
543 if (ofname == NULL) {
544 ERR("no output file specified");
545 return -1;
546 }
547
548 return 0;
549 }
550
551 static void fill_header(char *buf, int len)
552 {
553 struct fw_header *hdr = (struct fw_header *)buf;
554
555 memset(hdr, 0, sizeof(struct fw_header));
556
557 hdr->version = htonl(HEADER_VERSION_V1);
558 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
559 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
560 hdr->hw_id = htonl(hw_id);
561 hdr->hw_rev = htonl(hw_rev);
562
563 if (boot_info.file_size == 0)
564 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
565 else
566 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
567
568 hdr->kernel_la = htonl(kernel_la);
569 hdr->kernel_ep = htonl(kernel_ep);
570 hdr->fw_length = htonl(layout->fw_max_len);
571 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
572 hdr->kernel_len = htonl(kernel_len);
573 if (!combined) {
574 hdr->rootfs_ofs = htonl(rootfs_ofs);
575 hdr->rootfs_len = htonl(rootfs_info.file_size);
576 }
577
578 get_md5(buf, len, hdr->md5sum1);
579 }
580
581 static int pad_jffs2(char *buf, int currlen)
582 {
583 int len;
584 uint32_t pad_mask;
585
586 len = currlen;
587 pad_mask = (64 * 1024);
588 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
589 uint32_t mask;
590 int i;
591
592 for (i = 10; i < 32; i++) {
593 mask = 1 << i;
594 if (pad_mask & mask)
595 break;
596 }
597
598 len = ALIGN(len, mask);
599
600 for (i = 10; i < 32; i++) {
601 mask = 1 << i;
602 if ((len & (mask - 1)) == 0)
603 pad_mask &= ~mask;
604 }
605
606 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
607 buf[len + i] = jffs2_eof_mark[i];
608
609 len += sizeof(jffs2_eof_mark);
610 }
611
612 return len;
613 }
614
615 static int write_fw(char *data, int len)
616 {
617 FILE *f;
618 int ret = EXIT_FAILURE;
619
620 f = fopen(ofname, "w");
621 if (f == NULL) {
622 ERRS("could not open \"%s\" for writing", ofname);
623 goto out;
624 }
625
626 errno = 0;
627 fwrite(data, len, 1, f);
628 if (errno) {
629 ERRS("unable to write output file");
630 goto out_flush;
631 }
632
633 DBG("firmware file \"%s\" completed", ofname);
634
635 ret = EXIT_SUCCESS;
636
637 out_flush:
638 fflush(f);
639 fclose(f);
640 if (ret != EXIT_SUCCESS) {
641 unlink(ofname);
642 }
643 out:
644 return ret;
645 }
646
647 static int build_fw(void)
648 {
649 int buflen;
650 char *buf;
651 char *p;
652 int ret = EXIT_FAILURE;
653 int writelen = 0;
654
655 buflen = layout->fw_max_len;
656
657 buf = malloc(buflen);
658 if (!buf) {
659 ERR("no memory for buffer\n");
660 goto out;
661 }
662
663 memset(buf, 0xff, buflen);
664 p = buf + sizeof(struct fw_header);
665 ret = read_to_buf(&kernel_info, p);
666 if (ret)
667 goto out_free_buf;
668
669 writelen = sizeof(struct fw_header) + kernel_len;
670
671 if (!combined) {
672 if (rootfs_align)
673 p = buf + writelen;
674 else
675 p = buf + rootfs_ofs;
676
677 ret = read_to_buf(&rootfs_info, p);
678 if (ret)
679 goto out_free_buf;
680
681 if (rootfs_align)
682 writelen += rootfs_info.file_size;
683 else
684 writelen = rootfs_ofs + rootfs_info.file_size;
685
686 if (add_jffs2_eof)
687 writelen = pad_jffs2(buf, writelen);
688 }
689
690 if (!strip_padding)
691 writelen = buflen;
692
693 fill_header(buf, writelen);
694 ret = write_fw(buf, writelen);
695 if (ret)
696 goto out_free_buf;
697
698 ret = EXIT_SUCCESS;
699
700 out_free_buf:
701 free(buf);
702 out:
703 return ret;
704 }
705
706 /* Helper functions to inspect_fw() representing different output formats */
707 static inline void inspect_fw_pstr(char *label, char *str)
708 {
709 printf("%-23s: %s\n", label, str);
710 }
711
712 static inline void inspect_fw_phex(char *label, uint32_t val)
713 {
714 printf("%-23s: 0x%08x\n", label, val);
715 }
716
717 static inline void inspect_fw_phexpost(char *label,
718 uint32_t val, char *post)
719 {
720 printf("%-23s: 0x%08x (%s)\n", label, val, post);
721 }
722
723 static inline void inspect_fw_phexdef(char *label,
724 uint32_t val, uint32_t defval)
725 {
726 printf("%-23s: 0x%08x ", label, val);
727
728 if (val == defval)
729 printf("(== OpenWrt default)\n");
730 else
731 printf("(OpenWrt default: 0x%08x)\n", defval);
732 }
733
734 static inline void inspect_fw_phexexp(char *label,
735 uint32_t val, uint32_t expval)
736 {
737 printf("%-23s: 0x%08x ", label, val);
738
739 if (val == expval)
740 printf("(ok)\n");
741 else
742 printf("(expected: 0x%08x)\n", expval);
743 }
744
745 static inline void inspect_fw_phexdec(char *label, uint32_t val)
746 {
747 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
748 }
749
750 static inline void inspect_fw_phexdecdef(char *label,
751 uint32_t val, uint32_t defval)
752 {
753 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
754
755 if (val == defval)
756 printf("(== OpenWrt default)\n");
757 else
758 printf("(OpenWrt default: 0x%08x)\n", defval);
759 }
760
761 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
762 {
763 int i;
764
765 printf("%-23s:", label);
766 for (i=0; i<MD5SUM_LEN; i++)
767 printf(" %02x", val[i]);
768 printf(" %s\n", text);
769 }
770
771 static int inspect_fw(void)
772 {
773 char *buf;
774 struct fw_header *hdr;
775 uint8_t md5sum[MD5SUM_LEN];
776 struct board_info *board;
777 int ret = EXIT_FAILURE;
778
779 buf = malloc(inspect_info.file_size);
780 if (!buf) {
781 ERR("no memory for buffer!\n");
782 goto out;
783 }
784
785 ret = read_to_buf(&inspect_info, buf);
786 if (ret)
787 goto out_free_buf;
788 hdr = (struct fw_header *)buf;
789
790 inspect_fw_pstr("File name", inspect_info.file_name);
791 inspect_fw_phexdec("File size", inspect_info.file_size);
792
793 if (ntohl(hdr->version) != HEADER_VERSION_V1) {
794 ERR("file does not seem to have V1 header!\n");
795 goto out_free_buf;
796 }
797
798 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
799
800 if (ntohl(hdr->unk1) != 0)
801 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
802
803 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
804 if (ntohl(hdr->boot_len) == 0)
805 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
806 else
807 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
808 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
809
810 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
811 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
812 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
813 } else {
814 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
815 }
816 if (ntohl(hdr->unk2) != 0)
817 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
818 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
819 "(purpose yet unknown, unchecked here)");
820 if (ntohl(hdr->unk3) != 0)
821 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
822
823 printf("\n");
824
825 inspect_fw_pstr("Vendor name", hdr->vendor_name);
826 inspect_fw_pstr("Firmware version", hdr->fw_version);
827 board = find_board_by_hwid(ntohl(hdr->hw_id));
828 if (board) {
829 layout = find_layout(board->layout_id);
830 inspect_fw_phexpost("Hardware ID",
831 ntohl(hdr->hw_id), board->id);
832 inspect_fw_phexexp("Hardware Revision",
833 ntohl(hdr->hw_rev), board->hw_rev);
834 } else {
835 inspect_fw_phexpost("Hardware ID",
836 ntohl(hdr->hw_id), "unknown");
837 inspect_fw_phex("Hardware Revision",
838 ntohl(hdr->hw_rev));
839 }
840
841 printf("\n");
842
843 inspect_fw_phexdec("Kernel data offset",
844 ntohl(hdr->kernel_ofs));
845 inspect_fw_phexdec("Kernel data length",
846 ntohl(hdr->kernel_len));
847 if (board) {
848 inspect_fw_phexdef("Kernel load address",
849 ntohl(hdr->kernel_la),
850 layout ? layout->kernel_la : 0xffffffff);
851 inspect_fw_phexdef("Kernel entry point",
852 ntohl(hdr->kernel_ep),
853 layout ? layout->kernel_ep : 0xffffffff);
854 inspect_fw_phexdecdef("Rootfs data offset",
855 ntohl(hdr->rootfs_ofs),
856 layout ? layout->rootfs_ofs : 0xffffffff);
857 } else {
858 inspect_fw_phex("Kernel load address",
859 ntohl(hdr->kernel_la));
860 inspect_fw_phex("Kernel entry point",
861 ntohl(hdr->kernel_ep));
862 inspect_fw_phexdec("Rootfs data offset",
863 ntohl(hdr->rootfs_ofs));
864 }
865 inspect_fw_phexdec("Rootfs data length",
866 ntohl(hdr->rootfs_len));
867 inspect_fw_phexdec("Boot loader data offset",
868 ntohl(hdr->boot_ofs));
869 inspect_fw_phexdec("Boot loader data length",
870 ntohl(hdr->boot_len));
871 inspect_fw_phexdec("Total firmware length",
872 ntohl(hdr->fw_length));
873
874 if (extract) {
875 FILE *fp;
876 char *filename;
877
878 printf("\n");
879
880 filename = malloc(strlen(inspect_info.file_name) + 8);
881 sprintf(filename, "%s-kernel", inspect_info.file_name);
882 printf("Extracting kernel to \"%s\"...\n", filename);
883 fp = fopen(filename, "w");
884 if (fp) {
885 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
886 ntohl(hdr->kernel_len), 1, fp)) {
887 ERR("error in fwrite(): %s", strerror(errno));
888 }
889 fclose(fp);
890 } else {
891 ERR("error in fopen(): %s", strerror(errno));
892 }
893 free(filename);
894
895 filename = malloc(strlen(inspect_info.file_name) + 8);
896 sprintf(filename, "%s-rootfs", inspect_info.file_name);
897 printf("Extracting rootfs to \"%s\"...\n", filename);
898 fp = fopen(filename, "w");
899 if (fp) {
900 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
901 ntohl(hdr->rootfs_len), 1, fp)) {
902 ERR("error in fwrite(): %s", strerror(errno));
903 }
904 fclose(fp);
905 } else {
906 ERR("error in fopen(): %s", strerror(errno));
907 }
908 free(filename);
909 }
910
911 out_free_buf:
912 free(buf);
913 out:
914 return ret;
915 }
916
917 int main(int argc, char *argv[])
918 {
919 int ret = EXIT_FAILURE;
920 int err;
921
922 FILE *outfile;
923
924 progname = basename(argv[0]);
925
926 while ( 1 ) {
927 int c;
928
929 c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xhsj");
930 if (c == -1)
931 break;
932
933 switch (c) {
934 case 'a':
935 sscanf(optarg, "0x%x", &rootfs_align);
936 break;
937 case 'B':
938 board_id = optarg;
939 break;
940 case 'H':
941 opt_hw_id = optarg;
942 break;
943 case 'E':
944 sscanf(optarg, "0x%x", &kernel_ep);
945 break;
946 case 'F':
947 layout_id = optarg;
948 break;
949 case 'W':
950 opt_hw_rev = optarg;
951 break;
952 case 'L':
953 sscanf(optarg, "0x%x", &kernel_la);
954 break;
955 case 'V':
956 version = optarg;
957 break;
958 case 'N':
959 vendor = optarg;
960 break;
961 case 'c':
962 combined++;
963 break;
964 case 'k':
965 kernel_info.file_name = optarg;
966 break;
967 case 'r':
968 rootfs_info.file_name = optarg;
969 break;
970 case 'R':
971 sscanf(optarg, "0x%x", &rootfs_ofs);
972 break;
973 case 'o':
974 ofname = optarg;
975 break;
976 case 's':
977 strip_padding = 1;
978 break;
979 case 'i':
980 inspect_info.file_name = optarg;
981 break;
982 case 'j':
983 add_jffs2_eof = 1;
984 break;
985 case 'x':
986 extract = 1;
987 break;
988 case 'h':
989 usage(EXIT_SUCCESS);
990 break;
991 default:
992 usage(EXIT_FAILURE);
993 break;
994 }
995 }
996
997 ret = check_options();
998 if (ret)
999 goto out;
1000
1001 if (!inspect_info.file_name)
1002 ret = build_fw();
1003 else
1004 ret = inspect_fw();
1005
1006 out:
1007 return ret;
1008 }
1009
OpenWrt SVN history