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[openwrt/staging/chunkeey.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_WR2543N_V1 0x25430001
53
54 #define MD5SUM_LEN 16
55
56 struct file_info {
57 char *file_name; /* name of the file */
58 uint32_t file_size; /* length of the file */
59 };
60
61 struct fw_header {
62 uint32_t version; /* header version */
63 char vendor_name[24];
64 char fw_version[36];
65 uint32_t hw_id; /* hardware id */
66 uint32_t hw_rev; /* hardware revision */
67 uint32_t unk1;
68 uint8_t md5sum1[MD5SUM_LEN];
69 uint32_t unk2;
70 uint8_t md5sum2[MD5SUM_LEN];
71 uint32_t unk3;
72 uint32_t kernel_la; /* kernel load address */
73 uint32_t kernel_ep; /* kernel entry point */
74 uint32_t fw_length; /* total length of the firmware */
75 uint32_t kernel_ofs; /* kernel data offset */
76 uint32_t kernel_len; /* kernel data length */
77 uint32_t rootfs_ofs; /* rootfs data offset */
78 uint32_t rootfs_len; /* rootfs data length */
79 uint32_t boot_ofs; /* bootloader data offset */
80 uint32_t boot_len; /* bootloader data length */
81 uint8_t pad[360];
82 } __attribute__ ((packed));
83
84 struct flash_layout {
85 char *id;
86 uint32_t fw_max_len;
87 uint32_t kernel_la;
88 uint32_t kernel_ep;
89 uint32_t rootfs_ofs;
90 };
91
92 struct board_info {
93 char *id;
94 uint32_t hw_id;
95 uint32_t hw_rev;
96 char *layout_id;
97 };
98
99 /*
100 * Globals
101 */
102 static char *ofname;
103 static char *progname;
104 static char *vendor = "TP-LINK Technologies";
105 static char *version = "ver. 1.0";
106
107 static char *board_id;
108 static struct board_info *board;
109 static char *layout_id;
110 static struct flash_layout *layout;
111 static char *opt_hw_id;
112 static uint32_t hw_id;
113 static char *opt_hw_rev;
114 static uint32_t hw_rev;
115 static struct file_info kernel_info;
116 static uint32_t kernel_la = 0;
117 static uint32_t kernel_ep = 0;
118 static uint32_t kernel_len = 0;
119 static struct file_info rootfs_info;
120 static uint32_t rootfs_ofs = 0;
121 static uint32_t rootfs_align;
122 static struct file_info boot_info;
123 static int combined;
124 static int strip_padding;
125 static int add_jffs2_eof;
126 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
127
128 static struct file_info inspect_info;
129 static int extract = 0;
130
131 char md5salt_normal[MD5SUM_LEN] = {
132 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
133 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
134 };
135
136 char md5salt_boot[MD5SUM_LEN] = {
137 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
138 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
139 };
140
141 static struct flash_layout layouts[] = {
142 {
143 .id = "4M",
144 .fw_max_len = 0x3c0000,
145 .kernel_la = 0x80060000,
146 .kernel_ep = 0x80060000,
147 .rootfs_ofs = 0x140000,
148 }, {
149 .id = "4Mlzma",
150 .fw_max_len = 0x3c0000,
151 .kernel_la = 0x80060000,
152 .kernel_ep = 0x80060000,
153 .rootfs_ofs = 0x100000,
154 }, {
155 .id = "8M",
156 .fw_max_len = 0x7c0000,
157 .kernel_la = 0x80060000,
158 .kernel_ep = 0x80060000,
159 .rootfs_ofs = 0x140000,
160 }, {
161 .id = "8Mlzma",
162 .fw_max_len = 0x7c0000,
163 .kernel_la = 0x80060000,
164 .kernel_ep = 0x80060000,
165 .rootfs_ofs = 0x100000,
166 }, {
167 /* terminating entry */
168 }
169 };
170
171 static struct board_info boards[] = {
172 {
173 .id = "TL-MR3020v1",
174 .hw_id = HWID_TL_MR3020_V1,
175 .hw_rev = 1,
176 .layout_id = "4Mlzma",
177 }, {
178 .id = "TL-MR3220v1",
179 .hw_id = HWID_TL_MR3220_V1,
180 .hw_rev = 1,
181 .layout_id = "4M",
182 }, {
183 .id = "TL-MR3420v1",
184 .hw_id = HWID_TL_MR3420_V1,
185 .hw_rev = 1,
186 .layout_id = "4M",
187 }, {
188 .id = "TL-WA701Nv1",
189 .hw_id = HWID_TL_WA701N_V1,
190 .hw_rev = 1,
191 .layout_id = "4M",
192 }, {
193 .id = "TL-WA901NDv1",
194 .hw_id = HWID_TL_WA901ND_V1,
195 .hw_rev = 1,
196 .layout_id = "4M",
197 }, {
198 .id = "TL-WA901NDv2",
199 .hw_id = HWID_TL_WA901ND_V2,
200 .hw_rev = 1,
201 .layout_id = "4M",
202 }, {
203 .id = "TL-WR741NDv1",
204 .hw_id = HWID_TL_WR741ND_V1,
205 .hw_rev = 1,
206 .layout_id = "4M",
207 }, {
208 .id = "TL-WR741NDv4",
209 .hw_id = HWID_TL_WR741ND_V4,
210 .hw_rev = 1,
211 .layout_id = "4Mlzma",
212 }, {
213 .id = "TL-WR740Nv1",
214 .hw_id = HWID_TL_WR740N_V1,
215 .hw_rev = 1,
216 .layout_id = "4M",
217 }, {
218 .id = "TL-WR740Nv3",
219 .hw_id = HWID_TL_WR740N_V3,
220 .hw_rev = 1,
221 .layout_id = "4M",
222 }, {
223 .id = "TL-WR743NDv1",
224 .hw_id = HWID_TL_WR743ND_V1,
225 .hw_rev = 1,
226 .layout_id = "4M",
227 }, {
228 .id = "TL-WR841Nv1.5",
229 .hw_id = HWID_TL_WR841N_V1_5,
230 .hw_rev = 2,
231 .layout_id = "4M",
232 }, {
233 .id = "TL-WR841NDv3",
234 .hw_id = HWID_TL_WR841ND_V3,
235 .hw_rev = 3,
236 .layout_id = "4M",
237 }, {
238 .id = "TL-WR841NDv5",
239 .hw_id = HWID_TL_WR841ND_V5,
240 .hw_rev = 1,
241 .layout_id = "4M",
242 }, {
243 .id = "TL-WR841NDv7",
244 .hw_id = HWID_TL_WR841ND_V7,
245 .hw_rev = 1,
246 .layout_id = "4M",
247 }, {
248 .id = "TL-WR941NDv2",
249 .hw_id = HWID_TL_WR941ND_V2,
250 .hw_rev = 2,
251 .layout_id = "4M",
252 }, {
253 .id = "TL-WR941NDv4",
254 .hw_id = HWID_TL_WR941ND_V4,
255 .hw_rev = 1,
256 .layout_id = "4M",
257 }, {
258 .id = "TL-WR1043NDv1",
259 .hw_id = HWID_TL_WR1043ND_V1,
260 .hw_rev = 1,
261 .layout_id = "8M",
262 }, {
263 .id = "TL-WR2543Nv1",
264 .hw_id = HWID_TL_WR2543N_V1,
265 .hw_rev = 1,
266 .layout_id = "8Mlzma",
267 }, {
268 .id = "TL-WR703Nv1",
269 .hw_id = HWID_TL_WR703N_V1,
270 .hw_rev = 1,
271 .layout_id = "4Mlzma",
272 }, {
273 /* terminating entry */
274 }
275 };
276
277 /*
278 * Message macros
279 */
280 #define ERR(fmt, ...) do { \
281 fflush(0); \
282 fprintf(stderr, "[%s] *** error: " fmt "\n", \
283 progname, ## __VA_ARGS__ ); \
284 } while (0)
285
286 #define ERRS(fmt, ...) do { \
287 int save = errno; \
288 fflush(0); \
289 fprintf(stderr, "[%s] *** error: " fmt "\n", \
290 progname, ## __VA_ARGS__, strerror(save)); \
291 } while (0)
292
293 #define DBG(fmt, ...) do { \
294 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
295 } while (0)
296
297 static struct board_info *find_board(char *id)
298 {
299 struct board_info *ret;
300 struct board_info *board;
301
302 ret = NULL;
303 for (board = boards; board->id != NULL; board++){
304 if (strcasecmp(id, board->id) == 0) {
305 ret = board;
306 break;
307 }
308 };
309
310 return ret;
311 }
312
313 static struct board_info *find_board_by_hwid(uint32_t hw_id)
314 {
315 struct board_info *board;
316
317 for (board = boards; board->id != NULL; board++) {
318 if (hw_id == board->hw_id)
319 return board;
320 };
321
322 return NULL;
323 }
324
325 static struct flash_layout *find_layout(char *id)
326 {
327 struct flash_layout *ret;
328 struct flash_layout *l;
329
330 ret = NULL;
331 for (l = layouts; l->id != NULL; l++){
332 if (strcasecmp(id, l->id) == 0) {
333 ret = l;
334 break;
335 }
336 };
337
338 return ret;
339 }
340
341 static void usage(int status)
342 {
343 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
344 struct board_info *board;
345
346 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
347 fprintf(stream,
348 "\n"
349 "Options:\n"
350 " -B <board> create image for the board specified with <board>\n"
351 " -c use combined kernel image\n"
352 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
353 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
354 " -H <hwid> use hardware id specified with <hwid>\n"
355 " -F <id> use flash layout specified with <id>\n"
356 " -k <file> read kernel image from the file <file>\n"
357 " -r <file> read rootfs image from the file <file>\n"
358 " -a <align> align the rootfs start on an <align> bytes boundary\n"
359 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
360 " -o <file> write output to the file <file>\n"
361 " -s strip padding from the end of the image\n"
362 " -j add jffs2 end-of-filesystem markers\n"
363 " -N <vendor> set image vendor to <vendor>\n"
364 " -V <version> set image version to <version>\n"
365 " -i <file> inspect given firmware file <file>\n"
366 " -x extract kernel and rootfs while inspecting (requires -i)\n"
367 " -h show this screen\n"
368 );
369
370 exit(status);
371 }
372
373 static int get_md5(char *data, int size, char *md5)
374 {
375 MD5_CTX ctx;
376
377 MD5_Init(&ctx);
378 MD5_Update(&ctx, data, size);
379 MD5_Final(md5, &ctx);
380 }
381
382 static int get_file_stat(struct file_info *fdata)
383 {
384 struct stat st;
385 int res;
386
387 if (fdata->file_name == NULL)
388 return 0;
389
390 res = stat(fdata->file_name, &st);
391 if (res){
392 ERRS("stat failed on %s", fdata->file_name);
393 return res;
394 }
395
396 fdata->file_size = st.st_size;
397 return 0;
398 }
399
400 static int read_to_buf(struct file_info *fdata, char *buf)
401 {
402 FILE *f;
403 int ret = EXIT_FAILURE;
404
405 f = fopen(fdata->file_name, "r");
406 if (f == NULL) {
407 ERRS("could not open \"%s\" for reading", fdata->file_name);
408 goto out;
409 }
410
411 errno = 0;
412 fread(buf, fdata->file_size, 1, f);
413 if (errno != 0) {
414 ERRS("unable to read from file \"%s\"", fdata->file_name);
415 goto out_close;
416 }
417
418 ret = EXIT_SUCCESS;
419
420 out_close:
421 fclose(f);
422 out:
423 return ret;
424 }
425
426 static int check_options(void)
427 {
428 int ret;
429
430 if (inspect_info.file_name) {
431 ret = get_file_stat(&inspect_info);
432 if (ret)
433 return ret;
434
435 return 0;
436 } else if (extract) {
437 ERR("no firmware for inspection specified");
438 return -1;
439 }
440
441 if (board_id == NULL && opt_hw_id == NULL) {
442 ERR("either board or hardware id must be specified");
443 return -1;
444 }
445
446 if (board_id) {
447 board = find_board(board_id);
448 if (board == NULL) {
449 ERR("unknown/unsupported board id \"%s\"", board_id);
450 return -1;
451 }
452 if (layout_id == NULL)
453 layout_id = board->layout_id;
454
455 hw_id = board->hw_id;
456 hw_rev = board->hw_rev;
457 } else {
458 if (layout_id == NULL) {
459 ERR("flash layout is not specified");
460 return -1;
461 }
462 hw_id = strtoul(opt_hw_id, NULL, 0);
463
464 if (opt_hw_rev)
465 hw_rev = strtoul(opt_hw_rev, NULL, 0);
466 else
467 hw_rev = 1;
468 }
469
470 layout = find_layout(layout_id);
471 if (layout == NULL) {
472 ERR("unknown flash layout \"%s\"", layout_id);
473 return -1;
474 }
475
476 if (!kernel_la)
477 kernel_la = layout->kernel_la;
478 if (!kernel_ep)
479 kernel_ep = layout->kernel_ep;
480 if (!rootfs_ofs)
481 rootfs_ofs = layout->rootfs_ofs;
482
483 if (kernel_info.file_name == NULL) {
484 ERR("no kernel image specified");
485 return -1;
486 }
487
488 ret = get_file_stat(&kernel_info);
489 if (ret)
490 return ret;
491
492 kernel_len = kernel_info.file_size;
493
494 if (combined) {
495 if (kernel_info.file_size >
496 layout->fw_max_len - sizeof(struct fw_header)) {
497 ERR("kernel image is too big");
498 return -1;
499 }
500 } else {
501 if (rootfs_info.file_name == NULL) {
502 ERR("no rootfs image specified");
503 return -1;
504 }
505
506 ret = get_file_stat(&rootfs_info);
507 if (ret)
508 return ret;
509
510 if (rootfs_align) {
511 kernel_len += sizeof(struct fw_header);
512 kernel_len = ALIGN(kernel_len, rootfs_align);
513 kernel_len -= sizeof(struct fw_header);
514
515 DBG("kernel length aligned to %u", kernel_len);
516
517 if (kernel_len + rootfs_info.file_size >
518 layout->fw_max_len - sizeof(struct fw_header)) {
519 ERR("images are too big");
520 return -1;
521 }
522 } else {
523 if (kernel_info.file_size >
524 rootfs_ofs - sizeof(struct fw_header)) {
525 ERR("kernel image is too big");
526 return -1;
527 }
528
529 if (rootfs_info.file_size >
530 (layout->fw_max_len - rootfs_ofs)) {
531 ERR("rootfs image is too big");
532 return -1;
533 }
534 }
535 }
536
537 if (ofname == NULL) {
538 ERR("no output file specified");
539 return -1;
540 }
541
542 return 0;
543 }
544
545 static void fill_header(char *buf, int len)
546 {
547 struct fw_header *hdr = (struct fw_header *)buf;
548
549 memset(hdr, 0, sizeof(struct fw_header));
550
551 hdr->version = htonl(HEADER_VERSION_V1);
552 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
553 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
554 hdr->hw_id = htonl(hw_id);
555 hdr->hw_rev = htonl(hw_rev);
556
557 if (boot_info.file_size == 0)
558 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
559 else
560 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
561
562 hdr->kernel_la = htonl(kernel_la);
563 hdr->kernel_ep = htonl(kernel_ep);
564 hdr->fw_length = htonl(layout->fw_max_len);
565 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
566 hdr->kernel_len = htonl(kernel_len);
567 if (!combined) {
568 hdr->rootfs_ofs = htonl(rootfs_ofs);
569 hdr->rootfs_len = htonl(rootfs_info.file_size);
570 }
571
572 get_md5(buf, len, hdr->md5sum1);
573 }
574
575 static int pad_jffs2(char *buf, int currlen)
576 {
577 int len;
578 uint32_t pad_mask;
579
580 len = currlen;
581 pad_mask = (64 * 1024);
582 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
583 uint32_t mask;
584 int i;
585
586 for (i = 10; i < 32; i++) {
587 mask = 1 << i;
588 if (pad_mask & mask)
589 break;
590 }
591
592 len = ALIGN(len, mask);
593
594 for (i = 10; i < 32; i++) {
595 mask = 1 << i;
596 if ((len & (mask - 1)) == 0)
597 pad_mask &= ~mask;
598 }
599
600 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
601 buf[len + i] = jffs2_eof_mark[i];
602
603 len += sizeof(jffs2_eof_mark);
604 }
605
606 return len;
607 }
608
609 static int write_fw(char *data, int len)
610 {
611 FILE *f;
612 int ret = EXIT_FAILURE;
613
614 f = fopen(ofname, "w");
615 if (f == NULL) {
616 ERRS("could not open \"%s\" for writing", ofname);
617 goto out;
618 }
619
620 errno = 0;
621 fwrite(data, len, 1, f);
622 if (errno) {
623 ERRS("unable to write output file");
624 goto out_flush;
625 }
626
627 DBG("firmware file \"%s\" completed", ofname);
628
629 ret = EXIT_SUCCESS;
630
631 out_flush:
632 fflush(f);
633 fclose(f);
634 if (ret != EXIT_SUCCESS) {
635 unlink(ofname);
636 }
637 out:
638 return ret;
639 }
640
641 static int build_fw(void)
642 {
643 int buflen;
644 char *buf;
645 char *p;
646 int ret = EXIT_FAILURE;
647 int writelen = 0;
648
649 buflen = layout->fw_max_len;
650
651 buf = malloc(buflen);
652 if (!buf) {
653 ERR("no memory for buffer\n");
654 goto out;
655 }
656
657 memset(buf, 0xff, buflen);
658 p = buf + sizeof(struct fw_header);
659 ret = read_to_buf(&kernel_info, p);
660 if (ret)
661 goto out_free_buf;
662
663 writelen = sizeof(struct fw_header) + kernel_len;
664
665 if (!combined) {
666 if (rootfs_align)
667 p = buf + writelen;
668 else
669 p = buf + rootfs_ofs;
670
671 ret = read_to_buf(&rootfs_info, p);
672 if (ret)
673 goto out_free_buf;
674
675 if (rootfs_align)
676 writelen += rootfs_info.file_size;
677 else
678 writelen = rootfs_ofs + rootfs_info.file_size;
679
680 if (add_jffs2_eof)
681 writelen = pad_jffs2(buf, writelen);
682 }
683
684 if (!strip_padding)
685 writelen = buflen;
686
687 fill_header(buf, writelen);
688 ret = write_fw(buf, writelen);
689 if (ret)
690 goto out_free_buf;
691
692 ret = EXIT_SUCCESS;
693
694 out_free_buf:
695 free(buf);
696 out:
697 return ret;
698 }
699
700 /* Helper functions to inspect_fw() representing different output formats */
701 static inline void inspect_fw_pstr(char *label, char *str)
702 {
703 printf("%-23s: %s\n", label, str);
704 }
705
706 static inline void inspect_fw_phex(char *label, uint32_t val)
707 {
708 printf("%-23s: 0x%08x\n", label, val);
709 }
710
711 static inline void inspect_fw_phexpost(char *label,
712 uint32_t val, char *post)
713 {
714 printf("%-23s: 0x%08x (%s)\n", label, val, post);
715 }
716
717 static inline void inspect_fw_phexdef(char *label,
718 uint32_t val, uint32_t defval)
719 {
720 printf("%-23s: 0x%08x ", label, val);
721
722 if (val == defval)
723 printf("(== OpenWrt default)\n");
724 else
725 printf("(OpenWrt default: 0x%08x)\n", defval);
726 }
727
728 static inline void inspect_fw_phexexp(char *label,
729 uint32_t val, uint32_t expval)
730 {
731 printf("%-23s: 0x%08x ", label, val);
732
733 if (val == expval)
734 printf("(ok)\n");
735 else
736 printf("(expected: 0x%08x)\n", expval);
737 }
738
739 static inline void inspect_fw_phexdec(char *label, uint32_t val)
740 {
741 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
742 }
743
744 static inline void inspect_fw_phexdecdef(char *label,
745 uint32_t val, uint32_t defval)
746 {
747 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
748
749 if (val == defval)
750 printf("(== OpenWrt default)\n");
751 else
752 printf("(OpenWrt default: 0x%08x)\n", defval);
753 }
754
755 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
756 {
757 int i;
758
759 printf("%-23s:", label);
760 for (i=0; i<MD5SUM_LEN; i++)
761 printf(" %02x", val[i]);
762 printf(" %s\n", text);
763 }
764
765 static int inspect_fw(void)
766 {
767 char *buf;
768 struct fw_header *hdr;
769 uint8_t md5sum[MD5SUM_LEN];
770 struct board_info *board;
771 int ret = EXIT_FAILURE;
772
773 buf = malloc(inspect_info.file_size);
774 if (!buf) {
775 ERR("no memory for buffer!\n");
776 goto out;
777 }
778
779 ret = read_to_buf(&inspect_info, buf);
780 if (ret)
781 goto out_free_buf;
782 hdr = (struct fw_header *)buf;
783
784 inspect_fw_pstr("File name", inspect_info.file_name);
785 inspect_fw_phexdec("File size", inspect_info.file_size);
786
787 if (ntohl(hdr->version) != HEADER_VERSION_V1) {
788 ERR("file does not seem to have V1 header!\n");
789 goto out_free_buf;
790 }
791
792 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
793
794 if (ntohl(hdr->unk1) != 0)
795 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
796
797 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
798 if (ntohl(hdr->boot_len) == 0)
799 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
800 else
801 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
802 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
803
804 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
805 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
806 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
807 } else {
808 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
809 }
810 if (ntohl(hdr->unk2) != 0)
811 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
812 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
813 "(purpose yet unknown, unchecked here)");
814 if (ntohl(hdr->unk3) != 0)
815 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
816
817 printf("\n");
818
819 inspect_fw_pstr("Vendor name", hdr->vendor_name);
820 inspect_fw_pstr("Firmware version", hdr->fw_version);
821 board = find_board_by_hwid(ntohl(hdr->hw_id));
822 if (board) {
823 layout = find_layout(board->layout_id);
824 inspect_fw_phexpost("Hardware ID",
825 ntohl(hdr->hw_id), board->id);
826 inspect_fw_phexexp("Hardware Revision",
827 ntohl(hdr->hw_rev), board->hw_rev);
828 } else {
829 inspect_fw_phexpost("Hardware ID",
830 ntohl(hdr->hw_id), "unknown");
831 inspect_fw_phex("Hardware Revision",
832 ntohl(hdr->hw_rev));
833 }
834
835 printf("\n");
836
837 inspect_fw_phexdec("Kernel data offset",
838 ntohl(hdr->kernel_ofs));
839 inspect_fw_phexdec("Kernel data length",
840 ntohl(hdr->kernel_len));
841 if (board) {
842 inspect_fw_phexdef("Kernel load address",
843 ntohl(hdr->kernel_la),
844 layout ? layout->kernel_la : 0xffffffff);
845 inspect_fw_phexdef("Kernel entry point",
846 ntohl(hdr->kernel_ep),
847 layout ? layout->kernel_ep : 0xffffffff);
848 inspect_fw_phexdecdef("Rootfs data offset",
849 ntohl(hdr->rootfs_ofs),
850 layout ? layout->rootfs_ofs : 0xffffffff);
851 } else {
852 inspect_fw_phex("Kernel load address",
853 ntohl(hdr->kernel_la));
854 inspect_fw_phex("Kernel entry point",
855 ntohl(hdr->kernel_ep));
856 inspect_fw_phexdec("Rootfs data offset",
857 ntohl(hdr->rootfs_ofs));
858 }
859 inspect_fw_phexdec("Rootfs data length",
860 ntohl(hdr->rootfs_len));
861 inspect_fw_phexdec("Boot loader data offset",
862 ntohl(hdr->boot_ofs));
863 inspect_fw_phexdec("Boot loader data length",
864 ntohl(hdr->boot_len));
865 inspect_fw_phexdec("Total firmware length",
866 ntohl(hdr->fw_length));
867
868 if (extract) {
869 FILE *fp;
870 char *filename;
871
872 printf("\n");
873
874 filename = malloc(strlen(inspect_info.file_name) + 8);
875 sprintf(filename, "%s-kernel", inspect_info.file_name);
876 printf("Extracting kernel to \"%s\"...\n", filename);
877 fp = fopen(filename, "w");
878 if (fp) {
879 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
880 ntohl(hdr->kernel_len), 1, fp)) {
881 ERR("error in fwrite(): %s", strerror(errno));
882 }
883 fclose(fp);
884 } else {
885 ERR("error in fopen(): %s", strerror(errno));
886 }
887 free(filename);
888
889 filename = malloc(strlen(inspect_info.file_name) + 8);
890 sprintf(filename, "%s-rootfs", inspect_info.file_name);
891 printf("Extracting rootfs to \"%s\"...\n", filename);
892 fp = fopen(filename, "w");
893 if (fp) {
894 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
895 ntohl(hdr->rootfs_len), 1, fp)) {
896 ERR("error in fwrite(): %s", strerror(errno));
897 }
898 fclose(fp);
899 } else {
900 ERR("error in fopen(): %s", strerror(errno));
901 }
902 free(filename);
903 }
904
905 out_free_buf:
906 free(buf);
907 out:
908 return ret;
909 }
910
911 int main(int argc, char *argv[])
912 {
913 int ret = EXIT_FAILURE;
914 int err;
915
916 FILE *outfile;
917
918 progname = basename(argv[0]);
919
920 while ( 1 ) {
921 int c;
922
923 c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xhsj");
924 if (c == -1)
925 break;
926
927 switch (c) {
928 case 'a':
929 sscanf(optarg, "0x%x", &rootfs_align);
930 break;
931 case 'B':
932 board_id = optarg;
933 break;
934 case 'H':
935 opt_hw_id = optarg;
936 break;
937 case 'E':
938 sscanf(optarg, "0x%x", &kernel_ep);
939 break;
940 case 'F':
941 layout_id = optarg;
942 break;
943 case 'W':
944 opt_hw_rev = optarg;
945 break;
946 case 'L':
947 sscanf(optarg, "0x%x", &kernel_la);
948 break;
949 case 'V':
950 version = optarg;
951 break;
952 case 'N':
953 vendor = optarg;
954 break;
955 case 'c':
956 combined++;
957 break;
958 case 'k':
959 kernel_info.file_name = optarg;
960 break;
961 case 'r':
962 rootfs_info.file_name = optarg;
963 break;
964 case 'R':
965 sscanf(optarg, "0x%x", &rootfs_ofs);
966 break;
967 case 'o':
968 ofname = optarg;
969 break;
970 case 's':
971 strip_padding = 1;
972 break;
973 case 'i':
974 inspect_info.file_name = optarg;
975 break;
976 case 'j':
977 add_jffs2_eof = 1;
978 break;
979 case 'x':
980 extract = 1;
981 break;
982 case 'h':
983 usage(EXIT_SUCCESS);
984 break;
985 default:
986 usage(EXIT_FAILURE);
987 break;
988 }
989 }
990
991 ret = check_options();
992 if (ret)
993 goto out;
994
995 if (!inspect_info.file_name)
996 ret = build_fw();
997 else
998 ret = inspect_fw();
999
1000 out:
1001 return ret;
1002 }
1003
Staging tree of Christian Lamparter