projects / openwrt / staging / blogic.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
ramips: Add support to TP-Link Archer MR200
[openwrt/staging/blogic.git] / tools / firmware-utils / src / mktplinkfw2.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 <stdbool.h>
24 #include <endian.h>
25 #include <sys/stat.h>
26
27 #include <arpa/inet.h>
28 #include <netinet/in.h>
29
30 #include "md5.h"
31
32 #define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
33
34 #define MD5SUM_LEN 16
35
36 struct file_info {
37 char *file_name; /* name of the file */
38 uint32_t file_size; /* length of the file */
39 };
40
41 struct fw_header {
42 uint32_t version; /* 0x00: header version */
43 char fw_version[48]; /* 0x04: fw version string */
44 uint32_t hw_id; /* 0x34: hardware id */
45 uint32_t hw_rev; /* 0x38: FIXME: hardware revision? */
46 uint32_t unk1; /* 0x3c: 0x00000000 */
47 uint8_t md5sum1[MD5SUM_LEN]; /* 0x40 */
48 uint32_t unk2; /* 0x50: 0x00000000 */
49 uint8_t md5sum2[MD5SUM_LEN]; /* 0x54 */
50 uint32_t unk3; /* 0x64: 0xffffffff */
51
52 uint32_t kernel_la; /* 0x68: kernel load address */
53 uint32_t kernel_ep; /* 0x6c: kernel entry point */
54 uint32_t fw_length; /* 0x70: total length of the image */
55 uint32_t kernel_ofs; /* 0x74: kernel data offset */
56 uint32_t kernel_len; /* 0x78: kernel data length */
57 uint32_t rootfs_ofs; /* 0x7c: rootfs data offset */
58 uint32_t rootfs_len; /* 0x80: rootfs data length */
59 uint32_t boot_ofs; /* 0x84: FIXME: seems to be unused */
60 uint32_t boot_len; /* 0x88: FIXME: seems to be unused */
61 uint16_t unk4; /* 0x8c: 0x55aa */
62 uint8_t sver_hi; /* 0x8e */
63 uint8_t sver_lo; /* 0x8f */
64 uint8_t unk5; /* 0x90: magic: 0xa5 */
65 uint8_t ver_hi; /* 0x91 */
66 uint8_t ver_mid; /* 0x92 */
67 uint8_t ver_lo; /* 0x93 */
68 uint8_t pad[364];
69 } __attribute__ ((packed));
70
71 struct flash_layout {
72 char *id;
73 uint32_t fw_max_len;
74 uint32_t kernel_la;
75 uint32_t kernel_ep;
76 uint32_t rootfs_ofs;
77 };
78
79 struct board_info {
80 char *id;
81 uint32_t hw_id;
82 uint32_t hw_rev;
83 char *layout_id;
84 uint32_t hdr_ver;
85 bool endian_swap;
86 };
87
88 /*
89 * Globals
90 */
91 static char *ofname;
92 static char *progname;
93 static char *vendor = "TP-LINK Technologies";
94 static char *version = "ver. 1.0";
95 static char *fw_ver = "0.0.0";
96 static char *sver = "1.0";
97 static uint32_t hdr_ver = 2;
98
99 static char *board_id;
100 static struct board_info *board;
101 static char *layout_id;
102 static struct flash_layout *layout;
103 static char *opt_hw_id;
104 static uint32_t hw_id;
105 static char *opt_hw_rev;
106 static uint32_t hw_rev;
107 static int fw_ver_lo;
108 static int fw_ver_mid;
109 static int fw_ver_hi;
110 static int sver_lo;
111 static int sver_hi;
112 static struct file_info kernel_info;
113 static uint32_t kernel_la = 0;
114 static uint32_t kernel_ep = 0;
115 static uint32_t kernel_len = 0;
116 static struct file_info rootfs_info;
117 static uint32_t rootfs_ofs = 0;
118 static uint32_t rootfs_align;
119 static struct file_info boot_info;
120 static int combined;
121 static int strip_padding;
122 static int add_jffs2_eof;
123 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
124
125 static struct file_info inspect_info;
126 static int extract = 0;
127 static bool endian_swap = false;
128
129 char md5salt_normal[MD5SUM_LEN] = {
130 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
131 0xdc, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x37,
132 };
133
134 char md5salt_boot[MD5SUM_LEN] = {
135 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
136 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
137 };
138
139 static struct flash_layout layouts[] = {
140 {
141 .id = "8Mltq",
142 .fw_max_len = 0x7a0000,
143 .kernel_la = 0x80002000,
144 .kernel_ep = 0x80002000,
145 .rootfs_ofs = 0x140000,
146 }, {
147 .id = "16Mltq",
148 .fw_max_len = 0xf90000,
149 .kernel_la = 0x80002000,
150 .kernel_ep = 0x800061b0,
151 .rootfs_ofs = 0x140000,
152 }, {
153 .id = "8Mmtk",
154 .fw_max_len = 0x7a0000,
155 .kernel_la = 0x80000000,
156 .kernel_ep = 0x80000000,
157 .rootfs_ofs = 0x140000,
158 }, {
159 .id = "8MLmtk",
160 .fw_max_len = 0x7b0000,
161 .kernel_la = 0x80000000,
162 .kernel_ep = 0x80000000,
163 .rootfs_ofs = 0x140000,
164 }, {
165 /* terminating entry */
166 }
167 };
168
169 static struct board_info boards[] = {
170 {
171 .id = "TD-W8970v1",
172 .hw_id = 0x89700001,
173 .hw_rev = 1,
174 .layout_id = "8Mltq",
175 }, {
176 .id = "TD-W8980v1",
177 .hw_id = 0x89800001,
178 .hw_rev = 14,
179 .layout_id = "8Mltq",
180 }, {
181 .id = "ArcherC20i",
182 .hw_id = 0xc2000001,
183 .hw_rev = 58,
184 .layout_id = "8Mmtk",
185 .hdr_ver = 3,
186 .endian_swap = true,
187 }, {
188 .id = "ArcherVR200V",
189 .hw_id = 0x73b70801,
190 .hw_rev = 0x2f,
191 .layout_id = "16Mltq",
192 .hdr_ver = 2,
193 }, {
194 .id = "ArcherC50",
195 .hw_id = 0xc7500001,
196 .hw_rev = 69,
197 .layout_id = "8Mmtk",
198 .hdr_ver = 3,
199 .endian_swap = true,
200 }, {
201 .id = "ArcherMR200",
202 .hw_id = 0xd7500001,
203 .hw_rev = 0x4a,
204 .layout_id = "8MLmtk",
205 .hdr_ver = 3,
206 .endian_swap = true,
207 }, {
208 /* terminating entry */
209 }
210 };
211
212 /*
213 * Message macros
214 */
215 #define ERR(fmt, ...) do { \
216 fflush(0); \
217 fprintf(stderr, "[%s] *** error: " fmt "\n", \
218 progname, ## __VA_ARGS__ ); \
219 } while (0)
220
221 #define ERRS(fmt, ...) do { \
222 int save = errno; \
223 fflush(0); \
224 fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
225 progname, ## __VA_ARGS__, strerror(save)); \
226 } while (0)
227
228 #define DBG(fmt, ...) do { \
229 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
230 } while (0)
231
232 static struct board_info *find_board(char *id)
233 {
234 struct board_info *ret;
235 struct board_info *board;
236
237 ret = NULL;
238 for (board = boards; board->id != NULL; board++){
239 if (strcasecmp(id, board->id) == 0) {
240 ret = board;
241 break;
242 }
243 };
244
245 return ret;
246 }
247
248 static struct board_info *find_board_by_hwid(uint32_t hw_id)
249 {
250 struct board_info *board;
251
252 for (board = boards; board->id != NULL; board++) {
253 if (hw_id == board->hw_id)
254 return board;
255 };
256
257 return NULL;
258 }
259
260 static struct flash_layout *find_layout(char *id)
261 {
262 struct flash_layout *ret;
263 struct flash_layout *l;
264
265 ret = NULL;
266 for (l = layouts; l->id != NULL; l++){
267 if (strcasecmp(id, l->id) == 0) {
268 ret = l;
269 break;
270 }
271 };
272
273 return ret;
274 }
275
276 static void usage(int status)
277 {
278 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
279 struct board_info *board;
280
281 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
282 fprintf(stream,
283 "\n"
284 "Options:\n"
285 " -B <board> create image for the board specified with <board>\n"
286 " -c use combined kernel image\n"
287 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
288 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
289 " -H <hwid> use hardware id specified with <hwid>\n"
290 " -W <hwrev> use hardware revision specified with <hwrev>\n"
291 " -F <id> use flash layout specified with <id>\n"
292 " -k <file> read kernel image from the file <file>\n"
293 " -r <file> read rootfs image from the file <file>\n"
294 " -a <align> align the rootfs start on an <align> bytes boundary\n"
295 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
296 " -o <file> write output to the file <file>\n"
297 " -s strip padding from the end of the image\n"
298 " -j add jffs2 end-of-filesystem markers\n"
299 " -V <version> set image version to <version>\n"
300 " -v <version> set firmware version to <version>\n"
301 " -y <version> set secondary version to <version>\n"
302 " -i <file> inspect given firmware file <file>\n"
303 " -x extract kernel and rootfs while inspecting (requires -i)\n"
304 " -h show this screen\n"
305 );
306
307 exit(status);
308 }
309
310 static int get_md5(char *data, int size, char *md5)
311 {
312 MD5_CTX ctx;
313
314 MD5_Init(&ctx);
315 MD5_Update(&ctx, data, size);
316 MD5_Final(md5, &ctx);
317 }
318
319 static int get_file_stat(struct file_info *fdata)
320 {
321 struct stat st;
322 int res;
323
324 if (fdata->file_name == NULL)
325 return 0;
326
327 res = stat(fdata->file_name, &st);
328 if (res){
329 ERRS("stat failed on %s", fdata->file_name);
330 return res;
331 }
332
333 fdata->file_size = st.st_size;
334 return 0;
335 }
336
337 static int read_to_buf(struct file_info *fdata, char *buf)
338 {
339 FILE *f;
340 int ret = EXIT_FAILURE;
341
342 f = fopen(fdata->file_name, "r");
343 if (f == NULL) {
344 ERRS("could not open \"%s\" for reading", fdata->file_name);
345 goto out;
346 }
347
348 errno = 0;
349 fread(buf, fdata->file_size, 1, f);
350 if (errno != 0) {
351 ERRS("unable to read from file \"%s\"", fdata->file_name);
352 goto out_close;
353 }
354
355 ret = EXIT_SUCCESS;
356
357 out_close:
358 fclose(f);
359 out:
360 return ret;
361 }
362
363 static int check_options(void)
364 {
365 int ret;
366
367 if (inspect_info.file_name) {
368 ret = get_file_stat(&inspect_info);
369 if (ret)
370 return ret;
371
372 return 0;
373 } else if (extract) {
374 ERR("no firmware for inspection specified");
375 return -1;
376 }
377
378 if (board_id == NULL && opt_hw_id == NULL) {
379 ERR("either board or hardware id must be specified");
380 return -1;
381 }
382
383 if (board_id) {
384 board = find_board(board_id);
385 if (board == NULL) {
386 ERR("unknown/unsupported board id \"%s\"", board_id);
387 return -1;
388 }
389 if (layout_id == NULL)
390 layout_id = board->layout_id;
391
392 hw_id = board->hw_id;
393 hw_rev = board->hw_rev;
394 if (board->hdr_ver)
395 hdr_ver = board->hdr_ver;
396 endian_swap = board->endian_swap;
397 } else {
398 if (layout_id == NULL) {
399 ERR("flash layout is not specified");
400 return -1;
401 }
402 hw_id = strtoul(opt_hw_id, NULL, 0);
403
404 if (opt_hw_rev)
405 hw_rev = strtoul(opt_hw_rev, NULL, 0);
406 else
407 hw_rev = 1;
408 }
409
410 layout = find_layout(layout_id);
411 if (layout == NULL) {
412 ERR("unknown flash layout \"%s\"", layout_id);
413 return -1;
414 }
415
416 if (!kernel_la)
417 kernel_la = layout->kernel_la;
418 if (!kernel_ep)
419 kernel_ep = layout->kernel_ep;
420 if (!rootfs_ofs)
421 rootfs_ofs = layout->rootfs_ofs;
422
423 if (kernel_info.file_name == NULL) {
424 ERR("no kernel image specified");
425 return -1;
426 }
427
428 ret = get_file_stat(&kernel_info);
429 if (ret)
430 return ret;
431
432 kernel_len = kernel_info.file_size;
433
434 if (combined) {
435 if (kernel_info.file_size >
436 layout->fw_max_len - sizeof(struct fw_header)) {
437 ERR("kernel image is too big");
438 return -1;
439 }
440 } else {
441 if (rootfs_info.file_name == NULL) {
442 ERR("no rootfs image specified");
443 return -1;
444 }
445
446 ret = get_file_stat(&rootfs_info);
447 if (ret)
448 return ret;
449
450 if (rootfs_align) {
451 kernel_len += sizeof(struct fw_header);
452 kernel_len = ALIGN(kernel_len, rootfs_align);
453 kernel_len -= sizeof(struct fw_header);
454
455 DBG("kernel length aligned to %u", kernel_len);
456
457 if (kernel_len + rootfs_info.file_size >
458 layout->fw_max_len - sizeof(struct fw_header)) {
459 ERR("images are too big");
460 return -1;
461 }
462 } else {
463 if (kernel_info.file_size >
464 rootfs_ofs - sizeof(struct fw_header)) {
465 ERR("kernel image is too big");
466 return -1;
467 }
468
469 if (rootfs_info.file_size >
470 (layout->fw_max_len - rootfs_ofs)) {
471 ERR("rootfs image is too big");
472 return -1;
473 }
474 }
475 }
476
477 if (ofname == NULL) {
478 ERR("no output file specified");
479 return -1;
480 }
481
482 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
483 if (ret != 3) {
484 ERR("invalid firmware version '%s'", fw_ver);
485 return -1;
486 }
487
488 ret = sscanf(sver, "%d.%d", &sver_hi, &sver_lo);
489 if (ret != 2) {
490 ERR("invalid secondary version '%s'", sver);
491 return -1;
492 }
493
494 return 0;
495 }
496
497 static void fill_header(char *buf, int len)
498 {
499 struct fw_header *hdr = (struct fw_header *)buf;
500 unsigned ver_len;
501
502 memset(hdr, '\xff', sizeof(struct fw_header));
503
504 hdr->version = htonl(bswap_32(hdr_ver));
505 ver_len = strlen(version);
506 if (ver_len > (sizeof(hdr->fw_version) - 1))
507 ver_len = sizeof(hdr->fw_version) - 1;
508
509 memcpy(hdr->fw_version, version, ver_len);
510 hdr->fw_version[ver_len] = 0;
511
512 hdr->hw_id = htonl(hw_id);
513 hdr->hw_rev = htonl(hw_rev);
514
515 if (boot_info.file_size == 0) {
516 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
517 hdr->boot_ofs = htonl(0);
518 hdr->boot_len = htonl(0);
519 } else {
520 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
521 hdr->boot_ofs = htonl(rootfs_ofs + rootfs_info.file_size);
522 hdr->boot_len = htonl(rootfs_info.file_size);
523 }
524
525 hdr->kernel_la = htonl(kernel_la);
526 hdr->kernel_ep = htonl(kernel_ep);
527 hdr->fw_length = htonl(layout->fw_max_len);
528 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
529 hdr->kernel_len = htonl(kernel_len);
530 if (!combined) {
531 hdr->rootfs_ofs = htonl(rootfs_ofs);
532 hdr->rootfs_len = htonl(rootfs_info.file_size);
533 }
534
535 hdr->boot_ofs = htonl(0);
536 hdr->boot_len = htonl(boot_info.file_size);
537
538 hdr->unk1 = htonl(0);
539 hdr->unk2 = htonl(0);
540 hdr->unk3 = htonl(0xffffffff);
541 hdr->unk4 = htons(0x55aa);
542 hdr->unk5 = 0xa5;
543
544 hdr->sver_hi = sver_hi;
545 hdr->sver_lo = sver_lo;
546
547 hdr->ver_hi = fw_ver_hi;
548 hdr->ver_mid = fw_ver_mid;
549 hdr->ver_lo = fw_ver_lo;
550
551 if (endian_swap) {
552 hdr->kernel_la = bswap_32(hdr->kernel_la);
553 hdr->kernel_ep = bswap_32(hdr->kernel_ep);
554 }
555
556 get_md5(buf, len, hdr->md5sum1);
557 }
558
559 static int pad_jffs2(char *buf, int currlen)
560 {
561 int len;
562 uint32_t pad_mask;
563
564 len = currlen;
565 pad_mask = (64 * 1024);
566 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
567 uint32_t mask;
568 int i;
569
570 for (i = 10; i < 32; i++) {
571 mask = 1 << i;
572 if (pad_mask & mask)
573 break;
574 }
575
576 len = ALIGN(len, mask);
577
578 for (i = 10; i < 32; i++) {
579 mask = 1 << i;
580 if ((len & (mask - 1)) == 0)
581 pad_mask &= ~mask;
582 }
583
584 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
585 buf[len + i] = jffs2_eof_mark[i];
586
587 len += sizeof(jffs2_eof_mark);
588 }
589
590 return len;
591 }
592
593 static int write_fw(char *data, int len)
594 {
595 FILE *f;
596 int ret = EXIT_FAILURE;
597
598 f = fopen(ofname, "w");
599 if (f == NULL) {
600 ERRS("could not open \"%s\" for writing", ofname);
601 goto out;
602 }
603
604 errno = 0;
605 fwrite(data, len, 1, f);
606 if (errno) {
607 ERRS("unable to write output file");
608 goto out_flush;
609 }
610
611 DBG("firmware file \"%s\" completed", ofname);
612
613 ret = EXIT_SUCCESS;
614
615 out_flush:
616 fflush(f);
617 fclose(f);
618 if (ret != EXIT_SUCCESS) {
619 unlink(ofname);
620 }
621 out:
622 return ret;
623 }
624
625 static int build_fw(void)
626 {
627 int buflen;
628 char *buf;
629 char *p;
630 int ret = EXIT_FAILURE;
631 int writelen = 0;
632
633 buflen = layout->fw_max_len;
634
635 buf = malloc(buflen);
636 if (!buf) {
637 ERR("no memory for buffer\n");
638 goto out;
639 }
640
641 memset(buf, 0xff, buflen);
642 p = buf + sizeof(struct fw_header);
643 ret = read_to_buf(&kernel_info, p);
644 if (ret)
645 goto out_free_buf;
646
647 writelen = sizeof(struct fw_header) + kernel_len;
648
649 if (!combined) {
650 if (rootfs_align)
651 p = buf + writelen;
652 else
653 p = buf + rootfs_ofs;
654
655 ret = read_to_buf(&rootfs_info, p);
656 if (ret)
657 goto out_free_buf;
658
659 if (rootfs_align)
660 writelen += rootfs_info.file_size;
661 else
662 writelen = rootfs_ofs + rootfs_info.file_size;
663
664 if (add_jffs2_eof)
665 writelen = pad_jffs2(buf, writelen);
666 }
667
668 if (!strip_padding)
669 writelen = buflen;
670
671 fill_header(buf, writelen);
672 ret = write_fw(buf, writelen);
673 if (ret)
674 goto out_free_buf;
675
676 ret = EXIT_SUCCESS;
677
678 out_free_buf:
679 free(buf);
680 out:
681 return ret;
682 }
683
684 /* Helper functions to inspect_fw() representing different output formats */
685 static inline void inspect_fw_pstr(char *label, char *str)
686 {
687 printf("%-23s: %s\n", label, str);
688 }
689
690 static inline void inspect_fw_phex(char *label, uint32_t val)
691 {
692 printf("%-23s: 0x%08x\n", label, val);
693 }
694
695 static inline void inspect_fw_phexpost(char *label,
696 uint32_t val, char *post)
697 {
698 printf("%-23s: 0x%08x (%s)\n", label, val, post);
699 }
700
701 static inline void inspect_fw_phexdef(char *label,
702 uint32_t val, uint32_t defval)
703 {
704 printf("%-23s: 0x%08x ", label, val);
705
706 if (val == defval)
707 printf("(== OpenWrt default)\n");
708 else
709 printf("(OpenWrt default: 0x%08x)\n", defval);
710 }
711
712 static inline void inspect_fw_phexexp(char *label,
713 uint32_t val, uint32_t expval)
714 {
715 printf("%-23s: 0x%08x ", label, val);
716
717 if (val == expval)
718 printf("(ok)\n");
719 else
720 printf("(expected: 0x%08x)\n", expval);
721 }
722
723 static inline void inspect_fw_phexdec(char *label, uint32_t val)
724 {
725 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
726 }
727
728 static inline void inspect_fw_phexdecdef(char *label,
729 uint32_t val, uint32_t defval)
730 {
731 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
732
733 if (val == defval)
734 printf("(== OpenWrt default)\n");
735 else
736 printf("(OpenWrt default: 0x%08x)\n", defval);
737 }
738
739 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
740 {
741 int i;
742
743 printf("%-23s:", label);
744 for (i=0; i<MD5SUM_LEN; i++)
745 printf(" %02x", val[i]);
746 printf(" %s\n", text);
747 }
748
749 static int inspect_fw(void)
750 {
751 char *buf;
752 struct fw_header *hdr;
753 uint8_t md5sum[MD5SUM_LEN];
754 struct board_info *board;
755 int ret = EXIT_FAILURE;
756
757 buf = malloc(inspect_info.file_size);
758 if (!buf) {
759 ERR("no memory for buffer!\n");
760 goto out;
761 }
762
763 ret = read_to_buf(&inspect_info, buf);
764 if (ret)
765 goto out_free_buf;
766 hdr = (struct fw_header *)buf;
767
768 inspect_fw_pstr("File name", inspect_info.file_name);
769 inspect_fw_phexdec("File size", inspect_info.file_size);
770
771 switch(bswap_32(ntohl(hdr->version))) {
772 case 2:
773 case 3:
774 break;
775 default:
776 ERR("file does not seem to have V2/V3 header!\n");
777 goto out_free_buf;
778 }
779
780 inspect_fw_phexdec("Version 2 Header size", sizeof(struct fw_header));
781
782 if (ntohl(hdr->unk1) != 0)
783 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
784
785 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
786 if (ntohl(hdr->boot_len) == 0)
787 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
788 else
789 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
790 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
791
792 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
793 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
794 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
795 } else {
796 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
797 }
798 if (ntohl(hdr->unk2) != 0)
799 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
800 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
801 "(purpose yet unknown, unchecked here)");
802
803 if (ntohl(hdr->unk3) != 0xffffffff)
804 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
805
806 if (ntohs(hdr->unk4) != 0x55aa)
807 inspect_fw_phexdec("Unknown value 4", hdr->unk4);
808
809 if (hdr->unk5 != 0xa5)
810 inspect_fw_phexdec("Unknown value 5", hdr->unk5);
811
812 printf("\n");
813
814 inspect_fw_pstr("Firmware version", hdr->fw_version);
815
816 board = find_board_by_hwid(ntohl(hdr->hw_id));
817 if (board) {
818 layout = find_layout(board->layout_id);
819 inspect_fw_phexpost("Hardware ID",
820 ntohl(hdr->hw_id), board->id);
821 inspect_fw_phexexp("Hardware Revision",
822 ntohl(hdr->hw_rev), board->hw_rev);
823 } else {
824 inspect_fw_phexpost("Hardware ID",
825 ntohl(hdr->hw_id), "unknown");
826 inspect_fw_phex("Hardware Revision",
827 ntohl(hdr->hw_rev));
828 }
829
830 printf("%-23s: %d.%d.%d-%d.%d\n", "Software version",
831 hdr->ver_hi, hdr->ver_mid, hdr->ver_lo,
832 hdr->sver_hi, hdr->sver_lo);
833
834 printf("\n");
835
836 inspect_fw_phexdec("Kernel data offset",
837 ntohl(hdr->kernel_ofs));
838 inspect_fw_phexdec("Kernel data length",
839 ntohl(hdr->kernel_len));
840 if (board) {
841 inspect_fw_phexdef("Kernel load address",
842 ntohl(hdr->kernel_la),
843 layout ? layout->kernel_la : 0xffffffff);
844 inspect_fw_phexdef("Kernel entry point",
845 ntohl(hdr->kernel_ep),
846 layout ? layout->kernel_ep : 0xffffffff);
847 inspect_fw_phexdecdef("Rootfs data offset",
848 ntohl(hdr->rootfs_ofs),
849 layout ? layout->rootfs_ofs : 0xffffffff);
850 } else {
851 inspect_fw_phex("Kernel load address",
852 ntohl(hdr->kernel_la));
853 inspect_fw_phex("Kernel entry point",
854 ntohl(hdr->kernel_ep));
855 inspect_fw_phexdec("Rootfs data offset",
856 ntohl(hdr->rootfs_ofs));
857 }
858 inspect_fw_phexdec("Rootfs data length",
859 ntohl(hdr->rootfs_len));
860 inspect_fw_phexdec("Boot loader data offset",
861 ntohl(hdr->boot_ofs));
862 inspect_fw_phexdec("Boot loader data length",
863 ntohl(hdr->boot_len));
864 inspect_fw_phexdec("Total firmware length",
865 ntohl(hdr->fw_length));
866
867 if (extract) {
868 FILE *fp;
869 char *filename;
870
871 printf("\n");
872
873 filename = malloc(strlen(inspect_info.file_name) + 8);
874 sprintf(filename, "%s-kernel", inspect_info.file_name);
875 printf("Extracting kernel to \"%s\"...\n", filename);
876 fp = fopen(filename, "w");
877 if (fp) {
878 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
879 ntohl(hdr->kernel_len), 1, fp)) {
880 ERR("error in fwrite(): %s", strerror(errno));
881 }
882 fclose(fp);
883 } else {
884 ERR("error in fopen(): %s", strerror(errno));
885 }
886 free(filename);
887
888 filename = malloc(strlen(inspect_info.file_name) + 8);
889 sprintf(filename, "%s-rootfs", inspect_info.file_name);
890 printf("Extracting rootfs to \"%s\"...\n", filename);
891 fp = fopen(filename, "w");
892 if (fp) {
893 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
894 ntohl(hdr->rootfs_len), 1, fp)) {
895 ERR("error in fwrite(): %s", strerror(errno));
896 }
897 fclose(fp);
898 } else {
899 ERR("error in fopen(): %s", strerror(errno));
900 }
901 free(filename);
902 }
903
904 out_free_buf:
905 free(buf);
906 out:
907 return ret;
908 }
909
910 int main(int argc, char *argv[])
911 {
912 int ret = EXIT_FAILURE;
913 int err;
914
915 FILE *outfile;
916
917 progname = basename(argv[0]);
918
919 while ( 1 ) {
920 int c;
921
922 c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xhsjv:y:T:e");
923 if (c == -1)
924 break;
925
926 switch (c) {
927 case 'a':
928 sscanf(optarg, "0x%x", &rootfs_align);
929 break;
930 case 'B':
931 board_id = optarg;
932 break;
933 case 'H':
934 opt_hw_id = optarg;
935 break;
936 case 'E':
937 sscanf(optarg, "0x%x", &kernel_ep);
938 break;
939 case 'F':
940 layout_id = optarg;
941 break;
942 case 'W':
943 opt_hw_rev = optarg;
944 break;
945 case 'L':
946 sscanf(optarg, "0x%x", &kernel_la);
947 break;
948 case 'V':
949 version = optarg;
950 break;
951 case 'v':
952 fw_ver = optarg;
953 break;
954 case 'y':
955 sver = optarg;
956 break;
957 case 'N':
958 vendor = optarg;
959 break;
960 case 'c':
961 combined++;
962 break;
963 case 'k':
964 kernel_info.file_name = optarg;
965 break;
966 case 'r':
967 rootfs_info.file_name = optarg;
968 break;
969 case 'R':
970 sscanf(optarg, "0x%x", &rootfs_ofs);
971 break;
972 case 'o':
973 ofname = optarg;
974 break;
975 case 's':
976 strip_padding = 1;
977 break;
978 case 'i':
979 inspect_info.file_name = optarg;
980 break;
981 case 'j':
982 add_jffs2_eof = 1;
983 break;
984 case 'x':
985 extract = 1;
986 break;
987 case 'T':
988 hdr_ver = atoi(optarg);
989 break;
990 case 'e':
991 endian_swap = true;
992 break;
993 case 'h':
994 usage(EXIT_SUCCESS);
995 break;
996 default:
997 usage(EXIT_FAILURE);
998 break;
999 }
1000 }
1001
1002 ret = check_options();
1003 if (ret)
1004 goto out;
1005
1006 if (!inspect_info.file_name)
1007 ret = build_fw();
1008 else
1009 ret = inspect_fw();
1010
1011 out:
1012 return ret;
1013 }
1014
John Crispins staging tree