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f0b33a0150ea490bb096a7f8daac137689b54ecc
[openwrt/openwrt.git] / tools / firmware-utils / src / mktplinkfw.c
1 /*
2 * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
3 *
4 * This tool was based on:
5 * TP-Link WR941 V2 firmware checksum fixing tool.
6 * Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published
10 * by the Free Software Foundation.
11 *
12 */
13
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <stdint.h>
17 #include <string.h>
18 #include <unistd.h> /* for unlink() */
19 #include <libgen.h>
20 #include <getopt.h> /* for getopt() */
21 #include <stdarg.h>
22 #include <errno.h>
23 #include <sys/stat.h>
24
25 #include <arpa/inet.h>
26 #include <netinet/in.h>
27
28 #include "md5.h"
29
30 #define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
31
32 #define HEADER_VERSION_V1 0x01000000
33 #define HWID_GS_OOLITE_V1 0x3C000101
34 #define HWID_TL_MR10U_V1 0x00100101
35 #define HWID_TL_MR13U_V1 0x00130101
36 #define HWID_TL_MR3020_V1 0x30200001
37 #define HWID_TL_MR3220_V1 0x32200001
38 #define HWID_TL_MR3220_V2 0x32200002
39 #define HWID_TL_MR3420_V1 0x34200001
40 #define HWID_TL_MR3420_V2 0x34200002
41 #define HWID_TL_WA701N_V1 0x07010001
42 #define HWID_TL_WA7510N_V1 0x75100001
43 #define HWID_TL_WA801ND_V1 0x08010001
44 #define HWID_TL_WA830RE_V1 0x08300010
45 #define HWID_TL_WA830RE_V2 0x08300002
46 #define HWID_TL_WA801ND_V2 0x08010002
47 #define HWID_TL_WA901ND_V1 0x09010001
48 #define HWID_TL_WA901ND_V2 0x09010002
49 #define HWID_TL_WDR4300_V1_IL 0x43008001
50 #define HWID_TL_WDR4900_V1 0x49000001
51 #define HWID_TL_WR703N_V1 0x07030101
52 #define HWID_TL_WR720N_V3 0x07200103
53 #define HWID_TL_WR741ND_V1 0x07410001
54 #define HWID_TL_WR741ND_V4 0x07410004
55 #define HWID_TL_WR740N_V1 0x07400001
56 #define HWID_TL_WR740N_V3 0x07400003
57 #define HWID_TL_WR743ND_V1 0x07430001
58 #define HWID_TL_WR743ND_V2 0x07430002
59 #define HWID_TL_WR841N_V1_5 0x08410002
60 #define HWID_TL_WR841ND_V3 0x08410003
61 #define HWID_TL_WR841ND_V5 0x08410005
62 #define HWID_TL_WR841ND_V7 0x08410007
63 #define HWID_TL_WR941ND_V2 0x09410002
64 #define HWID_TL_WR941ND_V4 0x09410004
65 #define HWID_TL_WR1043ND_V1 0x10430001
66 #define HWID_TL_WR1043ND_V2 0x10430002
67 #define HWID_TL_WR1041N_V2 0x10410002
68 #define HWID_TL_WR2543N_V1 0x25430001
69
70 #define MD5SUM_LEN 16
71
72 struct file_info {
73 char *file_name; /* name of the file */
74 uint32_t file_size; /* length of the file */
75 };
76
77 struct fw_header {
78 uint32_t version; /* header version */
79 char vendor_name[24];
80 char fw_version[36];
81 uint32_t hw_id; /* hardware id */
82 uint32_t hw_rev; /* hardware revision */
83 uint32_t unk1;
84 uint8_t md5sum1[MD5SUM_LEN];
85 uint32_t unk2;
86 uint8_t md5sum2[MD5SUM_LEN];
87 uint32_t unk3;
88 uint32_t kernel_la; /* kernel load address */
89 uint32_t kernel_ep; /* kernel entry point */
90 uint32_t fw_length; /* total length of the firmware */
91 uint32_t kernel_ofs; /* kernel data offset */
92 uint32_t kernel_len; /* kernel data length */
93 uint32_t rootfs_ofs; /* rootfs data offset */
94 uint32_t rootfs_len; /* rootfs data length */
95 uint32_t boot_ofs; /* bootloader data offset */
96 uint32_t boot_len; /* bootloader data length */
97 uint16_t ver_hi;
98 uint16_t ver_mid;
99 uint16_t ver_lo;
100 uint8_t pad[354];
101 } __attribute__ ((packed));
102
103 struct flash_layout {
104 char *id;
105 uint32_t fw_max_len;
106 uint32_t kernel_la;
107 uint32_t kernel_ep;
108 uint32_t rootfs_ofs;
109 };
110
111 struct board_info {
112 char *id;
113 uint32_t hw_id;
114 uint32_t hw_rev;
115 char *layout_id;
116 };
117
118 /*
119 * Globals
120 */
121 static char *ofname;
122 static char *progname;
123 static char *vendor = "TP-LINK Technologies";
124 static char *version = "ver. 1.0";
125 static char *fw_ver = "0.0.0";
126
127 static char *board_id;
128 static struct board_info *board;
129 static char *layout_id;
130 static struct flash_layout *layout;
131 static char *opt_hw_id;
132 static uint32_t hw_id;
133 static char *opt_hw_rev;
134 static uint32_t hw_rev;
135 static int fw_ver_lo;
136 static int fw_ver_mid;
137 static int fw_ver_hi;
138 static struct file_info kernel_info;
139 static uint32_t kernel_la = 0;
140 static uint32_t kernel_ep = 0;
141 static uint32_t kernel_len = 0;
142 static struct file_info rootfs_info;
143 static uint32_t rootfs_ofs = 0;
144 static uint32_t rootfs_align;
145 static struct file_info boot_info;
146 static int combined;
147 static int strip_padding;
148 static int add_jffs2_eof;
149 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
150 static uint32_t fw_max_len;
151 static uint32_t reserved_space;
152
153 static struct file_info inspect_info;
154 static int extract = 0;
155
156 char md5salt_normal[MD5SUM_LEN] = {
157 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
158 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
159 };
160
161 char md5salt_boot[MD5SUM_LEN] = {
162 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
163 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
164 };
165
166 static struct flash_layout layouts[] = {
167 {
168 .id = "4M",
169 .fw_max_len = 0x3c0000,
170 .kernel_la = 0x80060000,
171 .kernel_ep = 0x80060000,
172 .rootfs_ofs = 0x140000,
173 }, {
174 .id = "4Mlzma",
175 .fw_max_len = 0x3c0000,
176 .kernel_la = 0x80060000,
177 .kernel_ep = 0x80060000,
178 .rootfs_ofs = 0x100000,
179 }, {
180 .id = "8M",
181 .fw_max_len = 0x7c0000,
182 .kernel_la = 0x80060000,
183 .kernel_ep = 0x80060000,
184 .rootfs_ofs = 0x140000,
185 }, {
186 .id = "8Mlzma",
187 .fw_max_len = 0x7c0000,
188 .kernel_la = 0x80060000,
189 .kernel_ep = 0x80060000,
190 .rootfs_ofs = 0x100000,
191 }, {
192 .id = "16M",
193 .fw_max_len = 0xf80000,
194 .kernel_la = 0x80060000,
195 .kernel_ep = 0x80060000,
196 .rootfs_ofs = 0x140000,
197 }, {
198 .id = "16Mlzma",
199 .fw_max_len = 0xf80000,
200 .kernel_la = 0x80060000,
201 .kernel_ep = 0x80060000,
202 .rootfs_ofs = 0x100000,
203 }, {
204 .id = "16Mppc",
205 .fw_max_len = 0xf80000,
206 .kernel_la = 0x00000000,
207 .kernel_ep = 0xc0000000,
208 .rootfs_ofs = 0x2a0000,
209 }, {
210 /* terminating entry */
211 }
212 };
213
214 static struct board_info boards[] = {
215 {
216 .id = "TL-MR10Uv1",
217 .hw_id = HWID_TL_MR10U_V1,
218 .hw_rev = 1,
219 .layout_id = "4Mlzma",
220 }, {
221 .id = "TL-MR13Uv1",
222 .hw_id = HWID_TL_MR13U_V1,
223 .hw_rev = 1,
224 .layout_id = "4Mlzma",
225 }, {
226 .id = "TL-MR3020v1",
227 .hw_id = HWID_TL_MR3020_V1,
228 .hw_rev = 1,
229 .layout_id = "4Mlzma",
230 }, {
231 .id = "TL-MR3220v1",
232 .hw_id = HWID_TL_MR3220_V1,
233 .hw_rev = 1,
234 .layout_id = "4M",
235 }, {
236 .id = "TL-MR3220v2",
237 .hw_id = HWID_TL_MR3220_V2,
238 .hw_rev = 1,
239 .layout_id = "4Mlzma",
240 }, {
241 .id = "TL-MR3420v1",
242 .hw_id = HWID_TL_MR3420_V1,
243 .hw_rev = 1,
244 .layout_id = "4M",
245 }, {
246 .id = "TL-MR3420v2",
247 .hw_id = HWID_TL_MR3420_V2,
248 .hw_rev = 1,
249 .layout_id = "4Mlzma",
250 }, {
251 .id = "TL-WA701Nv1",
252 .hw_id = HWID_TL_WA701N_V1,
253 .hw_rev = 1,
254 .layout_id = "4M",
255 }, {
256 .id = "TL-WA7510N",
257 .hw_id = HWID_TL_WA7510N_V1,
258 .hw_rev = 1,
259 .layout_id = "4M",
260 }, {
261 .id = "TL-WA801NDv1",
262 .hw_id = HWID_TL_WA801ND_V1,
263 .hw_rev = 1,
264 .layout_id = "4M",
265 }, {
266 .id = "TL-WA830REv1",
267 .hw_id = HWID_TL_WA830RE_V1,
268 .hw_rev = 1,
269 .layout_id = "4M",
270 }, {
271 .id = "TL-WA830REv2",
272 .hw_id = HWID_TL_WA830RE_V2,
273 .hw_rev = 1,
274 .layout_id = "4M",
275 }, {
276 .id = "TL-WA801NDv2",
277 .hw_id = HWID_TL_WA801ND_V2,
278 .hw_rev = 1,
279 .layout_id = "4Mlzma",
280 }, {
281 .id = "TL-WA901NDv1",
282 .hw_id = HWID_TL_WA901ND_V1,
283 .hw_rev = 1,
284 .layout_id = "4M",
285 }, {
286 .id = "TL-WA901NDv2",
287 .hw_id = HWID_TL_WA901ND_V2,
288 .hw_rev = 1,
289 .layout_id = "4M",
290 }, {
291 .id = "TL-WDR4300v1",
292 .hw_id = HWID_TL_WDR4300_V1_IL,
293 .hw_rev = 1,
294 .layout_id = "8Mlzma",
295 }, {
296 .id = "TL-WDR4900v1",
297 .hw_id = HWID_TL_WDR4900_V1,
298 .hw_rev = 1,
299 .layout_id = "16Mppc",
300 }, {
301 .id = "TL-WR741NDv1",
302 .hw_id = HWID_TL_WR741ND_V1,
303 .hw_rev = 1,
304 .layout_id = "4M",
305 }, {
306 .id = "TL-WR741NDv4",
307 .hw_id = HWID_TL_WR741ND_V4,
308 .hw_rev = 1,
309 .layout_id = "4Mlzma",
310 }, {
311 .id = "TL-WR740Nv1",
312 .hw_id = HWID_TL_WR740N_V1,
313 .hw_rev = 1,
314 .layout_id = "4M",
315 }, {
316 .id = "TL-WR740Nv3",
317 .hw_id = HWID_TL_WR740N_V3,
318 .hw_rev = 1,
319 .layout_id = "4M",
320 }, {
321 .id = "TL-WR743NDv1",
322 .hw_id = HWID_TL_WR743ND_V1,
323 .hw_rev = 1,
324 .layout_id = "4M",
325 }, {
326 .id = "TL-WR743NDv2",
327 .hw_id = HWID_TL_WR743ND_V2,
328 .hw_rev = 1,
329 .layout_id = "4Mlzma",
330 }, {
331 .id = "TL-WR841Nv1.5",
332 .hw_id = HWID_TL_WR841N_V1_5,
333 .hw_rev = 2,
334 .layout_id = "4M",
335 }, {
336 .id = "TL-WR841NDv3",
337 .hw_id = HWID_TL_WR841ND_V3,
338 .hw_rev = 3,
339 .layout_id = "4M",
340 }, {
341 .id = "TL-WR841NDv5",
342 .hw_id = HWID_TL_WR841ND_V5,
343 .hw_rev = 1,
344 .layout_id = "4M",
345 }, {
346 .id = "TL-WR841NDv7",
347 .hw_id = HWID_TL_WR841ND_V7,
348 .hw_rev = 1,
349 .layout_id = "4M",
350 }, {
351 .id = "TL-WR941NDv2",
352 .hw_id = HWID_TL_WR941ND_V2,
353 .hw_rev = 2,
354 .layout_id = "4M",
355 }, {
356 .id = "TL-WR941NDv4",
357 .hw_id = HWID_TL_WR941ND_V4,
358 .hw_rev = 1,
359 .layout_id = "4M",
360 }, {
361 .id = "TL-WR1041Nv2",
362 .hw_id = HWID_TL_WR1041N_V2,
363 .hw_rev = 1,
364 .layout_id = "4Mlzma",
365 }, {
366 .id = "TL-WR1043NDv1",
367 .hw_id = HWID_TL_WR1043ND_V1,
368 .hw_rev = 1,
369 .layout_id = "8M",
370 }, {
371 .id = "TL-WR1043NDv2",
372 .hw_id = HWID_TL_WR1043ND_V2,
373 .hw_rev = 1,
374 .layout_id = "8Mlzma",
375 }, {
376 .id = "TL-WR2543Nv1",
377 .hw_id = HWID_TL_WR2543N_V1,
378 .hw_rev = 1,
379 .layout_id = "8Mlzma",
380 }, {
381 .id = "TL-WR703Nv1",
382 .hw_id = HWID_TL_WR703N_V1,
383 .hw_rev = 1,
384 .layout_id = "4Mlzma",
385 }, {
386 .id = "TL-WR720Nv3",
387 .hw_id = HWID_TL_WR720N_V3,
388 .hw_rev = 1,
389 .layout_id = "4Mlzma",
390 }, {
391 .id = "GS-OOLITEv1",
392 .hw_id = HWID_GS_OOLITE_V1,
393 .hw_rev = 1,
394 .layout_id = "16Mlzma",
395 }, {
396 /* terminating entry */
397 }
398 };
399
400 /*
401 * Message macros
402 */
403 #define ERR(fmt, ...) do { \
404 fflush(0); \
405 fprintf(stderr, "[%s] *** error: " fmt "\n", \
406 progname, ## __VA_ARGS__ ); \
407 } while (0)
408
409 #define ERRS(fmt, ...) do { \
410 int save = errno; \
411 fflush(0); \
412 fprintf(stderr, "[%s] *** error: " fmt "\n", \
413 progname, ## __VA_ARGS__, strerror(save)); \
414 } while (0)
415
416 #define DBG(fmt, ...) do { \
417 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
418 } while (0)
419
420 static struct board_info *find_board(char *id)
421 {
422 struct board_info *ret;
423 struct board_info *board;
424
425 ret = NULL;
426 for (board = boards; board->id != NULL; board++){
427 if (strcasecmp(id, board->id) == 0) {
428 ret = board;
429 break;
430 }
431 };
432
433 return ret;
434 }
435
436 static struct board_info *find_board_by_hwid(uint32_t hw_id)
437 {
438 struct board_info *board;
439
440 for (board = boards; board->id != NULL; board++) {
441 if (hw_id == board->hw_id)
442 return board;
443 };
444
445 return NULL;
446 }
447
448 static struct flash_layout *find_layout(char *id)
449 {
450 struct flash_layout *ret;
451 struct flash_layout *l;
452
453 ret = NULL;
454 for (l = layouts; l->id != NULL; l++){
455 if (strcasecmp(id, l->id) == 0) {
456 ret = l;
457 break;
458 }
459 };
460
461 return ret;
462 }
463
464 static void usage(int status)
465 {
466 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
467 struct board_info *board;
468
469 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
470 fprintf(stream,
471 "\n"
472 "Options:\n"
473 " -B <board> create image for the board specified with <board>\n"
474 " -c use combined kernel image\n"
475 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
476 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
477 " -H <hwid> use hardware id specified with <hwid>\n"
478 " -W <hwrev> use hardware revision specified with <hwrev>\n"
479 " -F <id> use flash layout specified with <id>\n"
480 " -k <file> read kernel image from the file <file>\n"
481 " -r <file> read rootfs image from the file <file>\n"
482 " -a <align> align the rootfs start on an <align> bytes boundary\n"
483 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
484 " -o <file> write output to the file <file>\n"
485 " -s strip padding from the end of the image\n"
486 " -j add jffs2 end-of-filesystem markers\n"
487 " -N <vendor> set image vendor to <vendor>\n"
488 " -V <version> set image version to <version>\n"
489 " -v <version> set firmware version to <version>\n"
490 " -i <file> inspect given firmware file <file>\n"
491 " -x extract kernel and rootfs while inspecting (requires -i)\n"
492 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
493 " -h show this screen\n"
494 );
495
496 exit(status);
497 }
498
499 static int get_md5(char *data, int size, char *md5)
500 {
501 MD5_CTX ctx;
502
503 MD5_Init(&ctx);
504 MD5_Update(&ctx, data, size);
505 MD5_Final(md5, &ctx);
506 }
507
508 static int get_file_stat(struct file_info *fdata)
509 {
510 struct stat st;
511 int res;
512
513 if (fdata->file_name == NULL)
514 return 0;
515
516 res = stat(fdata->file_name, &st);
517 if (res){
518 ERRS("stat failed on %s", fdata->file_name);
519 return res;
520 }
521
522 fdata->file_size = st.st_size;
523 return 0;
524 }
525
526 static int read_to_buf(struct file_info *fdata, char *buf)
527 {
528 FILE *f;
529 int ret = EXIT_FAILURE;
530
531 f = fopen(fdata->file_name, "r");
532 if (f == NULL) {
533 ERRS("could not open \"%s\" for reading", fdata->file_name);
534 goto out;
535 }
536
537 errno = 0;
538 fread(buf, fdata->file_size, 1, f);
539 if (errno != 0) {
540 ERRS("unable to read from file \"%s\"", fdata->file_name);
541 goto out_close;
542 }
543
544 ret = EXIT_SUCCESS;
545
546 out_close:
547 fclose(f);
548 out:
549 return ret;
550 }
551
552 static int check_options(void)
553 {
554 int ret;
555
556 if (inspect_info.file_name) {
557 ret = get_file_stat(&inspect_info);
558 if (ret)
559 return ret;
560
561 return 0;
562 } else if (extract) {
563 ERR("no firmware for inspection specified");
564 return -1;
565 }
566
567 if (board_id == NULL && opt_hw_id == NULL) {
568 ERR("either board or hardware id must be specified");
569 return -1;
570 }
571
572 if (board_id) {
573 board = find_board(board_id);
574 if (board == NULL) {
575 ERR("unknown/unsupported board id \"%s\"", board_id);
576 return -1;
577 }
578 if (layout_id == NULL)
579 layout_id = board->layout_id;
580
581 hw_id = board->hw_id;
582 hw_rev = board->hw_rev;
583 } else {
584 if (layout_id == NULL) {
585 ERR("flash layout is not specified");
586 return -1;
587 }
588 hw_id = strtoul(opt_hw_id, NULL, 0);
589
590 if (opt_hw_rev)
591 hw_rev = strtoul(opt_hw_rev, NULL, 0);
592 else
593 hw_rev = 1;
594 }
595
596 layout = find_layout(layout_id);
597 if (layout == NULL) {
598 ERR("unknown flash layout \"%s\"", layout_id);
599 return -1;
600 }
601
602 if (!kernel_la)
603 kernel_la = layout->kernel_la;
604 if (!kernel_ep)
605 kernel_ep = layout->kernel_ep;
606 if (!rootfs_ofs)
607 rootfs_ofs = layout->rootfs_ofs;
608
609 if (reserved_space > layout->fw_max_len) {
610 ERR("reserved space is not valid");
611 return -1;
612 }
613
614 fw_max_len = layout->fw_max_len - reserved_space;
615
616 if (kernel_info.file_name == NULL) {
617 ERR("no kernel image specified");
618 return -1;
619 }
620
621 ret = get_file_stat(&kernel_info);
622 if (ret)
623 return ret;
624
625 kernel_len = kernel_info.file_size;
626
627 if (combined) {
628 if (kernel_info.file_size >
629 fw_max_len - sizeof(struct fw_header)) {
630 ERR("kernel image is too big");
631 return -1;
632 }
633 } else {
634 if (rootfs_info.file_name == NULL) {
635 ERR("no rootfs image specified");
636 return -1;
637 }
638
639 ret = get_file_stat(&rootfs_info);
640 if (ret)
641 return ret;
642
643 if (rootfs_align) {
644 kernel_len += sizeof(struct fw_header);
645 kernel_len = ALIGN(kernel_len, rootfs_align);
646 kernel_len -= sizeof(struct fw_header);
647
648 DBG("kernel length aligned to %u", kernel_len);
649
650 if (kernel_len + rootfs_info.file_size >
651 fw_max_len - sizeof(struct fw_header)) {
652 ERR("images are too big");
653 return -1;
654 }
655 } else {
656 if (kernel_info.file_size >
657 rootfs_ofs - sizeof(struct fw_header)) {
658 ERR("kernel image is too big");
659 return -1;
660 }
661
662 if (rootfs_info.file_size >
663 (fw_max_len - rootfs_ofs)) {
664 ERR("rootfs image is too big");
665 return -1;
666 }
667 }
668 }
669
670 if (ofname == NULL) {
671 ERR("no output file specified");
672 return -1;
673 }
674
675 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
676 if (ret != 3) {
677 ERR("invalid firmware version '%s'", fw_ver);
678 return -1;
679 }
680
681 return 0;
682 }
683
684 static void fill_header(char *buf, int len)
685 {
686 struct fw_header *hdr = (struct fw_header *)buf;
687
688 memset(hdr, 0, sizeof(struct fw_header));
689
690 hdr->version = htonl(HEADER_VERSION_V1);
691 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
692 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
693 hdr->hw_id = htonl(hw_id);
694 hdr->hw_rev = htonl(hw_rev);
695
696 if (boot_info.file_size == 0)
697 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
698 else
699 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
700
701 hdr->kernel_la = htonl(kernel_la);
702 hdr->kernel_ep = htonl(kernel_ep);
703 hdr->fw_length = htonl(layout->fw_max_len);
704 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
705 hdr->kernel_len = htonl(kernel_len);
706 if (!combined) {
707 hdr->rootfs_ofs = htonl(rootfs_ofs);
708 hdr->rootfs_len = htonl(rootfs_info.file_size);
709 }
710
711 hdr->ver_hi = htons(fw_ver_hi);
712 hdr->ver_mid = htons(fw_ver_mid);
713 hdr->ver_lo = htons(fw_ver_lo);
714
715 get_md5(buf, len, hdr->md5sum1);
716 }
717
718 static int pad_jffs2(char *buf, int currlen)
719 {
720 int len;
721 uint32_t pad_mask;
722
723 len = currlen;
724 pad_mask = (64 * 1024);
725 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
726 uint32_t mask;
727 int i;
728
729 for (i = 10; i < 32; i++) {
730 mask = 1 << i;
731 if (pad_mask & mask)
732 break;
733 }
734
735 len = ALIGN(len, mask);
736
737 for (i = 10; i < 32; i++) {
738 mask = 1 << i;
739 if ((len & (mask - 1)) == 0)
740 pad_mask &= ~mask;
741 }
742
743 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
744 buf[len + i] = jffs2_eof_mark[i];
745
746 len += sizeof(jffs2_eof_mark);
747 }
748
749 return len;
750 }
751
752 static int write_fw(char *data, int len)
753 {
754 FILE *f;
755 int ret = EXIT_FAILURE;
756
757 f = fopen(ofname, "w");
758 if (f == NULL) {
759 ERRS("could not open \"%s\" for writing", ofname);
760 goto out;
761 }
762
763 errno = 0;
764 fwrite(data, len, 1, f);
765 if (errno) {
766 ERRS("unable to write output file");
767 goto out_flush;
768 }
769
770 DBG("firmware file \"%s\" completed", ofname);
771
772 ret = EXIT_SUCCESS;
773
774 out_flush:
775 fflush(f);
776 fclose(f);
777 if (ret != EXIT_SUCCESS) {
778 unlink(ofname);
779 }
780 out:
781 return ret;
782 }
783
784 static int build_fw(void)
785 {
786 int buflen;
787 char *buf;
788 char *p;
789 int ret = EXIT_FAILURE;
790 int writelen = 0;
791
792 buflen = layout->fw_max_len;
793
794 buf = malloc(buflen);
795 if (!buf) {
796 ERR("no memory for buffer\n");
797 goto out;
798 }
799
800 memset(buf, 0xff, buflen);
801 p = buf + sizeof(struct fw_header);
802 ret = read_to_buf(&kernel_info, p);
803 if (ret)
804 goto out_free_buf;
805
806 writelen = sizeof(struct fw_header) + kernel_len;
807
808 if (!combined) {
809 if (rootfs_align)
810 p = buf + writelen;
811 else
812 p = buf + rootfs_ofs;
813
814 ret = read_to_buf(&rootfs_info, p);
815 if (ret)
816 goto out_free_buf;
817
818 if (rootfs_align)
819 writelen += rootfs_info.file_size;
820 else
821 writelen = rootfs_ofs + rootfs_info.file_size;
822
823 if (add_jffs2_eof)
824 writelen = pad_jffs2(buf, writelen);
825 }
826
827 if (!strip_padding)
828 writelen = buflen;
829
830 fill_header(buf, writelen);
831 ret = write_fw(buf, writelen);
832 if (ret)
833 goto out_free_buf;
834
835 ret = EXIT_SUCCESS;
836
837 out_free_buf:
838 free(buf);
839 out:
840 return ret;
841 }
842
843 /* Helper functions to inspect_fw() representing different output formats */
844 static inline void inspect_fw_pstr(char *label, char *str)
845 {
846 printf("%-23s: %s\n", label, str);
847 }
848
849 static inline void inspect_fw_phex(char *label, uint32_t val)
850 {
851 printf("%-23s: 0x%08x\n", label, val);
852 }
853
854 static inline void inspect_fw_phexpost(char *label,
855 uint32_t val, char *post)
856 {
857 printf("%-23s: 0x%08x (%s)\n", label, val, post);
858 }
859
860 static inline void inspect_fw_phexdef(char *label,
861 uint32_t val, uint32_t defval)
862 {
863 printf("%-23s: 0x%08x ", label, val);
864
865 if (val == defval)
866 printf("(== OpenWrt default)\n");
867 else
868 printf("(OpenWrt default: 0x%08x)\n", defval);
869 }
870
871 static inline void inspect_fw_phexexp(char *label,
872 uint32_t val, uint32_t expval)
873 {
874 printf("%-23s: 0x%08x ", label, val);
875
876 if (val == expval)
877 printf("(ok)\n");
878 else
879 printf("(expected: 0x%08x)\n", expval);
880 }
881
882 static inline void inspect_fw_phexdec(char *label, uint32_t val)
883 {
884 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
885 }
886
887 static inline void inspect_fw_phexdecdef(char *label,
888 uint32_t val, uint32_t defval)
889 {
890 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
891
892 if (val == defval)
893 printf("(== OpenWrt default)\n");
894 else
895 printf("(OpenWrt default: 0x%08x)\n", defval);
896 }
897
898 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
899 {
900 int i;
901
902 printf("%-23s:", label);
903 for (i=0; i<MD5SUM_LEN; i++)
904 printf(" %02x", val[i]);
905 printf(" %s\n", text);
906 }
907
908 static int inspect_fw(void)
909 {
910 char *buf;
911 struct fw_header *hdr;
912 uint8_t md5sum[MD5SUM_LEN];
913 struct board_info *board;
914 int ret = EXIT_FAILURE;
915
916 buf = malloc(inspect_info.file_size);
917 if (!buf) {
918 ERR("no memory for buffer!\n");
919 goto out;
920 }
921
922 ret = read_to_buf(&inspect_info, buf);
923 if (ret)
924 goto out_free_buf;
925 hdr = (struct fw_header *)buf;
926
927 inspect_fw_pstr("File name", inspect_info.file_name);
928 inspect_fw_phexdec("File size", inspect_info.file_size);
929
930 if (ntohl(hdr->version) != HEADER_VERSION_V1) {
931 ERR("file does not seem to have V1 header!\n");
932 goto out_free_buf;
933 }
934
935 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
936
937 if (ntohl(hdr->unk1) != 0)
938 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
939
940 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
941 if (ntohl(hdr->boot_len) == 0)
942 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
943 else
944 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
945 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
946
947 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
948 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
949 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
950 } else {
951 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
952 }
953 if (ntohl(hdr->unk2) != 0)
954 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
955 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
956 "(purpose yet unknown, unchecked here)");
957 if (ntohl(hdr->unk3) != 0)
958 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
959
960 printf("\n");
961
962 inspect_fw_pstr("Vendor name", hdr->vendor_name);
963 inspect_fw_pstr("Firmware version", hdr->fw_version);
964 board = find_board_by_hwid(ntohl(hdr->hw_id));
965 if (board) {
966 layout = find_layout(board->layout_id);
967 inspect_fw_phexpost("Hardware ID",
968 ntohl(hdr->hw_id), board->id);
969 inspect_fw_phexexp("Hardware Revision",
970 ntohl(hdr->hw_rev), board->hw_rev);
971 } else {
972 inspect_fw_phexpost("Hardware ID",
973 ntohl(hdr->hw_id), "unknown");
974 inspect_fw_phex("Hardware Revision",
975 ntohl(hdr->hw_rev));
976 }
977
978 printf("\n");
979
980 inspect_fw_phexdec("Kernel data offset",
981 ntohl(hdr->kernel_ofs));
982 inspect_fw_phexdec("Kernel data length",
983 ntohl(hdr->kernel_len));
984 if (board) {
985 inspect_fw_phexdef("Kernel load address",
986 ntohl(hdr->kernel_la),
987 layout ? layout->kernel_la : 0xffffffff);
988 inspect_fw_phexdef("Kernel entry point",
989 ntohl(hdr->kernel_ep),
990 layout ? layout->kernel_ep : 0xffffffff);
991 inspect_fw_phexdecdef("Rootfs data offset",
992 ntohl(hdr->rootfs_ofs),
993 layout ? layout->rootfs_ofs : 0xffffffff);
994 } else {
995 inspect_fw_phex("Kernel load address",
996 ntohl(hdr->kernel_la));
997 inspect_fw_phex("Kernel entry point",
998 ntohl(hdr->kernel_ep));
999 inspect_fw_phexdec("Rootfs data offset",
1000 ntohl(hdr->rootfs_ofs));
1001 }
1002 inspect_fw_phexdec("Rootfs data length",
1003 ntohl(hdr->rootfs_len));
1004 inspect_fw_phexdec("Boot loader data offset",
1005 ntohl(hdr->boot_ofs));
1006 inspect_fw_phexdec("Boot loader data length",
1007 ntohl(hdr->boot_len));
1008 inspect_fw_phexdec("Total firmware length",
1009 ntohl(hdr->fw_length));
1010
1011 if (extract) {
1012 FILE *fp;
1013 char *filename;
1014
1015 printf("\n");
1016
1017 filename = malloc(strlen(inspect_info.file_name) + 8);
1018 sprintf(filename, "%s-kernel", inspect_info.file_name);
1019 printf("Extracting kernel to \"%s\"...\n", filename);
1020 fp = fopen(filename, "w");
1021 if (fp) {
1022 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
1023 ntohl(hdr->kernel_len), 1, fp)) {
1024 ERR("error in fwrite(): %s", strerror(errno));
1025 }
1026 fclose(fp);
1027 } else {
1028 ERR("error in fopen(): %s", strerror(errno));
1029 }
1030 free(filename);
1031
1032 filename = malloc(strlen(inspect_info.file_name) + 8);
1033 sprintf(filename, "%s-rootfs", inspect_info.file_name);
1034 printf("Extracting rootfs to \"%s\"...\n", filename);
1035 fp = fopen(filename, "w");
1036 if (fp) {
1037 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
1038 ntohl(hdr->rootfs_len), 1, fp)) {
1039 ERR("error in fwrite(): %s", strerror(errno));
1040 }
1041 fclose(fp);
1042 } else {
1043 ERR("error in fopen(): %s", strerror(errno));
1044 }
1045 free(filename);
1046 }
1047
1048 out_free_buf:
1049 free(buf);
1050 out:
1051 return ret;
1052 }
1053
1054 int main(int argc, char *argv[])
1055 {
1056 int ret = EXIT_FAILURE;
1057 int err;
1058
1059 FILE *outfile;
1060
1061 progname = basename(argv[0]);
1062
1063 while ( 1 ) {
1064 int c;
1065
1066 c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xX:hsjv:");
1067 if (c == -1)
1068 break;
1069
1070 switch (c) {
1071 case 'a':
1072 sscanf(optarg, "0x%x", &rootfs_align);
1073 break;
1074 case 'B':
1075 board_id = optarg;
1076 break;
1077 case 'H':
1078 opt_hw_id = optarg;
1079 break;
1080 case 'E':
1081 sscanf(optarg, "0x%x", &kernel_ep);
1082 break;
1083 case 'F':
1084 layout_id = optarg;
1085 break;
1086 case 'W':
1087 opt_hw_rev = optarg;
1088 break;
1089 case 'L':
1090 sscanf(optarg, "0x%x", &kernel_la);
1091 break;
1092 case 'V':
1093 version = optarg;
1094 break;
1095 case 'v':
1096 fw_ver = optarg;
1097 break;
1098 case 'N':
1099 vendor = optarg;
1100 break;
1101 case 'c':
1102 combined++;
1103 break;
1104 case 'k':
1105 kernel_info.file_name = optarg;
1106 break;
1107 case 'r':
1108 rootfs_info.file_name = optarg;
1109 break;
1110 case 'R':
1111 sscanf(optarg, "0x%x", &rootfs_ofs);
1112 break;
1113 case 'o':
1114 ofname = optarg;
1115 break;
1116 case 's':
1117 strip_padding = 1;
1118 break;
1119 case 'i':
1120 inspect_info.file_name = optarg;
1121 break;
1122 case 'j':
1123 add_jffs2_eof = 1;
1124 break;
1125 case 'x':
1126 extract = 1;
1127 break;
1128 case 'h':
1129 usage(EXIT_SUCCESS);
1130 break;
1131 case 'X':
1132 sscanf(optarg, "0x%x", &reserved_space);
1133 break;
1134 default:
1135 usage(EXIT_FAILURE);
1136 break;
1137 }
1138 }
1139
1140 ret = check_options();
1141 if (ret)
1142 goto out;
1143
1144 if (!inspect_info.file_name)
1145 ret = build_fw();
1146 else
1147 ret = inspect_fw();
1148
1149 out:
1150 return ret;
1151 }
1152
OpenWrt Source Repository