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0a5e4c32825f3d3e2de0d35d2817d517342c347a
[openwrt/staging/wigyori.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_GL_INET_V1 0x08000001
34 #define HWID_GS_OOLITE_V1 0x3C000101
35 #define HWID_TL_MR10U_V1 0x00100101
36 #define HWID_TL_MR13U_V1 0x00130101
37 #define HWID_TL_MR3020_V1 0x30200001
38 #define HWID_TL_MR3220_V1 0x32200001
39 #define HWID_TL_MR3220_V2 0x32200002
40 #define HWID_TL_MR3420_V1 0x34200001
41 #define HWID_TL_MR3420_V2 0x34200002
42 #define HWID_TL_WA701N_V1 0x07010001
43 #define HWID_TL_WA701N_V2 0x07010002
44 #define HWID_TL_WA7510N_V1 0x75100001
45 #define HWID_TL_WA801ND_V1 0x08010001
46 #define HWID_TL_WA830RE_V1 0x08300010
47 #define HWID_TL_WA830RE_V2 0x08300002
48 #define HWID_TL_WA801ND_V2 0x08010002
49 #define HWID_TL_WA901ND_V1 0x09010001
50 #define HWID_TL_WA901ND_V2 0x09010002
51 #define HWID_TL_WDR4300_V1_IL 0x43008001
52 #define HWID_TL_WDR4900_V1 0x49000001
53 #define HWID_TL_WR703N_V1 0x07030101
54 #define HWID_TL_WR720N_V3 0x07200103
55 #define HWID_TL_WR741ND_V1 0x07410001
56 #define HWID_TL_WR741ND_V4 0x07410004
57 #define HWID_TL_WR740N_V1 0x07400001
58 #define HWID_TL_WR740N_V3 0x07400003
59 #define HWID_TL_WR743ND_V1 0x07430001
60 #define HWID_TL_WR743ND_V2 0x07430002
61 #define HWID_TL_WR841N_V1_5 0x08410002
62 #define HWID_TL_WR841ND_V3 0x08410003
63 #define HWID_TL_WR841ND_V5 0x08410005
64 #define HWID_TL_WR841ND_V7 0x08410007
65 #define HWID_TL_WR941ND_V2 0x09410002
66 #define HWID_TL_WR941ND_V4 0x09410004
67 #define HWID_TL_WR1043ND_V1 0x10430001
68 #define HWID_TL_WR1043ND_V2 0x10430002
69 #define HWID_TL_WR1041N_V2 0x10410002
70 #define HWID_TL_WR2543N_V1 0x25430001
71
72 #define MD5SUM_LEN 16
73
74 struct file_info {
75 char *file_name; /* name of the file */
76 uint32_t file_size; /* length of the file */
77 };
78
79 struct fw_header {
80 uint32_t version; /* header version */
81 char vendor_name[24];
82 char fw_version[36];
83 uint32_t hw_id; /* hardware id */
84 uint32_t hw_rev; /* hardware revision */
85 uint32_t unk1;
86 uint8_t md5sum1[MD5SUM_LEN];
87 uint32_t unk2;
88 uint8_t md5sum2[MD5SUM_LEN];
89 uint32_t unk3;
90 uint32_t kernel_la; /* kernel load address */
91 uint32_t kernel_ep; /* kernel entry point */
92 uint32_t fw_length; /* total length of the firmware */
93 uint32_t kernel_ofs; /* kernel data offset */
94 uint32_t kernel_len; /* kernel data length */
95 uint32_t rootfs_ofs; /* rootfs data offset */
96 uint32_t rootfs_len; /* rootfs data length */
97 uint32_t boot_ofs; /* bootloader data offset */
98 uint32_t boot_len; /* bootloader data length */
99 uint16_t ver_hi;
100 uint16_t ver_mid;
101 uint16_t ver_lo;
102 uint8_t pad[354];
103 } __attribute__ ((packed));
104
105 struct flash_layout {
106 char *id;
107 uint32_t fw_max_len;
108 uint32_t kernel_la;
109 uint32_t kernel_ep;
110 uint32_t rootfs_ofs;
111 };
112
113 struct board_info {
114 char *id;
115 uint32_t hw_id;
116 uint32_t hw_rev;
117 char *layout_id;
118 };
119
120 /*
121 * Globals
122 */
123 static char *ofname;
124 static char *progname;
125 static char *vendor = "TP-LINK Technologies";
126 static char *version = "ver. 1.0";
127 static char *fw_ver = "0.0.0";
128
129 static char *board_id;
130 static struct board_info *board;
131 static char *layout_id;
132 static struct flash_layout *layout;
133 static char *opt_hw_id;
134 static uint32_t hw_id;
135 static char *opt_hw_rev;
136 static uint32_t hw_rev;
137 static int fw_ver_lo;
138 static int fw_ver_mid;
139 static int fw_ver_hi;
140 static struct file_info kernel_info;
141 static uint32_t kernel_la = 0;
142 static uint32_t kernel_ep = 0;
143 static uint32_t kernel_len = 0;
144 static struct file_info rootfs_info;
145 static uint32_t rootfs_ofs = 0;
146 static uint32_t rootfs_align;
147 static struct file_info boot_info;
148 static int combined;
149 static int strip_padding;
150 static int add_jffs2_eof;
151 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
152 static uint32_t fw_max_len;
153 static uint32_t reserved_space;
154
155 static struct file_info inspect_info;
156 static int extract = 0;
157
158 char md5salt_normal[MD5SUM_LEN] = {
159 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
160 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
161 };
162
163 char md5salt_boot[MD5SUM_LEN] = {
164 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
165 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
166 };
167
168 static struct flash_layout layouts[] = {
169 {
170 .id = "4M",
171 .fw_max_len = 0x3c0000,
172 .kernel_la = 0x80060000,
173 .kernel_ep = 0x80060000,
174 .rootfs_ofs = 0x140000,
175 }, {
176 .id = "4Mlzma",
177 .fw_max_len = 0x3c0000,
178 .kernel_la = 0x80060000,
179 .kernel_ep = 0x80060000,
180 .rootfs_ofs = 0x100000,
181 }, {
182 .id = "8M",
183 .fw_max_len = 0x7c0000,
184 .kernel_la = 0x80060000,
185 .kernel_ep = 0x80060000,
186 .rootfs_ofs = 0x140000,
187 }, {
188 .id = "8Mlzma",
189 .fw_max_len = 0x7c0000,
190 .kernel_la = 0x80060000,
191 .kernel_ep = 0x80060000,
192 .rootfs_ofs = 0x100000,
193 }, {
194 .id = "16M",
195 .fw_max_len = 0xf80000,
196 .kernel_la = 0x80060000,
197 .kernel_ep = 0x80060000,
198 .rootfs_ofs = 0x140000,
199 }, {
200 .id = "16Mlzma",
201 .fw_max_len = 0xf80000,
202 .kernel_la = 0x80060000,
203 .kernel_ep = 0x80060000,
204 .rootfs_ofs = 0x100000,
205 }, {
206 .id = "16Mppc",
207 .fw_max_len = 0xf80000,
208 .kernel_la = 0x00000000,
209 .kernel_ep = 0xc0000000,
210 .rootfs_ofs = 0x2a0000,
211 }, {
212 /* terminating entry */
213 }
214 };
215
216 static struct board_info boards[] = {
217 {
218 .id = "TL-MR10Uv1",
219 .hw_id = HWID_TL_MR10U_V1,
220 .hw_rev = 1,
221 .layout_id = "4Mlzma",
222 }, {
223 .id = "TL-MR13Uv1",
224 .hw_id = HWID_TL_MR13U_V1,
225 .hw_rev = 1,
226 .layout_id = "4Mlzma",
227 }, {
228 .id = "TL-MR3020v1",
229 .hw_id = HWID_TL_MR3020_V1,
230 .hw_rev = 1,
231 .layout_id = "4Mlzma",
232 }, {
233 .id = "TL-MR3220v1",
234 .hw_id = HWID_TL_MR3220_V1,
235 .hw_rev = 1,
236 .layout_id = "4M",
237 }, {
238 .id = "TL-MR3220v2",
239 .hw_id = HWID_TL_MR3220_V2,
240 .hw_rev = 1,
241 .layout_id = "4Mlzma",
242 }, {
243 .id = "TL-MR3420v1",
244 .hw_id = HWID_TL_MR3420_V1,
245 .hw_rev = 1,
246 .layout_id = "4M",
247 }, {
248 .id = "TL-MR3420v2",
249 .hw_id = HWID_TL_MR3420_V2,
250 .hw_rev = 1,
251 .layout_id = "4Mlzma",
252 }, {
253 .id = "TL-WA701Nv1",
254 .hw_id = HWID_TL_WA701N_V1,
255 .hw_rev = 1,
256 .layout_id = "4M",
257 }, {
258 .id = "TL-WA701Nv2",
259 .hw_id = HWID_TL_WA701N_V2,
260 .hw_rev = 1,
261 .layout_id = "4Mlzma",
262 }, {
263 .id = "TL-WA7510N",
264 .hw_id = HWID_TL_WA7510N_V1,
265 .hw_rev = 1,
266 .layout_id = "4M",
267 }, {
268 .id = "TL-WA801NDv1",
269 .hw_id = HWID_TL_WA801ND_V1,
270 .hw_rev = 1,
271 .layout_id = "4M",
272 }, {
273 .id = "TL-WA830REv1",
274 .hw_id = HWID_TL_WA830RE_V1,
275 .hw_rev = 1,
276 .layout_id = "4M",
277 }, {
278 .id = "TL-WA830REv2",
279 .hw_id = HWID_TL_WA830RE_V2,
280 .hw_rev = 1,
281 .layout_id = "4M",
282 }, {
283 .id = "TL-WA801NDv2",
284 .hw_id = HWID_TL_WA801ND_V2,
285 .hw_rev = 1,
286 .layout_id = "4Mlzma",
287 }, {
288 .id = "TL-WA901NDv1",
289 .hw_id = HWID_TL_WA901ND_V1,
290 .hw_rev = 1,
291 .layout_id = "4M",
292 }, {
293 .id = "TL-WA901NDv2",
294 .hw_id = HWID_TL_WA901ND_V2,
295 .hw_rev = 1,
296 .layout_id = "4M",
297 }, {
298 .id = "TL-WDR4300v1",
299 .hw_id = HWID_TL_WDR4300_V1_IL,
300 .hw_rev = 1,
301 .layout_id = "8Mlzma",
302 }, {
303 .id = "TL-WDR4900v1",
304 .hw_id = HWID_TL_WDR4900_V1,
305 .hw_rev = 1,
306 .layout_id = "16Mppc",
307 }, {
308 .id = "TL-WR741NDv1",
309 .hw_id = HWID_TL_WR741ND_V1,
310 .hw_rev = 1,
311 .layout_id = "4M",
312 }, {
313 .id = "TL-WR741NDv4",
314 .hw_id = HWID_TL_WR741ND_V4,
315 .hw_rev = 1,
316 .layout_id = "4Mlzma",
317 }, {
318 .id = "TL-WR740Nv1",
319 .hw_id = HWID_TL_WR740N_V1,
320 .hw_rev = 1,
321 .layout_id = "4M",
322 }, {
323 .id = "TL-WR740Nv3",
324 .hw_id = HWID_TL_WR740N_V3,
325 .hw_rev = 1,
326 .layout_id = "4M",
327 }, {
328 .id = "TL-WR743NDv1",
329 .hw_id = HWID_TL_WR743ND_V1,
330 .hw_rev = 1,
331 .layout_id = "4M",
332 }, {
333 .id = "TL-WR743NDv2",
334 .hw_id = HWID_TL_WR743ND_V2,
335 .hw_rev = 1,
336 .layout_id = "4Mlzma",
337 }, {
338 .id = "TL-WR841Nv1.5",
339 .hw_id = HWID_TL_WR841N_V1_5,
340 .hw_rev = 2,
341 .layout_id = "4M",
342 }, {
343 .id = "TL-WR841NDv3",
344 .hw_id = HWID_TL_WR841ND_V3,
345 .hw_rev = 3,
346 .layout_id = "4M",
347 }, {
348 .id = "TL-WR841NDv5",
349 .hw_id = HWID_TL_WR841ND_V5,
350 .hw_rev = 1,
351 .layout_id = "4M",
352 }, {
353 .id = "TL-WR841NDv7",
354 .hw_id = HWID_TL_WR841ND_V7,
355 .hw_rev = 1,
356 .layout_id = "4M",
357 }, {
358 .id = "TL-WR941NDv2",
359 .hw_id = HWID_TL_WR941ND_V2,
360 .hw_rev = 2,
361 .layout_id = "4M",
362 }, {
363 .id = "TL-WR941NDv4",
364 .hw_id = HWID_TL_WR941ND_V4,
365 .hw_rev = 1,
366 .layout_id = "4M",
367 }, {
368 .id = "TL-WR1041Nv2",
369 .hw_id = HWID_TL_WR1041N_V2,
370 .hw_rev = 1,
371 .layout_id = "4Mlzma",
372 }, {
373 .id = "TL-WR1043NDv1",
374 .hw_id = HWID_TL_WR1043ND_V1,
375 .hw_rev = 1,
376 .layout_id = "8M",
377 }, {
378 .id = "TL-WR1043NDv2",
379 .hw_id = HWID_TL_WR1043ND_V2,
380 .hw_rev = 1,
381 .layout_id = "8Mlzma",
382 }, {
383 .id = "TL-WR2543Nv1",
384 .hw_id = HWID_TL_WR2543N_V1,
385 .hw_rev = 1,
386 .layout_id = "8Mlzma",
387 }, {
388 .id = "TL-WR703Nv1",
389 .hw_id = HWID_TL_WR703N_V1,
390 .hw_rev = 1,
391 .layout_id = "4Mlzma",
392 }, {
393 .id = "TL-WR720Nv3",
394 .hw_id = HWID_TL_WR720N_V3,
395 .hw_rev = 1,
396 .layout_id = "4Mlzma",
397 }, {
398 .id = "GL-INETv1",
399 .hw_id = HWID_GL_INET_V1,
400 .hw_rev = 1,
401 .layout_id = "8Mlzma",
402 }, {
403 .id = "GS-OOLITEv1",
404 .hw_id = HWID_GS_OOLITE_V1,
405 .hw_rev = 1,
406 .layout_id = "16Mlzma",
407 }, {
408 /* terminating entry */
409 }
410 };
411
412 /*
413 * Message macros
414 */
415 #define ERR(fmt, ...) do { \
416 fflush(0); \
417 fprintf(stderr, "[%s] *** error: " fmt "\n", \
418 progname, ## __VA_ARGS__ ); \
419 } while (0)
420
421 #define ERRS(fmt, ...) do { \
422 int save = errno; \
423 fflush(0); \
424 fprintf(stderr, "[%s] *** error: " fmt "\n", \
425 progname, ## __VA_ARGS__, strerror(save)); \
426 } while (0)
427
428 #define DBG(fmt, ...) do { \
429 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
430 } while (0)
431
432 static struct board_info *find_board(char *id)
433 {
434 struct board_info *ret;
435 struct board_info *board;
436
437 ret = NULL;
438 for (board = boards; board->id != NULL; board++){
439 if (strcasecmp(id, board->id) == 0) {
440 ret = board;
441 break;
442 }
443 };
444
445 return ret;
446 }
447
448 static struct board_info *find_board_by_hwid(uint32_t hw_id)
449 {
450 struct board_info *board;
451
452 for (board = boards; board->id != NULL; board++) {
453 if (hw_id == board->hw_id)
454 return board;
455 };
456
457 return NULL;
458 }
459
460 static struct flash_layout *find_layout(char *id)
461 {
462 struct flash_layout *ret;
463 struct flash_layout *l;
464
465 ret = NULL;
466 for (l = layouts; l->id != NULL; l++){
467 if (strcasecmp(id, l->id) == 0) {
468 ret = l;
469 break;
470 }
471 };
472
473 return ret;
474 }
475
476 static void usage(int status)
477 {
478 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
479 struct board_info *board;
480
481 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
482 fprintf(stream,
483 "\n"
484 "Options:\n"
485 " -B <board> create image for the board specified with <board>\n"
486 " -c use combined kernel image\n"
487 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
488 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
489 " -H <hwid> use hardware id specified with <hwid>\n"
490 " -W <hwrev> use hardware revision specified with <hwrev>\n"
491 " -F <id> use flash layout specified with <id>\n"
492 " -k <file> read kernel image from the file <file>\n"
493 " -r <file> read rootfs image from the file <file>\n"
494 " -a <align> align the rootfs start on an <align> bytes boundary\n"
495 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
496 " -o <file> write output to the file <file>\n"
497 " -s strip padding from the end of the image\n"
498 " -j add jffs2 end-of-filesystem markers\n"
499 " -N <vendor> set image vendor to <vendor>\n"
500 " -V <version> set image version to <version>\n"
501 " -v <version> set firmware version to <version>\n"
502 " -i <file> inspect given firmware file <file>\n"
503 " -x extract kernel and rootfs while inspecting (requires -i)\n"
504 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
505 " -h show this screen\n"
506 );
507
508 exit(status);
509 }
510
511 static int get_md5(char *data, int size, char *md5)
512 {
513 MD5_CTX ctx;
514
515 MD5_Init(&ctx);
516 MD5_Update(&ctx, data, size);
517 MD5_Final(md5, &ctx);
518 }
519
520 static int get_file_stat(struct file_info *fdata)
521 {
522 struct stat st;
523 int res;
524
525 if (fdata->file_name == NULL)
526 return 0;
527
528 res = stat(fdata->file_name, &st);
529 if (res){
530 ERRS("stat failed on %s", fdata->file_name);
531 return res;
532 }
533
534 fdata->file_size = st.st_size;
535 return 0;
536 }
537
538 static int read_to_buf(struct file_info *fdata, char *buf)
539 {
540 FILE *f;
541 int ret = EXIT_FAILURE;
542
543 f = fopen(fdata->file_name, "r");
544 if (f == NULL) {
545 ERRS("could not open \"%s\" for reading", fdata->file_name);
546 goto out;
547 }
548
549 errno = 0;
550 fread(buf, fdata->file_size, 1, f);
551 if (errno != 0) {
552 ERRS("unable to read from file \"%s\"", fdata->file_name);
553 goto out_close;
554 }
555
556 ret = EXIT_SUCCESS;
557
558 out_close:
559 fclose(f);
560 out:
561 return ret;
562 }
563
564 static int check_options(void)
565 {
566 int ret;
567
568 if (inspect_info.file_name) {
569 ret = get_file_stat(&inspect_info);
570 if (ret)
571 return ret;
572
573 return 0;
574 } else if (extract) {
575 ERR("no firmware for inspection specified");
576 return -1;
577 }
578
579 if (board_id == NULL && opt_hw_id == NULL) {
580 ERR("either board or hardware id must be specified");
581 return -1;
582 }
583
584 if (board_id) {
585 board = find_board(board_id);
586 if (board == NULL) {
587 ERR("unknown/unsupported board id \"%s\"", board_id);
588 return -1;
589 }
590 if (layout_id == NULL)
591 layout_id = board->layout_id;
592
593 hw_id = board->hw_id;
594 hw_rev = board->hw_rev;
595 } else {
596 if (layout_id == NULL) {
597 ERR("flash layout is not specified");
598 return -1;
599 }
600 hw_id = strtoul(opt_hw_id, NULL, 0);
601
602 if (opt_hw_rev)
603 hw_rev = strtoul(opt_hw_rev, NULL, 0);
604 else
605 hw_rev = 1;
606 }
607
608 layout = find_layout(layout_id);
609 if (layout == NULL) {
610 ERR("unknown flash layout \"%s\"", layout_id);
611 return -1;
612 }
613
614 if (!kernel_la)
615 kernel_la = layout->kernel_la;
616 if (!kernel_ep)
617 kernel_ep = layout->kernel_ep;
618 if (!rootfs_ofs)
619 rootfs_ofs = layout->rootfs_ofs;
620
621 if (reserved_space > layout->fw_max_len) {
622 ERR("reserved space is not valid");
623 return -1;
624 }
625
626 fw_max_len = layout->fw_max_len - reserved_space;
627
628 if (kernel_info.file_name == NULL) {
629 ERR("no kernel image specified");
630 return -1;
631 }
632
633 ret = get_file_stat(&kernel_info);
634 if (ret)
635 return ret;
636
637 kernel_len = kernel_info.file_size;
638
639 if (combined) {
640 if (kernel_info.file_size >
641 fw_max_len - sizeof(struct fw_header)) {
642 ERR("kernel image is too big");
643 return -1;
644 }
645 } else {
646 if (rootfs_info.file_name == NULL) {
647 ERR("no rootfs image specified");
648 return -1;
649 }
650
651 ret = get_file_stat(&rootfs_info);
652 if (ret)
653 return ret;
654
655 if (rootfs_align) {
656 kernel_len += sizeof(struct fw_header);
657 kernel_len = ALIGN(kernel_len, rootfs_align);
658 kernel_len -= sizeof(struct fw_header);
659
660 DBG("kernel length aligned to %u", kernel_len);
661
662 if (kernel_len + rootfs_info.file_size >
663 fw_max_len - sizeof(struct fw_header)) {
664 ERR("images are too big");
665 return -1;
666 }
667 } else {
668 if (kernel_info.file_size >
669 rootfs_ofs - sizeof(struct fw_header)) {
670 ERR("kernel image is too big");
671 return -1;
672 }
673
674 if (rootfs_info.file_size >
675 (fw_max_len - rootfs_ofs)) {
676 ERR("rootfs image is too big");
677 return -1;
678 }
679 }
680 }
681
682 if (ofname == NULL) {
683 ERR("no output file specified");
684 return -1;
685 }
686
687 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
688 if (ret != 3) {
689 ERR("invalid firmware version '%s'", fw_ver);
690 return -1;
691 }
692
693 return 0;
694 }
695
696 static void fill_header(char *buf, int len)
697 {
698 struct fw_header *hdr = (struct fw_header *)buf;
699
700 memset(hdr, 0, sizeof(struct fw_header));
701
702 hdr->version = htonl(HEADER_VERSION_V1);
703 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
704 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
705 hdr->hw_id = htonl(hw_id);
706 hdr->hw_rev = htonl(hw_rev);
707
708 if (boot_info.file_size == 0)
709 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
710 else
711 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
712
713 hdr->kernel_la = htonl(kernel_la);
714 hdr->kernel_ep = htonl(kernel_ep);
715 hdr->fw_length = htonl(layout->fw_max_len);
716 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
717 hdr->kernel_len = htonl(kernel_len);
718 if (!combined) {
719 hdr->rootfs_ofs = htonl(rootfs_ofs);
720 hdr->rootfs_len = htonl(rootfs_info.file_size);
721 }
722
723 hdr->ver_hi = htons(fw_ver_hi);
724 hdr->ver_mid = htons(fw_ver_mid);
725 hdr->ver_lo = htons(fw_ver_lo);
726
727 get_md5(buf, len, hdr->md5sum1);
728 }
729
730 static int pad_jffs2(char *buf, int currlen)
731 {
732 int len;
733 uint32_t pad_mask;
734
735 len = currlen;
736 pad_mask = (64 * 1024);
737 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
738 uint32_t mask;
739 int i;
740
741 for (i = 10; i < 32; i++) {
742 mask = 1 << i;
743 if (pad_mask & mask)
744 break;
745 }
746
747 len = ALIGN(len, mask);
748
749 for (i = 10; i < 32; i++) {
750 mask = 1 << i;
751 if ((len & (mask - 1)) == 0)
752 pad_mask &= ~mask;
753 }
754
755 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
756 buf[len + i] = jffs2_eof_mark[i];
757
758 len += sizeof(jffs2_eof_mark);
759 }
760
761 return len;
762 }
763
764 static int write_fw(char *data, int len)
765 {
766 FILE *f;
767 int ret = EXIT_FAILURE;
768
769 f = fopen(ofname, "w");
770 if (f == NULL) {
771 ERRS("could not open \"%s\" for writing", ofname);
772 goto out;
773 }
774
775 errno = 0;
776 fwrite(data, len, 1, f);
777 if (errno) {
778 ERRS("unable to write output file");
779 goto out_flush;
780 }
781
782 DBG("firmware file \"%s\" completed", ofname);
783
784 ret = EXIT_SUCCESS;
785
786 out_flush:
787 fflush(f);
788 fclose(f);
789 if (ret != EXIT_SUCCESS) {
790 unlink(ofname);
791 }
792 out:
793 return ret;
794 }
795
796 static int build_fw(void)
797 {
798 int buflen;
799 char *buf;
800 char *p;
801 int ret = EXIT_FAILURE;
802 int writelen = 0;
803
804 buflen = layout->fw_max_len;
805
806 buf = malloc(buflen);
807 if (!buf) {
808 ERR("no memory for buffer\n");
809 goto out;
810 }
811
812 memset(buf, 0xff, buflen);
813 p = buf + sizeof(struct fw_header);
814 ret = read_to_buf(&kernel_info, p);
815 if (ret)
816 goto out_free_buf;
817
818 writelen = sizeof(struct fw_header) + kernel_len;
819
820 if (!combined) {
821 if (rootfs_align)
822 p = buf + writelen;
823 else
824 p = buf + rootfs_ofs;
825
826 ret = read_to_buf(&rootfs_info, p);
827 if (ret)
828 goto out_free_buf;
829
830 if (rootfs_align)
831 writelen += rootfs_info.file_size;
832 else
833 writelen = rootfs_ofs + rootfs_info.file_size;
834
835 if (add_jffs2_eof)
836 writelen = pad_jffs2(buf, writelen);
837 }
838
839 if (!strip_padding)
840 writelen = buflen;
841
842 fill_header(buf, writelen);
843 ret = write_fw(buf, writelen);
844 if (ret)
845 goto out_free_buf;
846
847 ret = EXIT_SUCCESS;
848
849 out_free_buf:
850 free(buf);
851 out:
852 return ret;
853 }
854
855 /* Helper functions to inspect_fw() representing different output formats */
856 static inline void inspect_fw_pstr(char *label, char *str)
857 {
858 printf("%-23s: %s\n", label, str);
859 }
860
861 static inline void inspect_fw_phex(char *label, uint32_t val)
862 {
863 printf("%-23s: 0x%08x\n", label, val);
864 }
865
866 static inline void inspect_fw_phexpost(char *label,
867 uint32_t val, char *post)
868 {
869 printf("%-23s: 0x%08x (%s)\n", label, val, post);
870 }
871
872 static inline void inspect_fw_phexdef(char *label,
873 uint32_t val, uint32_t defval)
874 {
875 printf("%-23s: 0x%08x ", label, val);
876
877 if (val == defval)
878 printf("(== OpenWrt default)\n");
879 else
880 printf("(OpenWrt default: 0x%08x)\n", defval);
881 }
882
883 static inline void inspect_fw_phexexp(char *label,
884 uint32_t val, uint32_t expval)
885 {
886 printf("%-23s: 0x%08x ", label, val);
887
888 if (val == expval)
889 printf("(ok)\n");
890 else
891 printf("(expected: 0x%08x)\n", expval);
892 }
893
894 static inline void inspect_fw_phexdec(char *label, uint32_t val)
895 {
896 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
897 }
898
899 static inline void inspect_fw_phexdecdef(char *label,
900 uint32_t val, uint32_t defval)
901 {
902 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
903
904 if (val == defval)
905 printf("(== OpenWrt default)\n");
906 else
907 printf("(OpenWrt default: 0x%08x)\n", defval);
908 }
909
910 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
911 {
912 int i;
913
914 printf("%-23s:", label);
915 for (i=0; i<MD5SUM_LEN; i++)
916 printf(" %02x", val[i]);
917 printf(" %s\n", text);
918 }
919
920 static int inspect_fw(void)
921 {
922 char *buf;
923 struct fw_header *hdr;
924 uint8_t md5sum[MD5SUM_LEN];
925 struct board_info *board;
926 int ret = EXIT_FAILURE;
927
928 buf = malloc(inspect_info.file_size);
929 if (!buf) {
930 ERR("no memory for buffer!\n");
931 goto out;
932 }
933
934 ret = read_to_buf(&inspect_info, buf);
935 if (ret)
936 goto out_free_buf;
937 hdr = (struct fw_header *)buf;
938
939 inspect_fw_pstr("File name", inspect_info.file_name);
940 inspect_fw_phexdec("File size", inspect_info.file_size);
941
942 if (ntohl(hdr->version) != HEADER_VERSION_V1) {
943 ERR("file does not seem to have V1 header!\n");
944 goto out_free_buf;
945 }
946
947 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
948
949 if (ntohl(hdr->unk1) != 0)
950 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
951
952 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
953 if (ntohl(hdr->boot_len) == 0)
954 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
955 else
956 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
957 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
958
959 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
960 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
961 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
962 } else {
963 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
964 }
965 if (ntohl(hdr->unk2) != 0)
966 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
967 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
968 "(purpose yet unknown, unchecked here)");
969 if (ntohl(hdr->unk3) != 0)
970 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
971
972 printf("\n");
973
974 inspect_fw_pstr("Vendor name", hdr->vendor_name);
975 inspect_fw_pstr("Firmware version", hdr->fw_version);
976 board = find_board_by_hwid(ntohl(hdr->hw_id));
977 if (board) {
978 layout = find_layout(board->layout_id);
979 inspect_fw_phexpost("Hardware ID",
980 ntohl(hdr->hw_id), board->id);
981 inspect_fw_phexexp("Hardware Revision",
982 ntohl(hdr->hw_rev), board->hw_rev);
983 } else {
984 inspect_fw_phexpost("Hardware ID",
985 ntohl(hdr->hw_id), "unknown");
986 inspect_fw_phex("Hardware Revision",
987 ntohl(hdr->hw_rev));
988 }
989
990 printf("\n");
991
992 inspect_fw_phexdec("Kernel data offset",
993 ntohl(hdr->kernel_ofs));
994 inspect_fw_phexdec("Kernel data length",
995 ntohl(hdr->kernel_len));
996 if (board) {
997 inspect_fw_phexdef("Kernel load address",
998 ntohl(hdr->kernel_la),
999 layout ? layout->kernel_la : 0xffffffff);
1000 inspect_fw_phexdef("Kernel entry point",
1001 ntohl(hdr->kernel_ep),
1002 layout ? layout->kernel_ep : 0xffffffff);
1003 inspect_fw_phexdecdef("Rootfs data offset",
1004 ntohl(hdr->rootfs_ofs),
1005 layout ? layout->rootfs_ofs : 0xffffffff);
1006 } else {
1007 inspect_fw_phex("Kernel load address",
1008 ntohl(hdr->kernel_la));
1009 inspect_fw_phex("Kernel entry point",
1010 ntohl(hdr->kernel_ep));
1011 inspect_fw_phexdec("Rootfs data offset",
1012 ntohl(hdr->rootfs_ofs));
1013 }
1014 inspect_fw_phexdec("Rootfs data length",
1015 ntohl(hdr->rootfs_len));
1016 inspect_fw_phexdec("Boot loader data offset",
1017 ntohl(hdr->boot_ofs));
1018 inspect_fw_phexdec("Boot loader data length",
1019 ntohl(hdr->boot_len));
1020 inspect_fw_phexdec("Total firmware length",
1021 ntohl(hdr->fw_length));
1022
1023 if (extract) {
1024 FILE *fp;
1025 char *filename;
1026
1027 printf("\n");
1028
1029 filename = malloc(strlen(inspect_info.file_name) + 8);
1030 sprintf(filename, "%s-kernel", inspect_info.file_name);
1031 printf("Extracting kernel to \"%s\"...\n", filename);
1032 fp = fopen(filename, "w");
1033 if (fp) {
1034 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
1035 ntohl(hdr->kernel_len), 1, fp)) {
1036 ERR("error in fwrite(): %s", strerror(errno));
1037 }
1038 fclose(fp);
1039 } else {
1040 ERR("error in fopen(): %s", strerror(errno));
1041 }
1042 free(filename);
1043
1044 filename = malloc(strlen(inspect_info.file_name) + 8);
1045 sprintf(filename, "%s-rootfs", inspect_info.file_name);
1046 printf("Extracting rootfs to \"%s\"...\n", filename);
1047 fp = fopen(filename, "w");
1048 if (fp) {
1049 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
1050 ntohl(hdr->rootfs_len), 1, fp)) {
1051 ERR("error in fwrite(): %s", strerror(errno));
1052 }
1053 fclose(fp);
1054 } else {
1055 ERR("error in fopen(): %s", strerror(errno));
1056 }
1057 free(filename);
1058 }
1059
1060 out_free_buf:
1061 free(buf);
1062 out:
1063 return ret;
1064 }
1065
1066 int main(int argc, char *argv[])
1067 {
1068 int ret = EXIT_FAILURE;
1069 int err;
1070
1071 FILE *outfile;
1072
1073 progname = basename(argv[0]);
1074
1075 while ( 1 ) {
1076 int c;
1077
1078 c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xX:hsjv:");
1079 if (c == -1)
1080 break;
1081
1082 switch (c) {
1083 case 'a':
1084 sscanf(optarg, "0x%x", &rootfs_align);
1085 break;
1086 case 'B':
1087 board_id = optarg;
1088 break;
1089 case 'H':
1090 opt_hw_id = optarg;
1091 break;
1092 case 'E':
1093 sscanf(optarg, "0x%x", &kernel_ep);
1094 break;
1095 case 'F':
1096 layout_id = optarg;
1097 break;
1098 case 'W':
1099 opt_hw_rev = optarg;
1100 break;
1101 case 'L':
1102 sscanf(optarg, "0x%x", &kernel_la);
1103 break;
1104 case 'V':
1105 version = optarg;
1106 break;
1107 case 'v':
1108 fw_ver = optarg;
1109 break;
1110 case 'N':
1111 vendor = optarg;
1112 break;
1113 case 'c':
1114 combined++;
1115 break;
1116 case 'k':
1117 kernel_info.file_name = optarg;
1118 break;
1119 case 'r':
1120 rootfs_info.file_name = optarg;
1121 break;
1122 case 'R':
1123 sscanf(optarg, "0x%x", &rootfs_ofs);
1124 break;
1125 case 'o':
1126 ofname = optarg;
1127 break;
1128 case 's':
1129 strip_padding = 1;
1130 break;
1131 case 'i':
1132 inspect_info.file_name = optarg;
1133 break;
1134 case 'j':
1135 add_jffs2_eof = 1;
1136 break;
1137 case 'x':
1138 extract = 1;
1139 break;
1140 case 'h':
1141 usage(EXIT_SUCCESS);
1142 break;
1143 case 'X':
1144 sscanf(optarg, "0x%x", &reserved_space);
1145 break;
1146 default:
1147 usage(EXIT_FAILURE);
1148 break;
1149 }
1150 }
1151
1152 ret = check_options();
1153 if (ret)
1154 goto out;
1155
1156 if (!inspect_info.file_name)
1157 ret = build_fw();
1158 else
1159 ret = inspect_fw();
1160
1161 out:
1162 return ret;
1163 }
1164
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