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87340db2404f7d00407633f6493d144dd26aba81
[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_ANTMINER_S1 0x04440001
34 #define HWID_GL_INET_V1 0x08000001
35 #define HWID_GS_OOLITE_V1 0x3C000101
36 #define HWID_TL_MR10U_V1 0x00100101
37 #define HWID_TL_MR13U_V1 0x00130101
38 #define HWID_TL_MR3020_V1 0x30200001
39 #define HWID_TL_MR3220_V1 0x32200001
40 #define HWID_TL_MR3220_V2 0x32200002
41 #define HWID_TL_MR3420_V1 0x34200001
42 #define HWID_TL_MR3420_V2 0x34200002
43 #define HWID_TL_WA701N_V1 0x07010001
44 #define HWID_TL_WA701N_V2 0x07010002
45 #define HWID_TL_WA7210N_V2 0x72100002
46 #define HWID_TL_WA7510N_V1 0x75100001
47 #define HWID_TL_WA801ND_V1 0x08010001
48 #define HWID_TL_WA830RE_V1 0x08300010
49 #define HWID_TL_WA830RE_V2 0x08300002
50 #define HWID_TL_WA801ND_V2 0x08010002
51 #define HWID_TL_WA901ND_V1 0x09010001
52 #define HWID_TL_WA901ND_V2 0x09010002
53 #define HWID_TL_WDR4300_V1_IL 0x43008001
54 #define HWID_TL_WDR4900_V1 0x49000001
55 #define HWID_TL_WR703N_V1 0x07030101
56 #define HWID_TL_WR720N_V3 0x07200103
57 #define HWID_TL_WR741ND_V1 0x07410001
58 #define HWID_TL_WR741ND_V4 0x07410004
59 #define HWID_TL_WR740N_V1 0x07400001
60 #define HWID_TL_WR740N_V3 0x07400003
61 #define HWID_TL_WR743ND_V1 0x07430001
62 #define HWID_TL_WR743ND_V2 0x07430002
63 #define HWID_TL_WR841N_V1_5 0x08410002
64 #define HWID_TL_WR841ND_V3 0x08410003
65 #define HWID_TL_WR841ND_V5 0x08410005
66 #define HWID_TL_WR841ND_V7 0x08410007
67 #define HWID_TL_WR941ND_V2 0x09410002
68 #define HWID_TL_WR941ND_V4 0x09410004
69 #define HWID_TL_WR1043ND_V1 0x10430001
70 #define HWID_TL_WR1043ND_V2 0x10430002
71 #define HWID_TL_WR1041N_V2 0x10410002
72 #define HWID_TL_WR2543N_V1 0x25430001
73
74 #define MD5SUM_LEN 16
75
76 struct file_info {
77 char *file_name; /* name of the file */
78 uint32_t file_size; /* length of the file */
79 };
80
81 struct fw_header {
82 uint32_t version; /* header version */
83 char vendor_name[24];
84 char fw_version[36];
85 uint32_t hw_id; /* hardware id */
86 uint32_t hw_rev; /* hardware revision */
87 uint32_t unk1;
88 uint8_t md5sum1[MD5SUM_LEN];
89 uint32_t unk2;
90 uint8_t md5sum2[MD5SUM_LEN];
91 uint32_t unk3;
92 uint32_t kernel_la; /* kernel load address */
93 uint32_t kernel_ep; /* kernel entry point */
94 uint32_t fw_length; /* total length of the firmware */
95 uint32_t kernel_ofs; /* kernel data offset */
96 uint32_t kernel_len; /* kernel data length */
97 uint32_t rootfs_ofs; /* rootfs data offset */
98 uint32_t rootfs_len; /* rootfs data length */
99 uint32_t boot_ofs; /* bootloader data offset */
100 uint32_t boot_len; /* bootloader data length */
101 uint16_t ver_hi;
102 uint16_t ver_mid;
103 uint16_t ver_lo;
104 uint8_t pad[354];
105 } __attribute__ ((packed));
106
107 struct flash_layout {
108 char *id;
109 uint32_t fw_max_len;
110 uint32_t kernel_la;
111 uint32_t kernel_ep;
112 uint32_t rootfs_ofs;
113 };
114
115 struct board_info {
116 char *id;
117 uint32_t hw_id;
118 uint32_t hw_rev;
119 char *layout_id;
120 };
121
122 /*
123 * Globals
124 */
125 static char *ofname;
126 static char *progname;
127 static char *vendor = "TP-LINK Technologies";
128 static char *version = "ver. 1.0";
129 static char *fw_ver = "0.0.0";
130
131 static char *board_id;
132 static struct board_info *board;
133 static char *layout_id;
134 static struct flash_layout *layout;
135 static char *opt_hw_id;
136 static uint32_t hw_id;
137 static char *opt_hw_rev;
138 static uint32_t hw_rev;
139 static int fw_ver_lo;
140 static int fw_ver_mid;
141 static int fw_ver_hi;
142 static struct file_info kernel_info;
143 static uint32_t kernel_la = 0;
144 static uint32_t kernel_ep = 0;
145 static uint32_t kernel_len = 0;
146 static struct file_info rootfs_info;
147 static uint32_t rootfs_ofs = 0;
148 static uint32_t rootfs_align;
149 static struct file_info boot_info;
150 static int combined;
151 static int strip_padding;
152 static int ignore_size;
153 static int add_jffs2_eof;
154 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
155 static uint32_t fw_max_len;
156 static uint32_t reserved_space;
157
158 static struct file_info inspect_info;
159 static int extract = 0;
160
161 char md5salt_normal[MD5SUM_LEN] = {
162 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
163 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
164 };
165
166 char md5salt_boot[MD5SUM_LEN] = {
167 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
168 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
169 };
170
171 static struct flash_layout layouts[] = {
172 {
173 .id = "4M",
174 .fw_max_len = 0x3c0000,
175 .kernel_la = 0x80060000,
176 .kernel_ep = 0x80060000,
177 .rootfs_ofs = 0x140000,
178 }, {
179 .id = "4Mlzma",
180 .fw_max_len = 0x3c0000,
181 .kernel_la = 0x80060000,
182 .kernel_ep = 0x80060000,
183 .rootfs_ofs = 0x100000,
184 }, {
185 .id = "8M",
186 .fw_max_len = 0x7c0000,
187 .kernel_la = 0x80060000,
188 .kernel_ep = 0x80060000,
189 .rootfs_ofs = 0x140000,
190 }, {
191 .id = "8Mlzma",
192 .fw_max_len = 0x7c0000,
193 .kernel_la = 0x80060000,
194 .kernel_ep = 0x80060000,
195 .rootfs_ofs = 0x100000,
196 }, {
197 .id = "16M",
198 .fw_max_len = 0xf80000,
199 .kernel_la = 0x80060000,
200 .kernel_ep = 0x80060000,
201 .rootfs_ofs = 0x140000,
202 }, {
203 .id = "16Mlzma",
204 .fw_max_len = 0xf80000,
205 .kernel_la = 0x80060000,
206 .kernel_ep = 0x80060000,
207 .rootfs_ofs = 0x100000,
208 }, {
209 .id = "16Mppc",
210 .fw_max_len = 0xf80000,
211 .kernel_la = 0x00000000,
212 .kernel_ep = 0xc0000000,
213 .rootfs_ofs = 0x2a0000,
214 }, {
215 /* terminating entry */
216 }
217 };
218
219 static struct board_info boards[] = {
220 {
221 .id = "TL-MR10Uv1",
222 .hw_id = HWID_TL_MR10U_V1,
223 .hw_rev = 1,
224 .layout_id = "4Mlzma",
225 }, {
226 .id = "TL-MR13Uv1",
227 .hw_id = HWID_TL_MR13U_V1,
228 .hw_rev = 1,
229 .layout_id = "4Mlzma",
230 }, {
231 .id = "TL-MR3020v1",
232 .hw_id = HWID_TL_MR3020_V1,
233 .hw_rev = 1,
234 .layout_id = "4Mlzma",
235 }, {
236 .id = "TL-MR3220v1",
237 .hw_id = HWID_TL_MR3220_V1,
238 .hw_rev = 1,
239 .layout_id = "4M",
240 }, {
241 .id = "TL-MR3220v2",
242 .hw_id = HWID_TL_MR3220_V2,
243 .hw_rev = 1,
244 .layout_id = "4Mlzma",
245 }, {
246 .id = "TL-MR3420v1",
247 .hw_id = HWID_TL_MR3420_V1,
248 .hw_rev = 1,
249 .layout_id = "4M",
250 }, {
251 .id = "TL-MR3420v2",
252 .hw_id = HWID_TL_MR3420_V2,
253 .hw_rev = 1,
254 .layout_id = "4Mlzma",
255 }, {
256 .id = "TL-WA701Nv1",
257 .hw_id = HWID_TL_WA701N_V1,
258 .hw_rev = 1,
259 .layout_id = "4M",
260 }, {
261 .id = "TL-WA701Nv2",
262 .hw_id = HWID_TL_WA701N_V2,
263 .hw_rev = 1,
264 .layout_id = "4Mlzma",
265 }, {
266 .id = "TL-WA7210N",
267 .hw_id = HWID_TL_WA7210N_V2,
268 .hw_rev = 2,
269 .layout_id = "4Mlzma",
270 }, {
271 .id = "TL-WA7510N",
272 .hw_id = HWID_TL_WA7510N_V1,
273 .hw_rev = 1,
274 .layout_id = "4M",
275 }, {
276 .id = "TL-WA801NDv1",
277 .hw_id = HWID_TL_WA801ND_V1,
278 .hw_rev = 1,
279 .layout_id = "4M",
280 }, {
281 .id = "TL-WA830REv1",
282 .hw_id = HWID_TL_WA830RE_V1,
283 .hw_rev = 1,
284 .layout_id = "4M",
285 }, {
286 .id = "TL-WA830REv2",
287 .hw_id = HWID_TL_WA830RE_V2,
288 .hw_rev = 1,
289 .layout_id = "4M",
290 }, {
291 .id = "TL-WA801NDv2",
292 .hw_id = HWID_TL_WA801ND_V2,
293 .hw_rev = 1,
294 .layout_id = "4Mlzma",
295 }, {
296 .id = "TL-WA901NDv1",
297 .hw_id = HWID_TL_WA901ND_V1,
298 .hw_rev = 1,
299 .layout_id = "4M",
300 }, {
301 .id = "TL-WA901NDv2",
302 .hw_id = HWID_TL_WA901ND_V2,
303 .hw_rev = 1,
304 .layout_id = "4M",
305 }, {
306 .id = "TL-WDR4300v1",
307 .hw_id = HWID_TL_WDR4300_V1_IL,
308 .hw_rev = 1,
309 .layout_id = "8Mlzma",
310 }, {
311 .id = "TL-WDR4900v1",
312 .hw_id = HWID_TL_WDR4900_V1,
313 .hw_rev = 1,
314 .layout_id = "16Mppc",
315 }, {
316 .id = "TL-WR741NDv1",
317 .hw_id = HWID_TL_WR741ND_V1,
318 .hw_rev = 1,
319 .layout_id = "4M",
320 }, {
321 .id = "TL-WR741NDv4",
322 .hw_id = HWID_TL_WR741ND_V4,
323 .hw_rev = 1,
324 .layout_id = "4Mlzma",
325 }, {
326 .id = "TL-WR740Nv1",
327 .hw_id = HWID_TL_WR740N_V1,
328 .hw_rev = 1,
329 .layout_id = "4M",
330 }, {
331 .id = "TL-WR740Nv3",
332 .hw_id = HWID_TL_WR740N_V3,
333 .hw_rev = 1,
334 .layout_id = "4M",
335 }, {
336 .id = "TL-WR743NDv1",
337 .hw_id = HWID_TL_WR743ND_V1,
338 .hw_rev = 1,
339 .layout_id = "4M",
340 }, {
341 .id = "TL-WR743NDv2",
342 .hw_id = HWID_TL_WR743ND_V2,
343 .hw_rev = 1,
344 .layout_id = "4Mlzma",
345 }, {
346 .id = "TL-WR841Nv1.5",
347 .hw_id = HWID_TL_WR841N_V1_5,
348 .hw_rev = 2,
349 .layout_id = "4M",
350 }, {
351 .id = "TL-WR841NDv3",
352 .hw_id = HWID_TL_WR841ND_V3,
353 .hw_rev = 3,
354 .layout_id = "4M",
355 }, {
356 .id = "TL-WR841NDv5",
357 .hw_id = HWID_TL_WR841ND_V5,
358 .hw_rev = 1,
359 .layout_id = "4M",
360 }, {
361 .id = "TL-WR841NDv7",
362 .hw_id = HWID_TL_WR841ND_V7,
363 .hw_rev = 1,
364 .layout_id = "4M",
365 }, {
366 .id = "TL-WR941NDv2",
367 .hw_id = HWID_TL_WR941ND_V2,
368 .hw_rev = 2,
369 .layout_id = "4M",
370 }, {
371 .id = "TL-WR941NDv4",
372 .hw_id = HWID_TL_WR941ND_V4,
373 .hw_rev = 1,
374 .layout_id = "4M",
375 }, {
376 .id = "TL-WR1041Nv2",
377 .hw_id = HWID_TL_WR1041N_V2,
378 .hw_rev = 1,
379 .layout_id = "4Mlzma",
380 }, {
381 .id = "TL-WR1043NDv1",
382 .hw_id = HWID_TL_WR1043ND_V1,
383 .hw_rev = 1,
384 .layout_id = "8M",
385 }, {
386 .id = "TL-WR1043NDv2",
387 .hw_id = HWID_TL_WR1043ND_V2,
388 .hw_rev = 1,
389 .layout_id = "8Mlzma",
390 }, {
391 .id = "TL-WR2543Nv1",
392 .hw_id = HWID_TL_WR2543N_V1,
393 .hw_rev = 1,
394 .layout_id = "8Mlzma",
395 }, {
396 .id = "TL-WR703Nv1",
397 .hw_id = HWID_TL_WR703N_V1,
398 .hw_rev = 1,
399 .layout_id = "4Mlzma",
400 }, {
401 .id = "TL-WR720Nv3",
402 .hw_id = HWID_TL_WR720N_V3,
403 .hw_rev = 1,
404 .layout_id = "4Mlzma",
405 }, {
406 .id = "GL-INETv1",
407 .hw_id = HWID_GL_INET_V1,
408 .hw_rev = 1,
409 .layout_id = "8Mlzma",
410 }, {
411 .id = "GS-OOLITEv1",
412 .hw_id = HWID_GS_OOLITE_V1,
413 .hw_rev = 1,
414 .layout_id = "16Mlzma",
415 }, {
416 .id = "ANTMINER-S1",
417 .hw_id = HWID_ANTMINER_S1,
418 .hw_rev = 1,
419 .layout_id = "8Mlzma",
420 }, {
421 /* terminating entry */
422 }
423 };
424
425 /*
426 * Message macros
427 */
428 #define ERR(fmt, ...) do { \
429 fflush(0); \
430 fprintf(stderr, "[%s] *** error: " fmt "\n", \
431 progname, ## __VA_ARGS__ ); \
432 } while (0)
433
434 #define ERRS(fmt, ...) do { \
435 int save = errno; \
436 fflush(0); \
437 fprintf(stderr, "[%s] *** error: " fmt "\n", \
438 progname, ## __VA_ARGS__, strerror(save)); \
439 } while (0)
440
441 #define DBG(fmt, ...) do { \
442 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
443 } while (0)
444
445 static struct board_info *find_board(char *id)
446 {
447 struct board_info *ret;
448 struct board_info *board;
449
450 ret = NULL;
451 for (board = boards; board->id != NULL; board++){
452 if (strcasecmp(id, board->id) == 0) {
453 ret = board;
454 break;
455 }
456 };
457
458 return ret;
459 }
460
461 static struct board_info *find_board_by_hwid(uint32_t hw_id)
462 {
463 struct board_info *board;
464
465 for (board = boards; board->id != NULL; board++) {
466 if (hw_id == board->hw_id)
467 return board;
468 };
469
470 return NULL;
471 }
472
473 static struct flash_layout *find_layout(char *id)
474 {
475 struct flash_layout *ret;
476 struct flash_layout *l;
477
478 ret = NULL;
479 for (l = layouts; l->id != NULL; l++){
480 if (strcasecmp(id, l->id) == 0) {
481 ret = l;
482 break;
483 }
484 };
485
486 return ret;
487 }
488
489 static void usage(int status)
490 {
491 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
492 struct board_info *board;
493
494 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
495 fprintf(stream,
496 "\n"
497 "Options:\n"
498 " -B <board> create image for the board specified with <board>\n"
499 " -c use combined kernel image\n"
500 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
501 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
502 " -H <hwid> use hardware id specified with <hwid>\n"
503 " -W <hwrev> use hardware revision specified with <hwrev>\n"
504 " -F <id> use flash layout specified with <id>\n"
505 " -k <file> read kernel image from the file <file>\n"
506 " -r <file> read rootfs image from the file <file>\n"
507 " -a <align> align the rootfs start on an <align> bytes boundary\n"
508 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
509 " -o <file> write output to the file <file>\n"
510 " -s strip padding from the end of the image\n"
511 " -S ignore firmware size limit (only for combined images)\n"
512 " -j add jffs2 end-of-filesystem markers\n"
513 " -N <vendor> set image vendor to <vendor>\n"
514 " -V <version> set image version to <version>\n"
515 " -v <version> set firmware version to <version>\n"
516 " -i <file> inspect given firmware file <file>\n"
517 " -x extract kernel and rootfs while inspecting (requires -i)\n"
518 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
519 " -h show this screen\n"
520 );
521
522 exit(status);
523 }
524
525 static int get_md5(char *data, int size, char *md5)
526 {
527 MD5_CTX ctx;
528
529 MD5_Init(&ctx);
530 MD5_Update(&ctx, data, size);
531 MD5_Final(md5, &ctx);
532 }
533
534 static int get_file_stat(struct file_info *fdata)
535 {
536 struct stat st;
537 int res;
538
539 if (fdata->file_name == NULL)
540 return 0;
541
542 res = stat(fdata->file_name, &st);
543 if (res){
544 ERRS("stat failed on %s", fdata->file_name);
545 return res;
546 }
547
548 fdata->file_size = st.st_size;
549 return 0;
550 }
551
552 static int read_to_buf(struct file_info *fdata, char *buf)
553 {
554 FILE *f;
555 int ret = EXIT_FAILURE;
556
557 f = fopen(fdata->file_name, "r");
558 if (f == NULL) {
559 ERRS("could not open \"%s\" for reading", fdata->file_name);
560 goto out;
561 }
562
563 errno = 0;
564 fread(buf, fdata->file_size, 1, f);
565 if (errno != 0) {
566 ERRS("unable to read from file \"%s\"", fdata->file_name);
567 goto out_close;
568 }
569
570 ret = EXIT_SUCCESS;
571
572 out_close:
573 fclose(f);
574 out:
575 return ret;
576 }
577
578 static int check_options(void)
579 {
580 int ret;
581
582 if (inspect_info.file_name) {
583 ret = get_file_stat(&inspect_info);
584 if (ret)
585 return ret;
586
587 return 0;
588 } else if (extract) {
589 ERR("no firmware for inspection specified");
590 return -1;
591 }
592
593 if (board_id == NULL && opt_hw_id == NULL) {
594 ERR("either board or hardware id must be specified");
595 return -1;
596 }
597
598 if (board_id) {
599 board = find_board(board_id);
600 if (board == NULL) {
601 ERR("unknown/unsupported board id \"%s\"", board_id);
602 return -1;
603 }
604 if (layout_id == NULL)
605 layout_id = board->layout_id;
606
607 hw_id = board->hw_id;
608 hw_rev = board->hw_rev;
609 } else {
610 if (layout_id == NULL) {
611 ERR("flash layout is not specified");
612 return -1;
613 }
614 hw_id = strtoul(opt_hw_id, NULL, 0);
615
616 if (opt_hw_rev)
617 hw_rev = strtoul(opt_hw_rev, NULL, 0);
618 else
619 hw_rev = 1;
620 }
621
622 layout = find_layout(layout_id);
623 if (layout == NULL) {
624 ERR("unknown flash layout \"%s\"", layout_id);
625 return -1;
626 }
627
628 if (!kernel_la)
629 kernel_la = layout->kernel_la;
630 if (!kernel_ep)
631 kernel_ep = layout->kernel_ep;
632 if (!rootfs_ofs)
633 rootfs_ofs = layout->rootfs_ofs;
634
635 if (reserved_space > layout->fw_max_len) {
636 ERR("reserved space is not valid");
637 return -1;
638 }
639
640 fw_max_len = layout->fw_max_len - reserved_space;
641
642 if (kernel_info.file_name == NULL) {
643 ERR("no kernel image specified");
644 return -1;
645 }
646
647 ret = get_file_stat(&kernel_info);
648 if (ret)
649 return ret;
650
651 kernel_len = kernel_info.file_size;
652
653 if (combined) {
654 if (kernel_info.file_size >
655 fw_max_len - sizeof(struct fw_header)) {
656 if (!ignore_size) {
657 ERR("kernel image is too big");
658 return -1;
659 }
660 layout->fw_max_len = sizeof(struct fw_header) +
661 kernel_info.file_size +
662 reserved_space;
663 }
664 } else {
665 if (rootfs_info.file_name == NULL) {
666 ERR("no rootfs image specified");
667 return -1;
668 }
669
670 ret = get_file_stat(&rootfs_info);
671 if (ret)
672 return ret;
673
674 if (rootfs_align) {
675 kernel_len += sizeof(struct fw_header);
676 kernel_len = ALIGN(kernel_len, rootfs_align);
677 kernel_len -= sizeof(struct fw_header);
678
679 DBG("kernel length aligned to %u", kernel_len);
680
681 if (kernel_len + rootfs_info.file_size >
682 fw_max_len - sizeof(struct fw_header)) {
683 ERR("images are too big");
684 return -1;
685 }
686 } else {
687 if (kernel_info.file_size >
688 rootfs_ofs - sizeof(struct fw_header)) {
689 ERR("kernel image is too big");
690 return -1;
691 }
692
693 if (rootfs_info.file_size >
694 (fw_max_len - rootfs_ofs)) {
695 ERR("rootfs image is too big");
696 return -1;
697 }
698 }
699 }
700
701 if (ofname == NULL) {
702 ERR("no output file specified");
703 return -1;
704 }
705
706 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
707 if (ret != 3) {
708 ERR("invalid firmware version '%s'", fw_ver);
709 return -1;
710 }
711
712 return 0;
713 }
714
715 static void fill_header(char *buf, int len)
716 {
717 struct fw_header *hdr = (struct fw_header *)buf;
718
719 memset(hdr, 0, sizeof(struct fw_header));
720
721 hdr->version = htonl(HEADER_VERSION_V1);
722 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
723 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
724 hdr->hw_id = htonl(hw_id);
725 hdr->hw_rev = htonl(hw_rev);
726
727 if (boot_info.file_size == 0)
728 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
729 else
730 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
731
732 hdr->kernel_la = htonl(kernel_la);
733 hdr->kernel_ep = htonl(kernel_ep);
734 hdr->fw_length = htonl(layout->fw_max_len);
735 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
736 hdr->kernel_len = htonl(kernel_len);
737 if (!combined) {
738 hdr->rootfs_ofs = htonl(rootfs_ofs);
739 hdr->rootfs_len = htonl(rootfs_info.file_size);
740 }
741
742 hdr->ver_hi = htons(fw_ver_hi);
743 hdr->ver_mid = htons(fw_ver_mid);
744 hdr->ver_lo = htons(fw_ver_lo);
745
746 get_md5(buf, len, hdr->md5sum1);
747 }
748
749 static int pad_jffs2(char *buf, int currlen)
750 {
751 int len;
752 uint32_t pad_mask;
753
754 len = currlen;
755 pad_mask = (64 * 1024);
756 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
757 uint32_t mask;
758 int i;
759
760 for (i = 10; i < 32; i++) {
761 mask = 1 << i;
762 if (pad_mask & mask)
763 break;
764 }
765
766 len = ALIGN(len, mask);
767
768 for (i = 10; i < 32; i++) {
769 mask = 1 << i;
770 if ((len & (mask - 1)) == 0)
771 pad_mask &= ~mask;
772 }
773
774 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
775 buf[len + i] = jffs2_eof_mark[i];
776
777 len += sizeof(jffs2_eof_mark);
778 }
779
780 return len;
781 }
782
783 static int write_fw(char *data, int len)
784 {
785 FILE *f;
786 int ret = EXIT_FAILURE;
787
788 f = fopen(ofname, "w");
789 if (f == NULL) {
790 ERRS("could not open \"%s\" for writing", ofname);
791 goto out;
792 }
793
794 errno = 0;
795 fwrite(data, len, 1, f);
796 if (errno) {
797 ERRS("unable to write output file");
798 goto out_flush;
799 }
800
801 DBG("firmware file \"%s\" completed", ofname);
802
803 ret = EXIT_SUCCESS;
804
805 out_flush:
806 fflush(f);
807 fclose(f);
808 if (ret != EXIT_SUCCESS) {
809 unlink(ofname);
810 }
811 out:
812 return ret;
813 }
814
815 static int build_fw(void)
816 {
817 int buflen;
818 char *buf;
819 char *p;
820 int ret = EXIT_FAILURE;
821 int writelen = 0;
822
823 buflen = layout->fw_max_len;
824
825 buf = malloc(buflen);
826 if (!buf) {
827 ERR("no memory for buffer\n");
828 goto out;
829 }
830
831 memset(buf, 0xff, buflen);
832 p = buf + sizeof(struct fw_header);
833 ret = read_to_buf(&kernel_info, p);
834 if (ret)
835 goto out_free_buf;
836
837 writelen = sizeof(struct fw_header) + kernel_len;
838
839 if (!combined) {
840 if (rootfs_align)
841 p = buf + writelen;
842 else
843 p = buf + rootfs_ofs;
844
845 ret = read_to_buf(&rootfs_info, p);
846 if (ret)
847 goto out_free_buf;
848
849 if (rootfs_align)
850 writelen += rootfs_info.file_size;
851 else
852 writelen = rootfs_ofs + rootfs_info.file_size;
853
854 if (add_jffs2_eof)
855 writelen = pad_jffs2(buf, writelen);
856 }
857
858 if (!strip_padding)
859 writelen = buflen;
860
861 fill_header(buf, writelen);
862 ret = write_fw(buf, writelen);
863 if (ret)
864 goto out_free_buf;
865
866 ret = EXIT_SUCCESS;
867
868 out_free_buf:
869 free(buf);
870 out:
871 return ret;
872 }
873
874 /* Helper functions to inspect_fw() representing different output formats */
875 static inline void inspect_fw_pstr(char *label, char *str)
876 {
877 printf("%-23s: %s\n", label, str);
878 }
879
880 static inline void inspect_fw_phex(char *label, uint32_t val)
881 {
882 printf("%-23s: 0x%08x\n", label, val);
883 }
884
885 static inline void inspect_fw_phexpost(char *label,
886 uint32_t val, char *post)
887 {
888 printf("%-23s: 0x%08x (%s)\n", label, val, post);
889 }
890
891 static inline void inspect_fw_phexdef(char *label,
892 uint32_t val, uint32_t defval)
893 {
894 printf("%-23s: 0x%08x ", label, val);
895
896 if (val == defval)
897 printf("(== OpenWrt default)\n");
898 else
899 printf("(OpenWrt default: 0x%08x)\n", defval);
900 }
901
902 static inline void inspect_fw_phexexp(char *label,
903 uint32_t val, uint32_t expval)
904 {
905 printf("%-23s: 0x%08x ", label, val);
906
907 if (val == expval)
908 printf("(ok)\n");
909 else
910 printf("(expected: 0x%08x)\n", expval);
911 }
912
913 static inline void inspect_fw_phexdec(char *label, uint32_t val)
914 {
915 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
916 }
917
918 static inline void inspect_fw_phexdecdef(char *label,
919 uint32_t val, uint32_t defval)
920 {
921 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
922
923 if (val == defval)
924 printf("(== OpenWrt default)\n");
925 else
926 printf("(OpenWrt default: 0x%08x)\n", defval);
927 }
928
929 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
930 {
931 int i;
932
933 printf("%-23s:", label);
934 for (i=0; i<MD5SUM_LEN; i++)
935 printf(" %02x", val[i]);
936 printf(" %s\n", text);
937 }
938
939 static int inspect_fw(void)
940 {
941 char *buf;
942 struct fw_header *hdr;
943 uint8_t md5sum[MD5SUM_LEN];
944 struct board_info *board;
945 int ret = EXIT_FAILURE;
946
947 buf = malloc(inspect_info.file_size);
948 if (!buf) {
949 ERR("no memory for buffer!\n");
950 goto out;
951 }
952
953 ret = read_to_buf(&inspect_info, buf);
954 if (ret)
955 goto out_free_buf;
956 hdr = (struct fw_header *)buf;
957
958 inspect_fw_pstr("File name", inspect_info.file_name);
959 inspect_fw_phexdec("File size", inspect_info.file_size);
960
961 if (ntohl(hdr->version) != HEADER_VERSION_V1) {
962 ERR("file does not seem to have V1 header!\n");
963 goto out_free_buf;
964 }
965
966 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
967
968 if (ntohl(hdr->unk1) != 0)
969 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
970
971 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
972 if (ntohl(hdr->boot_len) == 0)
973 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
974 else
975 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
976 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
977
978 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
979 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
980 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
981 } else {
982 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
983 }
984 if (ntohl(hdr->unk2) != 0)
985 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
986 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
987 "(purpose yet unknown, unchecked here)");
988 if (ntohl(hdr->unk3) != 0)
989 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
990
991 printf("\n");
992
993 inspect_fw_pstr("Vendor name", hdr->vendor_name);
994 inspect_fw_pstr("Firmware version", hdr->fw_version);
995 board = find_board_by_hwid(ntohl(hdr->hw_id));
996 if (board) {
997 layout = find_layout(board->layout_id);
998 inspect_fw_phexpost("Hardware ID",
999 ntohl(hdr->hw_id), board->id);
1000 inspect_fw_phexexp("Hardware Revision",
1001 ntohl(hdr->hw_rev), board->hw_rev);
1002 } else {
1003 inspect_fw_phexpost("Hardware ID",
1004 ntohl(hdr->hw_id), "unknown");
1005 inspect_fw_phex("Hardware Revision",
1006 ntohl(hdr->hw_rev));
1007 }
1008
1009 printf("\n");
1010
1011 inspect_fw_phexdec("Kernel data offset",
1012 ntohl(hdr->kernel_ofs));
1013 inspect_fw_phexdec("Kernel data length",
1014 ntohl(hdr->kernel_len));
1015 if (board) {
1016 inspect_fw_phexdef("Kernel load address",
1017 ntohl(hdr->kernel_la),
1018 layout ? layout->kernel_la : 0xffffffff);
1019 inspect_fw_phexdef("Kernel entry point",
1020 ntohl(hdr->kernel_ep),
1021 layout ? layout->kernel_ep : 0xffffffff);
1022 inspect_fw_phexdecdef("Rootfs data offset",
1023 ntohl(hdr->rootfs_ofs),
1024 layout ? layout->rootfs_ofs : 0xffffffff);
1025 } else {
1026 inspect_fw_phex("Kernel load address",
1027 ntohl(hdr->kernel_la));
1028 inspect_fw_phex("Kernel entry point",
1029 ntohl(hdr->kernel_ep));
1030 inspect_fw_phexdec("Rootfs data offset",
1031 ntohl(hdr->rootfs_ofs));
1032 }
1033 inspect_fw_phexdec("Rootfs data length",
1034 ntohl(hdr->rootfs_len));
1035 inspect_fw_phexdec("Boot loader data offset",
1036 ntohl(hdr->boot_ofs));
1037 inspect_fw_phexdec("Boot loader data length",
1038 ntohl(hdr->boot_len));
1039 inspect_fw_phexdec("Total firmware length",
1040 ntohl(hdr->fw_length));
1041
1042 if (extract) {
1043 FILE *fp;
1044 char *filename;
1045
1046 printf("\n");
1047
1048 filename = malloc(strlen(inspect_info.file_name) + 8);
1049 sprintf(filename, "%s-kernel", inspect_info.file_name);
1050 printf("Extracting kernel to \"%s\"...\n", filename);
1051 fp = fopen(filename, "w");
1052 if (fp) {
1053 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
1054 ntohl(hdr->kernel_len), 1, fp)) {
1055 ERR("error in fwrite(): %s", strerror(errno));
1056 }
1057 fclose(fp);
1058 } else {
1059 ERR("error in fopen(): %s", strerror(errno));
1060 }
1061 free(filename);
1062
1063 filename = malloc(strlen(inspect_info.file_name) + 8);
1064 sprintf(filename, "%s-rootfs", inspect_info.file_name);
1065 printf("Extracting rootfs to \"%s\"...\n", filename);
1066 fp = fopen(filename, "w");
1067 if (fp) {
1068 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
1069 ntohl(hdr->rootfs_len), 1, fp)) {
1070 ERR("error in fwrite(): %s", strerror(errno));
1071 }
1072 fclose(fp);
1073 } else {
1074 ERR("error in fopen(): %s", strerror(errno));
1075 }
1076 free(filename);
1077 }
1078
1079 out_free_buf:
1080 free(buf);
1081 out:
1082 return ret;
1083 }
1084
1085 int main(int argc, char *argv[])
1086 {
1087 int ret = EXIT_FAILURE;
1088 int err;
1089
1090 FILE *outfile;
1091
1092 progname = basename(argv[0]);
1093
1094 while ( 1 ) {
1095 int c;
1096
1097 c = getopt(argc, argv, "a:B:H:E:F:L:V:N:W:ci:k:r:R:o:xX:hsSjv:");
1098 if (c == -1)
1099 break;
1100
1101 switch (c) {
1102 case 'a':
1103 sscanf(optarg, "0x%x", &rootfs_align);
1104 break;
1105 case 'B':
1106 board_id = optarg;
1107 break;
1108 case 'H':
1109 opt_hw_id = optarg;
1110 break;
1111 case 'E':
1112 sscanf(optarg, "0x%x", &kernel_ep);
1113 break;
1114 case 'F':
1115 layout_id = optarg;
1116 break;
1117 case 'W':
1118 opt_hw_rev = optarg;
1119 break;
1120 case 'L':
1121 sscanf(optarg, "0x%x", &kernel_la);
1122 break;
1123 case 'V':
1124 version = optarg;
1125 break;
1126 case 'v':
1127 fw_ver = optarg;
1128 break;
1129 case 'N':
1130 vendor = optarg;
1131 break;
1132 case 'c':
1133 combined++;
1134 break;
1135 case 'k':
1136 kernel_info.file_name = optarg;
1137 break;
1138 case 'r':
1139 rootfs_info.file_name = optarg;
1140 break;
1141 case 'R':
1142 sscanf(optarg, "0x%x", &rootfs_ofs);
1143 break;
1144 case 'o':
1145 ofname = optarg;
1146 break;
1147 case 's':
1148 strip_padding = 1;
1149 break;
1150 case 'S':
1151 ignore_size = 1;
1152 break;
1153 case 'i':
1154 inspect_info.file_name = optarg;
1155 break;
1156 case 'j':
1157 add_jffs2_eof = 1;
1158 break;
1159 case 'x':
1160 extract = 1;
1161 break;
1162 case 'h':
1163 usage(EXIT_SUCCESS);
1164 break;
1165 case 'X':
1166 sscanf(optarg, "0x%x", &reserved_space);
1167 break;
1168 default:
1169 usage(EXIT_FAILURE);
1170 break;
1171 }
1172 }
1173
1174 ret = check_options();
1175 if (ret)
1176 goto out;
1177
1178 if (!inspect_info.file_name)
1179 ret = build_fw();
1180 else
1181 ret = inspect_fw();
1182
1183 out:
1184 return ret;
1185 }
1186
OpenWrt Source Repository