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[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 HEADER_VERSION_V2 0x02000000
34 #define HWID_ANTMINER_S1 0x04440101
35 #define HWID_ANTMINER_S3 0x04440301
36 #define HWID_GL_INET_V1 0x08000001
37 #define HWID_GS_OOLITE_V1 0x3C000101
38 #define HWID_ONION_OMEGA 0x04700001
39 #define HWID_TL_MR10U_V1 0x00100101
40 #define HWID_TL_MR13U_V1 0x00130101
41 #define HWID_TL_MR3020_V1 0x30200001
42 #define HWID_TL_MR3220_V1 0x32200001
43 #define HWID_TL_MR3220_V2 0x32200002
44 #define HWID_TL_MR3420_V1 0x34200001
45 #define HWID_TL_MR3420_V2 0x34200002
46 #define HWID_TL_WA701N_V1 0x07010001
47 #define HWID_TL_WA701N_V2 0x07010002
48 #define HWID_TL_WA7210N_V2 0x72100002
49 #define HWID_TL_WA7510N_V1 0x75100001
50 #define HWID_TL_WA801ND_V1 0x08010001
51 #define HWID_TL_WA830RE_V1 0x08300010
52 #define HWID_TL_WA830RE_V2 0x08300002
53 #define HWID_TL_WA801ND_V2 0x08010002
54 #define HWID_TL_WA901ND_V1 0x09010001
55 #define HWID_TL_WA901ND_V2 0x09010002
56 #define HWID_TL_WDR4300_V1_IL 0x43008001
57 #define HWID_TL_WDR4900_V1 0x49000001
58 #define HWID_TL_WR703N_V1 0x07030101
59 #define HWID_TL_WR720N_V3 0x07200103
60 #define HWID_TL_WR720N_V4 0x07200104
61 #define HWID_TL_WR741ND_V1 0x07410001
62 #define HWID_TL_WR741ND_V4 0x07410004
63 #define HWID_TL_WR740N_V1 0x07400001
64 #define HWID_TL_WR740N_V3 0x07400003
65 #define HWID_TL_WR743ND_V1 0x07430001
66 #define HWID_TL_WR743ND_V2 0x07430002
67 #define HWID_TL_WR841N_V1_5 0x08410002
68 #define HWID_TL_WR841ND_V3 0x08410003
69 #define HWID_TL_WR841ND_V5 0x08410005
70 #define HWID_TL_WR841ND_V7 0x08410007
71 #define HWID_TL_WR941ND_V2 0x09410002
72 #define HWID_TL_WR941ND_V4 0x09410004
73 #define HWID_TL_WR1043ND_V1 0x10430001
74 #define HWID_TL_WR1043ND_V2 0x10430002
75 #define HWID_TL_WR1041N_V2 0x10410002
76 #define HWID_TL_WR2543N_V1 0x25430001
77
78 #define MD5SUM_LEN 16
79
80 struct file_info {
81 char *file_name; /* name of the file */
82 uint32_t file_size; /* length of the file */
83 };
84
85 struct fw_header {
86 uint32_t version; /* header version */
87 char vendor_name[24];
88 char fw_version[36];
89 uint32_t hw_id; /* hardware id */
90 uint32_t hw_rev; /* hardware revision */
91 uint32_t unk1;
92 uint8_t md5sum1[MD5SUM_LEN];
93 uint32_t unk2;
94 uint8_t md5sum2[MD5SUM_LEN];
95 uint32_t unk3;
96 uint32_t kernel_la; /* kernel load address */
97 uint32_t kernel_ep; /* kernel entry point */
98 uint32_t fw_length; /* total length of the firmware */
99 uint32_t kernel_ofs; /* kernel data offset */
100 uint32_t kernel_len; /* kernel data length */
101 uint32_t rootfs_ofs; /* rootfs data offset */
102 uint32_t rootfs_len; /* rootfs data length */
103 uint32_t boot_ofs; /* bootloader data offset */
104 uint32_t boot_len; /* bootloader data length */
105 uint16_t ver_hi;
106 uint16_t ver_mid;
107 uint16_t ver_lo;
108 uint8_t pad[354];
109 } __attribute__ ((packed));
110
111 struct flash_layout {
112 char *id;
113 uint32_t fw_max_len;
114 uint32_t kernel_la;
115 uint32_t kernel_ep;
116 uint32_t rootfs_ofs;
117 };
118
119 struct board_info {
120 char *id;
121 uint32_t hw_id;
122 uint32_t hw_rev;
123 char *layout_id;
124 };
125
126 /*
127 * Globals
128 */
129 static char *ofname;
130 static char *progname;
131 static char *vendor = "TP-LINK Technologies";
132 static char *version = "ver. 1.0";
133 static char *fw_ver = "0.0.0";
134 static uint32_t hdr_ver = HEADER_VERSION_V1;
135
136 static char *board_id;
137 static struct board_info *board;
138 static char *layout_id;
139 static struct flash_layout *layout;
140 static char *opt_hw_id;
141 static uint32_t hw_id;
142 static char *opt_hw_rev;
143 static uint32_t hw_rev;
144 static uint32_t opt_hdr_ver = 1;
145 static int fw_ver_lo;
146 static int fw_ver_mid;
147 static int fw_ver_hi;
148 static struct file_info kernel_info;
149 static uint32_t kernel_la = 0;
150 static uint32_t kernel_ep = 0;
151 static uint32_t kernel_len = 0;
152 static struct file_info rootfs_info;
153 static uint32_t rootfs_ofs = 0;
154 static uint32_t rootfs_align;
155 static struct file_info boot_info;
156 static int combined;
157 static int strip_padding;
158 static int ignore_size;
159 static int add_jffs2_eof;
160 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
161 static uint32_t fw_max_len;
162 static uint32_t reserved_space;
163
164 static struct file_info inspect_info;
165 static int extract = 0;
166
167 char md5salt_normal[MD5SUM_LEN] = {
168 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
169 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
170 };
171
172 char md5salt_boot[MD5SUM_LEN] = {
173 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
174 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
175 };
176
177 static struct flash_layout layouts[] = {
178 {
179 .id = "4M",
180 .fw_max_len = 0x3c0000,
181 .kernel_la = 0x80060000,
182 .kernel_ep = 0x80060000,
183 .rootfs_ofs = 0x140000,
184 }, {
185 .id = "4Mlzma",
186 .fw_max_len = 0x3c0000,
187 .kernel_la = 0x80060000,
188 .kernel_ep = 0x80060000,
189 .rootfs_ofs = 0x100000,
190 }, {
191 .id = "8M",
192 .fw_max_len = 0x7c0000,
193 .kernel_la = 0x80060000,
194 .kernel_ep = 0x80060000,
195 .rootfs_ofs = 0x140000,
196 }, {
197 .id = "8Mlzma",
198 .fw_max_len = 0x7c0000,
199 .kernel_la = 0x80060000,
200 .kernel_ep = 0x80060000,
201 .rootfs_ofs = 0x100000,
202 }, {
203 .id = "16M",
204 .fw_max_len = 0xf80000,
205 .kernel_la = 0x80060000,
206 .kernel_ep = 0x80060000,
207 .rootfs_ofs = 0x140000,
208 }, {
209 .id = "16Mlzma",
210 .fw_max_len = 0xf80000,
211 .kernel_la = 0x80060000,
212 .kernel_ep = 0x80060000,
213 .rootfs_ofs = 0x100000,
214 }, {
215 .id = "16Mppc",
216 .fw_max_len = 0xf80000,
217 .kernel_la = 0x00000000,
218 .kernel_ep = 0xc0000000,
219 .rootfs_ofs = 0x2a0000,
220 }, {
221 /* terminating entry */
222 }
223 };
224
225 static struct board_info boards[] = {
226 {
227 .id = "TL-MR10Uv1",
228 .hw_id = HWID_TL_MR10U_V1,
229 .hw_rev = 1,
230 .layout_id = "4Mlzma",
231 }, {
232 .id = "TL-MR13Uv1",
233 .hw_id = HWID_TL_MR13U_V1,
234 .hw_rev = 1,
235 .layout_id = "4Mlzma",
236 }, {
237 .id = "TL-MR3020v1",
238 .hw_id = HWID_TL_MR3020_V1,
239 .hw_rev = 1,
240 .layout_id = "4Mlzma",
241 }, {
242 .id = "TL-MR3220v1",
243 .hw_id = HWID_TL_MR3220_V1,
244 .hw_rev = 1,
245 .layout_id = "4M",
246 }, {
247 .id = "TL-MR3220v2",
248 .hw_id = HWID_TL_MR3220_V2,
249 .hw_rev = 1,
250 .layout_id = "4Mlzma",
251 }, {
252 .id = "TL-MR3420v1",
253 .hw_id = HWID_TL_MR3420_V1,
254 .hw_rev = 1,
255 .layout_id = "4M",
256 }, {
257 .id = "TL-MR3420v2",
258 .hw_id = HWID_TL_MR3420_V2,
259 .hw_rev = 1,
260 .layout_id = "4Mlzma",
261 }, {
262 .id = "TL-WA701Nv1",
263 .hw_id = HWID_TL_WA701N_V1,
264 .hw_rev = 1,
265 .layout_id = "4M",
266 }, {
267 .id = "TL-WA701Nv2",
268 .hw_id = HWID_TL_WA701N_V2,
269 .hw_rev = 1,
270 .layout_id = "4Mlzma",
271 }, {
272 .id = "TL-WA7210N",
273 .hw_id = HWID_TL_WA7210N_V2,
274 .hw_rev = 2,
275 .layout_id = "4Mlzma",
276 }, {
277 .id = "TL-WA7510N",
278 .hw_id = HWID_TL_WA7510N_V1,
279 .hw_rev = 1,
280 .layout_id = "4M",
281 }, {
282 .id = "TL-WA801NDv1",
283 .hw_id = HWID_TL_WA801ND_V1,
284 .hw_rev = 1,
285 .layout_id = "4M",
286 }, {
287 .id = "TL-WA830REv1",
288 .hw_id = HWID_TL_WA830RE_V1,
289 .hw_rev = 1,
290 .layout_id = "4M",
291 }, {
292 .id = "TL-WA830REv2",
293 .hw_id = HWID_TL_WA830RE_V2,
294 .hw_rev = 1,
295 .layout_id = "4M",
296 }, {
297 .id = "TL-WA801NDv2",
298 .hw_id = HWID_TL_WA801ND_V2,
299 .hw_rev = 1,
300 .layout_id = "4Mlzma",
301 }, {
302 .id = "TL-WA901NDv1",
303 .hw_id = HWID_TL_WA901ND_V1,
304 .hw_rev = 1,
305 .layout_id = "4M",
306 }, {
307 .id = "TL-WA901NDv2",
308 .hw_id = HWID_TL_WA901ND_V2,
309 .hw_rev = 1,
310 .layout_id = "4M",
311 }, {
312 .id = "TL-WDR4300v1",
313 .hw_id = HWID_TL_WDR4300_V1_IL,
314 .hw_rev = 1,
315 .layout_id = "8Mlzma",
316 }, {
317 .id = "TL-WDR4900v1",
318 .hw_id = HWID_TL_WDR4900_V1,
319 .hw_rev = 1,
320 .layout_id = "16Mppc",
321 }, {
322 .id = "TL-WR741NDv1",
323 .hw_id = HWID_TL_WR741ND_V1,
324 .hw_rev = 1,
325 .layout_id = "4M",
326 }, {
327 .id = "TL-WR741NDv4",
328 .hw_id = HWID_TL_WR741ND_V4,
329 .hw_rev = 1,
330 .layout_id = "4Mlzma",
331 }, {
332 .id = "TL-WR740Nv1",
333 .hw_id = HWID_TL_WR740N_V1,
334 .hw_rev = 1,
335 .layout_id = "4M",
336 }, {
337 .id = "TL-WR740Nv3",
338 .hw_id = HWID_TL_WR740N_V3,
339 .hw_rev = 1,
340 .layout_id = "4M",
341 }, {
342 .id = "TL-WR743NDv1",
343 .hw_id = HWID_TL_WR743ND_V1,
344 .hw_rev = 1,
345 .layout_id = "4M",
346 }, {
347 .id = "TL-WR743NDv2",
348 .hw_id = HWID_TL_WR743ND_V2,
349 .hw_rev = 1,
350 .layout_id = "4Mlzma",
351 }, {
352 .id = "TL-WR841Nv1.5",
353 .hw_id = HWID_TL_WR841N_V1_5,
354 .hw_rev = 2,
355 .layout_id = "4M",
356 }, {
357 .id = "TL-WR841NDv3",
358 .hw_id = HWID_TL_WR841ND_V3,
359 .hw_rev = 3,
360 .layout_id = "4M",
361 }, {
362 .id = "TL-WR841NDv5",
363 .hw_id = HWID_TL_WR841ND_V5,
364 .hw_rev = 1,
365 .layout_id = "4M",
366 }, {
367 .id = "TL-WR841NDv7",
368 .hw_id = HWID_TL_WR841ND_V7,
369 .hw_rev = 1,
370 .layout_id = "4M",
371 }, {
372 .id = "TL-WR941NDv2",
373 .hw_id = HWID_TL_WR941ND_V2,
374 .hw_rev = 2,
375 .layout_id = "4M",
376 }, {
377 .id = "TL-WR941NDv4",
378 .hw_id = HWID_TL_WR941ND_V4,
379 .hw_rev = 1,
380 .layout_id = "4M",
381 }, {
382 .id = "TL-WR1041Nv2",
383 .hw_id = HWID_TL_WR1041N_V2,
384 .hw_rev = 1,
385 .layout_id = "4Mlzma",
386 }, {
387 .id = "TL-WR1043NDv1",
388 .hw_id = HWID_TL_WR1043ND_V1,
389 .hw_rev = 1,
390 .layout_id = "8M",
391 }, {
392 .id = "TL-WR1043NDv2",
393 .hw_id = HWID_TL_WR1043ND_V2,
394 .hw_rev = 1,
395 .layout_id = "8Mlzma",
396 }, {
397 .id = "TL-WR2543Nv1",
398 .hw_id = HWID_TL_WR2543N_V1,
399 .hw_rev = 1,
400 .layout_id = "8Mlzma",
401 }, {
402 .id = "TL-WR703Nv1",
403 .hw_id = HWID_TL_WR703N_V1,
404 .hw_rev = 1,
405 .layout_id = "4Mlzma",
406 }, {
407 .id = "TL-WR720Nv3",
408 .hw_id = HWID_TL_WR720N_V3,
409 .hw_rev = 1,
410 .layout_id = "4Mlzma",
411 }, {
412 .id = "TL-WR720Nv4",
413 .hw_id = HWID_TL_WR720N_V4,
414 .hw_rev = 1,
415 .layout_id = "4Mlzma",
416 }, {
417 .id = "GL-INETv1",
418 .hw_id = HWID_GL_INET_V1,
419 .hw_rev = 1,
420 .layout_id = "8Mlzma",
421 }, {
422 .id = "GS-OOLITEv1",
423 .hw_id = HWID_GS_OOLITE_V1,
424 .hw_rev = 1,
425 .layout_id = "16Mlzma",
426 }, {
427 .id = "ONION-OMEGA",
428 .hw_id = HWID_ONION_OMEGA,
429 .hw_rev = 1,
430 .layout_id = "16Mlzma",
431 }, {
432 .id = "ANTMINER-S1",
433 .hw_id = HWID_ANTMINER_S1,
434 .hw_rev = 1,
435 .layout_id = "8Mlzma",
436 }, {
437 .id = "ANTMINER-S3",
438 .hw_id = HWID_ANTMINER_S3,
439 .hw_rev = 1,
440 .layout_id = "8Mlzma",
441 }, {
442 /* terminating entry */
443 }
444 };
445
446 /*
447 * Message macros
448 */
449 #define ERR(fmt, ...) do { \
450 fflush(0); \
451 fprintf(stderr, "[%s] *** error: " fmt "\n", \
452 progname, ## __VA_ARGS__ ); \
453 } while (0)
454
455 #define ERRS(fmt, ...) do { \
456 int save = errno; \
457 fflush(0); \
458 fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
459 progname, ## __VA_ARGS__, strerror(save)); \
460 } while (0)
461
462 #define DBG(fmt, ...) do { \
463 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
464 } while (0)
465
466 static struct board_info *find_board(char *id)
467 {
468 struct board_info *ret;
469 struct board_info *board;
470
471 ret = NULL;
472 for (board = boards; board->id != NULL; board++){
473 if (strcasecmp(id, board->id) == 0) {
474 ret = board;
475 break;
476 }
477 };
478
479 return ret;
480 }
481
482 static struct board_info *find_board_by_hwid(uint32_t hw_id)
483 {
484 struct board_info *board;
485
486 for (board = boards; board->id != NULL; board++) {
487 if (hw_id == board->hw_id)
488 return board;
489 };
490
491 return NULL;
492 }
493
494 static struct flash_layout *find_layout(char *id)
495 {
496 struct flash_layout *ret;
497 struct flash_layout *l;
498
499 ret = NULL;
500 for (l = layouts; l->id != NULL; l++){
501 if (strcasecmp(id, l->id) == 0) {
502 ret = l;
503 break;
504 }
505 };
506
507 return ret;
508 }
509
510 static void usage(int status)
511 {
512 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
513 struct board_info *board;
514
515 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
516 fprintf(stream,
517 "\n"
518 "Options:\n"
519 " -B <board> create image for the board specified with <board>\n"
520 " -c use combined kernel image\n"
521 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
522 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
523 " -H <hwid> use hardware id specified with <hwid>\n"
524 " -W <hwrev> use hardware revision specified with <hwrev>\n"
525 " -F <id> use flash layout specified with <id>\n"
526 " -k <file> read kernel image from the file <file>\n"
527 " -r <file> read rootfs image from the file <file>\n"
528 " -a <align> align the rootfs start on an <align> bytes boundary\n"
529 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
530 " -o <file> write output to the file <file>\n"
531 " -s strip padding from the end of the image\n"
532 " -S ignore firmware size limit (only for combined images)\n"
533 " -j add jffs2 end-of-filesystem markers\n"
534 " -N <vendor> set image vendor to <vendor>\n"
535 " -V <version> set image version to <version>\n"
536 " -v <version> set firmware version to <version>\n"
537 " -m <version> set header version to <version>\n"
538 " -i <file> inspect given firmware file <file>\n"
539 " -x extract kernel and rootfs while inspecting (requires -i)\n"
540 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
541 " -h show this screen\n"
542 );
543
544 exit(status);
545 }
546
547 static int get_md5(char *data, int size, char *md5)
548 {
549 MD5_CTX ctx;
550
551 MD5_Init(&ctx);
552 MD5_Update(&ctx, data, size);
553 MD5_Final(md5, &ctx);
554 }
555
556 static int get_file_stat(struct file_info *fdata)
557 {
558 struct stat st;
559 int res;
560
561 if (fdata->file_name == NULL)
562 return 0;
563
564 res = stat(fdata->file_name, &st);
565 if (res){
566 ERRS("stat failed on %s", fdata->file_name);
567 return res;
568 }
569
570 fdata->file_size = st.st_size;
571 return 0;
572 }
573
574 static int read_to_buf(struct file_info *fdata, char *buf)
575 {
576 FILE *f;
577 int ret = EXIT_FAILURE;
578
579 f = fopen(fdata->file_name, "r");
580 if (f == NULL) {
581 ERRS("could not open \"%s\" for reading", fdata->file_name);
582 goto out;
583 }
584
585 errno = 0;
586 fread(buf, fdata->file_size, 1, f);
587 if (errno != 0) {
588 ERRS("unable to read from file \"%s\"", fdata->file_name);
589 goto out_close;
590 }
591
592 ret = EXIT_SUCCESS;
593
594 out_close:
595 fclose(f);
596 out:
597 return ret;
598 }
599
600 static int check_options(void)
601 {
602 int ret;
603 int exceed_bytes;
604
605 if (inspect_info.file_name) {
606 ret = get_file_stat(&inspect_info);
607 if (ret)
608 return ret;
609
610 return 0;
611 } else if (extract) {
612 ERR("no firmware for inspection specified");
613 return -1;
614 }
615
616 if (board_id == NULL && opt_hw_id == NULL) {
617 ERR("either board or hardware id must be specified");
618 return -1;
619 }
620
621 if (board_id) {
622 board = find_board(board_id);
623 if (board == NULL) {
624 ERR("unknown/unsupported board id \"%s\"", board_id);
625 return -1;
626 }
627 if (layout_id == NULL)
628 layout_id = board->layout_id;
629
630 hw_id = board->hw_id;
631 hw_rev = board->hw_rev;
632 } else {
633 if (layout_id == NULL) {
634 ERR("flash layout is not specified");
635 return -1;
636 }
637 hw_id = strtoul(opt_hw_id, NULL, 0);
638
639 if (opt_hw_rev)
640 hw_rev = strtoul(opt_hw_rev, NULL, 0);
641 else
642 hw_rev = 1;
643 }
644
645 layout = find_layout(layout_id);
646 if (layout == NULL) {
647 ERR("unknown flash layout \"%s\"", layout_id);
648 return -1;
649 }
650
651 if (!kernel_la)
652 kernel_la = layout->kernel_la;
653 if (!kernel_ep)
654 kernel_ep = layout->kernel_ep;
655 if (!rootfs_ofs)
656 rootfs_ofs = layout->rootfs_ofs;
657
658 if (reserved_space > layout->fw_max_len) {
659 ERR("reserved space is not valid");
660 return -1;
661 }
662
663 fw_max_len = layout->fw_max_len - reserved_space;
664
665 if (kernel_info.file_name == NULL) {
666 ERR("no kernel image specified");
667 return -1;
668 }
669
670 ret = get_file_stat(&kernel_info);
671 if (ret)
672 return ret;
673
674 kernel_len = kernel_info.file_size;
675
676 if (combined) {
677 exceed_bytes = kernel_info.file_size - (fw_max_len - sizeof(struct fw_header));
678 if (exceed_bytes > 0) {
679 if (!ignore_size) {
680 ERR("kernel image is too big by %i bytes", exceed_bytes);
681 return -1;
682 }
683 layout->fw_max_len = sizeof(struct fw_header) +
684 kernel_info.file_size +
685 reserved_space;
686 }
687 } else {
688 if (rootfs_info.file_name == NULL) {
689 ERR("no rootfs image specified");
690 return -1;
691 }
692
693 ret = get_file_stat(&rootfs_info);
694 if (ret)
695 return ret;
696
697 if (rootfs_align) {
698 kernel_len += sizeof(struct fw_header);
699 kernel_len = ALIGN(kernel_len, rootfs_align);
700 kernel_len -= sizeof(struct fw_header);
701
702 DBG("kernel length aligned to %u", kernel_len);
703
704 exceed_bytes = kernel_len + rootfs_info.file_size - (fw_max_len - sizeof(struct fw_header));
705 if (exceed_bytes > 0) {
706 ERR("images are too big by %i bytes", exceed_bytes);
707 return -1;
708 }
709 } else {
710 exceed_bytes = kernel_info.file_size - (rootfs_ofs - sizeof(struct fw_header));
711 if (exceed_bytes > 0) {
712 ERR("kernel image is too big");
713 return -1;
714 }
715
716 exceed_bytes = rootfs_info.file_size - (fw_max_len - rootfs_ofs);
717 if (exceed_bytes > 0) {
718 ERR("rootfs image is too big");
719 return -1;
720 }
721 }
722 }
723
724 if (ofname == NULL) {
725 ERR("no output file specified");
726 return -1;
727 }
728
729 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
730 if (ret != 3) {
731 ERR("invalid firmware version '%s'", fw_ver);
732 return -1;
733 }
734
735 if (opt_hdr_ver == 1) {
736 hdr_ver = HEADER_VERSION_V1;
737 } else if (opt_hdr_ver == 2) {
738 hdr_ver = HEADER_VERSION_V2;
739 } else {
740 ERR("invalid header version '%u'", opt_hdr_ver);
741 return -1;
742 }
743
744 return 0;
745 }
746
747 static void fill_header(char *buf, int len)
748 {
749 struct fw_header *hdr = (struct fw_header *)buf;
750
751 memset(hdr, 0, sizeof(struct fw_header));
752
753 hdr->version = htonl(hdr_ver);
754 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
755 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
756 hdr->hw_id = htonl(hw_id);
757 hdr->hw_rev = htonl(hw_rev);
758
759 if (boot_info.file_size == 0)
760 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
761 else
762 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
763
764 hdr->kernel_la = htonl(kernel_la);
765 hdr->kernel_ep = htonl(kernel_ep);
766 hdr->fw_length = htonl(layout->fw_max_len);
767 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
768 hdr->kernel_len = htonl(kernel_len);
769 if (!combined) {
770 hdr->rootfs_ofs = htonl(rootfs_ofs);
771 hdr->rootfs_len = htonl(rootfs_info.file_size);
772 }
773
774 hdr->ver_hi = htons(fw_ver_hi);
775 hdr->ver_mid = htons(fw_ver_mid);
776 hdr->ver_lo = htons(fw_ver_lo);
777
778 get_md5(buf, len, hdr->md5sum1);
779 }
780
781 static int pad_jffs2(char *buf, int currlen)
782 {
783 int len;
784 uint32_t pad_mask;
785
786 len = currlen;
787 pad_mask = (64 * 1024);
788 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
789 uint32_t mask;
790 int i;
791
792 for (i = 10; i < 32; i++) {
793 mask = 1 << i;
794 if (pad_mask & mask)
795 break;
796 }
797
798 len = ALIGN(len, mask);
799
800 for (i = 10; i < 32; i++) {
801 mask = 1 << i;
802 if ((len & (mask - 1)) == 0)
803 pad_mask &= ~mask;
804 }
805
806 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
807 buf[len + i] = jffs2_eof_mark[i];
808
809 len += sizeof(jffs2_eof_mark);
810 }
811
812 return len;
813 }
814
815 static int write_fw(char *data, int len)
816 {
817 FILE *f;
818 int ret = EXIT_FAILURE;
819
820 f = fopen(ofname, "w");
821 if (f == NULL) {
822 ERRS("could not open \"%s\" for writing", ofname);
823 goto out;
824 }
825
826 errno = 0;
827 fwrite(data, len, 1, f);
828 if (errno) {
829 ERRS("unable to write output file");
830 goto out_flush;
831 }
832
833 DBG("firmware file \"%s\" completed", ofname);
834
835 ret = EXIT_SUCCESS;
836
837 out_flush:
838 fflush(f);
839 fclose(f);
840 if (ret != EXIT_SUCCESS) {
841 unlink(ofname);
842 }
843 out:
844 return ret;
845 }
846
847 static int build_fw(void)
848 {
849 int buflen;
850 char *buf;
851 char *p;
852 int ret = EXIT_FAILURE;
853 int writelen = 0;
854
855 buflen = layout->fw_max_len;
856
857 buf = malloc(buflen);
858 if (!buf) {
859 ERR("no memory for buffer\n");
860 goto out;
861 }
862
863 memset(buf, 0xff, buflen);
864 p = buf + sizeof(struct fw_header);
865 ret = read_to_buf(&kernel_info, p);
866 if (ret)
867 goto out_free_buf;
868
869 writelen = sizeof(struct fw_header) + kernel_len;
870
871 if (!combined) {
872 if (rootfs_align)
873 p = buf + writelen;
874 else
875 p = buf + rootfs_ofs;
876
877 ret = read_to_buf(&rootfs_info, p);
878 if (ret)
879 goto out_free_buf;
880
881 if (rootfs_align)
882 writelen += rootfs_info.file_size;
883 else
884 writelen = rootfs_ofs + rootfs_info.file_size;
885
886 if (add_jffs2_eof)
887 writelen = pad_jffs2(buf, writelen);
888 }
889
890 if (!strip_padding)
891 writelen = buflen;
892
893 fill_header(buf, writelen);
894 ret = write_fw(buf, writelen);
895 if (ret)
896 goto out_free_buf;
897
898 ret = EXIT_SUCCESS;
899
900 out_free_buf:
901 free(buf);
902 out:
903 return ret;
904 }
905
906 /* Helper functions to inspect_fw() representing different output formats */
907 static inline void inspect_fw_pstr(char *label, char *str)
908 {
909 printf("%-23s: %s\n", label, str);
910 }
911
912 static inline void inspect_fw_phex(char *label, uint32_t val)
913 {
914 printf("%-23s: 0x%08x\n", label, val);
915 }
916
917 static inline void inspect_fw_phexpost(char *label,
918 uint32_t val, char *post)
919 {
920 printf("%-23s: 0x%08x (%s)\n", label, val, post);
921 }
922
923 static inline void inspect_fw_phexdef(char *label,
924 uint32_t val, uint32_t defval)
925 {
926 printf("%-23s: 0x%08x ", label, val);
927
928 if (val == defval)
929 printf("(== OpenWrt default)\n");
930 else
931 printf("(OpenWrt default: 0x%08x)\n", defval);
932 }
933
934 static inline void inspect_fw_phexexp(char *label,
935 uint32_t val, uint32_t expval)
936 {
937 printf("%-23s: 0x%08x ", label, val);
938
939 if (val == expval)
940 printf("(ok)\n");
941 else
942 printf("(expected: 0x%08x)\n", expval);
943 }
944
945 static inline void inspect_fw_phexdec(char *label, uint32_t val)
946 {
947 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
948 }
949
950 static inline void inspect_fw_phexdecdef(char *label,
951 uint32_t val, uint32_t defval)
952 {
953 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
954
955 if (val == defval)
956 printf("(== OpenWrt default)\n");
957 else
958 printf("(OpenWrt default: 0x%08x)\n", defval);
959 }
960
961 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
962 {
963 int i;
964
965 printf("%-23s:", label);
966 for (i=0; i<MD5SUM_LEN; i++)
967 printf(" %02x", val[i]);
968 printf(" %s\n", text);
969 }
970
971 static int inspect_fw(void)
972 {
973 char *buf;
974 struct fw_header *hdr;
975 uint8_t md5sum[MD5SUM_LEN];
976 struct board_info *board;
977 int ret = EXIT_FAILURE;
978
979 buf = malloc(inspect_info.file_size);
980 if (!buf) {
981 ERR("no memory for buffer!\n");
982 goto out;
983 }
984
985 ret = read_to_buf(&inspect_info, buf);
986 if (ret)
987 goto out_free_buf;
988 hdr = (struct fw_header *)buf;
989
990 inspect_fw_pstr("File name", inspect_info.file_name);
991 inspect_fw_phexdec("File size", inspect_info.file_size);
992
993 if ((ntohl(hdr->version) != HEADER_VERSION_V1) &&
994 (ntohl(hdr->version) != HEADER_VERSION_V2)) {
995 ERR("file does not seem to have V1/V2 header!\n");
996 goto out_free_buf;
997 }
998
999 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
1000
1001 if (ntohl(hdr->unk1) != 0)
1002 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
1003
1004 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
1005 if (ntohl(hdr->boot_len) == 0)
1006 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
1007 else
1008 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
1009 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
1010
1011 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
1012 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
1013 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
1014 } else {
1015 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
1016 }
1017 if (ntohl(hdr->unk2) != 0)
1018 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
1019 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
1020 "(purpose yet unknown, unchecked here)");
1021 if (ntohl(hdr->unk3) != 0)
1022 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
1023
1024 printf("\n");
1025
1026 inspect_fw_pstr("Vendor name", hdr->vendor_name);
1027 inspect_fw_pstr("Firmware version", hdr->fw_version);
1028 board = find_board_by_hwid(ntohl(hdr->hw_id));
1029 if (board) {
1030 layout = find_layout(board->layout_id);
1031 inspect_fw_phexpost("Hardware ID",
1032 ntohl(hdr->hw_id), board->id);
1033 inspect_fw_phexexp("Hardware Revision",
1034 ntohl(hdr->hw_rev), board->hw_rev);
1035 } else {
1036 inspect_fw_phexpost("Hardware ID",
1037 ntohl(hdr->hw_id), "unknown");
1038 inspect_fw_phex("Hardware Revision",
1039 ntohl(hdr->hw_rev));
1040 }
1041
1042 printf("\n");
1043
1044 inspect_fw_phexdec("Kernel data offset",
1045 ntohl(hdr->kernel_ofs));
1046 inspect_fw_phexdec("Kernel data length",
1047 ntohl(hdr->kernel_len));
1048 if (board) {
1049 inspect_fw_phexdef("Kernel load address",
1050 ntohl(hdr->kernel_la),
1051 layout ? layout->kernel_la : 0xffffffff);
1052 inspect_fw_phexdef("Kernel entry point",
1053 ntohl(hdr->kernel_ep),
1054 layout ? layout->kernel_ep : 0xffffffff);
1055 inspect_fw_phexdecdef("Rootfs data offset",
1056 ntohl(hdr->rootfs_ofs),
1057 layout ? layout->rootfs_ofs : 0xffffffff);
1058 } else {
1059 inspect_fw_phex("Kernel load address",
1060 ntohl(hdr->kernel_la));
1061 inspect_fw_phex("Kernel entry point",
1062 ntohl(hdr->kernel_ep));
1063 inspect_fw_phexdec("Rootfs data offset",
1064 ntohl(hdr->rootfs_ofs));
1065 }
1066 inspect_fw_phexdec("Rootfs data length",
1067 ntohl(hdr->rootfs_len));
1068 inspect_fw_phexdec("Boot loader data offset",
1069 ntohl(hdr->boot_ofs));
1070 inspect_fw_phexdec("Boot loader data length",
1071 ntohl(hdr->boot_len));
1072 inspect_fw_phexdec("Total firmware length",
1073 ntohl(hdr->fw_length));
1074
1075 if (extract) {
1076 FILE *fp;
1077 char *filename;
1078
1079 printf("\n");
1080
1081 filename = malloc(strlen(inspect_info.file_name) + 8);
1082 sprintf(filename, "%s-kernel", inspect_info.file_name);
1083 printf("Extracting kernel to \"%s\"...\n", filename);
1084 fp = fopen(filename, "w");
1085 if (fp) {
1086 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
1087 ntohl(hdr->kernel_len), 1, fp)) {
1088 ERR("error in fwrite(): %s", strerror(errno));
1089 }
1090 fclose(fp);
1091 } else {
1092 ERR("error in fopen(): %s", strerror(errno));
1093 }
1094 free(filename);
1095
1096 filename = malloc(strlen(inspect_info.file_name) + 8);
1097 sprintf(filename, "%s-rootfs", inspect_info.file_name);
1098 printf("Extracting rootfs to \"%s\"...\n", filename);
1099 fp = fopen(filename, "w");
1100 if (fp) {
1101 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
1102 ntohl(hdr->rootfs_len), 1, fp)) {
1103 ERR("error in fwrite(): %s", strerror(errno));
1104 }
1105 fclose(fp);
1106 } else {
1107 ERR("error in fopen(): %s", strerror(errno));
1108 }
1109 free(filename);
1110 }
1111
1112 out_free_buf:
1113 free(buf);
1114 out:
1115 return ret;
1116 }
1117
1118 int main(int argc, char *argv[])
1119 {
1120 int ret = EXIT_FAILURE;
1121 int err;
1122
1123 FILE *outfile;
1124
1125 progname = basename(argv[0]);
1126
1127 while ( 1 ) {
1128 int c;
1129
1130 c = getopt(argc, argv, "a:B:H:E:F:L:m:V:N:W:ci:k:r:R:o:xX:hsSjv:");
1131 if (c == -1)
1132 break;
1133
1134 switch (c) {
1135 case 'a':
1136 sscanf(optarg, "0x%x", &rootfs_align);
1137 break;
1138 case 'B':
1139 board_id = optarg;
1140 break;
1141 case 'H':
1142 opt_hw_id = optarg;
1143 break;
1144 case 'E':
1145 sscanf(optarg, "0x%x", &kernel_ep);
1146 break;
1147 case 'F':
1148 layout_id = optarg;
1149 break;
1150 case 'W':
1151 opt_hw_rev = optarg;
1152 break;
1153 case 'L':
1154 sscanf(optarg, "0x%x", &kernel_la);
1155 break;
1156 case 'm':
1157 sscanf(optarg, "%u", &opt_hdr_ver);
1158 break;
1159 case 'V':
1160 version = optarg;
1161 break;
1162 case 'v':
1163 fw_ver = optarg;
1164 break;
1165 case 'N':
1166 vendor = optarg;
1167 break;
1168 case 'c':
1169 combined++;
1170 break;
1171 case 'k':
1172 kernel_info.file_name = optarg;
1173 break;
1174 case 'r':
1175 rootfs_info.file_name = optarg;
1176 break;
1177 case 'R':
1178 sscanf(optarg, "0x%x", &rootfs_ofs);
1179 break;
1180 case 'o':
1181 ofname = optarg;
1182 break;
1183 case 's':
1184 strip_padding = 1;
1185 break;
1186 case 'S':
1187 ignore_size = 1;
1188 break;
1189 case 'i':
1190 inspect_info.file_name = optarg;
1191 break;
1192 case 'j':
1193 add_jffs2_eof = 1;
1194 break;
1195 case 'x':
1196 extract = 1;
1197 break;
1198 case 'h':
1199 usage(EXIT_SUCCESS);
1200 break;
1201 case 'X':
1202 sscanf(optarg, "0x%x", &reserved_space);
1203 break;
1204 default:
1205 usage(EXIT_FAILURE);
1206 break;
1207 }
1208 }
1209
1210 ret = check_options();
1211 if (ret)
1212 goto out;
1213
1214 if (!inspect_info.file_name)
1215 ret = build_fw();
1216 else
1217 ret = inspect_fw();
1218
1219 out:
1220 return ret;
1221 }
1222
OpenWrt Source Repository