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[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 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_OMY_X1 0x06660201
39 #define HWID_ONION_OMEGA 0x04700001
40 #define HWID_TL_MR10U_V1 0x00100101
41 #define HWID_TL_MR13U_V1 0x00130101
42 #define HWID_TL_MR3020_V1 0x30200001
43 #define HWID_TL_MR3220_V1 0x32200001
44 #define HWID_TL_MR3220_V2 0x32200002
45 #define HWID_TL_MR3420_V1 0x34200001
46 #define HWID_TL_MR3420_V2 0x34200002
47 #define HWID_TL_WA701N_V1 0x07010001
48 #define HWID_TL_WA701N_V2 0x07010002
49 #define HWID_TL_WA7210N_V2 0x72100002
50 #define HWID_TL_WA7510N_V1 0x75100001
51 #define HWID_TL_WA801ND_V1 0x08010001
52 #define HWID_TL_WA830RE_V1 0x08300010
53 #define HWID_TL_WA830RE_V2 0x08300002
54 #define HWID_TL_WA801ND_V2 0x08010002
55 #define HWID_TL_WA801ND_V3 0x08010003
56 #define HWID_TL_WA901ND_V1 0x09010001
57 #define HWID_TL_WA901ND_V2 0x09010002
58 #define HWID_TL_WA901ND_V4 0x09010004
59 #define HWID_TL_WDR4300_V1_IL 0x43008001
60 #define HWID_TL_WDR4900_V1 0x49000001
61 #define HWID_TL_WR703N_V1 0x07030101
62 #define HWID_TL_WR720N_V3 0x07200103
63 #define HWID_TL_WR720N_V4 0x07200104
64 #define HWID_TL_WR741ND_V1 0x07410001
65 #define HWID_TL_WR741ND_V4 0x07410004
66 #define HWID_TL_WR740N_V1 0x07400001
67 #define HWID_TL_WR740N_V3 0x07400003
68 #define HWID_TL_WR743ND_V1 0x07430001
69 #define HWID_TL_WR743ND_V2 0x07430002
70 #define HWID_TL_WR841N_V1_5 0x08410002
71 #define HWID_TL_WR841ND_V3 0x08410003
72 #define HWID_TL_WR841ND_V5 0x08410005
73 #define HWID_TL_WR841ND_V7 0x08410007
74 #define HWID_TL_WR941ND_V2 0x09410002
75 #define HWID_TL_WR941ND_V4 0x09410004
76 #define HWID_TL_WR1043ND_V1 0x10430001
77 #define HWID_TL_WR1043ND_V2 0x10430002
78 #define HWID_TL_WR1041N_V2 0x10410002
79 #define HWID_TL_WR2543N_V1 0x25430001
80
81 #define MD5SUM_LEN 16
82
83 struct file_info {
84 char *file_name; /* name of the file */
85 uint32_t file_size; /* length of the file */
86 };
87
88 struct fw_header {
89 uint32_t version; /* header version */
90 char vendor_name[24];
91 char fw_version[36];
92 uint32_t hw_id; /* hardware id */
93 uint32_t hw_rev; /* hardware revision */
94 uint32_t unk1;
95 uint8_t md5sum1[MD5SUM_LEN];
96 uint32_t unk2;
97 uint8_t md5sum2[MD5SUM_LEN];
98 uint32_t unk3;
99 uint32_t kernel_la; /* kernel load address */
100 uint32_t kernel_ep; /* kernel entry point */
101 uint32_t fw_length; /* total length of the firmware */
102 uint32_t kernel_ofs; /* kernel data offset */
103 uint32_t kernel_len; /* kernel data length */
104 uint32_t rootfs_ofs; /* rootfs data offset */
105 uint32_t rootfs_len; /* rootfs data length */
106 uint32_t boot_ofs; /* bootloader data offset */
107 uint32_t boot_len; /* bootloader data length */
108 uint16_t ver_hi;
109 uint16_t ver_mid;
110 uint16_t ver_lo;
111 uint8_t pad[354];
112 } __attribute__ ((packed));
113
114 struct flash_layout {
115 char *id;
116 uint32_t fw_max_len;
117 uint32_t kernel_la;
118 uint32_t kernel_ep;
119 uint32_t rootfs_ofs;
120 };
121
122 struct board_info {
123 char *id;
124 uint32_t hw_id;
125 uint32_t hw_rev;
126 char *layout_id;
127 };
128
129 /*
130 * Globals
131 */
132 static char *ofname;
133 static char *progname;
134 static char *vendor = "TP-LINK Technologies";
135 static char *version = "ver. 1.0";
136 static char *fw_ver = "0.0.0";
137 static uint32_t hdr_ver = HEADER_VERSION_V1;
138
139 static char *board_id;
140 static struct board_info *board;
141 static char *layout_id;
142 static struct flash_layout *layout;
143 static char *opt_hw_id;
144 static uint32_t hw_id;
145 static char *opt_hw_rev;
146 static uint32_t hw_rev;
147 static uint32_t opt_hdr_ver = 1;
148 static int fw_ver_lo;
149 static int fw_ver_mid;
150 static int fw_ver_hi;
151 static struct file_info kernel_info;
152 static uint32_t kernel_la = 0;
153 static uint32_t kernel_ep = 0;
154 static uint32_t kernel_len = 0;
155 static struct file_info rootfs_info;
156 static uint32_t rootfs_ofs = 0;
157 static uint32_t rootfs_align;
158 static struct file_info boot_info;
159 static int combined;
160 static int strip_padding;
161 static int ignore_size;
162 static int add_jffs2_eof;
163 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
164 static uint32_t fw_max_len;
165 static uint32_t reserved_space;
166
167 static struct file_info inspect_info;
168 static int extract = 0;
169
170 char md5salt_normal[MD5SUM_LEN] = {
171 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
172 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
173 };
174
175 char md5salt_boot[MD5SUM_LEN] = {
176 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
177 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
178 };
179
180 static struct flash_layout layouts[] = {
181 {
182 .id = "4M",
183 .fw_max_len = 0x3c0000,
184 .kernel_la = 0x80060000,
185 .kernel_ep = 0x80060000,
186 .rootfs_ofs = 0x140000,
187 }, {
188 .id = "4Mlzma",
189 .fw_max_len = 0x3c0000,
190 .kernel_la = 0x80060000,
191 .kernel_ep = 0x80060000,
192 .rootfs_ofs = 0x100000,
193 }, {
194 .id = "8M",
195 .fw_max_len = 0x7c0000,
196 .kernel_la = 0x80060000,
197 .kernel_ep = 0x80060000,
198 .rootfs_ofs = 0x140000,
199 }, {
200 .id = "8Mlzma",
201 .fw_max_len = 0x7c0000,
202 .kernel_la = 0x80060000,
203 .kernel_ep = 0x80060000,
204 .rootfs_ofs = 0x100000,
205 }, {
206 .id = "16M",
207 .fw_max_len = 0xf80000,
208 .kernel_la = 0x80060000,
209 .kernel_ep = 0x80060000,
210 .rootfs_ofs = 0x140000,
211 }, {
212 .id = "16Mlzma",
213 .fw_max_len = 0xf80000,
214 .kernel_la = 0x80060000,
215 .kernel_ep = 0x80060000,
216 .rootfs_ofs = 0x100000,
217 }, {
218 .id = "16Mppc",
219 .fw_max_len = 0xf80000,
220 .kernel_la = 0x00000000,
221 .kernel_ep = 0xc0000000,
222 .rootfs_ofs = 0x2a0000,
223 }, {
224 /* terminating entry */
225 }
226 };
227
228 static struct board_info boards[] = {
229 {
230 .id = "TL-MR10Uv1",
231 .hw_id = HWID_TL_MR10U_V1,
232 .hw_rev = 1,
233 .layout_id = "4Mlzma",
234 }, {
235 .id = "TL-MR13Uv1",
236 .hw_id = HWID_TL_MR13U_V1,
237 .hw_rev = 1,
238 .layout_id = "4Mlzma",
239 }, {
240 .id = "TL-MR3020v1",
241 .hw_id = HWID_TL_MR3020_V1,
242 .hw_rev = 1,
243 .layout_id = "4Mlzma",
244 }, {
245 .id = "TL-MR3220v1",
246 .hw_id = HWID_TL_MR3220_V1,
247 .hw_rev = 1,
248 .layout_id = "4M",
249 }, {
250 .id = "TL-MR3220v2",
251 .hw_id = HWID_TL_MR3220_V2,
252 .hw_rev = 1,
253 .layout_id = "4Mlzma",
254 }, {
255 .id = "TL-MR3420v1",
256 .hw_id = HWID_TL_MR3420_V1,
257 .hw_rev = 1,
258 .layout_id = "4M",
259 }, {
260 .id = "TL-MR3420v2",
261 .hw_id = HWID_TL_MR3420_V2,
262 .hw_rev = 1,
263 .layout_id = "4Mlzma",
264 }, {
265 .id = "TL-WA701Nv1",
266 .hw_id = HWID_TL_WA701N_V1,
267 .hw_rev = 1,
268 .layout_id = "4M",
269 }, {
270 .id = "TL-WA701Nv2",
271 .hw_id = HWID_TL_WA701N_V2,
272 .hw_rev = 1,
273 .layout_id = "4Mlzma",
274 }, {
275 .id = "TL-WA7210N",
276 .hw_id = HWID_TL_WA7210N_V2,
277 .hw_rev = 2,
278 .layout_id = "4Mlzma",
279 }, {
280 .id = "TL-WA7510N",
281 .hw_id = HWID_TL_WA7510N_V1,
282 .hw_rev = 1,
283 .layout_id = "4M",
284 }, {
285 .id = "TL-WA801NDv1",
286 .hw_id = HWID_TL_WA801ND_V1,
287 .hw_rev = 1,
288 .layout_id = "4M",
289 }, {
290 .id = "TL-WA830REv1",
291 .hw_id = HWID_TL_WA830RE_V1,
292 .hw_rev = 1,
293 .layout_id = "4M",
294 }, {
295 .id = "TL-WA830REv2",
296 .hw_id = HWID_TL_WA830RE_V2,
297 .hw_rev = 1,
298 .layout_id = "4M",
299 }, {
300 .id = "TL-WA801NDv2",
301 .hw_id = HWID_TL_WA801ND_V2,
302 .hw_rev = 1,
303 .layout_id = "4Mlzma",
304 },{
305 .id = "TL-WA801NDv3",
306 .hw_id = HWID_TL_WA801ND_V3,
307 .hw_rev = 1,
308 .layout_id = "4Mlzma",
309 }, {
310 .id = "TL-WA901NDv1",
311 .hw_id = HWID_TL_WA901ND_V1,
312 .hw_rev = 1,
313 .layout_id = "4M",
314 }, {
315 .id = "TL-WA901NDv2",
316 .hw_id = HWID_TL_WA901ND_V2,
317 .hw_rev = 1,
318 .layout_id = "4M",
319 }, {
320 .id = "TL-WA901NDv4",
321 .hw_id = HWID_TL_WA901ND_V4,
322 .hw_rev = 1,
323 .layout_id = "4Mlzma",
324 }, {
325 .id = "TL-WDR4300v1",
326 .hw_id = HWID_TL_WDR4300_V1_IL,
327 .hw_rev = 1,
328 .layout_id = "8Mlzma",
329 }, {
330 .id = "TL-WDR4900v1",
331 .hw_id = HWID_TL_WDR4900_V1,
332 .hw_rev = 1,
333 .layout_id = "16Mppc",
334 }, {
335 .id = "TL-WR741NDv1",
336 .hw_id = HWID_TL_WR741ND_V1,
337 .hw_rev = 1,
338 .layout_id = "4M",
339 }, {
340 .id = "TL-WR741NDv4",
341 .hw_id = HWID_TL_WR741ND_V4,
342 .hw_rev = 1,
343 .layout_id = "4Mlzma",
344 }, {
345 .id = "TL-WR740Nv1",
346 .hw_id = HWID_TL_WR740N_V1,
347 .hw_rev = 1,
348 .layout_id = "4M",
349 }, {
350 .id = "TL-WR740Nv3",
351 .hw_id = HWID_TL_WR740N_V3,
352 .hw_rev = 1,
353 .layout_id = "4M",
354 }, {
355 .id = "TL-WR743NDv1",
356 .hw_id = HWID_TL_WR743ND_V1,
357 .hw_rev = 1,
358 .layout_id = "4M",
359 }, {
360 .id = "TL-WR743NDv2",
361 .hw_id = HWID_TL_WR743ND_V2,
362 .hw_rev = 1,
363 .layout_id = "4Mlzma",
364 }, {
365 .id = "TL-WR841Nv1.5",
366 .hw_id = HWID_TL_WR841N_V1_5,
367 .hw_rev = 2,
368 .layout_id = "4M",
369 }, {
370 .id = "TL-WR841NDv3",
371 .hw_id = HWID_TL_WR841ND_V3,
372 .hw_rev = 3,
373 .layout_id = "4M",
374 }, {
375 .id = "TL-WR841NDv5",
376 .hw_id = HWID_TL_WR841ND_V5,
377 .hw_rev = 1,
378 .layout_id = "4M",
379 }, {
380 .id = "TL-WR841NDv7",
381 .hw_id = HWID_TL_WR841ND_V7,
382 .hw_rev = 1,
383 .layout_id = "4M",
384 }, {
385 .id = "TL-WR941NDv2",
386 .hw_id = HWID_TL_WR941ND_V2,
387 .hw_rev = 2,
388 .layout_id = "4M",
389 }, {
390 .id = "TL-WR941NDv4",
391 .hw_id = HWID_TL_WR941ND_V4,
392 .hw_rev = 1,
393 .layout_id = "4M",
394 }, {
395 .id = "TL-WR1041Nv2",
396 .hw_id = HWID_TL_WR1041N_V2,
397 .hw_rev = 1,
398 .layout_id = "4Mlzma",
399 }, {
400 .id = "TL-WR1043NDv1",
401 .hw_id = HWID_TL_WR1043ND_V1,
402 .hw_rev = 1,
403 .layout_id = "8M",
404 }, {
405 .id = "TL-WR1043NDv2",
406 .hw_id = HWID_TL_WR1043ND_V2,
407 .hw_rev = 1,
408 .layout_id = "8Mlzma",
409 }, {
410 .id = "TL-WR2543Nv1",
411 .hw_id = HWID_TL_WR2543N_V1,
412 .hw_rev = 1,
413 .layout_id = "8Mlzma",
414 }, {
415 .id = "TL-WR703Nv1",
416 .hw_id = HWID_TL_WR703N_V1,
417 .hw_rev = 1,
418 .layout_id = "4Mlzma",
419 }, {
420 .id = "TL-WR720Nv3",
421 .hw_id = HWID_TL_WR720N_V3,
422 .hw_rev = 1,
423 .layout_id = "4Mlzma",
424 }, {
425 .id = "TL-WR720Nv4",
426 .hw_id = HWID_TL_WR720N_V4,
427 .hw_rev = 1,
428 .layout_id = "4Mlzma",
429 }, {
430 .id = "GL-INETv1",
431 .hw_id = HWID_GL_INET_V1,
432 .hw_rev = 1,
433 .layout_id = "8Mlzma",
434 }, {
435 .id = "GS-OOLITEv1",
436 .hw_id = HWID_GS_OOLITE_V1,
437 .hw_rev = 1,
438 .layout_id = "16Mlzma",
439 }, {
440 .id = "OMY-X1",
441 .hw_id = HWID_OMY_X1,
442 .hw_rev = 1,
443 .layout_id = "8Mlzma",
444 }, {
445 .id = "ONION-OMEGA",
446 .hw_id = HWID_ONION_OMEGA,
447 .hw_rev = 1,
448 .layout_id = "16Mlzma",
449 }, {
450 .id = "ANTMINER-S1",
451 .hw_id = HWID_ANTMINER_S1,
452 .hw_rev = 1,
453 .layout_id = "8Mlzma",
454 }, {
455 .id = "ANTMINER-S3",
456 .hw_id = HWID_ANTMINER_S3,
457 .hw_rev = 1,
458 .layout_id = "8Mlzma",
459 }, {
460 /* terminating entry */
461 }
462 };
463
464 /*
465 * Message macros
466 */
467 #define ERR(fmt, ...) do { \
468 fflush(0); \
469 fprintf(stderr, "[%s] *** error: " fmt "\n", \
470 progname, ## __VA_ARGS__ ); \
471 } while (0)
472
473 #define ERRS(fmt, ...) do { \
474 int save = errno; \
475 fflush(0); \
476 fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
477 progname, ## __VA_ARGS__, strerror(save)); \
478 } while (0)
479
480 #define DBG(fmt, ...) do { \
481 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
482 } while (0)
483
484 static struct board_info *find_board(char *id)
485 {
486 struct board_info *ret;
487 struct board_info *board;
488
489 ret = NULL;
490 for (board = boards; board->id != NULL; board++){
491 if (strcasecmp(id, board->id) == 0) {
492 ret = board;
493 break;
494 }
495 };
496
497 return ret;
498 }
499
500 static struct board_info *find_board_by_hwid(uint32_t hw_id)
501 {
502 struct board_info *board;
503
504 for (board = boards; board->id != NULL; board++) {
505 if (hw_id == board->hw_id)
506 return board;
507 };
508
509 return NULL;
510 }
511
512 static struct flash_layout *find_layout(char *id)
513 {
514 struct flash_layout *ret;
515 struct flash_layout *l;
516
517 ret = NULL;
518 for (l = layouts; l->id != NULL; l++){
519 if (strcasecmp(id, l->id) == 0) {
520 ret = l;
521 break;
522 }
523 };
524
525 return ret;
526 }
527
528 static void usage(int status)
529 {
530 FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
531 struct board_info *board;
532
533 fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
534 fprintf(stream,
535 "\n"
536 "Options:\n"
537 " -B <board> create image for the board specified with <board>\n"
538 " -c use combined kernel image\n"
539 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
540 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
541 " -H <hwid> use hardware id specified with <hwid>\n"
542 " -W <hwrev> use hardware revision specified with <hwrev>\n"
543 " -F <id> use flash layout specified with <id>\n"
544 " -k <file> read kernel image from the file <file>\n"
545 " -r <file> read rootfs image from the file <file>\n"
546 " -a <align> align the rootfs start on an <align> bytes boundary\n"
547 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
548 " -o <file> write output to the file <file>\n"
549 " -s strip padding from the end of the image\n"
550 " -S ignore firmware size limit (only for combined images)\n"
551 " -j add jffs2 end-of-filesystem markers\n"
552 " -N <vendor> set image vendor to <vendor>\n"
553 " -V <version> set image version to <version>\n"
554 " -v <version> set firmware version to <version>\n"
555 " -m <version> set header version to <version>\n"
556 " -i <file> inspect given firmware file <file>\n"
557 " -x extract kernel and rootfs while inspecting (requires -i)\n"
558 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
559 " -h show this screen\n"
560 );
561
562 exit(status);
563 }
564
565 static int get_md5(char *data, int size, char *md5)
566 {
567 MD5_CTX ctx;
568
569 MD5_Init(&ctx);
570 MD5_Update(&ctx, data, size);
571 MD5_Final(md5, &ctx);
572 }
573
574 static int get_file_stat(struct file_info *fdata)
575 {
576 struct stat st;
577 int res;
578
579 if (fdata->file_name == NULL)
580 return 0;
581
582 res = stat(fdata->file_name, &st);
583 if (res){
584 ERRS("stat failed on %s", fdata->file_name);
585 return res;
586 }
587
588 fdata->file_size = st.st_size;
589 return 0;
590 }
591
592 static int read_to_buf(struct file_info *fdata, char *buf)
593 {
594 FILE *f;
595 int ret = EXIT_FAILURE;
596
597 f = fopen(fdata->file_name, "r");
598 if (f == NULL) {
599 ERRS("could not open \"%s\" for reading", fdata->file_name);
600 goto out;
601 }
602
603 errno = 0;
604 fread(buf, fdata->file_size, 1, f);
605 if (errno != 0) {
606 ERRS("unable to read from file \"%s\"", fdata->file_name);
607 goto out_close;
608 }
609
610 ret = EXIT_SUCCESS;
611
612 out_close:
613 fclose(f);
614 out:
615 return ret;
616 }
617
618 static int check_options(void)
619 {
620 int ret;
621 int exceed_bytes;
622
623 if (inspect_info.file_name) {
624 ret = get_file_stat(&inspect_info);
625 if (ret)
626 return ret;
627
628 return 0;
629 } else if (extract) {
630 ERR("no firmware for inspection specified");
631 return -1;
632 }
633
634 if (board_id == NULL && opt_hw_id == NULL) {
635 ERR("either board or hardware id must be specified");
636 return -1;
637 }
638
639 if (board_id) {
640 board = find_board(board_id);
641 if (board == NULL) {
642 ERR("unknown/unsupported board id \"%s\"", board_id);
643 return -1;
644 }
645 if (layout_id == NULL)
646 layout_id = board->layout_id;
647
648 hw_id = board->hw_id;
649 hw_rev = board->hw_rev;
650 } else {
651 if (layout_id == NULL) {
652 ERR("flash layout is not specified");
653 return -1;
654 }
655 hw_id = strtoul(opt_hw_id, NULL, 0);
656
657 if (opt_hw_rev)
658 hw_rev = strtoul(opt_hw_rev, NULL, 0);
659 else
660 hw_rev = 1;
661 }
662
663 layout = find_layout(layout_id);
664 if (layout == NULL) {
665 ERR("unknown flash layout \"%s\"", layout_id);
666 return -1;
667 }
668
669 if (!kernel_la)
670 kernel_la = layout->kernel_la;
671 if (!kernel_ep)
672 kernel_ep = layout->kernel_ep;
673 if (!rootfs_ofs)
674 rootfs_ofs = layout->rootfs_ofs;
675
676 if (reserved_space > layout->fw_max_len) {
677 ERR("reserved space is not valid");
678 return -1;
679 }
680
681 fw_max_len = layout->fw_max_len - reserved_space;
682
683 if (kernel_info.file_name == NULL) {
684 ERR("no kernel image specified");
685 return -1;
686 }
687
688 ret = get_file_stat(&kernel_info);
689 if (ret)
690 return ret;
691
692 kernel_len = kernel_info.file_size;
693
694 if (combined) {
695 exceed_bytes = kernel_info.file_size - (fw_max_len - sizeof(struct fw_header));
696 if (exceed_bytes > 0) {
697 if (!ignore_size) {
698 ERR("kernel image is too big by %i bytes", exceed_bytes);
699 return -1;
700 }
701 layout->fw_max_len = sizeof(struct fw_header) +
702 kernel_info.file_size +
703 reserved_space;
704 }
705 } else {
706 if (rootfs_info.file_name == NULL) {
707 ERR("no rootfs image specified");
708 return -1;
709 }
710
711 ret = get_file_stat(&rootfs_info);
712 if (ret)
713 return ret;
714
715 if (rootfs_align) {
716 kernel_len += sizeof(struct fw_header);
717 kernel_len = ALIGN(kernel_len, rootfs_align);
718 kernel_len -= sizeof(struct fw_header);
719
720 DBG("kernel length aligned to %u", kernel_len);
721
722 exceed_bytes = kernel_len + rootfs_info.file_size - (fw_max_len - sizeof(struct fw_header));
723 if (exceed_bytes > 0) {
724 ERR("images are too big by %i bytes", exceed_bytes);
725 return -1;
726 }
727 } else {
728 exceed_bytes = kernel_info.file_size - (rootfs_ofs - sizeof(struct fw_header));
729 if (exceed_bytes > 0) {
730 ERR("kernel image is too big by %i bytes", exceed_bytes);
731 return -1;
732 }
733
734 exceed_bytes = rootfs_info.file_size - (fw_max_len - rootfs_ofs);
735 if (exceed_bytes > 0) {
736 ERR("rootfs image is too big by %i bytes", exceed_bytes);
737 return -1;
738 }
739 }
740 }
741
742 if (ofname == NULL) {
743 ERR("no output file specified");
744 return -1;
745 }
746
747 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
748 if (ret != 3) {
749 ERR("invalid firmware version '%s'", fw_ver);
750 return -1;
751 }
752
753 if (opt_hdr_ver == 1) {
754 hdr_ver = HEADER_VERSION_V1;
755 } else if (opt_hdr_ver == 2) {
756 hdr_ver = HEADER_VERSION_V2;
757 } else {
758 ERR("invalid header version '%u'", opt_hdr_ver);
759 return -1;
760 }
761
762 return 0;
763 }
764
765 static void fill_header(char *buf, int len)
766 {
767 struct fw_header *hdr = (struct fw_header *)buf;
768
769 memset(hdr, 0, sizeof(struct fw_header));
770
771 hdr->version = htonl(hdr_ver);
772 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
773 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
774 hdr->hw_id = htonl(hw_id);
775 hdr->hw_rev = htonl(hw_rev);
776
777 if (boot_info.file_size == 0)
778 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
779 else
780 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
781
782 hdr->kernel_la = htonl(kernel_la);
783 hdr->kernel_ep = htonl(kernel_ep);
784 hdr->fw_length = htonl(layout->fw_max_len);
785 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
786 hdr->kernel_len = htonl(kernel_len);
787 if (!combined) {
788 hdr->rootfs_ofs = htonl(rootfs_ofs);
789 hdr->rootfs_len = htonl(rootfs_info.file_size);
790 }
791
792 hdr->ver_hi = htons(fw_ver_hi);
793 hdr->ver_mid = htons(fw_ver_mid);
794 hdr->ver_lo = htons(fw_ver_lo);
795
796 get_md5(buf, len, hdr->md5sum1);
797 }
798
799 static int pad_jffs2(char *buf, int currlen)
800 {
801 int len;
802 uint32_t pad_mask;
803
804 len = currlen;
805 pad_mask = (64 * 1024);
806 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
807 uint32_t mask;
808 int i;
809
810 for (i = 10; i < 32; i++) {
811 mask = 1 << i;
812 if (pad_mask & mask)
813 break;
814 }
815
816 len = ALIGN(len, mask);
817
818 for (i = 10; i < 32; i++) {
819 mask = 1 << i;
820 if ((len & (mask - 1)) == 0)
821 pad_mask &= ~mask;
822 }
823
824 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
825 buf[len + i] = jffs2_eof_mark[i];
826
827 len += sizeof(jffs2_eof_mark);
828 }
829
830 return len;
831 }
832
833 static int write_fw(char *data, int len)
834 {
835 FILE *f;
836 int ret = EXIT_FAILURE;
837
838 f = fopen(ofname, "w");
839 if (f == NULL) {
840 ERRS("could not open \"%s\" for writing", ofname);
841 goto out;
842 }
843
844 errno = 0;
845 fwrite(data, len, 1, f);
846 if (errno) {
847 ERRS("unable to write output file");
848 goto out_flush;
849 }
850
851 DBG("firmware file \"%s\" completed", ofname);
852
853 ret = EXIT_SUCCESS;
854
855 out_flush:
856 fflush(f);
857 fclose(f);
858 if (ret != EXIT_SUCCESS) {
859 unlink(ofname);
860 }
861 out:
862 return ret;
863 }
864
865 static int build_fw(void)
866 {
867 int buflen;
868 char *buf;
869 char *p;
870 int ret = EXIT_FAILURE;
871 int writelen = 0;
872
873 buflen = layout->fw_max_len;
874
875 buf = malloc(buflen);
876 if (!buf) {
877 ERR("no memory for buffer\n");
878 goto out;
879 }
880
881 memset(buf, 0xff, buflen);
882 p = buf + sizeof(struct fw_header);
883 ret = read_to_buf(&kernel_info, p);
884 if (ret)
885 goto out_free_buf;
886
887 writelen = sizeof(struct fw_header) + kernel_len;
888
889 if (!combined) {
890 if (rootfs_align)
891 p = buf + writelen;
892 else
893 p = buf + rootfs_ofs;
894
895 ret = read_to_buf(&rootfs_info, p);
896 if (ret)
897 goto out_free_buf;
898
899 if (rootfs_align)
900 writelen += rootfs_info.file_size;
901 else
902 writelen = rootfs_ofs + rootfs_info.file_size;
903
904 if (add_jffs2_eof)
905 writelen = pad_jffs2(buf, writelen);
906 }
907
908 if (!strip_padding)
909 writelen = buflen;
910
911 fill_header(buf, writelen);
912 ret = write_fw(buf, writelen);
913 if (ret)
914 goto out_free_buf;
915
916 ret = EXIT_SUCCESS;
917
918 out_free_buf:
919 free(buf);
920 out:
921 return ret;
922 }
923
924 /* Helper functions to inspect_fw() representing different output formats */
925 static inline void inspect_fw_pstr(char *label, char *str)
926 {
927 printf("%-23s: %s\n", label, str);
928 }
929
930 static inline void inspect_fw_phex(char *label, uint32_t val)
931 {
932 printf("%-23s: 0x%08x\n", label, val);
933 }
934
935 static inline void inspect_fw_phexpost(char *label,
936 uint32_t val, char *post)
937 {
938 printf("%-23s: 0x%08x (%s)\n", label, val, post);
939 }
940
941 static inline void inspect_fw_phexdef(char *label,
942 uint32_t val, uint32_t defval)
943 {
944 printf("%-23s: 0x%08x ", label, val);
945
946 if (val == defval)
947 printf("(== OpenWrt default)\n");
948 else
949 printf("(OpenWrt default: 0x%08x)\n", defval);
950 }
951
952 static inline void inspect_fw_phexexp(char *label,
953 uint32_t val, uint32_t expval)
954 {
955 printf("%-23s: 0x%08x ", label, val);
956
957 if (val == expval)
958 printf("(ok)\n");
959 else
960 printf("(expected: 0x%08x)\n", expval);
961 }
962
963 static inline void inspect_fw_phexdec(char *label, uint32_t val)
964 {
965 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
966 }
967
968 static inline void inspect_fw_phexdecdef(char *label,
969 uint32_t val, uint32_t defval)
970 {
971 printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
972
973 if (val == defval)
974 printf("(== OpenWrt default)\n");
975 else
976 printf("(OpenWrt default: 0x%08x)\n", defval);
977 }
978
979 static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
980 {
981 int i;
982
983 printf("%-23s:", label);
984 for (i=0; i<MD5SUM_LEN; i++)
985 printf(" %02x", val[i]);
986 printf(" %s\n", text);
987 }
988
989 static int inspect_fw(void)
990 {
991 char *buf;
992 struct fw_header *hdr;
993 uint8_t md5sum[MD5SUM_LEN];
994 struct board_info *board;
995 int ret = EXIT_FAILURE;
996
997 buf = malloc(inspect_info.file_size);
998 if (!buf) {
999 ERR("no memory for buffer!\n");
1000 goto out;
1001 }
1002
1003 ret = read_to_buf(&inspect_info, buf);
1004 if (ret)
1005 goto out_free_buf;
1006 hdr = (struct fw_header *)buf;
1007
1008 inspect_fw_pstr("File name", inspect_info.file_name);
1009 inspect_fw_phexdec("File size", inspect_info.file_size);
1010
1011 if ((ntohl(hdr->version) != HEADER_VERSION_V1) &&
1012 (ntohl(hdr->version) != HEADER_VERSION_V2)) {
1013 ERR("file does not seem to have V1/V2 header!\n");
1014 goto out_free_buf;
1015 }
1016
1017 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
1018
1019 if (ntohl(hdr->unk1) != 0)
1020 inspect_fw_phexdec("Unknown value 1", hdr->unk1);
1021
1022 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
1023 if (ntohl(hdr->boot_len) == 0)
1024 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
1025 else
1026 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
1027 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
1028
1029 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
1030 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
1031 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
1032 } else {
1033 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
1034 }
1035 if (ntohl(hdr->unk2) != 0)
1036 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
1037 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
1038 "(purpose yet unknown, unchecked here)");
1039 if (ntohl(hdr->unk3) != 0)
1040 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
1041
1042 printf("\n");
1043
1044 inspect_fw_pstr("Vendor name", hdr->vendor_name);
1045 inspect_fw_pstr("Firmware version", hdr->fw_version);
1046 board = find_board_by_hwid(ntohl(hdr->hw_id));
1047 if (board) {
1048 layout = find_layout(board->layout_id);
1049 inspect_fw_phexpost("Hardware ID",
1050 ntohl(hdr->hw_id), board->id);
1051 inspect_fw_phexexp("Hardware Revision",
1052 ntohl(hdr->hw_rev), board->hw_rev);
1053 } else {
1054 inspect_fw_phexpost("Hardware ID",
1055 ntohl(hdr->hw_id), "unknown");
1056 inspect_fw_phex("Hardware Revision",
1057 ntohl(hdr->hw_rev));
1058 }
1059
1060 printf("\n");
1061
1062 inspect_fw_phexdec("Kernel data offset",
1063 ntohl(hdr->kernel_ofs));
1064 inspect_fw_phexdec("Kernel data length",
1065 ntohl(hdr->kernel_len));
1066 if (board) {
1067 inspect_fw_phexdef("Kernel load address",
1068 ntohl(hdr->kernel_la),
1069 layout ? layout->kernel_la : 0xffffffff);
1070 inspect_fw_phexdef("Kernel entry point",
1071 ntohl(hdr->kernel_ep),
1072 layout ? layout->kernel_ep : 0xffffffff);
1073 inspect_fw_phexdecdef("Rootfs data offset",
1074 ntohl(hdr->rootfs_ofs),
1075 layout ? layout->rootfs_ofs : 0xffffffff);
1076 } else {
1077 inspect_fw_phex("Kernel load address",
1078 ntohl(hdr->kernel_la));
1079 inspect_fw_phex("Kernel entry point",
1080 ntohl(hdr->kernel_ep));
1081 inspect_fw_phexdec("Rootfs data offset",
1082 ntohl(hdr->rootfs_ofs));
1083 }
1084 inspect_fw_phexdec("Rootfs data length",
1085 ntohl(hdr->rootfs_len));
1086 inspect_fw_phexdec("Boot loader data offset",
1087 ntohl(hdr->boot_ofs));
1088 inspect_fw_phexdec("Boot loader data length",
1089 ntohl(hdr->boot_len));
1090 inspect_fw_phexdec("Total firmware length",
1091 ntohl(hdr->fw_length));
1092
1093 if (extract) {
1094 FILE *fp;
1095 char *filename;
1096
1097 printf("\n");
1098
1099 filename = malloc(strlen(inspect_info.file_name) + 8);
1100 sprintf(filename, "%s-kernel", inspect_info.file_name);
1101 printf("Extracting kernel to \"%s\"...\n", filename);
1102 fp = fopen(filename, "w");
1103 if (fp) {
1104 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
1105 ntohl(hdr->kernel_len), 1, fp)) {
1106 ERR("error in fwrite(): %s", strerror(errno));
1107 }
1108 fclose(fp);
1109 } else {
1110 ERR("error in fopen(): %s", strerror(errno));
1111 }
1112 free(filename);
1113
1114 filename = malloc(strlen(inspect_info.file_name) + 8);
1115 sprintf(filename, "%s-rootfs", inspect_info.file_name);
1116 printf("Extracting rootfs to \"%s\"...\n", filename);
1117 fp = fopen(filename, "w");
1118 if (fp) {
1119 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
1120 ntohl(hdr->rootfs_len), 1, fp)) {
1121 ERR("error in fwrite(): %s", strerror(errno));
1122 }
1123 fclose(fp);
1124 } else {
1125 ERR("error in fopen(): %s", strerror(errno));
1126 }
1127 free(filename);
1128 }
1129
1130 out_free_buf:
1131 free(buf);
1132 out:
1133 return ret;
1134 }
1135
1136 int main(int argc, char *argv[])
1137 {
1138 int ret = EXIT_FAILURE;
1139 int err;
1140
1141 FILE *outfile;
1142
1143 progname = basename(argv[0]);
1144
1145 while ( 1 ) {
1146 int c;
1147
1148 c = getopt(argc, argv, "a:B:H:E:F:L:m:V:N:W:ci:k:r:R:o:xX:hsSjv:");
1149 if (c == -1)
1150 break;
1151
1152 switch (c) {
1153 case 'a':
1154 sscanf(optarg, "0x%x", &rootfs_align);
1155 break;
1156 case 'B':
1157 board_id = optarg;
1158 break;
1159 case 'H':
1160 opt_hw_id = optarg;
1161 break;
1162 case 'E':
1163 sscanf(optarg, "0x%x", &kernel_ep);
1164 break;
1165 case 'F':
1166 layout_id = optarg;
1167 break;
1168 case 'W':
1169 opt_hw_rev = optarg;
1170 break;
1171 case 'L':
1172 sscanf(optarg, "0x%x", &kernel_la);
1173 break;
1174 case 'm':
1175 sscanf(optarg, "%u", &opt_hdr_ver);
1176 break;
1177 case 'V':
1178 version = optarg;
1179 break;
1180 case 'v':
1181 fw_ver = optarg;
1182 break;
1183 case 'N':
1184 vendor = optarg;
1185 break;
1186 case 'c':
1187 combined++;
1188 break;
1189 case 'k':
1190 kernel_info.file_name = optarg;
1191 break;
1192 case 'r':
1193 rootfs_info.file_name = optarg;
1194 break;
1195 case 'R':
1196 sscanf(optarg, "0x%x", &rootfs_ofs);
1197 break;
1198 case 'o':
1199 ofname = optarg;
1200 break;
1201 case 's':
1202 strip_padding = 1;
1203 break;
1204 case 'S':
1205 ignore_size = 1;
1206 break;
1207 case 'i':
1208 inspect_info.file_name = optarg;
1209 break;
1210 case 'j':
1211 add_jffs2_eof = 1;
1212 break;
1213 case 'x':
1214 extract = 1;
1215 break;
1216 case 'h':
1217 usage(EXIT_SUCCESS);
1218 break;
1219 case 'X':
1220 sscanf(optarg, "0x%x", &reserved_space);
1221 break;
1222 default:
1223 usage(EXIT_FAILURE);
1224 break;
1225 }
1226 }
1227
1228 ret = check_options();
1229 if (ret)
1230 goto out;
1231
1232 if (!inspect_info.file_name)
1233 ret = build_fw();
1234 else
1235 ret = inspect_fw();
1236
1237 out:
1238 return ret;
1239 }
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