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[openwrt/staging/blogic.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 <stdbool.h>
23 #include <endian.h>
24 #include <errno.h>
25 #include <sys/stat.h>
26
27 #include <arpa/inet.h>
28 #include <netinet/in.h>
29
30 #include "md5.h"
31
32 #define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
33 #define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))
34
35 #define HEADER_VERSION_V1 0x01000000
36 #define HEADER_VERSION_V2 0x02000000
37
38 #define MD5SUM_LEN 16
39
40 struct file_info {
41 char *file_name; /* name of the file */
42 uint32_t file_size; /* length of the file */
43 };
44
45 struct fw_header {
46 uint32_t version; /* header version */
47 char vendor_name[24];
48 char fw_version[36];
49 uint32_t hw_id; /* hardware id */
50 uint32_t hw_rev; /* hardware revision */
51 uint32_t region_code; /* region code */
52 uint8_t md5sum1[MD5SUM_LEN];
53 uint32_t unk2;
54 uint8_t md5sum2[MD5SUM_LEN];
55 uint32_t unk3;
56 uint32_t kernel_la; /* kernel load address */
57 uint32_t kernel_ep; /* kernel entry point */
58 uint32_t fw_length; /* total length of the firmware */
59 uint32_t kernel_ofs; /* kernel data offset */
60 uint32_t kernel_len; /* kernel data length */
61 uint32_t rootfs_ofs; /* rootfs data offset */
62 uint32_t rootfs_len; /* rootfs data length */
63 uint32_t boot_ofs; /* bootloader data offset */
64 uint32_t boot_len; /* bootloader data length */
65 uint16_t ver_hi;
66 uint16_t ver_mid;
67 uint16_t ver_lo;
68 uint8_t pad[130];
69 char region_str1[32];
70 char region_str2[32];
71 uint8_t pad2[160];
72 } __attribute__ ((packed));
73
74 struct flash_layout {
75 char *id;
76 uint32_t fw_max_len;
77 uint32_t kernel_la;
78 uint32_t kernel_ep;
79 uint32_t rootfs_ofs;
80 };
81
82 struct fw_region {
83 char name[4];
84 uint32_t code;
85 };
86
87
88 /*
89 * Globals
90 */
91 static char *ofname;
92 static char *progname;
93 static char *vendor = "TP-LINK Technologies";
94 static char *version = "ver. 1.0";
95 static char *fw_ver = "0.0.0";
96 static uint32_t hdr_ver = HEADER_VERSION_V1;
97
98 static char *layout_id;
99 static struct flash_layout *layout;
100 static char *opt_hw_id;
101 static uint32_t hw_id;
102 static char *opt_hw_rev;
103 static uint32_t hw_rev;
104 static uint32_t opt_hdr_ver = 1;
105 static char *country;
106 static const struct fw_region *region;
107 static int fw_ver_lo;
108 static int fw_ver_mid;
109 static int fw_ver_hi;
110 static struct file_info kernel_info;
111 static uint32_t kernel_la = 0;
112 static uint32_t kernel_ep = 0;
113 static uint32_t kernel_len = 0;
114 static struct file_info rootfs_info;
115 static uint32_t rootfs_ofs = 0;
116 static uint32_t rootfs_align;
117 static struct file_info boot_info;
118 static int combined;
119 static int strip_padding;
120 static int ignore_size;
121 static int add_jffs2_eof;
122 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
123 static uint32_t fw_max_len;
124 static uint32_t reserved_space;
125
126 static struct file_info inspect_info;
127 static int extract = 0;
128 static bool endian_swap = false;
129
130 static const char md5salt_normal[MD5SUM_LEN] = {
131 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
132 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
133 };
134
135 static const char md5salt_boot[MD5SUM_LEN] = {
136 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
137 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
138 };
139
140 static struct flash_layout layouts[] = {
141 {
142 .id = "4M",
143 .fw_max_len = 0x3c0000,
144 .kernel_la = 0x80060000,
145 .kernel_ep = 0x80060000,
146 .rootfs_ofs = 0x140000,
147 }, {
148 .id = "4Mlzma",
149 .fw_max_len = 0x3c0000,
150 .kernel_la = 0x80060000,
151 .kernel_ep = 0x80060000,
152 .rootfs_ofs = 0x100000,
153 }, {
154 .id = "8M",
155 .fw_max_len = 0x7c0000,
156 .kernel_la = 0x80060000,
157 .kernel_ep = 0x80060000,
158 .rootfs_ofs = 0x140000,
159 }, {
160 .id = "8Mlzma",
161 .fw_max_len = 0x7c0000,
162 .kernel_la = 0x80060000,
163 .kernel_ep = 0x80060000,
164 .rootfs_ofs = 0x100000,
165 }, {
166 .id = "16M",
167 .fw_max_len = 0xf80000,
168 .kernel_la = 0x80060000,
169 .kernel_ep = 0x80060000,
170 .rootfs_ofs = 0x140000,
171 }, {
172 .id = "16Mlzma",
173 .fw_max_len = 0xf80000,
174 .kernel_la = 0x80060000,
175 .kernel_ep = 0x80060000,
176 .rootfs_ofs = 0x100000,
177 }, {
178 .id = "16Mppc",
179 .fw_max_len = 0xf80000,
180 .kernel_la = 0x00000000 ,
181 .kernel_ep = 0xc0000000,
182 .rootfs_ofs = 0x2a0000,
183 }, {
184 /*
185 Some devices (e.g. TL-WR1043 v4) use a mktplinkfw kernel image
186 embedded in a tplink-safeloader image as os-image partition.
187
188 We use a 1.5MB partition for the compressed kernel, which should
189 be sufficient, but not too wasteful (the flash of the TL-WR1043 v4
190 has 16MB in total).
191 */
192 .id = "16Msafeloader",
193 .fw_max_len = 0x180000,
194 .kernel_la = 0x80060000,
195 .kernel_ep = 0x80060000,
196 .rootfs_ofs = 0,
197 }, {
198 /* terminating entry */
199 }
200 };
201
202 static const struct fw_region regions[] = {
203 /* Default region (universal) uses code 0 as well */
204 {"US", 1},
205 {"EU", 0},
206 };
207
208 /*
209 * Message macros
210 */
211 #define ERR(fmt, ...) do { \
212 fflush(0); \
213 fprintf(stderr, "[%s] *** error: " fmt "\n", \
214 progname, ## __VA_ARGS__ ); \
215 } while (0)
216
217 #define ERRS(fmt, ...) do { \
218 int save = errno; \
219 fflush(0); \
220 fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
221 progname, ## __VA_ARGS__, strerror(save)); \
222 } while (0)
223
224 #define DBG(fmt, ...) do { \
225 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
226 } while (0)
227
228 static struct flash_layout *find_layout(const char *id)
229 {
230 struct flash_layout *ret;
231 struct flash_layout *l;
232
233 ret = NULL;
234 for (l = layouts; l->id != NULL; l++){
235 if (strcasecmp(id, l->id) == 0) {
236 ret = l;
237 break;
238 }
239 };
240
241 return ret;
242 }
243
244 static const struct fw_region * find_region(const char *country) {
245 size_t i;
246
247 for (i = 0; i < ARRAY_SIZE(regions); i++) {
248 if (strcasecmp(regions[i].name, country) == 0)
249 return &regions[i];
250 }
251
252 return NULL;
253 }
254
255 static void usage(int status)
256 {
257 fprintf(stderr, "Usage: %s [OPTIONS...]\n", progname);
258 fprintf(stderr,
259 "\n"
260 "Options:\n"
261 " -c use combined kernel image\n"
262 " -e swap endianness in kernel load address and entry point\n"
263 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
264 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
265 " -H <hwid> use hardware id specified with <hwid>\n"
266 " -W <hwrev> use hardware revision specified with <hwrev>\n"
267 " -C <country> set region code to <country>\n"
268 " -F <id> use flash layout specified with <id>\n"
269 " -k <file> read kernel image from the file <file>\n"
270 " -r <file> read rootfs image from the file <file>\n"
271 " -a <align> align the rootfs start on an <align> bytes boundary\n"
272 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
273 " -o <file> write output to the file <file>\n"
274 " -s strip padding from the end of the image\n"
275 " -S ignore firmware size limit (only for combined images)\n"
276 " -j add jffs2 end-of-filesystem markers\n"
277 " -N <vendor> set image vendor to <vendor>\n"
278 " -V <version> set image version to <version>\n"
279 " -v <version> set firmware version to <version>\n"
280 " -m <version> set header version to <version>\n"
281 " -i <file> inspect given firmware file <file>\n"
282 " -x extract kernel and rootfs while inspecting (requires -i)\n"
283 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
284 " -h show this screen\n"
285 );
286
287 exit(status);
288 }
289
290 static void get_md5(const char *data, int size, uint8_t *md5)
291 {
292 MD5_CTX ctx;
293
294 MD5_Init(&ctx);
295 MD5_Update(&ctx, data, size);
296 MD5_Final(md5, &ctx);
297 }
298
299 static int get_file_stat(struct file_info *fdata)
300 {
301 struct stat st;
302 int res;
303
304 if (fdata->file_name == NULL)
305 return 0;
306
307 res = stat(fdata->file_name, &st);
308 if (res){
309 ERRS("stat failed on %s", fdata->file_name);
310 return res;
311 }
312
313 fdata->file_size = st.st_size;
314 return 0;
315 }
316
317 static int read_to_buf(const struct file_info *fdata, char *buf)
318 {
319 FILE *f;
320 int ret = EXIT_FAILURE;
321
322 f = fopen(fdata->file_name, "r");
323 if (f == NULL) {
324 ERRS("could not open \"%s\" for reading", fdata->file_name);
325 goto out;
326 }
327
328 errno = 0;
329 fread(buf, fdata->file_size, 1, f);
330 if (errno != 0) {
331 ERRS("unable to read from file \"%s\"", fdata->file_name);
332 goto out_close;
333 }
334
335 ret = EXIT_SUCCESS;
336
337 out_close:
338 fclose(f);
339 out:
340 return ret;
341 }
342
343 static int check_options(void)
344 {
345 int ret;
346 int exceed_bytes;
347
348 if (inspect_info.file_name) {
349 ret = get_file_stat(&inspect_info);
350 if (ret)
351 return ret;
352
353 return 0;
354 } else if (extract) {
355 ERR("no firmware for inspection specified");
356 return -1;
357 }
358
359 if (opt_hw_id == NULL) {
360 ERR("hardware id not specified");
361 return -1;
362 }
363 hw_id = strtoul(opt_hw_id, NULL, 0);
364
365 if (layout_id == NULL) {
366 ERR("flash layout is not specified");
367 return -1;
368 }
369
370 if (opt_hw_rev)
371 hw_rev = strtoul(opt_hw_rev, NULL, 0);
372 else
373 hw_rev = 1;
374
375 if (country) {
376 region = find_region(country);
377 if (!region) {
378 ERR("unknown region code \"%s\"", country);
379 return -1;
380 }
381 }
382
383 layout = find_layout(layout_id);
384 if (layout == NULL) {
385 ERR("unknown flash layout \"%s\"", layout_id);
386 return -1;
387 }
388
389 if (!kernel_la)
390 kernel_la = layout->kernel_la;
391 if (!kernel_ep)
392 kernel_ep = layout->kernel_ep;
393 if (!rootfs_ofs)
394 rootfs_ofs = layout->rootfs_ofs;
395
396 if (reserved_space > layout->fw_max_len) {
397 ERR("reserved space is not valid");
398 return -1;
399 }
400
401 fw_max_len = layout->fw_max_len - reserved_space;
402
403 if (kernel_info.file_name == NULL) {
404 ERR("no kernel image specified");
405 return -1;
406 }
407
408 ret = get_file_stat(&kernel_info);
409 if (ret)
410 return ret;
411
412 kernel_len = kernel_info.file_size;
413
414 if (combined) {
415 exceed_bytes = kernel_info.file_size - (fw_max_len - sizeof(struct fw_header));
416 if (exceed_bytes > 0) {
417 if (!ignore_size) {
418 ERR("kernel image is too big by %i bytes", exceed_bytes);
419 return -1;
420 }
421 layout->fw_max_len = sizeof(struct fw_header) +
422 kernel_info.file_size +
423 reserved_space;
424 }
425 } else {
426 if (rootfs_info.file_name == NULL) {
427 ERR("no rootfs image specified");
428 return -1;
429 }
430
431 ret = get_file_stat(&rootfs_info);
432 if (ret)
433 return ret;
434
435 if (rootfs_align) {
436 kernel_len += sizeof(struct fw_header);
437 kernel_len = ALIGN(kernel_len, rootfs_align);
438 kernel_len -= sizeof(struct fw_header);
439
440 DBG("kernel length aligned to %u", kernel_len);
441
442 exceed_bytes = kernel_len + rootfs_info.file_size - (fw_max_len - sizeof(struct fw_header));
443 if (exceed_bytes > 0) {
444 ERR("images are too big by %i bytes", exceed_bytes);
445 return -1;
446 }
447 } else {
448 exceed_bytes = kernel_info.file_size - (rootfs_ofs - sizeof(struct fw_header));
449 if (exceed_bytes > 0) {
450 ERR("kernel image is too big by %i bytes", exceed_bytes);
451 return -1;
452 }
453
454 exceed_bytes = rootfs_info.file_size - (fw_max_len - rootfs_ofs);
455 if (exceed_bytes > 0) {
456 ERR("rootfs image is too big by %i bytes", exceed_bytes);
457 return -1;
458 }
459 }
460 }
461
462 if (ofname == NULL) {
463 ERR("no output file specified");
464 return -1;
465 }
466
467 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
468 if (ret != 3) {
469 ERR("invalid firmware version '%s'", fw_ver);
470 return -1;
471 }
472
473 if (opt_hdr_ver == 1) {
474 hdr_ver = HEADER_VERSION_V1;
475 } else if (opt_hdr_ver == 2) {
476 hdr_ver = HEADER_VERSION_V2;
477 } else {
478 ERR("invalid header version '%u'", opt_hdr_ver);
479 return -1;
480 }
481
482 return 0;
483 }
484
485 static void fill_header(char *buf, int len)
486 {
487 struct fw_header *hdr = (struct fw_header *)buf;
488
489 memset(hdr, 0, sizeof(struct fw_header));
490
491 hdr->version = htonl(hdr_ver);
492 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
493 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
494 hdr->hw_id = htonl(hw_id);
495 hdr->hw_rev = htonl(hw_rev);
496
497 if (boot_info.file_size == 0)
498 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
499 else
500 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
501
502 hdr->kernel_la = htonl(kernel_la);
503 hdr->kernel_ep = htonl(kernel_ep);
504 hdr->fw_length = htonl(layout->fw_max_len);
505 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
506 hdr->kernel_len = htonl(kernel_len);
507 if (!combined) {
508 hdr->rootfs_ofs = htonl(rootfs_ofs);
509 hdr->rootfs_len = htonl(rootfs_info.file_size);
510 }
511
512 hdr->ver_hi = htons(fw_ver_hi);
513 hdr->ver_mid = htons(fw_ver_mid);
514 hdr->ver_lo = htons(fw_ver_lo);
515
516 if (region) {
517 hdr->region_code = htonl(region->code);
518 snprintf(
519 hdr->region_str1, sizeof(hdr->region_str1), "00000000;%02X%02X%02X%02X;",
520 region->name[0], region->name[1], region->name[2], region->name[3]
521 );
522 snprintf(
523 hdr->region_str2, sizeof(hdr->region_str2), "%02X%02X%02X%02X",
524 region->name[0], region->name[1], region->name[2], region->name[3]
525 );
526 }
527
528 if (endian_swap) {
529 hdr->kernel_la = bswap_32(hdr->kernel_la);
530 hdr->kernel_ep = bswap_32(hdr->kernel_ep);
531 }
532
533 get_md5(buf, len, hdr->md5sum1);
534 }
535
536 static int pad_jffs2(char *buf, int currlen)
537 {
538 int len;
539 uint32_t pad_mask;
540
541 len = currlen;
542 pad_mask = (64 * 1024);
543 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
544 uint32_t mask;
545 int i;
546
547 for (i = 10; i < 32; i++) {
548 mask = 1 << i;
549 if (pad_mask & mask)
550 break;
551 }
552
553 len = ALIGN(len, mask);
554
555 for (i = 10; i < 32; i++) {
556 mask = 1 << i;
557 if ((len & (mask - 1)) == 0)
558 pad_mask &= ~mask;
559 }
560
561 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
562 buf[len + i] = jffs2_eof_mark[i];
563
564 len += sizeof(jffs2_eof_mark);
565 }
566
567 return len;
568 }
569
570 static int write_fw(const char *data, int len)
571 {
572 FILE *f;
573 int ret = EXIT_FAILURE;
574
575 f = fopen(ofname, "w");
576 if (f == NULL) {
577 ERRS("could not open \"%s\" for writing", ofname);
578 goto out;
579 }
580
581 errno = 0;
582 fwrite(data, len, 1, f);
583 if (errno) {
584 ERRS("unable to write output file");
585 goto out_flush;
586 }
587
588 DBG("firmware file \"%s\" completed", ofname);
589
590 ret = EXIT_SUCCESS;
591
592 out_flush:
593 fflush(f);
594 fclose(f);
595 if (ret != EXIT_SUCCESS) {
596 unlink(ofname);
597 }
598 out:
599 return ret;
600 }
601
602 static int build_fw(void)
603 {
604 int buflen;
605 char *buf;
606 char *p;
607 int ret = EXIT_FAILURE;
608 int writelen = 0;
609
610 buflen = layout->fw_max_len;
611
612 buf = malloc(buflen);
613 if (!buf) {
614 ERR("no memory for buffer\n");
615 goto out;
616 }
617
618 memset(buf, 0xff, buflen);
619 p = buf + sizeof(struct fw_header);
620 ret = read_to_buf(&kernel_info, p);
621 if (ret)
622 goto out_free_buf;
623
624 writelen = sizeof(struct fw_header) + kernel_len;
625
626 if (!combined) {
627 if (rootfs_align)
628 p = buf + writelen;
629 else
630 p = buf + rootfs_ofs;
631
632 ret = read_to_buf(&rootfs_info, p);
633 if (ret)
634 goto out_free_buf;
635
636 if (rootfs_align)
637 writelen += rootfs_info.file_size;
638 else
639 writelen = rootfs_ofs + rootfs_info.file_size;
640
641 if (add_jffs2_eof)
642 writelen = pad_jffs2(buf, writelen);
643 }
644
645 if (!strip_padding)
646 writelen = buflen;
647
648 fill_header(buf, writelen);
649 ret = write_fw(buf, writelen);
650 if (ret)
651 goto out_free_buf;
652
653 ret = EXIT_SUCCESS;
654
655 out_free_buf:
656 free(buf);
657 out:
658 return ret;
659 }
660
661 /* Helper functions to inspect_fw() representing different output formats */
662 static inline void inspect_fw_pstr(const char *label, const char *str)
663 {
664 printf("%-23s: %s\n", label, str);
665 }
666
667 static inline void inspect_fw_phex(const char *label, uint32_t val)
668 {
669 printf("%-23s: 0x%08x\n", label, val);
670 }
671
672 static inline void inspect_fw_phexdec(const char *label, uint32_t val)
673 {
674 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
675 }
676
677 static inline void inspect_fw_pmd5sum(const char *label, const uint8_t *val, const char *text)
678 {
679 int i;
680
681 printf("%-23s:", label);
682 for (i=0; i<MD5SUM_LEN; i++)
683 printf(" %02x", val[i]);
684 printf(" %s\n", text);
685 }
686
687 static int inspect_fw(void)
688 {
689 char *buf;
690 struct fw_header *hdr;
691 uint8_t md5sum[MD5SUM_LEN];
692 int ret = EXIT_FAILURE;
693
694 buf = malloc(inspect_info.file_size);
695 if (!buf) {
696 ERR("no memory for buffer!\n");
697 goto out;
698 }
699
700 ret = read_to_buf(&inspect_info, buf);
701 if (ret)
702 goto out_free_buf;
703 hdr = (struct fw_header *)buf;
704
705 inspect_fw_pstr("File name", inspect_info.file_name);
706 inspect_fw_phexdec("File size", inspect_info.file_size);
707
708 if ((ntohl(hdr->version) != HEADER_VERSION_V1) &&
709 (ntohl(hdr->version) != HEADER_VERSION_V2)) {
710 ERR("file does not seem to have V1/V2 header!\n");
711 goto out_free_buf;
712 }
713
714 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
715
716 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
717 if (ntohl(hdr->boot_len) == 0)
718 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
719 else
720 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
721 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
722
723 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
724 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
725 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
726 } else {
727 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
728 }
729 if (ntohl(hdr->unk2) != 0)
730 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
731 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
732 "(purpose yet unknown, unchecked here)");
733 if (ntohl(hdr->unk3) != 0)
734 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
735
736 printf("\n");
737
738 inspect_fw_pstr("Vendor name", hdr->vendor_name);
739 inspect_fw_pstr("Firmware version", hdr->fw_version);
740 inspect_fw_phex("Hardware ID", ntohl(hdr->hw_id));
741 inspect_fw_phex("Hardware Revision", ntohl(hdr->hw_rev));
742 inspect_fw_phex("Region code", ntohl(hdr->region_code));
743
744 printf("\n");
745
746 inspect_fw_phexdec("Kernel data offset",
747 ntohl(hdr->kernel_ofs));
748 inspect_fw_phexdec("Kernel data length",
749 ntohl(hdr->kernel_len));
750 inspect_fw_phex("Kernel load address",
751 ntohl(hdr->kernel_la));
752 inspect_fw_phex("Kernel entry point",
753 ntohl(hdr->kernel_ep));
754 inspect_fw_phexdec("Rootfs data offset",
755 ntohl(hdr->rootfs_ofs));
756 inspect_fw_phexdec("Rootfs data length",
757 ntohl(hdr->rootfs_len));
758 inspect_fw_phexdec("Boot loader data offset",
759 ntohl(hdr->boot_ofs));
760 inspect_fw_phexdec("Boot loader data length",
761 ntohl(hdr->boot_len));
762 inspect_fw_phexdec("Total firmware length",
763 ntohl(hdr->fw_length));
764
765 if (extract) {
766 FILE *fp;
767 char *filename;
768
769 printf("\n");
770
771 filename = malloc(strlen(inspect_info.file_name) + 8);
772 sprintf(filename, "%s-kernel", inspect_info.file_name);
773 printf("Extracting kernel to \"%s\"...\n", filename);
774 fp = fopen(filename, "w");
775 if (fp) {
776 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
777 ntohl(hdr->kernel_len), 1, fp)) {
778 ERR("error in fwrite(): %s", strerror(errno));
779 }
780 fclose(fp);
781 } else {
782 ERR("error in fopen(): %s", strerror(errno));
783 }
784 free(filename);
785
786 filename = malloc(strlen(inspect_info.file_name) + 8);
787 sprintf(filename, "%s-rootfs", inspect_info.file_name);
788 printf("Extracting rootfs to \"%s\"...\n", filename);
789 fp = fopen(filename, "w");
790 if (fp) {
791 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
792 ntohl(hdr->rootfs_len), 1, fp)) {
793 ERR("error in fwrite(): %s", strerror(errno));
794 }
795 fclose(fp);
796 } else {
797 ERR("error in fopen(): %s", strerror(errno));
798 }
799 free(filename);
800 }
801
802 out_free_buf:
803 free(buf);
804 out:
805 return ret;
806 }
807
808 int main(int argc, char *argv[])
809 {
810 int ret = EXIT_FAILURE;
811
812 progname = basename(argv[0]);
813
814 while ( 1 ) {
815 int c;
816
817 c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:ehsSjv:");
818 if (c == -1)
819 break;
820
821 switch (c) {
822 case 'a':
823 sscanf(optarg, "0x%x", &rootfs_align);
824 break;
825 case 'H':
826 opt_hw_id = optarg;
827 break;
828 case 'E':
829 sscanf(optarg, "0x%x", &kernel_ep);
830 break;
831 case 'F':
832 layout_id = optarg;
833 break;
834 case 'W':
835 opt_hw_rev = optarg;
836 break;
837 case 'C':
838 country = optarg;
839 break;
840 case 'L':
841 sscanf(optarg, "0x%x", &kernel_la);
842 break;
843 case 'm':
844 sscanf(optarg, "%u", &opt_hdr_ver);
845 break;
846 case 'V':
847 version = optarg;
848 break;
849 case 'v':
850 fw_ver = optarg;
851 break;
852 case 'N':
853 vendor = optarg;
854 break;
855 case 'c':
856 combined++;
857 break;
858 case 'k':
859 kernel_info.file_name = optarg;
860 break;
861 case 'r':
862 rootfs_info.file_name = optarg;
863 break;
864 case 'R':
865 sscanf(optarg, "0x%x", &rootfs_ofs);
866 break;
867 case 'o':
868 ofname = optarg;
869 break;
870 case 's':
871 strip_padding = 1;
872 break;
873 case 'S':
874 ignore_size = 1;
875 break;
876 case 'i':
877 inspect_info.file_name = optarg;
878 break;
879 case 'j':
880 add_jffs2_eof = 1;
881 break;
882 case 'x':
883 extract = 1;
884 break;
885 case 'e':
886 endian_swap = true;
887 break;
888 case 'h':
889 usage(EXIT_SUCCESS);
890 break;
891 case 'X':
892 sscanf(optarg, "0x%x", &reserved_space);
893 break;
894 default:
895 usage(EXIT_FAILURE);
896 break;
897 }
898 }
899
900 ret = check_options();
901 if (ret)
902 goto out;
903
904 if (!inspect_info.file_name)
905 ret = build_fw();
906 else
907 ret = inspect_fw();
908
909 out:
910 return ret;
911 }
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