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1 office 1 /*
2 * mtd - simple memory technology device manipulation tool
3 *
4 * Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
5 * Copyright (C) 2005-2009 Felix Fietkau <nbd@nbd.name>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License v2
9 * as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 *
20 *
21 * The code is based on the linux-mtd examples.
22 */
23  
24 #define _GNU_SOURCE
25 #include <byteswap.h>
26 #include <endian.h>
27 #include <limits.h>
28 #include <unistd.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31 #include <stdint.h>
32 #include <signal.h>
33 #include <sys/ioctl.h>
34 #include <sys/syscall.h>
35 #include <fcntl.h>
36 #include <errno.h>
37 #include <time.h>
38 #include <string.h>
39 #include <sys/ioctl.h>
40 #include <sys/types.h>
41 #include <sys/param.h>
42 #include <sys/mount.h>
43 #include <sys/stat.h>
44 #include <sys/reboot.h>
45 #include <linux/reboot.h>
46 #include <mtd/mtd-user.h>
47 #include "fis.h"
48 #include "mtd.h"
49  
50 #include <libubox/md5.h>
51  
52 #define MAX_ARGS 8
53 #define JFFS2_DEFAULT_DIR "" /* directory name without /, empty means root dir */
54  
55 #define TRX_MAGIC 0x48445230 /* "HDR0" */
56 #define SEAMA_MAGIC 0x5ea3a417
57 #define WRG_MAGIC 0x20040220
58 #define WRGG03_MAGIC 0x20080321
59  
60 #if !defined(__BYTE_ORDER)
61 #error "Unknown byte order"
62 #endif
63  
64 #if __BYTE_ORDER == __BIG_ENDIAN
65 #define cpu_to_be32(x) (x)
66 #define be32_to_cpu(x) (x)
67 #define le32_to_cpu(x) bswap_32(x)
68 #elif __BYTE_ORDER == __LITTLE_ENDIAN
69 #define cpu_to_be32(x) bswap_32(x)
70 #define be32_to_cpu(x) bswap_32(x)
71 #define le32_to_cpu(x) (x)
72 #else
73 #error "Unsupported endianness"
74 #endif
75  
76 enum mtd_image_format {
77 MTD_IMAGE_FORMAT_UNKNOWN,
78 MTD_IMAGE_FORMAT_TRX,
79 MTD_IMAGE_FORMAT_SEAMA,
80 MTD_IMAGE_FORMAT_WRG,
81 MTD_IMAGE_FORMAT_WRGG03,
82 };
83  
84 static char *buf = NULL;
85 static char *imagefile = NULL;
86 static enum mtd_image_format imageformat = MTD_IMAGE_FORMAT_UNKNOWN;
87 static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
88 static char *tpl_uboot_args_part;
89 static int buflen = 0;
90 int quiet;
91 int no_erase;
92 int mtdsize = 0;
93 int erasesize = 0;
94 int jffs2_skip_bytes=0;
95 int mtdtype = 0;
96  
97 int mtd_open(const char *mtd, bool block)
98 {
99 FILE *fp;
100 char dev[PATH_MAX];
101 int i;
102 int ret;
103 int flags = O_RDWR | O_SYNC;
104 char name[PATH_MAX];
105  
106 snprintf(name, sizeof(name), "\"%s\"", mtd);
107 if ((fp = fopen("/proc/mtd", "r"))) {
108 while (fgets(dev, sizeof(dev), fp)) {
109 if (sscanf(dev, "mtd%d:", &i) && strstr(dev, name)) {
110 snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
111 if ((ret=open(dev, flags))<0) {
112 snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
113 ret=open(dev, flags);
114 }
115 fclose(fp);
116 return ret;
117 }
118 }
119 fclose(fp);
120 }
121  
122 return open(mtd, flags);
123 }
124  
125 int mtd_check_open(const char *mtd)
126 {
127 struct mtd_info_user mtdInfo;
128 int fd;
129  
130 fd = mtd_open(mtd, false);
131 if(fd < 0) {
132 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
133 return -1;
134 }
135  
136 if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
137 fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
138 close(fd);
139 return -1;
140 }
141 mtdsize = mtdInfo.size;
142 erasesize = mtdInfo.erasesize;
143 mtdtype = mtdInfo.type;
144  
145 return fd;
146 }
147  
148 int mtd_block_is_bad(int fd, int offset)
149 {
150 int r = 0;
151 loff_t o = offset;
152  
153 if (mtdtype == MTD_NANDFLASH)
154 {
155 r = ioctl(fd, MEMGETBADBLOCK, &o);
156 if (r < 0)
157 {
158 fprintf(stderr, "Failed to get erase block status\n");
159 exit(1);
160 }
161 }
162 return r;
163 }
164  
165 int mtd_erase_block(int fd, int offset)
166 {
167 struct erase_info_user mtdEraseInfo;
168  
169 mtdEraseInfo.start = offset;
170 mtdEraseInfo.length = erasesize;
171 ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
172 if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0)
173 return -1;
174  
175 return 0;
176 }
177  
178 int mtd_write_buffer(int fd, const char *buf, int offset, int length)
179 {
180 lseek(fd, offset, SEEK_SET);
181 write(fd, buf, length);
182 return 0;
183 }
184  
185 static int
186 image_check(int imagefd, const char *mtd)
187 {
188 uint32_t magic;
189 int ret = 1;
190 int bufread;
191  
192 while (buflen < sizeof(magic)) {
193 bufread = read(imagefd, buf + buflen, sizeof(magic) - buflen);
194 if (bufread < 1)
195 break;
196  
197 buflen += bufread;
198 }
199  
200 if (buflen < sizeof(magic)) {
201 fprintf(stdout, "Could not get image magic\n");
202 return 0;
203 }
204  
205 magic = ((uint32_t *)buf)[0];
206  
207 if (be32_to_cpu(magic) == TRX_MAGIC)
208 imageformat = MTD_IMAGE_FORMAT_TRX;
209 else if (be32_to_cpu(magic) == SEAMA_MAGIC)
210 imageformat = MTD_IMAGE_FORMAT_SEAMA;
211 else if (le32_to_cpu(magic) == WRG_MAGIC)
212 imageformat = MTD_IMAGE_FORMAT_WRG;
213 else if (le32_to_cpu(magic) == WRGG03_MAGIC)
214 imageformat = MTD_IMAGE_FORMAT_WRGG03;
215  
216 switch (imageformat) {
217 case MTD_IMAGE_FORMAT_TRX:
218 if (trx_check)
219 ret = trx_check(imagefd, mtd, buf, &buflen);
220 break;
221 case MTD_IMAGE_FORMAT_SEAMA:
222 case MTD_IMAGE_FORMAT_WRG:
223 case MTD_IMAGE_FORMAT_WRGG03:
224 break;
225 default:
226 #ifdef target_brcm
227 if (!strcmp(mtd, "firmware"))
228 ret = 0;
229 #endif
230 break;
231 }
232  
233 return ret;
234 }
235  
236 static int mtd_check(const char *mtd)
237 {
238 char *next = NULL;
239 char *str = NULL;
240 int fd;
241  
242 if (strchr(mtd, ':')) {
243 str = strdup(mtd);
244 mtd = str;
245 }
246  
247 do {
248 next = strchr(mtd, ':');
249 if (next) {
250 *next = 0;
251 next++;
252 }
253  
254 fd = mtd_check_open(mtd);
255 if (fd < 0)
256 return 0;
257  
258 if (!buf)
259 buf = malloc(erasesize);
260  
261 close(fd);
262 mtd = next;
263 } while (next);
264  
265 if (str)
266 free(str);
267  
268 return 1;
269 }
270  
271 static int
272 mtd_unlock(const char *mtd)
273 {
274 struct erase_info_user mtdLockInfo;
275 char *next = NULL;
276 char *str = NULL;
277 int fd;
278  
279 if (strchr(mtd, ':')) {
280 str = strdup(mtd);
281 mtd = str;
282 }
283  
284 do {
285 next = strchr(mtd, ':');
286 if (next) {
287 *next = 0;
288 next++;
289 }
290  
291 fd = mtd_check_open(mtd);
292 if(fd < 0) {
293 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
294 exit(1);
295 }
296  
297 if (quiet < 2)
298 fprintf(stderr, "Unlocking %s ...\n", mtd);
299  
300 mtdLockInfo.start = 0;
301 mtdLockInfo.length = mtdsize;
302 ioctl(fd, MEMUNLOCK, &mtdLockInfo);
303 close(fd);
304 mtd = next;
305 } while (next);
306  
307 if (str)
308 free(str);
309  
310 return 0;
311 }
312  
313 static int
314 mtd_erase(const char *mtd)
315 {
316 int fd;
317 struct erase_info_user mtdEraseInfo;
318  
319 if (quiet < 2)
320 fprintf(stderr, "Erasing %s ...\n", mtd);
321  
322 fd = mtd_check_open(mtd);
323 if(fd < 0) {
324 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
325 exit(1);
326 }
327  
328 mtdEraseInfo.length = erasesize;
329  
330 for (mtdEraseInfo.start = 0;
331 mtdEraseInfo.start < mtdsize;
332 mtdEraseInfo.start += erasesize) {
333 if (mtd_block_is_bad(fd, mtdEraseInfo.start)) {
334 if (!quiet)
335 fprintf(stderr, "\nSkipping bad block at 0x%x ", mtdEraseInfo.start);
336 } else {
337 ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
338 if(ioctl(fd, MEMERASE, &mtdEraseInfo))
339 fprintf(stderr, "Failed to erase block on %s at 0x%x\n", mtd, mtdEraseInfo.start);
340 }
341 }
342  
343 close(fd);
344 return 0;
345  
346 }
347  
348 static int
349 mtd_dump(const char *mtd, int part_offset, int size)
350 {
351 int ret = 0, offset = 0;
352 int fd;
353 char *buf;
354  
355 if (quiet < 2)
356 fprintf(stderr, "Dumping %s ...\n", mtd);
357  
358 fd = mtd_check_open(mtd);
359 if(fd < 0) {
360 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
361 return -1;
362 }
363  
364 if (!size)
365 size = mtdsize;
366  
367 if (part_offset)
368 lseek(fd, part_offset, SEEK_SET);
369  
370 buf = malloc(erasesize);
371 if (!buf)
372 return -1;
373  
374 do {
375 int len = (size > erasesize) ? (erasesize) : (size);
376 int rlen = read(fd, buf, len);
377  
378 if (rlen < 0) {
379 if (errno == EINTR)
380 continue;
381 ret = -1;
382 goto out;
383 }
384 if (!rlen || rlen != len)
385 break;
386 if (mtd_block_is_bad(fd, offset)) {
387 fprintf(stderr, "skipping bad block at 0x%08x\n", offset);
388 } else {
389 size -= rlen;
390 write(1, buf, rlen);
391 }
392 offset += rlen;
393 } while (size > 0);
394  
395 out:
396 close(fd);
397 return ret;
398 }
399  
400 static int
401 mtd_verify(const char *mtd, char *file)
402 {
403 uint32_t f_md5[4], m_md5[4];
404 struct stat s;
405 md5_ctx_t ctx;
406 int ret = 0;
407 int fd;
408  
409 if (quiet < 2)
410 fprintf(stderr, "Verifying %s against %s ...\n", mtd, file);
411  
412 if (stat(file, &s) || md5sum(file, f_md5) < 0) {
413 fprintf(stderr, "Failed to hash %s\n", file);
414 return -1;
415 }
416  
417 fd = mtd_check_open(mtd);
418 if(fd < 0) {
419 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
420 return -1;
421 }
422  
423 md5_begin(&ctx);
424 do {
425 char buf[256];
426 int len = (s.st_size > sizeof(buf)) ? (sizeof(buf)) : (s.st_size);
427 int rlen = read(fd, buf, len);
428  
429 if (rlen < 0) {
430 if (errno == EINTR)
431 continue;
432 ret = -1;
433 goto out;
434 }
435 if (!rlen)
436 break;
437 md5_hash(buf, rlen, &ctx);
438 s.st_size -= rlen;
439 } while (s.st_size > 0);
440  
441 md5_end(m_md5, &ctx);
442  
443 fprintf(stderr, "%08x%08x%08x%08x - %s\n", m_md5[0], m_md5[1], m_md5[2], m_md5[3], mtd);
444 fprintf(stderr, "%08x%08x%08x%08x - %s\n", f_md5[0], f_md5[1], f_md5[2], f_md5[3], file);
445  
446 ret = memcmp(f_md5, m_md5, sizeof(m_md5));
447 if (!ret)
448 fprintf(stderr, "Success\n");
449 else
450 fprintf(stderr, "Failed\n");
451  
452 out:
453 close(fd);
454 return ret;
455 }
456  
457 static void
458 indicate_writing(const char *mtd)
459 {
460 if (quiet < 2)
461 fprintf(stderr, "\nWriting from %s to %s ... ", imagefile, mtd);
462  
463 if (!quiet)
464 fprintf(stderr, " [ ]");
465 }
466  
467 static int
468 mtd_write(int imagefd, const char *mtd, char *fis_layout, size_t part_offset)
469 {
470 char *next = NULL;
471 char *str = NULL;
472 int fd, result;
473 ssize_t r, w, e;
474 ssize_t skip = 0;
475 uint32_t offset = 0;
476 int jffs2_replaced = 0;
477 int skip_bad_blocks = 0;
478  
479 #ifdef FIS_SUPPORT
480 static struct fis_part new_parts[MAX_ARGS];
481 static struct fis_part old_parts[MAX_ARGS];
482 int n_new = 0, n_old = 0;
483  
484 if (fis_layout) {
485 const char *tmp = mtd;
486 char *word, *brkt;
487 int ret;
488  
489 memset(&old_parts, 0, sizeof(old_parts));
490 memset(&new_parts, 0, sizeof(new_parts));
491  
492 do {
493 next = strchr(tmp, ':');
494 if (!next)
495 next = (char *) tmp + strlen(tmp);
496  
497 memcpy(old_parts[n_old].name, tmp, next - tmp);
498  
499 n_old++;
500 tmp = next + 1;
501 } while(*next);
502  
503 for (word = strtok_r(fis_layout, ",", &brkt);
504 word;
505 word = strtok_r(NULL, ",", &brkt)) {
506  
507 tmp = strtok(word, ":");
508 strncpy((char *) new_parts[n_new].name, tmp, sizeof(new_parts[n_new].name) - 1);
509  
510 tmp = strtok(NULL, ":");
511 if (!tmp)
512 goto next;
513  
514 new_parts[n_new].size = strtoul(tmp, NULL, 0);
515  
516 tmp = strtok(NULL, ":");
517 if (!tmp)
518 goto next;
519  
520 new_parts[n_new].loadaddr = strtoul(tmp, NULL, 16);
521 next:
522 n_new++;
523 }
524 ret = fis_validate(old_parts, n_old, new_parts, n_new);
525 if (ret < 0) {
526 fprintf(stderr, "Failed to validate the new FIS partition table\n");
527 exit(1);
528 }
529 if (ret == 0)
530 fis_layout = NULL;
531 }
532 #endif
533  
534 if (strchr(mtd, ':')) {
535 str = strdup(mtd);
536 mtd = str;
537 }
538  
539 r = 0;
540  
541 resume:
542 next = strchr(mtd, ':');
543 if (next) {
544 *next = 0;
545 next++;
546 }
547  
548 fd = mtd_check_open(mtd);
549 if(fd < 0) {
550 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
551 exit(1);
552 }
553 if (part_offset > 0) {
554 fprintf(stderr, "Seeking on mtd device '%s' to: %zu\n", mtd, part_offset);
555 lseek(fd, part_offset, SEEK_SET);
556 }
557  
558 /* Write TP-Link recovery flag */
559 if (tpl_uboot_args_part && mtd_tpl_recoverflag_write) {
560 if (quiet < 2)
561 fprintf(stderr, "Writing recovery flag to %s\n", tpl_uboot_args_part);
562 result = mtd_tpl_recoverflag_write(tpl_uboot_args_part, true);
563 if (result < 0) {
564 fprintf(stderr, "Could not write TP-Link recovery flag to %s: %i", mtd, result);
565 exit(1);
566 }
567 }
568  
569 indicate_writing(mtd);
570  
571 w = e = 0;
572 for (;;) {
573 /* buffer may contain data already (from trx check or last mtd partition write attempt) */
574 while (buflen < erasesize) {
575 r = read(imagefd, buf + buflen, erasesize - buflen);
576 if (r < 0) {
577 if ((errno == EINTR) || (errno == EAGAIN))
578 continue;
579 else {
580 perror("read");
581 break;
582 }
583 }
584  
585 if (r == 0)
586 break;
587  
588 buflen += r;
589 }
590  
591 if (buflen == 0)
592 break;
593  
594 if (buflen < erasesize) {
595 /* Pad block to eraseblock size */
596 memset(&buf[buflen], 0xff, erasesize - buflen);
597 buflen = erasesize;
598 }
599  
600 if (skip > 0) {
601 skip -= buflen;
602 buflen = 0;
603 if (skip <= 0)
604 indicate_writing(mtd);
605  
606 continue;
607 }
608  
609 if (jffs2file && w >= jffs2_skip_bytes) {
610 if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF) - 1) == 0) {
611 if (!quiet)
612 fprintf(stderr, "\b\b\b ");
613 if (quiet < 2)
614 fprintf(stderr, "\nAppending jffs2 data from %s to %s..\n.", jffs2file, mtd);
615 /* got an EOF marker - this is the place to add some jffs2 data */
616 skip = mtd_replace_jffs2(mtd, fd, e, jffs2file);
617 jffs2_replaced = 1;
618  
619 /* don't add it again */
620 jffs2file = NULL;
621  
622 w += skip;
623 e += skip;
624 skip -= buflen;
625 buflen = 0;
626 offset = 0;
627 continue;
628 }
629 /* no EOF marker, make sure we figure out the last inode number
630 * before appending some data */
631 mtd_parse_jffs2data(buf, jffs2dir);
632 }
633  
634 /* need to erase the next block before writing data to it */
635 if(!no_erase)
636 {
637 while (w + buflen > e - skip_bad_blocks) {
638 if (!quiet)
639 fprintf(stderr, "\b\b\b[e]");
640  
641 if (mtd_block_is_bad(fd, e)) {
642 if (!quiet)
643 fprintf(stderr, "\nSkipping bad block at 0x%08zx ", e);
644  
645 skip_bad_blocks += erasesize;
646 e += erasesize;
647  
648 // Move the file pointer along over the bad block.
649 lseek(fd, erasesize, SEEK_CUR);
650 continue;
651 }
652  
653 if (mtd_erase_block(fd, e + part_offset) < 0) {
654 if (next) {
655 if (w < e) {
656 write(fd, buf + offset, e - w);
657 offset = e - w;
658 }
659 w = 0;
660 e = 0;
661 close(fd);
662 mtd = next;
663 fprintf(stderr, "\b\b\b \n");
664 goto resume;
665 } else {
666 fprintf(stderr, "Failed to erase block\n");
667 exit(1);
668 }
669 }
670  
671 /* erase the chunk */
672 e += erasesize;
673 }
674 }
675  
676 if (!quiet)
677 fprintf(stderr, "\b\b\b[w]");
678  
679 if ((result = write(fd, buf + offset, buflen)) < buflen) {
680 if (result < 0) {
681 fprintf(stderr, "Error writing image.\n");
682 exit(1);
683 } else {
684 fprintf(stderr, "Insufficient space.\n");
685 exit(1);
686 }
687 }
688 w += buflen;
689  
690 buflen = 0;
691 offset = 0;
692 }
693  
694 if (jffs2_replaced) {
695 switch (imageformat) {
696 case MTD_IMAGE_FORMAT_TRX:
697 if (trx_fixup)
698 trx_fixup(fd, mtd);
699 break;
700 case MTD_IMAGE_FORMAT_SEAMA:
701 if (mtd_fixseama)
702 mtd_fixseama(mtd, 0, 0);
703 break;
704 case MTD_IMAGE_FORMAT_WRG:
705 if (mtd_fixwrg)
706 mtd_fixwrg(mtd, 0, 0);
707 break;
708 case MTD_IMAGE_FORMAT_WRGG03:
709 if (mtd_fixwrgg)
710 mtd_fixwrgg(mtd, 0, 0);
711 break;
712 default:
713 break;
714 }
715 }
716  
717 if (!quiet)
718 fprintf(stderr, "\b\b\b\b ");
719  
720 if (quiet < 2)
721 fprintf(stderr, "\n");
722  
723 #ifdef FIS_SUPPORT
724 if (fis_layout) {
725 if (fis_remap(old_parts, n_old, new_parts, n_new) < 0)
726 fprintf(stderr, "Failed to update the FIS partition table\n");
727 }
728 #endif
729  
730 close(fd);
731  
732 /* Clear TP-Link recovery flag */
733 if (tpl_uboot_args_part && mtd_tpl_recoverflag_write) {
734 if (quiet < 2)
735 fprintf(stderr, "Removing recovery flag from %s\n", tpl_uboot_args_part);
736 result = mtd_tpl_recoverflag_write(tpl_uboot_args_part, false);
737 if (result < 0) {
738 fprintf(stderr, "Could not clear TP-Link recovery flag to %s: %i", mtd, result);
739 exit(1);
740 }
741 }
742  
743 return 0;
744 }
745  
746 static void usage(void)
747 {
748 fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>[:<device>...]\n\n"
749 "The device is in the format of mtdX (eg: mtd4) or its label.\n"
750 "mtd recognizes these commands:\n"
751 " unlock unlock the device\n"
752 " refresh refresh mtd partition\n"
753 " erase erase all data on device\n"
754 " verify <imagefile>|- verify <imagefile> (use - for stdin) to device\n"
755 " write <imagefile>|- write <imagefile> (use - for stdin) to device\n"
756 " jffs2write <file> append <file> to the jffs2 partition on the device\n");
757 if (mtd_resetbc) {
758 fprintf(stderr,
759 " resetbc <device> reset the uboot boot counter\n");
760 }
761 if (mtd_fixtrx) {
762 fprintf(stderr,
763 " fixtrx fix the checksum in a trx header on first boot\n");
764 }
765 if (mtd_fixseama) {
766 fprintf(stderr,
767 " fixseama fix the checksum in a seama header on first boot\n");
768 }
769 if (mtd_fixwrg) {
770 fprintf(stderr,
771 " fixwrg fix the checksum in a wrg header on first boot\n");
772 }
773 if (mtd_fixwrgg) {
774 fprintf(stderr,
775 " fixwrgg fix the checksum in a wrgg header on first boot\n");
776 }
777 fprintf(stderr,
778 "Following options are available:\n"
779 " -q quiet mode (once: no [w] on writing,\n"
780 " twice: no status messages)\n"
781 " -n write without first erasing the blocks\n"
782 " -r reboot after successful command\n"
783 " -f force write without trx checks\n"
784 " -e <device> erase <device> before executing the command\n"
785 " -d <name> directory for jffs2write, defaults to \"tmp\"\n"
786 " -j <name> integrate <file> into jffs2 data when writing an image\n"
787 " -s <number> skip the first n bytes when appending data to the jffs2 partiton, defaults to \"0\"\n"
788 " -p <number> write beginning at partition offset\n"
789 " -l <length> the length of data that we want to dump\n");
790 if (mtd_fixtrx) {
791 fprintf(stderr,
792 " -o offset offset of the image header in the partition(for fixtrx)\n");
793 }
794 if (mtd_fixtrx || mtd_fixseama || mtd_fixwrg || mtd_fixwrgg) {
795 fprintf(stderr,
796 " -c datasize amount of data to be used for checksum calculation (for fixtrx / fixseama / fixwrg / fixwrgg)\n");
797 }
798 if (mtd_tpl_recoverflag_write) {
799 fprintf(stderr,
800 " -t <partition> write TP-Link recovery-flag to <partition> (for write)\n");
801 }
802 fprintf(stderr,
803 #ifdef FIS_SUPPORT
804 " -F <part>[:<size>[:<entrypoint>]][,<part>...]\n"
805 " alter the fis partition table to create new partitions replacing\n"
806 " the partitions provided as argument to the write command\n"
807 " (only valid together with the write command)\n"
808 #endif
809 "\n"
810 "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
811 " mtd -r write linux.trx linux\n\n");
812 exit(1);
813 }
814  
815 static void do_reboot(void)
816 {
817 fprintf(stderr, "Rebooting ...\n");
818 fflush(stderr);
819  
820 /* try regular reboot method first */
821 system("/sbin/reboot");
822 sleep(2);
823  
824 /* if we're still alive at this point, force the kernel to reboot */
825 syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
826 }
827  
828 int main (int argc, char **argv)
829 {
830 int ch, i, boot, imagefd = 0, force, unlocked;
831 char *erase[MAX_ARGS], *device = NULL;
832 char *fis_layout = NULL;
833 size_t offset = 0, data_size = 0, part_offset = 0, dump_len = 0;
834 enum {
835 CMD_ERASE,
836 CMD_WRITE,
837 CMD_UNLOCK,
838 CMD_JFFS2WRITE,
839 CMD_FIXTRX,
840 CMD_FIXSEAMA,
841 CMD_FIXWRG,
842 CMD_FIXWRGG,
843 CMD_VERIFY,
844 CMD_DUMP,
845 CMD_RESETBC,
846 } cmd = -1;
847  
848 erase[0] = NULL;
849 boot = 0;
850 force = 0;
851 buflen = 0;
852 quiet = 0;
853 no_erase = 0;
854  
855 while ((ch = getopt(argc, argv,
856 #ifdef FIS_SUPPORT
857 "F:"
858 #endif
859 "frnqe:d:s:j:p:o:c:t:l:")) != -1)
860 switch (ch) {
861 case 'f':
862 force = 1;
863 break;
864 case 'r':
865 boot = 1;
866 break;
867 case 'n':
868 no_erase = 1;
869 break;
870 case 'j':
871 jffs2file = optarg;
872 break;
873 case 's':
874 errno = 0;
875 jffs2_skip_bytes = strtoul(optarg, 0, 0);
876 if (errno) {
877 fprintf(stderr, "-s: illegal numeric string\n");
878 usage();
879 }
880 break;
881 case 'q':
882 quiet++;
883 break;
884 case 'e':
885 i = 0;
886 while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
887 i++;
888  
889 erase[i++] = optarg;
890 erase[i] = NULL;
891 break;
892 case 'd':
893 jffs2dir = optarg;
894 break;
895 case 'p':
896 errno = 0;
897 part_offset = strtoul(optarg, 0, 0);
898 if (errno) {
899 fprintf(stderr, "-p: illegal numeric string\n");
900 usage();
901 }
902 break;
903 case 'l':
904 errno = 0;
905 dump_len = strtoul(optarg, 0, 0);
906 if (errno) {
907 fprintf(stderr, "-l: illegal numeric string\n");
908 usage();
909 }
910 break;
911 case 'o':
912 errno = 0;
913 offset = strtoul(optarg, 0, 0);
914 if (errno) {
915 fprintf(stderr, "-o: illegal numeric string\n");
916 usage();
917 }
918 break;
919 case 'c':
920 errno = 0;
921 data_size = strtoul(optarg, 0, 0);
922 if (errno) {
923 fprintf(stderr, "-c: illegal numeric string\n");
924 usage();
925 }
926 break;
927 case 't':
928 tpl_uboot_args_part = optarg;
929 break;
930 #ifdef FIS_SUPPORT
931 case 'F':
932 fis_layout = optarg;
933 break;
934 #endif
935 case '?':
936 default:
937 usage();
938 }
939 argc -= optind;
940 argv += optind;
941  
942 if (argc < 2)
943 usage();
944  
945 if ((strcmp(argv[0], "unlock") == 0) && (argc == 2)) {
946 cmd = CMD_UNLOCK;
947 device = argv[1];
948 } else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
949 cmd = CMD_ERASE;
950 device = argv[1];
951 } else if (((strcmp(argv[0], "resetbc") == 0) && (argc == 2)) && mtd_resetbc) {
952 cmd = CMD_RESETBC;
953 device = argv[1];
954 } else if (((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) && mtd_fixtrx) {
955 cmd = CMD_FIXTRX;
956 device = argv[1];
957 } else if (((strcmp(argv[0], "fixseama") == 0) && (argc == 2)) && mtd_fixseama) {
958 cmd = CMD_FIXSEAMA;
959 device = argv[1];
960 } else if (((strcmp(argv[0], "fixwrg") == 0) && (argc == 2)) && mtd_fixwrg) {
961 cmd = CMD_FIXWRG;
962 device = argv[1];
963 } else if (((strcmp(argv[0], "fixwrgg") == 0) && (argc == 2)) && mtd_fixwrgg) {
964 cmd = CMD_FIXWRGG;
965 device = argv[1];
966 } else if ((strcmp(argv[0], "verify") == 0) && (argc == 3)) {
967 cmd = CMD_VERIFY;
968 imagefile = argv[1];
969 device = argv[2];
970 } else if ((strcmp(argv[0], "dump") == 0) && (argc == 2)) {
971 cmd = CMD_DUMP;
972 device = argv[1];
973 } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
974 cmd = CMD_WRITE;
975 device = argv[2];
976  
977 if (strcmp(argv[1], "-") == 0) {
978 imagefile = "<stdin>";
979 imagefd = 0;
980 } else {
981 imagefile = argv[1];
982 if ((imagefd = open(argv[1], O_RDONLY)) < 0) {
983 fprintf(stderr, "Couldn't open image file: %s!\n", imagefile);
984 exit(1);
985 }
986 }
987  
988 if (!mtd_check(device)) {
989 fprintf(stderr, "Can't open device for writing!\n");
990 exit(1);
991 }
992 /* check trx file before erasing or writing anything */
993 if (!image_check(imagefd, device) && !force) {
994 fprintf(stderr, "Image check failed.\n");
995 exit(1);
996 }
997 } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) {
998 cmd = CMD_JFFS2WRITE;
999 device = argv[2];
1000  
1001 imagefile = argv[1];
1002 if (!mtd_check(device)) {
1003 fprintf(stderr, "Can't open device for writing!\n");
1004 exit(1);
1005 }
1006 } else {
1007 usage();
1008 }
1009  
1010 sync();
1011  
1012 i = 0;
1013 unlocked = 0;
1014 while (erase[i] != NULL) {
1015 mtd_unlock(erase[i]);
1016 mtd_erase(erase[i]);
1017 if (strcmp(erase[i], device) == 0)
1018 unlocked = 1;
1019 i++;
1020 }
1021  
1022 switch (cmd) {
1023 case CMD_UNLOCK:
1024 if (!unlocked)
1025 mtd_unlock(device);
1026 break;
1027 case CMD_VERIFY:
1028 mtd_verify(device, imagefile);
1029 break;
1030 case CMD_DUMP:
1031 mtd_dump(device, offset, dump_len);
1032 break;
1033 case CMD_ERASE:
1034 if (!unlocked)
1035 mtd_unlock(device);
1036 mtd_erase(device);
1037 break;
1038 case CMD_WRITE:
1039 if (!unlocked)
1040 mtd_unlock(device);
1041 mtd_write(imagefd, device, fis_layout, part_offset);
1042 break;
1043 case CMD_JFFS2WRITE:
1044 if (!unlocked)
1045 mtd_unlock(device);
1046 mtd_write_jffs2(device, imagefile, jffs2dir);
1047 break;
1048 case CMD_FIXTRX:
1049 if (mtd_fixtrx) {
1050 mtd_fixtrx(device, offset, data_size);
1051 }
1052 break;
1053 case CMD_RESETBC:
1054 if (mtd_resetbc) {
1055 mtd_resetbc(device);
1056 }
1057 break;
1058 case CMD_FIXSEAMA:
1059 if (mtd_fixseama)
1060 mtd_fixseama(device, 0, data_size);
1061 break;
1062 case CMD_FIXWRG:
1063 if (mtd_fixwrg)
1064 mtd_fixwrg(device, 0, data_size);
1065 break;
1066 case CMD_FIXWRGG:
1067 if (mtd_fixwrgg)
1068 mtd_fixwrgg(device, 0, data_size);
1069 break;
1070 }
1071  
1072 sync();
1073  
1074 if (boot)
1075 do_reboot();
1076  
1077 return 0;
1078 }