package/system/mtd/src/mtd.c

   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 "crc32.h"
  48 #include "fis.h"
  49 #include "mtd.h"
  50
  51 #include <libubox/md5.h>
  52
  53 #define MAX_ARGS 8
  54 #define JFFS2_DEFAULT_DIR       "" /* directory name without /, empty means root dir */
  55
  56 #define TRX_MAGIC               0x48445230      /* "HDR0" */
  57 #define SEAMA_MAGIC             0x5ea3a417
  58 #define WRG_MAGIC               0x20040220
  59 #define WRGG03_MAGIC            0x20080321
  60
  61 #if !defined(__BYTE_ORDER)
  62 #error "Unknown byte order"
  63 #endif
  64
  65 #if __BYTE_ORDER == __BIG_ENDIAN
  66 #define cpu_to_be32(x)  (x)
  67 #define be32_to_cpu(x)  (x)
  68 #define le32_to_cpu(x)  bswap_32(x)
  69 #elif __BYTE_ORDER == __LITTLE_ENDIAN
  70 #define cpu_to_be32(x)  bswap_32(x)
  71 #define be32_to_cpu(x)  bswap_32(x)
  72 #define le32_to_cpu(x)  (x)
  73 #else
  74 #error "Unsupported endianness"
  75 #endif
  76
  77 enum mtd_image_format {
  78         MTD_IMAGE_FORMAT_UNKNOWN,
  79         MTD_IMAGE_FORMAT_TRX,
  80         MTD_IMAGE_FORMAT_SEAMA,
  81         MTD_IMAGE_FORMAT_WRG,
  82         MTD_IMAGE_FORMAT_WRGG03,
  83 };
  84
  85 static char *buf = NULL;
  86 static char *imagefile = NULL;
  87 static enum mtd_image_format imageformat = MTD_IMAGE_FORMAT_UNKNOWN;
  88 static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
  89 static char *tpl_uboot_args_part;
  90 static int buflen = 0;
  91 int quiet;
  92 int no_erase;
  93 int mtdsize = 0;
  94 int erasesize = 0;
  95 int jffs2_skip_bytes=0;
  96 int mtdtype = 0;
  97
  98 int mtd_open(const char *mtd, bool block)
  99 {
 100         FILE *fp;
 101         char dev[PATH_MAX];
 102         int i;
 103         int ret;
 104         int flags = O_RDWR | O_SYNC;
 105         char name[PATH_MAX];
 106
 107         snprintf(name, sizeof(name), "\"%s\"", mtd);
 108         if ((fp = fopen("/proc/mtd", "r"))) {
 109                 while (fgets(dev, sizeof(dev), fp)) {
 110                         if (sscanf(dev, "mtd%d:", &i) && strstr(dev, name)) {
 111                                 snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
 112                                 if ((ret=open(dev, flags))<0) {
 113                                         snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
 114                                         ret=open(dev, flags);
 115                                 }
 116                                 fclose(fp);
 117                                 return ret;
 118                         }
 119                 }
 120                 fclose(fp);
 121         }
 122
 123         return open(mtd, flags);
 124 }
 125
 126 int mtd_check_open(const char *mtd)
 127 {
 128         struct mtd_info_user mtdInfo;
 129         int fd;
 130
 131         fd = mtd_open(mtd, false);
 132         if(fd < 0) {
 133                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 134                 return -1;
 135         }
 136
 137         if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
 138                 fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
 139                 close(fd);
 140                 return -1;
 141         }
 142         mtdsize = mtdInfo.size;
 143         erasesize = mtdInfo.erasesize;
 144         mtdtype = mtdInfo.type;
 145
 146         return fd;
 147 }
 148
 149 int mtd_block_is_bad(int fd, int offset)
 150 {
 151         int r = 0;
 152         loff_t o = offset;
 153
 154         if (mtdtype == MTD_NANDFLASH)
 155         {
 156                 r = ioctl(fd, MEMGETBADBLOCK, &o);
 157                 if (r < 0)
 158                 {
 159                         fprintf(stderr, "Failed to get erase block status\n");
 160                         exit(1);
 161                 }
 162         }
 163         return r;
 164 }
 165
 166 int mtd_erase_block(int fd, int offset)
 167 {
 168         struct erase_info_user mtdEraseInfo;
 169
 170         mtdEraseInfo.start = offset;
 171         mtdEraseInfo.length = erasesize;
 172         ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
 173         if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0)
 174                 return -1;
 175
 176         return 0;
 177 }
 178
 179 int mtd_write_buffer(int fd, const char *buf, int offset, int length)
 180 {
 181         lseek(fd, offset, SEEK_SET);
 182         write(fd, buf, length);
 183         return 0;
 184 }
 185
 186 static int
 187 image_check(int imagefd, const char *mtd)
 188 {
 189         uint32_t magic;
 190         int ret = 1;
 191         int bufread;
 192
 193         while (buflen < sizeof(magic)) {
 194                 bufread = read(imagefd, buf + buflen, sizeof(magic) - buflen);
 195                 if (bufread < 1)
 196                         break;
 197
 198                 buflen += bufread;
 199         }
 200
 201         if (buflen < sizeof(magic)) {
 202                 fprintf(stdout, "Could not get image magic\n");
 203                 return 0;
 204         }
 205
 206         magic = ((uint32_t *)buf)[0];
 207
 208         if (be32_to_cpu(magic) == TRX_MAGIC)
 209                 imageformat = MTD_IMAGE_FORMAT_TRX;
 210         else if (be32_to_cpu(magic) == SEAMA_MAGIC)
 211                 imageformat = MTD_IMAGE_FORMAT_SEAMA;
 212         else if (le32_to_cpu(magic) == WRG_MAGIC)
 213                 imageformat = MTD_IMAGE_FORMAT_WRG;
 214         else if (le32_to_cpu(magic) == WRGG03_MAGIC)
 215                 imageformat = MTD_IMAGE_FORMAT_WRGG03;
 216
 217         switch (imageformat) {
 218         case MTD_IMAGE_FORMAT_TRX:
 219                 if (trx_check)
 220                         ret = trx_check(imagefd, mtd, buf, &buflen);
 221                 break;
 222         case MTD_IMAGE_FORMAT_SEAMA:
 223         case MTD_IMAGE_FORMAT_WRG:
 224         case MTD_IMAGE_FORMAT_WRGG03:
 225                 break;
 226         default:
 227 #ifdef target_brcm
 228                 if (!strcmp(mtd, "firmware"))
 229                         ret = 0;
 230 #endif
 231                 break;
 232         }
 233
 234         return ret;
 235 }
 236
 237 static int mtd_check(const char *mtd)
 238 {
 239         char *next = NULL;
 240         char *str = NULL;
 241         int fd;
 242
 243         if (strchr(mtd, ':')) {
 244                 str = strdup(mtd);
 245                 mtd = str;
 246         }
 247
 248         do {
 249                 next = strchr(mtd, ':');
 250                 if (next) {
 251                         *next = 0;
 252                         next++;
 253                 }
 254
 255                 fd = mtd_check_open(mtd);
 256                 if (fd < 0)
 257                         return 0;
 258
 259                 if (!buf)
 260                         buf = malloc(erasesize);
 261
 262                 close(fd);
 263                 mtd = next;
 264         } while (next);
 265
 266         if (str)
 267                 free(str);
 268
 269         return 1;
 270 }
 271
 272 static int
 273 mtd_unlock(const char *mtd)
 274 {
 275         struct erase_info_user mtdLockInfo;
 276         char *next = NULL;
 277         char *str = NULL;
 278         int fd;
 279
 280         if (strchr(mtd, ':')) {
 281                 str = strdup(mtd);
 282                 mtd = str;
 283         }
 284
 285         do {
 286                 next = strchr(mtd, ':');
 287                 if (next) {
 288                         *next = 0;
 289                         next++;
 290                 }
 291
 292                 fd = mtd_check_open(mtd);
 293                 if(fd < 0) {
 294                         fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 295                         exit(1);
 296                 }
 297
 298                 if (quiet < 2)
 299                         fprintf(stderr, "Unlocking %s ...\n", mtd);
 300
 301                 mtdLockInfo.start = 0;
 302                 mtdLockInfo.length = mtdsize;
 303                 ioctl(fd, MEMUNLOCK, &mtdLockInfo);
 304                 close(fd);
 305                 mtd = next;
 306         } while (next);
 307
 308         if (str)
 309                 free(str);
 310
 311         return 0;
 312 }
 313
 314 static int
 315 mtd_erase(const char *mtd)
 316 {
 317         int fd;
 318         struct erase_info_user mtdEraseInfo;
 319
 320         if (quiet < 2)
 321                 fprintf(stderr, "Erasing %s ...\n", mtd);
 322
 323         fd = mtd_check_open(mtd);
 324         if(fd < 0) {
 325                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 326                 exit(1);
 327         }
 328
 329         mtdEraseInfo.length = erasesize;
 330
 331         for (mtdEraseInfo.start = 0;
 332                  mtdEraseInfo.start < mtdsize;
 333                  mtdEraseInfo.start += erasesize) {
 334                 if (mtd_block_is_bad(fd, mtdEraseInfo.start)) {
 335                         if (!quiet)
 336                                 fprintf(stderr, "\nSkipping bad block at 0x%x   ", mtdEraseInfo.start);
 337                 } else {
 338                         ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
 339                         if(ioctl(fd, MEMERASE, &mtdEraseInfo))
 340                                 fprintf(stderr, "Failed to erase block on %s at 0x%x\n", mtd, mtdEraseInfo.start);
 341                 }
 342         }
 343
 344         close(fd);
 345         return 0;
 346
 347 }
 348
 349 static int
 350 mtd_dump(const char *mtd, int part_offset, int size)
 351 {
 352         int ret = 0, offset = 0;
 353         int fd;
 354         char *buf;
 355
 356         if (quiet < 2)
 357                 fprintf(stderr, "Dumping %s ...\n", mtd);
 358
 359         fd = mtd_check_open(mtd);
 360         if(fd < 0) {
 361                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 362                 return -1;
 363         }
 364
 365         if (!size)
 366                 size = mtdsize;
 367
 368         if (part_offset)
 369                 lseek(fd, part_offset, SEEK_SET);
 370
 371         buf = malloc(erasesize);
 372         if (!buf)
 373                 return -1;
 374
 375         do {
 376                 int len = (size > erasesize) ? (erasesize) : (size);
 377                 int rlen = read(fd, buf, len);
 378
 379                 if (rlen < 0) {
 380                         if (errno == EINTR)
 381                                 continue;
 382                         ret = -1;
 383                         goto out;
 384                 }
 385                 if (!rlen || rlen != len)
 386                         break;
 387                 if (mtd_block_is_bad(fd, offset)) {
 388                         fprintf(stderr, "skipping bad block at 0x%08x\n", offset);
 389                 } else {
 390                         size -= rlen;
 391                         write(1, buf, rlen);
 392                 }
 393                 offset += rlen;
 394         } while (size > 0);
 395
 396 out:
 397         close(fd);
 398         return ret;
 399 }
 400
 401 static int
 402 mtd_verify(const char *mtd, char *file)
 403 {
 404         uint32_t f_md5[4], m_md5[4];
 405         struct stat s;
 406         md5_ctx_t ctx;
 407         int ret = 0;
 408         int fd;
 409
 410         if (quiet < 2)
 411                 fprintf(stderr, "Verifying %s against %s ...\n", mtd, file);
 412
 413         if (stat(file, &s) || md5sum(file, f_md5) < 0) {
 414                 fprintf(stderr, "Failed to hash %s\n", file);
 415                 return -1;
 416         }
 417
 418         fd = mtd_check_open(mtd);
 419         if(fd < 0) {
 420                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 421                 return -1;
 422         }
 423
 424         md5_begin(&ctx);
 425         do {
 426                 char buf[256];
 427                 int len = (s.st_size > sizeof(buf)) ? (sizeof(buf)) : (s.st_size);
 428                 int rlen = read(fd, buf, len);
 429
 430                 if (rlen < 0) {
 431                         if (errno == EINTR)
 432                                 continue;
 433                         ret = -1;
 434                         goto out;
 435                 }
 436                 if (!rlen)
 437                         break;
 438                 md5_hash(buf, rlen, &ctx);
 439                 s.st_size -= rlen;
 440         } while (s.st_size > 0);
 441
 442         md5_end(m_md5, &ctx);
 443
 444         fprintf(stderr, "%08x%08x%08x%08x - %s\n", m_md5[0], m_md5[1], m_md5[2], m_md5[3], mtd);
 445         fprintf(stderr, "%08x%08x%08x%08x - %s\n", f_md5[0], f_md5[1], f_md5[2], f_md5[3], file);
 446
 447         ret = memcmp(f_md5, m_md5, sizeof(m_md5));
 448         if (!ret)
 449                 fprintf(stderr, "Success\n");
 450         else
 451                 fprintf(stderr, "Failed\n");
 452
 453 out:
 454         close(fd);
 455         return ret;
 456 }
 457
 458 static void
 459 indicate_writing(const char *mtd)
 460 {
 461         if (quiet < 2)
 462                 fprintf(stderr, "\nWriting from %s to %s ... ", imagefile, mtd);
 463
 464         if (!quiet)
 465                 fprintf(stderr, " [ ]");
 466 }
 467
 468 static int
 469 mtd_write(int imagefd, const char *mtd, char *fis_layout, size_t part_offset)
 470 {
 471         char *next = NULL;
 472         char *str = NULL;
 473         int fd, result;
 474         ssize_t r, w, e;
 475         ssize_t skip = 0;
 476         uint32_t offset = 0;
 477         int buflen_raw = 0;
 478         int jffs2_replaced = 0;
 479         int skip_bad_blocks = 0;
 480
 481 #ifdef FIS_SUPPORT
 482         static struct fis_part new_parts[MAX_ARGS];
 483         static struct fis_part old_parts[MAX_ARGS];
 484         struct fis_part *cur_part = NULL;
 485         int n_new = 0, n_old = 0;
 486
 487         if (fis_layout) {
 488                 const char *tmp = mtd;
 489                 char *word, *brkt;
 490                 int ret;
 491
 492                 memset(&old_parts, 0, sizeof(old_parts));
 493                 memset(&new_parts, 0, sizeof(new_parts));
 494                 if (!part_offset)
 495                         cur_part = new_parts;
 496
 497                 do {
 498                         next = strchr(tmp, ':');
 499                         if (!next)
 500                                 next = (char *) tmp + strlen(tmp);
 501
 502                         memcpy(old_parts[n_old].name, tmp, next - tmp);
 503
 504                         n_old++;
 505                         tmp = next + 1;
 506                 } while(*next);
 507
 508                 for (word = strtok_r(fis_layout, ",", &brkt);
 509                      word;
 510                          word = strtok_r(NULL, ",", &brkt)) {
 511
 512                         tmp = strtok(word, ":");
 513                         strncpy((char *) new_parts[n_new].name, tmp, sizeof(new_parts[n_new].name) - 1);
 514
 515                         tmp = strtok(NULL, ":");
 516                         if (!tmp)
 517                                 goto next;
 518
 519                         new_parts[n_new].size = strtoul(tmp, NULL, 0);
 520
 521                         tmp = strtok(NULL, ":");
 522                         if (!tmp)
 523                                 goto next;
 524
 525                         new_parts[n_new].loadaddr = strtoul(tmp, NULL, 16);
 526 next:
 527                         n_new++;
 528                 }
 529                 ret = fis_validate(old_parts, n_old, new_parts, n_new);
 530                 if (ret < 0) {
 531                         fprintf(stderr, "Failed to validate the new FIS partition table\n");
 532                         exit(1);
 533                 }
 534                 if (ret == 0)
 535                         fis_layout = NULL;
 536         }
 537 #endif
 538
 539         if (strchr(mtd, ':')) {
 540                 str = strdup(mtd);
 541                 mtd = str;
 542         }
 543
 544         r = 0;
 545
 546 resume:
 547         next = strchr(mtd, ':');
 548         if (next) {
 549                 *next = 0;
 550                 next++;
 551         }
 552
 553         fd = mtd_check_open(mtd);
 554         if(fd < 0) {
 555                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 556                 exit(1);
 557         }
 558         if (part_offset > 0) {
 559                 fprintf(stderr, "Seeking on mtd device '%s' to: %zu\n", mtd, part_offset);
 560                 lseek(fd, part_offset, SEEK_SET);
 561         }
 562
 563         /* Write TP-Link recovery flag */
 564         if (tpl_uboot_args_part && mtd_tpl_recoverflag_write) {
 565                 if (quiet < 2)
 566                         fprintf(stderr, "Writing recovery flag to %s\n", tpl_uboot_args_part);
 567                 result = mtd_tpl_recoverflag_write(tpl_uboot_args_part, true);
 568                 if (result < 0) {
 569                         fprintf(stderr, "Could not write TP-Link recovery flag to %s: %i", mtd, result);
 570                         exit(1);
 571                 }
 572         }
 573
 574         indicate_writing(mtd);
 575
 576         w = e = 0;
 577         for (;;) {
 578                 /* buffer may contain data already (from trx check or last mtd partition write attempt) */
 579                 while (buflen < erasesize) {
 580                         r = read(imagefd, buf + buflen, erasesize - buflen);
 581                         if (r < 0) {
 582                                 if ((errno == EINTR) || (errno == EAGAIN))
 583                                         continue;
 584                                 else {
 585                                         perror("read");
 586                                         break;
 587                                 }
 588                         }
 589
 590                         if (r == 0)
 591                                 break;
 592
 593                         buflen += r;
 594                 }
 595
 596                 if (buflen_raw == 0)
 597                         buflen_raw = buflen;
 598
 599                 if (buflen == 0)
 600                         break;
 601
 602                 if (buflen < erasesize) {
 603                         /* Pad block to eraseblock size */
 604                         memset(&buf[buflen], 0xff, erasesize - buflen);
 605                         buflen = erasesize;
 606                 }
 607
 608                 if (skip > 0) {
 609                         skip -= buflen;
 610                         buflen_raw = 0;
 611                         buflen = 0;
 612                         if (skip <= 0)
 613                                 indicate_writing(mtd);
 614
 615                         continue;
 616                 }
 617
 618                 if (jffs2file && w >= jffs2_skip_bytes) {
 619                         if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF) - 1) == 0) {
 620                                 if (!quiet)
 621                                         fprintf(stderr, "\b\b\b   ");
 622                                 if (quiet < 2)
 623                                         fprintf(stderr, "\nAppending jffs2 data from %s to %s..\n.", jffs2file, mtd);
 624                                 /* got an EOF marker - this is the place to add some jffs2 data */
 625                                 skip = mtd_replace_jffs2(mtd, fd, e, jffs2file);
 626                                 jffs2_replaced = 1;
 627
 628                                 /* don't add it again */
 629                                 jffs2file = NULL;
 630
 631                                 w += skip;
 632                                 e += skip;
 633                                 skip -= buflen;
 634                                 buflen_raw = 0;
 635                                 buflen = 0;
 636                                 offset = 0;
 637                                 continue;
 638                         }
 639                         /* no EOF marker, make sure we figure out the last inode number
 640                          * before appending some data */
 641                         mtd_parse_jffs2data(buf, jffs2dir);
 642                 }
 643
 644                 /* need to erase the next block before writing data to it */
 645                 if(!no_erase)
 646                 {
 647                         while (w + buflen > e - skip_bad_blocks) {
 648                                 if (!quiet)
 649                                         fprintf(stderr, "\b\b\b[e]");
 650
 651                                 if (mtd_block_is_bad(fd, e)) {
 652                                         if (!quiet)
 653                                                 fprintf(stderr, "\nSkipping bad block at 0x%08zx   ", e);
 654
 655                                         skip_bad_blocks += erasesize;
 656                                         e += erasesize;
 657
 658                                         // Move the file pointer along over the bad block.
 659                                         lseek(fd, erasesize, SEEK_CUR);
 660                                         continue;
 661                                 }
 662
 663                                 if (mtd_erase_block(fd, e + part_offset) < 0) {
 664                                         if (next) {
 665                                                 if (w < e) {
 666                                                         write(fd, buf + offset, e - w);
 667                                                         offset = e - w;
 668                                                 }
 669                                                 w = 0;
 670                                                 e = 0;
 671                                                 close(fd);
 672                                                 mtd = next;
 673                                                 fprintf(stderr, "\b\b\b   \n");
 674                                                 goto resume;
 675                                         } else {
 676                                                 fprintf(stderr, "Failed to erase block\n");
 677                                                 exit(1);
 678                                         }
 679                                 }
 680
 681                                 /* erase the chunk */
 682                                 e += erasesize;
 683                         }
 684                 }
 685
 686                 if (!quiet)
 687                         fprintf(stderr, "\b\b\b[w]");
 688
 689                 if ((result = write(fd, buf + offset, buflen)) < buflen) {
 690                         if (result < 0) {
 691                                 fprintf(stderr, "Error writing image.\n");
 692                                 exit(1);
 693                         } else {
 694                                 fprintf(stderr, "Insufficient space.\n");
 695                                 exit(1);
 696                         }
 697                 }
 698                 w += buflen;
 699
 700 #ifdef FIS_SUPPORT
 701                 if (cur_part && cur_part->size
 702                 && cur_part < &new_parts[MAX_ARGS - 1]
 703                 && cur_part->length + buflen_raw > cur_part->size)
 704                         cur_part++;
 705                 if (cur_part) {
 706                         cur_part->length += buflen_raw;
 707                         cur_part->crc = crc32(cur_part->crc, buf, buflen_raw);
 708                 }
 709 #endif
 710                 buflen_raw = 0;
 711                 buflen = 0;
 712                 offset = 0;
 713         }
 714
 715         if (jffs2_replaced) {
 716                 switch (imageformat) {
 717                 case MTD_IMAGE_FORMAT_TRX:
 718                         if (trx_fixup)
 719                                 trx_fixup(fd, mtd);
 720                         break;
 721                 case MTD_IMAGE_FORMAT_SEAMA:
 722                         if (mtd_fixseama)
 723                                 mtd_fixseama(mtd, 0, 0);
 724                         break;
 725                 case MTD_IMAGE_FORMAT_WRG:
 726                         if (mtd_fixwrg)
 727                                 mtd_fixwrg(mtd, 0, 0);
 728                         break;
 729                 case MTD_IMAGE_FORMAT_WRGG03:
 730                         if (mtd_fixwrgg)
 731                                 mtd_fixwrgg(mtd, 0, 0);
 732                         break;
 733                 default:
 734                         break;
 735                 }
 736         }
 737
 738         if (!quiet)
 739                 fprintf(stderr, "\b\b\b\b    ");
 740
 741         if (quiet < 2)
 742                 fprintf(stderr, "\n");
 743
 744 #ifdef FIS_SUPPORT
 745         if (fis_layout) {
 746                 if (fis_remap(old_parts, n_old, new_parts, n_new) < 0)
 747                         fprintf(stderr, "Failed to update the FIS partition table\n");
 748         }
 749 #endif
 750
 751         close(fd);
 752
 753         /* Clear TP-Link recovery flag */
 754         if (tpl_uboot_args_part && mtd_tpl_recoverflag_write) {
 755                 if (quiet < 2)
 756                         fprintf(stderr, "Removing recovery flag from %s\n", tpl_uboot_args_part);
 757                 result = mtd_tpl_recoverflag_write(tpl_uboot_args_part, false);
 758                 if (result < 0) {
 759                         fprintf(stderr, "Could not clear TP-Link recovery flag to %s: %i", mtd, result);
 760                         exit(1);
 761                 }
 762         }
 763
 764         return 0;
 765 }
 766
 767 static void usage(void)
 768 {
 769         fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>[:<device>...]\n\n"
 770         "The device is in the format of mtdX (eg: mtd4) or its label.\n"
 771         "mtd recognizes these commands:\n"
 772         "        unlock                  unlock the device\n"
 773         "        refresh                 refresh mtd partition\n"
 774         "        erase                   erase all data on device\n"
 775         "        verify <imagefile>|-    verify <imagefile> (use - for stdin) to device\n"
 776         "        write <imagefile>|-     write <imagefile> (use - for stdin) to device\n"
 777         "        jffs2write <file>       append <file> to the jffs2 partition on the device\n");
 778         if (mtd_resetbc) {
 779             fprintf(stderr,
 780         "        resetbc <device>        reset the uboot boot counter\n");
 781         }
 782         if (mtd_fixtrx) {
 783             fprintf(stderr,
 784         "        fixtrx                  fix the checksum in a trx header on first boot\n");
 785         }
 786         if (mtd_fixseama) {
 787             fprintf(stderr,
 788         "        fixseama                fix the checksum in a seama header on first boot\n");
 789         }
 790         if (mtd_fixwrg) {
 791             fprintf(stderr,
 792         "        fixwrg                  fix the checksum in a wrg header on first boot\n");
 793         }
 794         if (mtd_fixwrgg) {
 795             fprintf(stderr,
 796         "        fixwrgg                 fix the checksum in a wrgg header on first boot\n");
 797         }
 798         fprintf(stderr,
 799         "Following options are available:\n"
 800         "        -q                      quiet mode (once: no [w] on writing,\n"
 801         "                                           twice: no status messages)\n"
 802         "        -n                      write without first erasing the blocks\n"
 803         "        -r                      reboot after successful command\n"
 804         "        -f                      force write without trx checks\n"
 805         "        -e <device>             erase <device> before executing the command\n"
 806         "        -d <name>               directory for jffs2write, defaults to \"tmp\"\n"
 807         "        -j <name>               integrate <file> into jffs2 data when writing an image\n"
 808         "        -s <number>             skip the first n bytes when appending data to the jffs2 partiton, defaults to \"0\"\n"
 809         "        -p <number>             write beginning at partition offset\n"
 810         "        -l <length>             the length of data that we want to dump\n");
 811         if (mtd_fixtrx) {
 812             fprintf(stderr,
 813         "        -o offset               offset of the image header in the partition(for fixtrx)\n");
 814         }
 815         if (mtd_fixtrx || mtd_fixseama || mtd_fixwrg || mtd_fixwrgg) {
 816                 fprintf(stderr,
 817         "        -c datasize             amount of data to be used for checksum calculation (for fixtrx / fixseama / fixwrg / fixwrgg)\n");
 818         }
 819         if (mtd_tpl_recoverflag_write) {
 820                 fprintf(stderr,
 821         "        -t <partition>          write TP-Link recovery-flag to <partition> (for write)\n");
 822         }
 823         fprintf(stderr,
 824 #ifdef FIS_SUPPORT
 825         "        -F <part>[:<size>[:<entrypoint>]][,<part>...]\n"
 826         "                                alter the fis partition table to create new partitions replacing\n"
 827         "                                the partitions provided as argument to the write command\n"
 828         "                                (only valid together with the write command)\n"
 829 #endif
 830         "\n"
 831         "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
 832         "         mtd -r write linux.trx linux\n\n");
 833         exit(1);
 834 }
 835
 836 static void do_reboot(void)
 837 {
 838         fprintf(stderr, "Rebooting ...\n");
 839         fflush(stderr);
 840
 841         /* try regular reboot method first */
 842         system("/sbin/reboot");
 843         sleep(2);
 844
 845         /* if we're still alive at this point, force the kernel to reboot */
 846         syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
 847 }
 848
 849 int main (int argc, char **argv)
 850 {
 851         int ch, i, boot, imagefd = 0, force, unlocked;
 852         char *erase[MAX_ARGS], *device = NULL;
 853         char *fis_layout = NULL;
 854         size_t offset = 0, data_size = 0, part_offset = 0, dump_len = 0;
 855         enum {
 856                 CMD_ERASE,
 857                 CMD_WRITE,
 858                 CMD_UNLOCK,
 859                 CMD_JFFS2WRITE,
 860                 CMD_FIXTRX,
 861                 CMD_FIXSEAMA,
 862                 CMD_FIXWRG,
 863                 CMD_FIXWRGG,
 864                 CMD_VERIFY,
 865                 CMD_DUMP,
 866                 CMD_RESETBC,
 867         } cmd = -1;
 868
 869         erase[0] = NULL;
 870         boot = 0;
 871         force = 0;
 872         buflen = 0;
 873         quiet = 0;
 874         no_erase = 0;
 875
 876         while ((ch = getopt(argc, argv,
 877 #ifdef FIS_SUPPORT
 878                         "F:"
 879 #endif
 880                         "frnqe:d:s:j:p:o:c:t:l:")) != -1)
 881                 switch (ch) {
 882                         case 'f':
 883                                 force = 1;
 884                                 break;
 885                         case 'r':
 886                                 boot = 1;
 887                                 break;
 888                         case 'n':
 889                                 no_erase = 1;
 890                                 break;
 891                         case 'j':
 892                                 jffs2file = optarg;
 893                                 break;
 894                         case 's':
 895                                 errno = 0;
 896                                 jffs2_skip_bytes = strtoul(optarg, 0, 0);
 897                                 if (errno) {
 898                                                 fprintf(stderr, "-s: illegal numeric string\n");
 899                                                 usage();
 900                                 }
 901                                 break;
 902                         case 'q':
 903                                 quiet++;
 904                                 break;
 905                         case 'e':
 906                                 i = 0;
 907                                 while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
 908                                         i++;
 909
 910                                 erase[i++] = optarg;
 911                                 erase[i] = NULL;
 912                                 break;
 913                         case 'd':
 914                                 jffs2dir = optarg;
 915                                 break;
 916                         case 'p':
 917                                 errno = 0;
 918                                 part_offset = strtoul(optarg, 0, 0);
 919                                 if (errno) {
 920                                         fprintf(stderr, "-p: illegal numeric string\n");
 921                                         usage();
 922                                 }
 923                                 break;
 924                         case 'l':
 925                                 errno = 0;
 926                                 dump_len = strtoul(optarg, 0, 0);
 927                                 if (errno) {
 928                                         fprintf(stderr, "-l: illegal numeric string\n");
 929                                         usage();
 930                                 }
 931                                 break;
 932                         case 'o':
 933                                 errno = 0;
 934                                 offset = strtoul(optarg, 0, 0);
 935                                 if (errno) {
 936                                         fprintf(stderr, "-o: illegal numeric string\n");
 937                                         usage();
 938                                 }
 939                                 break;
 940                         case 'c':
 941                                 errno = 0;
 942                                 data_size = strtoul(optarg, 0, 0);
 943                                 if (errno) {
 944                                         fprintf(stderr, "-c: illegal numeric string\n");
 945                                         usage();
 946                                 }
 947                                 break;
 948                         case 't':
 949                                 tpl_uboot_args_part = optarg;
 950                                 break;
 951 #ifdef FIS_SUPPORT
 952                         case 'F':
 953                                 fis_layout = optarg;
 954                                 break;
 955 #endif
 956                         case '?':
 957                         default:
 958                                 usage();
 959                 }
 960         argc -= optind;
 961         argv += optind;
 962
 963         if (argc < 2)
 964                 usage();
 965
 966         if ((strcmp(argv[0], "unlock") == 0) && (argc == 2)) {
 967                 cmd = CMD_UNLOCK;
 968                 device = argv[1];
 969         } else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
 970                 cmd = CMD_ERASE;
 971                 device = argv[1];
 972         } else if (((strcmp(argv[0], "resetbc") == 0) && (argc == 2)) && mtd_resetbc) {
 973                 cmd = CMD_RESETBC;
 974                 device = argv[1];
 975         } else if (((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) && mtd_fixtrx) {
 976                 cmd = CMD_FIXTRX;
 977                 device = argv[1];
 978         } else if (((strcmp(argv[0], "fixseama") == 0) && (argc == 2)) && mtd_fixseama) {
 979                 cmd = CMD_FIXSEAMA;
 980                 device = argv[1];
 981         } else if (((strcmp(argv[0], "fixwrg") == 0) && (argc == 2)) && mtd_fixwrg) {
 982                 cmd = CMD_FIXWRG;
 983                 device = argv[1];
 984         } else if (((strcmp(argv[0], "fixwrgg") == 0) && (argc == 2)) && mtd_fixwrgg) {
 985                 cmd = CMD_FIXWRGG;
 986                 device = argv[1];
 987         } else if ((strcmp(argv[0], "verify") == 0) && (argc == 3)) {
 988                 cmd = CMD_VERIFY;
 989                 imagefile = argv[1];
 990                 device = argv[2];
 991         } else if ((strcmp(argv[0], "dump") == 0) && (argc == 2)) {
 992                 cmd = CMD_DUMP;
 993                 device = argv[1];
 994         } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
 995                 cmd = CMD_WRITE;
 996                 device = argv[2];
 997
 998                 if (strcmp(argv[1], "-") == 0) {
 999                         imagefile = "<stdin>";
1000                         imagefd = 0;
1001                 } else {
1002                         imagefile = argv[1];
1003                         if ((imagefd = open(argv[1], O_RDONLY)) < 0) {
1004                                 fprintf(stderr, "Couldn't open image file: %s!\n", imagefile);
1005                                 exit(1);
1006                         }
1007                 }
1008
1009                 if (!mtd_check(device)) {
1010                         fprintf(stderr, "Can't open device for writing!\n");
1011                         exit(1);
1012                 }
1013                 /* check trx file before erasing or writing anything */
1014                 if (!image_check(imagefd, device) && !force) {
1015                         fprintf(stderr, "Image check failed.\n");
1016                         exit(1);
1017                 }
1018         } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) {
1019                 cmd = CMD_JFFS2WRITE;
1020                 device = argv[2];
1021
1022                 imagefile = argv[1];
1023                 if (!mtd_check(device)) {
1024                         fprintf(stderr, "Can't open device for writing!\n");
1025                         exit(1);
1026                 }
1027         } else {
1028                 usage();
1029         }
1030
1031         sync();
1032
1033         i = 0;
1034         unlocked = 0;
1035         while (erase[i] != NULL) {
1036                 mtd_unlock(erase[i]);
1037                 mtd_erase(erase[i]);
1038                 if (strcmp(erase[i], device) == 0)
1039                         unlocked = 1;
1040                 i++;
1041         }
1042
1043         switch (cmd) {
1044                 case CMD_UNLOCK:
1045                         if (!unlocked)
1046                                 mtd_unlock(device);
1047                         break;
1048                 case CMD_VERIFY:
1049                         mtd_verify(device, imagefile);
1050                         break;
1051                 case CMD_DUMP:
1052                         mtd_dump(device, offset, dump_len);
1053                         break;
1054                 case CMD_ERASE:
1055                         if (!unlocked)
1056                                 mtd_unlock(device);
1057                         mtd_erase(device);
1058                         break;
1059                 case CMD_WRITE:
1060                         if (!unlocked)
1061                                 mtd_unlock(device);
1062                         mtd_write(imagefd, device, fis_layout, part_offset);
1063                         break;
1064                 case CMD_JFFS2WRITE:
1065                         if (!unlocked)
1066                                 mtd_unlock(device);
1067                         mtd_write_jffs2(device, imagefile, jffs2dir);
1068                         break;
1069                 case CMD_FIXTRX:
1070                         if (mtd_fixtrx) {
1071                                 mtd_fixtrx(device, offset, data_size);
1072                         }
1073                         break;
1074                 case CMD_RESETBC:
1075                         if (mtd_resetbc) {
1076                                 mtd_resetbc(device);
1077                         }
1078                         break;
1079                 case CMD_FIXSEAMA:
1080                         if (mtd_fixseama)
1081                                 mtd_fixseama(device, 0, data_size);
1082                         break;
1083                 case CMD_FIXWRG:
1084                         if (mtd_fixwrg)
1085                                 mtd_fixwrg(device, 0, data_size);
1086                         break;
1087                 case CMD_FIXWRGG:
1088                         if (mtd_fixwrgg)
1089                                 mtd_fixwrgg(device, 0, data_size);
1090                         break;
1091         }
1092
1093         sync();
1094
1095         if (boot)
1096                 do_reboot();
1097
1098         return 0;
1099 }