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@openwrt.org>
   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 <limits.h>
  26 #include <unistd.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <stdint.h>
  30 #include <signal.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/syscall.h>
  33 #include <fcntl.h>
  34 #include <errno.h>
  35 #include <time.h>
  36 #include <string.h>
  37 #include <sys/ioctl.h>
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40 #include <sys/mount.h>
  41 #include <sys/stat.h>
  42 #include <sys/reboot.h>
  43 #include <linux/reboot.h>
  44 #include <mtd/mtd-user.h>
  45 #include "fis.h"
  46 #include "mtd.h"
  47
  48 #include <libubox/md5.h>
  49
  50 #define MAX_ARGS 8
  51 #define JFFS2_DEFAULT_DIR       "" /* directory name without /, empty means root dir */
  52
  53 static char *buf = NULL;
  54 static char *imagefile = NULL;
  55 static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
  56 static int buflen = 0;
  57 int quiet;
  58 int no_erase;
  59 int mtdsize = 0;
  60 int erasesize = 0;
  61 int jffs2_skip_bytes=0;
  62 int mtdtype = 0;
  63
  64 int mtd_open(const char *mtd, bool block)
  65 {
  66         FILE *fp;
  67         char dev[PATH_MAX];
  68         int i;
  69         int ret;
  70         int flags = O_RDWR | O_SYNC;
  71         char name[PATH_MAX];
  72
  73         snprintf(name, sizeof(name), "\"%s\"", mtd);
  74         if ((fp = fopen("/proc/mtd", "r"))) {
  75                 while (fgets(dev, sizeof(dev), fp)) {
  76                         if (sscanf(dev, "mtd%d:", &i) && strstr(dev, name)) {
  77                                 snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
  78                                 if ((ret=open(dev, flags))<0) {
  79                                         snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
  80                                         ret=open(dev, flags);
  81                                 }
  82                                 fclose(fp);
  83                                 return ret;
  84                         }
  85                 }
  86                 fclose(fp);
  87         }
  88
  89         return open(mtd, flags);
  90 }
  91
  92 int mtd_check_open(const char *mtd)
  93 {
  94         struct mtd_info_user mtdInfo;
  95         int fd;
  96
  97         fd = mtd_open(mtd, false);
  98         if(fd < 0) {
  99                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 100                 return -1;
 101         }
 102
 103         if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
 104                 fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
 105                 close(fd);
 106                 return -1;
 107         }
 108         mtdsize = mtdInfo.size;
 109         erasesize = mtdInfo.erasesize;
 110         mtdtype = mtdInfo.type;
 111
 112         return fd;
 113 }
 114
 115 int mtd_block_is_bad(int fd, int offset)
 116 {
 117         int r = 0;
 118         loff_t o = offset;
 119
 120         if (mtdtype == MTD_NANDFLASH)
 121         {
 122                 r = ioctl(fd, MEMGETBADBLOCK, &o);
 123                 if (r < 0)
 124                 {
 125                         fprintf(stderr, "Failed to get erase block status\n");
 126                         exit(1);
 127                 }
 128         }
 129         return r;
 130 }
 131
 132 int mtd_erase_block(int fd, int offset)
 133 {
 134         struct erase_info_user mtdEraseInfo;
 135
 136         mtdEraseInfo.start = offset;
 137         mtdEraseInfo.length = erasesize;
 138         ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
 139         if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0)
 140                 return -1;
 141
 142         return 0;
 143 }
 144
 145 int mtd_write_buffer(int fd, const char *buf, int offset, int length)
 146 {
 147         lseek(fd, offset, SEEK_SET);
 148         write(fd, buf, length);
 149         return 0;
 150 }
 151
 152
 153 static int
 154 image_check(int imagefd, const char *mtd)
 155 {
 156         int ret = 1;
 157         if (trx_check) {
 158           ret = trx_check(imagefd, mtd, buf, &buflen);
 159         }
 160
 161         return ret;
 162 }
 163
 164 static int mtd_check(const char *mtd)
 165 {
 166         char *next = NULL;
 167         char *str = NULL;
 168         int fd;
 169
 170         if (strchr(mtd, ':')) {
 171                 str = strdup(mtd);
 172                 mtd = str;
 173         }
 174
 175         do {
 176                 next = strchr(mtd, ':');
 177                 if (next) {
 178                         *next = 0;
 179                         next++;
 180                 }
 181
 182                 fd = mtd_check_open(mtd);
 183                 if (fd < 0)
 184                         return 0;
 185
 186                 if (!buf)
 187                         buf = malloc(erasesize);
 188
 189                 close(fd);
 190                 mtd = next;
 191         } while (next);
 192
 193         if (str)
 194                 free(str);
 195
 196         return 1;
 197 }
 198
 199 static int
 200 mtd_unlock(const char *mtd)
 201 {
 202         struct erase_info_user mtdLockInfo;
 203         char *next = NULL;
 204         char *str = NULL;
 205         int fd;
 206
 207         if (strchr(mtd, ':')) {
 208                 str = strdup(mtd);
 209                 mtd = str;
 210         }
 211
 212         do {
 213                 next = strchr(mtd, ':');
 214                 if (next) {
 215                         *next = 0;
 216                         next++;
 217                 }
 218
 219                 fd = mtd_check_open(mtd);
 220                 if(fd < 0) {
 221                         fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 222                         exit(1);
 223                 }
 224
 225                 if (quiet < 2)
 226                         fprintf(stderr, "Unlocking %s ...\n", mtd);
 227
 228                 mtdLockInfo.start = 0;
 229                 mtdLockInfo.length = mtdsize;
 230                 ioctl(fd, MEMUNLOCK, &mtdLockInfo);
 231                 close(fd);
 232                 mtd = next;
 233         } while (next);
 234
 235         if (str)
 236                 free(str);
 237
 238         return 0;
 239 }
 240
 241 static int
 242 mtd_erase(const char *mtd)
 243 {
 244         int fd;
 245         struct erase_info_user mtdEraseInfo;
 246
 247         if (quiet < 2)
 248                 fprintf(stderr, "Erasing %s ...\n", mtd);
 249
 250         fd = mtd_check_open(mtd);
 251         if(fd < 0) {
 252                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 253                 exit(1);
 254         }
 255
 256         mtdEraseInfo.length = erasesize;
 257
 258         for (mtdEraseInfo.start = 0;
 259                  mtdEraseInfo.start < mtdsize;
 260                  mtdEraseInfo.start += erasesize) {
 261                 if (mtd_block_is_bad(fd, mtdEraseInfo.start)) {
 262                         if (!quiet)
 263                                 fprintf(stderr, "\nSkipping bad block at 0x%x   ", mtdEraseInfo.start);
 264                 } else {
 265                         ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
 266                         if(ioctl(fd, MEMERASE, &mtdEraseInfo))
 267                                 fprintf(stderr, "Failed to erase block on %s at 0x%x\n", mtd, mtdEraseInfo.start);
 268                 }
 269         }
 270
 271         close(fd);
 272         return 0;
 273
 274 }
 275
 276 static int
 277 mtd_verify(const char *mtd, char *file)
 278 {
 279         uint32_t f_md5[4], m_md5[4];
 280         struct stat s;
 281         md5_ctx_t ctx;
 282         int ret = 0;
 283         int fd;
 284
 285         if (quiet < 2)
 286                 fprintf(stderr, "Verifying %s against %s ...\n", mtd, file);
 287
 288         if (stat(file, &s) || md5sum(file, f_md5)) {
 289                 fprintf(stderr, "Failed to hash %s\n", file);
 290                 return -1;
 291         }
 292
 293         fd = mtd_check_open(mtd);
 294         if(fd < 0) {
 295                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 296                 return -1;
 297         }
 298
 299         md5_begin(&ctx);
 300         do {
 301                 char buf[256];
 302                 int len = (s.st_size > sizeof(buf)) ? (sizeof(buf)) : (s.st_size);
 303                 int rlen = read(fd, buf, len);
 304
 305                 if (rlen < 0) {
 306                         if (errno == EINTR)
 307                                 continue;
 308                         ret = -1;
 309                         goto out;
 310                 }
 311                 if (!rlen)
 312                         break;
 313                 md5_hash(buf, rlen, &ctx);
 314                 s.st_size -= rlen;
 315         } while (s.st_size > 0);
 316
 317         md5_end(m_md5, &ctx);
 318
 319         fprintf(stderr, "%08x%08x%08x%08x - %s\n", m_md5[0], m_md5[1], m_md5[2], m_md5[3], mtd);
 320         fprintf(stderr, "%08x%08x%08x%08x - %s\n", f_md5[0], f_md5[1], f_md5[2], f_md5[3], file);
 321
 322         ret = memcmp(f_md5, m_md5, sizeof(m_md5));
 323         if (!ret)
 324                 fprintf(stderr, "Success\n");
 325         else
 326                 fprintf(stderr, "Failed\n");
 327
 328 out:
 329         close(fd);
 330         return ret;
 331 }
 332
 333 static void
 334 indicate_writing(const char *mtd)
 335 {
 336         if (quiet < 2)
 337                 fprintf(stderr, "\nWriting from %s to %s ... ", imagefile, mtd);
 338
 339         if (!quiet)
 340                 fprintf(stderr, " [ ]");
 341 }
 342
 343 static int
 344 mtd_write(int imagefd, const char *mtd, char *fis_layout, size_t part_offset)
 345 {
 346         char *next = NULL;
 347         char *str = NULL;
 348         int fd, result;
 349         ssize_t r, w, e;
 350         ssize_t skip = 0;
 351         uint32_t offset = 0;
 352         int jffs2_replaced = 0;
 353         int skip_bad_blocks = 0;
 354
 355 #ifdef FIS_SUPPORT
 356         static struct fis_part new_parts[MAX_ARGS];
 357         static struct fis_part old_parts[MAX_ARGS];
 358         int n_new = 0, n_old = 0;
 359
 360         if (fis_layout) {
 361                 const char *tmp = mtd;
 362                 char *word, *brkt;
 363                 int ret;
 364
 365                 memset(&old_parts, 0, sizeof(old_parts));
 366                 memset(&new_parts, 0, sizeof(new_parts));
 367
 368                 do {
 369                         next = strchr(tmp, ':');
 370                         if (!next)
 371                                 next = (char *) tmp + strlen(tmp);
 372
 373                         memcpy(old_parts[n_old].name, tmp, next - tmp);
 374
 375                         n_old++;
 376                         tmp = next + 1;
 377                 } while(*next);
 378
 379                 for (word = strtok_r(fis_layout, ",", &brkt);
 380                      word;
 381                          word = strtok_r(NULL, ",", &brkt)) {
 382
 383                         tmp = strtok(word, ":");
 384                         strncpy((char *) new_parts[n_new].name, tmp, sizeof(new_parts[n_new].name) - 1);
 385
 386                         tmp = strtok(NULL, ":");
 387                         if (!tmp)
 388                                 goto next;
 389
 390                         new_parts[n_new].size = strtoul(tmp, NULL, 0);
 391
 392                         tmp = strtok(NULL, ":");
 393                         if (!tmp)
 394                                 goto next;
 395
 396                         new_parts[n_new].loadaddr = strtoul(tmp, NULL, 16);
 397 next:
 398                         n_new++;
 399                 }
 400                 ret = fis_validate(old_parts, n_old, new_parts, n_new);
 401                 if (ret < 0) {
 402                         fprintf(stderr, "Failed to validate the new FIS partition table\n");
 403                         exit(1);
 404                 }
 405                 if (ret == 0)
 406                         fis_layout = NULL;
 407         }
 408 #endif
 409
 410         if (strchr(mtd, ':')) {
 411                 str = strdup(mtd);
 412                 mtd = str;
 413         }
 414
 415         r = 0;
 416
 417 resume:
 418         next = strchr(mtd, ':');
 419         if (next) {
 420                 *next = 0;
 421                 next++;
 422         }
 423
 424         fd = mtd_check_open(mtd);
 425         if(fd < 0) {
 426                 fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 427                 exit(1);
 428         }
 429         if (part_offset > 0) {
 430                 fprintf(stderr, "Seeking on mtd device '%s' to: %zu\n", mtd, part_offset);
 431                 lseek(fd, part_offset, SEEK_SET);
 432         }
 433
 434         indicate_writing(mtd);
 435
 436         w = e = 0;
 437         for (;;) {
 438                 /* buffer may contain data already (from trx check or last mtd partition write attempt) */
 439                 while (buflen < erasesize) {
 440                         r = read(imagefd, buf + buflen, erasesize - buflen);
 441                         if (r < 0) {
 442                                 if ((errno == EINTR) || (errno == EAGAIN))
 443                                         continue;
 444                                 else {
 445                                         perror("read");
 446                                         break;
 447                                 }
 448                         }
 449
 450                         if (r == 0)
 451                                 break;
 452
 453                         buflen += r;
 454                 }
 455
 456                 if (buflen == 0)
 457                         break;
 458
 459                 if (buflen < erasesize) {
 460                         /* Pad block to eraseblock size */
 461                         memset(&buf[buflen], 0xff, erasesize - buflen);
 462                         buflen = erasesize;
 463                 }
 464
 465                 if (skip > 0) {
 466                         skip -= buflen;
 467                         buflen = 0;
 468                         if (skip <= 0)
 469                                 indicate_writing(mtd);
 470
 471                         continue;
 472                 }
 473
 474                 if (jffs2file && w >= jffs2_skip_bytes) {
 475                         if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF) - 1) == 0) {
 476                                 if (!quiet)
 477                                         fprintf(stderr, "\b\b\b   ");
 478                                 if (quiet < 2)
 479                                         fprintf(stderr, "\nAppending jffs2 data from %s to %s...", jffs2file, mtd);
 480                                 /* got an EOF marker - this is the place to add some jffs2 data */
 481                                 skip = mtd_replace_jffs2(mtd, fd, e, jffs2file);
 482                                 jffs2_replaced = 1;
 483
 484                                 /* don't add it again */
 485                                 jffs2file = NULL;
 486
 487                                 w += skip;
 488                                 e += skip;
 489                                 skip -= buflen;
 490                                 buflen = 0;
 491                                 offset = 0;
 492                                 continue;
 493                         }
 494                         /* no EOF marker, make sure we figure out the last inode number
 495                          * before appending some data */
 496                         mtd_parse_jffs2data(buf, jffs2dir);
 497                 }
 498
 499                 /* need to erase the next block before writing data to it */
 500                 if(!no_erase)
 501                 {
 502                         while (w + buflen > e - skip_bad_blocks) {
 503                                 if (!quiet)
 504                                         fprintf(stderr, "\b\b\b[e]");
 505
 506                                 if (mtd_block_is_bad(fd, e)) {
 507                                         if (!quiet)
 508                                                 fprintf(stderr, "\nSkipping bad block at 0x%08x   ", e);
 509
 510                                         skip_bad_blocks += erasesize;
 511                                         e += erasesize;
 512
 513                                         // Move the file pointer along over the bad block.
 514                                         lseek(fd, erasesize, SEEK_CUR);
 515                                         continue;
 516                                 }
 517
 518                                 if (mtd_erase_block(fd, e) < 0) {
 519                                         if (next) {
 520                                                 if (w < e) {
 521                                                         write(fd, buf + offset, e - w);
 522                                                         offset = e - w;
 523                                                 }
 524                                                 w = 0;
 525                                                 e = 0;
 526                                                 close(fd);
 527                                                 mtd = next;
 528                                                 fprintf(stderr, "\b\b\b   \n");
 529                                                 goto resume;
 530                                         } else {
 531                                                 fprintf(stderr, "Failed to erase block\n");
 532                                                 exit(1);
 533                                         }
 534                                 }
 535
 536                                 /* erase the chunk */
 537                                 e += erasesize;
 538                         }
 539                 }
 540
 541                 if (!quiet)
 542                         fprintf(stderr, "\b\b\b[w]");
 543
 544                 if ((result = write(fd, buf + offset, buflen)) < buflen) {
 545                         if (result < 0) {
 546                                 fprintf(stderr, "Error writing image.\n");
 547                                 exit(1);
 548                         } else {
 549                                 fprintf(stderr, "Insufficient space.\n");
 550                                 exit(1);
 551                         }
 552                 }
 553                 w += buflen;
 554
 555                 buflen = 0;
 556                 offset = 0;
 557         }
 558
 559         if (jffs2_replaced && trx_fixup) {
 560                 trx_fixup(fd, mtd);
 561         }
 562
 563         if (!quiet)
 564                 fprintf(stderr, "\b\b\b\b    ");
 565
 566 done:
 567         if (quiet < 2)
 568                 fprintf(stderr, "\n");
 569
 570 #ifdef FIS_SUPPORT
 571         if (fis_layout) {
 572                 if (fis_remap(old_parts, n_old, new_parts, n_new) < 0)
 573                         fprintf(stderr, "Failed to update the FIS partition table\n");
 574         }
 575 #endif
 576
 577         close(fd);
 578         return 0;
 579 }
 580
 581 static void usage(void)
 582 {
 583         fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>[:<device>...]\n\n"
 584         "The device is in the format of mtdX (eg: mtd4) or its label.\n"
 585         "mtd recognizes these commands:\n"
 586         "        unlock                  unlock the device\n"
 587         "        refresh                 refresh mtd partition\n"
 588         "        erase                   erase all data on device\n"
 589         "        verify <imagefile>|-    verify <imagefile> (use - for stdin) to device\n"
 590         "        write <imagefile>|-     write <imagefile> (use - for stdin) to device\n"
 591         "        jffs2write <file>       append <file> to the jffs2 partition on the device\n");
 592         if (mtd_fixtrx) {
 593             fprintf(stderr,
 594         "        fixtrx                  fix the checksum in a trx header on first boot\n");
 595         }
 596         if (mtd_fixseama) {
 597             fprintf(stderr,
 598         "        fixseama                fix the checksum in a seama header on first boot\n");
 599         }
 600     fprintf(stderr,
 601         "Following options are available:\n"
 602         "        -q                      quiet mode (once: no [w] on writing,\n"
 603         "                                           twice: no status messages)\n"
 604         "        -n                      write without first erasing the blocks\n"
 605         "        -r                      reboot after successful command\n"
 606         "        -f                      force write without trx checks\n"
 607         "        -e <device>             erase <device> before executing the command\n"
 608         "        -d <name>               directory for jffs2write, defaults to \"tmp\"\n"
 609         "        -j <name>               integrate <file> into jffs2 data when writing an image\n"
 610         "        -s <number>             skip the first n bytes when appending data to the jffs2 partiton, defaults to \"0\"\n"
 611         "        -p                      write beginning at partition offset\n");
 612         if (mtd_fixtrx) {
 613             fprintf(stderr,
 614         "        -o offset               offset of the image header in the partition(for fixtrx)\n");
 615     }
 616         fprintf(stderr,
 617 #ifdef FIS_SUPPORT
 618         "        -F <part>[:<size>[:<entrypoint>]][,<part>...]\n"
 619         "                                alter the fis partition table to create new partitions replacing\n"
 620         "                                the partitions provided as argument to the write command\n"
 621         "                                (only valid together with the write command)\n"
 622 #endif
 623         "\n"
 624         "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
 625         "         mtd -r write linux.trx linux\n\n");
 626         exit(1);
 627 }
 628
 629 static void do_reboot(void)
 630 {
 631         fprintf(stderr, "Rebooting ...\n");
 632         fflush(stderr);
 633
 634         /* try regular reboot method first */
 635         system("/sbin/reboot");
 636         sleep(2);
 637
 638         /* if we're still alive at this point, force the kernel to reboot */
 639         syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
 640 }
 641
 642 int main (int argc, char **argv)
 643 {
 644         int ch, i, boot, imagefd = 0, force, unlocked;
 645         char *erase[MAX_ARGS], *device = NULL;
 646         char *fis_layout = NULL;
 647         size_t offset = 0, part_offset = 0;
 648         enum {
 649                 CMD_ERASE,
 650                 CMD_WRITE,
 651                 CMD_UNLOCK,
 652                 CMD_JFFS2WRITE,
 653                 CMD_FIXTRX,
 654                 CMD_FIXSEAMA,
 655                 CMD_VERIFY,
 656         } cmd = -1;
 657
 658         erase[0] = NULL;
 659         boot = 0;
 660         force = 0;
 661         buflen = 0;
 662         quiet = 0;
 663         no_erase = 0;
 664
 665         while ((ch = getopt(argc, argv,
 666 #ifdef FIS_SUPPORT
 667                         "F:"
 668 #endif
 669                         "frnqe:d:s:j:p:o:")) != -1)
 670                 switch (ch) {
 671                         case 'f':
 672                                 force = 1;
 673                                 break;
 674                         case 'r':
 675                                 boot = 1;
 676                                 break;
 677                         case 'n':
 678                                 no_erase = 1;
 679                                 break;
 680                         case 'j':
 681                                 jffs2file = optarg;
 682                                 break;
 683                         case 's':
 684                                 errno = 0;
 685                                 jffs2_skip_bytes = strtoul(optarg, 0, 0);
 686                                 if (errno) {
 687                                                 fprintf(stderr, "-s: illegal numeric string\n");
 688                                                 usage();
 689                                 }
 690                                 break;
 691                         case 'q':
 692                                 quiet++;
 693                                 break;
 694                         case 'e':
 695                                 i = 0;
 696                                 while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
 697                                         i++;
 698
 699                                 erase[i++] = optarg;
 700                                 erase[i] = NULL;
 701                                 break;
 702                         case 'd':
 703                                 jffs2dir = optarg;
 704                                 break;
 705                         case 'p':
 706                                 errno = 0;
 707                                 part_offset = strtoul(optarg, 0, 0);
 708                                 if (errno) {
 709                                         fprintf(stderr, "-p: illegal numeric string\n");
 710                                         usage();
 711                                 }
 712                                 break;
 713                         case 'o':
 714                                 if (!mtd_fixtrx) {
 715                                         fprintf(stderr, "-o: is not available on this platform\n");
 716                                         usage();
 717                                 }
 718                                 errno = 0;
 719                                 offset = strtoul(optarg, 0, 0);
 720                                 if (errno) {
 721                                         fprintf(stderr, "-o: illegal numeric string\n");
 722                                         usage();
 723                                 }
 724                                 break;
 725 #ifdef FIS_SUPPORT
 726                         case 'F':
 727                                 fis_layout = optarg;
 728                                 break;
 729 #endif
 730                         case '?':
 731                         default:
 732                                 usage();
 733                 }
 734         argc -= optind;
 735         argv += optind;
 736
 737         if (argc < 2)
 738                 usage();
 739
 740         if ((strcmp(argv[0], "unlock") == 0) && (argc == 2)) {
 741                 cmd = CMD_UNLOCK;
 742                 device = argv[1];
 743         } else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
 744                 cmd = CMD_ERASE;
 745                 device = argv[1];
 746         } else if (((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) && mtd_fixtrx) {
 747                 cmd = CMD_FIXTRX;
 748                 device = argv[1];
 749         } else if (((strcmp(argv[0], "fixseama") == 0) && (argc == 2)) && mtd_fixseama) {
 750                 cmd = CMD_FIXSEAMA;
 751                 device = argv[1];
 752         } else if ((strcmp(argv[0], "verify") == 0) && (argc == 3)) {
 753                 cmd = CMD_VERIFY;
 754                 imagefile = argv[1];
 755                 device = argv[2];
 756         } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
 757                 cmd = CMD_WRITE;
 758                 device = argv[2];
 759
 760                 if (strcmp(argv[1], "-") == 0) {
 761                         imagefile = "<stdin>";
 762                         imagefd = 0;
 763                 } else {
 764                         imagefile = argv[1];
 765                         if ((imagefd = open(argv[1], O_RDONLY)) < 0) {
 766                                 fprintf(stderr, "Couldn't open image file: %s!\n", imagefile);
 767                                 exit(1);
 768                         }
 769                 }
 770
 771                 if (!mtd_check(device)) {
 772                         fprintf(stderr, "Can't open device for writing!\n");
 773                         exit(1);
 774                 }
 775                 /* check trx file before erasing or writing anything */
 776                 if (!image_check(imagefd, device) && !force) {
 777                         fprintf(stderr, "Image check failed.\n");
 778                         exit(1);
 779                 }
 780         } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) {
 781                 cmd = CMD_JFFS2WRITE;
 782                 device = argv[2];
 783
 784                 imagefile = argv[1];
 785                 if (!mtd_check(device)) {
 786                         fprintf(stderr, "Can't open device for writing!\n");
 787                         exit(1);
 788                 }
 789         } else {
 790                 usage();
 791         }
 792
 793         sync();
 794
 795         i = 0;
 796         unlocked = 0;
 797         while (erase[i] != NULL) {
 798                 mtd_unlock(erase[i]);
 799                 mtd_erase(erase[i]);
 800                 if (strcmp(erase[i], device) == 0)
 801                         unlocked = 1;
 802                 i++;
 803         }
 804
 805         switch (cmd) {
 806                 case CMD_UNLOCK:
 807                         if (!unlocked)
 808                                 mtd_unlock(device);
 809                         break;
 810                 case CMD_VERIFY:
 811                         mtd_verify(device, imagefile);
 812                         break;
 813                 case CMD_ERASE:
 814                         if (!unlocked)
 815                                 mtd_unlock(device);
 816                         mtd_erase(device);
 817                         break;
 818                 case CMD_WRITE:
 819                         if (!unlocked)
 820                                 mtd_unlock(device);
 821                         mtd_write(imagefd, device, fis_layout, part_offset);
 822                         break;
 823                 case CMD_JFFS2WRITE:
 824                         if (!unlocked)
 825                                 mtd_unlock(device);
 826                         mtd_write_jffs2(device, imagefile, jffs2dir);
 827                         break;
 828                 case CMD_FIXTRX:
 829                     if (mtd_fixtrx) {
 830                             mtd_fixtrx(device, offset);
 831             }
 832                 case CMD_FIXSEAMA:
 833                         if (mtd_fixseama)
 834                             mtd_fixseama(device, 0);
 835                         break;
 836         }
 837
 838         sync();
 839
 840         if (boot)
 841                 do_reboot();
 842
 843         return 0;
 844 }