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