tools/mkimage.c

   1 /*
   2  * (C) Copyright 2008 Semihalf
   3  *
   4  * (C) Copyright 2000-2009
   5  * DENX Software Engineering
   6  * Wolfgang Denk, wd@denx.de
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include "mkimage.h"
  25 #include <image.h>
  26 #include <version.h>
  27
  28 static void copy_file(int, const char *, int);
  29 static void usage(void);
  30
  31 /* image_type_params link list to maintain registered image type supports */
  32 struct image_type_params *mkimage_tparams = NULL;
  33
  34 /* parameters initialized by core will be used by the image type code */
  35 struct mkimage_params params = {
  36         .os = IH_OS_LINUX,
  37         .arch = IH_ARCH_PPC,
  38         .type = IH_TYPE_KERNEL,
  39         .comp = IH_COMP_GZIP,
  40         .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
  41         .imagename = "",
  42 };
  43
  44 /*
  45  * mkimage_register -
  46  *
  47  * It is used to register respective image generation/list support to the
  48  * mkimage core
  49  *
  50  * the input struct image_type_params is checked and appended to the link
  51  * list, if the input structure is already registered, error
  52  */
  53 void mkimage_register (struct image_type_params *tparams)
  54 {
  55         struct image_type_params **tp;
  56
  57         if (!tparams) {
  58                 fprintf (stderr, "%s: %s: Null input\n",
  59                         params.cmdname, __FUNCTION__);
  60                 exit (EXIT_FAILURE);
  61         }
  62
  63         /* scan the linked list, check for registry and point the last one */
  64         for (tp = &mkimage_tparams; *tp != NULL; tp = &(*tp)->next) {
  65                 if (!strcmp((*tp)->name, tparams->name)) {
  66                         fprintf (stderr, "%s: %s already registered\n",
  67                                 params.cmdname, tparams->name);
  68                         return;
  69                 }
  70         }
  71
  72         /* add input struct entry at the end of link list */
  73         *tp = tparams;
  74         /* mark input entry as last entry in the link list */
  75         tparams->next = NULL;
  76
  77         debug ("Registered %s\n", tparams->name);
  78 }
  79
  80 /*
  81  * mkimage_get_type -
  82  *
  83  * It scans all registers image type supports
  84  * checks the input type_id for each supported image type
  85  *
  86  * if successful,
  87  *      returns respective image_type_params pointer if success
  88  * if input type_id is not supported by any of image_type_support
  89  *      returns NULL
  90  */
  91 struct image_type_params *mkimage_get_type(int type)
  92 {
  93         struct image_type_params *curr;
  94
  95         for (curr = mkimage_tparams; curr != NULL; curr = curr->next) {
  96                 if (curr->check_image_type) {
  97                         if (!curr->check_image_type (type))
  98                                 return curr;
  99                 }
 100         }
 101         return NULL;
 102 }
 103
 104 /*
 105  * mkimage_verify_print_header -
 106  *
 107  * It scans mkimage_tparams link list,
 108  * verifies image_header for each supported image type
 109  * if verification is successful, prints respective header
 110  *
 111  * returns negative if input image format does not match with any of
 112  * supported image types
 113  */
 114 int mkimage_verify_print_header (void *ptr, struct stat *sbuf)
 115 {
 116         int retval = -1;
 117         struct image_type_params *curr;
 118
 119         for (curr = mkimage_tparams; curr != NULL; curr = curr->next ) {
 120                 if (curr->verify_header) {
 121                         retval = curr->verify_header (
 122                                 (unsigned char *)ptr, sbuf->st_size,
 123                                 &params);
 124
 125                         if (retval == 0) {
 126                                 /*
 127                                  * Print the image information
 128                                  * if verify is successful
 129                                  */
 130                                 if (curr->print_header)
 131                                         curr->print_header (ptr);
 132                                 else {
 133                                         fprintf (stderr,
 134                                         "%s: print_header undefined for %s\n",
 135                                         params.cmdname, curr->name);
 136                                 }
 137                                 break;
 138                         }
 139                 }
 140         }
 141         return retval;
 142 }
 143
 144 int
 145 main (int argc, char **argv)
 146 {
 147         int ifd = -1;
 148         struct stat sbuf;
 149         char *ptr;
 150         int retval = 0;
 151         struct image_type_params *tparams = NULL;
 152
 153         /* Init Kirkwood Boot image generation/list support */
 154         init_kwb_image_type ();
 155         /* Init Freescale imx Boot image generation/list support */
 156         init_imx_image_type ();
 157         /* Init FIT image generation/list support */
 158         init_fit_image_type ();
 159         /* Init TI OMAP Boot image generation/list support */
 160         init_omap_image_type();
 161         /* Init Default image generation/list support */
 162         init_default_image_type ();
 163         /* Init Davinci UBL support */
 164         init_ubl_image_type();
 165
 166         params.cmdname = *argv;
 167         params.addr = params.ep = 0;
 168
 169         while (--argc > 0 && **++argv == '-') {
 170                 while (*++*argv) {
 171                         switch (**argv) {
 172                         case 'l':
 173                                 params.lflag = 1;
 174                                 break;
 175                         case 'A':
 176                                 if ((--argc <= 0) ||
 177                                         (params.arch =
 178                                         genimg_get_arch_id (*++argv)) < 0)
 179                                         usage ();
 180                                 goto NXTARG;
 181                         case 'C':
 182                                 if ((--argc <= 0) ||
 183                                         (params.comp =
 184                                         genimg_get_comp_id (*++argv)) < 0)
 185                                         usage ();
 186                                 goto NXTARG;
 187                         case 'D':
 188                                 if (--argc <= 0)
 189                                         usage ();
 190                                 params.dtc = *++argv;
 191                                 goto NXTARG;
 192
 193                         case 'O':
 194                                 if ((--argc <= 0) ||
 195                                         (params.os =
 196                                         genimg_get_os_id (*++argv)) < 0)
 197                                         usage ();
 198                                 goto NXTARG;
 199                         case 'T':
 200                                 if ((--argc <= 0) ||
 201                                         (params.type =
 202                                         genimg_get_type_id (*++argv)) < 0)
 203                                         usage ();
 204                                 goto NXTARG;
 205
 206                         case 'a':
 207                                 if (--argc <= 0)
 208                                         usage ();
 209                                 params.addr = strtoul (*++argv, &ptr, 16);
 210                                 if (*ptr) {
 211                                         fprintf (stderr,
 212                                                 "%s: invalid load address %s\n",
 213                                                 params.cmdname, *argv);
 214                                         exit (EXIT_FAILURE);
 215                                 }
 216                                 goto NXTARG;
 217                         case 'd':
 218                                 if (--argc <= 0)
 219                                         usage ();
 220                                 params.datafile = *++argv;
 221                                 params.dflag = 1;
 222                                 goto NXTARG;
 223                         case 'e':
 224                                 if (--argc <= 0)
 225                                         usage ();
 226                                 params.ep = strtoul (*++argv, &ptr, 16);
 227                                 if (*ptr) {
 228                                         fprintf (stderr,
 229                                                 "%s: invalid entry point %s\n",
 230                                                 params.cmdname, *argv);
 231                                         exit (EXIT_FAILURE);
 232                                 }
 233                                 params.eflag = 1;
 234                                 goto NXTARG;
 235                         case 'f':
 236                                 if (--argc <= 0)
 237                                         usage ();
 238                                 /*
 239                                  * The flattened image tree (FIT) format
 240                                  * requires a flattened device tree image type
 241                                  */
 242                                 params.type = IH_TYPE_FLATDT;
 243                                 params.datafile = *++argv;
 244                                 params.fflag = 1;
 245                                 goto NXTARG;
 246                         case 'n':
 247                                 if (--argc <= 0)
 248                                         usage ();
 249                                 params.imagename = *++argv;
 250                                 goto NXTARG;
 251                         case 's':
 252                                 params.skipcpy = 1;
 253                                 break;
 254                         case 'v':
 255                                 params.vflag++;
 256                                 break;
 257                         case 'V':
 258                                 printf("mkimage version %s\n", PLAIN_VERSION);
 259                                 exit(EXIT_SUCCESS);
 260                         case 'x':
 261                                 params.xflag++;
 262                                 break;
 263                         default:
 264                                 usage ();
 265                         }
 266                 }
 267 NXTARG:         ;
 268         }
 269
 270         if (argc != 1)
 271                 usage ();
 272
 273         /* set tparams as per input type_id */
 274         tparams = mkimage_get_type(params.type);
 275         if (tparams == NULL) {
 276                 fprintf (stderr, "%s: unsupported type %s\n",
 277                         params.cmdname, genimg_get_type_name(params.type));
 278                 exit (EXIT_FAILURE);
 279         }
 280
 281         /*
 282          * check the passed arguments parameters meets the requirements
 283          * as per image type to be generated/listed
 284          */
 285         if (tparams->check_params)
 286                 if (tparams->check_params (&params))
 287                         usage ();
 288
 289         if (!params.eflag) {
 290                 params.ep = params.addr;
 291                 /* If XIP, entry point must be after the U-Boot header */
 292                 if (params.xflag)
 293                         params.ep += tparams->header_size;
 294         }
 295
 296         params.imagefile = *argv;
 297
 298         if (params.fflag){
 299                 if (tparams->fflag_handle)
 300                         /*
 301                          * in some cases, some additional processing needs
 302                          * to be done if fflag is defined
 303                          *
 304                          * For ex. fit_handle_file for Fit file support
 305                          */
 306                         retval = tparams->fflag_handle(&params);
 307
 308                 if (retval != EXIT_SUCCESS)
 309                         exit (retval);
 310         }
 311
 312         if (params.lflag || params.fflag) {
 313                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 314         } else {
 315                 ifd = open (params.imagefile,
 316                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 317         }
 318
 319         if (ifd < 0) {
 320                 fprintf (stderr, "%s: Can't open %s: %s\n",
 321                         params.cmdname, params.imagefile,
 322                         strerror(errno));
 323                 exit (EXIT_FAILURE);
 324         }
 325
 326         if (params.lflag || params.fflag) {
 327                 /*
 328                  * list header information of existing image
 329                  */
 330                 if (fstat(ifd, &sbuf) < 0) {
 331                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 332                                 params.cmdname, params.imagefile,
 333                                 strerror(errno));
 334                         exit (EXIT_FAILURE);
 335                 }
 336
 337                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 338                         fprintf (stderr,
 339                                 "%s: Bad size: \"%s\" is not valid image\n",
 340                                 params.cmdname, params.imagefile);
 341                         exit (EXIT_FAILURE);
 342                 }
 343
 344                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 345                 if (ptr == MAP_FAILED) {
 346                         fprintf (stderr, "%s: Can't read %s: %s\n",
 347                                 params.cmdname, params.imagefile,
 348                                 strerror(errno));
 349                         exit (EXIT_FAILURE);
 350                 }
 351
 352                 /*
 353                  * scan through mkimage registry for all supported image types
 354                  * and verify the input image file header for match
 355                  * Print the image information for matched image type
 356                  * Returns the error code if not matched
 357                  */
 358                 retval = mkimage_verify_print_header (ptr, &sbuf);
 359
 360                 (void) munmap((void *)ptr, sbuf.st_size);
 361                 (void) close (ifd);
 362
 363                 exit (retval);
 364         }
 365
 366         /*
 367          * In case there an header with a variable
 368          * length will be added, the corresponding
 369          * function is called. This is responsible to
 370          * allocate memory for the header itself.
 371          */
 372         if (tparams->vrec_header)
 373                 tparams->vrec_header(&params, tparams);
 374         else
 375                 memset(tparams->hdr, 0, tparams->header_size);
 376
 377         if (write(ifd, tparams->hdr, tparams->header_size)
 378                                         != tparams->header_size) {
 379                 fprintf (stderr, "%s: Write error on %s: %s\n",
 380                         params.cmdname, params.imagefile, strerror(errno));
 381                 exit (EXIT_FAILURE);
 382         }
 383
 384         if (!params.skipcpy &&
 385                 (params.type == IH_TYPE_MULTI ||
 386                         params.type == IH_TYPE_SCRIPT)) {
 387                 char *file = params.datafile;
 388                 uint32_t size;
 389
 390                 for (;;) {
 391                         char *sep = NULL;
 392
 393                         if (file) {
 394                                 if ((sep = strchr(file, ':')) != NULL) {
 395                                         *sep = '\0';
 396                                 }
 397
 398                                 if (stat (file, &sbuf) < 0) {
 399                                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 400                                                 params.cmdname, file, strerror(errno));
 401                                         exit (EXIT_FAILURE);
 402                                 }
 403                                 size = cpu_to_uimage (sbuf.st_size);
 404                         } else {
 405                                 size = 0;
 406                         }
 407
 408                         if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 409                                 fprintf (stderr, "%s: Write error on %s: %s\n",
 410                                         params.cmdname, params.imagefile,
 411                                         strerror(errno));
 412                                 exit (EXIT_FAILURE);
 413                         }
 414
 415                         if (!file) {
 416                                 break;
 417                         }
 418
 419                         if (sep) {
 420                                 *sep = ':';
 421                                 file = sep + 1;
 422                         } else {
 423                                 file = NULL;
 424                         }
 425                 }
 426
 427                 file = params.datafile;
 428
 429                 for (;;) {
 430                         char *sep = strchr(file, ':');
 431                         if (sep) {
 432                                 *sep = '\0';
 433                                 copy_file (ifd, file, 1);
 434                                 *sep++ = ':';
 435                                 file = sep;
 436                         } else {
 437                                 copy_file (ifd, file, 0);
 438                                 break;
 439                         }
 440                 }
 441         } else {
 442                 copy_file (ifd, params.datafile, 0);
 443         }
 444
 445         /* We're a bit of paranoid */
 446 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 447    !defined(__sun__) && \
 448    !defined(__FreeBSD__) && \
 449    !defined(__APPLE__)
 450         (void) fdatasync (ifd);
 451 #else
 452         (void) fsync (ifd);
 453 #endif
 454
 455         if (fstat(ifd, &sbuf) < 0) {
 456                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 457                         params.cmdname, params.imagefile, strerror(errno));
 458                 exit (EXIT_FAILURE);
 459         }
 460
 461         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 462         if (ptr == MAP_FAILED) {
 463                 fprintf (stderr, "%s: Can't map %s: %s\n",
 464                         params.cmdname, params.imagefile, strerror(errno));
 465                 exit (EXIT_FAILURE);
 466         }
 467
 468         /* Setup the image header as per input image type*/
 469         if (tparams->set_header)
 470                 tparams->set_header (ptr, &sbuf, ifd, &params);
 471         else {
 472                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 473                         params.cmdname, tparams->name, strerror(errno));
 474                 exit (EXIT_FAILURE);
 475         }
 476
 477         /* Print the image information by processing image header */
 478         if (tparams->print_header)
 479                 tparams->print_header (ptr);
 480         else {
 481                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 482                         params.cmdname, tparams->name, strerror(errno));
 483                 exit (EXIT_FAILURE);
 484         }
 485
 486         (void) munmap((void *)ptr, sbuf.st_size);
 487
 488         /* We're a bit of paranoid */
 489 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 490    !defined(__sun__) && \
 491    !defined(__FreeBSD__) && \
 492    !defined(__APPLE__)
 493         (void) fdatasync (ifd);
 494 #else
 495         (void) fsync (ifd);
 496 #endif
 497
 498         if (close(ifd)) {
 499                 fprintf (stderr, "%s: Write error on %s: %s\n",
 500                         params.cmdname, params.imagefile, strerror(errno));
 501                 exit (EXIT_FAILURE);
 502         }
 503
 504         exit (EXIT_SUCCESS);
 505 }
 506
 507 static void
 508 copy_file (int ifd, const char *datafile, int pad)
 509 {
 510         int dfd;
 511         struct stat sbuf;
 512         unsigned char *ptr;
 513         int tail;
 514         int zero = 0;
 515         int offset = 0;
 516         int size;
 517         struct image_type_params *tparams = mkimage_get_type (params.type);
 518
 519         if (params.vflag) {
 520                 fprintf (stderr, "Adding Image %s\n", datafile);
 521         }
 522
 523         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 524                 fprintf (stderr, "%s: Can't open %s: %s\n",
 525                         params.cmdname, datafile, strerror(errno));
 526                 exit (EXIT_FAILURE);
 527         }
 528
 529         if (fstat(dfd, &sbuf) < 0) {
 530                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 531                         params.cmdname, datafile, strerror(errno));
 532                 exit (EXIT_FAILURE);
 533         }
 534
 535         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 536         if (ptr == MAP_FAILED) {
 537                 fprintf (stderr, "%s: Can't read %s: %s\n",
 538                         params.cmdname, datafile, strerror(errno));
 539                 exit (EXIT_FAILURE);
 540         }
 541
 542         if (params.xflag) {
 543                 unsigned char *p = NULL;
 544                 /*
 545                  * XIP: do not append the image_header_t at the
 546                  * beginning of the file, but consume the space
 547                  * reserved for it.
 548                  */
 549
 550                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 551                         fprintf (stderr,
 552                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 553                                 params.cmdname, datafile);
 554                         exit (EXIT_FAILURE);
 555                 }
 556
 557                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 558                         if ( *p != 0xff ) {
 559                                 fprintf (stderr,
 560                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 561                                         params.cmdname, datafile);
 562                                 exit (EXIT_FAILURE);
 563                         }
 564                 }
 565
 566                 offset = tparams->header_size;
 567         }
 568
 569         size = sbuf.st_size - offset;
 570         if (write(ifd, ptr + offset, size) != size) {
 571                 fprintf (stderr, "%s: Write error on %s: %s\n",
 572                         params.cmdname, params.imagefile, strerror(errno));
 573                 exit (EXIT_FAILURE);
 574         }
 575
 576         if (pad && ((tail = size % 4) != 0)) {
 577
 578                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 579                         fprintf (stderr, "%s: Write error on %s: %s\n",
 580                                 params.cmdname, params.imagefile,
 581                                 strerror(errno));
 582                         exit (EXIT_FAILURE);
 583                 }
 584         }
 585
 586         (void) munmap((void *)ptr, sbuf.st_size);
 587         (void) close (dfd);
 588 }
 589
 590 void
 591 usage ()
 592 {
 593         fprintf (stderr, "Usage: %s -l image\n"
 594                          "          -l ==> list image header information\n",
 595                 params.cmdname);
 596         fprintf (stderr, "       %s [-x] -A arch -O os -T type -C comp "
 597                          "-a addr -e ep -n name -d data_file[:data_file...] image\n"
 598                          "          -A ==> set architecture to 'arch'\n"
 599                          "          -O ==> set operating system to 'os'\n"
 600                          "          -T ==> set image type to 'type'\n"
 601                          "          -C ==> set compression type 'comp'\n"
 602                          "          -a ==> set load address to 'addr' (hex)\n"
 603                          "          -e ==> set entry point to 'ep' (hex)\n"
 604                          "          -n ==> set image name to 'name'\n"
 605                          "          -d ==> use image data from 'datafile'\n"
 606                          "          -x ==> set XIP (execute in place)\n",
 607                 params.cmdname);
 608         fprintf (stderr, "       %s [-D dtc_options] -f fit-image.its fit-image\n",
 609                 params.cmdname);
 610         fprintf (stderr, "       %s -V ==> print version information and exit\n",
 611                 params.cmdname);
 612
 613         exit (EXIT_FAILURE);
 614 }