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  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include "mkimage.h"
  12 #include <image.h>
  13 #include <version.h>
  14
  15 static void copy_file(int, const char *, int);
  16 static void usage(void);
  17
  18 /* image_type_params link list to maintain registered image type supports */
  19 struct image_type_params *mkimage_tparams = NULL;
  20
  21 /* parameters initialized by core will be used by the image type code */
  22 struct image_tool_params params = {
  23         .os = IH_OS_LINUX,
  24         .arch = IH_ARCH_PPC,
  25         .type = IH_TYPE_KERNEL,
  26         .comp = IH_COMP_GZIP,
  27         .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
  28         .imagename = "",
  29         .imagename2 = "",
  30 };
  31
  32 /*
  33  * mkimage_register -
  34  *
  35  * It is used to register respective image generation/list support to the
  36  * mkimage core
  37  *
  38  * the input struct image_type_params is checked and appended to the link
  39  * list, if the input structure is already registered, error
  40  */
  41 void mkimage_register (struct image_type_params *tparams)
  42 {
  43         struct image_type_params **tp;
  44
  45         if (!tparams) {
  46                 fprintf (stderr, "%s: %s: Null input\n",
  47                         params.cmdname, __FUNCTION__);
  48                 exit (EXIT_FAILURE);
  49         }
  50
  51         /* scan the linked list, check for registry and point the last one */
  52         for (tp = &mkimage_tparams; *tp != NULL; tp = &(*tp)->next) {
  53                 if (!strcmp((*tp)->name, tparams->name)) {
  54                         fprintf (stderr, "%s: %s already registered\n",
  55                                 params.cmdname, tparams->name);
  56                         return;
  57                 }
  58         }
  59
  60         /* add input struct entry at the end of link list */
  61         *tp = tparams;
  62         /* mark input entry as last entry in the link list */
  63         tparams->next = NULL;
  64
  65         debug ("Registered %s\n", tparams->name);
  66 }
  67
  68 /*
  69  * mkimage_get_type -
  70  *
  71  * It scans all registers image type supports
  72  * checks the input type_id for each supported image type
  73  *
  74  * if successful,
  75  *      returns respective image_type_params pointer if success
  76  * if input type_id is not supported by any of image_type_support
  77  *      returns NULL
  78  */
  79 struct image_type_params *mkimage_get_type(int type)
  80 {
  81         struct image_type_params *curr;
  82
  83         for (curr = mkimage_tparams; curr != NULL; curr = curr->next) {
  84                 if (curr->check_image_type) {
  85                         if (!curr->check_image_type (type))
  86                                 return curr;
  87                 }
  88         }
  89         return NULL;
  90 }
  91
  92 /*
  93  * mkimage_verify_print_header -
  94  *
  95  * It scans mkimage_tparams link list,
  96  * verifies image_header for each supported image type
  97  * if verification is successful, prints respective header
  98  *
  99  * returns negative if input image format does not match with any of
 100  * supported image types
 101  */
 102 int mkimage_verify_print_header (void *ptr, struct stat *sbuf)
 103 {
 104         int retval = -1;
 105         struct image_type_params *curr;
 106
 107         for (curr = mkimage_tparams; curr != NULL; curr = curr->next ) {
 108                 if (curr->verify_header) {
 109                         retval = curr->verify_header (
 110                                 (unsigned char *)ptr, sbuf->st_size,
 111                                 &params);
 112
 113                         if (retval == 0) {
 114                                 /*
 115                                  * Print the image information
 116                                  * if verify is successful
 117                                  */
 118                                 if (curr->print_header)
 119                                         curr->print_header (ptr);
 120                                 else {
 121                                         fprintf (stderr,
 122                                         "%s: print_header undefined for %s\n",
 123                                         params.cmdname, curr->name);
 124                                 }
 125                                 break;
 126                         }
 127                 }
 128         }
 129         return retval;
 130 }
 131
 132 int
 133 main (int argc, char **argv)
 134 {
 135         int ifd = -1;
 136         struct stat sbuf;
 137         char *ptr;
 138         int retval = 0;
 139         struct image_type_params *tparams = NULL;
 140         int pad_len = 0;
 141
 142         /* Init all image generation/list support */
 143         register_image_tool(mkimage_register);
 144
 145         params.cmdname = *argv;
 146         params.addr = params.ep = 0;
 147
 148         while (--argc > 0 && **++argv == '-') {
 149                 while (*++*argv) {
 150                         switch (**argv) {
 151                         case 'l':
 152                                 params.lflag = 1;
 153                                 break;
 154                         case 'A':
 155                                 if ((--argc <= 0) ||
 156                                         (params.arch =
 157                                         genimg_get_arch_id (*++argv)) < 0)
 158                                         usage ();
 159                                 goto NXTARG;
 160                         case 'c':
 161                                 if (--argc <= 0)
 162                                         usage();
 163                                 params.comment = *++argv;
 164                                 goto NXTARG;
 165                         case 'C':
 166                                 if ((--argc <= 0) ||
 167                                         (params.comp =
 168                                         genimg_get_comp_id (*++argv)) < 0)
 169                                         usage ();
 170                                 goto NXTARG;
 171                         case 'D':
 172                                 if (--argc <= 0)
 173                                         usage ();
 174                                 params.dtc = *++argv;
 175                                 goto NXTARG;
 176
 177                         case 'O':
 178                                 if ((--argc <= 0) ||
 179                                         (params.os =
 180                                         genimg_get_os_id (*++argv)) < 0)
 181                                         usage ();
 182                                 goto NXTARG;
 183                         case 'T':
 184                                 if ((--argc <= 0) ||
 185                                         (params.type =
 186                                         genimg_get_type_id (*++argv)) < 0)
 187                                         usage ();
 188                                 goto NXTARG;
 189
 190                         case 'a':
 191                                 if (--argc <= 0)
 192                                         usage ();
 193                                 params.addr = strtoul (*++argv, &ptr, 16);
 194                                 if (*ptr) {
 195                                         fprintf (stderr,
 196                                                 "%s: invalid load address %s\n",
 197                                                 params.cmdname, *argv);
 198                                         exit (EXIT_FAILURE);
 199                                 }
 200                                 goto NXTARG;
 201                         case 'd':
 202                                 if (--argc <= 0)
 203                                         usage ();
 204                                 params.datafile = *++argv;
 205                                 params.dflag = 1;
 206                                 goto NXTARG;
 207                         case 'e':
 208                                 if (--argc <= 0)
 209                                         usage ();
 210                                 params.ep = strtoul (*++argv, &ptr, 16);
 211                                 if (*ptr) {
 212                                         fprintf (stderr,
 213                                                 "%s: invalid entry point %s\n",
 214                                                 params.cmdname, *argv);
 215                                         exit (EXIT_FAILURE);
 216                                 }
 217                                 params.eflag = 1;
 218                                 goto NXTARG;
 219                         case 'f':
 220                                 if (--argc <= 0)
 221                                         usage ();
 222                                 params.datafile = *++argv;
 223                                 /* no break */
 224                         case 'F':
 225                                 /*
 226                                  * The flattened image tree (FIT) format
 227                                  * requires a flattened device tree image type
 228                                  */
 229                                 params.type = IH_TYPE_FLATDT;
 230                                 params.fflag = 1;
 231                                 goto NXTARG;
 232                         case 'k':
 233                                 if (--argc <= 0)
 234                                         usage();
 235                                 params.keydir = *++argv;
 236                                 goto NXTARG;
 237                         case 'K':
 238                                 if (--argc <= 0)
 239                                         usage();
 240                                 params.keydest = *++argv;
 241                                 goto NXTARG;
 242                         case 'n':
 243                                 if (--argc <= 0)
 244                                         usage ();
 245                                 params.imagename = *++argv;
 246                                 goto NXTARG;
 247                         case 'r':
 248                                 params.require_keys = 1;
 249                                 break;
 250                         case 'R':
 251                                 if (--argc <= 0)
 252                                         usage();
 253                                 /*
 254                                  * This entry is for the second configuration
 255                                  * file, if only one is not enough.
 256                                  */
 257                                 params.imagename2 = *++argv;
 258                                 goto NXTARG;
 259                         case 's':
 260                                 params.skipcpy = 1;
 261                                 break;
 262                         case 'v':
 263                                 params.vflag++;
 264                                 break;
 265                         case 'V':
 266                                 printf("mkimage version %s\n", PLAIN_VERSION);
 267                                 exit(EXIT_SUCCESS);
 268                         case 'x':
 269                                 params.xflag++;
 270                                 break;
 271                         default:
 272                                 usage ();
 273                         }
 274                 }
 275 NXTARG:         ;
 276         }
 277
 278         if (argc != 1)
 279                 usage ();
 280
 281         /* set tparams as per input type_id */
 282         tparams = mkimage_get_type(params.type);
 283         if (tparams == NULL) {
 284                 fprintf (stderr, "%s: unsupported type %s\n",
 285                         params.cmdname, genimg_get_type_name(params.type));
 286                 exit (EXIT_FAILURE);
 287         }
 288
 289         /*
 290          * check the passed arguments parameters meets the requirements
 291          * as per image type to be generated/listed
 292          */
 293         if (tparams->check_params)
 294                 if (tparams->check_params (&params))
 295                         usage ();
 296
 297         if (!params.eflag) {
 298                 params.ep = params.addr;
 299                 /* If XIP, entry point must be after the U-Boot header */
 300                 if (params.xflag)
 301                         params.ep += tparams->header_size;
 302         }
 303
 304         params.imagefile = *argv;
 305
 306         if (params.fflag){
 307                 if (tparams->fflag_handle)
 308                         /*
 309                          * in some cases, some additional processing needs
 310                          * to be done if fflag is defined
 311                          *
 312                          * For ex. fit_handle_file for Fit file support
 313                          */
 314                         retval = tparams->fflag_handle(&params);
 315
 316                 if (retval != EXIT_SUCCESS)
 317                         exit (retval);
 318         }
 319
 320         if (params.lflag || params.fflag) {
 321                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 322         } else {
 323                 ifd = open (params.imagefile,
 324                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 325         }
 326
 327         if (ifd < 0) {
 328                 fprintf (stderr, "%s: Can't open %s: %s\n",
 329                         params.cmdname, params.imagefile,
 330                         strerror(errno));
 331                 exit (EXIT_FAILURE);
 332         }
 333
 334         if (params.lflag || params.fflag) {
 335                 /*
 336                  * list header information of existing image
 337                  */
 338                 if (fstat(ifd, &sbuf) < 0) {
 339                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 340                                 params.cmdname, params.imagefile,
 341                                 strerror(errno));
 342                         exit (EXIT_FAILURE);
 343                 }
 344
 345                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 346                         fprintf (stderr,
 347                                 "%s: Bad size: \"%s\" is not valid image\n",
 348                                 params.cmdname, params.imagefile);
 349                         exit (EXIT_FAILURE);
 350                 }
 351
 352                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 353                 if (ptr == MAP_FAILED) {
 354                         fprintf (stderr, "%s: Can't read %s: %s\n",
 355                                 params.cmdname, params.imagefile,
 356                                 strerror(errno));
 357                         exit (EXIT_FAILURE);
 358                 }
 359
 360                 /*
 361                  * scan through mkimage registry for all supported image types
 362                  * and verify the input image file header for match
 363                  * Print the image information for matched image type
 364                  * Returns the error code if not matched
 365                  */
 366                 retval = mkimage_verify_print_header (ptr, &sbuf);
 367
 368                 (void) munmap((void *)ptr, sbuf.st_size);
 369                 (void) close (ifd);
 370
 371                 exit (retval);
 372         }
 373
 374         /*
 375          * In case there an header with a variable
 376          * length will be added, the corresponding
 377          * function is called. This is responsible to
 378          * allocate memory for the header itself.
 379          */
 380         if (tparams->vrec_header)
 381                 pad_len = tparams->vrec_header(&params, tparams);
 382         else
 383                 memset(tparams->hdr, 0, tparams->header_size);
 384
 385         if (write(ifd, tparams->hdr, tparams->header_size)
 386                                         != tparams->header_size) {
 387                 fprintf (stderr, "%s: Write error on %s: %s\n",
 388                         params.cmdname, params.imagefile, strerror(errno));
 389                 exit (EXIT_FAILURE);
 390         }
 391
 392         if (!params.skipcpy) {
 393                 if (params.type == IH_TYPE_MULTI ||
 394                     params.type == IH_TYPE_SCRIPT) {
 395                         char *file = params.datafile;
 396                         uint32_t size;
 397
 398                         for (;;) {
 399                                 char *sep = NULL;
 400
 401                                 if (file) {
 402                                         if ((sep = strchr(file, ':')) != NULL) {
 403                                                 *sep = '\0';
 404                                         }
 405
 406                                         if (stat (file, &sbuf) < 0) {
 407                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 408                                                          params.cmdname, file, strerror(errno));
 409                                                 exit (EXIT_FAILURE);
 410                                         }
 411                                         size = cpu_to_uimage (sbuf.st_size);
 412                                 } else {
 413                                         size = 0;
 414                                 }
 415
 416                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 417                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 418                                                  params.cmdname, params.imagefile,
 419                                                  strerror(errno));
 420                                         exit (EXIT_FAILURE);
 421                                 }
 422
 423                                 if (!file) {
 424                                         break;
 425                                 }
 426
 427                                 if (sep) {
 428                                         *sep = ':';
 429                                         file = sep + 1;
 430                                 } else {
 431                                         file = NULL;
 432                                 }
 433                         }
 434
 435                         file = params.datafile;
 436
 437                         for (;;) {
 438                                 char *sep = strchr(file, ':');
 439                                 if (sep) {
 440                                         *sep = '\0';
 441                                         copy_file (ifd, file, 1);
 442                                         *sep++ = ':';
 443                                         file = sep;
 444                                 } else {
 445                                         copy_file (ifd, file, 0);
 446                                         break;
 447                                 }
 448                         }
 449                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 450                         /* PBL has special Image format, implements its' own */
 451                         pbl_load_uboot(ifd, &params);
 452                 } else {
 453                         copy_file(ifd, params.datafile, pad_len);
 454                 }
 455         }
 456
 457         /* We're a bit of paranoid */
 458 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 459    !defined(__sun__) && \
 460    !defined(__FreeBSD__) && \
 461    !defined(__OpenBSD__) && \
 462    !defined(__APPLE__)
 463         (void) fdatasync (ifd);
 464 #else
 465         (void) fsync (ifd);
 466 #endif
 467
 468         if (fstat(ifd, &sbuf) < 0) {
 469                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 470                         params.cmdname, params.imagefile, strerror(errno));
 471                 exit (EXIT_FAILURE);
 472         }
 473
 474         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 475         if (ptr == MAP_FAILED) {
 476                 fprintf (stderr, "%s: Can't map %s: %s\n",
 477                         params.cmdname, params.imagefile, strerror(errno));
 478                 exit (EXIT_FAILURE);
 479         }
 480
 481         /* Setup the image header as per input image type*/
 482         if (tparams->set_header)
 483                 tparams->set_header (ptr, &sbuf, ifd, &params);
 484         else {
 485                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 486                         params.cmdname, tparams->name, strerror(errno));
 487                 exit (EXIT_FAILURE);
 488         }
 489
 490         /* Print the image information by processing image header */
 491         if (tparams->print_header)
 492                 tparams->print_header (ptr);
 493         else {
 494                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 495                         params.cmdname, tparams->name, strerror(errno));
 496                 exit (EXIT_FAILURE);
 497         }
 498
 499         (void) munmap((void *)ptr, sbuf.st_size);
 500
 501         /* We're a bit of paranoid */
 502 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 503    !defined(__sun__) && \
 504    !defined(__FreeBSD__) && \
 505    !defined(__OpenBSD__) && \
 506    !defined(__APPLE__)
 507         (void) fdatasync (ifd);
 508 #else
 509         (void) fsync (ifd);
 510 #endif
 511
 512         if (close(ifd)) {
 513                 fprintf (stderr, "%s: Write error on %s: %s\n",
 514                         params.cmdname, params.imagefile, strerror(errno));
 515                 exit (EXIT_FAILURE);
 516         }
 517
 518         exit (EXIT_SUCCESS);
 519 }
 520
 521 static void
 522 copy_file (int ifd, const char *datafile, int pad)
 523 {
 524         int dfd;
 525         struct stat sbuf;
 526         unsigned char *ptr;
 527         int tail;
 528         int zero = 0;
 529         uint8_t zeros[4096];
 530         int offset = 0;
 531         int size;
 532         struct image_type_params *tparams = mkimage_get_type (params.type);
 533
 534         if (pad >= sizeof(zeros)) {
 535                 fprintf(stderr, "%s: Can't pad to %d\n",
 536                         params.cmdname, pad);
 537                 exit(EXIT_FAILURE);
 538         }
 539
 540         memset(zeros, 0, sizeof(zeros));
 541
 542         if (params.vflag) {
 543                 fprintf (stderr, "Adding Image %s\n", datafile);
 544         }
 545
 546         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 547                 fprintf (stderr, "%s: Can't open %s: %s\n",
 548                         params.cmdname, datafile, strerror(errno));
 549                 exit (EXIT_FAILURE);
 550         }
 551
 552         if (fstat(dfd, &sbuf) < 0) {
 553                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 554                         params.cmdname, datafile, strerror(errno));
 555                 exit (EXIT_FAILURE);
 556         }
 557
 558         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 559         if (ptr == MAP_FAILED) {
 560                 fprintf (stderr, "%s: Can't read %s: %s\n",
 561                         params.cmdname, datafile, strerror(errno));
 562                 exit (EXIT_FAILURE);
 563         }
 564
 565         if (params.xflag) {
 566                 unsigned char *p = NULL;
 567                 /*
 568                  * XIP: do not append the image_header_t at the
 569                  * beginning of the file, but consume the space
 570                  * reserved for it.
 571                  */
 572
 573                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 574                         fprintf (stderr,
 575                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 576                                 params.cmdname, datafile);
 577                         exit (EXIT_FAILURE);
 578                 }
 579
 580                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 581                         if ( *p != 0xff ) {
 582                                 fprintf (stderr,
 583                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 584                                         params.cmdname, datafile);
 585                                 exit (EXIT_FAILURE);
 586                         }
 587                 }
 588
 589                 offset = tparams->header_size;
 590         }
 591
 592         size = sbuf.st_size - offset;
 593         if (write(ifd, ptr + offset, size) != size) {
 594                 fprintf (stderr, "%s: Write error on %s: %s\n",
 595                         params.cmdname, params.imagefile, strerror(errno));
 596                 exit (EXIT_FAILURE);
 597         }
 598
 599         tail = size % 4;
 600         if ((pad == 1) && (tail != 0)) {
 601
 602                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 603                         fprintf (stderr, "%s: Write error on %s: %s\n",
 604                                 params.cmdname, params.imagefile,
 605                                 strerror(errno));
 606                         exit (EXIT_FAILURE);
 607                 }
 608         } else if (pad > 1) {
 609                 if (write(ifd, (char *)&zeros, pad) != pad) {
 610                         fprintf(stderr, "%s: Write error on %s: %s\n",
 611                                 params.cmdname, params.imagefile,
 612                                 strerror(errno));
 613                         exit(EXIT_FAILURE);
 614                 }
 615         }
 616
 617         (void) munmap((void *)ptr, sbuf.st_size);
 618         (void) close (dfd);
 619 }
 620
 621 static void usage(void)
 622 {
 623         fprintf (stderr, "Usage: %s -l image\n"
 624                          "          -l ==> list image header information\n",
 625                 params.cmdname);
 626         fprintf (stderr, "       %s [-x] -A arch -O os -T type -C comp "
 627                          "-a addr -e ep -n name -d data_file[:data_file...] image\n"
 628                          "          -A ==> set architecture to 'arch'\n"
 629                          "          -O ==> set operating system to 'os'\n"
 630                          "          -T ==> set image type to 'type'\n"
 631                          "          -C ==> set compression type 'comp'\n"
 632                          "          -a ==> set load address to 'addr' (hex)\n"
 633                          "          -e ==> set entry point to 'ep' (hex)\n"
 634                          "          -n ==> set image name to 'name'\n"
 635                          "          -d ==> use image data from 'datafile'\n"
 636                          "          -x ==> set XIP (execute in place)\n",
 637                 params.cmdname);
 638         fprintf(stderr, "       %s [-D dtc_options] [-f fit-image.its|-F] fit-image\n",
 639                 params.cmdname);
 640         fprintf(stderr, "          -D => set options for device tree compiler\n"
 641                         "          -f => input filename for FIT source\n");
 642 #ifdef CONFIG_FIT_SIGNATURE
 643         fprintf(stderr, "Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-r]\n"
 644                         "          -k => set directory containing private keys\n"
 645                         "          -K => write public keys to this .dtb file\n"
 646                         "          -c => add comment in signature node\n"
 647                         "          -F => re-sign existing FIT image\n"
 648                         "          -r => mark keys used as 'required' in dtb\n");
 649 #else
 650         fprintf(stderr, "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 651 #endif
 652         fprintf (stderr, "       %s -V ==> print version information and exit\n",
 653                 params.cmdname);
 654
 655         exit (EXIT_FAILURE);
 656 }