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
  17 /* parameters initialized by core will be used by the image type code */
  18 static struct image_tool_params params = {
  19         .os = IH_OS_LINUX,
  20         .arch = IH_ARCH_PPC,
  21         .type = IH_TYPE_KERNEL,
  22         .comp = IH_COMP_GZIP,
  23         .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
  24         .imagename = "",
  25         .imagename2 = "",
  26 };
  27
  28 static int h_compare_image_name(const void *vtype1, const void *vtype2)
  29 {
  30         const int *type1 = vtype1;
  31         const int *type2 = vtype2;
  32         const char *name1 = genimg_get_type_short_name(*type1);
  33         const char *name2 = genimg_get_type_short_name(*type2);
  34
  35         return strcmp(name1, name2);
  36 }
  37
  38 /* Show all image types supported by mkimage */
  39 static void show_image_types(void)
  40 {
  41         struct image_type_params *tparams;
  42         int order[IH_TYPE_COUNT];
  43         int count;
  44         int type;
  45         int i;
  46
  47         /* Sort the names in order of short name for easier reading */
  48         memset(order, '\0', sizeof(order));
  49         for (count = 0, type = 0; type < IH_TYPE_COUNT; type++) {
  50                 tparams = imagetool_get_type(type);
  51                 if (tparams)
  52                         order[count++] = type;
  53         }
  54         qsort(order, count, sizeof(int), h_compare_image_name);
  55
  56         fprintf(stderr, "\nInvalid image type. Supported image types:\n");
  57         for (i = 0; i < count; i++) {
  58                 type = order[i];
  59                 tparams = imagetool_get_type(type);
  60                 if (tparams) {
  61                         fprintf(stderr, "\t%-15s  %s\n",
  62                                 genimg_get_type_short_name(type),
  63                                 genimg_get_type_name(type));
  64                 }
  65         }
  66         fprintf(stderr, "\n");
  67 }
  68
  69 static void usage(const char *msg)
  70 {
  71         fprintf(stderr, "Error: %s\n", msg);
  72         fprintf(stderr, "Usage: %s -l image\n"
  73                          "          -l ==> list image header information\n",
  74                 params.cmdname);
  75         fprintf(stderr,
  76                 "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
  77                 "          -A ==> set architecture to 'arch'\n"
  78                 "          -O ==> set operating system to 'os'\n"
  79                 "          -T ==> set image type to 'type'\n"
  80                 "          -C ==> set compression type 'comp'\n"
  81                 "          -a ==> set load address to 'addr' (hex)\n"
  82                 "          -e ==> set entry point to 'ep' (hex)\n"
  83                 "          -n ==> set image name to 'name'\n"
  84                 "          -d ==> use image data from 'datafile'\n"
  85                 "          -x ==> set XIP (execute in place)\n",
  86                 params.cmdname);
  87         fprintf(stderr,
  88                 "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] fit-image\n"
  89                 "           <dtb> file is used with -f auto, it may occour multiple times.\n",
  90                 params.cmdname);
  91         fprintf(stderr,
  92                 "          -D => set all options for device tree compiler\n"
  93                 "          -f => input filename for FIT source\n");
  94 #ifdef CONFIG_FIT_SIGNATURE
  95         fprintf(stderr,
  96                 "Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-r]\n"
  97                 "          -k => set directory containing private keys\n"
  98                 "          -K => write public keys to this .dtb file\n"
  99                 "          -c => add comment in signature node\n"
 100                 "          -F => re-sign existing FIT image\n"
 101                 "          -r => mark keys used as 'required' in dtb\n");
 102 #else
 103         fprintf(stderr,
 104                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 105 #endif
 106         fprintf(stderr, "       %s -V ==> print version information and exit\n",
 107                 params.cmdname);
 108         fprintf(stderr, "Use -T to see a list of available image types\n");
 109
 110         exit(EXIT_FAILURE);
 111 }
 112
 113 static int add_content(int type, const char *fname)
 114 {
 115         struct content_info *cont;
 116
 117         cont = calloc(1, sizeof(*cont));
 118         if (!cont)
 119                 return -1;
 120         cont->type = type;
 121         cont->fname = fname;
 122         if (params.content_tail)
 123                 params.content_tail->next = cont;
 124         else
 125                 params.content_head = cont;
 126         params.content_tail = cont;
 127
 128         return 0;
 129 }
 130
 131 static void process_args(int argc, char **argv)
 132 {
 133         char *ptr;
 134         int type = IH_TYPE_INVALID;
 135         char *datafile = NULL;
 136         int expecting;
 137         int opt;
 138
 139         expecting = IH_TYPE_COUNT;      /* Unknown */
 140         while ((opt = getopt(argc, argv,
 141                              "a:A:b:cC:d:D:e:Ef:Fk:K:ln:O:rR:sT:vVx")) != -1) {
 142                 switch (opt) {
 143                 case 'a':
 144                         params.addr = strtoull(optarg, &ptr, 16);
 145                         if (*ptr) {
 146                                 fprintf(stderr, "%s: invalid load address %s\n",
 147                                         params.cmdname, optarg);
 148                                 exit(EXIT_FAILURE);
 149                         }
 150                         break;
 151                 case 'A':
 152                         params.arch = genimg_get_arch_id(optarg);
 153                         if (params.arch < 0)
 154                                 usage("Invalid architecture");
 155                         break;
 156                 case 'b':
 157                         expecting = IH_TYPE_FLATDT;
 158                         if (add_content(expecting, optarg)) {
 159                                 fprintf(stderr,
 160                                         "%s: Out of memory adding content '%s'",
 161                                         params.cmdname, optarg);
 162                                 exit(EXIT_FAILURE);
 163                         }
 164                         break;
 165                 case 'c':
 166                         params.comment = optarg;
 167                         break;
 168                 case 'C':
 169                         params.comp = genimg_get_comp_id(optarg);
 170                         if (params.comp < 0)
 171                                 usage("Invalid compression type");
 172                         break;
 173                 case 'd':
 174                         params.datafile = optarg;
 175                         params.dflag = 1;
 176                         break;
 177                 case 'D':
 178                         params.dtc = optarg;
 179                         break;
 180                 case 'e':
 181                         params.ep = strtoull(optarg, &ptr, 16);
 182                         if (*ptr) {
 183                                 fprintf(stderr, "%s: invalid entry point %s\n",
 184                                         params.cmdname, optarg);
 185                                 exit(EXIT_FAILURE);
 186                         }
 187                         params.eflag = 1;
 188                         break;
 189                 case 'E':
 190                         params.external_data = true;
 191                         break;
 192                 case 'f':
 193                         datafile = optarg;
 194                         params.auto_its = !strcmp(datafile, "auto");
 195                         /* no break */
 196                 case 'F':
 197                         /*
 198                          * The flattened image tree (FIT) format
 199                          * requires a flattened device tree image type
 200                          */
 201                         params.fit_image_type = params.type;
 202                         params.type = IH_TYPE_FLATDT;
 203                         params.fflag = 1;
 204                         break;
 205                 case 'k':
 206                         params.keydir = optarg;
 207                         break;
 208                 case 'K':
 209                         params.keydest = optarg;
 210                         break;
 211                 case 'l':
 212                         params.lflag = 1;
 213                         break;
 214                 case 'n':
 215                         params.imagename = optarg;
 216                         break;
 217                 case 'O':
 218                         params.os = genimg_get_os_id(optarg);
 219                         if (params.os < 0)
 220                                 usage("Invalid operating system");
 221                         break;
 222                 case 'r':
 223                         params.require_keys = 1;
 224                         break;
 225                 case 'R':
 226                         /*
 227                          * This entry is for the second configuration
 228                          * file, if only one is not enough.
 229                          */
 230                         params.imagename2 = optarg;
 231                         break;
 232                 case 's':
 233                         params.skipcpy = 1;
 234                         break;
 235                 case 'T':
 236                         type = genimg_get_type_id(optarg);
 237                         if (type < 0) {
 238                                 show_image_types();
 239                                 usage("Invalid image type");
 240                         }
 241                         expecting = type;
 242                         break;
 243                 case 'v':
 244                         params.vflag++;
 245                         break;
 246                 case 'V':
 247                         printf("mkimage version %s\n", PLAIN_VERSION);
 248                         exit(EXIT_SUCCESS);
 249                 case 'x':
 250                         params.xflag++;
 251                         break;
 252                 default:
 253                         usage("Invalid option");
 254                 }
 255         }
 256
 257         if (optind < argc && expecting == type)
 258                 params.imagefile = argv[optind];
 259
 260         /*
 261          * For auto-generated FIT images we need to know the image type to put
 262          * in the FIT, which is separate from the file's image type (which
 263          * will always be IH_TYPE_FLATDT in this case).
 264          */
 265         if (params.type == IH_TYPE_FLATDT) {
 266                 params.fit_image_type = type;
 267                 if (!params.auto_its)
 268                         params.datafile = datafile;
 269         } else if (type != IH_TYPE_INVALID) {
 270                 params.type = type;
 271         }
 272
 273         if (!params.imagefile)
 274                 usage("Missing output filename");
 275 }
 276
 277
 278 int main(int argc, char **argv)
 279 {
 280         int ifd = -1;
 281         struct stat sbuf;
 282         char *ptr;
 283         int retval = 0;
 284         struct image_type_params *tparams = NULL;
 285         int pad_len = 0;
 286         int dfd;
 287
 288         params.cmdname = *argv;
 289         params.addr = 0;
 290         params.ep = 0;
 291
 292         process_args(argc, argv);
 293
 294         /* set tparams as per input type_id */
 295         tparams = imagetool_get_type(params.type);
 296         if (tparams == NULL) {
 297                 fprintf (stderr, "%s: unsupported type %s\n",
 298                         params.cmdname, genimg_get_type_name(params.type));
 299                 exit (EXIT_FAILURE);
 300         }
 301
 302         /*
 303          * check the passed arguments parameters meets the requirements
 304          * as per image type to be generated/listed
 305          */
 306         if (tparams->check_params)
 307                 if (tparams->check_params (&params))
 308                         usage("Bad parameters for image type");
 309
 310         if (!params.eflag) {
 311                 params.ep = params.addr;
 312                 /* If XIP, entry point must be after the U-Boot header */
 313                 if (params.xflag)
 314                         params.ep += tparams->header_size;
 315         }
 316
 317         if (params.fflag){
 318                 if (tparams->fflag_handle)
 319                         /*
 320                          * in some cases, some additional processing needs
 321                          * to be done if fflag is defined
 322                          *
 323                          * For ex. fit_handle_file for Fit file support
 324                          */
 325                         retval = tparams->fflag_handle(&params);
 326
 327                 if (retval != EXIT_SUCCESS)
 328                         exit (retval);
 329         }
 330
 331         if (params.lflag || params.fflag) {
 332                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 333         } else {
 334                 ifd = open (params.imagefile,
 335                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 336         }
 337
 338         if (ifd < 0) {
 339                 fprintf (stderr, "%s: Can't open %s: %s\n",
 340                         params.cmdname, params.imagefile,
 341                         strerror(errno));
 342                 exit (EXIT_FAILURE);
 343         }
 344
 345         if (params.lflag || params.fflag) {
 346                 /*
 347                  * list header information of existing image
 348                  */
 349                 if (fstat(ifd, &sbuf) < 0) {
 350                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 351                                 params.cmdname, params.imagefile,
 352                                 strerror(errno));
 353                         exit (EXIT_FAILURE);
 354                 }
 355
 356                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 357                         fprintf (stderr,
 358                                 "%s: Bad size: \"%s\" is not valid image\n",
 359                                 params.cmdname, params.imagefile);
 360                         exit (EXIT_FAILURE);
 361                 }
 362
 363                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 364                 if (ptr == MAP_FAILED) {
 365                         fprintf (stderr, "%s: Can't read %s: %s\n",
 366                                 params.cmdname, params.imagefile,
 367                                 strerror(errno));
 368                         exit (EXIT_FAILURE);
 369                 }
 370
 371                 /*
 372                  * scan through mkimage registry for all supported image types
 373                  * and verify the input image file header for match
 374                  * Print the image information for matched image type
 375                  * Returns the error code if not matched
 376                  */
 377                 retval = imagetool_verify_print_header(ptr, &sbuf,
 378                                 tparams, &params);
 379
 380                 (void) munmap((void *)ptr, sbuf.st_size);
 381                 (void) close (ifd);
 382
 383                 exit (retval);
 384         }
 385
 386         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 387                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 388                 if (dfd < 0) {
 389                         fprintf(stderr, "%s: Can't open %s: %s\n",
 390                                 params.cmdname, params.datafile,
 391                                 strerror(errno));
 392                         exit(EXIT_FAILURE);
 393                 }
 394
 395                 if (fstat(dfd, &sbuf) < 0) {
 396                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 397                                 params.cmdname, params.datafile,
 398                                 strerror(errno));
 399                         exit(EXIT_FAILURE);
 400                 }
 401
 402                 params.file_size = sbuf.st_size + tparams->header_size;
 403                 close(dfd);
 404         }
 405
 406         /*
 407          * In case there an header with a variable
 408          * length will be added, the corresponding
 409          * function is called. This is responsible to
 410          * allocate memory for the header itself.
 411          */
 412         if (tparams->vrec_header)
 413                 pad_len = tparams->vrec_header(&params, tparams);
 414         else
 415                 memset(tparams->hdr, 0, tparams->header_size);
 416
 417         if (write(ifd, tparams->hdr, tparams->header_size)
 418                                         != tparams->header_size) {
 419                 fprintf (stderr, "%s: Write error on %s: %s\n",
 420                         params.cmdname, params.imagefile, strerror(errno));
 421                 exit (EXIT_FAILURE);
 422         }
 423
 424         if (!params.skipcpy) {
 425                 if (params.type == IH_TYPE_MULTI ||
 426                     params.type == IH_TYPE_SCRIPT) {
 427                         char *file = params.datafile;
 428                         uint32_t size;
 429
 430                         for (;;) {
 431                                 char *sep = NULL;
 432
 433                                 if (file) {
 434                                         if ((sep = strchr(file, ':')) != NULL) {
 435                                                 *sep = '\0';
 436                                         }
 437
 438                                         if (stat (file, &sbuf) < 0) {
 439                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 440                                                          params.cmdname, file, strerror(errno));
 441                                                 exit (EXIT_FAILURE);
 442                                         }
 443                                         size = cpu_to_uimage (sbuf.st_size);
 444                                 } else {
 445                                         size = 0;
 446                                 }
 447
 448                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 449                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 450                                                  params.cmdname, params.imagefile,
 451                                                  strerror(errno));
 452                                         exit (EXIT_FAILURE);
 453                                 }
 454
 455                                 if (!file) {
 456                                         break;
 457                                 }
 458
 459                                 if (sep) {
 460                                         *sep = ':';
 461                                         file = sep + 1;
 462                                 } else {
 463                                         file = NULL;
 464                                 }
 465                         }
 466
 467                         file = params.datafile;
 468
 469                         for (;;) {
 470                                 char *sep = strchr(file, ':');
 471                                 if (sep) {
 472                                         *sep = '\0';
 473                                         copy_file (ifd, file, 1);
 474                                         *sep++ = ':';
 475                                         file = sep;
 476                                 } else {
 477                                         copy_file (ifd, file, 0);
 478                                         break;
 479                                 }
 480                         }
 481                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 482                         /* PBL has special Image format, implements its' own */
 483                         pbl_load_uboot(ifd, &params);
 484                 } else {
 485                         copy_file(ifd, params.datafile, pad_len);
 486                 }
 487         }
 488
 489         /* We're a bit of paranoid */
 490 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 491    !defined(__sun__) && \
 492    !defined(__FreeBSD__) && \
 493    !defined(__OpenBSD__) && \
 494    !defined(__APPLE__)
 495         (void) fdatasync (ifd);
 496 #else
 497         (void) fsync (ifd);
 498 #endif
 499
 500         if (fstat(ifd, &sbuf) < 0) {
 501                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 502                         params.cmdname, params.imagefile, strerror(errno));
 503                 exit (EXIT_FAILURE);
 504         }
 505         params.file_size = sbuf.st_size;
 506
 507         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 508         if (ptr == MAP_FAILED) {
 509                 fprintf (stderr, "%s: Can't map %s: %s\n",
 510                         params.cmdname, params.imagefile, strerror(errno));
 511                 exit (EXIT_FAILURE);
 512         }
 513
 514         /* Setup the image header as per input image type*/
 515         if (tparams->set_header)
 516                 tparams->set_header (ptr, &sbuf, ifd, &params);
 517         else {
 518                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 519                         params.cmdname, tparams->name, strerror(errno));
 520                 exit (EXIT_FAILURE);
 521         }
 522
 523         /* Print the image information by processing image header */
 524         if (tparams->print_header)
 525                 tparams->print_header (ptr);
 526         else {
 527                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 528                         params.cmdname, tparams->name, strerror(errno));
 529                 exit (EXIT_FAILURE);
 530         }
 531
 532         (void) munmap((void *)ptr, sbuf.st_size);
 533
 534         /* We're a bit of paranoid */
 535 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 536    !defined(__sun__) && \
 537    !defined(__FreeBSD__) && \
 538    !defined(__OpenBSD__) && \
 539    !defined(__APPLE__)
 540         (void) fdatasync (ifd);
 541 #else
 542         (void) fsync (ifd);
 543 #endif
 544
 545         if (close(ifd)) {
 546                 fprintf (stderr, "%s: Write error on %s: %s\n",
 547                         params.cmdname, params.imagefile, strerror(errno));
 548                 exit (EXIT_FAILURE);
 549         }
 550
 551         exit (EXIT_SUCCESS);
 552 }
 553
 554 static void
 555 copy_file (int ifd, const char *datafile, int pad)
 556 {
 557         int dfd;
 558         struct stat sbuf;
 559         unsigned char *ptr;
 560         int tail;
 561         int zero = 0;
 562         uint8_t zeros[4096];
 563         int offset = 0;
 564         int size;
 565         struct image_type_params *tparams = imagetool_get_type(params.type);
 566
 567         memset(zeros, 0, sizeof(zeros));
 568
 569         if (params.vflag) {
 570                 fprintf (stderr, "Adding Image %s\n", datafile);
 571         }
 572
 573         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 574                 fprintf (stderr, "%s: Can't open %s: %s\n",
 575                         params.cmdname, datafile, strerror(errno));
 576                 exit (EXIT_FAILURE);
 577         }
 578
 579         if (fstat(dfd, &sbuf) < 0) {
 580                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 581                         params.cmdname, datafile, strerror(errno));
 582                 exit (EXIT_FAILURE);
 583         }
 584
 585         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 586         if (ptr == MAP_FAILED) {
 587                 fprintf (stderr, "%s: Can't read %s: %s\n",
 588                         params.cmdname, datafile, strerror(errno));
 589                 exit (EXIT_FAILURE);
 590         }
 591
 592         if (params.xflag) {
 593                 unsigned char *p = NULL;
 594                 /*
 595                  * XIP: do not append the image_header_t at the
 596                  * beginning of the file, but consume the space
 597                  * reserved for it.
 598                  */
 599
 600                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 601                         fprintf (stderr,
 602                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 603                                 params.cmdname, datafile);
 604                         exit (EXIT_FAILURE);
 605                 }
 606
 607                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 608                         if ( *p != 0xff ) {
 609                                 fprintf (stderr,
 610                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 611                                         params.cmdname, datafile);
 612                                 exit (EXIT_FAILURE);
 613                         }
 614                 }
 615
 616                 offset = tparams->header_size;
 617         }
 618
 619         size = sbuf.st_size - offset;
 620         if (write(ifd, ptr + offset, size) != size) {
 621                 fprintf (stderr, "%s: Write error on %s: %s\n",
 622                         params.cmdname, params.imagefile, strerror(errno));
 623                 exit (EXIT_FAILURE);
 624         }
 625
 626         tail = size % 4;
 627         if ((pad == 1) && (tail != 0)) {
 628
 629                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 630                         fprintf (stderr, "%s: Write error on %s: %s\n",
 631                                 params.cmdname, params.imagefile,
 632                                 strerror(errno));
 633                         exit (EXIT_FAILURE);
 634                 }
 635         } else if (pad > 1) {
 636                 while (pad > 0) {
 637                         int todo = sizeof(zeros);
 638
 639                         if (todo > pad)
 640                                 todo = pad;
 641                         if (write(ifd, (char *)&zeros, todo) != todo) {
 642                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 643                                         params.cmdname, params.imagefile,
 644                                         strerror(errno));
 645                                 exit(EXIT_FAILURE);
 646                         }
 647                         pad -= todo;
 648                 }
 649         }
 650
 651         (void) munmap((void *)ptr, sbuf.st_size);
 652         (void) close (dfd);
 653 }