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_list>] fit-image\n"
  89                 "           <dtb_list> is used with -f auto, and is a space-separated list of .dtb files\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:bcC:d:D:e:f: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                         break;
 159                 case 'c':
 160                         params.comment = optarg;
 161                         break;
 162                 case 'C':
 163                         params.comp = genimg_get_comp_id(optarg);
 164                         if (params.comp < 0)
 165                                 usage("Invalid compression type");
 166                         break;
 167                 case 'd':
 168                         params.datafile = optarg;
 169                         params.dflag = 1;
 170                         break;
 171                 case 'D':
 172                         params.dtc = optarg;
 173                         break;
 174                 case 'e':
 175                         params.ep = strtoull(optarg, &ptr, 16);
 176                         if (*ptr) {
 177                                 fprintf(stderr, "%s: invalid entry point %s\n",
 178                                         params.cmdname, optarg);
 179                                 exit(EXIT_FAILURE);
 180                         }
 181                         params.eflag = 1;
 182                         break;
 183                 case 'f':
 184                         datafile = optarg;
 185                         params.auto_its = !strcmp(datafile, "auto");
 186                         /* no break */
 187                 case 'F':
 188                         /*
 189                          * The flattened image tree (FIT) format
 190                          * requires a flattened device tree image type
 191                          */
 192                         params.fit_image_type = params.type;
 193                         params.type = IH_TYPE_FLATDT;
 194                         params.fflag = 1;
 195                         break;
 196                 case 'k':
 197                         params.keydir = optarg;
 198                         break;
 199                 case 'K':
 200                         params.keydest = optarg;
 201                         break;
 202                 case 'l':
 203                         params.lflag = 1;
 204                         break;
 205                 case 'n':
 206                         params.imagename = optarg;
 207                         break;
 208                 case 'O':
 209                         params.os = genimg_get_os_id(optarg);
 210                         if (params.os < 0)
 211                                 usage("Invalid operating system");
 212                         break;
 213                 case 'r':
 214                         params.require_keys = 1;
 215                         break;
 216                 case 'R':
 217                         /*
 218                          * This entry is for the second configuration
 219                          * file, if only one is not enough.
 220                          */
 221                         params.imagename2 = optarg;
 222                         break;
 223                 case 's':
 224                         params.skipcpy = 1;
 225                         break;
 226                 case 'T':
 227                         type = genimg_get_type_id(optarg);
 228                         if (type < 0) {
 229                                 show_image_types();
 230                                 usage("Invalid image type");
 231                         }
 232                         expecting = type;
 233                         break;
 234                 case 'v':
 235                         params.vflag++;
 236                         break;
 237                 case 'V':
 238                         printf("mkimage version %s\n", PLAIN_VERSION);
 239                         exit(EXIT_SUCCESS);
 240                 case 'x':
 241                         params.xflag++;
 242                         break;
 243                 case 1:
 244                         if (expecting == type || optind == argc) {
 245                                 params.imagefile = optarg;
 246                                 expecting = IH_TYPE_INVALID;
 247                         } else if (expecting == IH_TYPE_INVALID) {
 248                                 fprintf(stderr,
 249                                         "%s: Unknown content type: use -b before device tree files",
 250                                         params.cmdname);
 251                                 exit(EXIT_FAILURE);
 252                         } else {
 253                                 if (add_content(expecting, optarg)) {
 254                                         fprintf(stderr,
 255                                                 "%s: Out of memory adding content '%s'",
 256                                                 params.cmdname, optarg);
 257                                         exit(EXIT_FAILURE);
 258                                 }
 259                         }
 260                         break;
 261                 default:
 262                         usage("Invalid option");
 263                 }
 264         }
 265
 266         /*
 267          * For auto-generated FIT images we need to know the image type to put
 268          * in the FIT, which is separate from the file's image type (which
 269          * will always be IH_TYPE_FLATDT in this case).
 270          */
 271         if (params.type == IH_TYPE_FLATDT) {
 272                 params.fit_image_type = type;
 273                 if (!params.auto_its)
 274                         params.datafile = datafile;
 275         } else if (type != IH_TYPE_INVALID) {
 276                 params.type = type;
 277         }
 278
 279         if (!params.imagefile)
 280                 usage("Missing output filename");
 281 }
 282
 283
 284 int main(int argc, char **argv)
 285 {
 286         int ifd = -1;
 287         struct stat sbuf;
 288         char *ptr;
 289         int retval = 0;
 290         struct image_type_params *tparams = NULL;
 291         int pad_len = 0;
 292         int dfd;
 293
 294         params.cmdname = *argv;
 295         params.addr = 0;
 296         params.ep = 0;
 297
 298         process_args(argc, argv);
 299
 300         /* set tparams as per input type_id */
 301         tparams = imagetool_get_type(params.type);
 302         if (tparams == NULL) {
 303                 fprintf (stderr, "%s: unsupported type %s\n",
 304                         params.cmdname, genimg_get_type_name(params.type));
 305                 exit (EXIT_FAILURE);
 306         }
 307
 308         /*
 309          * check the passed arguments parameters meets the requirements
 310          * as per image type to be generated/listed
 311          */
 312         if (tparams->check_params)
 313                 if (tparams->check_params (&params))
 314                         usage("Bad parameters for image type");
 315
 316         if (!params.eflag) {
 317                 params.ep = params.addr;
 318                 /* If XIP, entry point must be after the U-Boot header */
 319                 if (params.xflag)
 320                         params.ep += tparams->header_size;
 321         }
 322
 323         if (params.fflag){
 324                 if (tparams->fflag_handle)
 325                         /*
 326                          * in some cases, some additional processing needs
 327                          * to be done if fflag is defined
 328                          *
 329                          * For ex. fit_handle_file for Fit file support
 330                          */
 331                         retval = tparams->fflag_handle(&params);
 332
 333                 if (retval != EXIT_SUCCESS)
 334                         exit (retval);
 335         }
 336
 337         if (params.lflag || params.fflag) {
 338                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 339         } else {
 340                 ifd = open (params.imagefile,
 341                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 342         }
 343
 344         if (ifd < 0) {
 345                 fprintf (stderr, "%s: Can't open %s: %s\n",
 346                         params.cmdname, params.imagefile,
 347                         strerror(errno));
 348                 exit (EXIT_FAILURE);
 349         }
 350
 351         if (params.lflag || params.fflag) {
 352                 /*
 353                  * list header information of existing image
 354                  */
 355                 if (fstat(ifd, &sbuf) < 0) {
 356                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 357                                 params.cmdname, params.imagefile,
 358                                 strerror(errno));
 359                         exit (EXIT_FAILURE);
 360                 }
 361
 362                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 363                         fprintf (stderr,
 364                                 "%s: Bad size: \"%s\" is not valid image\n",
 365                                 params.cmdname, params.imagefile);
 366                         exit (EXIT_FAILURE);
 367                 }
 368
 369                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 370                 if (ptr == MAP_FAILED) {
 371                         fprintf (stderr, "%s: Can't read %s: %s\n",
 372                                 params.cmdname, params.imagefile,
 373                                 strerror(errno));
 374                         exit (EXIT_FAILURE);
 375                 }
 376
 377                 /*
 378                  * scan through mkimage registry for all supported image types
 379                  * and verify the input image file header for match
 380                  * Print the image information for matched image type
 381                  * Returns the error code if not matched
 382                  */
 383                 retval = imagetool_verify_print_header(ptr, &sbuf,
 384                                 tparams, &params);
 385
 386                 (void) munmap((void *)ptr, sbuf.st_size);
 387                 (void) close (ifd);
 388
 389                 exit (retval);
 390         }
 391
 392         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 393                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 394                 if (dfd < 0) {
 395                         fprintf(stderr, "%s: Can't open %s: %s\n",
 396                                 params.cmdname, params.datafile,
 397                                 strerror(errno));
 398                         exit(EXIT_FAILURE);
 399                 }
 400
 401                 if (fstat(dfd, &sbuf) < 0) {
 402                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 403                                 params.cmdname, params.datafile,
 404                                 strerror(errno));
 405                         exit(EXIT_FAILURE);
 406                 }
 407
 408                 params.file_size = sbuf.st_size + tparams->header_size;
 409                 close(dfd);
 410         }
 411
 412         /*
 413          * In case there an header with a variable
 414          * length will be added, the corresponding
 415          * function is called. This is responsible to
 416          * allocate memory for the header itself.
 417          */
 418         if (tparams->vrec_header)
 419                 pad_len = tparams->vrec_header(&params, tparams);
 420         else
 421                 memset(tparams->hdr, 0, tparams->header_size);
 422
 423         if (write(ifd, tparams->hdr, tparams->header_size)
 424                                         != tparams->header_size) {
 425                 fprintf (stderr, "%s: Write error on %s: %s\n",
 426                         params.cmdname, params.imagefile, strerror(errno));
 427                 exit (EXIT_FAILURE);
 428         }
 429
 430         if (!params.skipcpy) {
 431                 if (params.type == IH_TYPE_MULTI ||
 432                     params.type == IH_TYPE_SCRIPT) {
 433                         char *file = params.datafile;
 434                         uint32_t size;
 435
 436                         for (;;) {
 437                                 char *sep = NULL;
 438
 439                                 if (file) {
 440                                         if ((sep = strchr(file, ':')) != NULL) {
 441                                                 *sep = '\0';
 442                                         }
 443
 444                                         if (stat (file, &sbuf) < 0) {
 445                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 446                                                          params.cmdname, file, strerror(errno));
 447                                                 exit (EXIT_FAILURE);
 448                                         }
 449                                         size = cpu_to_uimage (sbuf.st_size);
 450                                 } else {
 451                                         size = 0;
 452                                 }
 453
 454                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 455                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 456                                                  params.cmdname, params.imagefile,
 457                                                  strerror(errno));
 458                                         exit (EXIT_FAILURE);
 459                                 }
 460
 461                                 if (!file) {
 462                                         break;
 463                                 }
 464
 465                                 if (sep) {
 466                                         *sep = ':';
 467                                         file = sep + 1;
 468                                 } else {
 469                                         file = NULL;
 470                                 }
 471                         }
 472
 473                         file = params.datafile;
 474
 475                         for (;;) {
 476                                 char *sep = strchr(file, ':');
 477                                 if (sep) {
 478                                         *sep = '\0';
 479                                         copy_file (ifd, file, 1);
 480                                         *sep++ = ':';
 481                                         file = sep;
 482                                 } else {
 483                                         copy_file (ifd, file, 0);
 484                                         break;
 485                                 }
 486                         }
 487                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 488                         /* PBL has special Image format, implements its' own */
 489                         pbl_load_uboot(ifd, &params);
 490                 } else {
 491                         copy_file(ifd, params.datafile, pad_len);
 492                 }
 493         }
 494
 495         /* We're a bit of paranoid */
 496 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 497    !defined(__sun__) && \
 498    !defined(__FreeBSD__) && \
 499    !defined(__OpenBSD__) && \
 500    !defined(__APPLE__)
 501         (void) fdatasync (ifd);
 502 #else
 503         (void) fsync (ifd);
 504 #endif
 505
 506         if (fstat(ifd, &sbuf) < 0) {
 507                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 508                         params.cmdname, params.imagefile, strerror(errno));
 509                 exit (EXIT_FAILURE);
 510         }
 511         params.file_size = sbuf.st_size;
 512
 513         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 514         if (ptr == MAP_FAILED) {
 515                 fprintf (stderr, "%s: Can't map %s: %s\n",
 516                         params.cmdname, params.imagefile, strerror(errno));
 517                 exit (EXIT_FAILURE);
 518         }
 519
 520         /* Setup the image header as per input image type*/
 521         if (tparams->set_header)
 522                 tparams->set_header (ptr, &sbuf, ifd, &params);
 523         else {
 524                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 525                         params.cmdname, tparams->name, strerror(errno));
 526                 exit (EXIT_FAILURE);
 527         }
 528
 529         /* Print the image information by processing image header */
 530         if (tparams->print_header)
 531                 tparams->print_header (ptr);
 532         else {
 533                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 534                         params.cmdname, tparams->name, strerror(errno));
 535                 exit (EXIT_FAILURE);
 536         }
 537
 538         (void) munmap((void *)ptr, sbuf.st_size);
 539
 540         /* We're a bit of paranoid */
 541 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 542    !defined(__sun__) && \
 543    !defined(__FreeBSD__) && \
 544    !defined(__OpenBSD__) && \
 545    !defined(__APPLE__)
 546         (void) fdatasync (ifd);
 547 #else
 548         (void) fsync (ifd);
 549 #endif
 550
 551         if (close(ifd)) {
 552                 fprintf (stderr, "%s: Write error on %s: %s\n",
 553                         params.cmdname, params.imagefile, strerror(errno));
 554                 exit (EXIT_FAILURE);
 555         }
 556
 557         exit (EXIT_SUCCESS);
 558 }
 559
 560 static void
 561 copy_file (int ifd, const char *datafile, int pad)
 562 {
 563         int dfd;
 564         struct stat sbuf;
 565         unsigned char *ptr;
 566         int tail;
 567         int zero = 0;
 568         uint8_t zeros[4096];
 569         int offset = 0;
 570         int size;
 571         struct image_type_params *tparams = imagetool_get_type(params.type);
 572
 573         memset(zeros, 0, sizeof(zeros));
 574
 575         if (params.vflag) {
 576                 fprintf (stderr, "Adding Image %s\n", datafile);
 577         }
 578
 579         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 580                 fprintf (stderr, "%s: Can't open %s: %s\n",
 581                         params.cmdname, datafile, strerror(errno));
 582                 exit (EXIT_FAILURE);
 583         }
 584
 585         if (fstat(dfd, &sbuf) < 0) {
 586                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 587                         params.cmdname, datafile, strerror(errno));
 588                 exit (EXIT_FAILURE);
 589         }
 590
 591         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 592         if (ptr == MAP_FAILED) {
 593                 fprintf (stderr, "%s: Can't read %s: %s\n",
 594                         params.cmdname, datafile, strerror(errno));
 595                 exit (EXIT_FAILURE);
 596         }
 597
 598         if (params.xflag) {
 599                 unsigned char *p = NULL;
 600                 /*
 601                  * XIP: do not append the image_header_t at the
 602                  * beginning of the file, but consume the space
 603                  * reserved for it.
 604                  */
 605
 606                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 607                         fprintf (stderr,
 608                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 609                                 params.cmdname, datafile);
 610                         exit (EXIT_FAILURE);
 611                 }
 612
 613                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 614                         if ( *p != 0xff ) {
 615                                 fprintf (stderr,
 616                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 617                                         params.cmdname, datafile);
 618                                 exit (EXIT_FAILURE);
 619                         }
 620                 }
 621
 622                 offset = tparams->header_size;
 623         }
 624
 625         size = sbuf.st_size - offset;
 626         if (write(ifd, ptr + offset, size) != size) {
 627                 fprintf (stderr, "%s: Write error on %s: %s\n",
 628                         params.cmdname, params.imagefile, strerror(errno));
 629                 exit (EXIT_FAILURE);
 630         }
 631
 632         tail = size % 4;
 633         if ((pad == 1) && (tail != 0)) {
 634
 635                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 636                         fprintf (stderr, "%s: Write error on %s: %s\n",
 637                                 params.cmdname, params.imagefile,
 638                                 strerror(errno));
 639                         exit (EXIT_FAILURE);
 640                 }
 641         } else if (pad > 1) {
 642                 while (pad > 0) {
 643                         int todo = sizeof(zeros);
 644
 645                         if (todo > pad)
 646                                 todo = pad;
 647                         if (write(ifd, (char *)&zeros, todo) != todo) {
 648                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 649                                         params.cmdname, params.imagefile,
 650                                         strerror(errno));
 651                                 exit(EXIT_FAILURE);
 652                         }
 653                         pad -= todo;
 654                 }
 655         }
 656
 657         (void) munmap((void *)ptr, sbuf.st_size);
 658         (void) close (dfd);
 659 }