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: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                         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 'E':
 184                         params.external_data = true;
 185                         break;
 186                 case 'f':
 187                         datafile = optarg;
 188                         params.auto_its = !strcmp(datafile, "auto");
 189                         /* no break */
 190                 case 'F':
 191                         /*
 192                          * The flattened image tree (FIT) format
 193                          * requires a flattened device tree image type
 194                          */
 195                         params.fit_image_type = params.type;
 196                         params.type = IH_TYPE_FLATDT;
 197                         params.fflag = 1;
 198                         break;
 199                 case 'k':
 200                         params.keydir = optarg;
 201                         break;
 202                 case 'K':
 203                         params.keydest = optarg;
 204                         break;
 205                 case 'l':
 206                         params.lflag = 1;
 207                         break;
 208                 case 'n':
 209                         params.imagename = optarg;
 210                         break;
 211                 case 'O':
 212                         params.os = genimg_get_os_id(optarg);
 213                         if (params.os < 0)
 214                                 usage("Invalid operating system");
 215                         break;
 216                 case 'r':
 217                         params.require_keys = 1;
 218                         break;
 219                 case 'R':
 220                         /*
 221                          * This entry is for the second configuration
 222                          * file, if only one is not enough.
 223                          */
 224                         params.imagename2 = optarg;
 225                         break;
 226                 case 's':
 227                         params.skipcpy = 1;
 228                         break;
 229                 case 'T':
 230                         type = genimg_get_type_id(optarg);
 231                         if (type < 0) {
 232                                 show_image_types();
 233                                 usage("Invalid image type");
 234                         }
 235                         expecting = type;
 236                         break;
 237                 case 'v':
 238                         params.vflag++;
 239                         break;
 240                 case 'V':
 241                         printf("mkimage version %s\n", PLAIN_VERSION);
 242                         exit(EXIT_SUCCESS);
 243                 case 'x':
 244                         params.xflag++;
 245                         break;
 246                 case 1:
 247                         if (expecting == type || optind == argc) {
 248                                 params.imagefile = optarg;
 249                                 expecting = IH_TYPE_INVALID;
 250                         } else if (expecting == IH_TYPE_INVALID) {
 251                                 fprintf(stderr,
 252                                         "%s: Unknown content type: use -b before device tree files",
 253                                         params.cmdname);
 254                                 exit(EXIT_FAILURE);
 255                         } else {
 256                                 if (add_content(expecting, optarg)) {
 257                                         fprintf(stderr,
 258                                                 "%s: Out of memory adding content '%s'",
 259                                                 params.cmdname, optarg);
 260                                         exit(EXIT_FAILURE);
 261                                 }
 262                         }
 263                         break;
 264                 default:
 265                         usage("Invalid option");
 266                 }
 267         }
 268
 269         /*
 270          * For auto-generated FIT images we need to know the image type to put
 271          * in the FIT, which is separate from the file's image type (which
 272          * will always be IH_TYPE_FLATDT in this case).
 273          */
 274         if (params.type == IH_TYPE_FLATDT) {
 275                 params.fit_image_type = type;
 276                 if (!params.auto_its)
 277                         params.datafile = datafile;
 278         } else if (type != IH_TYPE_INVALID) {
 279                 params.type = type;
 280         }
 281
 282         if (!params.imagefile)
 283                 usage("Missing output filename");
 284 }
 285
 286
 287 int main(int argc, char **argv)
 288 {
 289         int ifd = -1;
 290         struct stat sbuf;
 291         char *ptr;
 292         int retval = 0;
 293         struct image_type_params *tparams = NULL;
 294         int pad_len = 0;
 295         int dfd;
 296
 297         params.cmdname = *argv;
 298         params.addr = 0;
 299         params.ep = 0;
 300
 301         process_args(argc, argv);
 302
 303         /* set tparams as per input type_id */
 304         tparams = imagetool_get_type(params.type);
 305         if (tparams == NULL) {
 306                 fprintf (stderr, "%s: unsupported type %s\n",
 307                         params.cmdname, genimg_get_type_name(params.type));
 308                 exit (EXIT_FAILURE);
 309         }
 310
 311         /*
 312          * check the passed arguments parameters meets the requirements
 313          * as per image type to be generated/listed
 314          */
 315         if (tparams->check_params)
 316                 if (tparams->check_params (&params))
 317                         usage("Bad parameters for image type");
 318
 319         if (!params.eflag) {
 320                 params.ep = params.addr;
 321                 /* If XIP, entry point must be after the U-Boot header */
 322                 if (params.xflag)
 323                         params.ep += tparams->header_size;
 324         }
 325
 326         if (params.fflag){
 327                 if (tparams->fflag_handle)
 328                         /*
 329                          * in some cases, some additional processing needs
 330                          * to be done if fflag is defined
 331                          *
 332                          * For ex. fit_handle_file for Fit file support
 333                          */
 334                         retval = tparams->fflag_handle(&params);
 335
 336                 if (retval != EXIT_SUCCESS)
 337                         exit (retval);
 338         }
 339
 340         if (params.lflag || params.fflag) {
 341                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 342         } else {
 343                 ifd = open (params.imagefile,
 344                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 345         }
 346
 347         if (ifd < 0) {
 348                 fprintf (stderr, "%s: Can't open %s: %s\n",
 349                         params.cmdname, params.imagefile,
 350                         strerror(errno));
 351                 exit (EXIT_FAILURE);
 352         }
 353
 354         if (params.lflag || params.fflag) {
 355                 /*
 356                  * list header information of existing image
 357                  */
 358                 if (fstat(ifd, &sbuf) < 0) {
 359                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 360                                 params.cmdname, params.imagefile,
 361                                 strerror(errno));
 362                         exit (EXIT_FAILURE);
 363                 }
 364
 365                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 366                         fprintf (stderr,
 367                                 "%s: Bad size: \"%s\" is not valid image\n",
 368                                 params.cmdname, params.imagefile);
 369                         exit (EXIT_FAILURE);
 370                 }
 371
 372                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 373                 if (ptr == MAP_FAILED) {
 374                         fprintf (stderr, "%s: Can't read %s: %s\n",
 375                                 params.cmdname, params.imagefile,
 376                                 strerror(errno));
 377                         exit (EXIT_FAILURE);
 378                 }
 379
 380                 /*
 381                  * scan through mkimage registry for all supported image types
 382                  * and verify the input image file header for match
 383                  * Print the image information for matched image type
 384                  * Returns the error code if not matched
 385                  */
 386                 retval = imagetool_verify_print_header(ptr, &sbuf,
 387                                 tparams, &params);
 388
 389                 (void) munmap((void *)ptr, sbuf.st_size);
 390                 (void) close (ifd);
 391
 392                 exit (retval);
 393         }
 394
 395         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 396                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 397                 if (dfd < 0) {
 398                         fprintf(stderr, "%s: Can't open %s: %s\n",
 399                                 params.cmdname, params.datafile,
 400                                 strerror(errno));
 401                         exit(EXIT_FAILURE);
 402                 }
 403
 404                 if (fstat(dfd, &sbuf) < 0) {
 405                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 406                                 params.cmdname, params.datafile,
 407                                 strerror(errno));
 408                         exit(EXIT_FAILURE);
 409                 }
 410
 411                 params.file_size = sbuf.st_size + tparams->header_size;
 412                 close(dfd);
 413         }
 414
 415         /*
 416          * In case there an header with a variable
 417          * length will be added, the corresponding
 418          * function is called. This is responsible to
 419          * allocate memory for the header itself.
 420          */
 421         if (tparams->vrec_header)
 422                 pad_len = tparams->vrec_header(&params, tparams);
 423         else
 424                 memset(tparams->hdr, 0, tparams->header_size);
 425
 426         if (write(ifd, tparams->hdr, tparams->header_size)
 427                                         != tparams->header_size) {
 428                 fprintf (stderr, "%s: Write error on %s: %s\n",
 429                         params.cmdname, params.imagefile, strerror(errno));
 430                 exit (EXIT_FAILURE);
 431         }
 432
 433         if (!params.skipcpy) {
 434                 if (params.type == IH_TYPE_MULTI ||
 435                     params.type == IH_TYPE_SCRIPT) {
 436                         char *file = params.datafile;
 437                         uint32_t size;
 438
 439                         for (;;) {
 440                                 char *sep = NULL;
 441
 442                                 if (file) {
 443                                         if ((sep = strchr(file, ':')) != NULL) {
 444                                                 *sep = '\0';
 445                                         }
 446
 447                                         if (stat (file, &sbuf) < 0) {
 448                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 449                                                          params.cmdname, file, strerror(errno));
 450                                                 exit (EXIT_FAILURE);
 451                                         }
 452                                         size = cpu_to_uimage (sbuf.st_size);
 453                                 } else {
 454                                         size = 0;
 455                                 }
 456
 457                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 458                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 459                                                  params.cmdname, params.imagefile,
 460                                                  strerror(errno));
 461                                         exit (EXIT_FAILURE);
 462                                 }
 463
 464                                 if (!file) {
 465                                         break;
 466                                 }
 467
 468                                 if (sep) {
 469                                         *sep = ':';
 470                                         file = sep + 1;
 471                                 } else {
 472                                         file = NULL;
 473                                 }
 474                         }
 475
 476                         file = params.datafile;
 477
 478                         for (;;) {
 479                                 char *sep = strchr(file, ':');
 480                                 if (sep) {
 481                                         *sep = '\0';
 482                                         copy_file (ifd, file, 1);
 483                                         *sep++ = ':';
 484                                         file = sep;
 485                                 } else {
 486                                         copy_file (ifd, file, 0);
 487                                         break;
 488                                 }
 489                         }
 490                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 491                         /* PBL has special Image format, implements its' own */
 492                         pbl_load_uboot(ifd, &params);
 493                 } else {
 494                         copy_file(ifd, params.datafile, pad_len);
 495                 }
 496         }
 497
 498         /* We're a bit of paranoid */
 499 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 500    !defined(__sun__) && \
 501    !defined(__FreeBSD__) && \
 502    !defined(__OpenBSD__) && \
 503    !defined(__APPLE__)
 504         (void) fdatasync (ifd);
 505 #else
 506         (void) fsync (ifd);
 507 #endif
 508
 509         if (fstat(ifd, &sbuf) < 0) {
 510                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 511                         params.cmdname, params.imagefile, strerror(errno));
 512                 exit (EXIT_FAILURE);
 513         }
 514         params.file_size = sbuf.st_size;
 515
 516         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 517         if (ptr == MAP_FAILED) {
 518                 fprintf (stderr, "%s: Can't map %s: %s\n",
 519                         params.cmdname, params.imagefile, strerror(errno));
 520                 exit (EXIT_FAILURE);
 521         }
 522
 523         /* Setup the image header as per input image type*/
 524         if (tparams->set_header)
 525                 tparams->set_header (ptr, &sbuf, ifd, &params);
 526         else {
 527                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 528                         params.cmdname, tparams->name, strerror(errno));
 529                 exit (EXIT_FAILURE);
 530         }
 531
 532         /* Print the image information by processing image header */
 533         if (tparams->print_header)
 534                 tparams->print_header (ptr);
 535         else {
 536                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 537                         params.cmdname, tparams->name, strerror(errno));
 538                 exit (EXIT_FAILURE);
 539         }
 540
 541         (void) munmap((void *)ptr, sbuf.st_size);
 542
 543         /* We're a bit of paranoid */
 544 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 545    !defined(__sun__) && \
 546    !defined(__FreeBSD__) && \
 547    !defined(__OpenBSD__) && \
 548    !defined(__APPLE__)
 549         (void) fdatasync (ifd);
 550 #else
 551         (void) fsync (ifd);
 552 #endif
 553
 554         if (close(ifd)) {
 555                 fprintf (stderr, "%s: Write error on %s: %s\n",
 556                         params.cmdname, params.imagefile, strerror(errno));
 557                 exit (EXIT_FAILURE);
 558         }
 559
 560         exit (EXIT_SUCCESS);
 561 }
 562
 563 static void
 564 copy_file (int ifd, const char *datafile, int pad)
 565 {
 566         int dfd;
 567         struct stat sbuf;
 568         unsigned char *ptr;
 569         int tail;
 570         int zero = 0;
 571         uint8_t zeros[4096];
 572         int offset = 0;
 573         int size;
 574         struct image_type_params *tparams = imagetool_get_type(params.type);
 575
 576         memset(zeros, 0, sizeof(zeros));
 577
 578         if (params.vflag) {
 579                 fprintf (stderr, "Adding Image %s\n", datafile);
 580         }
 581
 582         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 583                 fprintf (stderr, "%s: Can't open %s: %s\n",
 584                         params.cmdname, datafile, strerror(errno));
 585                 exit (EXIT_FAILURE);
 586         }
 587
 588         if (fstat(dfd, &sbuf) < 0) {
 589                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 590                         params.cmdname, datafile, strerror(errno));
 591                 exit (EXIT_FAILURE);
 592         }
 593
 594         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 595         if (ptr == MAP_FAILED) {
 596                 fprintf (stderr, "%s: Can't read %s: %s\n",
 597                         params.cmdname, datafile, strerror(errno));
 598                 exit (EXIT_FAILURE);
 599         }
 600
 601         if (params.xflag) {
 602                 unsigned char *p = NULL;
 603                 /*
 604                  * XIP: do not append the image_header_t at the
 605                  * beginning of the file, but consume the space
 606                  * reserved for it.
 607                  */
 608
 609                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 610                         fprintf (stderr,
 611                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 612                                 params.cmdname, datafile);
 613                         exit (EXIT_FAILURE);
 614                 }
 615
 616                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 617                         if ( *p != 0xff ) {
 618                                 fprintf (stderr,
 619                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 620                                         params.cmdname, datafile);
 621                                 exit (EXIT_FAILURE);
 622                         }
 623                 }
 624
 625                 offset = tparams->header_size;
 626         }
 627
 628         size = sbuf.st_size - offset;
 629         if (write(ifd, ptr + offset, size) != size) {
 630                 fprintf (stderr, "%s: Write error on %s: %s\n",
 631                         params.cmdname, params.imagefile, strerror(errno));
 632                 exit (EXIT_FAILURE);
 633         }
 634
 635         tail = size % 4;
 636         if ((pad == 1) && (tail != 0)) {
 637
 638                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 639                         fprintf (stderr, "%s: Write error on %s: %s\n",
 640                                 params.cmdname, params.imagefile,
 641                                 strerror(errno));
 642                         exit (EXIT_FAILURE);
 643                 }
 644         } else if (pad > 1) {
 645                 while (pad > 0) {
 646                         int todo = sizeof(zeros);
 647
 648                         if (todo > pad)
 649                                 todo = pad;
 650                         if (write(ifd, (char *)&zeros, todo) != todo) {
 651                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 652                                         params.cmdname, params.imagefile,
 653                                         strerror(errno));
 654                                 exit(EXIT_FAILURE);
 655                         }
 656                         pad -= todo;
 657                 }
 658         }
 659
 660         (void) munmap((void *)ptr, sbuf.st_size);
 661         (void) close (dfd);
 662 }