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: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r]\n"
  97                 "          -E => place data outside of the FIT structure\n"
  98                 "          -k => set directory containing private keys\n"
  99                 "          -K => write public keys to this .dtb file\n"
 100                 "          -c => add comment in signature node\n"
 101                 "          -F => re-sign existing FIT image\n"
 102                 "          -p => place external data at a static position\n"
 103                 "          -r => mark keys used as 'required' in dtb\n");
 104 #else
 105         fprintf(stderr,
 106                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 107 #endif
 108         fprintf(stderr, "       %s -V ==> print version information and exit\n",
 109                 params.cmdname);
 110         fprintf(stderr, "Use -T to see a list of available image types\n");
 111
 112         exit(EXIT_FAILURE);
 113 }
 114
 115 static int add_content(int type, const char *fname)
 116 {
 117         struct content_info *cont;
 118
 119         cont = calloc(1, sizeof(*cont));
 120         if (!cont)
 121                 return -1;
 122         cont->type = type;
 123         cont->fname = fname;
 124         if (params.content_tail)
 125                 params.content_tail->next = cont;
 126         else
 127                 params.content_head = cont;
 128         params.content_tail = cont;
 129
 130         return 0;
 131 }
 132
 133 static void process_args(int argc, char **argv)
 134 {
 135         char *ptr;
 136         int type = IH_TYPE_INVALID;
 137         char *datafile = NULL;
 138         int opt;
 139
 140         while ((opt = getopt(argc, argv,
 141                              "a:A:b:cC:d:D:e:Ef:Fk:K:ln:p:O:rR:qsT: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                         if (add_content(IH_TYPE_FLATDT, optarg)) {
 158                                 fprintf(stderr,
 159                                         "%s: Out of memory adding content '%s'",
 160                                         params.cmdname, optarg);
 161                                 exit(EXIT_FAILURE);
 162                         }
 163                         break;
 164                 case 'c':
 165                         params.comment = optarg;
 166                         break;
 167                 case 'C':
 168                         params.comp = genimg_get_comp_id(optarg);
 169                         if (params.comp < 0)
 170                                 usage("Invalid compression type");
 171                         break;
 172                 case 'd':
 173                         params.datafile = optarg;
 174                         params.dflag = 1;
 175                         break;
 176                 case 'D':
 177                         params.dtc = optarg;
 178                         break;
 179                 case 'e':
 180                         params.ep = strtoull(optarg, &ptr, 16);
 181                         if (*ptr) {
 182                                 fprintf(stderr, "%s: invalid entry point %s\n",
 183                                         params.cmdname, optarg);
 184                                 exit(EXIT_FAILURE);
 185                         }
 186                         params.eflag = 1;
 187                         break;
 188                 case 'E':
 189                         params.external_data = true;
 190                         break;
 191                 case 'f':
 192                         datafile = optarg;
 193                         params.auto_its = !strcmp(datafile, "auto");
 194                         /* no break */
 195                 case 'F':
 196                         /*
 197                          * The flattened image tree (FIT) format
 198                          * requires a flattened device tree image type
 199                          */
 200                         params.fit_image_type = params.type;
 201                         params.type = IH_TYPE_FLATDT;
 202                         params.fflag = 1;
 203                         break;
 204                 case 'k':
 205                         params.keydir = optarg;
 206                         break;
 207                 case 'K':
 208                         params.keydest = optarg;
 209                         break;
 210                 case 'l':
 211                         params.lflag = 1;
 212                         break;
 213                 case 'n':
 214                         params.imagename = optarg;
 215                         break;
 216                 case 'O':
 217                         params.os = genimg_get_os_id(optarg);
 218                         if (params.os < 0)
 219                                 usage("Invalid operating system");
 220                         break;
 221                 case 'p':
 222                         params.external_offset = strtoull(optarg, &ptr, 16);
 223                         if (*ptr) {
 224                                 fprintf(stderr, "%s: invalid offset size %s\n",
 225                                         params.cmdname, optarg);
 226                                 exit(EXIT_FAILURE);
 227                         }
 228                 case 'q':
 229                         params.quiet = 1;
 230                         break;
 231                 case 'r':
 232                         params.require_keys = 1;
 233                         break;
 234                 case 'R':
 235                         /*
 236                          * This entry is for the second configuration
 237                          * file, if only one is not enough.
 238                          */
 239                         params.imagename2 = optarg;
 240                         break;
 241                 case 's':
 242                         params.skipcpy = 1;
 243                         break;
 244                 case 'T':
 245                         type = genimg_get_type_id(optarg);
 246                         if (type < 0) {
 247                                 show_image_types();
 248                                 usage("Invalid image type");
 249                         }
 250                         break;
 251                 case 'v':
 252                         params.vflag++;
 253                         break;
 254                 case 'V':
 255                         printf("mkimage version %s\n", PLAIN_VERSION);
 256                         exit(EXIT_SUCCESS);
 257                 case 'x':
 258                         params.xflag++;
 259                         break;
 260                 default:
 261                         usage("Invalid option");
 262                 }
 263         }
 264
 265         /* The last parameter is expected to be the imagefile */
 266         if (optind < argc)
 267                 params.imagefile = argv[optind];
 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 ? type : IH_TYPE_KERNEL;
 276                 /* For auto_its, datafile is always 'auto' */
 277                 if (!params.auto_its)
 278                         params.datafile = datafile;
 279         } else if (type != IH_TYPE_INVALID) {
 280                 params.type = type;
 281         }
 282
 283         if (!params.imagefile)
 284                 usage("Missing output filename");
 285 }
 286
 287
 288 int main(int argc, char **argv)
 289 {
 290         int ifd = -1;
 291         struct stat sbuf;
 292         char *ptr;
 293         int retval = 0;
 294         struct image_type_params *tparams = NULL;
 295         int pad_len = 0;
 296         int dfd;
 297
 298         params.cmdname = *argv;
 299         params.addr = 0;
 300         params.ep = 0;
 301
 302         process_args(argc, argv);
 303
 304         /* set tparams as per input type_id */
 305         tparams = imagetool_get_type(params.type);
 306         if (tparams == NULL) {
 307                 fprintf (stderr, "%s: unsupported type %s\n",
 308                         params.cmdname, genimg_get_type_name(params.type));
 309                 exit (EXIT_FAILURE);
 310         }
 311
 312         /*
 313          * check the passed arguments parameters meets the requirements
 314          * as per image type to be generated/listed
 315          */
 316         if (tparams->check_params)
 317                 if (tparams->check_params (&params))
 318                         usage("Bad parameters for image type");
 319
 320         if (!params.eflag) {
 321                 params.ep = params.addr;
 322                 /* If XIP, entry point must be after the U-Boot header */
 323                 if (params.xflag)
 324                         params.ep += tparams->header_size;
 325         }
 326
 327         if (params.fflag){
 328                 if (tparams->fflag_handle)
 329                         /*
 330                          * in some cases, some additional processing needs
 331                          * to be done if fflag is defined
 332                          *
 333                          * For ex. fit_handle_file for Fit file support
 334                          */
 335                         retval = tparams->fflag_handle(&params);
 336
 337                 if (retval != EXIT_SUCCESS)
 338                         exit (retval);
 339         }
 340
 341         if (params.lflag || params.fflag) {
 342                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 343         } else {
 344                 ifd = open (params.imagefile,
 345                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 346         }
 347
 348         if (ifd < 0) {
 349                 fprintf (stderr, "%s: Can't open %s: %s\n",
 350                         params.cmdname, params.imagefile,
 351                         strerror(errno));
 352                 exit (EXIT_FAILURE);
 353         }
 354
 355         if (params.lflag || params.fflag) {
 356                 /*
 357                  * list header information of existing image
 358                  */
 359                 if (fstat(ifd, &sbuf) < 0) {
 360                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 361                                 params.cmdname, params.imagefile,
 362                                 strerror(errno));
 363                         exit (EXIT_FAILURE);
 364                 }
 365
 366                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 367                         fprintf (stderr,
 368                                 "%s: Bad size: \"%s\" is not valid image\n",
 369                                 params.cmdname, params.imagefile);
 370                         exit (EXIT_FAILURE);
 371                 }
 372
 373                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 374                 if (ptr == MAP_FAILED) {
 375                         fprintf (stderr, "%s: Can't read %s: %s\n",
 376                                 params.cmdname, params.imagefile,
 377                                 strerror(errno));
 378                         exit (EXIT_FAILURE);
 379                 }
 380
 381                 /*
 382                  * scan through mkimage registry for all supported image types
 383                  * and verify the input image file header for match
 384                  * Print the image information for matched image type
 385                  * Returns the error code if not matched
 386                  */
 387                 retval = imagetool_verify_print_header(ptr, &sbuf,
 388                                 tparams, &params);
 389
 390                 (void) munmap((void *)ptr, sbuf.st_size);
 391                 (void) close (ifd);
 392
 393                 exit (retval);
 394         }
 395
 396         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 397                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 398                 if (dfd < 0) {
 399                         fprintf(stderr, "%s: Can't open %s: %s\n",
 400                                 params.cmdname, params.datafile,
 401                                 strerror(errno));
 402                         exit(EXIT_FAILURE);
 403                 }
 404
 405                 if (fstat(dfd, &sbuf) < 0) {
 406                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 407                                 params.cmdname, params.datafile,
 408                                 strerror(errno));
 409                         exit(EXIT_FAILURE);
 410                 }
 411
 412                 params.file_size = sbuf.st_size + tparams->header_size;
 413                 close(dfd);
 414         }
 415
 416         /*
 417          * In case there an header with a variable
 418          * length will be added, the corresponding
 419          * function is called. This is responsible to
 420          * allocate memory for the header itself.
 421          */
 422         if (tparams->vrec_header)
 423                 pad_len = tparams->vrec_header(&params, tparams);
 424         else
 425                 memset(tparams->hdr, 0, tparams->header_size);
 426
 427         if (write(ifd, tparams->hdr, tparams->header_size)
 428                                         != tparams->header_size) {
 429                 fprintf (stderr, "%s: Write error on %s: %s\n",
 430                         params.cmdname, params.imagefile, strerror(errno));
 431                 exit (EXIT_FAILURE);
 432         }
 433
 434         if (!params.skipcpy) {
 435                 if (params.type == IH_TYPE_MULTI ||
 436                     params.type == IH_TYPE_SCRIPT) {
 437                         char *file = params.datafile;
 438                         uint32_t size;
 439
 440                         for (;;) {
 441                                 char *sep = NULL;
 442
 443                                 if (file) {
 444                                         if ((sep = strchr(file, ':')) != NULL) {
 445                                                 *sep = '\0';
 446                                         }
 447
 448                                         if (stat (file, &sbuf) < 0) {
 449                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 450                                                          params.cmdname, file, strerror(errno));
 451                                                 exit (EXIT_FAILURE);
 452                                         }
 453                                         size = cpu_to_uimage (sbuf.st_size);
 454                                 } else {
 455                                         size = 0;
 456                                 }
 457
 458                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 459                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 460                                                  params.cmdname, params.imagefile,
 461                                                  strerror(errno));
 462                                         exit (EXIT_FAILURE);
 463                                 }
 464
 465                                 if (!file) {
 466                                         break;
 467                                 }
 468
 469                                 if (sep) {
 470                                         *sep = ':';
 471                                         file = sep + 1;
 472                                 } else {
 473                                         file = NULL;
 474                                 }
 475                         }
 476
 477                         file = params.datafile;
 478
 479                         for (;;) {
 480                                 char *sep = strchr(file, ':');
 481                                 if (sep) {
 482                                         *sep = '\0';
 483                                         copy_file (ifd, file, 1);
 484                                         *sep++ = ':';
 485                                         file = sep;
 486                                 } else {
 487                                         copy_file (ifd, file, 0);
 488                                         break;
 489                                 }
 490                         }
 491                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 492                         /* PBL has special Image format, implements its' own */
 493                         pbl_load_uboot(ifd, &params);
 494                 } else {
 495                         copy_file(ifd, params.datafile, pad_len);
 496                 }
 497         }
 498
 499         /* We're a bit of paranoid */
 500 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 501    !defined(__sun__) && \
 502    !defined(__FreeBSD__) && \
 503    !defined(__OpenBSD__) && \
 504    !defined(__APPLE__)
 505         (void) fdatasync (ifd);
 506 #else
 507         (void) fsync (ifd);
 508 #endif
 509
 510         if (fstat(ifd, &sbuf) < 0) {
 511                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 512                         params.cmdname, params.imagefile, strerror(errno));
 513                 exit (EXIT_FAILURE);
 514         }
 515         params.file_size = sbuf.st_size;
 516
 517         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 518         if (ptr == MAP_FAILED) {
 519                 fprintf (stderr, "%s: Can't map %s: %s\n",
 520                         params.cmdname, params.imagefile, strerror(errno));
 521                 exit (EXIT_FAILURE);
 522         }
 523
 524         /* Setup the image header as per input image type*/
 525         if (tparams->set_header)
 526                 tparams->set_header (ptr, &sbuf, ifd, &params);
 527         else {
 528                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 529                         params.cmdname, tparams->name, strerror(errno));
 530                 exit (EXIT_FAILURE);
 531         }
 532
 533         /* Print the image information by processing image header */
 534         if (tparams->print_header)
 535                 tparams->print_header (ptr);
 536         else {
 537                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
 538                         params.cmdname, tparams->name, strerror(errno));
 539                 exit (EXIT_FAILURE);
 540         }
 541
 542         (void) munmap((void *)ptr, sbuf.st_size);
 543
 544         /* We're a bit of paranoid */
 545 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 546    !defined(__sun__) && \
 547    !defined(__FreeBSD__) && \
 548    !defined(__OpenBSD__) && \
 549    !defined(__APPLE__)
 550         (void) fdatasync (ifd);
 551 #else
 552         (void) fsync (ifd);
 553 #endif
 554
 555         if (close(ifd)) {
 556                 fprintf (stderr, "%s: Write error on %s: %s\n",
 557                         params.cmdname, params.imagefile, strerror(errno));
 558                 exit (EXIT_FAILURE);
 559         }
 560
 561         exit (EXIT_SUCCESS);
 562 }
 563
 564 static void
 565 copy_file (int ifd, const char *datafile, int pad)
 566 {
 567         int dfd;
 568         struct stat sbuf;
 569         unsigned char *ptr;
 570         int tail;
 571         int zero = 0;
 572         uint8_t zeros[4096];
 573         int offset = 0;
 574         int size;
 575         struct image_type_params *tparams = imagetool_get_type(params.type);
 576
 577         memset(zeros, 0, sizeof(zeros));
 578
 579         if (params.vflag) {
 580                 fprintf (stderr, "Adding Image %s\n", datafile);
 581         }
 582
 583         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 584                 fprintf (stderr, "%s: Can't open %s: %s\n",
 585                         params.cmdname, datafile, strerror(errno));
 586                 exit (EXIT_FAILURE);
 587         }
 588
 589         if (fstat(dfd, &sbuf) < 0) {
 590                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 591                         params.cmdname, datafile, strerror(errno));
 592                 exit (EXIT_FAILURE);
 593         }
 594
 595         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 596         if (ptr == MAP_FAILED) {
 597                 fprintf (stderr, "%s: Can't read %s: %s\n",
 598                         params.cmdname, datafile, strerror(errno));
 599                 exit (EXIT_FAILURE);
 600         }
 601
 602         if (params.xflag) {
 603                 unsigned char *p = NULL;
 604                 /*
 605                  * XIP: do not append the image_header_t at the
 606                  * beginning of the file, but consume the space
 607                  * reserved for it.
 608                  */
 609
 610                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 611                         fprintf (stderr,
 612                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 613                                 params.cmdname, datafile);
 614                         exit (EXIT_FAILURE);
 615                 }
 616
 617                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 618                         if ( *p != 0xff ) {
 619                                 fprintf (stderr,
 620                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 621                                         params.cmdname, datafile);
 622                                 exit (EXIT_FAILURE);
 623                         }
 624                 }
 625
 626                 offset = tparams->header_size;
 627         }
 628
 629         size = sbuf.st_size - offset;
 630         if (write(ifd, ptr + offset, size) != size) {
 631                 fprintf (stderr, "%s: Write error on %s: %s\n",
 632                         params.cmdname, params.imagefile, strerror(errno));
 633                 exit (EXIT_FAILURE);
 634         }
 635
 636         tail = size % 4;
 637         if ((pad == 1) && (tail != 0)) {
 638
 639                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 640                         fprintf (stderr, "%s: Write error on %s: %s\n",
 641                                 params.cmdname, params.imagefile,
 642                                 strerror(errno));
 643                         exit (EXIT_FAILURE);
 644                 }
 645         } else if (pad > 1) {
 646                 while (pad > 0) {
 647                         int todo = sizeof(zeros);
 648
 649                         if (todo > pad)
 650                                 todo = pad;
 651                         if (write(ifd, (char *)&zeros, todo) != todo) {
 652                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 653                                         params.cmdname, params.imagefile,
 654                                         strerror(errno));
 655                                 exit(EXIT_FAILURE);
 656                         }
 657                         pad -= todo;
 658                 }
 659         }
 660
 661         (void) munmap((void *)ptr, sbuf.st_size);
 662         (void) close (dfd);
 663 }