tools/mkimage.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2008 Semihalf
   4  *
   5  * (C) Copyright 2000-2009
   6  * DENX Software Engineering
   7  * Wolfgang Denk, wd@denx.de
   8  */
   9
  10 #include "imagetool.h"
  11 #include "mkimage.h"
  12 #include "imximage.h"
  13 #include <image.h>
  14 #include <version.h>
  15
  16 static void copy_file(int, const char *, int);
  17
  18 /* parameters initialized by core will be used by the image type code */
  19 static struct image_tool_params params = {
  20         .os = IH_OS_LINUX,
  21         .arch = IH_ARCH_PPC,
  22         .type = IH_TYPE_KERNEL,
  23         .comp = IH_COMP_GZIP,
  24         .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
  25         .imagename = "",
  26         .imagename2 = "",
  27 };
  28
  29 static enum ih_category cur_category;
  30
  31 static int h_compare_category_name(const void *vtype1, const void *vtype2)
  32 {
  33         const int *type1 = vtype1;
  34         const int *type2 = vtype2;
  35         const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
  36         const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
  37
  38         return strcmp(name1, name2);
  39 }
  40
  41 static int show_valid_options(enum ih_category category)
  42 {
  43         int *order;
  44         int count;
  45         int item;
  46         int i;
  47
  48         count = genimg_get_cat_count(category);
  49         order = calloc(count, sizeof(*order));
  50         if (!order)
  51                 return -ENOMEM;
  52
  53         /* Sort the names in order of short name for easier reading */
  54         for (item = 0; item < count; item++)
  55                 order[item] = item;
  56         cur_category = category;
  57         qsort(order, count, sizeof(int), h_compare_category_name);
  58
  59         fprintf(stderr, "\nInvalid %s, supported are:\n",
  60                 genimg_get_cat_desc(category));
  61         for (i = 0; i < count; i++) {
  62                 item = order[i];
  63                 fprintf(stderr, "\t%-15s  %s\n",
  64                         genimg_get_cat_short_name(category, item),
  65                         genimg_get_cat_name(category, item));
  66         }
  67         fprintf(stderr, "\n");
  68         free(order);
  69
  70         return 0;
  71 }
  72
  73 static void usage(const char *msg)
  74 {
  75         fprintf(stderr, "Error: %s\n", msg);
  76         fprintf(stderr, "Usage: %s -l image\n"
  77                          "          -l ==> list image header information\n",
  78                 params.cmdname);
  79         fprintf(stderr,
  80                 "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
  81                 "          -A ==> set architecture to 'arch'\n"
  82                 "          -O ==> set operating system to 'os'\n"
  83                 "          -T ==> set image type to 'type'\n"
  84                 "          -C ==> set compression type 'comp'\n"
  85                 "          -a ==> set load address to 'addr' (hex)\n"
  86                 "          -e ==> set entry point to 'ep' (hex)\n"
  87                 "          -n ==> set image name to 'name'\n"
  88                 "          -d ==> use image data from 'datafile'\n"
  89                 "          -x ==> set XIP (execute in place)\n",
  90                 params.cmdname);
  91         fprintf(stderr,
  92                 "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-i <ramdisk.cpio.gz>] fit-image\n"
  93                 "           <dtb> file is used with -f auto, it may occur multiple times.\n",
  94                 params.cmdname);
  95         fprintf(stderr,
  96                 "          -D => set all options for device tree compiler\n"
  97                 "          -f => input filename for FIT source\n"
  98                 "          -i => input filename for ramdisk file\n");
  99 #ifdef CONFIG_FIT_SIGNATURE
 100         fprintf(stderr,
 101                 "Signing / verified boot options: [-E] [-B size] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
 102                 "          -E => place data outside of the FIT structure\n"
 103                 "          -B => align size in hex for FIT structure and header\n"
 104                 "          -k => set directory containing private keys\n"
 105                 "          -K => write public keys to this .dtb file\n"
 106                 "          -c => add comment in signature node\n"
 107                 "          -F => re-sign existing FIT image\n"
 108                 "          -p => place external data at a static position\n"
 109                 "          -r => mark keys used as 'required' in dtb\n"
 110                 "          -N => openssl engine to use for signing\n");
 111 #else
 112         fprintf(stderr,
 113                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 114 #endif
 115         fprintf(stderr, "       %s -V ==> print version information and exit\n",
 116                 params.cmdname);
 117         fprintf(stderr, "Use '-T list' to see a list of available image types\n");
 118
 119         exit(EXIT_FAILURE);
 120 }
 121
 122 static int add_content(int type, const char *fname)
 123 {
 124         struct content_info *cont;
 125
 126         cont = calloc(1, sizeof(*cont));
 127         if (!cont)
 128                 return -1;
 129         cont->type = type;
 130         cont->fname = fname;
 131         if (params.content_tail)
 132                 params.content_tail->next = cont;
 133         else
 134                 params.content_head = cont;
 135         params.content_tail = cont;
 136
 137         return 0;
 138 }
 139
 140 static void process_args(int argc, char **argv)
 141 {
 142         char *ptr;
 143         int type = IH_TYPE_INVALID;
 144         char *datafile = NULL;
 145         int opt;
 146
 147         while ((opt = getopt(argc, argv,
 148                    "a:A:b:B:c:C:d:D:e:Ef:Fk:i:K:ln:N:p:O:rR:qstT:vVx")) != -1) {
 149                 switch (opt) {
 150                 case 'a':
 151                         params.addr = strtoull(optarg, &ptr, 16);
 152                         if (*ptr) {
 153                                 fprintf(stderr, "%s: invalid load address %s\n",
 154                                         params.cmdname, optarg);
 155                                 exit(EXIT_FAILURE);
 156                         }
 157                         break;
 158                 case 'A':
 159                         params.arch = genimg_get_arch_id(optarg);
 160                         if (params.arch < 0) {
 161                                 show_valid_options(IH_ARCH);
 162                                 usage("Invalid architecture");
 163                         }
 164                         break;
 165                 case 'b':
 166                         if (add_content(IH_TYPE_FLATDT, optarg)) {
 167                                 fprintf(stderr,
 168                                         "%s: Out of memory adding content '%s'",
 169                                         params.cmdname, optarg);
 170                                 exit(EXIT_FAILURE);
 171                         }
 172                         break;
 173                 case 'B':
 174                         params.bl_len = strtoull(optarg, &ptr, 16);
 175                         if (*ptr) {
 176                                 fprintf(stderr, "%s: invalid block length %s\n",
 177                                         params.cmdname, optarg);
 178                                 exit(EXIT_FAILURE);
 179                         }
 180
 181                         break;
 182                 case 'c':
 183                         params.comment = optarg;
 184                         break;
 185                 case 'C':
 186                         params.comp = genimg_get_comp_id(optarg);
 187                         if (params.comp < 0) {
 188                                 show_valid_options(IH_COMP);
 189                                 usage("Invalid compression type");
 190                         }
 191                         break;
 192                 case 'd':
 193                         params.datafile = optarg;
 194                         params.dflag = 1;
 195                         break;
 196                 case 'D':
 197                         params.dtc = optarg;
 198                         break;
 199                 case 'e':
 200                         params.ep = strtoull(optarg, &ptr, 16);
 201                         if (*ptr) {
 202                                 fprintf(stderr, "%s: invalid entry point %s\n",
 203                                         params.cmdname, optarg);
 204                                 exit(EXIT_FAILURE);
 205                         }
 206                         params.eflag = 1;
 207                         break;
 208                 case 'E':
 209                         params.external_data = true;
 210                         break;
 211                 case 'f':
 212                         datafile = optarg;
 213                         params.auto_its = !strcmp(datafile, "auto");
 214                         /* fallthrough */
 215                 case 'F':
 216                         /*
 217                          * The flattened image tree (FIT) format
 218                          * requires a flattened device tree image type
 219                          */
 220                         params.type = IH_TYPE_FLATDT;
 221                         params.fflag = 1;
 222                         break;
 223                 case 'i':
 224                         params.fit_ramdisk = optarg;
 225                         break;
 226                 case 'k':
 227                         params.keydir = optarg;
 228                         break;
 229                 case 'K':
 230                         params.keydest = optarg;
 231                         break;
 232                 case 'l':
 233                         params.lflag = 1;
 234                         break;
 235                 case 'n':
 236                         params.imagename = optarg;
 237                         break;
 238                 case 'N':
 239                         params.engine_id = optarg;
 240                         break;
 241                 case 'O':
 242                         params.os = genimg_get_os_id(optarg);
 243                         if (params.os < 0) {
 244                                 show_valid_options(IH_OS);
 245                                 usage("Invalid operating system");
 246                         }
 247                         break;
 248                 case 'p':
 249                         params.external_offset = strtoull(optarg, &ptr, 16);
 250                         if (*ptr) {
 251                                 fprintf(stderr, "%s: invalid offset size %s\n",
 252                                         params.cmdname, optarg);
 253                                 exit(EXIT_FAILURE);
 254                         }
 255                         break;
 256                 case 'q':
 257                         params.quiet = 1;
 258                         break;
 259                 case 'r':
 260                         params.require_keys = 1;
 261                         break;
 262                 case 'R':
 263                         /*
 264                          * This entry is for the second configuration
 265                          * file, if only one is not enough.
 266                          */
 267                         params.imagename2 = optarg;
 268                         break;
 269                 case 's':
 270                         params.skipcpy = 1;
 271                         break;
 272                 case 't':
 273                         params.reset_timestamp = 1;
 274                         break;
 275                 case 'T':
 276                         if (strcmp(optarg, "list") == 0) {
 277                                 show_valid_options(IH_TYPE);
 278                                 exit(EXIT_SUCCESS);
 279                         }
 280                         type = genimg_get_type_id(optarg);
 281                         if (type < 0) {
 282                                 show_valid_options(IH_TYPE);
 283                                 usage("Invalid image type");
 284                         }
 285                         break;
 286                 case 'v':
 287                         params.vflag++;
 288                         break;
 289                 case 'V':
 290                         printf("mkimage version %s\n", PLAIN_VERSION);
 291                         exit(EXIT_SUCCESS);
 292                 case 'x':
 293                         params.xflag++;
 294                         break;
 295                 default:
 296                         usage("Invalid option");
 297                 }
 298         }
 299
 300         /* The last parameter is expected to be the imagefile */
 301         if (optind < argc)
 302                 params.imagefile = argv[optind];
 303
 304         /*
 305          * For auto-generated FIT images we need to know the image type to put
 306          * in the FIT, which is separate from the file's image type (which
 307          * will always be IH_TYPE_FLATDT in this case).
 308          */
 309         if (params.type == IH_TYPE_FLATDT) {
 310                 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
 311                 /* For auto_its, datafile is always 'auto' */
 312                 if (!params.auto_its)
 313                         params.datafile = datafile;
 314                 else if (!params.datafile)
 315                         usage("Missing data file for auto-FIT (use -d)");
 316         } else if (type != IH_TYPE_INVALID) {
 317                 if (type == IH_TYPE_SCRIPT && !params.datafile)
 318                         usage("Missing data file for script (use -d)");
 319                 params.type = type;
 320         }
 321
 322         if (!params.imagefile)
 323                 usage("Missing output filename");
 324 }
 325
 326 int main(int argc, char **argv)
 327 {
 328         int ifd = -1;
 329         struct stat sbuf;
 330         char *ptr;
 331         int retval = 0;
 332         struct image_type_params *tparams = NULL;
 333         int pad_len = 0;
 334         int dfd;
 335         size_t map_len;
 336
 337         params.cmdname = *argv;
 338         params.addr = 0;
 339         params.ep = 0;
 340
 341         process_args(argc, argv);
 342
 343         /* set tparams as per input type_id */
 344         tparams = imagetool_get_type(params.type);
 345         if (tparams == NULL) {
 346                 fprintf (stderr, "%s: unsupported type %s\n",
 347                         params.cmdname, genimg_get_type_name(params.type));
 348                 exit (EXIT_FAILURE);
 349         }
 350
 351         /*
 352          * check the passed arguments parameters meets the requirements
 353          * as per image type to be generated/listed
 354          */
 355         if (tparams->check_params)
 356                 if (tparams->check_params (&params))
 357                         usage("Bad parameters for image type");
 358
 359         if (!params.eflag) {
 360                 params.ep = params.addr;
 361                 /* If XIP, entry point must be after the U-Boot header */
 362                 if (params.xflag)
 363                         params.ep += tparams->header_size;
 364         }
 365
 366         if (params.fflag){
 367                 if (tparams->fflag_handle)
 368                         /*
 369                          * in some cases, some additional processing needs
 370                          * to be done if fflag is defined
 371                          *
 372                          * For ex. fit_handle_file for Fit file support
 373                          */
 374                         retval = tparams->fflag_handle(&params);
 375
 376                 if (retval != EXIT_SUCCESS)
 377                         exit (retval);
 378         }
 379
 380         if (params.lflag || params.fflag) {
 381                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 382         } else {
 383                 ifd = open (params.imagefile,
 384                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 385         }
 386
 387         if (ifd < 0) {
 388                 fprintf (stderr, "%s: Can't open %s: %s\n",
 389                         params.cmdname, params.imagefile,
 390                         strerror(errno));
 391                 exit (EXIT_FAILURE);
 392         }
 393
 394         if (params.lflag || params.fflag) {
 395                 /*
 396                  * list header information of existing image
 397                  */
 398                 if (fstat(ifd, &sbuf) < 0) {
 399                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 400                                 params.cmdname, params.imagefile,
 401                                 strerror(errno));
 402                         exit (EXIT_FAILURE);
 403                 }
 404
 405                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 406                         fprintf (stderr,
 407                                 "%s: Bad size: \"%s\" is not valid image\n",
 408                                 params.cmdname, params.imagefile);
 409                         exit (EXIT_FAILURE);
 410                 }
 411
 412                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 413                 if (ptr == MAP_FAILED) {
 414                         fprintf (stderr, "%s: Can't read %s: %s\n",
 415                                 params.cmdname, params.imagefile,
 416                                 strerror(errno));
 417                         exit (EXIT_FAILURE);
 418                 }
 419
 420                 if (params.fflag) {
 421                         /*
 422                          * Verifies the header format based on the expected header for image
 423                          * type in tparams
 424                          */
 425                         retval = imagetool_verify_print_header_by_type(ptr, &sbuf,
 426                                         tparams, &params);
 427                 } else {
 428                         /**
 429                          * When listing the image, we are not given the image type. Simply check all
 430                          * image types to find one that matches our header
 431                          */
 432                         retval = imagetool_verify_print_header(ptr, &sbuf,
 433                                         tparams, &params);
 434                 }
 435
 436                 (void) munmap((void *)ptr, sbuf.st_size);
 437                 (void) close (ifd);
 438
 439                 exit (retval);
 440         }
 441
 442         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 443                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 444                 if (dfd < 0) {
 445                         fprintf(stderr, "%s: Can't open %s: %s\n",
 446                                 params.cmdname, params.datafile,
 447                                 strerror(errno));
 448                         exit(EXIT_FAILURE);
 449                 }
 450
 451                 if (fstat(dfd, &sbuf) < 0) {
 452                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 453                                 params.cmdname, params.datafile,
 454                                 strerror(errno));
 455                         exit(EXIT_FAILURE);
 456                 }
 457
 458                 params.file_size = sbuf.st_size + tparams->header_size;
 459                 close(dfd);
 460         }
 461
 462         /*
 463          * In case there an header with a variable
 464          * length will be added, the corresponding
 465          * function is called. This is responsible to
 466          * allocate memory for the header itself.
 467          */
 468         if (tparams->vrec_header)
 469                 pad_len = tparams->vrec_header(&params, tparams);
 470         else
 471                 memset(tparams->hdr, 0, tparams->header_size);
 472
 473         if (write(ifd, tparams->hdr, tparams->header_size)
 474                                         != tparams->header_size) {
 475                 fprintf (stderr, "%s: Write error on %s: %s\n",
 476                         params.cmdname, params.imagefile, strerror(errno));
 477                 exit (EXIT_FAILURE);
 478         }
 479
 480         if (!params.skipcpy) {
 481                 if (params.type == IH_TYPE_MULTI ||
 482                     params.type == IH_TYPE_SCRIPT) {
 483                         char *file = params.datafile;
 484                         uint32_t size;
 485
 486                         for (;;) {
 487                                 char *sep = NULL;
 488
 489                                 if (file) {
 490                                         if ((sep = strchr(file, ':')) != NULL) {
 491                                                 *sep = '\0';
 492                                         }
 493
 494                                         if (stat (file, &sbuf) < 0) {
 495                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 496                                                          params.cmdname, file, strerror(errno));
 497                                                 exit (EXIT_FAILURE);
 498                                         }
 499                                         size = cpu_to_uimage (sbuf.st_size);
 500                                 } else {
 501                                         size = 0;
 502                                 }
 503
 504                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 505                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 506                                                  params.cmdname, params.imagefile,
 507                                                  strerror(errno));
 508                                         exit (EXIT_FAILURE);
 509                                 }
 510
 511                                 if (!file) {
 512                                         break;
 513                                 }
 514
 515                                 if (sep) {
 516                                         *sep = ':';
 517                                         file = sep + 1;
 518                                 } else {
 519                                         file = NULL;
 520                                 }
 521                         }
 522
 523                         file = params.datafile;
 524
 525                         for (;;) {
 526                                 char *sep = strchr(file, ':');
 527                                 if (sep) {
 528                                         *sep = '\0';
 529                                         copy_file (ifd, file, 1);
 530                                         *sep++ = ':';
 531                                         file = sep;
 532                                 } else {
 533                                         copy_file (ifd, file, 0);
 534                                         break;
 535                                 }
 536                         }
 537                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 538                         /* PBL has special Image format, implements its' own */
 539                         pbl_load_uboot(ifd, &params);
 540                 } else if (params.type == IH_TYPE_ZYNQMPBIF) {
 541                         /* Image file is meta, walk through actual targets */
 542                         int ret;
 543
 544                         ret = zynqmpbif_copy_image(ifd, &params);
 545                         if (ret)
 546                                 return ret;
 547                 } else if (params.type == IH_TYPE_IMX8IMAGE) {
 548                         /* i.MX8/8X has special Image format */
 549                         int ret;
 550
 551                         ret = imx8image_copy_image(ifd, &params);
 552                         if (ret)
 553                                 return ret;
 554                 } else if (params.type == IH_TYPE_IMX8MIMAGE) {
 555                         /* i.MX8M has special Image format */
 556                         int ret;
 557
 558                         ret = imx8mimage_copy_image(ifd, &params);
 559                         if (ret)
 560                                 return ret;
 561                 } else if ((params.type == IH_TYPE_RKSD) ||
 562                                 (params.type == IH_TYPE_RKSPI)) {
 563                         /* Rockchip has special Image format */
 564                         int ret;
 565
 566                         ret = rockchip_copy_image(ifd, &params);
 567                         if (ret)
 568                                 return ret;
 569                 } else {
 570                         copy_file(ifd, params.datafile, pad_len);
 571                 }
 572                 if (params.type == IH_TYPE_FIRMWARE_IVT) {
 573                         /* Add alignment and IVT */
 574                         uint32_t aligned_filesize = ALIGN(params.file_size,
 575                                                           0x1000);
 576                         flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
 577                                         params.addr, 0, 0, 0, params.addr
 578                                                         + aligned_filesize
 579                                                         - tparams->header_size,
 580                                         params.addr + aligned_filesize
 581                                                         - tparams->header_size
 582                                                         + 0x20, 0 };
 583                         int i = params.file_size;
 584                         for (; i < aligned_filesize; i++) {
 585                                 if (write(ifd, (char *) &i, 1) != 1) {
 586                                         fprintf(stderr,
 587                                                         "%s: Write error on %s: %s\n",
 588                                                         params.cmdname,
 589                                                         params.imagefile,
 590                                                         strerror(errno));
 591                                         exit(EXIT_FAILURE);
 592                                 }
 593                         }
 594                         if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
 595                                         != sizeof(flash_header_v2_t)) {
 596                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 597                                                 params.cmdname,
 598                                                 params.imagefile,
 599                                                 strerror(errno));
 600                                 exit(EXIT_FAILURE);
 601                         }
 602                 }
 603         }
 604
 605         /* We're a bit of paranoid */
 606 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 607    !defined(__sun__) && \
 608    !defined(__FreeBSD__) && \
 609    !defined(__OpenBSD__) && \
 610    !defined(__APPLE__)
 611         (void) fdatasync (ifd);
 612 #else
 613         (void) fsync (ifd);
 614 #endif
 615
 616         if (fstat(ifd, &sbuf) < 0) {
 617                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 618                         params.cmdname, params.imagefile, strerror(errno));
 619                 exit (EXIT_FAILURE);
 620         }
 621         params.file_size = sbuf.st_size;
 622
 623         map_len = sbuf.st_size;
 624         ptr = mmap(0, map_len, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
 625         if (ptr == MAP_FAILED) {
 626                 fprintf (stderr, "%s: Can't map %s: %s\n",
 627                         params.cmdname, params.imagefile, strerror(errno));
 628                 exit (EXIT_FAILURE);
 629         }
 630
 631         /* Setup the image header as per input image type*/
 632         if (tparams->set_header)
 633                 tparams->set_header (ptr, &sbuf, ifd, &params);
 634         else {
 635                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 636                         params.cmdname, tparams->name, strerror(errno));
 637                 exit (EXIT_FAILURE);
 638         }
 639
 640         /* Print the image information by processing image header */
 641         if (tparams->print_header)
 642                 tparams->print_header (ptr);
 643         else {
 644                 fprintf (stderr, "%s: Can't print header for %s\n",
 645                         params.cmdname, tparams->name);
 646         }
 647
 648         (void)munmap((void *)ptr, map_len);
 649
 650         /* We're a bit of paranoid */
 651 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 652    !defined(__sun__) && \
 653    !defined(__FreeBSD__) && \
 654    !defined(__OpenBSD__) && \
 655    !defined(__APPLE__)
 656         (void) fdatasync (ifd);
 657 #else
 658         (void) fsync (ifd);
 659 #endif
 660
 661         if (close(ifd)) {
 662                 fprintf (stderr, "%s: Write error on %s: %s\n",
 663                         params.cmdname, params.imagefile, strerror(errno));
 664                 exit (EXIT_FAILURE);
 665         }
 666
 667         exit (EXIT_SUCCESS);
 668 }
 669
 670 static void
 671 copy_file (int ifd, const char *datafile, int pad)
 672 {
 673         int dfd;
 674         struct stat sbuf;
 675         unsigned char *ptr;
 676         int tail;
 677         int zero = 0;
 678         uint8_t zeros[4096];
 679         int offset = 0;
 680         int size, ret;
 681         struct image_type_params *tparams = imagetool_get_type(params.type);
 682
 683         memset(zeros, 0, sizeof(zeros));
 684
 685         if (params.vflag) {
 686                 fprintf (stderr, "Adding Image %s\n", datafile);
 687         }
 688
 689         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 690                 fprintf (stderr, "%s: Can't open %s: %s\n",
 691                         params.cmdname, datafile, strerror(errno));
 692                 exit (EXIT_FAILURE);
 693         }
 694
 695         if (fstat(dfd, &sbuf) < 0) {
 696                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 697                         params.cmdname, datafile, strerror(errno));
 698                 exit (EXIT_FAILURE);
 699         }
 700
 701         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 702         if (ptr == MAP_FAILED) {
 703                 fprintf (stderr, "%s: Can't read %s: %s\n",
 704                         params.cmdname, datafile, strerror(errno));
 705                 exit (EXIT_FAILURE);
 706         }
 707
 708         if (params.xflag) {
 709                 unsigned char *p = NULL;
 710                 /*
 711                  * XIP: do not append the image_header_t at the
 712                  * beginning of the file, but consume the space
 713                  * reserved for it.
 714                  */
 715
 716                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 717                         fprintf (stderr,
 718                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 719                                 params.cmdname, datafile);
 720                         exit (EXIT_FAILURE);
 721                 }
 722
 723                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 724                         if ( *p != 0xff ) {
 725                                 fprintf (stderr,
 726                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 727                                         params.cmdname, datafile);
 728                                 exit (EXIT_FAILURE);
 729                         }
 730                 }
 731
 732                 offset = tparams->header_size;
 733         }
 734
 735         size = sbuf.st_size - offset;
 736
 737         ret = write(ifd, ptr + offset, size);
 738         if (ret != size) {
 739                 if (ret < 0)
 740                         fprintf (stderr, "%s: Write error on %s: %s\n",
 741                                  params.cmdname, params.imagefile, strerror(errno));
 742                 else if (ret < size)
 743                         fprintf (stderr, "%s: Write only %d/%d bytes, "\
 744                                  "probably no space left on the device\n",
 745                                  params.cmdname, ret, size);
 746                 exit (EXIT_FAILURE);
 747         }
 748
 749         tail = size % 4;
 750         if ((pad == 1) && (tail != 0)) {
 751
 752                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 753                         fprintf (stderr, "%s: Write error on %s: %s\n",
 754                                 params.cmdname, params.imagefile,
 755                                 strerror(errno));
 756                         exit (EXIT_FAILURE);
 757                 }
 758         } else if (pad > 1) {
 759                 while (pad > 0) {
 760                         int todo = sizeof(zeros);
 761
 762                         if (todo > pad)
 763                                 todo = pad;
 764                         if (write(ifd, (char *)&zeros, todo) != todo) {
 765                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 766                                         params.cmdname, params.imagefile,
 767                                         strerror(errno));
 768                                 exit(EXIT_FAILURE);
 769                         }
 770                         pad -= todo;
 771                 }
 772         }
 773
 774         (void) munmap((void *)ptr, sbuf.st_size);
 775         (void) close (dfd);
 776 }