uboot/tools/mkimage.c
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   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 "mkimage.h"
  11#include "imximage.h"
  12#include <image.h>
  13#include <version.h>
  14
  15static void copy_file(int, const char *, int);
  16
  17/* parameters initialized by core will be used by the image type code */
  18static 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
  28static enum ih_category cur_category;
  29
  30static int h_compare_category_name(const void *vtype1, const void *vtype2)
  31{
  32        const int *type1 = vtype1;
  33        const int *type2 = vtype2;
  34        const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
  35        const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
  36
  37        return strcmp(name1, name2);
  38}
  39
  40static int show_valid_options(enum ih_category category)
  41{
  42        int *order;
  43        int count;
  44        int item;
  45        int i;
  46
  47        count = genimg_get_cat_count(category);
  48        order = calloc(count, sizeof(*order));
  49        if (!order)
  50                return -ENOMEM;
  51
  52        /* Sort the names in order of short name for easier reading */
  53        for (item = 0; item < count; item++)
  54                order[item] = item;
  55        cur_category = category;
  56        qsort(order, count, sizeof(int), h_compare_category_name);
  57
  58        fprintf(stderr, "\nInvalid %s, supported are:\n",
  59                genimg_get_cat_desc(category));
  60        for (i = 0; i < count; i++) {
  61                item = order[i];
  62                fprintf(stderr, "\t%-15s  %s\n",
  63                        genimg_get_cat_short_name(category, item),
  64                        genimg_get_cat_name(category, item));
  65        }
  66        fprintf(stderr, "\n");
  67        free(order);
  68
  69        return 0;
  70}
  71
  72static void usage(const char *msg)
  73{
  74        fprintf(stderr, "Error: %s\n", msg);
  75        fprintf(stderr, "Usage: %s -l image\n"
  76                         "          -l ==> list image header information\n",
  77                params.cmdname);
  78        fprintf(stderr,
  79                "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
  80                "          -A ==> set architecture to 'arch'\n"
  81                "          -O ==> set operating system to 'os'\n"
  82                "          -T ==> set image type to 'type'\n"
  83                "          -C ==> set compression type 'comp'\n"
  84                "          -a ==> set load address to 'addr' (hex)\n"
  85                "          -e ==> set entry point to 'ep' (hex)\n"
  86                "          -n ==> set image name to 'name'\n"
  87                "          -d ==> use image data from 'datafile'\n"
  88                "          -x ==> set XIP (execute in place)\n",
  89                params.cmdname);
  90        fprintf(stderr,
  91                "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-i <ramdisk.cpio.gz>] fit-image\n"
  92                "           <dtb> file is used with -f auto, it may occur multiple times.\n",
  93                params.cmdname);
  94        fprintf(stderr,
  95                "          -D => set all options for device tree compiler\n"
  96                "          -f => input filename for FIT source\n"
  97                "          -i => input filename for ramdisk file\n");
  98#ifdef CONFIG_FIT_SIGNATURE
  99        fprintf(stderr,
 100                "Signing / verified boot options: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
 101                "          -E => place data outside of the FIT structure\n"
 102                "          -k => set directory containing private keys\n"
 103                "          -K => write public keys to this .dtb file\n"
 104                "          -c => add comment in signature node\n"
 105                "          -F => re-sign existing FIT image\n"
 106                "          -p => place external data at a static position\n"
 107                "          -r => mark keys used as 'required' in dtb\n"
 108                "          -N => engine to use for signing (pkcs11)\n");
 109#else
 110        fprintf(stderr,
 111                "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 112#endif
 113        fprintf(stderr, "       %s -V ==> print version information and exit\n",
 114                params.cmdname);
 115        fprintf(stderr, "Use '-T list' to see a list of available image types\n");
 116
 117        exit(EXIT_FAILURE);
 118}
 119
 120static int add_content(int type, const char *fname)
 121{
 122        struct content_info *cont;
 123
 124        cont = calloc(1, sizeof(*cont));
 125        if (!cont)
 126                return -1;
 127        cont->type = type;
 128        cont->fname = fname;
 129        if (params.content_tail)
 130                params.content_tail->next = cont;
 131        else
 132                params.content_head = cont;
 133        params.content_tail = cont;
 134
 135        return 0;
 136}
 137
 138static void process_args(int argc, char **argv)
 139{
 140        char *ptr;
 141        int type = IH_TYPE_INVALID;
 142        char *datafile = NULL;
 143        int opt;
 144
 145        while ((opt = getopt(argc, argv,
 146                             "a:A:b:c:C:d:D:e:Ef:Fk:i:K:ln:N:p:O:rR:qsT:vVx")) != -1) {
 147                switch (opt) {
 148                case 'a':
 149                        params.addr = strtoull(optarg, &ptr, 16);
 150                        if (*ptr) {
 151                                fprintf(stderr, "%s: invalid load address %s\n",
 152                                        params.cmdname, optarg);
 153                                exit(EXIT_FAILURE);
 154                        }
 155                        break;
 156                case 'A':
 157                        params.arch = genimg_get_arch_id(optarg);
 158                        if (params.arch < 0) {
 159                                show_valid_options(IH_ARCH);
 160                                usage("Invalid architecture");
 161                        }
 162                        break;
 163                case 'b':
 164                        if (add_content(IH_TYPE_FLATDT, optarg)) {
 165                                fprintf(stderr,
 166                                        "%s: Out of memory adding content '%s'",
 167                                        params.cmdname, optarg);
 168                                exit(EXIT_FAILURE);
 169                        }
 170                        break;
 171                case 'c':
 172                        params.comment = optarg;
 173                        break;
 174                case 'C':
 175                        params.comp = genimg_get_comp_id(optarg);
 176                        if (params.comp < 0) {
 177                                show_valid_options(IH_COMP);
 178                                usage("Invalid compression type");
 179                        }
 180                        break;
 181                case 'd':
 182                        params.datafile = optarg;
 183                        params.dflag = 1;
 184                        break;
 185                case 'D':
 186                        params.dtc = optarg;
 187                        break;
 188                case 'e':
 189                        params.ep = strtoull(optarg, &ptr, 16);
 190                        if (*ptr) {
 191                                fprintf(stderr, "%s: invalid entry point %s\n",
 192                                        params.cmdname, optarg);
 193                                exit(EXIT_FAILURE);
 194                        }
 195                        params.eflag = 1;
 196                        break;
 197                case 'E':
 198                        params.external_data = true;
 199                        break;
 200                case 'f':
 201                        datafile = optarg;
 202                        params.auto_its = !strcmp(datafile, "auto");
 203                        /* no break */
 204                case 'F':
 205                        /*
 206                         * The flattened image tree (FIT) format
 207                         * requires a flattened device tree image type
 208                         */
 209                        params.type = IH_TYPE_FLATDT;
 210                        params.fflag = 1;
 211                        break;
 212                case 'i':
 213                        params.fit_ramdisk = optarg;
 214                        break;
 215                case 'k':
 216                        params.keydir = optarg;
 217                        break;
 218                case 'K':
 219                        params.keydest = optarg;
 220                        break;
 221                case 'l':
 222                        params.lflag = 1;
 223                        break;
 224                case 'n':
 225                        params.imagename = optarg;
 226                        break;
 227                case 'N':
 228                        params.engine_id = optarg;
 229                        break;
 230                case 'O':
 231                        params.os = genimg_get_os_id(optarg);
 232                        if (params.os < 0) {
 233                                show_valid_options(IH_OS);
 234                                usage("Invalid operating system");
 235                        }
 236                        break;
 237                case 'p':
 238                        params.external_offset = strtoull(optarg, &ptr, 16);
 239                        if (*ptr) {
 240                                fprintf(stderr, "%s: invalid offset size %s\n",
 241                                        params.cmdname, optarg);
 242                                exit(EXIT_FAILURE);
 243                        }
 244                        break;
 245                case 'q':
 246                        params.quiet = 1;
 247                        break;
 248                case 'r':
 249                        params.require_keys = 1;
 250                        break;
 251                case 'R':
 252                        /*
 253                         * This entry is for the second configuration
 254                         * file, if only one is not enough.
 255                         */
 256                        params.imagename2 = optarg;
 257                        break;
 258                case 's':
 259                        params.skipcpy = 1;
 260                        break;
 261                case 'T':
 262                        if (strcmp(optarg, "list") == 0) {
 263                                show_valid_options(IH_TYPE);
 264                                exit(EXIT_SUCCESS);
 265                        }
 266                        type = genimg_get_type_id(optarg);
 267                        if (type < 0) {
 268                                show_valid_options(IH_TYPE);
 269                                usage("Invalid image type");
 270                        }
 271                        break;
 272                case 'v':
 273                        params.vflag++;
 274                        break;
 275                case 'V':
 276                        printf("mkimage version %s\n", PLAIN_VERSION);
 277                        exit(EXIT_SUCCESS);
 278                case 'x':
 279                        params.xflag++;
 280                        break;
 281                default:
 282                        usage("Invalid option");
 283                }
 284        }
 285
 286        /* The last parameter is expected to be the imagefile */
 287        if (optind < argc)
 288                params.imagefile = argv[optind];
 289
 290        /*
 291         * For auto-generated FIT images we need to know the image type to put
 292         * in the FIT, which is separate from the file's image type (which
 293         * will always be IH_TYPE_FLATDT in this case).
 294         */
 295        if (params.type == IH_TYPE_FLATDT) {
 296                params.fit_image_type = type ? type : IH_TYPE_KERNEL;
 297                /* For auto_its, datafile is always 'auto' */
 298                if (!params.auto_its)
 299                        params.datafile = datafile;
 300                else if (!params.datafile)
 301                        usage("Missing data file for auto-FIT (use -d)");
 302        } else if (type != IH_TYPE_INVALID) {
 303                if (type == IH_TYPE_SCRIPT && !params.datafile)
 304                        usage("Missing data file for script (use -d)");
 305                params.type = type;
 306        }
 307
 308        if (!params.imagefile)
 309                usage("Missing output filename");
 310}
 311
 312int main(int argc, char **argv)
 313{
 314        int ifd = -1;
 315        struct stat sbuf;
 316        char *ptr;
 317        int retval = 0;
 318        struct image_type_params *tparams = NULL;
 319        int pad_len = 0;
 320        int dfd;
 321        size_t map_len;
 322
 323        params.cmdname = *argv;
 324        params.addr = 0;
 325        params.ep = 0;
 326
 327        process_args(argc, argv);
 328
 329        /* set tparams as per input type_id */
 330        tparams = imagetool_get_type(params.type);
 331        if (tparams == NULL) {
 332                fprintf (stderr, "%s: unsupported type %s\n",
 333                        params.cmdname, genimg_get_type_name(params.type));
 334                exit (EXIT_FAILURE);
 335        }
 336
 337        /*
 338         * check the passed arguments parameters meets the requirements
 339         * as per image type to be generated/listed
 340         */
 341        if (tparams->check_params)
 342                if (tparams->check_params (&params))
 343                        usage("Bad parameters for image type");
 344
 345        if (!params.eflag) {
 346                params.ep = params.addr;
 347                /* If XIP, entry point must be after the U-Boot header */
 348                if (params.xflag)
 349                        params.ep += tparams->header_size;
 350        }
 351
 352        if (params.fflag){
 353                if (tparams->fflag_handle)
 354                        /*
 355                         * in some cases, some additional processing needs
 356                         * to be done if fflag is defined
 357                         *
 358                         * For ex. fit_handle_file for Fit file support
 359                         */
 360                        retval = tparams->fflag_handle(&params);
 361
 362                if (retval != EXIT_SUCCESS)
 363                        exit (retval);
 364        }
 365
 366        if (params.lflag || params.fflag) {
 367                ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 368        } else {
 369                ifd = open (params.imagefile,
 370                        O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 371        }
 372
 373        if (ifd < 0) {
 374                fprintf (stderr, "%s: Can't open %s: %s\n",
 375                        params.cmdname, params.imagefile,
 376                        strerror(errno));
 377                exit (EXIT_FAILURE);
 378        }
 379
 380        if (params.lflag || params.fflag) {
 381                /*
 382                 * list header information of existing image
 383                 */
 384                if (fstat(ifd, &sbuf) < 0) {
 385                        fprintf (stderr, "%s: Can't stat %s: %s\n",
 386                                params.cmdname, params.imagefile,
 387                                strerror(errno));
 388                        exit (EXIT_FAILURE);
 389                }
 390
 391                if ((unsigned)sbuf.st_size < tparams->header_size) {
 392                        fprintf (stderr,
 393                                "%s: Bad size: \"%s\" is not valid image\n",
 394                                params.cmdname, params.imagefile);
 395                        exit (EXIT_FAILURE);
 396                }
 397
 398                ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 399                if (ptr == MAP_FAILED) {
 400                        fprintf (stderr, "%s: Can't read %s: %s\n",
 401                                params.cmdname, params.imagefile,
 402                                strerror(errno));
 403                        exit (EXIT_FAILURE);
 404                }
 405
 406                /*
 407                 * scan through mkimage registry for all supported image types
 408                 * and verify the input image file header for match
 409                 * Print the image information for matched image type
 410                 * Returns the error code if not matched
 411                 */
 412                retval = imagetool_verify_print_header(ptr, &sbuf,
 413                                tparams, &params);
 414
 415                (void) munmap((void *)ptr, sbuf.st_size);
 416                (void) close (ifd);
 417
 418                exit (retval);
 419        }
 420
 421        if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 422                dfd = open(params.datafile, O_RDONLY | O_BINARY);
 423                if (dfd < 0) {
 424                        fprintf(stderr, "%s: Can't open %s: %s\n",
 425                                params.cmdname, params.datafile,
 426                                strerror(errno));
 427                        exit(EXIT_FAILURE);
 428                }
 429
 430                if (fstat(dfd, &sbuf) < 0) {
 431                        fprintf(stderr, "%s: Can't stat %s: %s\n",
 432                                params.cmdname, params.datafile,
 433                                strerror(errno));
 434                        exit(EXIT_FAILURE);
 435                }
 436
 437                params.file_size = sbuf.st_size + tparams->header_size;
 438                close(dfd);
 439        }
 440
 441        /*
 442         * In case there an header with a variable
 443         * length will be added, the corresponding
 444         * function is called. This is responsible to
 445         * allocate memory for the header itself.
 446         */
 447        if (tparams->vrec_header)
 448                pad_len = tparams->vrec_header(&params, tparams);
 449        else
 450                memset(tparams->hdr, 0, tparams->header_size);
 451
 452        if (write(ifd, tparams->hdr, tparams->header_size)
 453                                        != tparams->header_size) {
 454                fprintf (stderr, "%s: Write error on %s: %s\n",
 455                        params.cmdname, params.imagefile, strerror(errno));
 456                exit (EXIT_FAILURE);
 457        }
 458
 459        if (!params.skipcpy) {
 460                if (params.type == IH_TYPE_MULTI ||
 461                    params.type == IH_TYPE_SCRIPT) {
 462                        char *file = params.datafile;
 463                        uint32_t size;
 464
 465                        for (;;) {
 466                                char *sep = NULL;
 467
 468                                if (file) {
 469                                        if ((sep = strchr(file, ':')) != NULL) {
 470                                                *sep = '\0';
 471                                        }
 472
 473                                        if (stat (file, &sbuf) < 0) {
 474                                                fprintf (stderr, "%s: Can't stat %s: %s\n",
 475                                                         params.cmdname, file, strerror(errno));
 476                                                exit (EXIT_FAILURE);
 477                                        }
 478                                        size = cpu_to_uimage (sbuf.st_size);
 479                                } else {
 480                                        size = 0;
 481                                }
 482
 483                                if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 484                                        fprintf (stderr, "%s: Write error on %s: %s\n",
 485                                                 params.cmdname, params.imagefile,
 486                                                 strerror(errno));
 487                                        exit (EXIT_FAILURE);
 488                                }
 489
 490                                if (!file) {
 491                                        break;
 492                                }
 493
 494                                if (sep) {
 495                                        *sep = ':';
 496                                        file = sep + 1;
 497                                } else {
 498                                        file = NULL;
 499                                }
 500                        }
 501
 502                        file = params.datafile;
 503
 504                        for (;;) {
 505                                char *sep = strchr(file, ':');
 506                                if (sep) {
 507                                        *sep = '\0';
 508                                        copy_file (ifd, file, 1);
 509                                        *sep++ = ':';
 510                                        file = sep;
 511                                } else {
 512                                        copy_file (ifd, file, 0);
 513                                        break;
 514                                }
 515                        }
 516                } else if (params.type == IH_TYPE_PBLIMAGE) {
 517                        /* PBL has special Image format, implements its' own */
 518                        pbl_load_uboot(ifd, &params);
 519                } else if (params.type == IH_TYPE_ZYNQMPBIF) {
 520                        /* Image file is meta, walk through actual targets */
 521                        int ret;
 522
 523                        ret = zynqmpbif_copy_image(ifd, &params);
 524                        if (ret)
 525                                return ret;
 526                } else if (params.type == IH_TYPE_IMX8IMAGE) {
 527                        /* i.MX8/8X has special Image format */
 528                        int ret;
 529
 530                        ret = imx8image_copy_image(ifd, &params);
 531                        if (ret)
 532                                return ret;
 533                } else {
 534                        copy_file(ifd, params.datafile, pad_len);
 535                }
 536                if (params.type == IH_TYPE_FIRMWARE_IVT) {
 537                        /* Add alignment and IVT */
 538                        uint32_t aligned_filesize = (params.file_size + 0x1000
 539                                        - 1) & ~(0x1000 - 1);
 540                        flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
 541                                        params.addr, 0, 0, 0, params.addr
 542                                                        + aligned_filesize
 543                                                        - tparams->header_size,
 544                                        params.addr + aligned_filesize
 545                                                        - tparams->header_size
 546                                                        + 0x20, 0 };
 547                        int i = params.file_size;
 548                        for (; i < aligned_filesize; i++) {
 549                                if (write(ifd, (char *) &i, 1) != 1) {
 550                                        fprintf(stderr,
 551                                                        "%s: Write error on %s: %s\n",
 552                                                        params.cmdname,
 553                                                        params.imagefile,
 554                                                        strerror(errno));
 555                                        exit(EXIT_FAILURE);
 556                                }
 557                        }
 558                        if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
 559                                        != sizeof(flash_header_v2_t)) {
 560                                fprintf(stderr, "%s: Write error on %s: %s\n",
 561                                                params.cmdname,
 562                                                params.imagefile,
 563                                                strerror(errno));
 564                                exit(EXIT_FAILURE);
 565                        }
 566                }
 567        }
 568
 569        /* We're a bit of paranoid */
 570#if defined(_POSIX_SYNCHRONIZED_IO) && \
 571   !defined(__sun__) && \
 572   !defined(__FreeBSD__) && \
 573   !defined(__OpenBSD__) && \
 574   !defined(__APPLE__)
 575        (void) fdatasync (ifd);
 576#else
 577        (void) fsync (ifd);
 578#endif
 579
 580        if (fstat(ifd, &sbuf) < 0) {
 581                fprintf (stderr, "%s: Can't stat %s: %s\n",
 582                        params.cmdname, params.imagefile, strerror(errno));
 583                exit (EXIT_FAILURE);
 584        }
 585        params.file_size = sbuf.st_size;
 586
 587        map_len = sbuf.st_size;
 588        ptr = mmap(0, map_len, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
 589        if (ptr == MAP_FAILED) {
 590                fprintf (stderr, "%s: Can't map %s: %s\n",
 591                        params.cmdname, params.imagefile, strerror(errno));
 592                exit (EXIT_FAILURE);
 593        }
 594
 595        /* Setup the image header as per input image type*/
 596        if (tparams->set_header)
 597                tparams->set_header (ptr, &sbuf, ifd, &params);
 598        else {
 599                fprintf (stderr, "%s: Can't set header for %s: %s\n",
 600                        params.cmdname, tparams->name, strerror(errno));
 601                exit (EXIT_FAILURE);
 602        }
 603
 604        /* Print the image information by processing image header */
 605        if (tparams->print_header)
 606                tparams->print_header (ptr);
 607        else {
 608                fprintf (stderr, "%s: Can't print header for %s\n",
 609                        params.cmdname, tparams->name);
 610        }
 611
 612        (void)munmap((void *)ptr, map_len);
 613
 614        /* We're a bit of paranoid */
 615#if defined(_POSIX_SYNCHRONIZED_IO) && \
 616   !defined(__sun__) && \
 617   !defined(__FreeBSD__) && \
 618   !defined(__OpenBSD__) && \
 619   !defined(__APPLE__)
 620        (void) fdatasync (ifd);
 621#else
 622        (void) fsync (ifd);
 623#endif
 624
 625        if (close(ifd)) {
 626                fprintf (stderr, "%s: Write error on %s: %s\n",
 627                        params.cmdname, params.imagefile, strerror(errno));
 628                exit (EXIT_FAILURE);
 629        }
 630
 631        exit (EXIT_SUCCESS);
 632}
 633
 634static void
 635copy_file (int ifd, const char *datafile, int pad)
 636{
 637        int dfd;
 638        struct stat sbuf;
 639        unsigned char *ptr;
 640        int tail;
 641        int zero = 0;
 642        uint8_t zeros[4096];
 643        int offset = 0;
 644        int size;
 645        struct image_type_params *tparams = imagetool_get_type(params.type);
 646
 647        memset(zeros, 0, sizeof(zeros));
 648
 649        if (params.vflag) {
 650                fprintf (stderr, "Adding Image %s\n", datafile);
 651        }
 652
 653        if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 654                fprintf (stderr, "%s: Can't open %s: %s\n",
 655                        params.cmdname, datafile, strerror(errno));
 656                exit (EXIT_FAILURE);
 657        }
 658
 659        if (fstat(dfd, &sbuf) < 0) {
 660                fprintf (stderr, "%s: Can't stat %s: %s\n",
 661                        params.cmdname, datafile, strerror(errno));
 662                exit (EXIT_FAILURE);
 663        }
 664
 665        ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 666        if (ptr == MAP_FAILED) {
 667                fprintf (stderr, "%s: Can't read %s: %s\n",
 668                        params.cmdname, datafile, strerror(errno));
 669                exit (EXIT_FAILURE);
 670        }
 671
 672        if (params.xflag) {
 673                unsigned char *p = NULL;
 674                /*
 675                 * XIP: do not append the image_header_t at the
 676                 * beginning of the file, but consume the space
 677                 * reserved for it.
 678                 */
 679
 680                if ((unsigned)sbuf.st_size < tparams->header_size) {
 681                        fprintf (stderr,
 682                                "%s: Bad size: \"%s\" is too small for XIP\n",
 683                                params.cmdname, datafile);
 684                        exit (EXIT_FAILURE);
 685                }
 686
 687                for (p = ptr; p < ptr + tparams->header_size; p++) {
 688                        if ( *p != 0xff ) {
 689                                fprintf (stderr,
 690                                        "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 691                                        params.cmdname, datafile);
 692                                exit (EXIT_FAILURE);
 693                        }
 694                }
 695
 696                offset = tparams->header_size;
 697        }
 698
 699        size = sbuf.st_size - offset;
 700        if (write(ifd, ptr + offset, size) != size) {
 701                fprintf (stderr, "%s: Write error on %s: %s\n",
 702                        params.cmdname, params.imagefile, strerror(errno));
 703                exit (EXIT_FAILURE);
 704        }
 705
 706        tail = size % 4;
 707        if ((pad == 1) && (tail != 0)) {
 708
 709                if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 710                        fprintf (stderr, "%s: Write error on %s: %s\n",
 711                                params.cmdname, params.imagefile,
 712                                strerror(errno));
 713                        exit (EXIT_FAILURE);
 714                }
 715        } else if (pad > 1) {
 716                while (pad > 0) {
 717                        int todo = sizeof(zeros);
 718
 719                        if (todo > pad)
 720                                todo = pad;
 721                        if (write(ifd, (char *)&zeros, todo) != todo) {
 722                                fprintf(stderr, "%s: Write error on %s: %s\n",
 723                                        params.cmdname, params.imagefile,
 724                                        strerror(errno));
 725                                exit(EXIT_FAILURE);
 726                        }
 727                        pad -= todo;
 728                }
 729        }
 730
 731        (void) munmap((void *)ptr, sbuf.st_size);
 732        (void) close (dfd);
 733}
 734