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 (i = 0, item = 0; i < count; i++, item++) {
  55                 while (!genimg_cat_has_id(category, item) && i < count) {
  56                         item++;
  57                         count--;
  58                 }
  59                 order[i] = item;
  60         }
  61         cur_category = category;
  62         qsort(order, count, sizeof(int), h_compare_category_name);
  63
  64         fprintf(stderr, "\nInvalid %s, supported are:\n",
  65                 genimg_get_cat_desc(category));
  66         for (i = 0; i < count; i++) {
  67                 item = order[i];
  68                 fprintf(stderr, "\t%-15s  %s\n",
  69                         genimg_get_cat_short_name(category, item),
  70                         genimg_get_cat_name(category, item));
  71         }
  72         fprintf(stderr, "\n");
  73         free(order);
  74
  75         return 0;
  76 }
  77
  78 static void usage(const char *msg)
  79 {
  80         fprintf(stderr, "Error: %s\n", msg);
  81         fprintf(stderr, "Usage: %s -l image\n"
  82                          "          -l ==> list image header information\n",
  83                 params.cmdname);
  84         fprintf(stderr,
  85                 "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
  86                 "          -A ==> set architecture to 'arch'\n"
  87                 "          -O ==> set operating system to 'os'\n"
  88                 "          -T ==> set image type to 'type'\n"
  89                 "          -C ==> set compression type 'comp'\n"
  90                 "          -a ==> set load address to 'addr' (hex)\n"
  91                 "          -e ==> set entry point to 'ep' (hex)\n"
  92                 "          -n ==> set image name to 'name'\n"
  93                 "          -d ==> use image data from 'datafile'\n"
  94                 "          -x ==> set XIP (execute in place)\n",
  95                 params.cmdname);
  96         fprintf(stderr,
  97                 "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-E] [-B size] [-i <ramdisk.cpio.gz>] fit-image\n"
  98                 "           <dtb> file is used with -f auto, it may occur multiple times.\n",
  99                 params.cmdname);
 100         fprintf(stderr,
 101                 "          -D => set all options for device tree compiler\n"
 102                 "          -f => input filename for FIT source\n"
 103                 "          -i => input filename for ramdisk file\n"
 104                 "          -E => place data outside of the FIT structure\n"
 105                 "          -B => align size in hex for FIT structure and header\n");
 106 #ifdef CONFIG_FIT_SIGNATURE
 107         fprintf(stderr,
 108                 "Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
 109                 "          -k => set directory containing private keys\n"
 110                 "          -K => write public keys to this .dtb file\n"
 111                 "          -c => add comment in signature node\n"
 112                 "          -F => re-sign existing FIT image\n"
 113                 "          -p => place external data at a static position\n"
 114                 "          -r => mark keys used as 'required' in dtb\n"
 115                 "          -N => openssl engine to use for signing\n");
 116 #else
 117         fprintf(stderr,
 118                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
 119 #endif
 120         fprintf(stderr, "       %s -V ==> print version information and exit\n",
 121                 params.cmdname);
 122         fprintf(stderr, "Use '-T list' to see a list of available image types\n");
 123
 124         exit(EXIT_FAILURE);
 125 }
 126
 127 static int add_content(int type, const char *fname)
 128 {
 129         struct content_info *cont;
 130
 131         cont = calloc(1, sizeof(*cont));
 132         if (!cont)
 133                 return -1;
 134         cont->type = type;
 135         cont->fname = fname;
 136         if (params.content_tail)
 137                 params.content_tail->next = cont;
 138         else
 139                 params.content_head = cont;
 140         params.content_tail = cont;
 141
 142         return 0;
 143 }
 144
 145 #define OPT_STRING "a:A:b:B:c:C:d:D:e:Ef:Fk:i:K:ln:N:p:O:rR:qstT:vVx"
 146 static void process_args(int argc, char **argv)
 147 {
 148         char *ptr;
 149         int type = IH_TYPE_INVALID;
 150         char *datafile = NULL;
 151         int opt;
 152
 153         while ((opt = getopt(argc, argv,
 154                    "a:A:b:B:c:C:d:D:e:Ef:Fk:i:K:ln:N:p:O:rR:qstT:vVx")) != -1) {
 155                 switch (opt) {
 156                 case 'a':
 157                         params.addr = strtoull(optarg, &ptr, 16);
 158                         if (*ptr) {
 159                                 fprintf(stderr, "%s: invalid load address %s\n",
 160                                         params.cmdname, optarg);
 161                                 exit(EXIT_FAILURE);
 162                         }
 163                         break;
 164                 case 'A':
 165                         params.arch = genimg_get_arch_id(optarg);
 166                         if (params.arch < 0) {
 167                                 show_valid_options(IH_ARCH);
 168                                 usage("Invalid architecture");
 169                         }
 170                         break;
 171                 case 'b':
 172                         if (add_content(IH_TYPE_FLATDT, optarg)) {
 173                                 fprintf(stderr,
 174                                         "%s: Out of memory adding content '%s'",
 175                                         params.cmdname, optarg);
 176                                 exit(EXIT_FAILURE);
 177                         }
 178                         break;
 179                 case 'B':
 180                         params.bl_len = strtoull(optarg, &ptr, 16);
 181                         if (*ptr) {
 182                                 fprintf(stderr, "%s: invalid block length %s\n",
 183                                         params.cmdname, optarg);
 184                                 exit(EXIT_FAILURE);
 185                         }
 186
 187                         break;
 188                 case 'c':
 189                         params.comment = optarg;
 190                         break;
 191                 case 'C':
 192                         params.comp = genimg_get_comp_id(optarg);
 193                         if (params.comp < 0) {
 194                                 show_valid_options(IH_COMP);
 195                                 usage("Invalid compression type");
 196                         }
 197                         break;
 198                 case 'd':
 199                         params.datafile = optarg;
 200                         params.dflag = 1;
 201                         break;
 202                 case 'D':
 203                         params.dtc = optarg;
 204                         break;
 205                 case 'e':
 206                         params.ep = strtoull(optarg, &ptr, 16);
 207                         if (*ptr) {
 208                                 fprintf(stderr, "%s: invalid entry point %s\n",
 209                                         params.cmdname, optarg);
 210                                 exit(EXIT_FAILURE);
 211                         }
 212                         params.eflag = 1;
 213                         break;
 214                 case 'E':
 215                         params.external_data = true;
 216                         break;
 217                 case 'f':
 218                         datafile = optarg;
 219                         params.auto_its = !strcmp(datafile, "auto");
 220                         /* fallthrough */
 221                 case 'F':
 222                         /*
 223                          * The flattened image tree (FIT) format
 224                          * requires a flattened device tree image type
 225                          */
 226                         params.type = IH_TYPE_FLATDT;
 227                         params.fflag = 1;
 228                         break;
 229                 case 'i':
 230                         params.fit_ramdisk = optarg;
 231                         break;
 232                 case 'k':
 233                         params.keydir = optarg;
 234                         break;
 235                 case 'K':
 236                         params.keydest = optarg;
 237                         break;
 238                 case 'l':
 239                         params.lflag = 1;
 240                         break;
 241                 case 'n':
 242                         params.imagename = optarg;
 243                         break;
 244                 case 'N':
 245                         params.engine_id = optarg;
 246                         break;
 247                 case 'O':
 248                         params.os = genimg_get_os_id(optarg);
 249                         if (params.os < 0) {
 250                                 show_valid_options(IH_OS);
 251                                 usage("Invalid operating system");
 252                         }
 253                         break;
 254                 case 'p':
 255                         params.external_offset = strtoull(optarg, &ptr, 16);
 256                         if (*ptr) {
 257                                 fprintf(stderr, "%s: invalid offset size %s\n",
 258                                         params.cmdname, optarg);
 259                                 exit(EXIT_FAILURE);
 260                         }
 261                         break;
 262                 case 'q':
 263                         params.quiet = 1;
 264                         break;
 265                 case 'r':
 266                         params.require_keys = 1;
 267                         break;
 268                 case 'R':
 269                         /*
 270                          * This entry is for the second configuration
 271                          * file, if only one is not enough.
 272                          */
 273                         params.imagename2 = optarg;
 274                         break;
 275                 case 's':
 276                         params.skipcpy = 1;
 277                         break;
 278                 case 't':
 279                         params.reset_timestamp = 1;
 280                         break;
 281                 case 'T':
 282                         if (strcmp(optarg, "list") == 0) {
 283                                 show_valid_options(IH_TYPE);
 284                                 exit(EXIT_SUCCESS);
 285                         }
 286                         type = genimg_get_type_id(optarg);
 287                         if (type < 0) {
 288                                 show_valid_options(IH_TYPE);
 289                                 usage("Invalid image type");
 290                         }
 291                         break;
 292                 case 'v':
 293                         params.vflag++;
 294                         break;
 295                 case 'V':
 296                         printf("mkimage version %s\n", PLAIN_VERSION);
 297                         exit(EXIT_SUCCESS);
 298                 case 'x':
 299                         params.xflag++;
 300                         break;
 301                 default:
 302                         usage("Invalid option");
 303                 }
 304         }
 305
 306         /* The last parameter is expected to be the imagefile */
 307         if (optind < argc)
 308                 params.imagefile = argv[optind];
 309
 310         /*
 311          * For auto-generated FIT images we need to know the image type to put
 312          * in the FIT, which is separate from the file's image type (which
 313          * will always be IH_TYPE_FLATDT in this case).
 314          */
 315         if (params.type == IH_TYPE_FLATDT) {
 316                 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
 317                 /* For auto_its, datafile is always 'auto' */
 318                 if (!params.auto_its)
 319                         params.datafile = datafile;
 320                 else if (!params.datafile)
 321                         usage("Missing data file for auto-FIT (use -d)");
 322         } else if (type != IH_TYPE_INVALID) {
 323                 if (type == IH_TYPE_SCRIPT && !params.datafile)
 324                         usage("Missing data file for script (use -d)");
 325                 params.type = type;
 326         }
 327
 328         if (!params.imagefile)
 329                 usage("Missing output filename");
 330 }
 331
 332 int main(int argc, char **argv)
 333 {
 334         int ifd = -1;
 335         struct stat sbuf;
 336         char *ptr;
 337         int retval = 0;
 338         struct image_type_params *tparams = NULL;
 339         int pad_len = 0;
 340         int dfd;
 341         size_t map_len;
 342
 343         params.cmdname = *argv;
 344         params.addr = 0;
 345         params.ep = 0;
 346
 347         process_args(argc, argv);
 348
 349         /* set tparams as per input type_id */
 350         tparams = imagetool_get_type(params.type);
 351         if (tparams == NULL) {
 352                 fprintf (stderr, "%s: unsupported type %s\n",
 353                         params.cmdname, genimg_get_type_name(params.type));
 354                 exit (EXIT_FAILURE);
 355         }
 356
 357         /*
 358          * check the passed arguments parameters meets the requirements
 359          * as per image type to be generated/listed
 360          */
 361         if (tparams->check_params)
 362                 if (tparams->check_params (&params))
 363                         usage("Bad parameters for image type");
 364
 365         if (!params.eflag) {
 366                 params.ep = params.addr;
 367                 /* If XIP, entry point must be after the U-Boot header */
 368                 if (params.xflag)
 369                         params.ep += tparams->header_size;
 370         }
 371
 372         if (params.fflag){
 373                 if (tparams->fflag_handle)
 374                         /*
 375                          * in some cases, some additional processing needs
 376                          * to be done if fflag is defined
 377                          *
 378                          * For ex. fit_handle_file for Fit file support
 379                          */
 380                         retval = tparams->fflag_handle(&params);
 381
 382                 if (retval != EXIT_SUCCESS)
 383                         exit (retval);
 384         }
 385
 386         if (params.lflag || params.fflag) {
 387                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
 388         } else {
 389                 ifd = open (params.imagefile,
 390                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 391         }
 392
 393         if (ifd < 0) {
 394                 fprintf (stderr, "%s: Can't open %s: %s\n",
 395                         params.cmdname, params.imagefile,
 396                         strerror(errno));
 397                 exit (EXIT_FAILURE);
 398         }
 399
 400         if (params.lflag || params.fflag) {
 401                 /*
 402                  * list header information of existing image
 403                  */
 404                 if (fstat(ifd, &sbuf) < 0) {
 405                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 406                                 params.cmdname, params.imagefile,
 407                                 strerror(errno));
 408                         exit (EXIT_FAILURE);
 409                 }
 410
 411                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 412                         fprintf (stderr,
 413                                 "%s: Bad size: \"%s\" is not valid image\n",
 414                                 params.cmdname, params.imagefile);
 415                         exit (EXIT_FAILURE);
 416                 }
 417
 418                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
 419                 if (ptr == MAP_FAILED) {
 420                         fprintf (stderr, "%s: Can't read %s: %s\n",
 421                                 params.cmdname, params.imagefile,
 422                                 strerror(errno));
 423                         exit (EXIT_FAILURE);
 424                 }
 425
 426                 if (params.fflag) {
 427                         /*
 428                          * Verifies the header format based on the expected header for image
 429                          * type in tparams
 430                          */
 431                         retval = imagetool_verify_print_header_by_type(ptr, &sbuf,
 432                                         tparams, &params);
 433                 } else {
 434                         /**
 435                          * When listing the image, we are not given the image type. Simply check all
 436                          * image types to find one that matches our header
 437                          */
 438                         retval = imagetool_verify_print_header(ptr, &sbuf,
 439                                         tparams, &params);
 440                 }
 441
 442                 (void) munmap((void *)ptr, sbuf.st_size);
 443                 (void) close (ifd);
 444
 445                 exit (retval);
 446         }
 447
 448         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
 449                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
 450                 if (dfd < 0) {
 451                         fprintf(stderr, "%s: Can't open %s: %s\n",
 452                                 params.cmdname, params.datafile,
 453                                 strerror(errno));
 454                         exit(EXIT_FAILURE);
 455                 }
 456
 457                 if (fstat(dfd, &sbuf) < 0) {
 458                         fprintf(stderr, "%s: Can't stat %s: %s\n",
 459                                 params.cmdname, params.datafile,
 460                                 strerror(errno));
 461                         exit(EXIT_FAILURE);
 462                 }
 463
 464                 params.file_size = sbuf.st_size + tparams->header_size;
 465                 close(dfd);
 466         }
 467
 468         /*
 469          * In case there an header with a variable
 470          * length will be added, the corresponding
 471          * function is called. This is responsible to
 472          * allocate memory for the header itself.
 473          */
 474         if (tparams->vrec_header)
 475                 pad_len = tparams->vrec_header(&params, tparams);
 476         else
 477                 memset(tparams->hdr, 0, tparams->header_size);
 478
 479         if (write(ifd, tparams->hdr, tparams->header_size)
 480                                         != tparams->header_size) {
 481                 fprintf (stderr, "%s: Write error on %s: %s\n",
 482                         params.cmdname, params.imagefile, strerror(errno));
 483                 exit (EXIT_FAILURE);
 484         }
 485
 486         if (!params.skipcpy) {
 487                 if (params.type == IH_TYPE_MULTI ||
 488                     params.type == IH_TYPE_SCRIPT) {
 489                         char *file = params.datafile;
 490                         uint32_t size;
 491
 492                         for (;;) {
 493                                 char *sep = NULL;
 494
 495                                 if (file) {
 496                                         if ((sep = strchr(file, ':')) != NULL) {
 497                                                 *sep = '\0';
 498                                         }
 499
 500                                         if (stat (file, &sbuf) < 0) {
 501                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 502                                                          params.cmdname, file, strerror(errno));
 503                                                 exit (EXIT_FAILURE);
 504                                         }
 505                                         size = cpu_to_uimage (sbuf.st_size);
 506                                 } else {
 507                                         size = 0;
 508                                 }
 509
 510                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 511                                         fprintf (stderr, "%s: Write error on %s: %s\n",
 512                                                  params.cmdname, params.imagefile,
 513                                                  strerror(errno));
 514                                         exit (EXIT_FAILURE);
 515                                 }
 516
 517                                 if (!file) {
 518                                         break;
 519                                 }
 520
 521                                 if (sep) {
 522                                         *sep = ':';
 523                                         file = sep + 1;
 524                                 } else {
 525                                         file = NULL;
 526                                 }
 527                         }
 528
 529                         file = params.datafile;
 530
 531                         for (;;) {
 532                                 char *sep = strchr(file, ':');
 533                                 if (sep) {
 534                                         *sep = '\0';
 535                                         copy_file (ifd, file, 1);
 536                                         *sep++ = ':';
 537                                         file = sep;
 538                                 } else {
 539                                         copy_file (ifd, file, 0);
 540                                         break;
 541                                 }
 542                         }
 543                 } else if (params.type == IH_TYPE_PBLIMAGE) {
 544                         /* PBL has special Image format, implements its' own */
 545                         pbl_load_uboot(ifd, &params);
 546                 } else if (params.type == IH_TYPE_ZYNQMPBIF) {
 547                         /* Image file is meta, walk through actual targets */
 548                         int ret;
 549
 550                         ret = zynqmpbif_copy_image(ifd, &params);
 551                         if (ret)
 552                                 return ret;
 553                 } else if (params.type == IH_TYPE_IMX8IMAGE) {
 554                         /* i.MX8/8X has special Image format */
 555                         int ret;
 556
 557                         ret = imx8image_copy_image(ifd, &params);
 558                         if (ret)
 559                                 return ret;
 560                 } else if (params.type == IH_TYPE_IMX8MIMAGE) {
 561                         /* i.MX8M has special Image format */
 562                         int ret;
 563
 564                         ret = imx8mimage_copy_image(ifd, &params);
 565                         if (ret)
 566                                 return ret;
 567                 } else if ((params.type == IH_TYPE_RKSD) ||
 568                                 (params.type == IH_TYPE_RKSPI)) {
 569                         /* Rockchip has special Image format */
 570                         int ret;
 571
 572                         ret = rockchip_copy_image(ifd, &params);
 573                         if (ret)
 574                                 return ret;
 575                 } else {
 576                         copy_file(ifd, params.datafile, pad_len);
 577                 }
 578                 if (params.type == IH_TYPE_FIRMWARE_IVT) {
 579                         /* Add alignment and IVT */
 580                         uint32_t aligned_filesize = ALIGN(params.file_size,
 581                                                           0x1000);
 582                         flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
 583                                         params.addr, 0, 0, 0, params.addr
 584                                                         + aligned_filesize
 585                                                         - tparams->header_size,
 586                                         params.addr + aligned_filesize
 587                                                         - tparams->header_size
 588                                                         + 0x20, 0 };
 589                         int i = params.file_size;
 590                         for (; i < aligned_filesize; i++) {
 591                                 if (write(ifd, (char *) &i, 1) != 1) {
 592                                         fprintf(stderr,
 593                                                         "%s: Write error on %s: %s\n",
 594                                                         params.cmdname,
 595                                                         params.imagefile,
 596                                                         strerror(errno));
 597                                         exit(EXIT_FAILURE);
 598                                 }
 599                         }
 600                         if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
 601                                         != sizeof(flash_header_v2_t)) {
 602                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 603                                                 params.cmdname,
 604                                                 params.imagefile,
 605                                                 strerror(errno));
 606                                 exit(EXIT_FAILURE);
 607                         }
 608                 }
 609         }
 610
 611         /* We're a bit of paranoid */
 612 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 613    !defined(__sun__) && \
 614    !defined(__FreeBSD__) && \
 615    !defined(__OpenBSD__) && \
 616    !defined(__APPLE__)
 617         (void) fdatasync (ifd);
 618 #else
 619         (void) fsync (ifd);
 620 #endif
 621
 622         if (fstat(ifd, &sbuf) < 0) {
 623                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 624                         params.cmdname, params.imagefile, strerror(errno));
 625                 exit (EXIT_FAILURE);
 626         }
 627         params.file_size = sbuf.st_size;
 628
 629         map_len = sbuf.st_size;
 630         ptr = mmap(0, map_len, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
 631         if (ptr == MAP_FAILED) {
 632                 fprintf (stderr, "%s: Can't map %s: %s\n",
 633                         params.cmdname, params.imagefile, strerror(errno));
 634                 exit (EXIT_FAILURE);
 635         }
 636
 637         /* Setup the image header as per input image type*/
 638         if (tparams->set_header)
 639                 tparams->set_header (ptr, &sbuf, ifd, &params);
 640         else {
 641                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
 642                         params.cmdname, tparams->name, strerror(errno));
 643                 exit (EXIT_FAILURE);
 644         }
 645
 646         /* Print the image information by processing image header */
 647         if (tparams->print_header)
 648                 tparams->print_header (ptr);
 649         else {
 650                 fprintf (stderr, "%s: Can't print header for %s\n",
 651                         params.cmdname, tparams->name);
 652         }
 653
 654         (void)munmap((void *)ptr, map_len);
 655
 656         /* We're a bit of paranoid */
 657 #if defined(_POSIX_SYNCHRONIZED_IO) && \
 658    !defined(__sun__) && \
 659    !defined(__FreeBSD__) && \
 660    !defined(__OpenBSD__) && \
 661    !defined(__APPLE__)
 662         (void) fdatasync (ifd);
 663 #else
 664         (void) fsync (ifd);
 665 #endif
 666
 667         if (close(ifd)) {
 668                 fprintf (stderr, "%s: Write error on %s: %s\n",
 669                         params.cmdname, params.imagefile, strerror(errno));
 670                 exit (EXIT_FAILURE);
 671         }
 672
 673         exit (EXIT_SUCCESS);
 674 }
 675
 676 static void
 677 copy_file (int ifd, const char *datafile, int pad)
 678 {
 679         int dfd;
 680         struct stat sbuf;
 681         unsigned char *ptr;
 682         int tail;
 683         int zero = 0;
 684         uint8_t zeros[4096];
 685         int offset = 0;
 686         int size, ret;
 687         struct image_type_params *tparams = imagetool_get_type(params.type);
 688
 689         memset(zeros, 0, sizeof(zeros));
 690
 691         if (params.vflag) {
 692                 fprintf (stderr, "Adding Image %s\n", datafile);
 693         }
 694
 695         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 696                 fprintf (stderr, "%s: Can't open %s: %s\n",
 697                         params.cmdname, datafile, strerror(errno));
 698                 exit (EXIT_FAILURE);
 699         }
 700
 701         if (fstat(dfd, &sbuf) < 0) {
 702                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 703                         params.cmdname, datafile, strerror(errno));
 704                 exit (EXIT_FAILURE);
 705         }
 706
 707         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
 708         if (ptr == MAP_FAILED) {
 709                 fprintf (stderr, "%s: Can't read %s: %s\n",
 710                         params.cmdname, datafile, strerror(errno));
 711                 exit (EXIT_FAILURE);
 712         }
 713
 714         if (params.xflag) {
 715                 unsigned char *p = NULL;
 716                 /*
 717                  * XIP: do not append the image_header_t at the
 718                  * beginning of the file, but consume the space
 719                  * reserved for it.
 720                  */
 721
 722                 if ((unsigned)sbuf.st_size < tparams->header_size) {
 723                         fprintf (stderr,
 724                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 725                                 params.cmdname, datafile);
 726                         exit (EXIT_FAILURE);
 727                 }
 728
 729                 for (p = ptr; p < ptr + tparams->header_size; p++) {
 730                         if ( *p != 0xff ) {
 731                                 fprintf (stderr,
 732                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 733                                         params.cmdname, datafile);
 734                                 exit (EXIT_FAILURE);
 735                         }
 736                 }
 737
 738                 offset = tparams->header_size;
 739         }
 740
 741         size = sbuf.st_size - offset;
 742
 743         ret = write(ifd, ptr + offset, size);
 744         if (ret != size) {
 745                 if (ret < 0)
 746                         fprintf (stderr, "%s: Write error on %s: %s\n",
 747                                  params.cmdname, params.imagefile, strerror(errno));
 748                 else if (ret < size)
 749                         fprintf (stderr, "%s: Write only %d/%d bytes, "\
 750                                  "probably no space left on the device\n",
 751                                  params.cmdname, ret, size);
 752                 exit (EXIT_FAILURE);
 753         }
 754
 755         tail = size % 4;
 756         if ((pad == 1) && (tail != 0)) {
 757
 758                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 759                         fprintf (stderr, "%s: Write error on %s: %s\n",
 760                                 params.cmdname, params.imagefile,
 761                                 strerror(errno));
 762                         exit (EXIT_FAILURE);
 763                 }
 764         } else if (pad > 1) {
 765                 while (pad > 0) {
 766                         int todo = sizeof(zeros);
 767
 768                         if (todo > pad)
 769                                 todo = pad;
 770                         if (write(ifd, (char *)&zeros, todo) != todo) {
 771                                 fprintf(stderr, "%s: Write error on %s: %s\n",
 772                                         params.cmdname, params.imagefile,
 773                                         strerror(errno));
 774                                 exit(EXIT_FAILURE);
 775                         }
 776                         pad -= todo;
 777                 }
 778         }
 779
 780         (void) munmap((void *)ptr, sbuf.st_size);
 781         (void) close (dfd);
 782 }