tools/mkimage.c

   1 /*
   2  * (C) Copyright 2000-2004
   3  * DENX Software Engineering
   4  * Wolfgang Denk, wd@denx.de
   5  * All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include "mkimage.h"
  24 #include <image.h>
  25
  26 extern int errno;
  27
  28 #ifndef MAP_FAILED
  29 #define MAP_FAILED (-1)
  30 #endif
  31
  32 char *cmdname;
  33
  34 extern unsigned long crc32 (unsigned long crc, const char *buf, unsigned int len);
  35
  36 typedef struct table_entry {
  37         int     val;            /* as defined in image.h        */
  38         char    *sname;         /* short (input) name           */
  39         char    *lname;         /* long (output) name           */
  40 } table_entry_t;
  41
  42 table_entry_t arch_name[] = {
  43     {   IH_ARCH_INVALID,        NULL,           "Invalid CPU",  },
  44     {   IH_ARCH_ALPHA,          "alpha",        "Alpha",        },
  45     {   IH_ARCH_ARM,            "arm",          "ARM",          },
  46     {   IH_ARCH_I386,           "x86",          "Intel x86",    },
  47     {   IH_ARCH_IA64,           "ia64",         "IA64",         },
  48     {   IH_ARCH_M68K,           "m68k",         "MC68000",      },
  49     {   IH_ARCH_MICROBLAZE,     "microblaze",   "MicroBlaze",   },
  50     {   IH_ARCH_MIPS,           "mips",         "MIPS",         },
  51     {   IH_ARCH_MIPS64,         "mips64",       "MIPS 64 Bit",  },
  52     {   IH_ARCH_NIOS,           "nios",         "NIOS",         },
  53     {   IH_ARCH_NIOS2,          "nios2",        "NIOS II",      },
  54     {   IH_ARCH_PPC,            "ppc",          "PowerPC",      },
  55     {   IH_ARCH_S390,           "s390",         "IBM S390",     },
  56     {   IH_ARCH_SH,             "sh",           "SuperH",       },
  57     {   IH_ARCH_SPARC,          "sparc",        "SPARC",        },
  58     {   IH_ARCH_SPARC64,        "sparc64",      "SPARC 64 Bit", },
  59     {   IH_ARCH_BLACKFIN,       "blackfin",     "Blackfin",     },
  60     {   IH_ARCH_AVR32,          "avr32",        "AVR32",        },
  61     {   -1,                     "",             "",             },
  62 };
  63
  64 table_entry_t os_name[] = {
  65     {   IH_OS_INVALID,  NULL,           "Invalid OS",           },
  66     {   IH_OS_4_4BSD,   "4_4bsd",       "4_4BSD",               },
  67     {   IH_OS_ARTOS,    "artos",        "ARTOS",                },
  68     {   IH_OS_DELL,     "dell",         "Dell",                 },
  69     {   IH_OS_ESIX,     "esix",         "Esix",                 },
  70     {   IH_OS_FREEBSD,  "freebsd",      "FreeBSD",              },
  71     {   IH_OS_IRIX,     "irix",         "Irix",                 },
  72     {   IH_OS_LINUX,    "linux",        "Linux",                },
  73     {   IH_OS_LYNXOS,   "lynxos",       "LynxOS",               },
  74     {   IH_OS_NCR,      "ncr",          "NCR",                  },
  75     {   IH_OS_NETBSD,   "netbsd",       "NetBSD",               },
  76     {   IH_OS_OPENBSD,  "openbsd",      "OpenBSD",              },
  77     {   IH_OS_PSOS,     "psos",         "pSOS",                 },
  78     {   IH_OS_QNX,      "qnx",          "QNX",                  },
  79     {   IH_OS_RTEMS,    "rtems",        "RTEMS",                },
  80     {   IH_OS_SCO,      "sco",          "SCO",                  },
  81     {   IH_OS_SOLARIS,  "solaris",      "Solaris",              },
  82     {   IH_OS_SVR4,     "svr4",         "SVR4",                 },
  83     {   IH_OS_U_BOOT,   "u-boot",       "U-Boot",               },
  84     {   IH_OS_VXWORKS,  "vxworks",      "VxWorks",              },
  85     {   -1,             "",             "",                     },
  86 };
  87
  88 table_entry_t type_name[] = {
  89     {   IH_TYPE_INVALID,    NULL,         "Invalid Image",      },
  90     {   IH_TYPE_FILESYSTEM, "filesystem", "Filesystem Image",   },
  91     {   IH_TYPE_FIRMWARE,   "firmware",   "Firmware",           },
  92     {   IH_TYPE_KERNEL,     "kernel",     "Kernel Image",       },
  93     {   IH_TYPE_MULTI,      "multi",      "Multi-File Image",   },
  94     {   IH_TYPE_RAMDISK,    "ramdisk",    "RAMDisk Image",      },
  95     {   IH_TYPE_SCRIPT,     "script",     "Script",             },
  96     {   IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
  97     {   IH_TYPE_FLATDT,     "flat_dt",    "Flat Device Tree",   },
  98     {   -1,                 "",           "",                   },
  99 };
 100
 101 table_entry_t comp_name[] = {
 102     {   IH_COMP_NONE,   "none",         "uncompressed",         },
 103     {   IH_COMP_BZIP2,  "bzip2",        "bzip2 compressed",     },
 104     {   IH_COMP_GZIP,   "gzip",         "gzip compressed",      },
 105     {   -1,             "",             "",                     },
 106 };
 107
 108 static  void    copy_file (int, const char *, int);
 109 static  void    usage   (void);
 110 static  void    print_header (image_header_t *);
 111 static  void    print_type (image_header_t *);
 112 static  char    *put_table_entry (table_entry_t *, char *, int);
 113 static  char    *put_arch (int);
 114 static  char    *put_type (int);
 115 static  char    *put_os   (int);
 116 static  char    *put_comp (int);
 117 static  int     get_table_entry (table_entry_t *, char *, char *);
 118 static  int     get_arch(char *);
 119 static  int     get_comp(char *);
 120 static  int     get_os  (char *);
 121 static  int     get_type(char *);
 122
 123
 124 char    *datafile;
 125 char    *imagefile;
 126
 127 int dflag    = 0;
 128 int eflag    = 0;
 129 int lflag    = 0;
 130 int vflag    = 0;
 131 int xflag    = 0;
 132 int opt_os   = IH_OS_LINUX;
 133 int opt_arch = IH_ARCH_PPC;
 134 int opt_type = IH_TYPE_KERNEL;
 135 int opt_comp = IH_COMP_GZIP;
 136
 137 image_header_t header;
 138 image_header_t *hdr = &header;
 139
 140 int
 141 main (int argc, char **argv)
 142 {
 143         int ifd;
 144         uint32_t checksum;
 145         uint32_t addr;
 146         uint32_t ep;
 147         struct stat sbuf;
 148         unsigned char *ptr;
 149         char *name = "";
 150
 151         cmdname = *argv;
 152
 153         addr = ep = 0;
 154
 155         while (--argc > 0 && **++argv == '-') {
 156                 while (*++*argv) {
 157                         switch (**argv) {
 158                         case 'l':
 159                                 lflag = 1;
 160                                 break;
 161                         case 'A':
 162                                 if ((--argc <= 0) ||
 163                                     (opt_arch = get_arch(*++argv)) < 0)
 164                                         usage ();
 165                                 goto NXTARG;
 166                         case 'C':
 167                                 if ((--argc <= 0) ||
 168                                     (opt_comp = get_comp(*++argv)) < 0)
 169                                         usage ();
 170                                 goto NXTARG;
 171                         case 'O':
 172                                 if ((--argc <= 0) ||
 173                                     (opt_os = get_os(*++argv)) < 0)
 174                                         usage ();
 175                                 goto NXTARG;
 176                         case 'T':
 177                                 if ((--argc <= 0) ||
 178                                     (opt_type = get_type(*++argv)) < 0)
 179                                         usage ();
 180                                 goto NXTARG;
 181
 182                         case 'a':
 183                                 if (--argc <= 0)
 184                                         usage ();
 185                                 addr = strtoul (*++argv, (char **)&ptr, 16);
 186                                 if (*ptr) {
 187                                         fprintf (stderr,
 188                                                 "%s: invalid load address %s\n",
 189                                                 cmdname, *argv);
 190                                         exit (EXIT_FAILURE);
 191                                 }
 192                                 goto NXTARG;
 193                         case 'd':
 194                                 if (--argc <= 0)
 195                                         usage ();
 196                                 datafile = *++argv;
 197                                 dflag = 1;
 198                                 goto NXTARG;
 199                         case 'e':
 200                                 if (--argc <= 0)
 201                                         usage ();
 202                                 ep = strtoul (*++argv, (char **)&ptr, 16);
 203                                 if (*ptr) {
 204                                         fprintf (stderr,
 205                                                 "%s: invalid entry point %s\n",
 206                                                 cmdname, *argv);
 207                                         exit (EXIT_FAILURE);
 208                                 }
 209                                 eflag = 1;
 210                                 goto NXTARG;
 211                         case 'n':
 212                                 if (--argc <= 0)
 213                                         usage ();
 214                                 name = *++argv;
 215                                 goto NXTARG;
 216                         case 'v':
 217                                 vflag++;
 218                                 break;
 219                         case 'x':
 220                                 xflag++;
 221                                 break;
 222                         default:
 223                                 usage ();
 224                         }
 225                 }
 226 NXTARG:         ;
 227         }
 228
 229         if ((argc != 1) || ((lflag ^ dflag) == 0))
 230                 usage();
 231
 232         if (!eflag) {
 233                 ep = addr;
 234                 /* If XIP, entry point must be after the U-Boot header */
 235                 if (xflag)
 236                         ep += image_get_header_size ();
 237         }
 238
 239         /*
 240          * If XIP, ensure the entry point is equal to the load address plus
 241          * the size of the U-Boot header.
 242          */
 243         if (xflag) {
 244                 if (ep != addr + image_get_header_size ()) {
 245                         fprintf (stderr,
 246                                 "%s: For XIP, the entry point must be the load addr + %lu\n",
 247                                 cmdname,
 248                                 (unsigned long)image_get_header_size ());
 249                         exit (EXIT_FAILURE);
 250                 }
 251         }
 252
 253         imagefile = *argv;
 254
 255         if (lflag) {
 256                 ifd = open(imagefile, O_RDONLY|O_BINARY);
 257         } else {
 258                 ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 259         }
 260
 261         if (ifd < 0) {
 262                 fprintf (stderr, "%s: Can't open %s: %s\n",
 263                         cmdname, imagefile, strerror(errno));
 264                 exit (EXIT_FAILURE);
 265         }
 266
 267         if (lflag) {
 268                 int len;
 269                 char *data;
 270                 /*
 271                  * list header information of existing image
 272                  */
 273                 if (fstat(ifd, &sbuf) < 0) {
 274                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 275                                 cmdname, imagefile, strerror(errno));
 276                         exit (EXIT_FAILURE);
 277                 }
 278
 279                 if ((unsigned)sbuf.st_size < image_get_header_size ()) {
 280                         fprintf (stderr,
 281                                 "%s: Bad size: \"%s\" is no valid image\n",
 282                                 cmdname, imagefile);
 283                         exit (EXIT_FAILURE);
 284                 }
 285
 286                 ptr = (unsigned char *)mmap(0, sbuf.st_size,
 287                                             PROT_READ, MAP_SHARED, ifd, 0);
 288                 if ((caddr_t)ptr == (caddr_t)-1) {
 289                         fprintf (stderr, "%s: Can't read %s: %s\n",
 290                                 cmdname, imagefile, strerror(errno));
 291                         exit (EXIT_FAILURE);
 292                 }
 293
 294                 /*
 295                  * image_check_hcrc() creates copy of header so that
 296                  * we can blank out the checksum field for checking -
 297                  * this can't be done on the PROT_READ mapped data.
 298                  */
 299                 hdr = (image_header_t *)ptr;
 300
 301                 if (!image_check_magic (hdr)) {
 302                         fprintf (stderr,
 303                                 "%s: Bad Magic Number: \"%s\" is no valid image\n",
 304                                 cmdname, imagefile);
 305                         exit (EXIT_FAILURE);
 306                 }
 307
 308                 if (!image_check_hcrc (hdr)) {
 309                         fprintf (stderr,
 310                                 "%s: ERROR: \"%s\" has bad header checksum!\n",
 311                                 cmdname, imagefile);
 312                         exit (EXIT_FAILURE);
 313                 }
 314
 315                 data = (char *)image_get_data (hdr);
 316                 len  = sbuf.st_size - image_get_header_size ();
 317
 318                 if (crc32(0, data, len) != image_get_dcrc (hdr)) {
 319                         fprintf (stderr,
 320                                 "%s: ERROR: \"%s\" has corrupted data!\n",
 321                                 cmdname, imagefile);
 322                         exit (EXIT_FAILURE);
 323                 }
 324
 325                 /* for multi-file images we need the data part, too */
 326                 print_header ((image_header_t *)ptr);
 327
 328                 (void) munmap((void *)ptr, sbuf.st_size);
 329                 (void) close (ifd);
 330
 331                 exit (EXIT_SUCCESS);
 332         }
 333
 334         /*
 335          * Must be -w then:
 336          *
 337          * write dummy header, to be fixed later
 338          */
 339         memset (hdr, 0, image_get_header_size ());
 340
 341         if (write(ifd, hdr, image_get_header_size ()) != image_get_header_size ()) {
 342                 fprintf (stderr, "%s: Write error on %s: %s\n",
 343                         cmdname, imagefile, strerror(errno));
 344                 exit (EXIT_FAILURE);
 345         }
 346
 347         if (opt_type == IH_TYPE_MULTI || opt_type == IH_TYPE_SCRIPT) {
 348                 char *file = datafile;
 349                 uint32_t size;
 350
 351                 for (;;) {
 352                         char *sep = NULL;
 353
 354                         if (file) {
 355                                 if ((sep = strchr(file, ':')) != NULL) {
 356                                         *sep = '\0';
 357                                 }
 358
 359                                 if (stat (file, &sbuf) < 0) {
 360                                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 361                                                 cmdname, file, strerror(errno));
 362                                         exit (EXIT_FAILURE);
 363                                 }
 364                                 size = cpu_to_image (sbuf.st_size);
 365                         } else {
 366                                 size = 0;
 367                         }
 368
 369                         if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 370                                 fprintf (stderr, "%s: Write error on %s: %s\n",
 371                                         cmdname, imagefile, strerror(errno));
 372                                 exit (EXIT_FAILURE);
 373                         }
 374
 375                         if (!file) {
 376                                 break;
 377                         }
 378
 379                         if (sep) {
 380                                 *sep = ':';
 381                                 file = sep + 1;
 382                         } else {
 383                                 file = NULL;
 384                         }
 385                 }
 386
 387                 file = datafile;
 388
 389                 for (;;) {
 390                         char *sep = strchr(file, ':');
 391                         if (sep) {
 392                                 *sep = '\0';
 393                                 copy_file (ifd, file, 1);
 394                                 *sep++ = ':';
 395                                 file = sep;
 396                         } else {
 397                                 copy_file (ifd, file, 0);
 398                                 break;
 399                         }
 400                 }
 401         } else {
 402                 copy_file (ifd, datafile, 0);
 403         }
 404
 405         /* We're a bit of paranoid */
 406 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__) && !defined(__APPLE__)
 407         (void) fdatasync (ifd);
 408 #else
 409         (void) fsync (ifd);
 410 #endif
 411
 412         if (fstat(ifd, &sbuf) < 0) {
 413                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 414                         cmdname, imagefile, strerror(errno));
 415                 exit (EXIT_FAILURE);
 416         }
 417
 418         ptr = (unsigned char *)mmap(0, sbuf.st_size,
 419                                     PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 420         if (ptr == (unsigned char *)MAP_FAILED) {
 421                 fprintf (stderr, "%s: Can't map %s: %s\n",
 422                         cmdname, imagefile, strerror(errno));
 423                 exit (EXIT_FAILURE);
 424         }
 425
 426         hdr = (image_header_t *)ptr;
 427
 428         checksum = crc32 (0,
 429                           (const char *)(ptr + image_get_header_size ()),
 430                           sbuf.st_size - image_get_header_size ()
 431                          );
 432
 433         /* Build new header */
 434         image_set_magic (hdr, IH_MAGIC);
 435         image_set_time (hdr, sbuf.st_mtime);
 436         image_set_size (hdr, sbuf.st_size - image_get_header_size ());
 437         image_set_load (hdr, addr);
 438         image_set_ep (hdr, ep);
 439         image_set_dcrc (hdr, checksum);
 440         image_set_os (hdr, opt_os);
 441         image_set_arch (hdr, opt_arch);
 442         image_set_type (hdr, opt_type);
 443         image_set_comp (hdr, opt_comp);
 444
 445         image_set_name (hdr, name);
 446
 447         checksum = crc32 (0, (const char *)hdr, image_get_header_size ());
 448
 449         image_set_hcrc (hdr, checksum);
 450
 451         print_header (hdr);
 452
 453         (void) munmap((void *)ptr, sbuf.st_size);
 454
 455         /* We're a bit of paranoid */
 456 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__) && !defined(__APPLE__)
 457         (void) fdatasync (ifd);
 458 #else
 459         (void) fsync (ifd);
 460 #endif
 461
 462         if (close(ifd)) {
 463                 fprintf (stderr, "%s: Write error on %s: %s\n",
 464                         cmdname, imagefile, strerror(errno));
 465                 exit (EXIT_FAILURE);
 466         }
 467
 468         exit (EXIT_SUCCESS);
 469 }
 470
 471 static void
 472 copy_file (int ifd, const char *datafile, int pad)
 473 {
 474         int dfd;
 475         struct stat sbuf;
 476         unsigned char *ptr;
 477         int tail;
 478         int zero = 0;
 479         int offset = 0;
 480         int size;
 481
 482         if (vflag) {
 483                 fprintf (stderr, "Adding Image %s\n", datafile);
 484         }
 485
 486         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 487                 fprintf (stderr, "%s: Can't open %s: %s\n",
 488                         cmdname, datafile, strerror(errno));
 489                 exit (EXIT_FAILURE);
 490         }
 491
 492         if (fstat(dfd, &sbuf) < 0) {
 493                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 494                         cmdname, datafile, strerror(errno));
 495                 exit (EXIT_FAILURE);
 496         }
 497
 498         ptr = (unsigned char *)mmap(0, sbuf.st_size,
 499                                     PROT_READ, MAP_SHARED, dfd, 0);
 500         if (ptr == (unsigned char *)MAP_FAILED) {
 501                 fprintf (stderr, "%s: Can't read %s: %s\n",
 502                         cmdname, datafile, strerror(errno));
 503                 exit (EXIT_FAILURE);
 504         }
 505
 506         if (xflag) {
 507                 unsigned char *p = NULL;
 508                 /*
 509                  * XIP: do not append the image_header_t at the
 510                  * beginning of the file, but consume the space
 511                  * reserved for it.
 512                  */
 513
 514                 if ((unsigned)sbuf.st_size < image_get_header_size ()) {
 515                         fprintf (stderr,
 516                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 517                                 cmdname, datafile);
 518                         exit (EXIT_FAILURE);
 519                 }
 520
 521                 for (p = ptr; p < ptr + image_get_header_size (); p++) {
 522                         if ( *p != 0xff ) {
 523                                 fprintf (stderr,
 524                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 525                                         cmdname, datafile);
 526                                 exit (EXIT_FAILURE);
 527                         }
 528                 }
 529
 530                 offset = image_get_header_size ();
 531         }
 532
 533         size = sbuf.st_size - offset;
 534         if (write(ifd, ptr + offset, size) != size) {
 535                 fprintf (stderr, "%s: Write error on %s: %s\n",
 536                         cmdname, imagefile, strerror(errno));
 537                 exit (EXIT_FAILURE);
 538         }
 539
 540         if (pad && ((tail = size % 4) != 0)) {
 541
 542                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 543                         fprintf (stderr, "%s: Write error on %s: %s\n",
 544                                 cmdname, imagefile, strerror(errno));
 545                         exit (EXIT_FAILURE);
 546                 }
 547         }
 548
 549         (void) munmap((void *)ptr, sbuf.st_size);
 550         (void) close (dfd);
 551 }
 552
 553 void
 554 usage ()
 555 {
 556         fprintf (stderr, "Usage: %s -l image\n"
 557                          "          -l ==> list image header information\n"
 558                          "       %s [-x] -A arch -O os -T type -C comp "
 559                          "-a addr -e ep -n name -d data_file[:data_file...] image\n",
 560                 cmdname, cmdname);
 561         fprintf (stderr, "          -A ==> set architecture to 'arch'\n"
 562                          "          -O ==> set operating system to 'os'\n"
 563                          "          -T ==> set image type to 'type'\n"
 564                          "          -C ==> set compression type 'comp'\n"
 565                          "          -a ==> set load address to 'addr' (hex)\n"
 566                          "          -e ==> set entry point to 'ep' (hex)\n"
 567                          "          -n ==> set image name to 'name'\n"
 568                          "          -d ==> use image data from 'datafile'\n"
 569                          "          -x ==> set XIP (execute in place)\n"
 570                 );
 571         exit (EXIT_FAILURE);
 572 }
 573
 574 static void
 575 print_header (image_header_t *hdr)
 576 {
 577         time_t timestamp;
 578         uint32_t size;
 579
 580         timestamp = (time_t)image_get_time (hdr);
 581         size = image_get_data_size (hdr);
 582
 583         printf ("Image Name:   %.*s\n", IH_NMLEN, image_get_name (hdr));
 584         printf ("Created:      %s", ctime(&timestamp));
 585         printf ("Image Type:   "); print_type(hdr);
 586         printf ("Data Size:    %d Bytes = %.2f kB = %.2f MB\n",
 587                 size, (double)size / 1.024e3, (double)size / 1.048576e6 );
 588         printf ("Load Address: 0x%08X\n", image_get_load (hdr));
 589         printf ("Entry Point:  0x%08X\n", image_get_ep (hdr));
 590
 591         if (image_check_type (hdr, IH_TYPE_MULTI) ||
 592                         image_check_type (hdr, IH_TYPE_SCRIPT)) {
 593                 int i, ptrs;
 594                 uint32_t pos;
 595                 uint32_t *len_ptr = (uint32_t *) (
 596                                         (unsigned long)hdr + image_get_header_size ()
 597                                 );
 598
 599                 /* determine number of images first (to calculate image offsets) */
 600                 for (i=0; len_ptr[i]; ++i)      /* null pointer terminates list */
 601                         ;
 602                 ptrs = i;               /* null pointer terminates list */
 603
 604                 pos = image_get_header_size () + ptrs * sizeof(long);
 605                 printf ("Contents:\n");
 606                 for (i=0; len_ptr[i]; ++i) {
 607                         size = image_to_cpu (len_ptr[i]);
 608
 609                         printf ("   Image %d: %8d Bytes = %4d kB = %d MB\n",
 610                                 i, size, size>>10, size>>20);
 611                         if (image_check_type (hdr, IH_TYPE_SCRIPT) && i > 0) {
 612                                 /*
 613                                  * the user may need to know offsets
 614                                  * if planning to do something with
 615                                  * multiple files
 616                                  */
 617                                 printf ("    Offset = %08X\n", pos);
 618                         }
 619                         /* copy_file() will pad the first files to even word align */
 620                         size += 3;
 621                         size &= ~3;
 622                         pos += size;
 623                 }
 624         }
 625 }
 626
 627
 628 static void
 629 print_type (image_header_t *hdr)
 630 {
 631         printf ("%s %s %s (%s)\n",
 632                 put_arch (image_get_arch (hdr)),
 633                 put_os   (image_get_os (hdr)),
 634                 put_type (image_get_type (hdr)),
 635                 put_comp (image_get_comp (hdr))
 636         );
 637 }
 638
 639 static char *put_arch (int arch)
 640 {
 641         return (put_table_entry(arch_name, "Unknown Architecture", arch));
 642 }
 643
 644 static char *put_os (int os)
 645 {
 646         return (put_table_entry(os_name, "Unknown OS", os));
 647 }
 648
 649 static char *put_type (int type)
 650 {
 651         return (put_table_entry(type_name, "Unknown Image", type));
 652 }
 653
 654 static char *put_comp (int comp)
 655 {
 656         return (put_table_entry(comp_name, "Unknown Compression", comp));
 657 }
 658
 659 static char *put_table_entry (table_entry_t *table, char *msg, int type)
 660 {
 661         for (; table->val>=0; ++table) {
 662                 if (table->val == type)
 663                         return (table->lname);
 664         }
 665         return (msg);
 666 }
 667
 668 static int get_arch(char *name)
 669 {
 670         return (get_table_entry(arch_name, "CPU", name));
 671 }
 672
 673
 674 static int get_comp(char *name)
 675 {
 676         return (get_table_entry(comp_name, "Compression", name));
 677 }
 678
 679
 680 static int get_os (char *name)
 681 {
 682         return (get_table_entry(os_name, "OS", name));
 683 }
 684
 685
 686 static int get_type(char *name)
 687 {
 688         return (get_table_entry(type_name, "Image", name));
 689 }
 690
 691 static int get_table_entry (table_entry_t *table, char *msg, char *name)
 692 {
 693         table_entry_t *t;
 694         int first = 1;
 695
 696         for (t=table; t->val>=0; ++t) {
 697                 if (t->sname && strcasecmp(t->sname, name)==0)
 698                         return (t->val);
 699         }
 700         fprintf (stderr, "\nInvalid %s Type - valid names are", msg);
 701         for (t=table; t->val>=0; ++t) {
 702                 if (t->sname == NULL)
 703                         continue;
 704                 fprintf (stderr, "%c %s", (first) ? ':' : ',', t->sname);
 705                 first = 0;
 706         }
 707         fprintf (stderr, "\n");
 708         return (-1);
 709 }