tools/mkimage.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * DENX Software Engineering
   4  * Wolfgang Denk, wd@denx.de
   5  * All rights reserved.
   6  */
   7
   8 #include <errno.h>
   9 #include <fcntl.h>
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #ifndef __WIN32__
  14 #include <netinet/in.h>         /* for host / network byte order conversions    */
  15 #endif
  16 #include <sys/mman.h>
  17 #include <sys/stat.h>
  18 #include <time.h>
  19 #include <unistd.h>
  20
  21 #if defined(__BEOS__) || defined(__NetBSD__) || defined(__APPLE__)
  22 #include <inttypes.h>
  23 #endif
  24
  25 #ifdef __WIN32__
  26 typedef unsigned int __u32;
  27
  28 #define SWAP_LONG(x) \
  29         ((__u32)( \
  30                 (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
  31                 (((__u32)(x) & (__u32)0x0000ff00UL) <<  8) | \
  32                 (((__u32)(x) & (__u32)0x00ff0000UL) >>  8) | \
  33                 (((__u32)(x) & (__u32)0xff000000UL) >> 24) ))
  34 typedef         unsigned char   uint8_t;
  35 typedef         unsigned short  uint16_t;
  36 typedef         unsigned int    uint32_t;
  37
  38 #define     ntohl(a)    SWAP_LONG(a)
  39 #define     htonl(a)    SWAP_LONG(a)
  40 #endif  /* __WIN32__ */
  41
  42 #include <image.h>
  43
  44 extern int errno;
  45
  46 #ifndef MAP_FAILED
  47 #define MAP_FAILED (-1)
  48 #endif
  49
  50 char *cmdname;
  51
  52 extern unsigned long crc32 (unsigned long crc, const char *buf, unsigned int len);
  53
  54 typedef struct table_entry {
  55         int     val;            /* as defined in image.h        */
  56         char    *sname;         /* short (input) name           */
  57         char    *lname;         /* long (output) name           */
  58 } table_entry_t;
  59
  60 table_entry_t arch_name[] = {
  61     {   IH_CPU_INVALID, NULL,           "Invalid CPU",          },
  62     {   IH_CPU_ALPHA,   "alpha",        "Alpha",                },
  63     {   IH_CPU_ARM,     "arm",          "ARM",                  },
  64     {   IH_CPU_I386,    "x86",          "Intel x86",            },
  65     {   IH_CPU_IA64,    "ia64",         "IA64",                 },
  66     {   IH_CPU_MIPS,    "mips",         "MIPS",                 },
  67     {   IH_CPU_MIPS64,  "mips64",       "MIPS 64 Bit",          },
  68     {   IH_CPU_PPC,     "ppc",          "PowerPC",              },
  69     {   IH_CPU_S390,    "s390",         "IBM S390",             },
  70     {   IH_CPU_SH,      "sh",           "SuperH",               },
  71     {   IH_CPU_SPARC,   "sparc",        "SPARC",                },
  72     {   IH_CPU_SPARC64, "sparc64",      "SPARC 64 Bit",         },
  73     {   -1,             "",             "",                     },
  74 };
  75
  76 table_entry_t os_name[] = {
  77     {   IH_OS_INVALID,  NULL,           "Invalid OS",           },
  78     {   IH_OS_OPENBSD,  "openbsd",      "OpenBSD",              },
  79     {   IH_OS_NETBSD,   "netbsd",       "NetBSD",               },
  80     {   IH_OS_FREEBSD,  "freebsd",      "FreeBSD",              },
  81     {   IH_OS_4_4BSD,   "4_4bsd",       "4_4BSD",               },
  82     {   IH_OS_LINUX,    "linux",        "Linux",                },
  83     {   IH_OS_SVR4,     "svr4",         "SVR4",                 },
  84     {   IH_OS_ESIX,     "esix",         "Esix",                 },
  85     {   IH_OS_SOLARIS,  "solaris",      "Solaris",              },
  86     {   IH_OS_IRIX,     "irix",         "Irix",                 },
  87     {   IH_OS_SCO,      "sco",          "SCO",                  },
  88     {   IH_OS_DELL,     "dell",         "Dell",                 },
  89     {   IH_OS_NCR,      "ncr",          "NCR",                  },
  90     {   IH_OS_LYNXOS,   "lynxos",       "LynxOS",               },
  91     {   IH_OS_VXWORKS,  "vxworks",      "VxWorks",              },
  92     {   IH_OS_PSOS,     "psos",         "pSOS",                 },
  93     {   IH_OS_QNX,      "qnx",          "QNX",                  },
  94     {   IH_OS_U_BOOT,   "u-boot",       "U-Boot",               },
  95     {   IH_OS_RTEMS,    "rtems",        "RTEMS",                },
  96     {   -1,             "",             "",                     },
  97 };
  98
  99 table_entry_t type_name[] = {
 100     {   IH_TYPE_INVALID,    NULL,         "Invalid Image",      },
 101     {   IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
 102     {   IH_TYPE_KERNEL,     "kernel",     "Kernel Image",       },
 103     {   IH_TYPE_RAMDISK,    "ramdisk",    "RAMDisk Image",      },
 104     {   IH_TYPE_MULTI,      "multi",      "Multi-File Image",   },
 105     {   IH_TYPE_FIRMWARE,   "firmware",   "Firmware",           },
 106     {   IH_TYPE_SCRIPT,     "script",     "Script",             },
 107     {   -1,                 "",           "",                   },
 108 };
 109
 110 table_entry_t comp_name[] = {
 111     {   IH_COMP_NONE,   "none",         "uncompressed",         },
 112     {   IH_COMP_GZIP,   "gzip",         "gzip compressed",      },
 113     {   IH_COMP_BZIP2,  "bzip2",        "bzip2 compressed",     },
 114     {   -1,             "",             "",                     },
 115 };
 116
 117 static  void    copy_file (int, const char *, int);
 118 static  void    usage   (void);
 119 static  void    print_header (image_header_t *);
 120 static  void    print_type (image_header_t *);
 121 static  char    *put_table_entry (table_entry_t *, char *, int);
 122 static  char    *put_arch (int);
 123 static  char    *put_type (int);
 124 static  char    *put_os   (int);
 125 static  char    *put_comp (int);
 126 static  int     get_table_entry (table_entry_t *, char *, char *);
 127 static  int     get_arch(char *);
 128 static  int     get_comp(char *);
 129 static  int     get_os  (char *);
 130 static  int     get_type(char *);
 131
 132
 133 char    *datafile;
 134 char    *imagefile;
 135
 136 int dflag    = 0;
 137 int eflag    = 0;
 138 int lflag    = 0;
 139 int vflag    = 0;
 140 int xflag    = 0;
 141 int opt_os   = IH_OS_LINUX;
 142 int opt_arch = IH_CPU_PPC;
 143 int opt_type = IH_TYPE_KERNEL;
 144 int opt_comp = IH_COMP_GZIP;
 145
 146 image_header_t header;
 147 image_header_t *hdr = &header;
 148
 149 int
 150 main (int argc, char **argv)
 151 {
 152         int ifd;
 153         uint32_t checksum;
 154         uint32_t addr;
 155         uint32_t ep;
 156         struct stat sbuf;
 157         unsigned char *ptr;
 158         char *name = "";
 159
 160         cmdname = *argv;
 161
 162         addr = ep = 0;
 163
 164         while (--argc > 0 && **++argv == '-') {
 165                 while (*++*argv) {
 166                         switch (**argv) {
 167                         case 'l':
 168                                 lflag = 1;
 169                                 break;
 170                         case 'A':
 171                                 if ((--argc <= 0) ||
 172                                     (opt_arch = get_arch(*++argv)) < 0)
 173                                         usage ();
 174                                 goto NXTARG;
 175                         case 'C':
 176                                 if ((--argc <= 0) ||
 177                                     (opt_comp = get_comp(*++argv)) < 0)
 178                                         usage ();
 179                                 goto NXTARG;
 180                         case 'O':
 181                                 if ((--argc <= 0) ||
 182                                     (opt_os = get_os(*++argv)) < 0)
 183                                         usage ();
 184                                 goto NXTARG;
 185                         case 'T':
 186                                 if ((--argc <= 0) ||
 187                                     (opt_type = get_type(*++argv)) < 0)
 188                                         usage ();
 189                                 goto NXTARG;
 190
 191                         case 'a':
 192                                 if (--argc <= 0)
 193                                         usage ();
 194                                 addr = strtoul (*++argv, (char **)&ptr, 16);
 195                                 if (*ptr) {
 196                                         fprintf (stderr,
 197                                                 "%s: invalid load address %s\n",
 198                                                 cmdname, *argv);
 199                                         exit (EXIT_FAILURE);
 200                                 }
 201                                 goto NXTARG;
 202                         case 'd':
 203                                 if (--argc <= 0)
 204                                         usage ();
 205                                 datafile = *++argv;
 206                                 dflag = 1;
 207                                 goto NXTARG;
 208                         case 'e':
 209                                 if (--argc <= 0)
 210                                         usage ();
 211                                 ep = strtoul (*++argv, (char **)&ptr, 16);
 212                                 if (*ptr) {
 213                                         fprintf (stderr,
 214                                                 "%s: invalid entry point %s\n",
 215                                                 cmdname, *argv);
 216                                         exit (EXIT_FAILURE);
 217                                 }
 218                                 eflag = 1;
 219                                 goto NXTARG;
 220                         case 'n':
 221                                 if (--argc <= 0)
 222                                         usage ();
 223                                 name = *++argv;
 224                                 goto NXTARG;
 225                         case 'v':
 226                                 vflag++;
 227                                 break;
 228                         case 'x':
 229                                 xflag++;
 230                                 break;
 231                         default:
 232                                 usage ();
 233                         }
 234                 }
 235 NXTARG:         ;
 236         }
 237
 238         if ((argc != 1) || ((lflag ^ dflag) == 0))
 239                 usage();
 240
 241         if (!eflag) {
 242                 ep = addr;
 243                 /* If XIP, entry point must be after the U-Boot header */
 244                 if (xflag)
 245                         ep += sizeof(image_header_t);
 246         }
 247
 248         /*
 249          * If XIP, ensure the entry point is equal to the load address plus
 250          * the size of the U-Boot header.
 251          */
 252         if (xflag) {
 253                 if (ep != addr + sizeof(image_header_t)) {
 254                         fprintf (stderr, "%s: For XIP, the entry point must be the load addr + %lu\n",
 255                                 cmdname,
 256                                 (unsigned long)sizeof(image_header_t));
 257                         exit (EXIT_FAILURE);
 258                 }
 259         }
 260
 261         imagefile = *argv;
 262
 263         if (lflag) {
 264                 ifd = open(imagefile, O_RDONLY);
 265         } else {
 266 #ifdef __WIN32__
 267                 ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 268 #else
 269                 ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC, 0666);
 270 #endif
 271         }
 272
 273         if (ifd < 0) {
 274                 fprintf (stderr, "%s: Can't open %s: %s\n",
 275                         cmdname, imagefile, strerror(errno));
 276                 exit (EXIT_FAILURE);
 277         }
 278
 279         if (lflag) {
 280                 int len;
 281                 char *data;
 282                 /*
 283                  * list header information of existing image
 284                  */
 285                 if (fstat(ifd, &sbuf) < 0) {
 286                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 287                                 cmdname, imagefile, strerror(errno));
 288                         exit (EXIT_FAILURE);
 289                 }
 290
 291                 if (sbuf.st_size < sizeof(image_header_t)) {
 292                         fprintf (stderr,
 293                                 "%s: Bad size: \"%s\" is no valid image\n",
 294                                 cmdname, imagefile);
 295                         exit (EXIT_FAILURE);
 296                 }
 297
 298                 ptr = (unsigned char *)mmap(0, sbuf.st_size,
 299                                             PROT_READ, MAP_SHARED, ifd, 0);
 300                 if ((caddr_t)ptr == (caddr_t)-1) {
 301                         fprintf (stderr, "%s: Can't read %s: %s\n",
 302                                 cmdname, imagefile, strerror(errno));
 303                         exit (EXIT_FAILURE);
 304                 }
 305
 306                 /*
 307                  * create copy of header so that we can blank out the
 308                  * checksum field for checking - this can't be done
 309                  * on the PROT_READ mapped data.
 310                  */
 311                 memcpy (hdr, ptr, sizeof(image_header_t));
 312
 313                 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
 314                         fprintf (stderr,
 315                                 "%s: Bad Magic Number: \"%s\" is no valid image\n",
 316                                 cmdname, imagefile);
 317                         exit (EXIT_FAILURE);
 318                 }
 319
 320                 data = (char *)hdr;
 321                 len  = sizeof(image_header_t);
 322
 323                 checksum = ntohl(hdr->ih_hcrc);
 324                 hdr->ih_hcrc = htonl(0);        /* clear for re-calculation */
 325
 326                 if (crc32 (0, data, len) != checksum) {
 327                         fprintf (stderr,
 328                                 "*** Warning: \"%s\" has bad header checksum!\n",
 329                                 imagefile);
 330                 }
 331
 332                 data = (char *)(ptr + sizeof(image_header_t));
 333                 len  = sbuf.st_size - sizeof(image_header_t) ;
 334
 335                 if (crc32 (0, data, len) != ntohl(hdr->ih_dcrc)) {
 336                         fprintf (stderr,
 337                                 "*** Warning: \"%s\" has corrupted data!\n",
 338                                 imagefile);
 339                 }
 340
 341                 /* for multi-file images we need the data part, too */
 342                 print_header ((image_header_t *)ptr);
 343
 344                 (void) munmap((void *)ptr, sbuf.st_size);
 345                 (void) close (ifd);
 346
 347                 exit (EXIT_SUCCESS);
 348         }
 349
 350         /*
 351          * Must be -w then:
 352          *
 353          * write dummy header, to be fixed later
 354          */
 355         memset (hdr, 0, sizeof(image_header_t));
 356
 357         if (write(ifd, hdr, sizeof(image_header_t)) != sizeof(image_header_t)) {
 358                 fprintf (stderr, "%s: Write error on %s: %s\n",
 359                         cmdname, imagefile, strerror(errno));
 360                 exit (EXIT_FAILURE);
 361         }
 362
 363         if (opt_type == IH_TYPE_MULTI || opt_type == IH_TYPE_SCRIPT) {
 364                 char *file = datafile;
 365                 unsigned long size;
 366
 367                 for (;;) {
 368                         char *sep = NULL;
 369
 370                         if (file) {
 371                                 if ((sep = strchr(file, ':')) != NULL) {
 372                                         *sep = '\0';
 373                                 }
 374
 375                                 if (stat (file, &sbuf) < 0) {
 376                                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 377                                                 cmdname, file, strerror(errno));
 378                                         exit (EXIT_FAILURE);
 379                                 }
 380                                 size = htonl(sbuf.st_size);
 381                         } else {
 382                                 size = 0;
 383                         }
 384
 385                         if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 386                                 fprintf (stderr, "%s: Write error on %s: %s\n",
 387                                         cmdname, imagefile, strerror(errno));
 388                                 exit (EXIT_FAILURE);
 389                         }
 390
 391                         if (!file) {
 392                                 break;
 393                         }
 394
 395                         if (sep) {
 396                                 *sep = ':';
 397                                 file = sep + 1;
 398                         } else {
 399                                 file = NULL;
 400                         }
 401                 }
 402
 403                 file = datafile;
 404
 405                 for (;;) {
 406                         char *sep = strchr(file, ':');
 407                         if (sep) {
 408                                 *sep = '\0';
 409                                 copy_file (ifd, file, 1);
 410                                 *sep++ = ':';
 411                                 file = sep;
 412                         } else {
 413                                 copy_file (ifd, file, 0);
 414                                 break;
 415                         }
 416                 }
 417         } else {
 418                 copy_file (ifd, datafile, 0);
 419         }
 420
 421         /* We're a bit of paranoid */
 422 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__)
 423         (void) fdatasync (ifd);
 424 #else
 425         (void) fsync (ifd);
 426 #endif
 427
 428         if (fstat(ifd, &sbuf) < 0) {
 429                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 430                         cmdname, imagefile, strerror(errno));
 431                 exit (EXIT_FAILURE);
 432         }
 433
 434         ptr = (unsigned char *)mmap(0, sbuf.st_size,
 435                                     PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 436         if (ptr == (unsigned char *)MAP_FAILED) {
 437                 fprintf (stderr, "%s: Can't map %s: %s\n",
 438                         cmdname, imagefile, strerror(errno));
 439                 exit (EXIT_FAILURE);
 440         }
 441
 442         hdr = (image_header_t *)ptr;
 443
 444         checksum = crc32 (0,
 445                           (const char *)(ptr + sizeof(image_header_t)),
 446                           sbuf.st_size - sizeof(image_header_t)
 447                          );
 448
 449         /* Build new header */
 450         hdr->ih_magic = htonl(IH_MAGIC);
 451         hdr->ih_time  = htonl(sbuf.st_mtime);
 452         hdr->ih_size  = htonl(sbuf.st_size - sizeof(image_header_t));
 453         hdr->ih_load  = htonl(addr);
 454         hdr->ih_ep    = htonl(ep);
 455         hdr->ih_dcrc  = htonl(checksum);
 456         hdr->ih_os    = opt_os;
 457         hdr->ih_arch  = opt_arch;
 458         hdr->ih_type  = opt_type;
 459         hdr->ih_comp  = opt_comp;
 460
 461         strncpy((char *)hdr->ih_name, name, IH_NMLEN);
 462
 463         checksum = crc32(0,(const char *)hdr,sizeof(image_header_t));
 464
 465         hdr->ih_hcrc = htonl(checksum);
 466
 467         print_header (hdr);
 468
 469         (void) munmap((void *)ptr, sbuf.st_size);
 470
 471         /* We're a bit of paranoid */
 472 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__)
 473         (void) fdatasync (ifd);
 474 #else
 475         (void) fsync (ifd);
 476 #endif
 477
 478         if (close(ifd)) {
 479                 fprintf (stderr, "%s: Write error on %s: %s\n",
 480                         cmdname, imagefile, strerror(errno));
 481                 exit (EXIT_FAILURE);
 482         }
 483
 484         exit (EXIT_SUCCESS);
 485 }
 486
 487 static void
 488 copy_file (int ifd, const char *datafile, int pad)
 489 {
 490         int dfd;
 491         struct stat sbuf;
 492         unsigned char *ptr;
 493         int tail;
 494         int zero = 0;
 495         int offset = 0;
 496         int size;
 497
 498         if (vflag) {
 499                 fprintf (stderr, "Adding Image %s\n", datafile);
 500         }
 501
 502         if ((dfd = open(datafile, O_RDONLY)) < 0) {
 503                 fprintf (stderr, "%s: Can't open %s: %s\n",
 504                         cmdname, datafile, strerror(errno));
 505                 exit (EXIT_FAILURE);
 506         }
 507
 508         if (fstat(dfd, &sbuf) < 0) {
 509                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 510                         cmdname, datafile, strerror(errno));
 511                 exit (EXIT_FAILURE);
 512         }
 513
 514         ptr = (unsigned char *)mmap(0, sbuf.st_size,
 515                                     PROT_READ, MAP_SHARED, dfd, 0);
 516         if (ptr == (unsigned char *)MAP_FAILED) {
 517                 fprintf (stderr, "%s: Can't read %s: %s\n",
 518                         cmdname, datafile, strerror(errno));
 519                 exit (EXIT_FAILURE);
 520         }
 521
 522         if (xflag) {
 523                 unsigned char *p = NULL;
 524                 /*
 525                  * XIP: do not append the image_header_t at the
 526                  * beginning of the file, but consume the space
 527                  * reserved for it.
 528                  */
 529
 530                 if (sbuf.st_size < sizeof(image_header_t)) {
 531                         fprintf (stderr,
 532                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 533                                 cmdname, datafile);
 534                         exit (EXIT_FAILURE);
 535                 }
 536
 537                 for (p=ptr; p < ptr+sizeof(image_header_t); p++) {
 538                         if ( *p != 0xff ) {
 539                                 fprintf (stderr,
 540                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 541                                         cmdname, datafile);
 542                                 exit (EXIT_FAILURE);
 543                         }
 544                 }
 545
 546                 offset = sizeof(image_header_t);
 547         }
 548
 549         size = sbuf.st_size - offset;
 550         if (write(ifd, ptr + offset, size) != size) {
 551                 fprintf (stderr, "%s: Write error on %s: %s\n",
 552                         cmdname, imagefile, strerror(errno));
 553                 exit (EXIT_FAILURE);
 554         }
 555
 556         if (pad && ((tail = size % 4) != 0)) {
 557
 558                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 559                         fprintf (stderr, "%s: Write error on %s: %s\n",
 560                                 cmdname, imagefile, strerror(errno));
 561                         exit (EXIT_FAILURE);
 562                 }
 563         }
 564
 565         (void) munmap((void *)ptr, sbuf.st_size);
 566         (void) close (dfd);
 567 }
 568
 569 void
 570 usage ()
 571 {
 572         fprintf (stderr, "Usage: %s -l image\n"
 573                          "          -l ==> list image header information\n"
 574                          "       %s -A arch -O os -T type -C comp "
 575                          "-a addr -e ep -n name -d data_file[:data_file...] image\n",
 576                 cmdname, cmdname);
 577         fprintf (stderr, "          -A ==> set architecture to 'arch'\n"
 578                          "          -O ==> set operating system to 'os'\n"
 579                          "          -T ==> set image type to 'type'\n"
 580                          "          -C ==> set compression type 'comp'\n"
 581                          "          -a ==> set load address to 'addr' (hex)\n"
 582                          "          -e ==> set entry point to 'ep' (hex)\n"
 583                          "          -n ==> set image name to 'name'\n"
 584                          "          -d ==> use image data from 'datafile'\n"
 585                          "          -x ==> set XIP (execute in place)\n"
 586                 );
 587         exit (EXIT_FAILURE);
 588 }
 589
 590 static void
 591 print_header (image_header_t *hdr)
 592 {
 593         time_t timestamp;
 594         uint32_t size;
 595
 596         timestamp = (time_t)ntohl(hdr->ih_time);
 597         size = ntohl(hdr->ih_size);
 598
 599         printf ("Image Name:   %.*s\n", IH_NMLEN, hdr->ih_name);
 600         printf ("Created:      %s", ctime(&timestamp));
 601         printf ("Image Type:   "); print_type(hdr);
 602         printf ("Data Size:    %d Bytes = %.2f kB = %.2f MB\n",
 603                 size, (double)size / 1.024e3, (double)size / 1.048576e6 );
 604         printf ("Load Address: 0x%08x\n", ntohl(hdr->ih_load));
 605         printf ("Entry Point:  0x%08x\n", ntohl(hdr->ih_ep));
 606
 607         if (hdr->ih_type == IH_TYPE_MULTI || hdr->ih_type == IH_TYPE_SCRIPT) {
 608                 int i, ptrs;
 609                 uint32_t pos;
 610                 unsigned long *len_ptr = (unsigned long *) (
 611                                         (unsigned long)hdr + sizeof(image_header_t)
 612                                 );
 613
 614                 /* determine number of images first (to calculate image offsets) */
 615                 for (i=0; len_ptr[i]; ++i)      /* null pointer terminates list */
 616                         ;
 617                 ptrs = i;               /* null pointer terminates list */
 618
 619                 pos = sizeof(image_header_t) + ptrs * sizeof(long);
 620                 printf ("Contents:\n");
 621                 for (i=0; len_ptr[i]; ++i) {
 622                         size = ntohl(len_ptr[i]);
 623
 624                         printf ("   Image %d: %8d Bytes = %4d kB = %d MB\n",
 625                                 i, size, size>>10, size>>20);
 626                         if (hdr->ih_type == IH_TYPE_SCRIPT && i > 0) {
 627                                 /*
 628                                  * the user may need to know offsets
 629                                  * if planning to do something with
 630                                  * multiple files
 631                                  */
 632                                 printf ("    Offset = %08x\n", pos);
 633                         }
 634                         /* copy_file() will pad the first files to even word align */
 635                         size += 3;
 636                         size &= ~3;
 637                         pos += size;
 638                 }
 639         }
 640 }
 641
 642
 643 static void
 644 print_type (image_header_t *hdr)
 645 {
 646         printf ("%s %s %s (%s)\n",
 647                 put_arch (hdr->ih_arch),
 648                 put_os   (hdr->ih_os  ),
 649                 put_type (hdr->ih_type),
 650                 put_comp (hdr->ih_comp)
 651         );
 652 }
 653
 654 static char *put_arch (int arch)
 655 {
 656         return (put_table_entry(arch_name, "Unknown Architecture", arch));
 657 }
 658
 659 static char *put_os (int os)
 660 {
 661         return (put_table_entry(os_name, "Unknown OS", os));
 662 }
 663
 664 static char *put_type (int type)
 665 {
 666         return (put_table_entry(type_name, "Unknown Image", type));
 667 }
 668
 669 static char *put_comp (int comp)
 670 {
 671         return (put_table_entry(comp_name, "Unknown Compression", comp));
 672 }
 673
 674 static char *put_table_entry (table_entry_t *table, char *msg, int type)
 675 {
 676         for (; table->val>=0; ++table) {
 677                 if (table->val == type)
 678                         return (table->lname);
 679         }
 680         return (msg);
 681 }
 682
 683 static int get_arch(char *name)
 684 {
 685         return (get_table_entry(arch_name, "CPU", name));
 686 }
 687
 688
 689 static int get_comp(char *name)
 690 {
 691         return (get_table_entry(comp_name, "Compression", name));
 692 }
 693
 694
 695 static int get_os (char *name)
 696 {
 697         return (get_table_entry(os_name, "OS", name));
 698 }
 699
 700
 701 static int get_type(char *name)
 702 {
 703         return (get_table_entry(type_name, "Image", name));
 704 }
 705
 706 static int get_table_entry (table_entry_t *table, char *msg, char *name)
 707 {
 708         table_entry_t *t;
 709         int first = 1;
 710
 711         for (t=table; t->val>=0; ++t) {
 712                 if (t->sname && strcasecmp(t->sname, name)==0)
 713                         return (t->val);
 714         }
 715         fprintf (stderr, "\nInvalid %s Type - valid names are", msg);
 716         for (t=table; t->val>=0; ++t) {
 717                 if (t->sname == NULL)
 718                         continue;
 719                 fprintf (stderr, "%c %s", (first) ? ':' : ',', t->sname);
 720                 first = 0;
 721         }
 722         fprintf (stderr, "\n");
 723         return (-1);
 724 }