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 <errno.h>
  24 #include <fcntl.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #ifndef __WIN32__
  29 #include <netinet/in.h>         /* for host / network byte order conversions    */
  30 #endif
  31 #include <sys/mman.h>
  32 #include <sys/stat.h>
  33 #include <time.h>
  34 #include <unistd.h>
  35
  36 #if defined(__BEOS__) || defined(__NetBSD__) || defined(__APPLE__)
  37 #include <inttypes.h>
  38 #endif
  39
  40 #ifdef __WIN32__
  41 typedef unsigned int __u32;
  42
  43 #define SWAP_LONG(x) \
  44         ((__u32)( \
  45                 (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
  46                 (((__u32)(x) & (__u32)0x0000ff00UL) <<  8) | \
  47                 (((__u32)(x) & (__u32)0x00ff0000UL) >>  8) | \
  48                 (((__u32)(x) & (__u32)0xff000000UL) >> 24) ))
  49 typedef         unsigned char   uint8_t;
  50 typedef         unsigned short  uint16_t;
  51 typedef         unsigned int    uint32_t;
  52
  53 #define     ntohl(a)    SWAP_LONG(a)
  54 #define     htonl(a)    SWAP_LONG(a)
  55 #endif  /* __WIN32__ */
  56
  57 #ifndef O_BINARY                /* should be define'd on __WIN32__ */
  58 #define O_BINARY        0
  59 #endif
  60
  61 #include <image.h>
  62
  63 extern int errno;
  64
  65 #ifndef MAP_FAILED
  66 #define MAP_FAILED (-1)
  67 #endif
  68
  69 char *cmdname;
  70
  71 extern unsigned long crc32 (unsigned long crc, const char *buf, unsigned int len);
  72
  73 typedef struct table_entry {
  74         int     val;            /* as defined in image.h        */
  75         char    *sname;         /* short (input) name           */
  76         char    *lname;         /* long (output) name           */
  77 } table_entry_t;
  78
  79 table_entry_t arch_name[] = {
  80     {   IH_CPU_INVALID,         NULL,           "Invalid CPU",  },
  81     {   IH_CPU_ALPHA,           "alpha",        "Alpha",        },
  82     {   IH_CPU_ARM,             "arm",          "ARM",          },
  83     {   IH_CPU_I386,            "x86",          "Intel x86",    },
  84     {   IH_CPU_IA64,            "ia64",         "IA64",         },
  85     {   IH_CPU_M68K,            "m68k",         "MC68000",      },
  86     {   IH_CPU_MICROBLAZE,      "microblaze",   "MicroBlaze",   },
  87     {   IH_CPU_MIPS,            "mips",         "MIPS",         },
  88     {   IH_CPU_MIPS64,          "mips64",       "MIPS 64 Bit",  },
  89     {   IH_CPU_NIOS,            "nios",         "NIOS",         },
  90     {   IH_CPU_NIOS2,           "nios2",        "NIOS II",      },
  91     {   IH_CPU_PPC,             "ppc",          "PowerPC",      },
  92     {   IH_CPU_S390,            "s390",         "IBM S390",     },
  93     {   IH_CPU_SH,              "sh",           "SuperH",       },
  94     {   IH_CPU_SPARC,           "sparc",        "SPARC",        },
  95     {   IH_CPU_SPARC64,         "sparc64",      "SPARC 64 Bit", },
  96     {   IH_CPU_BLACKFIN,        "blackfin",     "Blackfin",     },
  97     {   -1,                     "",             "",             },
  98 };
  99
 100 table_entry_t os_name[] = {
 101     {   IH_OS_INVALID,  NULL,           "Invalid OS",           },
 102     {   IH_OS_4_4BSD,   "4_4bsd",       "4_4BSD",               },
 103     {   IH_OS_ARTOS,    "artos",        "ARTOS",                },
 104     {   IH_OS_DELL,     "dell",         "Dell",                 },
 105     {   IH_OS_ESIX,     "esix",         "Esix",                 },
 106     {   IH_OS_FREEBSD,  "freebsd",      "FreeBSD",              },
 107     {   IH_OS_IRIX,     "irix",         "Irix",                 },
 108     {   IH_OS_LINUX,    "linux",        "Linux",                },
 109     {   IH_OS_LYNXOS,   "lynxos",       "LynxOS",               },
 110     {   IH_OS_NCR,      "ncr",          "NCR",                  },
 111     {   IH_OS_NETBSD,   "netbsd",       "NetBSD",               },
 112     {   IH_OS_OPENBSD,  "openbsd",      "OpenBSD",              },
 113     {   IH_OS_PSOS,     "psos",         "pSOS",                 },
 114     {   IH_OS_QNX,      "qnx",          "QNX",                  },
 115     {   IH_OS_RTEMS,    "rtems",        "RTEMS",                },
 116     {   IH_OS_SCO,      "sco",          "SCO",                  },
 117     {   IH_OS_SOLARIS,  "solaris",      "Solaris",              },
 118     {   IH_OS_SVR4,     "svr4",         "SVR4",                 },
 119     {   IH_OS_U_BOOT,   "u-boot",       "U-Boot",               },
 120     {   IH_OS_VXWORKS,  "vxworks",      "VxWorks",              },
 121     {   -1,             "",             "",                     },
 122 };
 123
 124 table_entry_t type_name[] = {
 125     {   IH_TYPE_INVALID,    NULL,         "Invalid Image",      },
 126     {   IH_TYPE_FILESYSTEM, "filesystem", "Filesystem Image",   },
 127     {   IH_TYPE_FIRMWARE,   "firmware",   "Firmware",           },
 128     {   IH_TYPE_KERNEL,     "kernel",     "Kernel Image",       },
 129     {   IH_TYPE_MULTI,      "multi",      "Multi-File Image",   },
 130     {   IH_TYPE_RAMDISK,    "ramdisk",    "RAMDisk Image",      },
 131     {   IH_TYPE_SCRIPT,     "script",     "Script",             },
 132     {   IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
 133     {   IH_TYPE_FLATDT,     "flat_dt",    "Flat Device Tree",   },
 134     {   -1,                 "",           "",                   },
 135 };
 136
 137 table_entry_t comp_name[] = {
 138     {   IH_COMP_NONE,   "none",         "uncompressed",         },
 139     {   IH_COMP_BZIP2,  "bzip2",        "bzip2 compressed",     },
 140     {   IH_COMP_GZIP,   "gzip",         "gzip compressed",      },
 141     {   -1,             "",             "",                     },
 142 };
 143
 144 static  void    copy_file (int, const char *, int);
 145 static  void    usage   (void);
 146 static  void    print_header (image_header_t *);
 147 static  void    print_type (image_header_t *);
 148 static  char    *put_table_entry (table_entry_t *, char *, int);
 149 static  char    *put_arch (int);
 150 static  char    *put_type (int);
 151 static  char    *put_os   (int);
 152 static  char    *put_comp (int);
 153 static  int     get_table_entry (table_entry_t *, char *, char *);
 154 static  int     get_arch(char *);
 155 static  int     get_comp(char *);
 156 static  int     get_os  (char *);
 157 static  int     get_type(char *);
 158
 159
 160 char    *datafile;
 161 char    *imagefile;
 162
 163 int dflag    = 0;
 164 int eflag    = 0;
 165 int lflag    = 0;
 166 int vflag    = 0;
 167 int xflag    = 0;
 168 int opt_os   = IH_OS_LINUX;
 169 int opt_arch = IH_CPU_PPC;
 170 int opt_type = IH_TYPE_KERNEL;
 171 int opt_comp = IH_COMP_GZIP;
 172
 173 image_header_t header;
 174 image_header_t *hdr = &header;
 175
 176 int
 177 main (int argc, char **argv)
 178 {
 179         int ifd;
 180         uint32_t checksum;
 181         uint32_t addr;
 182         uint32_t ep;
 183         struct stat sbuf;
 184         unsigned char *ptr;
 185         char *name = "";
 186
 187         cmdname = *argv;
 188
 189         addr = ep = 0;
 190
 191         while (--argc > 0 && **++argv == '-') {
 192                 while (*++*argv) {
 193                         switch (**argv) {
 194                         case 'l':
 195                                 lflag = 1;
 196                                 break;
 197                         case 'A':
 198                                 if ((--argc <= 0) ||
 199                                     (opt_arch = get_arch(*++argv)) < 0)
 200                                         usage ();
 201                                 goto NXTARG;
 202                         case 'C':
 203                                 if ((--argc <= 0) ||
 204                                     (opt_comp = get_comp(*++argv)) < 0)
 205                                         usage ();
 206                                 goto NXTARG;
 207                         case 'O':
 208                                 if ((--argc <= 0) ||
 209                                     (opt_os = get_os(*++argv)) < 0)
 210                                         usage ();
 211                                 goto NXTARG;
 212                         case 'T':
 213                                 if ((--argc <= 0) ||
 214                                     (opt_type = get_type(*++argv)) < 0)
 215                                         usage ();
 216                                 goto NXTARG;
 217
 218                         case 'a':
 219                                 if (--argc <= 0)
 220                                         usage ();
 221                                 addr = strtoul (*++argv, (char **)&ptr, 16);
 222                                 if (*ptr) {
 223                                         fprintf (stderr,
 224                                                 "%s: invalid load address %s\n",
 225                                                 cmdname, *argv);
 226                                         exit (EXIT_FAILURE);
 227                                 }
 228                                 goto NXTARG;
 229                         case 'd':
 230                                 if (--argc <= 0)
 231                                         usage ();
 232                                 datafile = *++argv;
 233                                 dflag = 1;
 234                                 goto NXTARG;
 235                         case 'e':
 236                                 if (--argc <= 0)
 237                                         usage ();
 238                                 ep = strtoul (*++argv, (char **)&ptr, 16);
 239                                 if (*ptr) {
 240                                         fprintf (stderr,
 241                                                 "%s: invalid entry point %s\n",
 242                                                 cmdname, *argv);
 243                                         exit (EXIT_FAILURE);
 244                                 }
 245                                 eflag = 1;
 246                                 goto NXTARG;
 247                         case 'n':
 248                                 if (--argc <= 0)
 249                                         usage ();
 250                                 name = *++argv;
 251                                 goto NXTARG;
 252                         case 'v':
 253                                 vflag++;
 254                                 break;
 255                         case 'x':
 256                                 xflag++;
 257                                 break;
 258                         default:
 259                                 usage ();
 260                         }
 261                 }
 262 NXTARG:         ;
 263         }
 264
 265         if ((argc != 1) || ((lflag ^ dflag) == 0))
 266                 usage();
 267
 268         if (!eflag) {
 269                 ep = addr;
 270                 /* If XIP, entry point must be after the U-Boot header */
 271                 if (xflag)
 272                         ep += sizeof(image_header_t);
 273         }
 274
 275         /*
 276          * If XIP, ensure the entry point is equal to the load address plus
 277          * the size of the U-Boot header.
 278          */
 279         if (xflag) {
 280                 if (ep != addr + sizeof(image_header_t)) {
 281                         fprintf (stderr,
 282                                 "%s: For XIP, the entry point must be the load addr + %lu\n",
 283                                 cmdname,
 284                                 (unsigned long)sizeof(image_header_t));
 285                         exit (EXIT_FAILURE);
 286                 }
 287         }
 288
 289         imagefile = *argv;
 290
 291         if (lflag) {
 292                 ifd = open(imagefile, O_RDONLY|O_BINARY);
 293         } else {
 294                 ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
 295         }
 296
 297         if (ifd < 0) {
 298                 fprintf (stderr, "%s: Can't open %s: %s\n",
 299                         cmdname, imagefile, strerror(errno));
 300                 exit (EXIT_FAILURE);
 301         }
 302
 303         if (lflag) {
 304                 int len;
 305                 char *data;
 306                 /*
 307                  * list header information of existing image
 308                  */
 309                 if (fstat(ifd, &sbuf) < 0) {
 310                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 311                                 cmdname, imagefile, strerror(errno));
 312                         exit (EXIT_FAILURE);
 313                 }
 314
 315                 if ((unsigned)sbuf.st_size < sizeof(image_header_t)) {
 316                         fprintf (stderr,
 317                                 "%s: Bad size: \"%s\" is no valid image\n",
 318                                 cmdname, imagefile);
 319                         exit (EXIT_FAILURE);
 320                 }
 321
 322                 ptr = (unsigned char *)mmap(0, sbuf.st_size,
 323                                             PROT_READ, MAP_SHARED, ifd, 0);
 324                 if ((caddr_t)ptr == (caddr_t)-1) {
 325                         fprintf (stderr, "%s: Can't read %s: %s\n",
 326                                 cmdname, imagefile, strerror(errno));
 327                         exit (EXIT_FAILURE);
 328                 }
 329
 330                 /*
 331                  * create copy of header so that we can blank out the
 332                  * checksum field for checking - this can't be done
 333                  * on the PROT_READ mapped data.
 334                  */
 335                 memcpy (hdr, ptr, sizeof(image_header_t));
 336
 337                 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
 338                         fprintf (stderr,
 339                                 "%s: Bad Magic Number: \"%s\" is no valid image\n",
 340                                 cmdname, imagefile);
 341                         exit (EXIT_FAILURE);
 342                 }
 343
 344                 data = (char *)hdr;
 345                 len  = sizeof(image_header_t);
 346
 347                 checksum = ntohl(hdr->ih_hcrc);
 348                 hdr->ih_hcrc = htonl(0);        /* clear for re-calculation */
 349
 350                 if (crc32 (0, data, len) != checksum) {
 351                         fprintf (stderr,
 352                                 "%s: ERROR: \"%s\" has bad header checksum!\n",
 353                                 cmdname, imagefile);
 354                         exit (EXIT_FAILURE);
 355                 }
 356
 357                 data = (char *)(ptr + sizeof(image_header_t));
 358                 len  = sbuf.st_size - sizeof(image_header_t) ;
 359
 360                 if (crc32 (0, data, len) != ntohl(hdr->ih_dcrc)) {
 361                         fprintf (stderr,
 362                                 "%s: ERROR: \"%s\" has corrupted data!\n",
 363                                 cmdname, imagefile);
 364                         exit (EXIT_FAILURE);
 365                 }
 366
 367                 /* for multi-file images we need the data part, too */
 368                 print_header ((image_header_t *)ptr);
 369
 370                 (void) munmap((void *)ptr, sbuf.st_size);
 371                 (void) close (ifd);
 372
 373                 exit (EXIT_SUCCESS);
 374         }
 375
 376         /*
 377          * Must be -w then:
 378          *
 379          * write dummy header, to be fixed later
 380          */
 381         memset (hdr, 0, sizeof(image_header_t));
 382
 383         if (write(ifd, hdr, sizeof(image_header_t)) != sizeof(image_header_t)) {
 384                 fprintf (stderr, "%s: Write error on %s: %s\n",
 385                         cmdname, imagefile, strerror(errno));
 386                 exit (EXIT_FAILURE);
 387         }
 388
 389         if (opt_type == IH_TYPE_MULTI || opt_type == IH_TYPE_SCRIPT) {
 390                 char *file = datafile;
 391                 uint32_t size;
 392
 393                 for (;;) {
 394                         char *sep = NULL;
 395
 396                         if (file) {
 397                                 if ((sep = strchr(file, ':')) != NULL) {
 398                                         *sep = '\0';
 399                                 }
 400
 401                                 if (stat (file, &sbuf) < 0) {
 402                                         fprintf (stderr, "%s: Can't stat %s: %s\n",
 403                                                 cmdname, file, strerror(errno));
 404                                         exit (EXIT_FAILURE);
 405                                 }
 406                                 size = htonl(sbuf.st_size);
 407                         } else {
 408                                 size = 0;
 409                         }
 410
 411                         if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
 412                                 fprintf (stderr, "%s: Write error on %s: %s\n",
 413                                         cmdname, imagefile, strerror(errno));
 414                                 exit (EXIT_FAILURE);
 415                         }
 416
 417                         if (!file) {
 418                                 break;
 419                         }
 420
 421                         if (sep) {
 422                                 *sep = ':';
 423                                 file = sep + 1;
 424                         } else {
 425                                 file = NULL;
 426                         }
 427                 }
 428
 429                 file = datafile;
 430
 431                 for (;;) {
 432                         char *sep = strchr(file, ':');
 433                         if (sep) {
 434                                 *sep = '\0';
 435                                 copy_file (ifd, file, 1);
 436                                 *sep++ = ':';
 437                                 file = sep;
 438                         } else {
 439                                 copy_file (ifd, file, 0);
 440                                 break;
 441                         }
 442                 }
 443         } else {
 444                 copy_file (ifd, datafile, 0);
 445         }
 446
 447         /* We're a bit of paranoid */
 448 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__)
 449         (void) fdatasync (ifd);
 450 #else
 451         (void) fsync (ifd);
 452 #endif
 453
 454         if (fstat(ifd, &sbuf) < 0) {
 455                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 456                         cmdname, imagefile, strerror(errno));
 457                 exit (EXIT_FAILURE);
 458         }
 459
 460         ptr = (unsigned char *)mmap(0, sbuf.st_size,
 461                                     PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
 462         if (ptr == (unsigned char *)MAP_FAILED) {
 463                 fprintf (stderr, "%s: Can't map %s: %s\n",
 464                         cmdname, imagefile, strerror(errno));
 465                 exit (EXIT_FAILURE);
 466         }
 467
 468         hdr = (image_header_t *)ptr;
 469
 470         checksum = crc32 (0,
 471                           (const char *)(ptr + sizeof(image_header_t)),
 472                           sbuf.st_size - sizeof(image_header_t)
 473                          );
 474
 475         /* Build new header */
 476         hdr->ih_magic = htonl(IH_MAGIC);
 477         hdr->ih_time  = htonl(sbuf.st_mtime);
 478         hdr->ih_size  = htonl(sbuf.st_size - sizeof(image_header_t));
 479         hdr->ih_load  = htonl(addr);
 480         hdr->ih_ep    = htonl(ep);
 481         hdr->ih_dcrc  = htonl(checksum);
 482         hdr->ih_os    = opt_os;
 483         hdr->ih_arch  = opt_arch;
 484         hdr->ih_type  = opt_type;
 485         hdr->ih_comp  = opt_comp;
 486
 487         strncpy((char *)hdr->ih_name, name, IH_NMLEN);
 488
 489         checksum = crc32(0,(const char *)hdr,sizeof(image_header_t));
 490
 491         hdr->ih_hcrc = htonl(checksum);
 492
 493         print_header (hdr);
 494
 495         (void) munmap((void *)ptr, sbuf.st_size);
 496
 497         /* We're a bit of paranoid */
 498 #if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__)
 499         (void) fdatasync (ifd);
 500 #else
 501         (void) fsync (ifd);
 502 #endif
 503
 504         if (close(ifd)) {
 505                 fprintf (stderr, "%s: Write error on %s: %s\n",
 506                         cmdname, imagefile, strerror(errno));
 507                 exit (EXIT_FAILURE);
 508         }
 509
 510         exit (EXIT_SUCCESS);
 511 }
 512
 513 static void
 514 copy_file (int ifd, const char *datafile, int pad)
 515 {
 516         int dfd;
 517         struct stat sbuf;
 518         unsigned char *ptr;
 519         int tail;
 520         int zero = 0;
 521         int offset = 0;
 522         int size;
 523
 524         if (vflag) {
 525                 fprintf (stderr, "Adding Image %s\n", datafile);
 526         }
 527
 528         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
 529                 fprintf (stderr, "%s: Can't open %s: %s\n",
 530                         cmdname, datafile, strerror(errno));
 531                 exit (EXIT_FAILURE);
 532         }
 533
 534         if (fstat(dfd, &sbuf) < 0) {
 535                 fprintf (stderr, "%s: Can't stat %s: %s\n",
 536                         cmdname, datafile, strerror(errno));
 537                 exit (EXIT_FAILURE);
 538         }
 539
 540         ptr = (unsigned char *)mmap(0, sbuf.st_size,
 541                                     PROT_READ, MAP_SHARED, dfd, 0);
 542         if (ptr == (unsigned char *)MAP_FAILED) {
 543                 fprintf (stderr, "%s: Can't read %s: %s\n",
 544                         cmdname, datafile, strerror(errno));
 545                 exit (EXIT_FAILURE);
 546         }
 547
 548         if (xflag) {
 549                 unsigned char *p = NULL;
 550                 /*
 551                  * XIP: do not append the image_header_t at the
 552                  * beginning of the file, but consume the space
 553                  * reserved for it.
 554                  */
 555
 556                 if ((unsigned)sbuf.st_size < sizeof(image_header_t)) {
 557                         fprintf (stderr,
 558                                 "%s: Bad size: \"%s\" is too small for XIP\n",
 559                                 cmdname, datafile);
 560                         exit (EXIT_FAILURE);
 561                 }
 562
 563                 for (p=ptr; p < ptr+sizeof(image_header_t); p++) {
 564                         if ( *p != 0xff ) {
 565                                 fprintf (stderr,
 566                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
 567                                         cmdname, datafile);
 568                                 exit (EXIT_FAILURE);
 569                         }
 570                 }
 571
 572                 offset = sizeof(image_header_t);
 573         }
 574
 575         size = sbuf.st_size - offset;
 576         if (write(ifd, ptr + offset, size) != size) {
 577                 fprintf (stderr, "%s: Write error on %s: %s\n",
 578                         cmdname, imagefile, strerror(errno));
 579                 exit (EXIT_FAILURE);
 580         }
 581
 582         if (pad && ((tail = size % 4) != 0)) {
 583
 584                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
 585                         fprintf (stderr, "%s: Write error on %s: %s\n",
 586                                 cmdname, imagefile, strerror(errno));
 587                         exit (EXIT_FAILURE);
 588                 }
 589         }
 590
 591         (void) munmap((void *)ptr, sbuf.st_size);
 592         (void) close (dfd);
 593 }
 594
 595 void
 596 usage ()
 597 {
 598         fprintf (stderr, "Usage: %s -l image\n"
 599                          "          -l ==> list image header information\n"
 600                          "       %s [-x] -A arch -O os -T type -C comp "
 601                          "-a addr -e ep -n name -d data_file[:data_file...] image\n",
 602                 cmdname, cmdname);
 603         fprintf (stderr, "          -A ==> set architecture to 'arch'\n"
 604                          "          -O ==> set operating system to 'os'\n"
 605                          "          -T ==> set image type to 'type'\n"
 606                          "          -C ==> set compression type 'comp'\n"
 607                          "          -a ==> set load address to 'addr' (hex)\n"
 608                          "          -e ==> set entry point to 'ep' (hex)\n"
 609                          "          -n ==> set image name to 'name'\n"
 610                          "          -d ==> use image data from 'datafile'\n"
 611                          "          -x ==> set XIP (execute in place)\n"
 612                 );
 613         exit (EXIT_FAILURE);
 614 }
 615
 616 static void
 617 print_header (image_header_t *hdr)
 618 {
 619         time_t timestamp;
 620         uint32_t size;
 621
 622         timestamp = (time_t)ntohl(hdr->ih_time);
 623         size = ntohl(hdr->ih_size);
 624
 625         printf ("Image Name:   %.*s\n", IH_NMLEN, hdr->ih_name);
 626         printf ("Created:      %s", ctime(&timestamp));
 627         printf ("Image Type:   "); print_type(hdr);
 628         printf ("Data Size:    %d Bytes = %.2f kB = %.2f MB\n",
 629                 size, (double)size / 1.024e3, (double)size / 1.048576e6 );
 630         printf ("Load Address: 0x%08X\n", ntohl(hdr->ih_load));
 631         printf ("Entry Point:  0x%08X\n", ntohl(hdr->ih_ep));
 632
 633         if (hdr->ih_type == IH_TYPE_MULTI || hdr->ih_type == IH_TYPE_SCRIPT) {
 634                 int i, ptrs;
 635                 uint32_t pos;
 636                 unsigned long *len_ptr = (unsigned long *) (
 637                                         (unsigned long)hdr + sizeof(image_header_t)
 638                                 );
 639
 640                 /* determine number of images first (to calculate image offsets) */
 641                 for (i=0; len_ptr[i]; ++i)      /* null pointer terminates list */
 642                         ;
 643                 ptrs = i;               /* null pointer terminates list */
 644
 645                 pos = sizeof(image_header_t) + ptrs * sizeof(long);
 646                 printf ("Contents:\n");
 647                 for (i=0; len_ptr[i]; ++i) {
 648                         size = ntohl(len_ptr[i]);
 649
 650                         printf ("   Image %d: %8d Bytes = %4d kB = %d MB\n",
 651                                 i, size, size>>10, size>>20);
 652                         if (hdr->ih_type == IH_TYPE_SCRIPT && i > 0) {
 653                                 /*
 654                                  * the user may need to know offsets
 655                                  * if planning to do something with
 656                                  * multiple files
 657                                  */
 658                                 printf ("    Offset = %08X\n", pos);
 659                         }
 660                         /* copy_file() will pad the first files to even word align */
 661                         size += 3;
 662                         size &= ~3;
 663                         pos += size;
 664                 }
 665         }
 666 }
 667
 668
 669 static void
 670 print_type (image_header_t *hdr)
 671 {
 672         printf ("%s %s %s (%s)\n",
 673                 put_arch (hdr->ih_arch),
 674                 put_os   (hdr->ih_os  ),
 675                 put_type (hdr->ih_type),
 676                 put_comp (hdr->ih_comp)
 677         );
 678 }
 679
 680 static char *put_arch (int arch)
 681 {
 682         return (put_table_entry(arch_name, "Unknown Architecture", arch));
 683 }
 684
 685 static char *put_os (int os)
 686 {
 687         return (put_table_entry(os_name, "Unknown OS", os));
 688 }
 689
 690 static char *put_type (int type)
 691 {
 692         return (put_table_entry(type_name, "Unknown Image", type));
 693 }
 694
 695 static char *put_comp (int comp)
 696 {
 697         return (put_table_entry(comp_name, "Unknown Compression", comp));
 698 }
 699
 700 static char *put_table_entry (table_entry_t *table, char *msg, int type)
 701 {
 702         for (; table->val>=0; ++table) {
 703                 if (table->val == type)
 704                         return (table->lname);
 705         }
 706         return (msg);
 707 }
 708
 709 static int get_arch(char *name)
 710 {
 711         return (get_table_entry(arch_name, "CPU", name));
 712 }
 713
 714
 715 static int get_comp(char *name)
 716 {
 717         return (get_table_entry(comp_name, "Compression", name));
 718 }
 719
 720
 721 static int get_os (char *name)
 722 {
 723         return (get_table_entry(os_name, "OS", name));
 724 }
 725
 726
 727 static int get_type(char *name)
 728 {
 729         return (get_table_entry(type_name, "Image", name));
 730 }
 731
 732 static int get_table_entry (table_entry_t *table, char *msg, char *name)
 733 {
 734         table_entry_t *t;
 735         int first = 1;
 736
 737         for (t=table; t->val>=0; ++t) {
 738                 if (t->sname && strcasecmp(t->sname, name)==0)
 739                         return (t->val);
 740         }
 741         fprintf (stderr, "\nInvalid %s Type - valid names are", msg);
 742         for (t=table; t->val>=0; ++t) {
 743                 if (t->sname == NULL)
 744                         continue;
 745                 fprintf (stderr, "%c %s", (first) ? ':' : ',', t->sname);
 746                 first = 0;
 747         }
 748         fprintf (stderr, "\n");
 749         return (-1);
 750 }