common/cmd_ximg.c

   1 /*
   2  * (C) Copyright 2000-2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2003
   6  * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27
  28 /*
  29  * Multi Image extract
  30  */
  31 #include <common.h>
  32 #include <command.h>
  33 #include <image.h>
  34 #include <watchdog.h>
  35 #if defined(CONFIG_BZIP2)
  36 #include <bzlib.h>
  37 #endif
  38 #include <asm/byteorder.h>
  39
  40 #ifndef CONFIG_SYS_XIMG_LEN
  41 /* use 8MByte as default max gunzip size */
  42 #define CONFIG_SYS_XIMG_LEN     0x800000
  43 #endif
  44
  45 static int
  46 do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
  47 {
  48         ulong           addr = load_addr;
  49         ulong           dest = 0;
  50         ulong           data, len, count;
  51         int             verify;
  52         int             part = 0;
  53         image_header_t  *hdr;
  54 #if defined(CONFIG_FIT)
  55         const char      *uname = NULL;
  56         const void*     fit_hdr;
  57         int             noffset;
  58         const void      *fit_data;
  59         size_t          fit_len;
  60 #endif
  61         uint            unc_len = CONFIG_SYS_XIMG_LEN;
  62         uint8_t         comp;
  63
  64         verify = getenv_yesno("verify");
  65
  66         if (argc > 1) {
  67                 addr = simple_strtoul(argv[1], NULL, 16);
  68         }
  69         if (argc > 2) {
  70                 part = simple_strtoul(argv[2], NULL, 16);
  71 #if defined(CONFIG_FIT)
  72                 uname = argv[2];
  73 #endif
  74         }
  75         if (argc > 3) {
  76                 dest = simple_strtoul(argv[3], NULL, 16);
  77         }
  78
  79         switch (genimg_get_format((void *)addr)) {
  80         case IMAGE_FORMAT_LEGACY:
  81
  82                 printf("## Copying part %d from legacy image "
  83                         "at %08lx ...\n", part, addr);
  84
  85                 hdr = (image_header_t *)addr;
  86                 if (!image_check_magic(hdr)) {
  87                         printf("Bad Magic Number\n");
  88                         return 1;
  89                 }
  90
  91                 if (!image_check_hcrc(hdr)) {
  92                         printf("Bad Header Checksum\n");
  93                         return 1;
  94                 }
  95 #ifdef DEBUG
  96                 image_print_contents(hdr);
  97 #endif
  98
  99                 if (!image_check_type(hdr, IH_TYPE_MULTI)) {
 100                         printf("Wrong Image Type for %s command\n",
 101                                         cmdtp->name);
 102                         return 1;
 103                 }
 104
 105                 comp = image_get_comp(hdr);
 106                 if ((comp != IH_COMP_NONE) && (argc < 4)) {
 107                         printf("Must specify load address for %s command "
 108                                         "with compressed image\n",
 109                                         cmdtp->name);
 110                         return 1;
 111                 }
 112
 113                 if (verify) {
 114                         printf("   Verifying Checksum ... ");
 115                         if (!image_check_dcrc(hdr)) {
 116                                 printf("Bad Data CRC\n");
 117                                 return 1;
 118                         }
 119                         printf("OK\n");
 120                 }
 121
 122                 count = image_multi_count(hdr);
 123                 if (part >= count) {
 124                         printf("Bad Image Part\n");
 125                         return 1;
 126                 }
 127
 128                 image_multi_getimg(hdr, part, &data, &len);
 129                 break;
 130 #if defined(CONFIG_FIT)
 131         case IMAGE_FORMAT_FIT:
 132                 if (uname == NULL) {
 133                         puts("No FIT subimage unit name\n");
 134                         return 1;
 135                 }
 136
 137                 printf("## Copying '%s' subimage from FIT image "
 138                         "at %08lx ...\n", uname, addr);
 139
 140                 fit_hdr = (const void *)addr;
 141                 if (!fit_check_format(fit_hdr)) {
 142                         puts("Bad FIT image format\n");
 143                         return 1;
 144                 }
 145
 146                 /* get subimage node offset */
 147                 noffset = fit_image_get_node(fit_hdr, uname);
 148                 if (noffset < 0) {
 149                         printf("Can't find '%s' FIT subimage\n", uname);
 150                         return 1;
 151                 }
 152
 153                 if (fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
 154                     && (argc < 4)) {
 155                         printf("Must specify load address for %s command "
 156                                 "with compressed image\n",
 157                                 cmdtp->name);
 158                         return 1;
 159                 }
 160
 161                 /* verify integrity */
 162                 if (verify) {
 163                         if (!fit_image_check_hashes(fit_hdr, noffset)) {
 164                                 puts("Bad Data Hash\n");
 165                                 return 1;
 166                         }
 167                 }
 168
 169                 /* get subimage data address and length */
 170                 if (fit_image_get_data(fit_hdr, noffset,
 171                                         &fit_data, &fit_len)) {
 172                         puts("Could not find script subimage data\n");
 173                         return 1;
 174                 }
 175
 176                 if (fit_image_get_comp(fit_hdr, noffset, &comp)) {
 177                         puts("Could not find script subimage "
 178                                 "compression type\n");
 179                         return 1;
 180                 }
 181
 182                 data = (ulong)fit_data;
 183                 len = (ulong)fit_len;
 184                 break;
 185 #endif
 186         default:
 187                 puts("Invalid image type for imxtract\n");
 188                 return 1;
 189         }
 190
 191         if (argc > 3) {
 192                 switch (comp) {
 193                 case IH_COMP_NONE:
 194 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
 195                         {
 196                                 size_t l = len;
 197                                 size_t tail;
 198                                 void *to = (void *) dest;
 199                                 void *from = (void *)data;
 200
 201                                 printf("   Loading part %d ... ", part);
 202
 203                                 while (l > 0) {
 204                                         tail = (l > CHUNKSZ) ? CHUNKSZ : l;
 205                                         WATCHDOG_RESET();
 206                                         memmove(to, from, tail);
 207                                         to += tail;
 208                                         from += tail;
 209                                         l -= tail;
 210                                 }
 211                         }
 212 #else   /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
 213                         printf("   Loading part %d ... ", part);
 214                         memmove((char *) dest, (char *)data, len);
 215 #endif  /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
 216                         break;
 217 #ifdef CONFIG_GZIP
 218                 case IH_COMP_GZIP:
 219                         printf("   Uncompressing part %d ... ", part);
 220                         if (gunzip((void *) dest, unc_len,
 221                                    (uchar *) data, &len) != 0) {
 222                                 puts("GUNZIP ERROR - image not loaded\n");
 223                                 return 1;
 224                         }
 225                         break;
 226 #endif
 227 #if defined(CONFIG_BZIP2)
 228                 case IH_COMP_BZIP2:
 229                         {
 230                                 int i;
 231
 232                                 printf("   Uncompressing part %d ... ", part);
 233                                 /*
 234                                  * If we've got less than 4 MB of malloc()
 235                                  * space, use slower decompression algorithm
 236                                  * which requires at most 2300 KB of memory.
 237                                  */
 238                                 i = BZ2_bzBuffToBuffDecompress(
 239                                         (char *)ntohl(hdr->ih_load),
 240                                         &unc_len, (char *)data, len,
 241                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
 242                                         0);
 243                                 if (i != BZ_OK) {
 244                                         printf("BUNZIP2 ERROR %d - "
 245                                                 "image not loaded\n", i);
 246                                         return 1;
 247                                 }
 248                         }
 249                         break;
 250 #endif /* CONFIG_BZIP2 */
 251                 default:
 252                         printf("Unimplemented compression type %d\n", comp);
 253                         return 1;
 254                 }
 255                 puts("OK\n");
 256         }
 257
 258         setenv_hex("fileaddr", data);
 259         setenv_hex("filesize", len);
 260
 261         return 0;
 262 }
 263
 264 #ifdef CONFIG_SYS_LONGHELP
 265 static char imgextract_help_text[] =
 266         "addr part [dest]\n"
 267         "    - extract <part> from legacy image at <addr> and copy to <dest>"
 268 #if defined(CONFIG_FIT)
 269         "\n"
 270         "addr uname [dest]\n"
 271         "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
 272 #endif
 273         "";
 274 #endif
 275
 276 U_BOOT_CMD(
 277         imxtract, 4, 1, do_imgextract,
 278         "extract a part of a multi-image", imgextract_help_text
 279 );