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 <asm/byteorder.h>
  35
  36 int
  37 do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
  38 {
  39         ulong           addr = load_addr;
  40         ulong           dest = 0;
  41         ulong           data, len, count;
  42         int             verify;
  43         int             part = 0;
  44         char            pbuf[10];
  45         image_header_t  *hdr;
  46 #if defined(CONFIG_FIT)
  47         const char      *uname = NULL;
  48         const void*     fit_hdr;
  49         int             noffset;
  50         const void      *fit_data;
  51         size_t          fit_len;
  52 #endif
  53
  54         verify = getenv_verify ();
  55
  56         if (argc > 1) {
  57                 addr = simple_strtoul(argv[1], NULL, 16);
  58         }
  59         if (argc > 2) {
  60                 part = simple_strtoul(argv[2], NULL, 16);
  61 #if defined(CONFIG_FIT)
  62                 uname = argv[2];
  63 #endif
  64         }
  65         if (argc > 3) {
  66                 dest = simple_strtoul(argv[3], NULL, 16);
  67         }
  68
  69         switch (genimg_get_format ((void *)addr)) {
  70         case IMAGE_FORMAT_LEGACY:
  71
  72                 printf("## Copying part %d from legacy image "
  73                         "at %08lx ...\n", part, addr);
  74
  75                 hdr = (image_header_t *)addr;
  76                 if (!image_check_magic (hdr)) {
  77                         printf("Bad Magic Number\n");
  78                         return 1;
  79                 }
  80
  81                 if (!image_check_hcrc (hdr)) {
  82                         printf("Bad Header Checksum\n");
  83                         return 1;
  84                 }
  85 #ifdef DEBUG
  86                 image_print_contents (hdr);
  87 #endif
  88
  89                 if (!image_check_type (hdr, IH_TYPE_MULTI)) {
  90                         printf("Wrong Image Type for %s command\n",
  91                                         cmdtp->name);
  92                         return 1;
  93                 }
  94
  95                 if (image_get_comp (hdr) != IH_COMP_NONE) {
  96                         printf("Wrong Compression Type for %s command\n",
  97                                         cmdtp->name);
  98                         return 1;
  99                 }
 100
 101                 if (verify) {
 102                         printf("   Verifying Checksum ... ");
 103                         if (!image_check_dcrc (hdr)) {
 104                                 printf("Bad Data CRC\n");
 105                                 return 1;
 106                         }
 107                         printf("OK\n");
 108                 }
 109
 110                 count = image_multi_count (hdr);
 111                 if (part >= count) {
 112                         printf("Bad Image Part\n");
 113                         return 1;
 114                 }
 115
 116                 image_multi_getimg (hdr, part, &data, &len);
 117                 break;
 118 #if defined(CONFIG_FIT)
 119         case IMAGE_FORMAT_FIT:
 120                 if (uname == NULL) {
 121                         puts ("No FIT subimage unit name\n");
 122                         return 1;
 123                 }
 124
 125                 printf("## Copying '%s' subimage from FIT image "
 126                         "at %08lx ...\n", uname, addr);
 127
 128                 fit_hdr = (const void *)addr;
 129                 if (!fit_check_format (fit_hdr)) {
 130                         puts ("Bad FIT image format\n");
 131                         return 1;
 132                 }
 133
 134                 /* get subimage node offset */
 135                 noffset = fit_image_get_node (fit_hdr, uname);
 136                 if (noffset < 0) {
 137                         printf ("Can't find '%s' FIT subimage\n", uname);
 138                         return 1;
 139                 }
 140
 141                 if (fit_image_check_comp (fit_hdr, noffset, IH_COMP_NONE)) {
 142                         printf("Wrong Compression Type for %s command\n",
 143                                         cmdtp->name);
 144                         return 1;
 145                 }
 146
 147                 /* verify integrity */
 148                 if (verify) {
 149                         if (!fit_image_check_hashes (fit_hdr, noffset)) {
 150                                 puts ("Bad Data Hash\n");
 151                                 return 1;
 152                         }
 153                 }
 154
 155                 /* get subimage data address and length */
 156                 if (fit_image_get_data (fit_hdr, noffset, &fit_data, &fit_len)) {
 157                         puts ("Could not find script subimage data\n");
 158                         return 1;
 159                 }
 160
 161                 data = (ulong)fit_data;
 162                 len = (ulong)fit_len;
 163                 break;
 164 #endif
 165         default:
 166                 puts ("Invalid image type for imxtract\n");
 167                 return 1;
 168         }
 169
 170         if (argc > 3) {
 171                 memcpy((char *) dest, (char *) data, len);
 172         }
 173
 174         sprintf(pbuf, "%8lx", data);
 175         setenv("fileaddr", pbuf);
 176         sprintf(pbuf, "%8lx", len);
 177         setenv("filesize", pbuf);
 178
 179         return 0;
 180 }
 181
 182 U_BOOT_CMD(imxtract, 4, 1, do_imgextract,
 183            "imxtract- extract a part of a multi-image\n",
 184            "addr part [dest]\n"
 185            "    - extract <part> from legacy image at <addr> and copy to <dest>\n"
 186 #if defined(CONFIG_FIT)
 187            "addr uname [dest]\n"
 188            "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>\n"
 189 #endif
 190 );