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  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11
  12 /*
  13  * Multi Image extract
  14  */
  15 #include <common.h>
  16 #include <command.h>
  17 #include <image.h>
  18 #include <watchdog.h>
  19 #if defined(CONFIG_BZIP2)
  20 #include <bzlib.h>
  21 #endif
  22 #include <asm/byteorder.h>
  23 #include <asm/io.h>
  24
  25 #ifndef CONFIG_SYS_XIMG_LEN
  26 /* use 8MByte as default max gunzip size */
  27 #define CONFIG_SYS_XIMG_LEN     0x800000
  28 #endif
  29
  30 static int
  31 do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
  32 {
  33         ulong           addr = load_addr;
  34         ulong           dest = 0;
  35         ulong           data, len, count;
  36         int             verify;
  37         int             part = 0;
  38         image_header_t  *hdr = NULL;
  39 #if defined(CONFIG_FIT)
  40         const char      *uname = NULL;
  41         const void*     fit_hdr;
  42         int             noffset;
  43         const void      *fit_data;
  44         size_t          fit_len;
  45 #endif
  46 #ifdef CONFIG_GZIP
  47         uint            unc_len = CONFIG_SYS_XIMG_LEN;
  48 #endif
  49         uint8_t         comp;
  50
  51         verify = getenv_yesno("verify");
  52
  53         if (argc > 1) {
  54                 addr = simple_strtoul(argv[1], NULL, 16);
  55         }
  56         if (argc > 2) {
  57                 part = simple_strtoul(argv[2], NULL, 16);
  58 #if defined(CONFIG_FIT)
  59                 uname = argv[2];
  60 #endif
  61         }
  62         if (argc > 3) {
  63                 dest = simple_strtoul(argv[3], NULL, 16);
  64         }
  65
  66         switch (genimg_get_format((void *)addr)) {
  67         case IMAGE_FORMAT_LEGACY:
  68
  69                 printf("## Copying part %d from legacy image "
  70                         "at %08lx ...\n", part, addr);
  71
  72                 hdr = (image_header_t *)addr;
  73                 if (!image_check_magic(hdr)) {
  74                         printf("Bad Magic Number\n");
  75                         return 1;
  76                 }
  77
  78                 if (!image_check_hcrc(hdr)) {
  79                         printf("Bad Header Checksum\n");
  80                         return 1;
  81                 }
  82 #ifdef DEBUG
  83                 image_print_contents(hdr);
  84 #endif
  85
  86                 if (!image_check_type(hdr, IH_TYPE_MULTI)) {
  87                         printf("Wrong Image Type for %s command\n",
  88                                         cmdtp->name);
  89                         return 1;
  90                 }
  91
  92                 comp = image_get_comp(hdr);
  93                 if ((comp != IH_COMP_NONE) && (argc < 4)) {
  94                         printf("Must specify load address for %s command "
  95                                         "with compressed image\n",
  96                                         cmdtp->name);
  97                         return 1;
  98                 }
  99
 100                 if (verify) {
 101                         printf("   Verifying Checksum ... ");
 102                         if (!image_check_dcrc(hdr)) {
 103                                 printf("Bad Data CRC\n");
 104                                 return 1;
 105                         }
 106                         printf("OK\n");
 107                 }
 108
 109                 count = image_multi_count(hdr);
 110                 if (part >= count) {
 111                         printf("Bad Image Part\n");
 112                         return 1;
 113                 }
 114
 115                 image_multi_getimg(hdr, part, &data, &len);
 116                 break;
 117 #if defined(CONFIG_FIT)
 118         case IMAGE_FORMAT_FIT:
 119                 if (uname == NULL) {
 120                         puts("No FIT subimage unit name\n");
 121                         return 1;
 122                 }
 123
 124                 printf("## Copying '%s' subimage from FIT image "
 125                         "at %08lx ...\n", uname, addr);
 126
 127                 fit_hdr = (const void *)addr;
 128                 if (!fit_check_format(fit_hdr)) {
 129                         puts("Bad FIT image format\n");
 130                         return 1;
 131                 }
 132
 133                 /* get subimage node offset */
 134                 noffset = fit_image_get_node(fit_hdr, uname);
 135                 if (noffset < 0) {
 136                         printf("Can't find '%s' FIT subimage\n", uname);
 137                         return 1;
 138                 }
 139
 140                 if (fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
 141                     && (argc < 4)) {
 142                         printf("Must specify load address for %s command "
 143                                 "with compressed image\n",
 144                                 cmdtp->name);
 145                         return 1;
 146                 }
 147
 148                 /* verify integrity */
 149                 if (verify) {
 150                         if (!fit_image_verify(fit_hdr, noffset)) {
 151                                 puts("Bad Data Hash\n");
 152                                 return 1;
 153                         }
 154                 }
 155
 156                 /* get subimage data address and length */
 157                 if (fit_image_get_data(fit_hdr, noffset,
 158                                         &fit_data, &fit_len)) {
 159                         puts("Could not find script subimage data\n");
 160                         return 1;
 161                 }
 162
 163                 if (fit_image_get_comp(fit_hdr, noffset, &comp)) {
 164                         puts("Could not find script subimage "
 165                                 "compression type\n");
 166                         return 1;
 167                 }
 168
 169                 data = (ulong)fit_data;
 170                 len = (ulong)fit_len;
 171                 break;
 172 #endif
 173         default:
 174                 puts("Invalid image type for imxtract\n");
 175                 return 1;
 176         }
 177
 178         if (argc > 3) {
 179                 switch (comp) {
 180                 case IH_COMP_NONE:
 181 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
 182                         {
 183                                 size_t l = len;
 184                                 size_t tail;
 185                                 void *to = (void *) dest;
 186                                 void *from = (void *)data;
 187
 188                                 printf("   Loading part %d ... ", part);
 189
 190                                 while (l > 0) {
 191                                         tail = (l > CHUNKSZ) ? CHUNKSZ : l;
 192                                         WATCHDOG_RESET();
 193                                         memmove(to, from, tail);
 194                                         to += tail;
 195                                         from += tail;
 196                                         l -= tail;
 197                                 }
 198                         }
 199 #else   /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
 200                         printf("   Loading part %d ... ", part);
 201                         memmove((char *) dest, (char *)data, len);
 202 #endif  /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
 203                         break;
 204 #ifdef CONFIG_GZIP
 205                 case IH_COMP_GZIP:
 206                         printf("   Uncompressing part %d ... ", part);
 207                         if (gunzip((void *) dest, unc_len,
 208                                    (uchar *) data, &len) != 0) {
 209                                 puts("GUNZIP ERROR - image not loaded\n");
 210                                 return 1;
 211                         }
 212                         break;
 213 #endif
 214 #if defined(CONFIG_BZIP2)
 215                 case IH_COMP_BZIP2:
 216                         {
 217                                 int i;
 218
 219                                 printf("   Uncompressing part %d ... ", part);
 220                                 /*
 221                                  * If we've got less than 4 MB of malloc()
 222                                  * space, use slower decompression algorithm
 223                                  * which requires at most 2300 KB of memory.
 224                                  */
 225                                 i = BZ2_bzBuffToBuffDecompress(
 226                                         map_sysmem(ntohl(hdr->ih_load), 0),
 227                                         &unc_len, (char *)data, len,
 228                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
 229                                         0);
 230                                 if (i != BZ_OK) {
 231                                         printf("BUNZIP2 ERROR %d - "
 232                                                 "image not loaded\n", i);
 233                                         return 1;
 234                                 }
 235                         }
 236                         break;
 237 #endif /* CONFIG_BZIP2 */
 238                 default:
 239                         printf("Unimplemented compression type %d\n", comp);
 240                         return 1;
 241                 }
 242                 puts("OK\n");
 243         }
 244
 245         setenv_hex("fileaddr", data);
 246         setenv_hex("filesize", len);
 247
 248         return 0;
 249 }
 250
 251 #ifdef CONFIG_SYS_LONGHELP
 252 static char imgextract_help_text[] =
 253         "addr part [dest]\n"
 254         "    - extract <part> from legacy image at <addr> and copy to <dest>"
 255 #if defined(CONFIG_FIT)
 256         "\n"
 257         "addr uname [dest]\n"
 258         "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
 259 #endif
 260         "";
 261 #endif
 262
 263 U_BOOT_CMD(
 264         imxtract, 4, 1, do_imgextract,
 265         "extract a part of a multi-image", imgextract_help_text
 266 );