cmd/ximg.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2004
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  *
   6  * (C) Copyright 2003
   7  * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
   8  */
   9
  10
  11 /*
  12  * Multi Image extract
  13  */
  14 #include <common.h>
  15 #include <command.h>
  16 #include <image.h>
  17 #include <mapmem.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;
  36         int             verify;
  37         int             part = 0;
  38 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
  39         ulong           count;
  40         image_header_t  *hdr = NULL;
  41 #endif
  42 #if defined(CONFIG_FIT)
  43         const char      *uname = NULL;
  44         const void*     fit_hdr;
  45         int             noffset;
  46         const void      *fit_data;
  47         size_t          fit_len;
  48 #endif
  49 #ifdef CONFIG_GZIP
  50         uint            unc_len = CONFIG_SYS_XIMG_LEN;
  51 #endif
  52         uint8_t         comp;
  53
  54         verify = env_get_yesno("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 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
  71         case IMAGE_FORMAT_LEGACY:
  72
  73                 printf("## Copying part %d from legacy image "
  74                         "at %08lx ...\n", part, addr);
  75
  76                 hdr = (image_header_t *)addr;
  77                 if (!image_check_magic(hdr)) {
  78                         printf("Bad Magic Number\n");
  79                         return 1;
  80                 }
  81
  82                 if (!image_check_hcrc(hdr)) {
  83                         printf("Bad Header Checksum\n");
  84                         return 1;
  85                 }
  86 #ifdef DEBUG
  87                 image_print_contents(hdr);
  88 #endif
  89
  90                 if (!image_check_type(hdr, IH_TYPE_MULTI) &&
  91                     !image_check_type(hdr, IH_TYPE_SCRIPT)) {
  92                         printf("Wrong Image Type for %s command\n",
  93                                         cmdtp->name);
  94                         return 1;
  95                 }
  96
  97                 comp = image_get_comp(hdr);
  98                 if ((comp != IH_COMP_NONE) && (argc < 4)) {
  99                         printf("Must specify load address for %s command "
 100                                         "with compressed image\n",
 101                                         cmdtp->name);
 102                         return 1;
 103                 }
 104
 105                 if (verify) {
 106                         printf("   Verifying Checksum ... ");
 107                         if (!image_check_dcrc(hdr)) {
 108                                 printf("Bad Data CRC\n");
 109                                 return 1;
 110                         }
 111                         printf("OK\n");
 112                 }
 113
 114                 count = image_multi_count(hdr);
 115                 if (part >= count) {
 116                         printf("Bad Image Part\n");
 117                         return 1;
 118                 }
 119
 120                 image_multi_getimg(hdr, part, &data, &len);
 121                 break;
 122 #endif
 123 #if defined(CONFIG_FIT)
 124         case IMAGE_FORMAT_FIT:
 125                 if (uname == NULL) {
 126                         puts("No FIT subimage unit name\n");
 127                         return 1;
 128                 }
 129
 130                 printf("## Copying '%s' subimage from FIT image "
 131                         "at %08lx ...\n", uname, addr);
 132
 133                 fit_hdr = (const void *)addr;
 134                 if (!fit_check_format(fit_hdr)) {
 135                         puts("Bad FIT image format\n");
 136                         return 1;
 137                 }
 138
 139                 /* get subimage node offset */
 140                 noffset = fit_image_get_node(fit_hdr, uname);
 141                 if (noffset < 0) {
 142                         printf("Can't find '%s' FIT subimage\n", uname);
 143                         return 1;
 144                 }
 145
 146                 if (!fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
 147                     && (argc < 4)) {
 148                         printf("Must specify load address for %s command "
 149                                 "with compressed image\n",
 150                                 cmdtp->name);
 151                         return 1;
 152                 }
 153
 154                 /* verify integrity */
 155                 if (verify) {
 156                         if (!fit_image_verify(fit_hdr, noffset)) {
 157                                 puts("Bad Data Hash\n");
 158                                 return 1;
 159                         }
 160                 }
 161
 162                 /* get subimage data address and length */
 163                 if (fit_image_get_data(fit_hdr, noffset,
 164                                         &fit_data, &fit_len)) {
 165                         puts("Could not find script subimage data\n");
 166                         return 1;
 167                 }
 168
 169                 if (fit_image_get_comp(fit_hdr, noffset, &comp)) {
 170                         puts("Could not find script subimage "
 171                                 "compression type\n");
 172                         return 1;
 173                 }
 174
 175                 data = (ulong)fit_data;
 176                 len = (ulong)fit_len;
 177                 break;
 178 #endif
 179         default:
 180                 puts("Invalid image type for imxtract\n");
 181                 return 1;
 182         }
 183
 184         if (argc > 3) {
 185                 switch (comp) {
 186                 case IH_COMP_NONE:
 187 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
 188                         {
 189                                 size_t l = len;
 190                                 size_t tail;
 191                                 void *to = (void *) dest;
 192                                 void *from = (void *)data;
 193
 194                                 printf("   Loading part %d ... ", part);
 195
 196                                 while (l > 0) {
 197                                         tail = (l > CHUNKSZ) ? CHUNKSZ : l;
 198                                         WATCHDOG_RESET();
 199                                         memmove(to, from, tail);
 200                                         to += tail;
 201                                         from += tail;
 202                                         l -= tail;
 203                                 }
 204                         }
 205 #else   /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
 206                         printf("   Loading part %d ... ", part);
 207                         memmove((char *) dest, (char *)data, len);
 208 #endif  /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
 209                         break;
 210 #ifdef CONFIG_GZIP
 211                 case IH_COMP_GZIP:
 212                         printf("   Uncompressing part %d ... ", part);
 213                         if (gunzip((void *) dest, unc_len,
 214                                    (uchar *) data, &len) != 0) {
 215                                 puts("GUNZIP ERROR - image not loaded\n");
 216                                 return 1;
 217                         }
 218                         break;
 219 #endif
 220 #if defined(CONFIG_BZIP2) && defined(CONFIG_IMAGE_FORMAT_LEGACY)
 221                 case IH_COMP_BZIP2:
 222                         {
 223                                 int i;
 224
 225                                 printf("   Uncompressing part %d ... ", part);
 226                                 /*
 227                                  * If we've got less than 4 MB of malloc()
 228                                  * space, use slower decompression algorithm
 229                                  * which requires at most 2300 KB of memory.
 230                                  */
 231                                 i = BZ2_bzBuffToBuffDecompress(
 232                                         map_sysmem(ntohl(hdr->ih_load), 0),
 233                                         &unc_len, (char *)data, len,
 234                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
 235                                         0);
 236                                 if (i != BZ_OK) {
 237                                         printf("BUNZIP2 ERROR %d - "
 238                                                 "image not loaded\n", i);
 239                                         return 1;
 240                                 }
 241                         }
 242                         break;
 243 #endif /* CONFIG_BZIP2 */
 244                 default:
 245                         printf("Unimplemented compression type %d\n", comp);
 246                         return 1;
 247                 }
 248                 puts("OK\n");
 249         }
 250
 251         flush_cache(dest, ALIGN(len, ARCH_DMA_MINALIGN));
 252
 253         env_set_hex("fileaddr", data);
 254         env_set_hex("filesize", len);
 255
 256         return 0;
 257 }
 258
 259 #ifdef CONFIG_SYS_LONGHELP
 260 static char imgextract_help_text[] =
 261         "addr part [dest]\n"
 262         "    - extract <part> from legacy image at <addr> and copy to <dest>"
 263 #if defined(CONFIG_FIT)
 264         "\n"
 265         "addr uname [dest]\n"
 266         "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
 267 #endif
 268         "";
 269 #endif
 270
 271 U_BOOT_CMD(
 272         imxtract, 4, 1, do_imgextract,
 273         "extract a part of a multi-image", imgextract_help_text
 274 );