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 <cpu_func.h>
  17 #include <env.h>
  18 #include <gzip.h>
  19 #include <image.h>
  20 #include <malloc.h>
  21 #include <mapmem.h>
  22 #include <watchdog.h>
  23 #if defined(CONFIG_BZIP2)
  24 #include <bzlib.h>
  25 #endif
  26 #include <asm/byteorder.h>
  27 #include <asm/cache.h>
  28 #include <asm/io.h>
  29
  30 #ifndef CONFIG_SYS_XIMG_LEN
  31 /* use 8MByte as default max gunzip size */
  32 #define CONFIG_SYS_XIMG_LEN     0x800000
  33 #endif
  34
  35 static int
  36 do_imgextract(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  37 {
  38         ulong           addr = image_load_addr;
  39         ulong           dest = 0;
  40         ulong           data, len;
  41         int             verify;
  42         int             part = 0;
  43 #if defined(CONFIG_LEGACY_IMAGE_FORMAT)
  44         ulong           count;
  45         image_header_t  *hdr = NULL;
  46 #endif
  47 #if defined(CONFIG_FIT)
  48         const char      *uname = NULL;
  49         const void*     fit_hdr;
  50         int             noffset;
  51         const void      *fit_data;
  52         size_t          fit_len;
  53 #endif
  54 #ifdef CONFIG_GZIP
  55         uint            unc_len = CONFIG_SYS_XIMG_LEN;
  56 #endif
  57         uint8_t         comp;
  58
  59         verify = env_get_yesno("verify");
  60
  61         if (argc > 1) {
  62                 addr = hextoul(argv[1], NULL);
  63         }
  64         if (argc > 2) {
  65                 part = hextoul(argv[2], NULL);
  66 #if defined(CONFIG_FIT)
  67                 uname = argv[2];
  68 #endif
  69         }
  70         if (argc > 3) {
  71                 dest = hextoul(argv[3], NULL);
  72         }
  73
  74         switch (genimg_get_format((void *)addr)) {
  75 #if defined(CONFIG_LEGACY_IMAGE_FORMAT)
  76         case IMAGE_FORMAT_LEGACY:
  77
  78                 printf("## Copying part %d from legacy image "
  79                         "at %08lx ...\n", part, addr);
  80
  81                 hdr = (image_header_t *)addr;
  82                 if (!image_check_magic(hdr)) {
  83                         printf("Bad Magic Number\n");
  84                         return 1;
  85                 }
  86
  87                 if (!image_check_hcrc(hdr)) {
  88                         printf("Bad Header Checksum\n");
  89                         return 1;
  90                 }
  91 #ifdef DEBUG
  92                 image_print_contents(hdr);
  93 #endif
  94
  95                 if (!image_check_type(hdr, IH_TYPE_MULTI) &&
  96                     !image_check_type(hdr, IH_TYPE_SCRIPT)) {
  97                         printf("Wrong Image Type for %s command\n",
  98                                         cmdtp->name);
  99                         return 1;
 100                 }
 101
 102                 comp = image_get_comp(hdr);
 103                 if ((comp != IH_COMP_NONE) && (argc < 4)) {
 104                         printf("Must specify load address for %s command "
 105                                         "with compressed image\n",
 106                                         cmdtp->name);
 107                         return 1;
 108                 }
 109
 110                 if (verify) {
 111                         printf("   Verifying Checksum ... ");
 112                         if (!image_check_dcrc(hdr)) {
 113                                 printf("Bad Data CRC\n");
 114                                 return 1;
 115                         }
 116                         printf("OK\n");
 117                 }
 118
 119                 count = image_multi_count(hdr);
 120                 if (part >= count) {
 121                         printf("Bad Image Part\n");
 122                         return 1;
 123                 }
 124
 125                 image_multi_getimg(hdr, part, &data, &len);
 126                 break;
 127 #endif
 128 #if defined(CONFIG_FIT)
 129         case IMAGE_FORMAT_FIT:
 130                 if (uname == NULL) {
 131                         puts("No FIT subimage unit name\n");
 132                         return 1;
 133                 }
 134
 135                 printf("## Copying '%s' subimage from FIT image "
 136                         "at %08lx ...\n", uname, addr);
 137
 138                 fit_hdr = (const void *)addr;
 139                 if (fit_check_format(fit_hdr, IMAGE_SIZE_INVAL)) {
 140                         puts("Bad FIT image format\n");
 141                         return 1;
 142                 }
 143
 144                 /* get subimage node offset */
 145                 noffset = fit_image_get_node(fit_hdr, uname);
 146                 if (noffset < 0) {
 147                         printf("Can't find '%s' FIT subimage\n", uname);
 148                         return 1;
 149                 }
 150
 151                 if (!fit_image_check_comp(fit_hdr, noffset, IH_COMP_NONE)
 152                     && (argc < 4)) {
 153                         printf("Must specify load address for %s command "
 154                                 "with compressed image\n",
 155                                 cmdtp->name);
 156                         return 1;
 157                 }
 158
 159                 /* verify integrity */
 160                 if (verify) {
 161                         if (!fit_image_verify(fit_hdr, noffset)) {
 162                                 puts("Bad Data Hash\n");
 163                                 return 1;
 164                         }
 165                 }
 166
 167                 /* get subimage/external data address and length */
 168                 if (fit_image_get_data_and_size(fit_hdr, noffset,
 169                                                &fit_data, &fit_len)) {
 170                         puts("Could not find script subimage data\n");
 171                         return 1;
 172                 }
 173
 174                 if (fit_image_get_comp(fit_hdr, noffset, &comp))
 175                         comp = IH_COMP_NONE;
 176
 177                 data = (ulong)fit_data;
 178                 len = (ulong)fit_len;
 179                 break;
 180 #endif
 181         default:
 182                 puts("Invalid image type for imxtract\n");
 183                 return 1;
 184         }
 185
 186         if (argc > 3) {
 187                 switch (comp) {
 188                 case IH_COMP_NONE:
 189 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
 190                         {
 191                                 size_t l = len;
 192                                 size_t tail;
 193                                 void *to = (void *) dest;
 194                                 void *from = (void *)data;
 195
 196                                 printf("   Loading part %d ... ", part);
 197
 198                                 while (l > 0) {
 199                                         tail = (l > CHUNKSZ) ? CHUNKSZ : l;
 200                                         WATCHDOG_RESET();
 201                                         memmove(to, from, tail);
 202                                         to += tail;
 203                                         from += tail;
 204                                         l -= tail;
 205                                 }
 206                         }
 207 #else   /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
 208                         printf("   Loading part %d ... ", part);
 209                         memmove((char *) dest, (char *)data, len);
 210 #endif  /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
 211                         break;
 212 #ifdef CONFIG_GZIP
 213                 case IH_COMP_GZIP:
 214                         printf("   Uncompressing part %d ... ", part);
 215                         if (gunzip((void *) dest, unc_len,
 216                                    (uchar *) data, &len) != 0) {
 217                                 puts("GUNZIP ERROR - image not loaded\n");
 218                                 return 1;
 219                         }
 220                         break;
 221 #endif
 222 #if defined(CONFIG_BZIP2) && defined(CONFIG_LEGACY_IMAGE_FORMAT)
 223                 case IH_COMP_BZIP2:
 224                         {
 225                                 int i;
 226
 227                                 printf("   Uncompressing part %d ... ", part);
 228                                 /*
 229                                  * If we've got less than 4 MB of malloc()
 230                                  * space, use slower decompression algorithm
 231                                  * which requires at most 2300 KB of memory.
 232                                  */
 233                                 i = BZ2_bzBuffToBuffDecompress(
 234                                         map_sysmem(ntohl(hdr->ih_load), 0),
 235                                         &unc_len, (char *)data, len,
 236                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024),
 237                                         0);
 238                                 if (i != BZ_OK) {
 239                                         printf("BUNZIP2 ERROR %d - "
 240                                                 "image not loaded\n", i);
 241                                         return 1;
 242                                 }
 243                         }
 244                         break;
 245 #endif /* CONFIG_BZIP2 */
 246                 default:
 247                         printf("Unimplemented compression type %d\n", comp);
 248                         return 1;
 249                 }
 250                 puts("OK\n");
 251         }
 252
 253         flush_cache(dest, ALIGN(len, ARCH_DMA_MINALIGN));
 254
 255         env_set_hex("fileaddr", data);
 256         env_set_hex("filesize", len);
 257
 258         return 0;
 259 }
 260
 261 #ifdef CONFIG_SYS_LONGHELP
 262 static char imgextract_help_text[] =
 263         "addr part [dest]\n"
 264         "    - extract <part> from legacy image at <addr> and copy to <dest>"
 265 #if defined(CONFIG_FIT)
 266         "\n"
 267         "addr uname [dest]\n"
 268         "    - extract <uname> subimage from FIT image at <addr> and copy to <dest>"
 269 #endif
 270         "";
 271 #endif
 272
 273 U_BOOT_CMD(
 274         imxtract, 4, 1, do_imgextract,
 275         "extract a part of a multi-image", imgextract_help_text
 276 );