cmd/unlz4.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2020
   4  * FUJITSU COMPUTERTECHNOLOGIES LIMITED. All rights reserved.
   5  */
   6
   7 #include <command.h>
   8 #include <env.h>
   9 #include <mapmem.h>
  10 #include <vsprintf.h>
  11 #include <u-boot/lz4.h>
  12
  13 static int do_unlz4(struct cmd_tbl *cmdtp, int flag, int argc,
  14                     char *const argv[])
  15 {
  16         unsigned long src, dst;
  17         size_t src_len = ~0UL, dst_len = ~0UL;
  18         int ret;
  19
  20         switch (argc) {
  21         case 4:
  22                 src = hextoul(argv[1], NULL);
  23                 dst = hextoul(argv[2], NULL);
  24                 dst_len = hextoul(argv[3], NULL);
  25                 break;
  26         default:
  27                 return CMD_RET_USAGE;
  28         }
  29
  30         ret = ulz4fn(map_sysmem(src, 0), src_len, map_sysmem(dst, dst_len),
  31                      &dst_len);
  32         if (ret) {
  33                 printf("Uncompressed err :%d\n", ret);
  34                 return 1;
  35         }
  36
  37         printf("Uncompressed size: %zd = 0x%zX\n", dst_len, dst_len);
  38         env_set_hex("filesize", dst_len);
  39
  40         return 0;
  41 }
  42
  43 U_BOOT_CMD(unlz4, 4, 1, do_unlz4,
  44            "lz4 uncompress a memory region",
  45            "srcaddr dstaddr dstsize\n"
  46            "NOTE: Specify the destination size that is sufficiently larger\n"
  47            " than the source size.\n"
  48 );