common/cmd_hash.c

   1 /*
   2  * Copyright (c) 2012 The Chromium OS Authors.
   3  *
   4  * (C) Copyright 2011
   5  * Joe Hershberger, National Instruments, joe.hershberger@ni.com
   6  *
   7  * (C) Copyright 2000
   8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <command.h>
  28 #include <hash.h>
  29
  30 static int do_hash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  31 {
  32 #ifdef CONFIG_HASH_VERIFY
  33         int verify = 0;
  34
  35         if (argc < 4)
  36                 return CMD_RET_USAGE;
  37         if (!strcmp(argv[1], "-v")) {
  38                 verify = 1;
  39                 argc--;
  40                 argv++;
  41         }
  42 #else
  43         const int verify = 0;
  44 #endif
  45         /* Move forward to 'algorithm' parameter */
  46         argc--;
  47         argv++;
  48         return hash_command(*argv, verify, cmdtp, flag, argc - 1, argv + 1);
  49 }
  50
  51 #ifdef CONFIG_HASH_VERIFY
  52 U_BOOT_CMD(
  53         hash,   6,      1,      do_hash,
  54         "compute hash message digest",
  55         "algorithm address count [[*]sum_dest]\n"
  56                 "    - compute message digest [save to env var / *address]\n"
  57         "hash -v algorithm address count [*]sum\n"
  58                 "    - verify hash of memory area with env var / *address"
  59 );
  60 #else
  61 U_BOOT_CMD(
  62         hash,   5,      1,      do_hash,
  63         "compute message digest",
  64         "algorithm address count [[*]sum_dest]\n"
  65                 "    - compute message digest [save to env var / *address]"
  66 );
  67 #endif