LXR uboot/common/cmd

   1/*
   2 * (C) Copyright 2001
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24/*
  25 * Misc functions
  26 */
  27#include <common.h>
  28#include <command.h>
  29
  30int do_sleep (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  31{
  32        ulong start = get_timer(0);
  33        ulong delay;
  34
  35        if (argc != 2)
  36                return CMD_RET_USAGE;
  37
  38        delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
  39
  40        while (get_timer(start) < delay) {
  41                if (ctrlc ())
  42                        return (-1);
  43
  44                udelay (100);
  45        }
  46
  47        return 0;
  48}
  49
  50U_BOOT_CMD(
  51        sleep ,    2,    1,     do_sleep,
  52        "delay execution for some time",
  53        "N\n"
  54        "    - delay execution for N seconds (N is _decimal_ !!!)"
  55);
  56