LXR uboot/lib/time.c

   1/*
   2 * (C) Copyright 2000-2009
   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#include <common.h>
  25#include <watchdog.h>
  26
  27#ifndef CONFIG_WD_PERIOD
  28# define CONFIG_WD_PERIOD       (10 * 1000 * 1000)      /* 10 seconds default*/
  29#endif
  30
  31/* ------------------------------------------------------------------------- */
  32
  33void udelay(unsigned long usec)
  34{
  35        ulong kv;
  36
  37        do {
  38                WATCHDOG_RESET();
  39                kv = usec > CONFIG_WD_PERIOD ? CONFIG_WD_PERIOD : usec;
  40                __udelay (kv);
  41                usec -= kv;
  42        } while(usec);
  43}
  44
  45void mdelay(unsigned long msec)
  46{
  47        while (msec--)
  48                udelay(1000);
  49}
  50