1*78acc472SPeter Tyser /* 2*78acc472SPeter Tyser * (C) Copyright 2000-2009 3*78acc472SPeter Tyser * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4*78acc472SPeter Tyser * 5*78acc472SPeter Tyser * See file CREDITS for list of people who contributed to this 6*78acc472SPeter Tyser * project. 7*78acc472SPeter Tyser * 8*78acc472SPeter Tyser * This program is free software; you can redistribute it and/or 9*78acc472SPeter Tyser * modify it under the terms of the GNU General Public License as 10*78acc472SPeter Tyser * published by the Free Software Foundation; either version 2 of 11*78acc472SPeter Tyser * the License, or (at your option) any later version. 12*78acc472SPeter Tyser * 13*78acc472SPeter Tyser * This program is distributed in the hope that it will be useful, 14*78acc472SPeter Tyser * but WITHOUT ANY WARRANTY; without even the implied warranty of 15*78acc472SPeter Tyser * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16*78acc472SPeter Tyser * GNU General Public License for more details. 17*78acc472SPeter Tyser * 18*78acc472SPeter Tyser * You should have received a copy of the GNU General Public License 19*78acc472SPeter Tyser * along with this program; if not, write to the Free Software 20*78acc472SPeter Tyser * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21*78acc472SPeter Tyser * MA 02111-1307 USA 22*78acc472SPeter Tyser */ 23*78acc472SPeter Tyser 24*78acc472SPeter Tyser #include <common.h> 25*78acc472SPeter Tyser #include <watchdog.h> 26*78acc472SPeter Tyser 27*78acc472SPeter Tyser #ifndef CONFIG_WD_PERIOD 28*78acc472SPeter Tyser # define CONFIG_WD_PERIOD (10 * 1000 * 1000) /* 10 seconds default*/ 29*78acc472SPeter Tyser #endif 30*78acc472SPeter Tyser 31*78acc472SPeter Tyser /* ------------------------------------------------------------------------- */ 32*78acc472SPeter Tyser 33*78acc472SPeter Tyser void udelay(unsigned long usec) 34*78acc472SPeter Tyser { 35*78acc472SPeter Tyser ulong kv; 36*78acc472SPeter Tyser 37*78acc472SPeter Tyser do { 38*78acc472SPeter Tyser WATCHDOG_RESET(); 39*78acc472SPeter Tyser kv = usec > CONFIG_WD_PERIOD ? CONFIG_WD_PERIOD : usec; 40*78acc472SPeter Tyser __udelay (kv); 41*78acc472SPeter Tyser usec -= kv; 42*78acc472SPeter Tyser } while(usec); 43*78acc472SPeter Tyser } 44