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 33 void 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