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  • /*
     * (C) Copyright 2000-2009
     * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
     *
     * See file CREDITS for list of people who contributed to this
     * project.
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License as
     * published by the Free Software Foundation; either version 2 of
     * the License, or (at your option) any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
     * MA 02111-1307 USA
     */
    
    #include <common.h>
    #include <watchdog.h>
    
    #ifndef CONFIG_WD_PERIOD
    # define CONFIG_WD_PERIOD	(10 * 1000 * 1000)	/* 10 seconds default*/
    #endif
    
    /* ------------------------------------------------------------------------- */
    
    void udelay(unsigned long usec)
    {
    	ulong kv;
    
    	do {
    		WATCHDOG_RESET();
    		kv = usec > CONFIG_WD_PERIOD ? CONFIG_WD_PERIOD : usec;
    		__udelay (kv);
    		usec -= kv;
    	} while(usec);
    }