1/* 2 * (C) Copyright 2003, Psyent Corporation <www.psyent.com> 3 * Scott McNutt <smcnutt@psyent.com> 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 28extern void dly_clks( unsigned long ticks ); 29 30void __udelay(unsigned long usec) 31{ 32 /* The Nios core doesn't have a timebase, so we do our 33 * best for now and call a low-level loop that counts 34 * cpu clocks. 35 */ 36 unsigned long cnt = (CONFIG_SYS_CLK_FREQ/1000000) * usec; 37 dly_clks (cnt); 38} 39