/* * (C) Copyright 2003, Psyent Corporation <www.psyent.com> * Scott McNutt <smcnutt@psyent.com> * * 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> extern void dly_clks( unsigned long ticks ); void udelay(unsigned long usec) { /* The Nios core doesn't have a timebase, so we do our * best for now and call a low-level loop that counts * cpu clocks. */ unsigned long cnt = (CONFIG_SYS_CLK_FREQ/1000000) * usec; WATCHDOG_RESET (); /* trigger watchdog if needed */ dly_clks (cnt); }