/* * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Alex Zuepke <azu@sysgo.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 <SA-1100.h> int interrupt_init (void) { /* nothing happens here - we don't setup any IRQs */ return (0); } void reset_timer (void) { reset_timer_masked (); } ulong get_timer (ulong base) { return get_timer_masked (); } void set_timer (ulong t) { /* nop */ } void udelay (unsigned long usec) { udelay_masked (usec); } void reset_timer_masked (void) { OSCR = 0; } ulong get_timer_masked (void) { return OSCR; } void udelay_masked (unsigned long usec) { ulong tmo; ulong endtime; signed long diff; if (usec >= 1000) { tmo = usec / 1000; tmo *= CONFIG_SYS_HZ; tmo /= 1000; } else { tmo = usec * CONFIG_SYS_HZ; tmo /= (1000*1000); } endtime = get_timer_masked () + tmo; do { ulong now = get_timer_masked (); diff = endtime - now; } while (diff >= 0); } /* * This function is derived from PowerPC code (read timebase as long long). * On ARM it just returns the timer value. */ unsigned long long get_ticks(void) { return get_timer(0); } /* * This function is derived from PowerPC code (timebase clock frequency). * On ARM it returns the number of timer ticks per second. */ ulong get_tbclk (void) { ulong tbclk; tbclk = CONFIG_SYS_HZ; return tbclk; }