/* * (C) Copyright 2004-2005, Greg Ungerer <greg.ungerer@opengear.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 <asm/arch/platform.h>/* * Handy KS8695 register access functions. */#define	ks8695_read(a)    *((volatile ulong *) (KS8695_IO_BASE + (a)))#define	ks8695_write(a,v) *((volatile ulong *) (KS8695_IO_BASE + (a))) = (v)int timer_inited;ulong timer_ticks;int interrupt_init (void){	/* nothing happens here - we don't setup any IRQs */	return (0);}/* * Initial timer set constants. Nothing complicated, just set for a 1ms * tick. */#define	TIMER_INTERVAL	(TICKS_PER_uSEC * mSEC_1)#define	TIMER_COUNT	(TIMER_INTERVAL / 2)#define	TIMER_PULSE	TIMER_COUNTvoid reset_timer_masked(void){	/* Set the hadware timer for 1ms */	ks8695_write(KS8695_TIMER1, TIMER_COUNT);	ks8695_write(KS8695_TIMER1_PCOUNT, TIMER_PULSE);	ks8695_write(KS8695_TIMER_CTRL, 0x2);	timer_ticks = 0;	timer_inited++;}void reset_timer(void){	reset_timer_masked();}ulong get_timer_masked(void){	/* Check for timer wrap */	if (ks8695_read(KS8695_INT_STATUS) & KS8695_INTMASK_TIMERINT1) {		/* Clear interrupt condition */		ks8695_write(KS8695_INT_STATUS, KS8695_INTMASK_TIMERINT1);		timer_ticks++;	}	return timer_ticks;}ulong get_timer(ulong base){       return (get_timer_masked() - base);}void set_timer(ulong t){	timer_ticks = t;}void udelay(ulong usec){	ulong start = get_timer_masked();	ulong end;	if (!timer_inited)		reset_timer();	/* Only 1ms resolution :-( */	end = usec / 1000;	while (get_timer(start) < end)		;}void reset_cpu (ulong ignored){	ulong tc;	/* Set timer0 to watchdog, and let it timeout */	tc = ks8695_read(KS8695_TIMER_CTRL) & 0x2;	ks8695_write(KS8695_TIMER_CTRL, tc);	ks8695_write(KS8695_TIMER0, ((10 << 8) | 0xff));	ks8695_write(KS8695_TIMER_CTRL, (tc | 0x1));	/* Should only wait here till watchdog resets */	for (;;)		;}