u-boot-brain/arch/arm/cpu/arm720t/interrupts.c

/*
 * (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 <asm/proc-armv/ptrace.h>
#include <asm/hardware.h>

/* we always count down the max. */
#define TIMER_LOAD_VAL 0xffff
/* macro to read the 16 bit timer */
#define READ_TIMER (IO_TC1D & 0xffff)

#ifdef CONFIG_USE_IRQ
void do_irq (struct pt_regs *pt_regs)
{
#if defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
	/* No do_irq() for IntegratorAP/CM720T as yet */
#else
#error do_irq() not defined for this CPU type
#endif
}
#endif

#if defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
	/* Use IntegratorAP routines in board/integratorap.c */
#else

static ulong timestamp;
static ulong lastdec;

int timer_init (void)
{
#if defined(CONFIG_TEGRA)
	/* No timer routines for tegra as yet */
	lastdec = 0;
#else
#error No timer_init() defined for this CPU type
#endif
	timestamp = 0;

	return (0);
}

#endif /* ! IntegratorAP */

/*
 * timer without interrupts
 */


#if defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
	/* No timer routines for IntegratorAP/CM720T as yet */
#elif defined(CONFIG_TEGRA)
	/* No timer routines for tegra as yet */
#else
#error Timer routines not defined for this CPU type
#endif