mcftimer.h

u-boot-1.1.6 源码包

/*
 * mcftimer.h -- ColdFire internal TIMER support defines.
 *
 * Based on mcftimer.h of uCLinux distribution:
 *      (C) Copyright 1999-2002, Greg Ungerer ([e-mail])
 *      (C) Copyright 2000, Lineo Inc. (www.lineo.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
 */

/****************************************************************************/
#ifndef	mcftimer_h
#define	mcftimer_h
/****************************************************************************/

#include <linux/config.h>

/*
 *	Get address specific defines for this ColdFire member.
 */
#if defined(CONFIG_M5204) || defined(CONFIG_M5206) || defined(CONFIG_M5206e)
#define	MCFTIMER_BASE1		0x100		/* Base address of TIMER1 */
#define	MCFTIMER_BASE2		0x120		/* Base address of TIMER2 */
#elif defined(CONFIG_M5272)
#define MCFTIMER_BASE1		0x200           /* Base address of TIMER1 */
#define MCFTIMER_BASE2		0x220           /* Base address of TIMER2 */
#define MCFTIMER_BASE3		0x240           /* Base address of TIMER4 */
#define MCFTIMER_BASE4		0x260           /* Base address of TIMER3 */
#elif defined(CONFIG_M5249) || defined(CONFIG_M5307) || defined(CONFIG_M5407)
#define MCFTIMER_BASE1		0x140           /* Base address of TIMER1 */
#define MCFTIMER_BASE2		0x180           /* Base address of TIMER2 */
#elif defined(CONFIG_M5282) | defined(CONFIG_M5271)
#define MCFTIMER_BASE1		0x150000        /* Base address of TIMER1 */
#define MCFTIMER_BASE2		0x160000        /* Base address of TIMER2 */
#define MCFTIMER_BASE3		0x170000        /* Base address of TIMER4 */
#define MCFTIMER_BASE4		0x180000	/* Base address of TIMER3 */
#endif

/*
 *	Define the TIMER register set addresses.
 */
#define	MCFTIMER_TMR		0x00		/* Timer Mode reg (r/w) */
#define	MCFTIMER_TRR		0x02		/* Timer Reference (r/w) */
#define	MCFTIMER_TCR		0x04		/* Timer Capture reg (r/w) */
#define	MCFTIMER_TCN		0x06		/* Timer Counter reg (r/w) */
#define	MCFTIMER_TER		0x11		/* Timer Event reg (r/w) */


/*
 *	Define the TIMER register set addresses for 5282.
 */
#define MCFTIMER_PCSR		0
#define MCFTIMER_PMR		1
#define MCFTIMER_PCNTR		2

/*
 *	Bit definitions for the Timer Mode Register (TMR).
 *	Register bit flags are common accross ColdFires.
 */
#define	MCFTIMER_TMR_PREMASK	0xff00		/* Prescalar mask */
#define	MCFTIMER_TMR_DISCE	0x0000		/* Disable capture */
#define	MCFTIMER_TMR_ANYCE	0x00c0		/* Capture any edge */
#define	MCFTIMER_TMR_FALLCE	0x0080		/* Capture fallingedge */
#define	MCFTIMER_TMR_RISECE	0x0040		/* Capture rising edge */
#define	MCFTIMER_TMR_ENOM	0x0020		/* Enable output toggle */
#define	MCFTIMER_TMR_DISOM	0x0000		/* Do single output pulse  */
#define	MCFTIMER_TMR_ENORI	0x0010		/* Enable ref interrupt */
#define	MCFTIMER_TMR_DISORI	0x0000		/* Disable ref interrupt */
#define	MCFTIMER_TMR_RESTART	0x0008		/* Restart counter */
#define	MCFTIMER_TMR_FREERUN	0x0000		/* Free running counter */
#define	MCFTIMER_TMR_CLKTIN	0x0006		/* Input clock is TIN */
#define	MCFTIMER_TMR_CLK16	0x0004		/* Input clock is /16 */
#define	MCFTIMER_TMR_CLK1	0x0002		/* Input clock is /1 */
#define	MCFTIMER_TMR_CLKSTOP	0x0000		/* Stop counter */
#define	MCFTIMER_TMR_ENABLE	0x0001		/* Enable timer */
#define	MCFTIMER_TMR_DISABLE	0x0000		/* Disable timer */

/*
 *	Bit definitions for the Timer Event Registers (TER).
 */
#define	MCFTIMER_TER_CAP	0x01		/* Capture event */
#define	MCFTIMER_TER_REF	0x02		/* Refernece event */

/*
 *	Bit definitions for the 5282 PIT Control and Status Register (PCSR).
 */
#define MCFTIMER_PCSR_EN	0x0001
#define MCFTIMER_PCSR_RLD	0x0002
#define MCFTIMER_PCSR_PIF	0x0004
#define MCFTIMER_PCSR_PIE	0x0008
#define MCFTIMER_PCSR_OVW	0x0010
#define MCFTIMER_PCSR_HALTED	0x0020
#define MCFTIMER_PCSR_DOZE	0x0040


/****************************************************************************/
#endif	/* mcftimer_h */