bsp.h

UC/OS 在SparcLite 上的移植范例

/* 
; ------------------------------------------------------------------
; Header: bsp.h - Fujitsu 832EK eval. board low level routines.
;
; uC/OS Real-time multitasking kernel for the Fujitsu SPARClite processor.
;
; Written by Brad Denniston ([e-mail]) Sept 1998
; Description: 
;	Board support package for Fujitsu SPARClite EV832 evaluation board.
;	Defines for timer 
; ------------------------------------------------------------------
*/

#ifndef _BSP_H_
#define _BSP_H_


/* SIO channels: 

/* Interrupts on this board */
#define	TMR1_RELOAD		0x4e1f0000	/* Timer1 reload value */

#define	TRIGGER_MODE1	0x05100000
#define	IRL_CLEAR		0x00100000
#define	TRIGGER_MODE0	0x11c00000	/* int 11 falling edge */
#define	IRQ_MASK		0xf7fe0000	/* int 11 -- 1 second timer */
#define	IRQ_ALLMASK		0xffff0000	/* mask all ints */
#define	IRL_ALLCLEAR	0xffff0000	/* clear all ints */

/* timers - there are 3 counters in the 82C54 timer chip */
# define TIMER_BASE_ADDR	0x14000003
# define TREGCTL	0xc				/* control register */
# define TREG0		0x0				/* counter 0 */
# define TREG1		0x4				/* counter 1 */
# define TREG2		0x8				/* counter 2 */
# define TIMER_VAL0	10
# define TIMER_VAL1	50
# define TIMER_VAL2	500
# define TIMER_SEC_RELOAD 20000		/* 1 second */
# define TIMER_TASK_TIME	1000	/* 20 ticks/sec */

/* counter control word is formatted as: 
	SC  SC  RW  RW  MO  MO  MO  BCD */

/* SC bits select a counter control word or readback */
# define CTR_SELECT0	(0<<6)
# define CTR_SELECT1	(1<<6)
# define CTR_SELECT2	(2<<6)
# define CTR_READBACK	(3<<6)

/* Read/Write bits */
# define CTR_RWLATCH	(0<<4)	/* latch the counter */
# define CTR_RWLOW	(1<<4)		/* read only low byte */
# define CTR_RWHIGH	(2<<4)		/* read only high byte */
# define CTR_RWLOHI	(3<<4)		/* read low, then high byte */
# define CTR_16BIT	0			/* set counter to 16-bit vs. bcd */

/* counter mode */
# define CTR_MODE0	(0<<1)		/* interrupt on terminal count, must reload */
# define CTR_MODE1	(1<<1)		/* hardware retriggerable one-shot */
# define CTR_MODE2	(2<<1)		/* rate generator for real time clock */
# define CTR_MODE3	(3<<1)		/* square wave - baud rate generation */
# define CTR_MODE4	(4<<1)		/* pulse when count reaches 0 */
# define CTR_MODE5	(5<<1)		/* hardware triggered strobe */

/* address space */
#define CC1_ASI		4
#define IRC_ASI		7
#define IRC_BASE	0x00000000

#ifdef LANGUAGE_C
void InitTimer();
void BSPInit();
#endif

#endif    /* _BSP_H_ */