1. 根目录:
2. arch
3. score
4. include
5. asm
6. scoreregs.h

#ifndef _ASM_SCORE_SCOREREGS_H
#define _ASM_SCORE_SCOREREGS_H

#include <linux/linkage.h>

/* TIMER register */
#define TIME0BASE		0x96080000
#define P_TIMER0_CTRL		(TIME0BASE + 0x00)
#define P_TIMER0_CPP_CTRL	(TIME0BASE + 0x04)
#define P_TIMER0_PRELOAD	(TIME0BASE + 0x08)
#define P_TIMER0_CPP_REG	(TIME0BASE + 0x0C)
#define P_TIMER0_UPCNT		(TIME0BASE + 0x10)

/* Timer Controller Register */
/* bit 0 Timer enable */
#define TMR_DISABLE	0x0000
#define TMR_ENABLE	0x0001

/* bit 1 Interrupt enable */
#define TMR_IE_DISABLE	0x0000
#define TMR_IE_ENABLE	0x0002

/* bit 2 Output enable */
#define TMR_OE_DISABLE	0x0004
#define TMR_OE_ENABLE	0x0000

/* bit4 Up/Down counting selection */
#define TMR_UD_DOWN	0x0000
#define TMR_UD_UP	0x0010

/* bit5 Up/Down counting control selection */
#define TMR_UDS_UD	0x0000
#define TMR_UDS_EXTUD	0x0020

/* bit6 Time output mode */
#define TMR_OM_TOGGLE	0x0000
#define TMR_OM_PILSE	0x0040

/* bit 8..9 External input active edge selection */
#define TMR_ES_PE	0x0000
#define TMR_ES_NE	0x0100
#define TMR_ES_BOTH	0x0200

/* bit 10..11 Operating mode */
#define TMR_M_FREE	0x0000 /* free running timer mode */
#define TMR_M_PERIODIC	0x0400 /* periodic timer mode */
#define TMR_M_FC	0x0800 /* free running counter mode */
#define TMR_M_PC	0x0c00 /* periodic counter mode */

#define SYSTEM_CLOCK		(27*1000000/4)		/* 27 MHz */
#endif /* _ASM_SCORE_SCOREREGS_H */