sysinfo_depend.h

日本著名的的嵌入式实时操作系统T-Kernel的源码及用户手册。

/*
 *----------------------------------------------------------------------
 *    T-Kernel
 *
 *    Copyright (C) 2004 by Ken Sakamura. All rights reserved.
 *    T-Kernel is distributed under the T-License.
 *----------------------------------------------------------------------
 *
 *    Version:   1.01.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2004/6/28.
 *
 *----------------------------------------------------------------------
 */

/*
 *	@(#)sysinfo_depend.h (sys/VR4131)
 *
 *	System common information 
 *
 *   0x80000000	+-----------------------+
 *		|Exception vector table	|
 *   0x80000280	+-----------------------+
 *		|System common info.	|
 *   0x800002c0	+-----------------------+
 */

#ifndef __SYS_SYSINFO_DEPEND_H__
#define __SYS_SYSINFO_DEPEND_H__

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _in_asm_source_

/*
 * Boot mode/Operation mode 
 */
typedef union {
	struct {
		UW	debug:1;	/* When in debug mode 1 */
		UW	fsrcv:1;	/* When in disk repair mode 1 */
		UW	rsv:12;		/* Reserved (always 0) */
		UW	basic:1;	/* When in basic operation mode 1 */
		UW	rsv2:17;	/* Reserved (always 0) */
	} c;
	UW	w;
} BootMode;

#define	BM_DEBUG	0x00000001	/* Debug mode */
#define	BM_FSRCV	0x00000002	/* Disk repair mode */
#define	BM_BASIC	0x00004000	/* Basic operation mode */

/*
 * System shared information  
 */
typedef struct {
	VP	ramtop;		/* RAM free space top */
	VP	ramend;		/* RAM free space end */
	UB	*sysconf;	/* SYSCONF top */
	UB	*devconf;	/* DEVCONF top */
	VP	istkpos;	/* Exception stack pointer */
	VP	sstktop;	/* System stack top */
	UW	taskmode;	/* Task mode flag */
	FP	chkmem;		/* Memory check function */
	UH	VTClock;	/* Peripheral interface clock (1/100 MHz) */
	UH	TClock;		/* Built-in peripheral clock (1/100 MHz) */
	UW	loop64us;	/* Loop count per 64 micro sec */
	BootMode bm;		/* Boot mode */
	UB	bootdev[8];	/* Boot device name */
	VW	rsv[3];		/* Reserved (always 0) */
} SysCommonInfo;

/*
 * System shared area 
 */
#define	N_INTVEC	160		/* Vector table size */
typedef struct {
	FP		intvec[N_INTVEC];	/* EIT vector */
	SysCommonInfo	scinfo;			/* System shared information */
} SysCommonArea;

#define	SCArea	( (SysCommonArea*)0x80000000 )
#define	SCInfo	( SCArea->scinfo )

#endif /* _in_asm_source_ */

/*
 * Vector table
 */
#define	EIT_VECTBL	0x80000000	/* Vector table top */

#define	EITVEC(n)	( EIT_VECTBL + (n) * 4 )
#define	XEITVEC(n)	( EITVEC(n) + 0x20000000 )	/* Non-cache area */

#define	EIT_DEFAULT	0		/* Default handler */
#define	EIT_NMI		1		/* NMI/soft reset */
#define	EIT_TLBMISS	2		/* TLB non matching */
#define	EIT_XTLBMISS	3		/* XTLB non matching */
#define	EIT_CACHEERR	4		/* Cache error */
#define	EIT_EXC(n)	(   5 + (n) )	/* Exception (ExcCode)	0 - 31 */
#define	EIT_IP(n)	(  63 - (n) )	/* Interrupt (IP)	0 - 7  */
#define	EIT_IRQ(n)	(  95 - (n) )	/* Interrupt controller	0 - 31 */
#define	EIT_GPIO(n)	( 127 - (n) )	/* GPIO interrupt	0 - 31 */
#define	EIT_FPGA(n)	( 159 - (n) )	/* FPGA interrupt	0 - 31 */

#ifdef __cplusplus
}
#endif
#endif /* __SYS_SYSINFO_DEPEND_H__ */