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/SH7727)
 *
 *	System common information 
 *
 *   0x8c000000	+-----------------------+
 *		|Vector table of	| (EXPEVT  / 0x20 * 4) + 0x8c000000
 *		|exception codes and	| (INTEVT2 / 0x20 * 4) + 0x8c000000
 *		|interrupt factors	|
 *   0x8c0001c0	+-----------------------+
 *		|TRAPA vector table	| TRA + 0x8c000000
 *		|  TRAPA 0x70 - 0x7f	|
 *   0x8c000200	+-----------------------+
 *		|Default handler	|
 *   0x8c000204	+-----------------------+
 *		|TLB miss exception	| VBR + 0x400 exception handler
 *		|handler		|
 *   0x8c000208	+-----------------------+
 *		|System common info.	|
 *   0x8c000280	+-----------------------+
 *		|EIT stack		| (640 byte)
 *   0x8c000500	+-----------------------+
 */

#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 common information 
 */
typedef struct {
	VW		rsv[20];	/* Reserved (always 0) */
	UB		bootdev[8];	/* Boot device name */
	BootMode	bm;		/* Boot mode */
	UW		loop64us;	/* Loop count per 64 micro sec */
	UB		*sysconf;	/* SYSCONF top */
	UB		*devconf;	/* DEVCONF top */
	FP		chkmem;		/* Monitor memory check function */
	UH		Iclk;		/* SH7727 internal clock (MHz) */
	UH		Pclk;		/* SH7727 peripheral clock (MHz) */
	VP		ramtop;		/* RAM free space top */
	VP		ramend;		/* RAM free space end */
} SysCommonInfo;

/*
 * System common area 
 */
#define	N_INTVEC	128
#define	N_INTSTACK	160
typedef struct {
	FP		intvec[N_INTVEC];	/* EIT vector */
	FP		defaulthdr;		/* Default handler */
	FP		tlbmisshdr;		/* TLB miss exception handler */
	SysCommonInfo	scinfo;			/* System common information */
	UW		intstack[N_INTSTACK];	/* Interrupt stack area */
} SysCommonArea;

#define	SCArea	( (SysCommonArea*)0x8c000000 )
#define	SCInfo	( SCArea->scinfo )

#endif /* _in_asm_source_ */

/*
 * Vector table addresses 
 */
#define	VECTBL		0x8c000000	/* Vector table top */
#define	DEFAULTHDR	0x8c000200	/* Default handler */
#define	TLBMISSHDR	0x8c000204	/* TLB miss exception handler */

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