cpu_asm.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	cpu_asm.h (memory)
 *
 *	SH7751R-dependent definitions
 *
 *	Included from assembler sources.
 */

#ifndef _PM_CPU_ASM_H_
#define _PM_CPU_ASM_H_

#include <tk/sysdef.h>

/* ------------------------------------------------------------------------ */
/*
 *	TLB-related
 */

/*
 * Page table entry
 *	The (*) mark is not used in the same manner as in hardware-related definitions.
 *	When written into TLB, they are changed according to hardware-related
 *	definitions.
 */
#define	PT_WriteThrough		0x00000001	/* SH4 only */
#define	PT_Accessed		0x00000002	/* (*) */
#define	PT_Update		0x00000004
#define	PT_Cachable		0x00000008
#define	PT_Writable		0x00000020
#define	PT_User			0x00000040
#define	PT_Present		0x00000100
#define	PT_Clear		0x00000200	/* (*) */
#define	PT_CopyOnWrite		0x00000400	/* (*) */
#define	PT_Valid		0x00000800	/* (*) */
#define	PT_Address		0xfffff000

#define	PTE_NONE		( 0 )		/* Invalid entry */

/*
 * TLB
 */
#define	MMU_Base		0xff000000	/* MMU register base */

#define	UTLB_ADR_TOP		0xf6000000	/* UTLB address array */
#define	UTLB_DAT_TOP		0xf7000000	/* UTLB data array 1 */
#define	UTLB_DAT2_TOP		0xf7800000	/* UTLB data array 2 */
#define	UTLB_ENT(n)		( (n) << 8 )	/* n = 0 - 63 */
#define	UTLB_A			0x00000080	/* Associative specification */

#define	ITLB_ADR_TOP		0xf2000000	/* ITLB address array */
#define	ITLB_DAT_TOP		0xf3000000	/* ITLB data array 1 */
#define	ITLB_DAT2_TOP		0xf3800000	/* ITLB data array 2 */
#define	ITLB_ENT(n)		( (n) << 8 )	/* n = 0 - 3 */

#define	TLB_ASID		0x000000ff	/* Logical space ID */
#define	TLB_V			0x00000100	/* Valid */
#define	TLB_D			0x00000200	/* Dirty */

#define	UTLB_MASK		0x1ffff16d	/* UTLB setting value mask */
#define	ITLB_MASK		0x1ffff148	/* ITLB setting value mask */
#define	TLB_MASK		UTLB_MASK
#define	TLB_PageSize4K		0x00000010	/* Specify page size at 4KB */
#define	TLB_Share		0x00000002	/* Specify shared state. */

/* ------------------------------------------------------------------------ */
/*
 *	Cache-related
 */
#define	CACHE_LINESZ	0x20		/* Cache line size */

#define	ICACHE_ADR_TOP	0xf0000000	/* Instruction cache address array */
#define	ICACHE_DAT_TOP	0xf1000000	/* Instruction cache data array */
#define	ICACHE_WAY_MSK	0x00002000
#define	ICACHE_ENT_MSK	0x00001fe0

#define	DCACHE_ADR_TOP	0xf4000000	/* Data cache address array */
#define	DCACHE_DAT_TOP	0xf5000000	/* Data cache data array */
#define	DCACHE_WAY_MSK	0x00004000
#define	DCACHE_ENT_MSK	0x00003fe0

#define	CACHE_V		0x00000001	/* Valid */
#define	CACHE_U		0x00000002	/* Dirty */
#define	CACHE_TAG	0xfffffc00	/* Tag */

#define	CACHE_A		0x00000008	/* Associative specification */

/* ------------------------------------------------------------------------ */
#endif