mmu.h

2410开发板上键盘与LED的驱动实验

/***************************************************************************\
	Copyright (c) 2004-2007 [e-mail], All rights reserved.
	by threewter	2004.4.26
\***************************************************************************/
	

/***************************************************************************\
    #说明: 
	----------------------------------  Bug  --------------------------------------

	----------------------------------  TODO list  --------------------------------------

	----------------------------------修正--------------------------------------
	2004-5-17	创建

\***************************************************************************/

#ifndef __MMU_H__
#define  __MMU_H__

#define DESC_SEC	(0x2|(1<<4))
#define CB		(3<<2)  //cache_on, write_back
#define CNB		(2<<2)  //cache_on, write_through 
#define NCB             (1<<2)  //cache_off,WR_BUF on
#define NCNB		(0<<2)  //cache_off,WR_BUF off
#define AP_RW		(3<<10) //supervisor=RW, user=RW
#define AP_RO		(2<<10) //supervisor=RW, user=RO

#define DOMAIN_FAULT	(0x0)
#define DOMAIN_CHK	(0x1) 
#define DOMAIN_NOTCHK	(0x3) 
#define DOMAIN0		(0x0<<5)
#define DOMAIN1		(0x1<<5)

#define DOMAIN0_ATTR	(DOMAIN_CHK<<0) 
#define DOMAIN1_ATTR	(DOMAIN_FAULT<<2) 

#define RW_CB		(AP_RW|DOMAIN0|CB|DESC_SEC)
#define RW_CNB		(AP_RW|DOMAIN0|CNB|DESC_SEC)
#define RW_NCNB		(AP_RW|DOMAIN0|NCNB|DESC_SEC)
#define RW_FAULT	(AP_RW|DOMAIN1|NCNB|DESC_SEC)

#include "asm-mmu.h"

int MMU_Init(void);
void MMU_SetMTT(int vaddrStart,int vaddrEnd,int paddrStart,int attr);
//int virt2phys(int vaddr);
//void remap_pages(U32 vaddr, U32 phyaddr, U32 size, U32 flags);

#endif //#ifndef __MMU_H__