mmu.h

来自「优龙电ARM2410开发板GPRS--------GPRS/GSM通讯实验源程序」· C头文件 代码 · 共 46 行

/************************************************ 
  NAME    : MMU.H
  DESC    :
  Revision: 02.28.2002 ver 0.0
 ************************************************/

#ifndef __MMU_H__
#define __MMU_H__
#ifdef __cplusplus
extern "C" {
#endif

#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)

void MMU_DCacheCleanAll(void);
void MMU_DCacheCleanInvalidateAll(void);
void MMU_Init(MMU_Table table[]);
void MMU_SetMTT(U32 vaddrStart, U32 vaddrEnd, U32 paddrStart, int attr);
void ChangeRomCacheStatus(int attr);

#ifdef __cplusplus
}
#endif

#endif /*__MMU_H__*/