www.pudn.com > arm_ucos_2410.rar > mmu.h
/**************************************************************************
* *
* PROJECT : ARM port for UCOS-II *
* *
* MODULE : MMU.h *
* *
* AUTHOR : Michael Anburaj *
* URL : http://geocities.com/michaelanburaj/ *
* EMAIL: michaelanburaj@hotmail.com *
* *
* PROCESSOR : S3c2410x (32 bit ARM920T RISC core from Samsung) *
* *
* IDE : SDT 2.51 & ADS 1.2 *
* *
* DESCRIPTION : *
* External interface & Module configuration header for MMU module. *
* *
**************************************************************************/
#ifndef __MMU_H__
#define __MMU_H__
#include "mmulib.h"
#ifdef __cplusplus
extern "C" {
#endif
/* ********************************************************************* */
/* Module configuration */
/* ********************************************************************* */
/* Interface macro & data definition */
#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)
/* ********************************************************************* */
/* Interface function definition */
/*
*********************************************************************************************
* MMU_Init
*
* Description: This routine is used to initialize the MMU.
*
* Arguments : none.
*
* Return : none.
*
* Note(s) :
*********************************************************************************************
*/
void MMU_Init(void);
/*
*********************************************************************************************
* MMU_SetMTT
*
* Description: This routine sets MMU mapping table for a range for virtual addresses.
*
* Arguments : wVSAddr - Virtual address start.
* wVEAddr - Virtual address end.
* wPSAddr - Physical address start.
* wAttrib - MMU Attribute.
*
* Return : none.
*
* Note(s) :
*********************************************************************************************
*/
void MMU_SetMTT(int wVSAddr,int wVEAddr,int wPSAddr,int wAttrib);
/* ********************************************************************* */
#ifdef __cplusplus
}
#endif
#endif /*__MMU_H__*/