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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-03-25 quanzhao the first version
*/
#ifndef __MMU_H_
#define __MMU_H_
#include <rtthread.h>
#define DESC_SEC (0x2)
#define MEMWBWA ((1<<12)|(3<<2)) /* write back, write allocate */
#define MEMWB (3<<2) /* write back, no write allocate */
#define MEMWT (2<<2) /* write through, no write allocate */
#define SHAREDEVICE (1<<2) /* shared device */
#define STRONGORDER (0<<2) /* strong ordered */
#define XN (1<<4) /* eXecute Never */
#define AP_RW (3<<10) /* supervisor=RW, user=RW */
#define AP_RO (2<<10) /* supervisor=RW, user=RO */
#define SHARED (1<<16) /* shareable */
#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)
/* device mapping type */
#define DEVICE_MEM (SHARED|AP_RW|DOMAIN0|SHAREDEVICE|DESC_SEC|XN)
/* normal memory mapping type */
#define NORMAL_MEM (SHARED|AP_RW|DOMAIN0|MEMWBWA|DESC_SEC)
struct mem_desc
{
rt_uint32_t vaddr_start;
rt_uint32_t vaddr_end;
rt_uint32_t paddr_start;
rt_uint32_t attr;
};
#endif
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