49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
|
|
* Copyright (c) 2006-2018, 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 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|MEMWB|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
|