blob: 66a369e952ff40ee316eac0d627dde3f4e15b786 [file] [log] [blame]
/*
* Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef EMI_MPU_H
#define EMI_MPU_H
#include <emi_mpu_priv.h>
#include <platform_def.h>
#define NO_PROTECTION (0)
#define SEC_RW (1)
#define SEC_RW_NSEC_R (2)
#define SEC_RW_NSEC_W (3)
#define SEC_R_NSEC_R (4)
#define FORBIDDEN (5)
#define SEC_R_NSEC_RW (6)
#define LOCK (1)
#define UNLOCK (0)
#if (EMI_MPU_DGROUP_NUM == 1)
#define SET_ACCESS_PERMISSION(apc_ary, lock, d7, d6, d5, d4, d3, d2, d1, d0) \
do { \
apc_ary[1] = 0; \
apc_ary[0] = \
(((unsigned int) d7) << 21) | (((unsigned int) d6) << 18) | \
(((unsigned int) d5) << 15) | (((unsigned int) d4) << 12) | \
(((unsigned int) d3) << 9) | (((unsigned int) d2) << 6) | \
(((unsigned int) d1) << 3) | ((unsigned int) d0) | \
((unsigned int) lock << 31); \
} while (0)
#elif (EMI_MPU_DGROUP_NUM == 2)
#define SET_ACCESS_PERMISSION(apc_ary, lock, d15, d14, d13, d12, d11, d10, \
d9, d8, d7, d6, d5, d4, d3, d2, d1, d0) \
do { \
apc_ary[1] = \
(((unsigned int) d15) << 21) | (((unsigned int) d14) << 18) | \
(((unsigned int) d13) << 15) | (((unsigned int) d12) << 12) | \
(((unsigned int) d11) << 9) | (((unsigned int) d10) << 6) | \
(((unsigned int) d9) << 3) | ((unsigned int) d8); \
apc_ary[0] = \
(((unsigned int) d7) << 21) | (((unsigned int) d6) << 18) | \
(((unsigned int) d5) << 15) | (((unsigned int) d4) << 12) | \
(((unsigned int) d3) << 9) | (((unsigned int) d2) << 6) | \
(((unsigned int) d1) << 3) | ((unsigned int) d0) | \
((unsigned int) lock << 31); \
} while (0)
#endif
struct emi_region_info_t {
unsigned long long start;
unsigned long long end;
unsigned int region;
unsigned int apc[EMI_MPU_DGROUP_NUM];
};
int emi_mpu_init(void);
int emi_mpu_set_protection(struct emi_region_info_t *region_info);
void set_emi_mpu_regions(void);
#endif