arm_mpu.h

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/*
 * Copyright (c) 2017 Linaro Limited.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_MPU_ARM_MPU_H_
#define ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_MPU_ARM_MPU_H_
 
#if defined(CONFIG_CPU_CORTEX_M0PLUS) || \
        defined(CONFIG_CPU_CORTEX_M3) || \
        defined(CONFIG_CPU_CORTEX_M4) || \
        defined(CONFIG_CPU_CORTEX_M7) || \
        defined(CONFIG_CPU_CORTEX_R)
#include <arch/arm/aarch32/mpu/arm_mpu_v7m.h>
#elif defined(CONFIG_CPU_CORTEX_M23) || \
        defined(CONFIG_CPU_CORTEX_M33) || \
        defined(CONFIG_CPU_CORTEX_M55)
#include <arch/arm/aarch32/mpu/arm_mpu_v8m.h>
#else
#error "Unsupported ARM CPU"
#endif
 
#ifndef _ASMLANGUAGE
 
/* Region definition data structure */
struct arm_mpu_region {
        /* Region Base Address */
        uint32_t base;
        /* Region Name */
        const char *name;
#if defined(CONFIG_CPU_CORTEX_R)
        /* Region Size */
        uint32_t size;
#endif
        /* Region Attributes */
        arm_mpu_region_attr_t attr;
};
 
/* MPU configuration data structure */
struct arm_mpu_config {
        /* Number of regions */
        uint32_t num_regions;
        /* Regions */
        const struct arm_mpu_region *mpu_regions;
};
 
#if defined(CONFIG_CPU_CORTEX_R)
#define MPU_REGION_ENTRY(_name, _base, _size, _attr) \
        {\
                .name = _name, \
                .base = _base, \
                .size = _size, \
                .attr = _attr, \
        }
#else
#define MPU_REGION_ENTRY(_name, _base, _attr) \
        {\
                .name = _name, \
                .base = _base, \
                .attr = _attr, \
        }
#endif
 
/* Reference to the MPU configuration.
 *
 * This struct is defined and populated for each SoC (in the SoC definition),
 * and holds the build-time configuration information for the fixed MPU
 * regions enabled during kernel initialization. Dynamic MPU regions (e.g.
 * for Thread Stack, Stack Guards, etc.) are programmed during runtime, thus,
 * not kept here.
 */
extern const struct arm_mpu_config mpu_config;
 
#endif /* _ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_MPU_ARM_MPU_H_ */