| /* |
| * Copyright (c) 2017 Synopsys. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| #ifndef _ARC_CORE_MPU_H_ |
| #define _ARC_CORE_MPU_H_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * The defines below represent the region types. The MPU driver is responsible |
| * to allocate the region accordingly to the type and set the correct |
| * attributes. |
| * |
| * Each MPU is different and has a different set of attributes, hence instead |
| * of having the attributes at this level the arm_mpu_core defines the intent |
| * types. |
| * An intent type (i.e. THREAD_STACK_GUARD) can correspond to a different set |
| * of operations and attributes for each MPU and it is responsibility of the |
| * MPU driver to select the correct ones. |
| * |
| * The intent based configuration can't fail hence at this level no error |
| * is returned by the configuration functions. |
| * If one of the operations corresponding to an intent fails the error has to |
| * be managed inside the MPU driver and not escalated. |
| */ |
| /* Thread Stack Region Intent Type */ |
| #define THREAD_STACK_REGION 0x1 |
| #define THREAD_STACK_GUARD_REGION 0x2 |
| |
| #if defined(CONFIG_ARC_CORE_MPU) |
| /* ARC Core MPU Driver API */ |
| |
| /* |
| * This API has to be implemented by all the MPU drivers that have |
| * ARC_CORE_MPU support. |
| */ |
| |
| /** |
| * @brief enable the MPU |
| */ |
| void arc_core_mpu_enable(void); |
| |
| /** |
| * @brief disable the MPU |
| */ |
| void arc_core_mpu_disable(void); |
| |
| /* |
| * Before configure the MPU regions, mpu should be disabled |
| */ |
| /** |
| * @brief configure the default region |
| * |
| * @param region_attr region attribute of default region |
| */ |
| void arc_core_mpu_default(u32_t region_attr); |
| |
| /** |
| * @brief configure the mpu region |
| * |
| * @param index MPU region index |
| * @param base base address |
| * @param region_attr region attribute |
| */ |
| void arc_core_mpu_region(u32_t index, u32_t base, u32_t region_attr); |
| |
| /** |
| * @brief configure the base address and size for an MPU region |
| * |
| * @param type MPU region type |
| * @param base base address in RAM |
| * @param size size of the region |
| */ |
| void arc_core_mpu_configure(u8_t type, u32_t base, u32_t size); |
| #endif /* CONFIG_ARC_CORE_MPU */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ARC_CORE_MPU_H_ */ |