| /* |
| * Copyright (c) 2017 Synopsys. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <device.h> |
| #include <init.h> |
| #include <kernel.h> |
| #include <soc.h> |
| #include <arch/arc/v2/mpu/arc_core_mpu.h> |
| |
| /* |
| * @brief Configure MPU for the thread |
| * |
| * This function configures per thread memory map reprogramming the MPU. |
| * |
| * @param thread thread info data structure. |
| */ |
| void configure_mpu_thread(struct k_thread *thread) |
| { |
| arc_core_mpu_disable(); |
| arc_core_mpu_configure_thread(thread); |
| arc_core_mpu_enable(); |
| } |
| |
| #if defined(CONFIG_USERSPACE) |
| |
| int z_arch_mem_domain_max_partitions_get(void) |
| { |
| return arc_core_mpu_get_max_domain_partition_regions(); |
| } |
| |
| /* |
| * Reset MPU region for a single memory partition |
| */ |
| void z_arch_mem_domain_partition_remove(struct k_mem_domain *domain, |
| u32_t partition_id) |
| { |
| arc_core_mpu_disable(); |
| arc_core_mpu_remove_mem_partition(domain, partition_id); |
| arc_core_mpu_enable(); |
| } |
| |
| /* |
| * Configure MPU memory domain |
| */ |
| void z_arch_mem_domain_configure(struct k_thread *thread) |
| { |
| arc_core_mpu_disable(); |
| arc_core_mpu_configure_mem_domain(thread); |
| arc_core_mpu_enable(); |
| } |
| |
| /* |
| * Destroy MPU regions for the mem domain |
| */ |
| void z_arch_mem_domain_destroy(struct k_mem_domain *domain) |
| { |
| arc_core_mpu_disable(); |
| arc_core_mpu_remove_mem_domain(domain); |
| arc_core_mpu_enable(); |
| } |
| |
| void _arch_mem_domain_partition_add(struct k_mem_domain *domain, |
| u32_t partition_id) |
| { |
| /* No-op on this architecture */ |
| } |
| |
| /* |
| * Validate the given buffer is user accessible or not |
| */ |
| int z_arch_buffer_validate(void *addr, size_t size, int write) |
| { |
| return arc_core_mpu_buffer_validate(addr, size, write); |
| } |
| |
| #endif |