/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-30 lizhirui first version */ #include <rthw.h> #include <rtthread.h> #include <riscv.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include "riscv_mmu.h" void mmu_enable_user_page_access(void) { set_csr(sstatus, SSTATUS_SUM); } void mmu_disable_user_page_access(void) { clear_csr(sstatus, SSTATUS_SUM); }