/* * File : drv_cache.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Change Logs: * Date Author Notes * 2018-05-17 ZYH first implementation */ #include #include void rt_hw_cpu_icache_enable(void) { SCB_EnableICache(); } void rt_hw_cpu_icache_disable(void) { SCB_DisableICache(); } rt_base_t rt_hw_cpu_icache_status(void) { return 0; } void rt_hw_cpu_icache_ops(int ops, void *addr, int size) { UNUSED(addr); UNUSED(size); if (ops & RT_HW_CACHE_INVALIDATE) { SCB_InvalidateICache(); } } void rt_hw_cpu_dcache_enable(void) { SCB_EnableDCache(); } void rt_hw_cpu_dcache_disable(void) { SCB_DisableDCache(); } rt_base_t rt_hw_cpu_dcache_status(void) { return 0; } void rt_hw_cpu_dcache_ops(int ops, void *addr, int size) { if (ops & (RT_HW_CACHE_FLUSH | RT_HW_CACHE_INVALIDATE)) { SCB_CleanInvalidateDCache_by_Addr(addr, size); } else if (ops & RT_HW_CACHE_FLUSH) { SCB_CleanDCache_by_Addr(addr, size); } else if (ops & RT_HW_CACHE_INVALIDATE) { SCB_InvalidateDCache_by_Addr(addr, size); } else { RT_ASSERT(0); } }