rt-thread/bsp/stm32f7-disco/drivers/drv_cache.c

/*
 * 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 <rthw.h>
#include <stm32f7xx.h>
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);
    }
}