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/*
* 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);
}
}
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