/* * File      : cpu.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006, RT-Thread Develop Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://openlab.rt-thread.com/license/LICENSE * * Change Logs: * Date           Author       Notes * 2006-03-13     Bernard      first version */#include <rtthread.h>#include "s3c4510.h"/** * @addtogroup S3C4510 *//*@{*//** * This function will enable I-Cache of CPU * */void rt_hw_cpu_icache_enable(){	rt_base_t reg;	volatile int i;	/* flush cache before enable */	rt_uint32_t *tagram = (rt_uint32_t *)S3C4510_SRAM_ADDR;	SYSCFG &= ~(1<<1);	/* Disable cache */	for(i=0; i < 256; i++)	{		*tagram = 0x00000000;		tagram += 1;	}	/*		Enable chache	*/	reg = SYSCFG;	reg |= (1 << 1);	SYSCFG = reg;}/** * This function will disable I-Cache of CPU * */void rt_hw_cpu_icache_disable(){	rt_base_t reg;	reg = SYSCFG;	reg &= ~(1<<1);	SYSCFG = reg;}/** * this function will get the status of I-Cache * */rt_base_t rt_hw_cpu_icache_status(){	return 0;}/** * this function will enable D-Cache of CPU * */void rt_hw_cpu_dcache_enable(){	rt_hw_cpu_icache_enable();}/** * this function will disable D-Cache of CPU * */void rt_hw_cpu_dcache_disable(){	rt_hw_cpu_icache_disable();}/** * this function will get the status of D-Cache * */rt_base_t rt_hw_cpu_dcache_status(){	return rt_hw_cpu_icache_status();}/** * this function will reset CPU * */void rt_hw_cpu_reset(){}/** * this function will shutdown CPU * */void rt_hw_cpu_shutdown(){	rt_kprintf("shutdown...\n");	while (1);}/*@}*/