/* * 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 * 2006-09-06     XuXinming    first version */#include <rtthread.h>#include "s3c44b0.h"/** * @addtogroup S3C44B0 *//*@{*//** * This function will enable I-Cache of CPU * */void rt_hw_cpu_icache_enable(){	rt_base_t reg;	volatile int i;	/* flush cycle */	for(i = 0x10002000; i < 0x10004800; i+=16)	{		*((int *)i)=0x0;	}	/*	 *	Init cache	 *	Non-cacheable area (everything outside RAM)	 *	0x0000:0000 - 0x0C00:0000	 */	NCACHBE0 = 0xC0000000;	NCACHBE1 = 0x00000000;	/*		Enable chache	*/	reg = SYSCFG;	reg |= 0x00000006; /* 8kB */	SYSCFG = reg;}/** * This function will disable I-Cache of CPU * */void rt_hw_cpu_icache_disable(){	rt_base_t reg;	reg = SYSCFG;	reg &= ~0x00000006; /* 8kB */	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);}/*@}*/