main_cf.c

基于S3C2440A的CF卡功能实现(测试已通过) 基于ADS的测试,有助于理解如何支持S3C2440A的CF卡功能

#define	GLOBAL_CLK		1
/*
*********************************************************
*  					 头文件
*********************************************************
*/
#include <stdlib.h>
#include <string.h>

#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
/*
*********************************************************
*  					  常量
*********************************************************
*/
extern void CF_Card_Test( void );
/*
*********************************************************
*  					  变量
*********************************************************
*/
void * func_uart_test[][2]=
{	
//iic
	(void *)CF_Card_Test, 			"Test CF Card     ",
	0,0
};

/*
*********************************************************
* 函数介绍：本函数被使用来做测试cf Card/ide的功能。
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void Main(void)
{	    
    int i;
    U8 key;
	U32 mpll_val = 0 ;

    Port_Init();  //端口初始化
    Isr_Init();   //中断初始化

	i = 2 ;	//don't use 100M!
		//boot_params.cpu_clk.val = 3;
	switch ( i ) {
	case 0:	//200
		key = 12;
		mpll_val = (92<<12)|(4<<4)|(1);
		break;
	case 1:	//300
		key = 13;
		mpll_val = (67<<12)|(1<<4)|(1);
		break;
	case 2:	//400
		key = 14;
		mpll_val = (92<<12)|(1<<4)|(1);
		break;
	case 3:	//440!!!
		key = 14;
		mpll_val = (102<<12)|(1<<4)|(1);
		break;
	default:
		key = 14;
		mpll_val = (92<<12)|(1<<4)|(1);
		break;
	}
	
	//init FCLK=400M, so change MPLL first
	ChangeMPllValue((mpll_val>>12)&0xff, (mpll_val>>4)&0x3f, mpll_val&3);
	ChangeClockDivider(key, 12);
	cal_cpu_bus_clk();
    
    Clk0_Disable();
	Clk1_Disable();
    Uart_Init(0,115200);  //串口初始化 波特率为115200
    Uart_Select(0);  //选者串口0
	
	Uart_Printf("\n======  cf Card Test start ======\n");
	
	while(1)
	{
		i=0;
		Uart_Printf("\n\n");
		while(1)
		{   //display menu
			Uart_Printf("%2d:%s",i,func_uart_test[i][1]);
			i++;
			if((int)(func_uart_test[i][0])==0)
			{
				Uart_Printf("\n");
				break;
			}
			if((i%4)==0)
			Uart_Printf("\n");
		}
		
		Uart_Printf("\nPress Enter key to exit : ");
		i = Uart_GetIntNum();
		if(i==-1) break;		// return.
		if(i>=0 && i<7 )	// select and execute...
		( (void (*)(void)) (func_uart_test[i][0]) )();
	}
	
	Uart_Printf("\n====== cf Card Test end ======\n");
}