/*
---------------------------------------------------------------------------------------------------------
*********************************************************************************************************
** 文件名称 ：	sys_init.c
** 功能说明 ：	S3C2410硬件初始化软件包。
*********************************************************************************************************
---------------------------------------------------------------------------------------------------------
*/

#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>

#include "..\inc\2410lib.h"

/* 定义控制信号全局变量 */
int nCNT;															

/* 用于调试的函数声明 */
void break_point(void);
void debug_undef(void);
void debug_swi(void);
void debug_abort(void);
void debug_fiq(void);

/*
**********************************************************************************************************
** 函数名称：break_point()
** 函数功能：当产生断点异常时，向串口输出异常的状态。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void break_point(void)
{
	int i;	
	char m = 200;
	uart_printf("!!!Enter break point.");	

	rGPFCON=0x5500;                  					/* PORTF7/6/5/4 OUTPUT					*/
	rGPFUP=0;                        				/* PULL-UP ENABLE						*/ 
	while(m) {
		rGPFDAT=0;
		beep(1);
		for(i=0;i<20000;i++);
		rGPFDAT=0xF0;
		beep(0);
		for(i=0;i<20000;i++);		
		m--;
	}
}

/*
**********************************************************************************************************
** 函数名称：debug_undef()
** 函数功能：当产生未定义异常时，向串口输出异常的状态。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void debug_undef(void)
{
	uart_printf("!!!Enter UNDEFINED exception. %d\r\n", nCNT+=1);	
	break_point();
}

/*
**********************************************************************************************************
** 函数名称：debug_swi()
** 函数功能：当产生SWI调用时，向串口输出异常的状态。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void debug_swi(void)
{
	uart_printf("!!!Enter SWI exception. %d\r\n", nCNT+=1);	
	break_point();
}

/*
**********************************************************************************************************
** 函数名称：debug_abort_d()
** 函数功能：当产生取数据异常时，向串口输出异常的状态。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void debug_abort_d(void)
{
	uart_printf("!!!Enter Data ABORT exception. %d\r\n", nCNT+=1);	
	break_point();
}

/*
**********************************************************************************************************
** 函数名称：debug_abort_p()
** 函数功能：当产生预取指异常时，向串口输出异常的状态。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void debug_abort_p(void)
{
    uart_printf("!!!Enter Prefetch ABORT exception. %d\r\n", nCNT+=1);	
    break_point();
}

/*
**********************************************************************************************************
** 函数名称：debug_fiq()
** 函数功能：当产生快中断异常时，向串口输出异常的状态。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void debug_fiq(void)
{
	uart_printf("!!!Enter FIQ exception. %d\r\n", nCNT+=1);	
	break_point();
}

/*
**********************************************************************************************************
** 函数名称：interrupts_init()
** 函数功能：初始化中断设置。
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void interrupts_init(void)
{
    rINTMOD     = 0x0;										/* 设置所有中断模式为IRQ 	*/
    rSRCPND     = rSRCPND;									/* 清除所有中断 			*/
    rINTPND     = rINTPND;									/* 清除所有中断 			*/
    rINTMSK     = BIT_ALLMSK;             					/* 置位所有中断			*/
    rINTSUBMSK  = BIT_SUB_ALLMSK;          					/* 置位所有子中断			*/

	/* External interrupt will be falling edge triggered. */
    rEXTINT0 = 0x22222222;									/* EINT[7:0]				*/
    rEXTINT1 = 0x22222222;    								/* EINT[15:8]				*/
    rEXTINT2 = 0x22222222;    								/* EINT[23:16]			*/

	pISR_UNDEF     	= (unsigned) debug_undef;
	pISR_SWI       	= (unsigned) debug_swi;
	pISR_PABORT    	= (unsigned) debug_abort_d;
	pISR_DABORT    	= (unsigned) debug_abort_d;

	pISR_FIQ       	= (unsigned) debug_fiq;

	pISR_EINT0      = (unsigned) break_point;    
	pISR_EINT1     	= (unsigned) break_point;
	pISR_EINT2     	= (unsigned) break_point;
	pISR_EINT3     	= (unsigned) break_point;
	pISR_EINT4_7   	= (unsigned) break_point;
	pISR_EINT8_23  	= (unsigned) break_point;
	pISR_NOTUSED6  	= (unsigned) break_point;
	pISR_BAT_FLT   	= (unsigned) break_point;
	pISR_TICK      	= (unsigned) break_point;
	pISR_WDT       	= (unsigned) break_point;
	pISR_TIMER0    	= (unsigned) break_point;
	pISR_TIMER1    	= (unsigned) break_point;
	pISR_TIMER2    	= (unsigned) break_point;
	pISR_TIMER3    	= (unsigned) break_point;
	pISR_TIMER4    	= (unsigned) break_point;
	pISR_UART2     	= (unsigned) break_point;
	pISR_LCD       	= (unsigned) break_point;
	pISR_DMA0      	= (unsigned) break_point;
	pISR_DMA1      	= (unsigned) break_point;
	pISR_DMA2      	= (unsigned) break_point;
	pISR_DMA3      	= (unsigned) break_point;
	pISR_SDI       	= (unsigned) break_point;
	pISR_SPI0      	= (unsigned) break_point;
	pISR_UART1     	= (unsigned) break_point;
	pISR_NOTUSED24 	= (unsigned) break_point;
	pISR_USBD      	= (unsigned) break_point;
    pISR_USBH      	= (unsigned) break_point;
    pISR_IIC       	= (unsigned) break_point;
    pISR_UART0     	= (unsigned) break_point;
    pISR_SPI1      	= (unsigned) break_point;
    pISR_RTC       	= (unsigned) break_point;
    pISR_ADC       	= (unsigned) break_point;
    pISR_ADC       	= (unsigned) break_point;
                
}


/*
*********************************************************************************************************
** 函数名称：sys_init()
** 函数功能：初始化中断、端口和UART
** 入口参数：无
** 出口参数：无
*********************************************************************************************************
*/
void sys_init()
{
	change_clock_divider(1,1);									/* 1:2:4					*/
	change_value_MPLL(M_MDIV,M_PDIV,M_SDIV);						/* Fin=12MHz FCLK=202.8MHz	*/
	delay(0);										
	port_init();
	beep(1);
	interrupts_init();
	uart_init(PCLK, 115200, UART0);
	uart_init(PCLK, 115200, UART1);
#ifdef CLK124_200M
	change_value_MPLL(88,1,1);									/* Fin=12MHz FCLK=192MHz	*/
	uart_init(192000000/4, 115200, UART0);
	uart_init(192000000/4, 115200, UART1);
#endif
	
	uart_select(UART0);
	uart_printf ("\n boot success...\n\n");
	delay(500);
	beep(0);
}