idle.c

三星给予ARM920T内核的S3C2413的demo版本

/*****************************************
  NAME: idle.c
  DESC: IDLE mode test
  HISTORY:
  03.23.2002:purnnamu: first release for 2410
  06.02.2003:DonGo: Modified for 2442
 *****************************************/

#include "def.h"
#include "option.h"
#include "2413addr.h"
#include "Console.h"
#include "System.h" 
#include "MMUCache.h"
#include "idle.h"


#define TESTYEAR 	(0x00)
#define TESTMONTH 	(0x12)
#define TESTDATE        (0x31)
#define TESTDAY         (0x06)  // SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7   
#define TESTHOUR	(0x23)
#define TESTMIN		(0x59)
#define TESTSEC		(0x59)

#define TESTYEAR2	(0x01)
#define TESTMONTH2 	(0x01)
#define TESTDATE2	(0x01)
#define TESTDAY2	(0x07)  // SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7   
#define TESTHOUR2	(0x00)
#define TESTMIN2	(0x00)
#define TESTSEC2	(0x00)

unsigned int eint;


void SetAlarmWakeUp(void)
{
	rRTCCON = 0x1;	// R/W enable, 1/32768, Normal(merge), No reset

	rBCDYEAR = TESTYEAR;
	rBCDMON  = TESTMONTH;
	rBCDDAY  = TESTDAY;	// SUN:1 MON:2 TUE:3 WED:4 THU:5 FRI:6 SAT:7
	rBCDDATE = TESTDATE;
	rBCDHOUR = TESTHOUR;
	rBCDMIN  = TESTMIN;
	rBCDSEC  = TESTSEC;
	
	rALMYEAR=TESTYEAR2 ;
	rALMMON =TESTMONTH2;
	rALMDATE=TESTDATE2  ;
	rALMHOUR=TESTHOUR2 ;
	rALMMIN =TESTMIN2  ;
	rALMSEC =TESTSEC2+0x5;

	rRTCALM=0x7f;

	rRTCCON=0x0;   // R/W disable, 1/32768, Normal(merge), No reset
}



static void __irq Eint0Int(void)
 {
    rEINTPEND |= (1<<0);
    ClearPending(BIT_EINT0);
    printf("EINT0 interrupt is occurred for IDLE wake-up.\n");
}

static void __irq Eint11Int(void)
 {
	rPWRMODECON &=~(1<<17); 
    rEINTPEND |= (1<<11);
    rEINTMASK |= ((1<<11)|(1<<0));
    ClearPending(BIT_EINT8_23);
    printf("EINT11 interrupt is occurred for IDLE wake-up.\n");
    eint =1 ;
}

static void __irq AlarmInt(void)
{
    ClearPending(BIT_RTC);
    printf("ALARM interrupt is occurred for IDLE wake-up.\n");
        SetAlarmWakeUp();
    rRTCCON = 0x0;	// R/W disable, but interrupt will be generated.

}


static volatile int t0cnt,t1cnt;

static void __irq Timer0Int(void)
//Timer0 interrupt will be used to test the IDLE mode hard	
{
    ClearPending(BIT_TIMER0);
    t0cnt++;
}

static void __irq Timer1Int(void)
//Timer1 interrupt will be used to test the IDLE mode hard	
{
    ClearPending(BIT_TIMER1);
    t1cnt++;
}




void Eint_test(void)
{

		eint = 0;
	  printf("S3C2413  EINT0 or EINT11. test\n");

    rGPFDN |= (1<<0);
    rGPFCON=rGPFCON & ~(3<<0)|(2<<0); //PF0=EINT0
    rEXTINT0=rEXTINT0&(7<<0)|(0x2<<0); //EINT0=falling edge triggered

    rGPGDN |= (1<<3);
    rGPGCON=rGPGCON & ~(3<<6)|(2<<6); //PG3=EINT11
    rEXTINT1=rEXTINT1&(7<<12)|(0x6<<12); //EINT11=falling edge triggered

    
    pISR_EINT0=(U32)Eint0Int;
    pISR_EINT8_23=(U32)Eint11Int;
    
		// clear pending interrupt1
		
	rEINTPEND |= ((1<<3)|(1<<0));
    rSRCPND = BIT_EINT0|BIT_RTC|BIT_EINT8_23; //to clear the previous pending states
    rINTPND = BIT_EINT0|BIT_RTC|BIT_EINT8_23;
        
    rEINTMASK &= ~((1<<11)|(1<<0));
    rINTMSK &=~(BIT_EINT0|BIT_RTC|BIT_EINT8_23);
    
    while(eint !=1);
	
}

/**********************
 *   IDLE mode test   *
 **********************/

void Test_IdleMode(void)
{
    int i;
    int extintMode;

    printf("[IDLE Mode Test]\n");
    printf("After 10 seconds, S3C2413 will wake up by RTC alarm interrupt.\n");
    printf("S3C2413 will also wake up by EINT0 or EINT11.\n");

    rGPFDN |= (1<<0);
    rGPFCON=rGPFCON & ~(3<<0)|(2<<0); //PF0=EINT0
    rEXTINT0=rEXTINT0&(7<<0)|(0x2<<0); //EINT0=falling edge triggered

    rGPGDN |= (1<<3);
    rGPGCON=rGPGCON & ~(3<<6)|(2<<6); //PG3=EINT11
    rEXTINT1=rEXTINT1&(7<<12)|(0x6<<12); //EINT11=falling edge triggered

    
    pISR_EINT0=(U32)Eint0Int;
    pISR_EINT8_23=(U32)Eint11Int;
    pISR_RTC=(U32)AlarmInt;

	// clear pending interrupt
	rEINTPEND |= ((1<<3)|(1<<0));
    rSRCPND = BIT_EINT0|BIT_RTC|BIT_EINT8_23; //to clear the previous pending states
    rINTPND = BIT_EINT0|BIT_RTC|BIT_EINT8_23;
        
    rEINTMASK &= ~((1<<11)|(1<<0));
    rINTMSK &=~(BIT_EINT0|BIT_RTC|BIT_EINT8_23);

    SetAlarmWakeUp();
    rRTCCON = 0x0;	// R/W disable, but interrupt will be generated.


	//***Enter Idle mode *** : select MMU_IDLE or PWRMODECON//
	//rPWRCFG 	|=(1<<6);	//STADNBYWFI : 00:ignore, 01:idle, 10:stop, 11:sleep mode 
	//MMU_WaitForInterrupt();
	rPWRMODECON |=(1<<17);  //enter IDLE mode.
    
    //***Exit Idle mode ***//

    //for(i=0;i<10;i++);   
        //wait until S3C2400X enters IDLE mode.	
        //wait EINT0 interrupt or RTC alarm interrupt

    rPWRMODECON &=~(1<<17);      
    //turn-off IDLE bit. IDLE bit should be turned off after wake-up.
   
    printf("Return to Normal Mode.\n");
    
    	printf("wake-up= %08x\n", rWKUPSTAT);

	//Check wake-up source
	if( rWKUPSTAT & (1<<0) )		// EINT?
	{
		printf("\n__ Wake-up by EINT\n");
		rWKUPSTAT |= (1<<0);
	}
	else if( rWKUPSTAT & (1<<1) )	// RTC?
	{
		printf("\n__ Wake-up by RTC\n");
		rWKUPSTAT |= (1<<1);
	}
	else if( rWKUPSTAT & (1<<5) )	// BATFLT?
	{
		printf("\n__ Wake-up by nBATFLT\n");
		rWKUPSTAT |= (1<<5);
	}


    rINTMSK=BIT_ALLMSK;
}



void Test_IdleModeHard(void)
{
    int i,j;

       
    printf("[IDLE Mode Hard Test with Timer0]\n");
    printf("S3C2413 will also wake up by EINT0 falling edge.\n");

    Uart_TxEmpty(1);    //Wait until UART0 Tx buffer empty.

    rGPFCON=rGPFCON & ~(3<<0)|(2<<0); //PF0=EINT0
    rEXTINT0=rEXTINT0&(7<<0)|(0x2<<0); //EINT0=falling edge triggered
    
    rSRCPND = BIT_EINT0;
    rINTPND = BIT_EINT0;

    t0cnt=0;t1cnt=0;

    pISR_TIMER0=(U32)Timer0Int; 
    pISR_TIMER1=(U32)Timer1Int;
    pISR_EINT0=(U32)Eint0Int;

    rTCFG0=0x24;		//PRESC01=1,PRESC234=1
    rTCFG1=0x0; 	//TIMER0,1,2,3,4,5= 1/2    
    rTCNTB0=1000;	
    rTCNTB1=2570;
    rTCON=0xa0a;	//T0,T1=manualUpdate,interval mode
    rTCON=0x909;	//Start T0,T1.
    //rTCON=0x00a;
    //rTCON=0x009;
  
    rINTMSK=~(BIT_EINT0|BIT_TIMER0|BIT_TIMER1);
        
    for(i=0;i<100000;i++)
    {
		//***Enter Idle mode ***//
		//rPWRCFG 	|=(1<<6);	//STADNBYWFI : 00:ignore, 01:idle, 10:stop, 11:sleep mode 
		//MMU_WaitForInterrupt();
		rPWRMODECON |=(1<<17);  //enter IDLE mode.
    
    	//***Exit Idle mode ***//

    	//for(i=0;i<10;i++);   
        	//wait until S3C2400X enters IDLE mode.	
        	//wait EINT0 interrupt or RTC alarm interrupt

    	rPWRMODECON &=~(1<<17);      
    	//turn-off IDLE bit. IDLE bit should be turned off after wake-up.

    	if(i%100==0)printf("#");
    }

    rTCON=0x0; //turn the timer off

    rINTMSK=BIT_ALLMSK;
    
    printf("\nt0cnt=%d,t1cnt=%d(t0cnt+t1cnt>=10000)\n",t0cnt,t1cnt);
    printf("Return to Normal Mode.\n");
}


/*********************
 * MMU IDLE mode test *
 *********************/

void Test_MMUIdleMode(void)
{
    int i;
    int extintMode;

    //MMU_SetAsyncBusMode(); //ARM920T should be in the async. Bus mode.

    printf("[MMU IDLE Mode Test]\n");
    printf("This routine tests MMU registser7:Wait for interrupt function.\n");
    printf("After 10 seconds, S3C2413 will wake up by RTC alarm interrupt.\n");
    printf("S3C2413 will also wake up by EINT0.\n");
    //Uart_TxEmpty(1);    //Wait until UART0 Tx buffer empty.

    rGPFCON=rGPFCON & ~(3<<0)|(2<<0); //PF0=EINT0
    rEXTINT0=rEXTINT0&(7<<0)|(0x1<<0); //EINT0=falling edge triggered
    
    pISR_EINT0=(U32)Eint0Int;
    pISR_RTC=(U32)AlarmInt;

    rSRCPND = BIT_EINT0|BIT_RTC; //to clear the previous pending states
    rINTPND = BIT_EINT0|BIT_RTC;
    
    rINTMSK=~(BIT_EINT0|BIT_RTC);
    rINTMSK=~(BIT_RTC);
    rINTMSK=BIT_ALLMSK;

    SetAlarmWakeUp();
    rRTCCON = 0x0;	// R/W disable, but interrupt will be generated.


	rPWRCFG 	|=(1<<6);	//STADNBYWFI : 00:ignore, 01:idle, 10:stop, 11:sleep mode 
    MMU_WaitForInterrupt();
     
    //wait until S3C2400X enters IDLE mode.	
    //wait EINT0 interrupt or RTC alarm interrupt
    for(i=0;i<10;i++);   

    printf("Return to Normal Mode.\n");

    rINTMSK=BIT_ALLMSK;
}