//------------------------------------------------------------------------------
//
// Function: OALCPUIdle
//
// This Idle function implements a busy idle. It is intend to be used only
// in development (when CPU doesn't support idle mode it is better to stub
// OEMIdle function instead use this busy loop). The busy wait is cleared by
// an interrupt from interrupt handler setting the g_oalLastSysIntr.
//
//
VOID OALCPUIdle()
{
#if (BSP_TYPE == BSP_SMDK2443)
volatile S3C2450_CLKPWR_REG *s2450CLKPWR = (S3C2450_CLKPWR_REG *)OALPAtoVA(S3C2450_BASE_REG_PA_CLOCK_POWER, FALSE);
volatile S3C2450_INTR_REG *s2450INTR = (S3C2450_INTR_REG *)OALPAtoVA(S3C2450_BASE_REG_PA_INTR, FALSE);
volatile S3C2450_IOPORT_REG *s2450IOPORT = (S3C2450_IOPORT_REG *)OALPAtoVA(S3C2450_BASE_REG_PA_IOPORT, FALSE);
UINT32 sysIntr;
s2450IOPORT->GPFDAT |= ( 1<< 5); // GPF5 output data, turn LED on
s2450CLKPWR->PWRMODE |= (1 << 17);
MMU_WaitForInterrupt();
s2450CLKPWR->PWRMODE &= ~(1 << 17);
s2450IOPORT->GPFDAT &= ~(1 << 5); // GPF5 output data, turn LED off
if(g_pIntrRegs->SRCPND & (1<< IRQ_TIMER4))
sysIntr = OALTimerIntrHandler();
#elif (BSP_TYPE == BSP_SMDK2450)
#ifndef DVS_EN
//[david.modify] 2008-09-06 19:01
//GPC0 在开发板上用做LED灯指示
//但在我们4.3INCH PND的项目上用做了LCD_ON信号给LCD供电
// 一定要为高
#if 0
g_pPortRegs->GPCCON &= ~(3<< 0);
g_pPortRegs->GPCCON |= ( 1<< 0);
g_pPortRegs->GPCDAT |= ( 1<< 0);
#endif
#endif
g_pClkpwrRegs->PWRCFG |= (0x1<<17);
g_pClkpwrRegs->PWRCFG &=~(0x3<<5);
MMU_WaitForInterrupt();
g_pClkpwrRegs->PWRCFG &= ~(0x1<<17);
if((g_pIntrRegs->SRCPND1 & (1<<IRQFORTIMER)) != 0)
{
OALTimerIntrHandler();
}
#ifndef DVS_EN
#if 0
g_pPortRegs->GPCDAT &= ~(1 << 0);
#endif
#endif
#endif
}
void Test_MMUIdleMode(void)
{
int i;
// int extintMode;
MMU_SetAsyncBusMode(); //ARM920T should be in the async. Bus mode.
Uart_Printf("[MMU IDLE Mode Test]\n");
Uart_Printf("This routine tests MMU registser7:Wait for interrupt function.\n");
Uart_Printf("After 10 seconds, S3C2440 will wake up by RTC alarm interrupt.\n");
Uart_Printf("S3C2440 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)|(0x2<<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.
MMU_WaitForInterrupt();
//wait until S3C2400X enters IDLE mode.
//wait EINT0 interrupt or RTC alarm interrupt
for(i=0;i<10;i++);
Uart_Printf("Return to Normal Mode.\n");
rINTMSK=BIT_ALLMSK;
}