zynq7020+AMP,core1's timer interrupt cant not be trigger

[anson.zhao]

Hi! dear all, There's been a problem lately,when I set -DUSE_AMP=1 for Compiler options in vivado,through Linux by core0 can startup core1,but core1's timer interrupt can not be trigger,when I was close this options, isolated to run core1 and timer interrupt,it would be trigger, but the Linux by core0 can not startup for this way,how can I solve this problem,waiting and Thank you.

[vivozhang]

How did you setup timer in core-1? You have to setup global timer in core-1 before you can use timer interrupt. For your reference, I paste my code here, hope it helps.

/* Interrupt Controller setup */
static int app_gic_initialize(void)
{
	u32 Status;
	XScuGic_Config *IntcConfig;	/* The configuration parameters of the interrupt controller */

	Xil_ExceptionDisable();

	/*
	 * Initialize the interrupt controller driver
	 */
	IntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
	if (NULL == IntcConfig) {
		return XST_FAILURE;
	}

	Status = XScuGic_CfgInitialize(&xInterruptController, IntcConfig,
			IntcConfig->CpuBaseAddress);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}


	ConfigPtr = XScuTimer_LookupConfig(TIMER_DEVICE_ID);
	Status = XScuTimer_CfgInitialize(&Timer, ConfigPtr,
						ConfigPtr->BaseAddr);
	if (Status != XST_SUCCESS) {return XST_FAILURE;	}

	XScuGic_Enable(&xInterruptController, (u16)TIMER_IRPT_INTR);

	/*
	 * Register the interrupt handler to the hardware interrupt handling
	 * logic in the ARM processor.
	 */
	Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT,
			(Xil_ExceptionHandler)XScuGic_InterruptHandler,
			&xInterruptController);

	Xil_ExceptionEnable();

	/* Connect IPI0 Interrupt ID with ISR */
	XScuGic_Connect(&xInterruptController, VRING0_IPI_INTR_VECT,
			(Xil_ExceptionHandler)metal_irq_isr,
			(void *)VRING0_IPI_INTR_VECT);

	/* Connect IPI1 Interrupt ID with ISR */
	XScuGic_Connect(&xInterruptController, VRING1_IPI_INTR_VECT,
			(Xil_ExceptionHandler)metal_irq_isr,
			(void *)VRING1_IPI_INTR_VECT);


	XScuGic_Connect(&xInterruptController, (u16)TIMER_IRPT_INTR,
					(Xil_ExceptionHandler)TimerIntrHandler,
					&Timer);
	XScuTimer_EnableAutoReload(&Timer);
	XScuTimer_LoadTimer(&Timer, (u32)TIMER_LOAD_VALUE);

	return 0;
}

note it is part of the helper.cc file in openAMP framework.

[anson.zhao]

think you for your answer.

Here is my initialize code,can you give me some advice? Think you.

void TimerIntrHandler(void)
{
XScuTimer_ClearInterruptStatus(&Timer);
Isr_125us();
}

void SET_TIM0_FREQ(uint32_t _ulFreq)
{
u8 usPrescaler;
u32 usPeriod;
usPeriod = 333*1000*1000/_ulFreq -1;

XScuTimer_ClearInterruptStatus(&Timer);

//XScuTimer_SetPrescaler(&Timer, usPrescaler);

XScuTimer_LoadTimer(&Timer, usPeriod);
XScuTimer_EnableAutoReload(&Timer); 

XScuTimer_EnableInterrupt(&Timer);//enable interrupt on the timer

XScuTimer_Start(&Timer);
}

void TIM0_Configuration(XScuGic *GicInstancePtr,
XScuTimer *TimerInstancePtr, u16 TimerIntrId)
{
XScuGic_Config *IntcConfig; //GIC config
u32 IntID;

Xil_ExceptionInit();
//initialise the GIC
IntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
XScuGic_CfgInitialize(GicInstancePtr, IntcConfig,
IntcConfig->CpuBaseAddress);

Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)XScuGic_InterruptHandler,//connect to the hardware
GicInstancePtr);

XScuGic_Connect(GicInstancePtr, TimerIntrId,
(Xil_ExceptionHandler)TimerIntrHandler,//set up the timer interrupt
(void *)TimerInstancePtr);

XScuGic_Enable(GicInstancePtr, TimerIntrId);//enable the interrupt for the Timer at GIC
XScuTimer_EnableInterrupt(TimerInstancePtr);//enable interrupt on the timer
Xil_ExceptionEnableMask(XIL_EXCEPTION_IRQ); //Enable interrupts in the Processor.
}

void InitPrivateTimer(void)
{
int xStatus;
XScuTimer_Config *TMRConfigPtr;//TM

TMRConfigPtr = XScuTimer_LookupConfig(TIMER_DEVICE_ID);
XScuTimer_CfgInitialize(&Timer, TMRConfigPtr,TMRConfigPtr->BaseAddr);

TIM0_Configuration(&Intc,&Timer,TIMER_IRPT_INTR);

SET_TIM0_FREQ(8000); 
}