ckinit.c File Reference

Clock Tick Device Driver. More...

#include <bsp.h>
#include <bspopts.h>
#include <rtems/sysinit.h>
#include <rtems/timecounter.h>
#include <rtems/score/sparcimpl.h>
#include "../../../shared/dev/clock/clockimpl.h"

Macros
#define	LEON2_TIMER_1_FREQUENCY   1000000
#define	CLOCK_VECTOR   LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER1 )
#define	Clock_driver_support_install_isr(_new)    set_vector( _new, CLOCK_VECTOR, 1 )
#define	Clock_driver_support_at_tick()   leon2_clock_at_tick()
#define	Clock_driver_support_initialize_hardware()   leon2_clock_init()

Functions
	RTEMS_SYSINIT_ITEM (leon2_clock_initialize_early, RTEMS_SYSINIT_CPU_COUNTER, RTEMS_SYSINIT_ORDER_FIRST)
uint32_t	_CPU_Counter_frequency (void)
	Returns the current CPU counter frequency in Hz.

Variables
int	CLOCK_SPEED
	SPARC_COUNTER_DEFINITION

Detailed Description

Clock Tick Device Driver.

This routine initializes LEON timer 1 which used for the clock tick.

The tick frequency is directly programmed to the configured number of microseconds per tick.