/*
** Copyright (C) ARM Limited, 2002. All rights reserved.
*/
/* clock.c */
/*
** This implements a simple clocking mechanism on the Integrator platform
**
** It reads from the Real Time Clock that is present on the
** Integrator AP Motherboard.
**
** The reference counter ticks at 1Hz.
** this is very poor resolution, but is very simple to implement.
*/
/*
** Define SCATTER_PERIP if the Core Module clock register locations are
** defined in a scatter file
*/
#ifdef SCATTER_PERIP
#include "intgrt_struct.h"
extern struct cm cm0;
extern struct rtc rtc0;
#define CM_REFCT cm0.refct
#define RTC_DR rtc0.DR
#else
#include "intgrt.h"
#endif
/* Return the current value from the Integrator reference clock */
unsigned ref_clock(void)
{
return RTC_DR;
}
void init_clock(void)
{
RTC_DR=0; // Zero the Real Time Clock
}
