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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-11-22 Jesven first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <stdint.h>
#include "cp15.h"
#include "board.h"
#include "gtimer.h"
#define TIMER_IRQ 30
static rt_uint64_t timerStep = 0;
static void rt_hw_timer_isr(int vector, void *param)
{
rt_hw_set_gtimer_val(timerStep);
rt_tick_increase();
}
void rt_hw_timer_enable(void)
{
rt_hw_set_gtimer_val(timerStep);
rt_hw_interrupt_umask(TIMER_IRQ);
rt_hw_gtimer_enable();
}
int rt_hw_timer_init(void)
{
rt_hw_interrupt_install(TIMER_IRQ, rt_hw_timer_isr, RT_NULL, "tick");
__ISB();
timerStep = rt_hw_get_gtimer_frq();
__DSB();
timerStep /= RT_TICK_PER_SECOND;
rt_hw_timer_enable();
return 0;
}
INIT_BOARD_EXPORT(rt_hw_timer_init);
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