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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-12-20 GuEe-GUI first version
*/
#include <rtthread.h>
#include <rthw.h>
#include <gtimer.h>
#include <cpuport.h>
#define EL1_PHY_TIMER_IRQ_NUM 30
static volatile rt_uint64_t timer_step;
static void rt_hw_timer_isr(int vector, void *parameter)
{
rt_hw_set_gtimer_val(timer_step);
rt_tick_increase();
}
void rt_hw_gtimer_init(void)
{
rt_hw_interrupt_install(EL1_PHY_TIMER_IRQ_NUM, rt_hw_timer_isr, RT_NULL, "tick");
__ISB();
timer_step = rt_hw_get_gtimer_frq();
__DSB();
timer_step /= RT_TICK_PER_SECOND;
rt_hw_gtimer_local_enable();
}
void rt_hw_gtimer_local_enable(void)
{
rt_hw_gtimer_disable();
rt_hw_set_gtimer_val(timer_step);
rt_hw_interrupt_umask(EL1_PHY_TIMER_IRQ_NUM);
rt_hw_gtimer_enable();
}
void rt_hw_gtimer_local_disable(void)
{
rt_hw_gtimer_disable();
rt_hw_interrupt_mask(EL1_PHY_TIMER_IRQ_NUM);
}
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