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