86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
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/*
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* Copyright (c) 2006-2018, 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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* 2018/12/23 Bernard The first version
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* 2018/12/27 Jesven Add secondary cpu boot
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <stdint.h>
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#include "board.h"
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#include <encoding.h>
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#include <clint.h>
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#include <atomic.h>
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#ifdef RT_USING_SMP
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int rt_hw_cpu_id(void)
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{
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return read_csr(mhartid);
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}
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void rt_hw_spin_lock_init(rt_hw_spinlock_t *lock)
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{
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((spinlock_t *)lock)->lock = 0;
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}
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void rt_hw_spin_lock(rt_hw_spinlock_t *lock)
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{
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spinlock_lock((spinlock_t *)lock);
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}
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void rt_hw_spin_unlock(rt_hw_spinlock_t *lock)
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{
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spinlock_unlock((spinlock_t *)lock);
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}
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void rt_hw_ipi_send(int ipi_vector, unsigned int cpu_mask)
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{
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int idx;
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for (idx = 0; idx < RT_CPUS_NR; idx ++)
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{
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if (cpu_mask & (1 << idx))
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{
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clint_ipi_send(idx);
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}
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}
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}
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extern rt_base_t secondary_boot_flag;
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void rt_hw_secondary_cpu_up(void)
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{
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mb();
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secondary_boot_flag = 0xa55a;
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}
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extern void rt_hw_scondary_interrupt_init(void);
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extern int rt_hw_tick_init(void);
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extern int rt_hw_clint_ipi_enable(void);
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void secondary_cpu_c_start(void)
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{
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rt_hw_spin_lock(&_cpus_lock);
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/* initialize interrupt controller */
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rt_hw_scondary_interrupt_init();
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rt_hw_tick_init();
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rt_hw_clint_ipi_enable();
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rt_system_scheduler_start();
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}
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void rt_hw_secondary_cpu_idle_exec(void)
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{
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asm volatile ("wfi");
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}
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#endif /*RT_USING_SMP*/
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