84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
/*
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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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/*************************************************
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File name: smp_support.c
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Description: SMP support routines
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Others: take RT-Thread v4.0.2/libcpu/risc-v/k210/cpuport_smp.c
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https://github.com/RT-Thread/rt-thread/tree/v4.0.2
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History:
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1. Date: 2021-04-25
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Author: AIIT XUOS Lab
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*************************************************/
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#include "board.h"
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#include <bsp_atomic.h>
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#include <clint.h>
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#include <encoding.h>
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#include <xs_spinlock.h>
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#include <stdint.h>
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#include <xs_assign.h>
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void HwSendIpi(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 < CPU_NUMBERS; idx ++)
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if (cpu_mask & (1 << idx))
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clint_ipi_send(idx);
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}
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int GetCpuId(void)
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{
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return READ_CSR(mhartid);
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}
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void InitHwSpinlock(HwSpinlock *lock)
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{
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((spinlock_t *)lock)->lock = 0;
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}
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void HwLockSpinlock(HwSpinlock *lock)
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{
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spinlock_lock((spinlock_t *)lock);
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}
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void HwUnlockSpinlock(HwSpinlock *lock)
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{
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spinlock_unlock((spinlock_t *)lock);
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}
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extern uint64 cpu2_boot_flag;
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void StartupSecondaryCpu(void)
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{
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mb();
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cpu2_boot_flag = 0x2018050420191010;
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}
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extern void InitHwScondaryInterrupt(void);
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extern int InitHwTick(void);
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extern int EnableHwclintIpi(void);
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void SecondaryCpuCStart(void)
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{
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HwLockSpinlock(&AssignSpinLock);
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InitHwScondaryInterrupt();
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InitHwTick();
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EnableHwclintIpi();
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StartupOsAssign();
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}
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