rt-thread/bsp/phytium/board/secondary_cpu.c

/*
 * Copyright (c) 2006-2023, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Email: opensource_embedded@phytium.com.cn
 *
 * Change Logs:
 * Date        Author       Notes
 * 2022-10-26  huanghe      first commit
 * 2022-10-26  zhugengyu    support aarch64
 * 2023-07-26  huanghe      update psci uage
 *
 */

#include <rtthread.h>
#include "board.h"
#include <gicv3.h>
#include "rtconfig.h"
#include "phytium_cpu.h"

#if defined(TARGET_ARMV8_AARCH64)
    #include "cpuport.h"
    #include "gtimer.h"
    #include "mmu.h"
    #include "cp15.h"
#endif

#ifdef RT_USING_SMP
#include <interrupt.h>
#include "phytium_interrupt.h"

#if defined(TARGET_ARMV8_AARCH64)
    #include "psci.h"
    extern void _secondary_cpu_entry(void);
#else
    extern void rt_secondary_cpu_entry(void);
#endif

#include "fpsci.h"
rt_uint64_t rt_cpu_mpidr_early[] =
{
#if defined(TARGET_PE2202)
    [0] = RT_CORE_AFF(0),
    [1] = RT_CORE_AFF(1),
#elif defined(TARGET_PE2204)
    [0] = RT_CORE_AFF(0),
    [1] = RT_CORE_AFF(1),
    [2] = RT_CORE_AFF(2),
    [3] = RT_CORE_AFF(3),
#elif defined(TARGET_PD2408)
    [0] = RT_CORE_AFF(0),
    [1] = RT_CORE_AFF(1),
    [2] = RT_CORE_AFF(2),
    [3] = RT_CORE_AFF(3),
    [4] = RT_CORE_AFF(4),
    [5] = RT_CORE_AFF(5),
    [6] = RT_CORE_AFF(6),
    [7] = RT_CORE_AFF(7),
#endif
    [RT_CPUS_NR] = 0
};

extern int rt_hw_timer_init(void);

void rt_hw_secondary_cpu_up(void)
{
    rt_uint32_t i;
    rt_uint32_t cpu_mask = 0;
    int cpu_id;
    cpu_id = rt_hw_cpu_id();
    rt_kprintf("rt_hw_secondary_cpu_up is processing \r\n");
    for (i = 0; i < RT_CPUS_NR; i++)
    {
        if (i == cpu_id)
        {
            continue;
        }
        cpu_mask = (1 << phytium_cpu_id_mapping(i));

#if defined(TARGET_ARMV8_AARCH64)
        /* code */
        char *entry = (char *)_secondary_cpu_entry;
        entry += PV_OFFSET;
        FPsciCpuMaskOn(cpu_mask, (uintptr)entry);
        __DSB();
#else
        /* code */
        char *entry = (char *)rt_secondary_cpu_entry;
        entry += PV_OFFSET;
        FPsciCpuMaskOn(cpu_mask, (uintptr)entry);
        __asm__ volatile("dsb" ::: "memory");
#endif

    }
}

/**
 * This function will initialize board
 */
extern size_t MMUTable[];

void rt_hw_secondary_cpu_bsp_start(void)
{
    /*  spin lock init */
    rt_hw_spin_lock(&_cpus_lock);

    /* mmu init */
#if defined(TARGET_ARMV8_AARCH64)
    extern unsigned long MMUTable[];
    rt_hw_mmu_ktbl_set((unsigned long)MMUTable);
#else
    rt_uint32_t mmutable_p;
    mmutable_p = (rt_uint32_t)MMUTable + (rt_uint32_t)PV_OFFSET ;
    rt_hw_mmu_switch((void*)mmutable_p) ;
#endif

    /* vector init */
    rt_hw_vector_init();

    /* interrupt init */
#if defined(TARGET_ARMV8_AARCH64)
    arm_gic_cpu_init(0, 0);
    arm_gic_redist_address_set(0, platform_get_gic_redist_base(), rt_hw_cpu_id());
    phytium_aarch64_arm_gic_redist_init();
#else
    arm_gic_cpu_init(0);
    arm_gic_redist_address_set(0, platform_get_gic_redist_base(), rt_hw_cpu_id());
    arm_gic_redist_init(0);
#endif

    /* gtimer init */
#if defined(TARGET_ARMV8_AARCH64)
    rt_hw_gtimer_init();
#else
    rt_hw_timer_init();
#endif
    rt_hw_interrupt_umask(RT_SCHEDULE_IPI);

    /* start scheduler */
    rt_kprintf("\rcall cpu %d on success\n", rt_hw_cpu_id());
    rt_hw_secondary_cpu_idle_exec();
    rt_system_scheduler_start();
}

void rt_hw_secondary_cpu_idle_exec(void)
{
#if defined(TARGET_ARMV8_AARCH64)
    __WFE();
#else
    asm volatile("wfe" ::
                 : "memory", "cc");
#endif
}

#endif