arm.h

/*
 * This file is part of libqbox
 * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
 * Author: GreenSocs 2020
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#pragma once
 
#include "cpu.h"
 
class QemuCpuArm : public QemuCpu
{
public:
    static constexpr qemu::Target ARCH = qemu::Target::AARCH64;
 
    QemuCpuArm(const sc_core::sc_module_name& name, QemuInstance& inst, const std::string& type_name)
        : QemuCpu(name, inst, type_name)
    {
    }
 
    qemu::CpuAarch64 get_cpu_aarch64() const { return qemu::CpuAarch64(m_cpu); }
 
    void end_of_elaboration() override
    {
        QemuCpu::end_of_elaboration();
 
        // This is needed for KVM otherwise the GIC won't reset properly when a system reset is requested
        get_cpu_aarch64().register_reset();
    }
 
    void start_of_simulation() override
    {
        // According to qemu/hw/arm/virt.c:
        // virt_cpu_post_init() must be called after the CPUs have been realized
        // and the GIC has been created.
        // I am not sure if this the right place where to call it. I wonder if a
        // `before_start_of_simulation` stage would be a better place for this.
        // It MUST be called before `QemuCpu::start_of_simulation()`.
        get_cpu_aarch64().post_init();
 
        QemuCpu::start_of_simulation();
    }
};