arch_avr_misc.h

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/*
 * arch_avr_misc.h
 *
 *  Copyright 2021-2026 Clement Savergne <csavergne@yahoo.com>
 
    This file is part of yasim-avr.
 
    yasim-avr is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    yasim-avr is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with yasim-avr.  If not, see <http://www.gnu.org/licenses/>.
 */
 
//=======================================================================================
 
#ifndef __YASIMAVR_AVR_MISC_H__
#define __YASIMAVR_AVR_MISC_H__
 
#include "arch_avr_globals.h"
#include "core/sim_interrupt.h"
#include "core/sim_memory.h"
#include "ioctrl_common/sim_vref.h"
 
YASIMAVR_BEGIN_NAMESPACE
 
 
//=======================================================================================
class AVR_ARCHAVR_PUBLIC_API ArchAVR_VREF : public VREF {
 
public:
 
    explicit ArchAVR_VREF(double band_gap);
 
};
 
 
//=======================================================================================
 
struct ArchAVR_IntCtrlConfig {
 
    unsigned int vector_count;
    unsigned int vector_size;
    reg_addr_t reg_control;
    bitspec_t bs_ivsel;
    bitspec_t bs_ivce;
 
};
 
class AVR_ARCHAVR_PUBLIC_API ArchAVR_IntCtrl : public InterruptController {
 
public:
 
    ArchAVR_IntCtrl(const ArchAVR_IntCtrlConfig& config);
 
    virtual bool init(Device& device) override;
    void ioreg_write_handler(reg_addr_t addr, const ioreg_write_t& data);
 
private:
 
    const ArchAVR_IntCtrlConfig& m_config;
    MemorySectionManager* m_sections;
    BoundFunctionCycleTimer<ArchAVR_IntCtrl> m_lock_timer;
    BoundFunctionSignalHook<ArchAVR_IntCtrl> m_section_hook;
 
    virtual IRQ_t get_next_irq() const override;
    void lock_timeout();
    void section_raised(const signal_data_t& sigdata, int hooktag);
 
};
 
 
//=======================================================================================
struct ArchAVR_MiscConfig {
 
    std::vector<reg_addr_t> gpior;
 
};
 
class AVR_ARCHAVR_PUBLIC_API ArchAVR_MiscRegCtrl : public Peripheral {
 
public:
 
    explicit ArchAVR_MiscRegCtrl(const ArchAVR_MiscConfig& config);
 
    virtual bool init(Device& device) override;
 
private:
 
    const ArchAVR_MiscConfig& m_config;
 
};
 
 
//=======================================================================================
 
struct ArchAVR_ResetCtrlConfig {
 
    regbit_t rb_PORF;    
    regbit_t rb_EXTRF;   
    regbit_t rb_BORF;    
    regbit_t rb_WDRF;    
 
};
 
class AVR_ARCHAVR_PUBLIC_API ArchAVR_ResetCtrl : public Peripheral {
 
public:
 
    explicit ArchAVR_ResetCtrl(const ArchAVR_ResetCtrlConfig& config);
 
    virtual bool init(Device& device) override;
    virtual void reset(int flags) override;
    virtual void ioreg_write_handler(reg_addr_t addr, const ioreg_write_t& data) override;
 
private:
 
    const ArchAVR_ResetCtrlConfig& m_config;
    uint32_t m_rst_flags;
 
    void check_flag_write(const regbit_t& rb, uint8_t write_value, int flag);
 
};
 
 
YASIMAVR_END_NAMESPACE
 
#endif //__YASIMAVR_AVR_MISC_H__