ARM64Timer.h

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/*
 * Copyright (C) 2025 Ivan Tan
 * Copyright (C) 2019 Niek Linnenbank
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __LIBARCH_ARM64_TIMER_H
#define __LIBARCH_ARM64_TIMER_H
 
#include <Types.h>
#include <Macros.h>
#include <Timer.h>
 
class ARM64Timer : public Timer
{
  private:
 
    static const u32 TimerControlEnable = 1;
 
  public:
 
    ARM64Timer();
 
    virtual Result setFrequency(const Size hertz);
 
    virtual Result tick();
 
  private:
 
    u32 getSystemFrequency(void) const;
 
    void setPL1PhysicalTimerValue(const u32 value);
 
    void setPL1PhysicalTimerControl(const u32 value);
 
  private:
 
    Size m_initialTimerCounter;
};
 
#endif /* __LIBARCH_ARM64_ARM64TIMER_H */