Function TimerInit

src/arch/aarch64/timer.cpp:49–71

}

auto TimerInit() -> void {
  // 计算 interval
  interval = BasicInfoSingleton::instance().interval / SIMPLEKERNEL_TICK;

  // 获取定时器中断号
  timer_intid = KernelFdtSingleton::instance()
                    .GetAarch64Intid("arm,armv8-timer")
                    .value() +
                Gic::kPpiBase;

  InterruptSingleton::instance().RegisterInterruptFunc(
      timer_intid, InterruptDelegate::create<TimerHandler>());

  InterruptSingleton::instance().Ppi(timer_intid, cpu_io::GetCurrentCoreId());

  cpu_io::CNTV_CTL_EL0::ENABLE::Clear();
  cpu_io::CNTV_CTL_EL0::IMASK::Set();

  cpu_io::CNTV_TVAL_EL0::Write(interval);

  cpu_io::CNTV_CTL_EL0::ENABLE::Set();
  cpu_io::CNTV_CTL_EL0::IMASK::Clear();
}