AMiRo-OS

  // validate bootloader

  if ((BL_CALLBACK_TABLE_ADDRESS->magicNumber == BL_MAGIC_NUMBER) &&

      (BL_CALLBACK_TABLE_ADDRESS->vBootloader.major == BL_VERSION_MAJOR) &&

      (BL_CALLBACK_TABLE_ADDRESS->vBootloader.minor >= BL_VERSION_MINOR)) {

    // call bootloader callback depending on arguments

    switch (shutdown) {

      case AOS_SHUTDOWN_PASSIVE:

        BL_CALLBACK_TABLE_ADDRESS->cbHandleShutdownRequest();

        break;

      case AOS_SHUTDOWN_HIBERNATE:

        BL_CALLBACK_TABLE_ADDRESS->cbShutdownHibernate();

        break;

      case AOS_SHUTDOWN_DEEPSLEEP:

        BL_CALLBACK_TABLE_ADDRESS->cbShutdownDeepsleep();

        break;

      case AOS_SHUTDOWN_TRANSPORTATION:

        BL_CALLBACK_TABLE_ADDRESS->cbShutdownTransportation();

        break;

      case AOS_SHUTDOWN_RESTART:

        BL_CALLBACK_TABLE_ADDRESS->cbShutdownRestart();

        break;

      // must never occur

      case AOS_SHUTDOWN_NONE:

      default:

        break;

    }

  } else {

    // fallback if bootloader was found to be invalid

    aosprintf("Bootloader incompatible or not available!\n");

    chThdSleep(TIME_INFINITE);