• Rahix's avatar
    feat(serial): Add function to switch serial to synchronous · 5e25bc89
    Rahix authored
    In severe error conditions, asynchronous prints will never work.  For
    such cases we need a way to make prints happen synchronously again, the
    same way it works during early boot.  Add a serial_return_to_synchronous()
    function which unconditionally switches the serial driver code to
    synchronous mode.
    
    Only use this function in unrecoverable error conditions!
    Signed-off-by: Rahix's avatarRahix <rahix@rahix.de>
    5e25bc89