[coreboot] How to quit Tint payload?

[Paul Menzel]

Dear coreboot folks,

Starting the Tint payload, in my case from SeaBIOS, when the game is
over, the score is shown. How can I quit the payload, which probably 
means restart the system?

Pressing ESC or Ctrl + Alt + Del don’t work. The only way I have found
so far, is hitting the reset button on the mainboard.

Thanks,

Paul