SW1 is the white push botton on the FoxG20 board close to pin J7-40. It
is wired to PC4, pulled up to 1.8 volts when not depressed (normal state).

It uses the gpio-keys device in board-foxg20.c [if CONFIG_KEYBOARD_GPIO
is defined in kernel build]

Try:
   evtest /dev/input/event0
and press SW1 

Doug Gilbert
20110829
