GRUB_SERIAL_COMMAND='serial --speed=9600 --unit=0'
GRUB_TERMINAL_OUTPUT="console serial"
GRUB_TERMINAL_INPUT="console serial"
GRUB_TERMINAL="console serial"
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX console=tty0 console=ttyS0,9600"
