GRUB_SERIAL_COMMAND='serial --speed=115200 --unit=1'
GRUB_TERMINAL_OUTPUT="console serial"
GRUB_TERMINAL_INPUT="console serial"
GRUB_TERMINAL="console serial"
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX console=tty0 console=ttyS1,115200"
