--- /dev/null
+<%- if scope.lookupvar('::debarchitecture') == "arm64" -%>
+GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX console=ttyAMA0,115200n8"
+<% else -%>
+GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX console=tty0 console=ttyS0,115200n8"
+<%- end -%>
+
+GRUB_TERMINAL="serial console"
+GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1"