diff --git a/configs/M54418TWR_serial_mii_defconfig b/configs/M54418TWR_serial_mii_defconfig
new file mode 100644
index 0000000..93fe401
--- /dev/null
+++ b/configs/M54418TWR_serial_mii_defconfig
@@ -0,0 +1,3 @@
+CONFIG_SYS_EXTRA_OPTIONS="CF_SBF,SYS_SERIAL_BOOT,SYS_TEXT_BASE=0x47E00000,SYS_INPUT_CLKSRC=25000000"
+CONFIG_M68K=y
+CONFIG_TARGET_M54418TWR=y