diff --git a/configs/M54455EVB_defconfig b/configs/M54455EVB_defconfig
index 9c90ca5..c57f334 100644
--- a/configs/M54455EVB_defconfig
+++ b/configs/M54455EVB_defconfig
@@ -4,6 +4,8 @@
 CONFIG_SYS_EXTRA_OPTIONS="SYS_ATMEL_BOOT,SYS_INPUT_CLKSRC=33333333"
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_BOOTDELAY=1
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="root=/dev/mtdblock1 rw rootfstype=jffs2 ip=none mtdparts=physmap-flash.0:5M(kernel)ro,-(jffs2)"
 CONFIG_SYS_PROMPT="-> "
 CONFIG_CMD_IDE=y
 # CONFIG_CMD_LOADB is not set