+"loaddev=mmc 1\0" \
+"root_dev=/dev/mmcblk0p2\0" \
+"load_dtb=load ${loaddev}:2 ${dtbaddr} /boot/am335x-brppt30.dtb; " \
+ "if test $? -eq 0; then " \
+ "setenv root_dev /dev/mmcblk1p2; " \
+ "else; " \
+ "load ${loaddev}:1 ${dtbaddr} am335x-brppt30-legacy.dtb; " \
+ "fi;\0"