-CONFIG_SYS_EXTRA_OPTIONS=SYS_SDRAM_SIZE=SZ_2G
+CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=SZ_2G"
CONFIG_ARM=y
CONFIG_TARGET_TX53=y
CONFIG_TARGET_TX53_1232=y
CONFIG_CMD_I2C=y
CONFIG_DOS_PARTITION=y
CONFIG_ENV_IS_IN_NAND=y
+CONFIG_SYS_PROMPT="TX53 U-Boot > "