diff --git a/board/dbau1x00/Kconfig b/board/dbau1x00/Kconfig
index 3e3cb77..1286e45 100644
--- a/board/dbau1x00/Kconfig
+++ b/board/dbau1x00/Kconfig
@@ -9,4 +9,22 @@
 config SYS_CONFIG_NAME
 	default "dbau1x00"
 
+menu "dbau1x00 board options"
+
+choice
+	prompt "Select au1x00 SoC type"
+
+config DBAU1100
+	bool "Select AU1100"
+
+config DBAU1500
+	bool "Select AU1500"
+
+config DBAU1550
+	bool "Select AU1550"
+
+endchoice
+
+endmenu
+
 endif
diff --git a/configs/dbau1100_defconfig b/configs/dbau1100_defconfig
index db6f98e..aac9f03 100644
--- a/configs/dbau1100_defconfig
+++ b/configs/dbau1100_defconfig
@@ -1,4 +1,4 @@
-CONFIG_SYS_EXTRA_OPTIONS="DBAU1100"
 CONFIG_MIPS=y
 CONFIG_TARGET_DBAU1X00=y
 CONFIG_SYS_BIG_ENDIAN=y
+CONFIG_DBAU1100=y
diff --git a/configs/dbau1500_defconfig b/configs/dbau1500_defconfig
index d2fbff9..d96de13 100644
--- a/configs/dbau1500_defconfig
+++ b/configs/dbau1500_defconfig
@@ -1,4 +1,4 @@
-CONFIG_SYS_EXTRA_OPTIONS="DBAU1500"
 CONFIG_MIPS=y
 CONFIG_TARGET_DBAU1X00=y
 CONFIG_SYS_BIG_ENDIAN=y
+CONFIG_DBAU1500=y
diff --git a/configs/dbau1550_defconfig b/configs/dbau1550_defconfig
index 3142391..a2dfe18 100644
--- a/configs/dbau1550_defconfig
+++ b/configs/dbau1550_defconfig
@@ -1,4 +1,4 @@
-CONFIG_SYS_EXTRA_OPTIONS="DBAU1550"
 CONFIG_MIPS=y
 CONFIG_TARGET_DBAU1X00=y
 CONFIG_SYS_BIG_ENDIAN=y
+CONFIG_DBAU1550=y
diff --git a/configs/dbau1550_el_defconfig b/configs/dbau1550_el_defconfig
index 514f227..767326f 100644
--- a/configs/dbau1550_el_defconfig
+++ b/configs/dbau1550_el_defconfig
@@ -1,4 +1,4 @@
-CONFIG_SYS_EXTRA_OPTIONS="DBAU1550"
 CONFIG_MIPS=y
 CONFIG_TARGET_DBAU1X00=y
 CONFIG_SYS_LITTLE_ENDIAN=y
+CONFIG_DBAU1550=y