diff --git a/Kconfig b/Kconfig
index 1d3c0e2c88..081a743321 100644
--- a/Kconfig
+++ b/Kconfig
@@ -59,6 +59,12 @@ config CC_OPTIMIZE_FOR_SIZE
 
 	  This option is enabled by default for U-Boot.
 
+config BASE_DEFCONFIG
+	string "Base defconfig of config fragment"
+	default ""
+	help
+	  Indicate the base defconfig of config fragment.
+
 config DISTRO_DEFAULTS
 	bool "Select defaults suitable for booting general purpose Linux distributions"
 	default y if ARCH_SUNXI || TEGRA