diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d4b373e45d..b1aa8656e4 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -20,7 +20,15 @@
 
 config ARCH_X86
 	boolean
+	help
+	  This option is used to set the architecture of a mainboard.
+	  It is usually set in mainboard/*/Kconfig. 
 
 config CAR_TYPE_I586
 	boolean
+	help
+	  This option selects the reset vector and cache as ram
+	  implementation for a mainboard. See arch/x86/Makefile for
+	  more hints on possible values.
+	  It is usually set in mainboard/*/Kconfig.