diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2ba36b7..65cbb9c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -274,6 +274,13 @@
 	  to be used for speeding up boot time on future reboots and/or
 	  power cycles.
 
+	  For platforms that use Intel FSP for the memory initialization,
+	  please check FSP output HOB via U-Boot command 'fsp hob' to see
+	  if there is FSP_NON_VOLATILE_STORAGE_HOB_GUID (asm/fsp/fsp_hob.h).
+	  If such GUID does not exist, MRC cache is not avaiable on such
+	  platform (eg: Intel Queensbay), which means selecting this option
+	  here does not make any difference.
+
 config HAVE_MRC
 	bool "Add a System Agent binary"
 	depends on !HAVE_FSP