diff --git a/openpower/configs/hostboot/romulus.config b/openpower/configs/hostboot/romulus.config
index 3d8aaad..af8a85e 100755
--- a/openpower/configs/hostboot/romulus.config
+++ b/openpower/configs/hostboot/romulus.config
@@ -1,6 +1,8 @@
-# The Serial Flash Controller is the AST2400 BMC.
-set   SFC_IS_AST2500
+# The BMC MBOX Protocol is used to access PNOR
+unset SFC_IS_AST2500
 unset SFC_IS_AST2400
+set   PNORDD_IS_BMCMBOX
+unset PNORDD_IS_SFC
 unset BMC_DOES_SFC_INIT
 unset SFC_IS_IBM_DPSS
 set   ALLOW_MICRON_PNOR
@@ -45,8 +47,8 @@
 
 # Compile in hostboot runtime PRD
 set HBRT_PRD
-unset HTMGT
-unset START_OCC_DURING_BOOT
+set HTMGT
+set START_OCC_DURING_BOOT
 
 #PNOR flags
 unset PNOR_TWO_SIDE_SUPPORT