diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc
index e921bc1d72..bc3ff4bbdf 100644
--- a/src/southbridge/intel/bd82x6x/Makefile.inc
+++ b/src/southbridge/intel/bd82x6x/Makefile.inc
@@ -40,7 +40,9 @@ ramstage-y += watchdog.c
 
 ramstage-$(CONFIG_ELOG) += elog.c
 ramstage-y += spi.c
+ramstage-$(CONFIG_USBDEBUG) += usb_debug.c
 smm-$(CONFIG_SPI_FLASH_SMM) += spi.c
+smm-$(CONFIG_USBDEBUG) += usb_debug.c
 
 ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smi.c
 smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me.c me_8.x.c finalize.c pch.c
diff --git a/src/southbridge/intel/bd82x6x/usb_debug.c b/src/southbridge/intel/bd82x6x/usb_debug.c
index 1cee353e2d..607a88c6c0 100644
--- a/src/southbridge/intel/bd82x6x/usb_debug.c
+++ b/src/southbridge/intel/bd82x6x/usb_debug.c
@@ -19,18 +19,13 @@
 
 #include <stdint.h>
 #include <arch/io.h>
-#include <arch/romcc_io.h>
 #include <console/console.h>
 #include <usbdebug.h>
 #include <device/pci_def.h>
 #include "pch.h"
 
-/* Required for successful build, but currently empty. */
-void set_debug_port(unsigned int port)
-{
-	/* Not needed, the ICH* southbridges hardcode physical USB port 1. */
-}
-
+#ifdef __PRE_RAM__
+#include <arch/romcc_io.h>
 void enable_usbdebug(unsigned int port)
 {
 	u32 dbgctl;
@@ -48,4 +43,11 @@ void enable_usbdebug(unsigned int port)
 	dbgctl |= (1 << 30);
 	write32(CONFIG_EHCI_BAR + CONFIG_EHCI_DEBUG_OFFSET, dbgctl);
 }
+#endif	/* __PRE_RAM__ */
+
+/* Required for successful build, but currently empty. */
+void set_debug_port(unsigned int port)
+{
+	/* Not needed, the ICH* southbridges hardcode physical USB port 1. */
+}