3 files changed, 13 insertions, 4 deletions
diff --git a/src/superio/smsc/lpc47m15x/Makefile.inc b/src/superio/smsc/lpc47m15x/Makefile.inc
index c43e037a37..610d87cbce 100644
--- a/src/superio/smsc/lpc47m15x/Makefile.inc
+++ b/src/superio/smsc/lpc47m15x/Makefile.inc
@@ -17,4 +17,5 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 ##
 
+romstage-$(CONFIG_SUPERIO_SMSC_LPC47M15X) += early_serial.c
 ramstage-$(CONFIG_SUPERIO_SMSC_LPC47M15X) += superio.c
diff --git a/src/superio/smsc/lpc47m15x/early_serial.c b/src/superio/smsc/lpc47m15x/early_serial.c
index 7d75baecbe..5686f52106 100644
--- a/src/superio/smsc/lpc47m15x/early_serial.c
+++ b/src/superio/smsc/lpc47m15x/early_serial.c
@@ -20,6 +20,9 @@
 /* Pre-RAM driver for the SMSC LPC47M15X Super I/O chip */
 
 #include <arch/io.h>
+#include <device/pnp.h>
+#include <stdint.h>
+
 #include "lpc47m15x.h"
 
 static void pnp_enter_conf_state(device_t dev)
@@ -34,7 +37,7 @@ static void pnp_exit_conf_state(device_t dev)
 	outb(0xaa, port);
 }
 
-static inline void lpc47m15x_enable_serial(device_t dev, u16 iobase)
+void lpc47m15x_enable_serial(device_t dev, u16 iobase)
 {
 	pnp_enter_conf_state(dev);
 	pnp_set_logical_device(dev);
diff --git a/src/superio/smsc/lpc47m15x/lpc47m15x.h b/src/superio/smsc/lpc47m15x/lpc47m15x.h
index 04f1729abe..32cff48f01 100644
--- a/src/superio/smsc/lpc47m15x/lpc47m15x.h
+++ b/src/superio/smsc/lpc47m15x/lpc47m15x.h
@@ -17,8 +17,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef SUPERIO_SMSC_LPC47M15X_LPC47M15X_H
-#define SUPERIO_SMSC_LPC47M15X_LPC47M15X_H
+#ifndef SUPERIO_SMSC_LPC47M15X_H
+#define SUPERIO_SMSC_LPC47M15X_H
 
 #define LPC47M15X_FDC              0   /* Floppy */
 #define LPC47M15X_PP               3   /* Parallel Port */
@@ -31,4 +31,9 @@
 
 #define LPC47M15X2_MAX_CONFIG_REGISTER	0x5F
 
-#endif
+#include <arch/io.h>
+#include <stdint.h>
+
+void lpc47m15x_enable_serial(device_t dev, u16 iobase);
+
+#endif /* SUPERIO_SMSC_LPC47M15X_H */