diff --git a/arch/arm/src/efm32/efm32_lowputc.c b/arch/arm/src/efm32/efm32_lowputc.c
new file mode 100644
index 00000000000..2cb7c4ac4ac
--- /dev/null
+++ b/arch/arm/src/efm32/efm32_lowputc.c
@@ -0,0 +1,95 @@
+/****************************************************************************
+ * arch/arm/src/efm32/efm32_lowputc.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+#include "efm32_lowputc.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: efm32_lowsetup
+ *
+ * Description:
+ *   Called at the very beginning of _start.  Performs low level
+ *   initialization including setup of the console UART.  This UART done
+ *   early so that the serial console is available for debugging very early
+ *   in the boot sequence.
+ *
+ ****************************************************************************/
+
+void efm32_lowsetup(void)
+{
+#warning Missing logic
+}
+
+/*****************************************************************************
+ * Name: efm32_lowputc
+ *
+ * Description:
+ *   Output one character to the UART using a simple polling method.
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_SERIAL_CONSOLE
+void efm32_lowputc(uint32_t ch)
+{
+#warning Missing logic
+}
+#endif
+
+/*****************************************************************************
+ * Name: efm32_uartconfigure
+ *
+ * Description:
+ *   Configure a UART as a RS-232 UART.
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_UART_DEVICE
+void efm32_uartconfigure(uintptr_t uart_base, uint32_t baud, uint32_t clock,
+                         unsigned int parity, unsigned int nbits)
+{
+#warning Missing logic
+}
+#endif
diff --git a/arch/arm/src/efm32/efm32_lowputc.h b/arch/arm/src/efm32/efm32_lowputc.h
index 670ed9da744..6582ee83196 100644
--- a/arch/arm/src/efm32/efm32_lowputc.h
+++ b/arch/arm/src/efm32/efm32_lowputc.h
@@ -42,6 +42,10 @@
 
 #include <nuttx/config.h>
 
+#include <stdint.h>
+
+#include "efm32_config.h"
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -57,10 +61,31 @@
  *
  ****************************************************************************/
 
-#if defined(CONFIG_DEV_LOWCONSOLE) || defined(CONFIG_DEBUG)  
 void efm32_lowsetup(void);
-#else
-#  define efm32_lowsetup()
+
+/*****************************************************************************
+ * Name: efm32_lowputc
+ *
+ * Description:
+ *   Output one character to the UART using a simple polling method.
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_SERIAL_CONSOLE
+void efm32_lowputc(uint32_t ch);
+#endif
+
+/*****************************************************************************
+ * Name: efm32_uartconfigure
+ *
+ * Description:
+ *   Configure a UART as a RS-232 UART.
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_UART_DEVICE
+void efm32_uartconfigure(uintptr_t uart_base, uint32_t baud, uint32_t clock,
+                         unsigned int parity, unsigned int nbits);
 #endif
 
 #endif /* __ARCH_ARM_SRC_EFM32_EFM32_LOWPUTC_H */