diff --git a/arch/arm/src/efm32/efm32_config.h b/arch/arm/src/efm32/efm32_config.h
new file mode 100644
index 0000000000..8e926f1ed7
--- /dev/null
+++ b/arch/arm/src/efm32/efm32_config.h
@@ -0,0 +1,158 @@
+/************************************************************************************
+ * arch/arm/src/efm32/efm32_config.h
+ *
+ *   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.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_EFM32_EFM32_CONFIG_H
+#define __ARCH_ARM_SRC_EFM32_EFM32_CONFIG_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* Make sure that the configuration does not enable UARTs that the MCU does not
+ * have
+ */
+
+#ifndef CONFIG_EFM32_HAVE_USART2
+#  undef CONFIG_EFM32_USART2
+#endif
+
+#ifndef CONFIG_EFM32_HAVE_UART0
+#  undef CONFIG_EFM32_UART0
+#endif
+
+#ifndef CONFIG_EFM32_HAVE_UART1
+#  undef CONFIG_EFM32_UART1
+#endif
+
+#ifndef CONFIG_EFM32_HAVE_LEUART1
+#  undef CONFIG_EFM32_LEUART1
+#endif
+
+#ifndef CONFIG_EFM32_UART
+#  undef CONFIG_EFM32_USART0
+#  undef CONFIG_EFM32_USART1
+#  undef CONFIG_EFM32_USART2
+#  undef CONFIG_EFM32_UART0
+#  undef CONFIG_EFM32_UART1
+#  undef CONFIG_EFM32_LEUART0
+#  undef CONFIG_EFM32_LEUART1
+#endif
+
+/* Is there a UART device? (excluding low energy UARTs) */
+
+#undef HAVE_UART_DEVICE
+#if defined(CONFIG_EFM32_USART0) ||  defined(CONFIG_EFM32_USART1) || \
+    defined(CONFIG_EFM32_USART2) ||  defined(CONFIG_EFM32_UART0) || \
+    defined(CONFIG_EFM32_UART1)
+#  define HAVE_UART_DEVICE 1
+#endif
+
+/* Is there a serial console? (Low energy UARTs not yet supported) */
+
+#if defined(CONFIG_USART0_SERIAL_CONSOLE) && defined(CONFIG_EFM32_USART0)
+#  undef CONFIG_USART1_SERIAL_CONSOLE
+#  undef CONFIG_USART2_SERIAL_CONSOLE
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
+#elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_EFM32_USART1)
+#  undef CONFIG_USART0_SERIAL_CONSOLE
+#  undef CONFIG_USART2_SERIAL_CONSOLE
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
+#elif defined(CONFIG_USART2_SERIAL_CONSOLE) && defined(CONFIG_EFM32_USART2)
+#  undef CONFIG_USART0_SERIAL_CONSOLE
+#  undef CONFIG_USART1_SERIAL_CONSOLE
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
+#elif defined(CONFIG_UART0_SERIAL_CONSOLE) && defined(CONFIG_EFM32_UART0)
+#  undef CONFIG_USART0_SERIAL_CONSOLE
+#  undef CONFIG_USART1_SERIAL_CONSOLE
+#  undef CONFIG_USART2_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
+#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_EFM32_UART1)
+#  undef CONFIG_USART0_SERIAL_CONSOLE
+#  undef CONFIG_USART1_SERIAL_CONSOLE
+#  undef CONFIG_USART2_SERIAL_CONSOLE
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  define HAVE_SERIAL_CONSOLE 1
+#else
+#  warning "No valid CONFIG_U[S]ART[n]_SERIAL_CONSOLE Setting"
+#  undef CONFIG_USART0_SERIAL_CONSOLE
+#  undef CONFIG_USART1_SERIAL_CONSOLE
+#  undef CONFIG_USART2_SERIAL_CONSOLE
+#  undef CONFIG_UART0_SERIAL_CONSOLE
+#  undef CONFIG_UART1_SERIAL_CONSOLE
+#  undef HAVE_SERIAL_CONSOLE
+#endif
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_EFM32_EFM32_CONFIG_H */