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diff --git a/nuttx/arch/arm/src/lpc31xx/lpc31_internal.h b/nuttx/arch/arm/src/lpc31xx/lpc31_internal.h
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+++ b/nuttx/arch/arm/src/lpc31xx/lpc31_internal.h
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+/************************************************************************************
+ * arch/arm/src/lpc31xx/lpc31_internal.h
+ *
+ *   Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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_LPC31XX_LPC31_INTERNAL_H
+#define __ARCH_ARM_SRC_LPC31XX_LPC31_INTERNAL_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "up_internal.h"
+#include "up_arch.h"
+#include "chip.h"
+#include "lpc31_ioconfig.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Configuration ********************************************************************/
+
+/* NVIC priority levels *************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+/* Configure a pin as an input */
+
+static inline void gpio_configinput(uint32_t ioconfig, uint32_t bit)
+{
+  uint32_t regaddr;
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE0RESET_OFFSET;
+  putreg32(bit, regaddr);
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE1RESET_OFFSET;
+  putreg32(bit, regaddr);
+}
+
+/* Return the current state of an input GPIO pin */
+
+static inline bool lpc31_gpioread(uint32_t ioconfig, uint32_t bit)
+{
+  uint32_t regaddr = ioconfig + LPC31_IOCONFIG_PINS_OFFSET;
+  return (getreg32(regaddr) & bit) != 0;
+}
+
+/* Configure the pin so that it is driven by the device */
+
+static inline void gpio_configdev(uint32_t ioconfig, uint32_t bit)
+{
+  uint32_t regaddr;
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE1RESET_OFFSET;
+  putreg32(bit, regaddr);
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE0SET_OFFSET;
+  putreg32(bit, regaddr);
+}
+
+/* Configure a pin as a low output */
+
+static inline void gpio_outputlow(uint32_t ioconfig, uint32_t bit)
+{
+  uint32_t regaddr;
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE1SET_OFFSET;
+  putreg32(bit, regaddr);
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE0RESET_OFFSET;
+  putreg32(bit, regaddr);
+}
+
+/* Configure a pin as a high output */
+
+static inline void gpio_outputhigh(uint32_t ioconfig, uint32_t bit)
+{
+  uint32_t regaddr;
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE1SET_OFFSET;
+  putreg32(bit, regaddr);
+
+  regaddr = ioconfig + LPC31_IOCONFIG_MODE0SET_OFFSET;
+  putreg32(bit, regaddr);
+}
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc31_lowsetup
+ *
+ * Description:
+ *   Called early in up_boot.  Performs chip-common low level initialization.
+ *
+ ************************************************************************************/
+
+EXTERN void lpc31_lowsetup(void);
+
+/************************************************************************************
+ * Name: lpc31_clockconfig
+ *
+ * Description:
+ *   Called to change to new clock based on settings in board.h
+ *
+ ************************************************************************************/
+
+EXTERN void lpc31_clockconfig(void);
+
+/************************************************************************************
+ * Name:  lpc31_spiselect and lpc31_spistatus
+ *
+ * Description:
+ *   The external functions, lpc31_spiselect, lpc31_spistatus, and
+ *   lpc31_spicmddata must be provided by board-specific logic.  These are
+ *   implementations of the select, status, and cmddata methods of the SPI interface
+ *   defined by struct spi_ops_s (see include/nuttx/spi.h). All other methods
+ *   (including up_spiinitialize()) are provided by common LPC31XX logic.  To use
+ *   this common SPI logic on your board:
+ *
+ *   1. Provide logic in lpc31_boardinitialize() to configure SPI chip select
+ *      pins.
+ *   2. Provide lpc31_spiselect() and lpc31_spistatus() functions in your
+ *      board-specific logic.  These functions will perform chip selection and
+ *      status operations using GPIOs in the way your board is configured.
+ *   3. If CONFIG_SPI_CMDDATA is selected in your NuttX configuration, provide
+ *      the lpc31_spicmddata() function in your board-specific logic.  This
+ *      function will perform cmd/data selection operations using GPIOs in the
+ *      way your board is configured.
+ *   4. Add a calls to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   5. The handle returned by up_spiinitialize() may then be used to bind the
+ *      SPI driver to higher level logic (e.g., calling 
+ *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ *      the SPI MMC/SD driver).
+ *
+ ************************************************************************************/
+
+struct spi_dev_s;
+enum spi_dev_e;
+EXTERN void  lpc31_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
+EXTERN uint8_t lpc31_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
+#ifdef CONFIG_SPI_CMDDATA
+EXTERN int lpc31_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
+#endif
+
+/************************************************************************************
+ * Name:  lpc31_usbpullup
+ *
+ * Description:
+ *   If USB is supported and the board supports a pullup via GPIO (for USB software
+ *   connect and disconnect), then the board software must provide lpc31_pullup.
+ *   See include/nuttx/usb/usbdev.h for additional description of this method.
+ *   Alternatively, if no pull-up GPIO the following EXTERN can be redefined to be
+ *   NULL.
+ *
+ ************************************************************************************/
+
+struct usbdev_s;
+EXTERN int lpc31_usbpullup(FAR struct usbdev_s *dev,  bool enable);
+
+/************************************************************************************
+ * Name:  lpc31_usbsuspend
+ *
+ * Description:
+ *   Board logic must provide the lpc31_usbsuspend logic if the USBDEV driver is
+ *   used.  This function is called whenever the USB enters or leaves suspend mode.
+ *   This is an opportunity for the board logic to shutdown clocks, power, etc.
+ *   while the USB is suspended.
+ *
+ ************************************************************************************/
+
+struct usbdev_s;
+EXTERN void lpc31_usbsuspend(FAR struct usbdev_s *dev, bool resume);
+
+/****************************************************************************
+ * Name: sdio_initialize
+ *
+ * Description:
+ *   Initialize SDIO for operation.
+ *
+ * Input Parameters:
+ *   slotno - Not used.
+ *
+ * Returned Values:
+ *   A reference to an SDIO interface structure.  NULL is returned on failures.
+ *
+ ****************************************************************************/
+
+struct sdio_dev_s; /* See include/nuttx/sdio.h */
+EXTERN FAR struct sdio_dev_s *sdio_initialize(int slotno);
+
+/****************************************************************************
+ * Name: sdio_mediachange
+ *
+ * Description:
+ *   Called by board-specific logic -- posssible from an interrupt handler --
+ *   in order to signal to the driver that a card has been inserted or
+ *   removed from the slot
+ *
+ * Input Parameters:
+ *   dev        - An instance of the SDIO driver device state structure.
+ *   cardinslot - true is a card has been detected in the slot; false if a 
+ *                card has been removed from the slot.  Only transitions
+ *                (inserted->removed or removed->inserted should be reported)
+ *
+ * Returned Values:
+ *   None
+ *
+ ****************************************************************************/
+
+EXTERN void sdio_mediachange(FAR struct sdio_dev_s *dev, bool cardinslot);
+
+/****************************************************************************
+ * Name: sdio_wrprotect
+ *
+ * Description:
+ *   Called by board-specific logic to report if the card in the slot is
+ *   mechanically write protected.
+ *
+ * Input Parameters:
+ *   dev       - An instance of the SDIO driver device state structure.
+ *   wrprotect - true is a card is writeprotected.
+ *
+ * Returned Values:
+ *   None
+ *
+ ****************************************************************************/
+
+EXTERN void sdio_wrprotect(FAR struct sdio_dev_s *dev, bool wrprotect);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_LPC31XX_LPC31_INTERNAL_H */