diff --git a/arch/arm/src/dm320/Make.defs b/arch/arm/src/dm320/Make.defs
index 029dda6cf6d336da6917b95d848106737c252744..7962d81789ced06e15eef92a62d52df28f8abd51 100644
--- a/arch/arm/src/dm320/Make.defs
+++ b/arch/arm/src/dm320/Make.defs
@@ -1,7 +1,7 @@
############################################################################
# dm320/Make.defs
#
-# Copyright (C) 2007 Gregory Nutt. All rights reserved.
+# Copyright (C) 2007, 2010 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
diff --git a/arch/arm/src/lm3s/Make.defs b/arch/arm/src/lm3s/Make.defs
index 0b39880e1d397e8e0695274b0c9872e394eb6fb4..94a97bdd803730381f06024108b868a07c2aa8e3 100644
--- a/arch/arm/src/lm3s/Make.defs
+++ b/arch/arm/src/lm3s/Make.defs
@@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/lm3s/Make.defs
#
-# Copyright (C) 2009 Gregory Nutt. All rights reserved.
+# Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
diff --git a/arch/arm/src/lpc17xx/Make.defs b/arch/arm/src/lpc17xx/Make.defs
index c5d38b15c6a69d9860a9f3996545009b20039f7b..b58ccd8ef69b2cb328c399b15f3ae89b86a08abe 100755
--- a/arch/arm/src/lpc17xx/Make.defs
+++ b/arch/arm/src/lpc17xx/Make.defs
@@ -72,3 +72,7 @@ endif
ifeq ($(CONFIG_LPC17_GPDMA),y)
CHIP_CSRCS += lpc17_gpdma.c
endif
+
+ifdef CONFIG_NET
+CHIP_CSRCS += lpc17_ethernet.c
+endif
diff --git a/arch/arm/src/lpc17xx/lpc17_ethernet.c b/arch/arm/src/lpc17xx/lpc17_ethernet.c
new file mode 100644
index 0000000000000000000000000000000000000000..3b53d78a63698c43dc36bddd6ace96be367b67f4
--- /dev/null
+++ b/arch/arm/src/lpc17xx/lpc17_ethernet.c
@@ -0,0 +1,675 @@
+/****************************************************************************
+ * arch/arm/src/lpc17xx/lpc17_ethernet.c
+ *
+ * Copyright (C) 2010 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#if defined(CONFIG_NET) && defined(CONFIG_LPC17_ETHERNET)
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <time.h>
+#include <string.h>
+#include <debug.h>
+#include <wdog.h>
+#include <errno.h>
+
+#include <nuttx/irq.h>
+#include <nuttx/arch.h>
+
+#include <net/uip/uip.h>
+#include <net/uip/uip-arp.h>
+#include <net/uip/uip-arch.h>
+
+#include "chip.h"
+#include "lpb17_ethernet.h"
+
+/* Does this chip have and ethernet controller? */
+
+#if LPC17_NETHCONTROLLERS > 0
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* CONFIG_LPC17_NINTERFACES determines the number of physical interfaces
+ * that will be supported.
+ */
+
+#if !defined(CONFIG_LPC17_NINTERFACES) || CONFIG_LPC17_NINTERFACES > LPC17_NETHCONTROLLERS
+# define CONFIG_LPC17_NINTERFACES LPC17_NETHCONTROLLERS
+#endif
+
+/* TX poll deley = 1 seconds. CLK_TCK is the number of clock ticks per second */
+
+#define LPC17_WDDELAY (1*CLK_TCK)
+#define LPC17_POLLHSEC (1*2)
+
+/* TX timeout = 1 minute */
+
+#define LPC17_TXTIMEOUT (60*CLK_TCK)
+
+/* This is a helper pointer for accessing the contents of the Ethernet header */
+
+#define BUF ((struct uip_eth_hdr *)priv->lp_dev.d_buf)
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/* The lpc17_driver_s encapsulates all state information for a single hardware
+ * interface
+ */
+
+struct lpc17_driver_s
+{
+ bool lp_bifup; /* true:ifup false:ifdown */
+ WDOG_ID lp_txpoll; /* TX poll timer */
+ WDOG_ID lp_txtimeout; /* TX timeout timer */
+
+ /* This holds the information visible to uIP/NuttX */
+
+ struct uip_driver_s lp_dev; /* Interface understood by uIP */
+};
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct lpc17_driver_s g_ethdrvr[CONFIG_LPC17_NINTERFACES];
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/* Common TX logic */
+
+static int lpc17_transmit(FAR struct lpc17_driver_s *priv);
+static int lpc17_uiptxpoll(struct uip_driver_s *dev);
+
+/* Interrupt handling */
+
+static void lpc17_receive(FAR struct lpc17_driver_s *priv);
+static void lpc17_txdone(FAR struct lpc17_driver_s *priv);
+static int lpc17_interrupt(int irq, FAR void *context);
+
+/* Watchdog timer expirations */
+
+static void lpc17_polltimer(int argc, uint32_t arg, ...);
+static void lpc17_txtimeout(int argc, uint32_t arg, ...);
+
+/* NuttX callback functions */
+
+static int lpc17_ifup(struct uip_driver_s *dev);
+static int lpc17_ifdown(struct uip_driver_s *dev);
+static int lpc17_txavail(struct uip_driver_s *dev);
+#ifdef CONFIG_NET_IGMP
+static int lpc17_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+static int lpc17_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: lpc17_transmit
+ *
+ * Description:
+ * Start hardware transmission. Called either from the txdone interrupt
+ * handling or from watchdog based polling.
+ *
+ * Parameters:
+ * priv - Reference to the driver state structure
+ *
+ * Returned Value:
+ * OK on success; a negated errno on failure
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static int lpc17_transmit(FAR struct lpc17_driver_s *priv)
+{
+ /* Verify that the hardware is ready to send another packet. If we get
+ * here, then we are committed to sending a packet; Higher level logic
+ * must have assured that there is not transmission in progress.
+ */
+
+ /* Increment statistics */
+
+ /* Disable Ethernet interrupts */
+
+ /* Send the packet: address=priv->lp_dev.d_buf, length=priv->lp_dev.d_len */
+
+ /* Restore Ethernet interrupts */
+
+ /* Setup the TX timeout watchdog (perhaps restarting the timer) */
+
+ (void)wd_start(priv->lp_txtimeout, LPC17_TXTIMEOUT, lpc17_txtimeout, 1, (uint32_t)priv);
+ return OK;
+}
+
+/****************************************************************************
+ * Function: lpc17_uiptxpoll
+ *
+ * Description:
+ * The transmitter is available, check if uIP has any outgoing packets ready
+ * to send. This is a callback from uip_poll(). uip_poll() may be called:
+ *
+ * 1. When the preceding TX packet send is complete,
+ * 2. When the preceding TX packet send timesout and the interface is reset
+ * 3. During normal TX polling
+ *
+ * Parameters:
+ * dev - Reference to the NuttX driver state structure
+ *
+ * Returned Value:
+ * OK on success; a negated errno on failure
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static int lpc17_uiptxpoll(struct uip_driver_s *dev)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)dev->d_private;
+
+ /* If the polling resulted in data that should be sent out on the network,
+ * the field d_len is set to a value > 0.
+ */
+
+ if (priv->lp_dev.d_len > 0)
+ {
+ uip_arp_out(&priv->lp_dev);
+ lpc17_transmit(priv);
+
+ /* Check if there is room in the device to hold another packet. If not,
+ * return a non-zero value to terminate the poll.
+ */
+ }
+
+ /* If zero is returned, the polling will continue until all connections have
+ * been examined.
+ */
+
+ return 0;
+}
+
+/****************************************************************************
+ * Function: lpc17_receive
+ *
+ * Description:
+ * An interrupt was received indicating the availability of a new RX packet
+ *
+ * Parameters:
+ * priv - Reference to the driver state structure
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static void lpc17_receive(FAR struct lpc17_driver_s *priv)
+{
+ do
+ {
+ /* Check for errors and update statistics */
+
+ /* Check if the packet is a valid size for the uIP buffer configuration */
+
+ /* Copy the data data from the hardware to priv->lp_dev.d_buf. Set
+ * amount of data in priv->lp_dev.d_len
+ */
+
+ /* We only accept IP packets of the configured type and ARP packets */
+
+#ifdef CONFIG_NET_IPv6
+ if (BUF->type == HTONS(UIP_ETHTYPE_IP6))
+#else
+ if (BUF->type == HTONS(UIP_ETHTYPE_IP))
+#endif
+ {
+ uip_arp_ipin();
+ uip_input(&priv->lp_dev);
+
+ /* If the above function invocation resulted in data that should be
+ * sent out on the network, the field d_len will set to a value > 0.
+ */
+
+ if (priv->lp_dev.d_len > 0)
+ {
+ uip_arp_out(&priv->lp_dev);
+ lpc17_transmit(priv);
+ }
+ }
+ else if (BUF->type == htons(UIP_ETHTYPE_ARP))
+ {
+ uip_arp_arpin(&priv->lp_dev);
+
+ /* If the above function invocation resulted in data that should be
+ * sent out on the network, the field d_len will set to a value > 0.
+ */
+
+ if (priv->lp_dev.d_len > 0)
+ {
+ lpc17_transmit(priv);
+ }
+ }
+ }
+ while (); /* While there are more packets to be processed */
+}
+
+/****************************************************************************
+ * Function: lpc17_txdone
+ *
+ * Description:
+ * An interrupt was received indicating that the last TX packet(s) is done
+ *
+ * Parameters:
+ * priv - Reference to the driver state structure
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static void lpc17_txdone(FAR struct lpc17_driver_s *priv)
+{
+ /* Check for errors and update statistics */
+
+ /* If no further xmits are pending, then cancel the TX timeout */
+
+ wd_cancel(priv->lp_txtimeout);
+
+ /* Then poll uIP for new XMIT data */
+
+ (void)uip_poll(&priv->lp_dev, lpc17_uiptxpoll);
+}
+
+/****************************************************************************
+ * Function: lpc17_interrupt
+ *
+ * Description:
+ * Hardware interrupt handler
+ *
+ * Parameters:
+ * irq - Number of the IRQ that generated the interrupt
+ * context - Interrupt register state save info (architecture-specific)
+ *
+ * Returned Value:
+ * OK on success
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static int lpc17_interrupt(int irq, FAR void *context)
+{
+ register FAR struct lpc17_driver_s *priv = &g_ethdrvr[0];
+
+ /* Disable Ethernet interrupts */
+
+ /* Get and clear interrupt status bits */
+
+ /* Handle interrupts according to status bit settings */
+
+ /* Check if we received an incoming packet, if so, call lpc17_receive() */
+
+ lpc17_receive(priv);
+
+ /* Check is a packet transmission just completed. If so, call lpc17_txdone */
+
+ lpc17_txdone(priv);
+
+ /* Enable Ethernet interrupts (perhaps excluding the TX done interrupt if
+ * there are no pending transmissions.
+ */
+
+ return OK;
+}
+
+/****************************************************************************
+ * Function: lpc17_txtimeout
+ *
+ * Description:
+ * Our TX watchdog timed out. Called from the timer interrupt handler.
+ * The last TX never completed. Reset the hardware and start again.
+ *
+ * Parameters:
+ * argc - The number of available arguments
+ * arg - The first argument
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static void lpc17_txtimeout(int argc, uint32_t arg, ...)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)arg;
+
+ /* Increment statistics and dump debug info */
+
+ /* Then reset the hardware */
+
+ /* Then poll uIP for new XMIT data */
+
+ (void)uip_poll(&priv->lp_dev, lpc17_uiptxpoll);
+}
+
+/****************************************************************************
+ * Function: lpc17_polltimer
+ *
+ * Description:
+ * Periodic timer handler. Called from the timer interrupt handler.
+ *
+ * Parameters:
+ * argc - The number of available arguments
+ * arg - The first argument
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static void lpc17_polltimer(int argc, uint32_t arg, ...)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)arg;
+
+ /* Check if there is room in the send another TX packet. We cannot perform
+ * the TX poll if he are unable to accept another packet for transmission.
+ */
+
+ /* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
+ * might be bug here. Does this mean if there is a transmit in progress,
+ * we will missing TCP time state updates?
+ */
+
+ (void)uip_timer(&priv->lp_dev, lpc17_uiptxpoll, LPC17_POLLHSEC);
+
+ /* Setup the watchdog poll timer again */
+
+ (void)wd_start(priv->lp_txpoll, LPC17_WDDELAY, lpc17_polltimer, 1, arg);
+}
+
+/****************************************************************************
+ * Function: lpc17_ifup
+ *
+ * Description:
+ * NuttX Callback: Bring up the Ethernet interface when an IP address is
+ * provided
+ *
+ * Parameters:
+ * dev - Reference to the NuttX driver state structure
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static int lpc17_ifup(struct uip_driver_s *dev)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)dev->d_private;
+
+ ndbg("Bringing up: %d.%d.%d.%d\n",
+ dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff,
+ (dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24 );
+
+ /* Initilize Ethernet interface */
+
+ /* Set and activate a timer process */
+
+ (void)wd_start(priv->lp_txpoll, LPC17_WDDELAY, lpc17_polltimer, 1, (uint32_t)priv);
+
+ /* Enable the Ethernet interrupt */
+
+ priv->lp_bifup = true;
+ up_enable_irq(LPC17_IRQ_ETH);
+ return OK;
+}
+
+/****************************************************************************
+ * Function: lpc17_ifdown
+ *
+ * Description:
+ * NuttX Callback: Stop the interface.
+ *
+ * Parameters:
+ * dev - Reference to the NuttX driver state structure
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static int lpc17_ifdown(struct uip_driver_s *dev)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)dev->d_private;
+ irqstate_t flags;
+
+ /* Disable the Ethernet interrupt */
+
+ flags = irqsave();
+ up_disable_irq(LPC17_IRQ_ETH);
+
+ /* Cancel the TX poll timer and TX timeout timers */
+
+ wd_cancel(priv->lp_txpoll);
+ wd_cancel(priv->lp_txtimeout);
+
+ /* Reset the device */
+
+ priv->lp_bifup = false;
+ irqrestore(flags);
+ return OK;
+}
+
+/****************************************************************************
+ * Function: lpc17_txavail
+ *
+ * Description:
+ * Driver callback invoked when new TX data is available. This is a
+ * stimulus perform an out-of-cycle poll and, thereby, reduce the TX
+ * latency.
+ *
+ * Parameters:
+ * dev - Reference to the NuttX driver state structure
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ * Called in normal user mode
+ *
+ ****************************************************************************/
+
+static int lpc17_txavail(struct uip_driver_s *dev)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)dev->d_private;
+ irqstate_t flags;
+
+ flags = irqsave();
+
+ /* Ignore the notification if the interface is not yet up */
+
+ if (priv->lp_bifup)
+ {
+
+ /* Check if there is room in the hardware to hold another outgoing packet. */
+
+ /* If so, then poll uIP for new XMIT data */
+
+ (void)uip_poll(&priv->lp_dev, lpc17_uiptxpoll);
+ }
+
+ irqrestore(flags);
+ return OK;
+}
+
+/****************************************************************************
+ * Function: lpc17_addmac
+ *
+ * Description:
+ * NuttX Callback: Add the specified MAC address to the hardware multicast
+ * address filtering
+ *
+ * Parameters:
+ * dev - Reference to the NuttX driver state structure
+ * mac - The MAC address to be added
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int lpc17_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)dev->d_private;
+
+ /* Add the MAC address to the hardware multicast routing table */
+
+ return OK;
+}
+#endif
+
+/****************************************************************************
+ * Function: lpc17_rmmac
+ *
+ * Description:
+ * NuttX Callback: Remove the specified MAC address from the hardware multicast
+ * address filtering
+ *
+ * Parameters:
+ * dev - Reference to the NuttX driver state structure
+ * mac - The MAC address to be removed
+ *
+ * Returned Value:
+ * None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_NET_IGMP
+static int lpc17_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
+{
+ FAR struct lpc17_driver_s *priv = (FAR struct lpc17_driver_s *)dev->d_private;
+
+ /* Add the MAC address to the hardware multicast routing table */
+
+ return OK;
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: lpc17_initialize
+ *
+ * Description:
+ * Initialize the Ethernet driver
+ *
+ * Parameters:
+ * None
+ *
+ * Returned Value:
+ * OK on success; Negated errno on failure.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+/* Initialize the Ethernet controller and driver */
+
+int lpc17_initialize(void)
+{
+ /* Check if a Ethernet chip is recognized at its I/O base */
+
+ /* Attach the IRQ to the driver */
+
+ if (irq_attach(LPC17_IRQ_ETH, lpc17_interrupt))
+ {
+ /* We could not attach the ISR to the the interrupt */
+
+ return -EAGAIN;
+ }
+
+ /* Initialize the driver structure */
+
+ memset(g_ethdrvr, 0, CONFIG_LPC17_NINTERFACES*sizeof(struct lpc17_driver_s));
+ g_ethdrvr[0].lp_dev.d_ifup = lpc17_ifup; /* I/F down callback */
+ g_ethdrvr[0].lp_dev.d_ifdown = lpc17_ifdown; /* I/F up (new IP address) callback */
+ g_ethdrvr[0].lp_dev.d_txavail = lpc17_txavail; /* New TX data callback */
+#ifdef CONFIG_NET_IGMP
+ g_ethdrvr[0].lp_dev.d_addmac = lpc17_addmac; /* Add multicast MAC address */
+ g_ethdrvr[0].lp_dev.d_rmmac = lpc17_rmmac; /* Remove multicast MAC address */
+#endif
+ g_ethdrvr[0].lp_dev.d_private = (void*)g_ethdrvr; /* Used to recover private state from dev */
+
+ /* Create a watchdog for timing polling for and timing of transmisstions */
+
+ g_ethdrvr[0].lp_txpoll = wd_create(); /* Create periodic poll timer */
+ g_ethdrvr[0].lp_txtimeout = wd_create(); /* Create TX timeout timer */
+
+ /* Read the MAC address from the hardware into g_ethdrvr[0].lp_dev.d_mac.ether_addr_octet */
+
+ /* Register the device with the OS so that socket IOCTLs can be performed */
+
+ (void)netdev_register(&g_ethdrvr[0].lp_dev);
+ return OK;
+}
+
+#endif /* LPC17_NETHCONTROLLERS > 0 */
+#endif /* CONFIG_NET && CONFIG_LPC17_ETHERNET */