Add suport for the Stellaris LM3S6432S2E and the TI RDK-S2E

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4260 42af7a65-404d-4744-a932-0658087f49c3

8 files changed, 820 insertions, 0 deletions

diff --git a/nuttx/configs/lm3s6432-s2e/src/Makefile b/nuttx/configs/lm3s6432-s2e/src/Makefile
new file mode 100644
index 000000000..7a0b883f8
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/Makefile
@@ -0,0 +1,87 @@
+############################################################################
+# configs/lm3s6432-s2e/src/Makefile
+#
+#   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.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+CFLAGS		+= -I$(TOPDIR)/sched
+
+ASRCS		= 
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
+CSRCS		= up_boot.c up_leds.c up_ethernet.c up_ssi.c
+ifeq ($(CONFIG_NSH_ARCHINIT),y)
+CSRCS		+= up_nsh.c
+endif
+
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+SRCS		= $(ASRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ifeq ($(WINTOOL),y)
+  CFLAGS	+= -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
+else
+  CFLAGS	+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/armv7-m
+endif
+
+all: libboard$(LIBEXT)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+libboard$(LIBEXT): $(OBJS)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
+	done ; )
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	@rm -f libboard$(LIBEXT) *~ .*.swp
+	$(call CLEAN)
+
+distclean: clean
+	@rm -f Make.dep .depend
+
+-include Make.dep
diff --git a/nuttx/configs/lm3s6432-s2e/src/README.txt b/nuttx/configs/lm3s6432-s2e/src/README.txt
new file mode 100644
index 000000000..63aa5561e
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/README.txt
@@ -0,0 +1 @@
+This directory contains drivers unique to the Stellaris MDL-S2E Reference Design.
diff --git a/nuttx/configs/lm3s6432-s2e/src/lm3s6432s2e_internal.h b/nuttx/configs/lm3s6432-s2e/src/lm3s6432s2e_internal.h
new file mode 100644
index 000000000..cc474bd80
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/lm3s6432s2e_internal.h
@@ -0,0 +1,125 @@
+/************************************************************************************
+ * configs/lm3s6432-s2e/src/lm3s6432s2e_internal.h
+ *
+ *   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.
+ *
+ ************************************************************************************/
+
+#ifndef __CONFIGS_LM3S6432_S2E_SRC_LM3S6432S2E_INTERNAL_H
+#define __CONFIGS_LM3S6432_S2E_SRC_LM3S6432S2E_INTERNAL_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include "chip.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* How many SSI modules does this chip support? The LM3S6432 supports 1 SSI
+ * module (others may support more than 2 -- in such case, the following must be
+ * expanded).
+ */
+
+#if LM3S_NSSI == 0
+#  undef CONFIG_SSI0_DISABLE
+#  define CONFIG_SSI0_DISABLE 1
+#endif
+#undef CONFIG_SSI1_DISABLE
+#define CONFIG_SSI1_DISABLE 1
+
+/* LM3S6432 MDL-S2E *****************************************************************/
+
+/* GPIO Usage
+ *
+ * PIN SIGNAL            S2E Function
+ * --- ----------------- ---------------------------------------
+ *  L3 PA0/U0RX          Virtual COM port receive
+ *  M3 PA1/U0TX          Virtual COM port transmit
+ * E12 PB0/U0CTS         Virtual COM port CTS
+ * D12 PB1/U0RTS         Virtual COM port RTS
+ *  L5 PA4/SPIRX         SPI receive
+ *  M5 PA5/SPITX         SPI transmit
+ *  H2 PD2/U1RX          Virtual COM port receive
+ *  H1 PD3/U1TX          Virtual COM port transmit
+ *  L4 PA3/U1CTS/SPICLK  Virtual COM port CTS
+ *  M4 PA2/U1RTS/SPISEL  Virtual COM port RTS
+ * J11 PF0/LED1          Ethernet LED1 (green)
+ * J12 PF1/LED0          Ethernet LED0 (yellow)
+ * C11 PB2               Transciever #INVALID
+ * C12 PB3               Transciever #ENABLE
+ *  A6 PB4               Transciever ON
+ *  B7 PB5               Transciever #OFF
+ */
+
+/* GPIO for LEDs:
+ * - PF0: User LED
+ */
+
+#define LED1_GPIO     (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE  | GPIO_PORTF | 2)
+#define LED0_GPIO     (GPIO_FUNC_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTF | 3)
+
+/* GPIO for SSI0 select
+ */
+#define SSICS_GPIO    (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTA | 3)
+
+/* GPIOs for the RS-232 transciever enable/disable.
+ * Default state for these enables the transciever.
+ */
+#define XCVR_INV_GPIO (GPIO_FUNC_INPUT | GPIO_PORTB | 2)
+#define XCVR_ENA_GPIO (GPIO_FUNC_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTB | 3)
+#define XCVR_ON_GPIO  (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE  | GPIO_PORTB | 4)
+#define XCVR_OFF_GPIO (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE  | GPIO_PORTB | 5)
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Name: lm3s_ssiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the MDL-S2E.
+ *
+ ************************************************************************************/
+
+extern void weak_function lm3s_ssiinitialize(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_LM3S6432_S2E_SRC_LM3S6432S2E_INTERNAL_H */
+
diff --git a/nuttx/configs/lm3s6432-s2e/src/up_boot.c b/nuttx/configs/lm3s6432-s2e/src/up_boot.c
new file mode 100644
index 000000000..4b8fc3fcf
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/up_boot.c
@@ -0,0 +1,103 @@
+/************************************************************************************
+ * configs/lm3s6432-s2e/src/up_boot.c
+ * arch/arm/src/board/up_boot.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>
+
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "up_internal.h"
+#include "lm3s_internal.h"
+#include "lm3s6432s2e_internal.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+#if !defined(CONFIG_UART1_DISABLE) && !defined(CONFIG_SSI0_DISABLE)
+#  error Only one of UART1 and SSI0 can be enabled on this board.
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lm3s_boardinitialize
+ *
+ * Description:
+ *   All LM3S architectures must provide the following entry point.  This entry point
+ *   is called early in the intitialization -- after all memory has been configured
+ *   and mapped but before any devices have been initialized.
+ ************************************************************************************/
+
+void lm3s_boardinitialize(void)
+{
+  /* Configure SPI chip selects if 1) SSI is not disabled, and 2) the weak function
+   * lm3s_ssiinitialize() has been brought into the link.
+   */
+
+#if !defined(CONFIG_SSI0_DISABLE)
+  if (lm3s_ssiinitialize)
+    {
+      lm3s_ssiinitialize();
+    }
+#endif
+
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  up_ledinit();
+#endif
+
+  /* Configure serial transciever */
+  
+  lm3s_configgpio(XCVR_INV_GPIO);
+  lm3s_configgpio(XCVR_ENA_GPIO);
+  lm3s_configgpio(XCVR_ON_GPIO);
+  lm3s_configgpio(XCVR_OFF_GPIO);
+}
diff --git a/nuttx/configs/lm3s6432-s2e/src/up_ethernet.c b/nuttx/configs/lm3s6432-s2e/src/up_ethernet.c
new file mode 100644
index 000000000..6040c167c
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/up_ethernet.c
@@ -0,0 +1,98 @@
+/************************************************************************************
+ * configs/lm3s6432-s3e/src/up_ethernet.c
+ * arch/arm/src/board/up_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>
+
+#include <stdint.h>
+#include <debug.h>
+#include <assert.h>
+
+#include <arch/board/board.h>
+#include <net/ethernet.h>
+
+#include "up_arch.h"
+#include "chip.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lm3s_ethernetmac
+ *
+ * Description:
+ *   For the Ethernet Eval Kits, the MAC address will be stored in the non-volatile
+ *   USER0 and USER1 registers.  If CONFIG_LM3S_BOARDMAC is defined, this function
+ *   will obtain the MAC address from these registers.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_LM3S_BOARDMAC
+void lm3s_ethernetmac(struct ether_addr *ethaddr)
+{
+  uint32_t user0;
+  uint32_t user1;
+
+  /* Get the current value of the user registers */
+
+  user0 = getreg32(LM3S_FLASH_USERREG0);
+  user1 = getreg32(LM3S_FLASH_USERREG1);
+
+  nlldbg("user: %06x:%06x\n", user1 & 0x00ffffff, user0 & 0x00ffffff);
+  DEBUGASSERT(user0 != 0xffffffff && user1 != 0xffffffff);
+
+  /* Re-format that MAC address the way that uIP expects to see it */
+
+  ethaddr->ether_addr_octet[0] = ((user0 >>  0) & 0xff);
+  ethaddr->ether_addr_octet[1] = ((user0 >>  8) & 0xff);
+  ethaddr->ether_addr_octet[2] = ((user0 >> 16) & 0xff);
+  ethaddr->ether_addr_octet[3] = ((user1 >>  0) & 0xff);
+  ethaddr->ether_addr_octet[4] = ((user1 >>  8) & 0xff);
+  ethaddr->ether_addr_octet[5] = ((user1 >> 16) & 0xff);
+}
+#endif
diff --git a/nuttx/configs/lm3s6432-s2e/src/up_leds.c b/nuttx/configs/lm3s6432-s2e/src/up_leds.c
new file mode 100644
index 000000000..9a3e33793
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/up_leds.c
@@ -0,0 +1,168 @@
+/****************************************************************************
+ * configs/lm3s6432-s2e/src/up_leds.c
+ * arch/arm/src/board/up_leds.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>
+
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "up_internal.h"
+#include "lm3s_internal.h"
+#include "lm3s6432s2e_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG with
+ * CONFIG_DEBUG_VERBOSE too)
+ */
+
+#undef LED_DEBUG  /* Define to enable debug */
+
+#ifdef LED_DEBUG
+#  define leddbg  lldbg
+#  define ledvdbg llvdbg
+#else
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#ifdef LED_DEBUG
+#  define led_dumpgpio(m) lm3s_dumpgpio(LED_GPIO, m)
+#else
+#  define led_dumpgpio(m)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+static uint8_t g_nest;
+
+/****************************************************************************
+ * Name: up_ledinit
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void up_ledinit(void)
+{
+  leddbg("Initializing\n");
+
+  /* Configure Port F, Bit 2 as an output, initial value=OFF */
+
+  led_dumpgpio("up_ledinit before lm3s_configgpio()");
+  lm3s_configgpio(LED0_GPIO);
+  lm3s_configgpio(LED1_GPIO);
+  led_dumpgpio("up_ledinit after lm3s_configgpio()");
+  g_nest = 0;
+}
+
+/****************************************************************************
+ * Name: up_ledon
+ ****************************************************************************/
+
+void up_ledon(int led)
+{
+  switch (led)
+    {
+      case LED_STARTED:
+      case LED_HEAPALLOCATE:
+      default:
+        break;
+
+      case LED_INIRQ:
+      case LED_SIGNAL:
+      case LED_ASSERTION:
+      case LED_PANIC:
+        g_nest++;
+      case LED_IRQSENABLED:
+      case LED_STACKCREATED:
+        led_dumpgpio("up_ledon: before lm3s_gpiowrite()");
+        lm3s_gpiowrite(LED1_GPIO, false);
+        led_dumpgpio("up_ledon: after lm3s_gpiowrite()");
+        break;
+    }
+}
+
+/****************************************************************************
+ * Name: up_ledoff
+ ****************************************************************************/
+
+void up_ledoff(int led)
+{
+  switch (led)
+    {
+      case LED_IRQSENABLED:
+      case LED_STACKCREATED:
+      case LED_STARTED:
+      case LED_HEAPALLOCATE:
+      default:
+        break;
+
+      case LED_INIRQ:
+      case LED_SIGNAL:
+      case LED_ASSERTION:
+      case LED_PANIC:
+        if (--g_nest <= 0)
+          {
+            led_dumpgpio("up_ledoff: before lm3s_gpiowrite()");
+            lm3s_gpiowrite(LED1_GPIO, true);
+            led_dumpgpio("up_ledoff: after lm3s_gpiowrite()");
+          }
+        break;
+    }
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/nuttx/configs/lm3s6432-s2e/src/up_nsh.c b/nuttx/configs/lm3s6432-s2e/src/up_nsh.c
new file mode 100644
index 000000000..6b44eafaf
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/up_nsh.c
@@ -0,0 +1,87 @@
+/****************************************************************************
+ * config/lm3s6432-s2e/src/up_nsh.c
+ * arch/arm/src/board/up_nsh.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>
+
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/spi.h>
+#include <nuttx/mmcsd.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(...) lib_lowprintf(__VA_ARGS__)
+#  else
+#    define message(...) printf(__VA_ARGS__)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message lib_lowprintf
+#  else
+#    define message printf
+#  endif
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+  return OK;
+}
diff --git a/nuttx/configs/lm3s6432-s2e/src/up_ssi.c b/nuttx/configs/lm3s6432-s2e/src/up_ssi.c
new file mode 100644
index 000000000..7ca33c8be
--- /dev/null
+++ b/nuttx/configs/lm3s6432-s2e/src/up_ssi.c
@@ -0,0 +1,151 @@
+/************************************************************************************
+ * configs/lm3s6432-s2e/src/up_ssi.c
+ * arch/arm/src/board/up_ssi.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>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "lm3s_internal.h"
+#include "lm3s6432s2e_internal.h"
+
+#if !defined(CONFIG_SSI0_DISABLE)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#undef SSI_DEBUG   /* Define to enable debug */
+#undef SSI_VERBOSE /* Define to enable verbose debug */
+
+#ifdef SSI_DEBUG
+#  define ssidbg  lldbg
+#  ifdef SSI_VERBOSE
+#    define ssivdbg lldbg
+#  else
+#    define ssivdbg(x...)
+#  endif
+#else
+#  undef SSI_VERBOSE
+#  define ssidbg(x...)
+#  define ssivdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#ifdef SSI_VERBOSE
+#  define ssi_dumpgpio(m) lm3s_dumpgpio(SDCCS_GPIO, m)
+#else
+#  define ssi_dumpgpio(m)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lm3s_ssiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the MDL-S2E.
+ *
+ ************************************************************************************/
+
+void weak_function lm3s_ssiinitialize(void)
+{
+  /* Configure the SPI CS GPIO */
+
+  ssi_dumpgpio("lm3s_ssiinitialize() Entry)");
+  lm3s_configgpio(SSICS_GPIO);
+  ssi_dumpgpio("lm3s_ssiinitialize() Exit");
+}
+
+/****************************************************************************
+ * The external functions, lm3s_spiselect and lm3s_spistatus must be provided
+ * by board-specific logic.  The are implementations of the select and status
+ * methods SPI interface defined by struct spi_ops_s (see include/nuttx/spi.h).
+ * All othermethods (including up_spiinitialize()) are provided by common
+ * logic.  To use this common SPI logic on your board:
+ *
+ *   1. Provide lm3s_spiselect() and lm3s_spistatus() functions in your
+ *      board-specific logic.  This function will perform chip selection and
+ *      status operations using GPIOs in the way your board is configured.
+ *   2. Add a call to up_spiinitialize() in your low level initialization
+ *      logic
+ *   3. 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).
+ *
+ ****************************************************************************/
+
+void lm3s_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  ssidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  ssi_dumpgpio("lm3s_spiselect() Entry");
+
+  if (devid == SPIDEV_MMCSD)
+    {
+      /* Assert the CS pin to the card */
+
+      lm3s_gpiowrite(SDCCS_GPIO, !selected);
+    }
+  ssi_dumpgpio("lm3s_spiselect() Exit");
+}
+
+uint8_t lm3s_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  ssidbg("Returning SPI_STATUS_PRESENT\n");
+  return SPI_STATUS_PRESENT;
+}
+
+#endif /* !CONFIG_SSI0_DISABLE || !CONFIG_SSI1_DISABLE */