Add configs/sam4s-xplained

18 files changed, 1844 insertions, 21 deletions

diff --git a/nuttx/arch/arm/src/sam34/Kconfig b/nuttx/arch/arm/src/sam34/Kconfig
index a674a80f6..58085a236 100644
--- a/nuttx/arch/arm/src/sam34/Kconfig
+++ b/nuttx/arch/arm/src/sam34/Kconfig
@@ -75,52 +75,52 @@ config ARCH_CHIP_ATSAM4LS4A
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4L
 
-config CONFIG_ARCH_CHIP_ATSAM4SD32C
+config ARCH_CHIP_ATSAM4SD32C
 	bool "ATSAM4SD32C"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4SD32B
+config ARCH_CHIP_ATSAM4SD32B
 	bool "ATSAM4SD32B"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4SD16C
+config ARCH_CHIP_ATSAM4SD16C
 	bool "ATSAM4SD16C"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4SD16B
+config ARCH_CHIP_ATSAM4SD16B
 	bool "ATSAM4SD16B"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4SA16C
+config ARCH_CHIP_ATSAM4SA16C
 	bool "ATSAM4SA16C"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4SA16B
+config ARCH_CHIP_ATSAM4SA16B
 	bool "ATSAM4SA16B"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4S16C
+config ARCH_CHIP_ATSAM4S16C
 	bool "ATSAM4S16C"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4S16B
+config ARCH_CHIP_ATSAM4S16B
 	bool "ATSAM4S16B"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4S8C
+config ARCH_CHIP_ATSAM4S8C
 	bool "ATSAM4S8C"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
 
-config CONFIG_ARCH_CHIP_ATSAM4S8B
+config ARCH_CHIP_ATSAM4S8B
 	bool "ATSAM4S8B"
 	select ARCH_CORTEXM4
 	select ARCH_CHIP_SAM4S
@@ -144,8 +144,8 @@ menu "AT91SAM3/4 Peripheral Support"
 
 config SAM_PICOCACHE
 	bool "PICOCACHE"
-	depends on ARCH_CHIP_SAM4L
 	default y
+	depends on ARCH_CHIP_SAM4L
 
 config SAM34_OCD
 	bool "On-chip DEBUG"
@@ -245,7 +245,7 @@ config SAM34_UART0
 
 config SAM43_UART1
 	bool "UART 1"
-	default y
+	default n
 	depends on ARCH_CHIP_SAM4S
 	select ARCH_HAVE_UART1
 
diff --git a/nuttx/configs/Kconfig b/nuttx/configs/Kconfig
index e500819bc..b5b03b8f5 100644
--- a/nuttx/configs/Kconfig
+++ b/nuttx/configs/Kconfig
@@ -482,6 +482,15 @@ config ARCH_BOARD_SAM4L_XPLAINED
 	---help---
 		The port of NuttX to the Atmel SAM4L-Xplained Pro development board.
 
+config ARCH_BOARD_SAM4S_XPLAINED
+	bool "Atmel SAM4S-Xplained development board"
+	depends on ARCH_CHIP_ATSAM4S16C
+	select ARCH_HAVE_LEDS
+	select ARCH_HAVE_BUTTONS
+	select ARCH_HAVE_IRQBUTTONS
+	---help---
+		The port of NuttX to the Atmel SAM4S-Xplained development board.
+
 config ARCH_BOARD_SHENZHOU
 	bool "Shenzhou STM32F107 board"
 	depends on ARCH_CHIP_STM32F107VC
@@ -782,6 +791,7 @@ config ARCH_BOARD
 	default "rgmp"                if ARCH_BOARD_RGMP
 	default "sam3u-ek"            if ARCH_BOARD_SAM3UEK
 	default "sam4l-xplained"      if ARCH_BOARD_SAM4L_XPLAINED
+	default "sam4s-xplained"      if ARCH_BOARD_SAM4S_XPLAINED
 	default "shenzhou"            if ARCH_BOARD_SHENZHOU
 	default "skp16c26"            if ARCH_BOARD_SKP16C26
 	default "stm32_tiny"          if ARCH_BOARD_STM32_TINY
@@ -1005,6 +1015,9 @@ endif
 if ARCH_BOARD_SAM4L_XPLAINED
 source "configs/sam4l-xplained/Kconfig"
 endif
+if ARCH_BOARD_SAM4S_XPLAINED
+source "configs/sam4s-xplained/Kconfig"
+endif
 if ARCH_BOARD_SHENZHOU
 source "configs/shenzhou/Kconfig"
 endif
diff --git a/nuttx/configs/sam3u-ek/include/board.h b/nuttx/configs/sam3u-ek/include/board.h
index 683c15004..4c46ca724 100644
--- a/nuttx/configs/sam3u-ek/include/board.h
+++ b/nuttx/configs/sam3u-ek/include/board.h
@@ -33,8 +33,8 @@
  *
  ************************************************************************************/
 
-#ifndef __ARCH_BOARD_BOARD_H
-#define __ARCH_BOARD_BOARD_H
+#ifndef __ARCH_SAM3U_EK_INCLUDE_BOARD_H
+#define __ARCH_SAM3U_EK_INCLUDE_BOARD_H
 
 /************************************************************************************
  * Included Files
@@ -201,4 +201,4 @@ xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
 #endif
 
 #endif /* __ASSEMBLY__ */
-#endif  /* __ARCH_BOARD_BOARD_H */
+#endif  /* __ARCH_SAM3U_EK_INCLUDE_BOARD_H */
diff --git a/nuttx/configs/sam4l-xplained/include/board.h b/nuttx/configs/sam4l-xplained/include/board.h
index 691588091..de175a484 100644
--- a/nuttx/configs/sam4l-xplained/include/board.h
+++ b/nuttx/configs/sam4l-xplained/include/board.h
@@ -213,7 +213,7 @@
 #define BOARD_LED0_BIT    (1 << BOARD_LED0)
 
 /* When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
- * control LED0 as defined below.  Thus is LED0 is statically on, NuttX has
+ * control LED0 as defined below.  Thus if LED0 is statically on, NuttX has
  * successfully booted and is, apparently, running normmally.  If LED0 is
  * flashing at approximately 2Hz, then a fatal error has been detected and the
  * system has halted.
diff --git a/nuttx/configs/sam4l-xplained/src/sam4l-xplained.h b/nuttx/configs/sam4l-xplained/src/sam4l-xplained.h
index 80a03b168..ba6978a82 100644
--- a/nuttx/configs/sam4l-xplained/src/sam4l-xplained.h
+++ b/nuttx/configs/sam4l-xplained/src/sam4l-xplained.h
@@ -1,7 +1,7 @@
 /************************************************************************************
- * configs/sam3uek_eval/src/sam4l-xplained.h
+ * configs/sam4l-xplained/src/sam4l-xplained.h
  *
- *   Copyright (C) 2009-2011, 2013 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/nuttx/configs/sam4l-xplained/src/sam_cxxinitialize.c b/nuttx/configs/sam4l-xplained/src/sam_cxxinitialize.c
index fdbce87fd..1958e0918 100644
--- a/nuttx/configs/sam4l-xplained/src/sam_cxxinitialize.c
+++ b/nuttx/configs/sam4l-xplained/src/sam_cxxinitialize.c
@@ -1,5 +1,5 @@
 /************************************************************************************
- * configs/stm32f4discovery/src/sam_cxxinitialize.c
+ * configs/sam4l-xplained/src/sam_cxxinitialize.c
  *
  *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
diff --git a/nuttx/configs/sam4s-xplained/Kconfig b/nuttx/configs/sam4s-xplained/Kconfig
new file mode 100644
index 000000000..76aa30c14
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/Kconfig
@@ -0,0 +1,7 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+if ARCH_BOARD_SAM4S_XPLAINED
+endif
diff --git a/nuttx/configs/sam4s-xplained/README.txt b/nuttx/configs/sam4s-xplained/README.txt
index f584cda62..234b813fb 100644
--- a/nuttx/configs/sam4s-xplained/README.txt
+++ b/nuttx/configs/sam4s-xplained/README.txt
@@ -270,8 +270,11 @@ Buttons and LEDs
   Buttons
   -------
 
-  There is one user button labeld BP2 and connected to PA5.
-
+  The SAM4S Xplained has two mechanical buttons. One button is the RESET button
+  connected to the SAM4S reset line and the other is a generic user configurable
+  button labeled BP2 and connected to GPIO PA5. When a button is pressed it
+  will drive the I/O line to GND.
+ 
   LEDs
   ----
 
@@ -303,6 +306,10 @@ Buttons and LEDs
     LED_PANIC            The system has crashed     OFF      Blinking
     LED_IDLE             MCU is is sleep mode         Not used
 
+  Thus if D9 is statically on, NuttX has successfully booted and is,
+  apparently, running normmally.  If D10 is flashing at approximately
+  2Hz, then a fatal error has been detected and the system has halted.
+
 Serial Consoles
 ^^^^^^^^^^^^^^^
 
diff --git a/nuttx/configs/sam4s-xplained/include/board.h b/nuttx/configs/sam4s-xplained/include/board.h
new file mode 100644
index 000000000..7f60109c9
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/include/board.h
@@ -0,0 +1,281 @@
+/************************************************************************************
+ * configs/sam4s-xplained/include/board.h
+ *
+ *   Copyright (C) 2013 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 __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H
+#define __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+#  include <stdint.h>
+#  ifdef CONFIG_GPIO_IRQ
+#    include <arch/irq.h>
+#  endif
+#endif
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+#  include <stdint.h>
+#  ifdef CONFIG_GPIO_IRQ
+#    include <arch/irq.h>
+#  endif
+#endif
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Clocking *************************************************************************/
+/* After power-on reset, the sam3u device is running on a 4MHz internal RC.  These
+ * definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=48MHz.
+ */
+
+/* Main oscillator register settings */
+
+#define BOARD_CKGR_MOR_MOSCXTST    (63 << PMC_CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */
+
+/* PLLA configuration */
+
+#define BOARD_CKGR_PLLAR_MUL       (7 << PMC_CKGR_PLLAR_MUL_SHIFT)
+#define BOARD_CKGR_PLLAR_STMODE    PMC_CKGR_PLLAR_STMODE_FAST
+#define BOARD_CKGR_PLLAR_COUNT     (63 << PMC_CKGR_PLLAR_COUNT_SHIFT)
+#define BOARD_CKGR_PLLAR_DIV       PMC_CKGR_PLLAR_DIV_BYPASS
+
+/* PMC master clock register settings */
+
+#define BOARD_PMC_MCKR_CSS         PMC_MCKR_CSS_PLLA
+#define BOARD_PMC_MCKR_PRES        PMC_MCKR_PRES_DIV2
+
+/* USB UTMI PLL start-up time */
+
+#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << PMC_CKGR_UCKR_UPLLCOUNT_SHIFT)
+
+/* Resulting frequencies */
+
+#define SAM_MAINOSC_FREQUENCY      (12000000)
+#define SAM_MCK_FREQUENCY          (48000000)
+#define SAM_PLLA_FREQUENCY         (96000000)
+#define SAM_CPU_FREQUENCY          (48000000)
+
+/* HSMCI clocking
+ *
+ * Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock (MCK)
+ * divided by (2*(CLKDIV+1)).
+ *
+ *   MCI_SPEED = MCK / (2*(CLKDIV+1))
+ *   CLKDIV = MCI / MCI_SPEED / 2 - 1
+ */
+
+/* MCK = 48MHz, CLKDIV = 59, MCI_SPEED = 48MHz / 2 * (59+1) = 400 KHz */
+
+#define HSMCI_INIT_CLKDIV      (59 << HSMCI_MR_CLKDIV_SHIFT)
+
+/* MCK = 48MHz, CLKDIV = 1, MCI_SPEED = 48MHz / 2 * (1+1) = 12 MHz */
+
+#define HSMCI_MMCXFR_CLKDIV    (3 << HSMCI_MR_CLKDIV_SHIFT)
+
+/* MCK = 48MHz, CLKDIV = 0, MCI_SPEED = 48MHz / 2 * (0+1) = 24 MHz */
+
+#define HSMCI_SDXFR_CLKDIV     (0 << HSMCI_MR_CLKDIV_SHIFT)
+#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV
+
+/* LED definitions ******************************************************************/
+/* There are four LEDs on board the SAM4S Xplained board, two of these can be
+ * controlled by software in the SAM4S:
+ *
+ *   LED              GPIO
+ *   ---------------- -----
+ *   D9  Yellow LED   PC10
+ *   D10 Yellow LED   PC17
+ *
+ * Both can be illuminated by driving the GPIO output to ground (low).
+ */
+
+/* LED index values for use with sam_setled() */
+
+#define BOARD_D9          0
+#define BOARD_D10         1
+#define BOARD_NLEDS       2
+
+/* LED bits for use with sam_setleds() */
+
+#define BOARD_D9_BIT     (1 << BOARD_D9)
+#define BOARD_D10_BIT    (1 << BOARD_D10)
+
+/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
+ * defined.  In that case, the usage by the board port is defined in
+ * include/board.h and src/up_leds.c. The LEDs are used to encode OS-related
+ * events as follows:
+ *
+ *   SYMBOL                Val  Meaning                      LED state
+ *                                                          D9       D10
+ * ----------------------- ---  -----------------------  -------- --------    */
+#define LED_STARTED          0 /* NuttX has been started    OFF      OFF      */
+#define LED_HEAPALLOCATE     0 /* Heap has been allocated   OFF      OFF      */
+#define LED_IRQSENABLED      0 /* Interrupts enabled        OFF      OFF      */
+#define LED_STACKCREATED     0 /* Idle stack created        ON       OFF      */
+#define LED_INIRQ            0 /* In an interrupt             No change       */
+#define LED_SIGNAL           0 /* In a signal handler         No change       */
+#define LED_ASSERTION        0 /* An assertion failed         No change       */
+#define LED_PANIC            0 /* The system has crashed    OFF      Blinking */
+#define LED_IDLE             0 /* MCU is is sleep mode        Not used        */
+
+/* Thus if D9 is statically on, NuttX has successfully booted and is,
+ * apparently, running normmally.  If D10 is flashing at approximately
+ * 2Hz, then a fatal error has been detected and the system has halted.
+ */
+
+/* Button definitions ***************************************************************/
+/* Mechanical buttons:
+ *
+ * The SAM4S Xplained has two mechanical buttons. One button is the RESET button
+ * connected to the SAM4S reset line and the other is a generic user configurable
+ * button labeled BP2. When a button is pressed it will drive the I/O line to GND.
+ *
+ *   PA5 BP2
+ */
+
+#define BUTTON_BP2         0
+#define NUM_BUTTONS        1
+
+#define BUTTON_BP2_BIT     (1 << BUTTON_BP2)
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+/************************************************************************************
+ * Name: sam_boardinitialize
+ *
+ * Description:
+ *   All SAM3U 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 sam_boardinitialize(void);
+
+/************************************************************************************
+ * Name:  sam_ledinit, sam_setled, and sam_setleds
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LEDs.  If
+ *   CONFIG_ARCH_LEDS is not defined, then the following interfaces are available to
+ *   control the LEDs from user applications.
+ *
+ ************************************************************************************/
+
+#ifndef CONFIG_ARCH_LEDS
+void sam_ledinit(void);
+void sam_setled(int led, bool ledon);
+void sam_setleds(uint8_t ledset);
+#endif
+
+/************************************************************************************
+ * Name: up_buttoninit
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After that,
+ *   up_buttons() may be called to collect the current state of all buttons or
+ *   up_irqbutton() may be called to register button interrupt handlers.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_BUTTONS
+void up_buttoninit(void);
+
+/************************************************************************************
+ * Name: up_buttons
+ *
+ * Description:
+ *   After up_buttoninit() has been called, up_buttons() may be called to collect
+ *   the state of all buttons.  up_buttons() returns an 8-bit bit set with each bit
+ *   associated with a button.  See the BUTTON* definitions above for the meaning of
+ *   each bit in the returned value.
+ *
+ ************************************************************************************/
+
+uint8_t up_buttons(void);
+
+/************************************************************************************
+ * Name: up_irqbutton
+ *
+ * Description:
+ *   This function may be called to register an interrupt handler that will be
+ *   called when a button is depressed or released.  The ID value is one of the
+ *   BUTTON* definitions provided above. The previous interrupt handler address is
+ *   returned (so that it may restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_GPIOA_IRQ
+xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
+#endif
+#endif /* CONFIG_ARCH_BUTTONS */
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif  /* __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H */
diff --git a/nuttx/configs/sam4s-xplained/ostest/Make.defs b/nuttx/configs/sam4s-xplained/ostest/Make.defs
new file mode 100644
index 000000000..742260e29
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/ostest/Make.defs
@@ -0,0 +1,109 @@
+############################################################################
+# configs/sam4s-xplained/ostest/Make.defs
+#
+#   Copyright (C) 2013 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.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
+  MAXOPTIMIZATION = -O2
+else
+  # Linux/Cygwin-native toolchain 
+  MKDEP = $(TOPDIR)/tools/mkdeps.sh
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/ld.script
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+else
+  ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+
diff --git a/nuttx/configs/sam4s-xplained/ostest/defconfig b/nuttx/configs/sam4s-xplained/ostest/defconfig
new file mode 100644
index 000000000..5a42798ef
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/ostest/defconfig
@@ -0,0 +1,606 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Nuttx/ Configuration
+#
+CONFIG_NUTTX_NEWCONFIG=y
+
+#
+# Build Setup
+#
+# CONFIG_EXPERIMENTAL is not set
+CONFIG_HOST_LINUX=y
+# CONFIG_HOST_OSX is not set
+# CONFIG_HOST_WINDOWS is not set
+# CONFIG_HOST_OTHER is not set
+
+#
+# Build Configuration
+#
+# CONFIG_APPS_DIR="../apps"
+# CONFIG_BUILD_2PASS is not set
+
+#
+# Binary Output Formats
+#
+# CONFIG_RRLOAD_BINARY is not set
+# CONFIG_INTELHEX_BINARY is not set
+# CONFIG_MOTOROLA_SREC is not set
+CONFIG_RAW_BINARY=y
+
+#
+# Customize Header Files
+#
+# CONFIG_ARCH_STDBOOL_H is not set
+# CONFIG_ARCH_MATH_H is not set
+# CONFIG_ARCH_FLOAT_H is not set
+# CONFIG_ARCH_STDARG_H is not set
+
+#
+# Debug Options
+#
+# CONFIG_DEBUG is not set
+# CONFIG_DEBUG_SYMBOLS is not set
+
+#
+# System Type
+#
+# CONFIG_ARCH_8051 is not set
+CONFIG_ARCH_ARM=y
+# CONFIG_ARCH_AVR is not set
+# CONFIG_ARCH_HC is not set
+# CONFIG_ARCH_MIPS is not set
+# CONFIG_ARCH_RGMP is not set
+# CONFIG_ARCH_SH is not set
+# CONFIG_ARCH_SIM is not set
+# CONFIG_ARCH_X86 is not set
+# CONFIG_ARCH_Z16 is not set
+# CONFIG_ARCH_Z80 is not set
+CONFIG_ARCH="arm"
+
+#
+# ARM Options
+#
+# CONFIG_ARCH_CHIP_C5471 is not set
+# CONFIG_ARCH_CHIP_CALYPSO is not set
+# CONFIG_ARCH_CHIP_DM320 is not set
+# CONFIG_ARCH_CHIP_IMX is not set
+# CONFIG_ARCH_CHIP_KINETIS is not set
+# CONFIG_ARCH_CHIP_KL is not set
+# CONFIG_ARCH_CHIP_LM is not set
+# CONFIG_ARCH_CHIP_LPC17XX is not set
+# CONFIG_ARCH_CHIP_LPC214X is not set
+# CONFIG_ARCH_CHIP_LPC2378 is not set
+# CONFIG_ARCH_CHIP_LPC31XX is not set
+# CONFIG_ARCH_CHIP_LPC43XX is not set
+# CONFIG_ARCH_CHIP_NUC1XX is not set
+CONFIG_ARCH_CHIP_SAM34=y
+# CONFIG_ARCH_CHIP_STM32 is not set
+# CONFIG_ARCH_CHIP_STR71X is not set
+CONFIG_ARCH_CORTEXM4=y
+CONFIG_ARCH_FAMILY="armv7-m"
+CONFIG_ARCH_CHIP="sam34"
+# CONFIG_ARMV7M_USEBASEPRI is not set
+# CONFIG_ARCH_HAVE_FPU is not set
+CONFIG_ARCH_HAVE_MPU=y
+# CONFIG_ARMV7M_MPU is not set
+
+#
+# ARMV7M Configuration Options
+#
+CONFIG_ARMV7M_TOOLCHAIN_BUILDROOT=y
+# CONFIG_ARMV7M_TOOLCHAIN_CODEREDL is not set
+# CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYL is not set
+# CONFIG_ARMV7M_TOOLCHAIN_GNU_EABI is not set
+CONFIG_ARMV7M_OABI_TOOLCHAIN=y
+
+#
+# AT91SAM3/4 Configuration Options
+#
+# CONFIG_ARCH_CHIP_AT91SAM3U4E is not set
+# CONFIG_ARCH_CHIP_SAM34_NDMACHANC2C is not set
+# CONFIG_ARCH_CHIP_ATSAM4LC2B is not set
+# CONFIG_ARCH_CHIP_ATSAM4LC2A is not set
+# CONFIG_ARCH_CHIP_ATSAM4LC4C is not set
+# CONFIG_ARCH_CHIP_ATSAM4LC4B is not set
+# CONFIG_ARCH_CHIP_ATSAM4LC4A is not set
+# CONFIG_ARCH_CHIP_ATSAM4LS2C is not set
+# CONFIG_ARCH_CHIP_ATSAM4LS2B is not set
+# CONFIG_ARCH_CHIP_ATSAM4LS2A is not set
+# CONFIG_ARCH_CHIP_ATSAM4LS4C is not set
+# CONFIG_ARCH_CHIP_ATSAM4LS4B is not set
+# CONFIG_ARCH_CHIP_ATSAM4LS4A is not set
+# CONFIG_ARCH_CHIP_ATSAM4SD32C is not set
+# CONFIG_ARCH_CHIP_ATSAM4SD32B is not set
+# CONFIG_ARCH_CHIP_ATSAM4SD16C is not set
+# CONFIG_ARCH_CHIP_ATSAM4SD16B is not set
+# CONFIG_ARCH_CHIP_ATSAM4SA16C is not set
+# CONFIG_ARCH_CHIP_ATSAM4SA16B is not set
+CONFIG_ARCH_CHIP_ATSAM4S16C=y
+# CONFIG_ARCH_CHIP_ATSAM4S16B is not set
+# CONFIG_ARCH_CHIP_ATSAM4S8C is not set
+# CONFIG_ARCH_CHIP_ATSAM4S8B is not set
+# CONFIG_ARCH_CHIP_SAM3U is not set
+# CONFIG_ARCH_CHIP_SAM4L is not set
+CONFIG_ARCH_CHIP_SAM4S=y
+
+#
+# AT91SAM3/4 Peripheral Support
+#
+# CONFIG_SAM34_SSC is not set
+# CONFIG_SAM34_TC0 is not set
+# CONFIG_SAM34_TC1 is not set
+# CONFIG_SAM34_TC2 is not set
+# CONFIG_SAM34_TC3 is not set
+# CONFIG_SAM34_TC4 is not set
+# CONFIG_SAM34_TC5 is not set
+# CONFIG_SAM34_PWM is not set
+# CONFIG_SAM34_TWIM0 is not set
+# CONFIG_SAM34_TWIS0 is not set
+# CONFIG_SAM34_TWIM1 is not set
+# CONFIG_SAM34_TWIS1 is not set
+# CONFIG_SAM34_UART0 is not set
+# CONFIG_SAM43_UART1 is not set
+CONFIG_SAM34_USART0=y
+# CONFIG_SAM34_USART1 is not set
+# CONFIG_SAM34_ADC12B is not set
+# CONFIG_SAM34_DACC is not set
+# CONFIG_SAM34_ACC is not set
+# CONFIG_SAM34_SMC is not set
+# CONFIG_SAM34_PDCA is not set
+# CONFIG_SAM34_CRCCU is not set
+# CONFIG_SAM34_UDP is not set
+# CONFIG_SAM34_RTC is not set
+# CONFIG_SAM34_RTT is not set
+# CONFIG_SAM34_WDT is not set
+# CONFIG_SAM34_HSMCI is not set
+
+#
+# AT91SAM3/4 USART Configuration
+#
+CONFIG_USART0_ISUART=y
+
+#
+# AT91SAM3/4 GPIO Interrupt Configuration
+#
+# CONFIG_GPIOA_IRQ is not set
+# CONFIG_GPIOB_IRQ is not set
+# CONFIG_GPIOC_IRQ is not set
+
+#
+# External Memory Configuration
+#
+
+#
+# Architecture Options
+#
+# CONFIG_ARCH_NOINTC is not set
+# CONFIG_ARCH_VECNOTIRQ is not set
+# CONFIG_ARCH_DMA is not set
+CONFIG_ARCH_IRQPRIO=y
+# CONFIG_CUSTOM_STACK is not set
+# CONFIG_ADDRENV is not set
+CONFIG_ARCH_HAVE_VFORK=y
+CONFIG_ARCH_STACKDUMP=y
+# CONFIG_ENDIAN_BIG is not set
+CONFIG_ARCH_HAVE_RAMFUNCS=y
+CONFIG_ARCH_RAMFUNCS=y
+CONFIG_ARCH_HAVE_RAMVECTORS=y
+# CONFIG_ARCH_RAMVECTORS is not set
+
+#
+# Board Settings
+#
+CONFIG_BOARD_LOOPSPERMSEC=4768
+# CONFIG_ARCH_CALIBRATION is not set
+CONFIG_DRAM_START=0x20000000
+CONFIG_DRAM_SIZE=32768
+CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
+CONFIG_ARCH_INTERRUPTSTACK=0
+
+#
+# Boot options
+#
+# CONFIG_BOOT_RUNFROMEXTSRAM is not set
+CONFIG_BOOT_RUNFROMFLASH=y
+# CONFIG_BOOT_RUNFROMISRAM is not set
+# CONFIG_BOOT_RUNFROMSDRAM is not set
+# CONFIG_BOOT_COPYTORAM is not set
+
+#
+# Board Selection
+#
+CONFIG_ARCH_BOARD_SAM4S_XPLAINED=y
+# CONFIG_ARCH_BOARD_CUSTOM is not set
+CONFIG_ARCH_BOARD="sam4s-xplained"
+
+#
+# Common Board Options
+#
+CONFIG_ARCH_HAVE_LEDS=y
+CONFIG_ARCH_LEDS=y
+CONFIG_ARCH_HAVE_BUTTONS=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_HAVE_IRQBUTTONS=y
+# CONFIG_ARCH_IRQBUTTONS is not set
+
+#
+# Board-Specific Options
+#
+
+#
+# RTOS Features
+#
+# CONFIG_BOARD_INITIALIZE is not set
+CONFIG_MSEC_PER_TICK=10
+CONFIG_RR_INTERVAL=200
+# CONFIG_SCHED_INSTRUMENTATION is not set
+CONFIG_TASK_NAME_SIZE=0
+# CONFIG_SCHED_HAVE_PARENT is not set
+# CONFIG_JULIAN_TIME is not set
+CONFIG_START_YEAR=2013
+CONFIG_START_MONTH=6
+CONFIG_START_DAY=3
+CONFIG_DEV_CONSOLE=y
+# CONFIG_MUTEX_TYPES is not set
+# CONFIG_PRIORITY_INHERITANCE is not set
+# CONFIG_FDCLONE_DISABLE is not set
+# CONFIG_FDCLONE_STDIO is not set
+CONFIG_SDCLONE_DISABLE=y
+# CONFIG_SCHED_WAITPID is not set
+# CONFIG_SCHED_STARTHOOK is not set
+# CONFIG_SCHED_ATEXIT is not set
+# CONFIG_SCHED_ONEXIT is not set
+CONFIG_USER_ENTRYPOINT="ostest_main"
+CONFIG_DISABLE_OS_API=y
+# CONFIG_DISABLE_CLOCK is not set
+# CONFIG_DISABLE_POSIX_TIMERS is not set
+# CONFIG_DISABLE_PTHREAD is not set
+# CONFIG_DISABLE_SIGNALS is not set
+# CONFIG_DISABLE_MQUEUE is not set
+CONFIG_DISABLE_ENVIRON=y
+
+#
+# Signal Numbers
+#
+CONFIG_SIG_SIGUSR1=1
+CONFIG_SIG_SIGUSR2=2
+CONFIG_SIG_SIGALARM=3
+CONFIG_SIG_SIGCONDTIMEDOUT=16
+
+#
+# Sizes of configurable things (0 disables)
+#
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASK_ARGS=4
+CONFIG_NPTHREAD_KEYS=4
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NAME_MAX=32
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_MQ_MAXMSGSIZE=32
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_PREALLOC_TIMERS=4
+
+#
+# Stack and heap information
+#
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=2048
+
+#
+# Device Drivers
+#
+CONFIG_DISABLE_POLL=y
+CONFIG_DEV_NULL=y
+# CONFIG_DEV_ZERO is not set
+# CONFIG_LOOP is not set
+# CONFIG_RAMDISK is not set
+# CONFIG_CAN is not set
+# CONFIG_PWM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_RTC is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_ANALOG is not set
+# CONFIG_AUDIO_DEVICES is not set
+# CONFIG_BCH is not set
+# CONFIG_INPUT is not set
+# CONFIG_LCD is not set
+# CONFIG_MMCSD is not set
+# CONFIG_MTD is not set
+# CONFIG_PIPES is not set
+# CONFIG_PM is not set
+# CONFIG_POWER is not set
+# CONFIG_SENSORS is not set
+CONFIG_SERIAL=y
+CONFIG_DEV_LOWCONSOLE=y
+# CONFIG_16550_UART is not set
+CONFIG_ARCH_HAVE_USART0=y
+CONFIG_MCU_SERIAL=y
+CONFIG_USART0_SERIAL_CONSOLE=y
+# CONFIG_NO_SERIAL_CONSOLE is not set
+
+#
+# USART0 Configuration
+#
+CONFIG_USART0_RXBUFSIZE=256
+CONFIG_USART0_TXBUFSIZE=256
+CONFIG_USART0_BAUD=115200
+CONFIG_USART0_BITS=8
+CONFIG_USART0_PARITY=0
+CONFIG_USART0_2STOP=0
+# CONFIG_USART0_IFLOWCONTROL is not set
+# CONFIG_USART0_OFLOWCONTROL is not set
+# CONFIG_SERIAL_IFLOWCONTROL is not set
+# CONFIG_SERIAL_OFLOWCONTROL is not set
+# CONFIG_USBDEV is not set
+# CONFIG_USBHOST is not set
+# CONFIG_WIRELESS is not set
+
+#
+# System Logging Device Options
+#
+
+#
+# System Logging
+#
+# CONFIG_RAMLOG is not set
+
+#
+# Networking Support
+#
+# CONFIG_NET is not set
+
+#
+# File Systems
+#
+
+#
+# File system configuration
+#
+CONFIG_DISABLE_MOUNTPOINT=y
+# CONFIG_FS_RAMMAP is not set
+
+#
+# System Logging
+#
+# CONFIG_SYSLOG_ENABLE is not set
+# CONFIG_SYSLOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_NX is not set
+
+#
+# Memory Management
+#
+# CONFIG_MM_MULTIHEAP is not set
+# CONFIG_MM_SMALL is not set
+CONFIG_MM_REGIONS=3
+# CONFIG_GRAN is not set
+
+#
+# Audio Support
+#
+# CONFIG_AUDIO is not set
+
+#
+# Binary Formats
+#
+# CONFIG_BINFMT_DISABLE is not set
+# CONFIG_NXFLAT is not set
+# CONFIG_ELF is not set
+# CONFIG_BUILTIN is not set
+# CONFIG_PIC is not set
+# CONFIG_SYMTAB_ORDEREDBYNAME is not set
+
+#
+# Library Routines
+#
+
+#
+# Standard C Library Options
+#
+CONFIG_STDIO_BUFFER_SIZE=64
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=2
+# CONFIG_LIBM is not set
+# CONFIG_NOPRINTF_FIELDWIDTH is not set
+# CONFIG_LIBC_FLOATINGPOINT is not set
+CONFIG_LIB_RAND_ORDER=1
+# CONFIG_EOL_IS_CR is not set
+# CONFIG_EOL_IS_LF is not set
+# CONFIG_EOL_IS_BOTH_CRLF is not set
+CONFIG_EOL_IS_EITHER_CRLF=y
+# CONFIG_LIBC_EXECFUNCS is not set
+CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=2048
+# CONFIG_LIBC_STRERROR is not set
+# CONFIG_LIBC_PERROR_STDOUT is not set
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_LIB_SENDFILE_BUFSIZE=512
+# CONFIG_ARCH_ROMGETC is not set
+# CONFIG_ARCH_OPTIMIZED_FUNCTIONS is not set
+
+#
+# Non-standard Library Support
+#
+# CONFIG_SCHED_WORKQUEUE is not set
+# CONFIG_LIB_KBDCODEC is not set
+# CONFIG_LIB_SLCDCODEC is not set
+
+#
+# Basic CXX Support
+#
+# CONFIG_C99_BOOL8 is not set
+# CONFIG_HAVE_CXX is not set
+
+#
+# Application Configuration
+#
+
+#
+# Built-In Applications
+#
+
+#
+# Examples
+#
+# CONFIG_EXAMPLES_BUTTONS is not set
+# CONFIG_EXAMPLES_CAN is not set
+# CONFIG_EXAMPLES_COMPOSITE is not set
+# CONFIG_EXAMPLES_DHCPD is not set
+# CONFIG_EXAMPLES_ELF is not set
+# CONFIG_EXAMPLES_FTPC is not set
+# CONFIG_EXAMPLES_FTPD is not set
+# CONFIG_EXAMPLES_HELLO is not set
+# CONFIG_EXAMPLES_HELLOXX is not set
+# CONFIG_EXAMPLES_JSON is not set
+# CONFIG_EXAMPLES_HIDKBD is not set
+# CONFIG_EXAMPLES_KEYPADTEST is not set
+# CONFIG_EXAMPLES_IGMP is not set
+# CONFIG_EXAMPLES_LCDRW is not set
+# CONFIG_EXAMPLES_MM is not set
+# CONFIG_EXAMPLES_MODBUS is not set
+# CONFIG_EXAMPLES_MOUNT is not set
+# CONFIG_EXAMPLES_NRF24L01TERM is not set
+# CONFIG_EXAMPLES_NSH is not set
+# CONFIG_EXAMPLES_NULL is not set
+# CONFIG_EXAMPLES_NX is not set
+# CONFIG_EXAMPLES_NXCONSOLE is not set
+# CONFIG_EXAMPLES_NXFFS is not set
+# CONFIG_EXAMPLES_NXFLAT is not set
+# CONFIG_EXAMPLES_NXHELLO is not set
+# CONFIG_EXAMPLES_NXIMAGE is not set
+# CONFIG_EXAMPLES_NXLINES is not set
+# CONFIG_EXAMPLES_NXTEXT is not set
+CONFIG_EXAMPLES_OSTEST=y
+# CONFIG_EXAMPLES_OSTEST_BUILTIN is not set
+CONFIG_EXAMPLES_OSTEST_LOOPS=1
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=2048
+CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
+CONFIG_EXAMPLES_OSTEST_RR_RANGE=10000
+CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
+# CONFIG_EXAMPLES_PASHELLO is not set
+# CONFIG_EXAMPLES_PIPE is not set
+# CONFIG_EXAMPLES_POLL is not set
+# CONFIG_EXAMPLES_POSIXSPAWN is not set
+# CONFIG_EXAMPLES_QENCODER is not set
+# CONFIG_EXAMPLES_RGMP is not set
+# CONFIG_EXAMPLES_ROMFS is not set
+# CONFIG_EXAMPLES_SENDMAIL is not set
+# CONFIG_EXAMPLES_SERLOOP is not set
+# CONFIG_EXAMPLES_SLCD is not set
+# CONFIG_EXAMPLES_SMART is not set
+# CONFIG_EXAMPLES_TCPECHO is not set
+# CONFIG_EXAMPLES_TELNETD is not set
+# CONFIG_EXAMPLES_THTTPD is not set
+# CONFIG_EXAMPLES_TIFF is not set
+# CONFIG_EXAMPLES_TOUCHSCREEN is not set
+# CONFIG_EXAMPLES_UDP is not set
+# CONFIG_EXAMPLES_UIP is not set
+# CONFIG_EXAMPLES_USBSERIAL is not set
+# CONFIG_EXAMPLES_USBMSC is not set
+# CONFIG_EXAMPLES_USBTERM is not set
+# CONFIG_EXAMPLES_WATCHDOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_TIFF is not set
+
+#
+# Interpreters
+#
+# CONFIG_INTERPRETERS_FICL is not set
+# CONFIG_INTERPRETERS_PCODE is not set
+
+#
+# Network Utilities
+#
+
+#
+# Networking Utilities
+#
+# CONFIG_NETUTILS_CODECS is not set
+# CONFIG_NETUTILS_DHCPC is not set
+# CONFIG_NETUTILS_DHCPD is not set
+# CONFIG_NETUTILS_FTPC is not set
+# CONFIG_NETUTILS_FTPD is not set
+# CONFIG_NETUTILS_JSON is not set
+# CONFIG_NETUTILS_RESOLV is not set
+# CONFIG_NETUTILS_SMTP is not set
+# CONFIG_NETUTILS_TELNETD is not set
+# CONFIG_NETUTILS_TFTPC is not set
+# CONFIG_NETUTILS_THTTPD is not set
+# CONFIG_NETUTILS_UIPLIB is not set
+# CONFIG_NETUTILS_WEBCLIENT is not set
+
+#
+# FreeModBus
+#
+# CONFIG_MODBUS is not set
+
+#
+# NSH Library
+#
+# CONFIG_NSH_LIBRARY is not set
+
+#
+# NxWidgets/NxWM
+#
+
+#
+# System NSH Add-Ons
+#
+
+#
+# Custom Free Memory Command
+#
+# CONFIG_SYSTEM_FREE is not set
+
+#
+# I2C tool
+#
+
+#
+# FLASH Program Installation
+#
+# CONFIG_SYSTEM_INSTALL is not set
+
+#
+# FLASH Erase-all Command
+#
+
+#
+# readline()
+#
+# CONFIG_SYSTEM_READLINE is not set
+
+#
+# Power Off
+#
+# CONFIG_SYSTEM_POWEROFF is not set
+
+#
+# RAMTRON
+#
+# CONFIG_SYSTEM_RAMTRON is not set
+
+#
+# SD Card
+#
+# CONFIG_SYSTEM_SDCARD is not set
+
+#
+# Sysinfo
+#
+# CONFIG_SYSTEM_SYSINFO is not set
+
+#
+# USB Monitor
+#
diff --git a/nuttx/configs/sam4s-xplained/ostest/setenv.sh b/nuttx/configs/sam4s-xplained/ostest/setenv.sh
new file mode 100755
index 000000000..f6ddcb085
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/ostest/setenv.sh
@@ -0,0 +1,63 @@
+#!/bin/bash
+# configs/sam4s-xplained/ostest/setenv.sh
+#
+#   Copyright (C) 2013 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.
+#
+
+
+if [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+  export PATH_ORIG="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/sam4s-xplained/scripts/ld.script b/nuttx/configs/sam4s-xplained/scripts/ld.script
new file mode 100755
index 000000000..d653f0bb0
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/scripts/ld.script
@@ -0,0 +1,121 @@
+/****************************************************************************
+ * configs/sam4s-xplained/scripts/ld.script
+ *
+ *   Copyright (C) 2013 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.
+ *
+ ****************************************************************************/
+
+/* The ATSAM4S16C has 1MB of FLASH beginning at address 0x0000:0000 and
+ * 128KB of SRAM beginning at address 0x2000:0000
+ */
+
+MEMORY
+{
+    flash (rx)  : ORIGIN = 0x00000000, LENGTH = 1024K
+    sram  (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
+}
+
+OUTPUT_ARCH(arm)
+ENTRY(_stext)
+SECTIONS
+{
+	.text : {
+		_stext = ABSOLUTE(.);
+		*(.vectors)
+		*(.text .text.*)
+		*(.fixup)
+		*(.gnu.warning)
+		*(.rodata .rodata.*)
+		*(.gnu.linkonce.t.*)
+		*(.glue_7)
+		*(.glue_7t)
+		*(.got)
+		*(.gcc_except_table)
+		*(.gnu.linkonce.r.*)
+		_etext = ABSOLUTE(.);
+	} > flash
+
+	.init_section : {
+		_sinit = ABSOLUTE(.);
+		*(.init_array .init_array.*)
+		_einit = ABSOLUTE(.);
+	} > flash
+
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} >flash
+
+	__exidx_start = ABSOLUTE(.);
+	.ARM.exidx : {
+		*(.ARM.exidx*)
+	} >flash
+	__exidx_end = ABSOLUTE(.);
+
+	.data : {
+		_sdata = ABSOLUTE(.);
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		CONSTRUCTORS
+		_edata = ABSOLUTE(.);
+	} > sram AT > flash
+
+	_eronly = LOADADDR(.data);
+
+	.ramfunc ALIGN(4): {
+		_sramfuncs = ABSOLUTE(.);
+		*(.ramfunc  .ramfunc.*)
+		_eramfuncs = ABSOLUTE(.);
+	} > sram AT > flash
+
+	_framfuncs = LOADADDR(.ramfunc);
+
+	.bss : {
+		_sbss = ABSOLUTE(.);
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		_ebss = ABSOLUTE(.);
+	} > sram
+
+	/* Stabs debugging sections. */
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_info 0 : { *(.debug_info) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+	.debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/nuttx/configs/sam4s-xplained/src/Makefile b/nuttx/configs/sam4s-xplained/src/Makefile
new file mode 100644
index 000000000..80d8f4719
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/src/Makefile
@@ -0,0 +1,100 @@
+############################################################################
+# configs/sam4s-xplained/src/Makefile
+#
+#   Copyright (C) 2013 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.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+CFLAGS += -I$(TOPDIR)/sched
+
+ASRCS =
+AOBJS = $(ASRCS:.S=$(OBJEXT))
+
+CSRCS = sam_boot.c
+
+ifeq ($(CONFIG_HAVE_CXX),y)
+CSRCS += sam_cxxinitialize.c
+endif
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += sam_autoleds.c
+else
+CSRCS += sam_userleds.c
+endif
+
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += sam_buttons.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 $(ARCH_SRCDIR)/chip}"
+  CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/common}"
+  CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
+else
+  CFLAGS += -I$(ARCH_SRCDIR)/chip
+  CFLAGS += -I$(ARCH_SRCDIR)/common
+  CFLAGS += -I$(ARCH_SRCDIR)/armv7-m
+endif
+
+all: libboard$(LIBEXT)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+libboard$(LIBEXT): $(OBJS)
+	$(call ARCHIVE, $@, $(OBJS))
+
+.depend: Makefile $(SRCS)
+	$(Q) $(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	$(Q) touch $@
+
+depend: .depend
+
+clean:
+	$(call DELFILE, libboard$(LIBEXT))
+	$(call CLEAN)
+
+distclean: clean
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
+
+-include Make.dep
diff --git a/nuttx/configs/sam4s-xplained/src/sam4s-xplained.h b/nuttx/configs/sam4s-xplained/src/sam4s-xplained.h
new file mode 100644
index 000000000..ce806ae5e
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/src/sam4s-xplained.h
@@ -0,0 +1,132 @@
+/************************************************************************************
+ * configs/sam3uek_eval/src/sam4s-xplained.h
+ *
+ *   Copyright (C) 2009-2011, 2013 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 __CONFIGS_SAM4S_XPLAINED_SRC_SAM4S_XPLAINED_H
+#define __CONFIGS_SAM4S_XPLAINED_SRC_SAM4S_XPLAINED_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include <stdint.h>
+
+#include <arch/irq.h>
+#include <nuttx/irq.h>
+
+#include "chip/sam_pinmap.h"
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+/* There are four LEDs on board the SAM4S Xplained board, two of these can be
+ * controlled by software in the SAM4S:
+ *
+ *   LED              GPIO
+ *   ---------------- -----
+ *   D9  Yellow LED   PC10
+ *   D10 Yellow LED   PC17
+ *
+ * Both can be illuminated by driving the GPIO output to ground (low).
+ *
+ * These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
+ * defined.  In that case, the usage by the board port is defined in
+ * include/board.h and src/up_leds.c. The LEDs are used to encode OS-related
+ * events as follows:
+ *
+ *   SYMBOL                Meaning                     LED state
+ *                                                   D9     D10
+ *   -------------------  -----------------------  -------- --------
+ *   LED_STARTED          NuttX has been started     OFF      OFF
+ *   LED_HEAPALLOCATE     Heap has been allocated    OFF      OFF
+ *   LED_IRQSENABLED      Interrupts enabled         OFF      OFF
+ *   LED_STACKCREATED     Idle stack created         ON       OFF
+ *   LED_INIRQ            In an interrupt              No change
+ *   LED_SIGNAL           In a signal handler          No change
+ *   LED_ASSERTION        An assertion failed          No change
+ *   LED_PANIC            The system has crashed     OFF      Blinking
+ *   LED_IDLE             MCU is is sleep mode         Not used
+ *
+ * Thus if D9 is statically on, NuttX has successfully booted and is,
+ * apparently, running normmally.  If D10 is flashing at approximately
+ * 2Hz, then a fatal error has been detected and the system has halted.
+ */
+
+
+#define GPIO_D9     (GPIO_OUTPUT | GPIO_PULL_UP | GPIO_OUTPUT_SET | \
+                     GPIO_PORTC | GPIO_PIN10)
+#define GPIO_D10    (GPIO_OUTPUT | GPIO_PULL_UP | GPIO_OUTPUT_SET | \
+                     GPIO_PORTC | GPIO_PIN17)
+
+/* Mechanical buttons:
+ *
+ * The SAM4S Xplained has two mechanical buttons. One button is the RESET button
+ * connected to the SAM4S reset line and the other is a generic user configurable
+ * button labeled BP2. When a button is pressed it will drive the I/O line to GND.
+ *
+ *   PA5 BP2
+ */
+
+#define GPIO_BP2      (GPIO_INPUT | GPIO_PULL_UP | GPIO_GLITCH_FILTER | \
+                       GPIO_PORTA | GPIO_PIN5)
+#define IRQ_BP2       SAM_IRQ_PA5
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name: up_ledinit
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void up_ledinit(void);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_SAM4S_XPLAINED_SRC_SAM4S_XPLAINED_H */
+
diff --git a/nuttx/configs/sam4s-xplained/src/sam_boot.c b/nuttx/configs/sam4s-xplained/src/sam_boot.c
new file mode 100644
index 000000000..54d29053e
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/src/sam_boot.c
@@ -0,0 +1,75 @@
+/************************************************************************************
+ * configs/sam4s-xplained/src/sam_boot.c
+ *
+ *   Copyright (C) 2013 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 <debug.h>
+
+#include "sam4s-xplained.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: sam_boardinitialize
+ *
+ * Description:
+ *   All SAM3U 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 sam_boardinitialize(void)
+{
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  up_ledinit();
+#endif
+}
diff --git a/nuttx/configs/sam4s-xplained/src/sam_buttons.c b/nuttx/configs/sam4s-xplained/src/sam_buttons.c
new file mode 100644
index 000000000..fe5c0b776
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/src/sam_buttons.c
@@ -0,0 +1,155 @@
+/****************************************************************************
+ * configs/sam4s-xplained/src/sam_buttons.c
+ *
+ *   Copyright (C) 2013 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 <nuttx/irq.h>
+
+#include <arch/irq.h>
+#include <arch/board/board.h>
+
+#include "sam_gpio.h"
+#include "sam4s-xplained.h"
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static xcpt_t g_irqbp2;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_buttoninit
+ *
+ * Description:
+ *   up_buttoninit() must be called to initialize button resources.  After
+ *   that, up_buttons() may be called to collect the current state of all
+ *   buttons or up_irqbutton() may be called to register button interrupt
+ *   handlers.
+ *
+ ****************************************************************************/
+
+void up_buttoninit(void)
+{
+  (void)sam_configgpio(GPIO_BP2);
+}
+
+/************************************************************************************
+ * Name: up_buttons
+ *
+ * Description:
+ *   After up_buttoninit() has been called, up_buttons() may be called to collect
+ *   the state of all buttons.  up_buttons() returns an 8-bit bit set with each bit
+ *   associated with a button.  See the BUTTON* definitions above for the meaning of
+ *   each bit in the returned value.
+ *
+ ************************************************************************************/
+
+uint8_t up_buttons(void)
+{
+  return sam_gpioread(GPIO_BP2) ? 0 : BUTTON_BP2_BIT;
+}
+
+/****************************************************************************
+ * Name: up_irqbutton
+ *
+ * Description:
+ *   This function may be called to register an interrupt handler that will
+ *   be called when a button is depressed or released.  The ID value is one
+ *   of the BUTTON* definitions provided above. The previous interrupt
+ *   handler address isreturned (so that it may restored, if so desired).
+ *
+ * Configuration Notes:
+ *   Configuration CONFIG_AVR32_GPIOIRQ must be selected to enable the
+ *   overall GPIO IRQ feature and CONFIG_AVR32_GPIOIRQSETA and/or
+ *   CONFIG_AVR32_GPIOIRQSETB must be enabled to select GPIOs to support
+ *   interrupts on.  For button support, bits 2 and 3 must be set in
+ *   CONFIG_AVR32_GPIOIRQSETB (PB2 and PB3).
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_GPIOA_IRQ) && defined(CONFIG_ARCH_IRQBUTTONS)
+xcpt_t up_irqbutton(int id, xcpt_t irqhandler)
+{
+  xcpt_t oldhandler = NULL;
+
+  if (id == BUTTON_BP2)
+    {
+      irqstate_t flags;
+
+      /* Disable interrupts until we are done.  This guarantees that the
+       * following operations are atomic.
+       */
+
+      flags = irqsave();
+
+      /* Get the old button interrupt handler and save the new one */
+
+      oldhandler = *g_irqbp2;
+      *g_irqbp2 = irqhandler;
+
+      /* Configure the interrupt */
+
+      sam_gpioirq(IRQ_BP2);
+      (void)irq_attach(IRQ_BP2, irqhandler);
+      sam_gpioirqenable(IRQ_BP2);
+    }
+
+  /* Return the old button handler (so that it can be restored) */
+
+  return oldhandler;
+}
+#endif
+
+#endif /* CONFIG_ARCH_BUTTONS */
diff --git a/nuttx/configs/sam4s-xplained/src/sam_cxxinitialize.c b/nuttx/configs/sam4s-xplained/src/sam_cxxinitialize.c
new file mode 100644
index 000000000..0fd845488
--- /dev/null
+++ b/nuttx/configs/sam4s-xplained/src/sam_cxxinitialize.c
@@ -0,0 +1,154 @@
+/************************************************************************************
+ * configs/sam4s-xplained/src/sam_cxxinitialize.c
+ *
+ *   Copyright (C) 2013 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 <debug.h>
+
+#include <nuttx/arch.h>
+
+#include <arch/sam34/chip.h>
+#include "chip.h"
+
+#if defined(CONFIG_HAVE_CXX) && defined(CONFIG_HAVE_CXXINITIALIZE)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Debug ****************************************************************************/
+/* Non-standard debug that may be enabled just for testing the static constructors */
+
+#ifndef CONFIG_DEBUG
+#  undef CONFIG_DEBUG_CXX
+#endif
+
+#ifdef CONFIG_DEBUG_CXX
+#  define cxxdbg              dbg
+#  define cxxlldbg            lldbg
+#  ifdef CONFIG_DEBUG_VERBOSE
+#    define cxxvdbg           vdbg
+#    define cxxllvdbg         llvdbg
+#  else
+#    define cxxvdbg(x...)
+#    define cxxllvdbg(x...)
+#  endif
+#else
+#  define cxxdbg(x...)
+#  define cxxlldbg(x...)
+#  define cxxvdbg(x...)
+#  define cxxllvdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Types
+ ************************************************************************************/
+/* This type defines one entry in initialization array */
+
+typedef void (*initializer_t)(void);
+
+/************************************************************************************
+ * External references
+ ************************************************************************************/
+/* _sinit and _einit are symbols exported by the linker script that mark the
+ * beginning and the end of the C++ initialization section.
+ */
+
+extern initializer_t _sinit;
+extern initializer_t _einit;
+
+/* _stext and _etext are symbols exported by the linker script that mark the
+ * beginning and the end of text.
+ */
+
+extern uint32_t _stext;
+extern uint32_t _etext;
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name: up_cxxinitialize
+ *
+ * Description:
+ *   If C++ and C++ static constructors are supported, then this function
+ *   must be provided by board-specific logic in order to perform
+ *   initialization of the static C++ class instances.
+ *
+ *   This function should then be called in the application-specific
+ *   user_start logic in order to perform the C++ initialization.  NOTE
+ *   that no component of the core NuttX RTOS logic is involved; This
+ *   function defintion only provides the 'contract' between application
+ *   specific C++ code and platform-specific toolchain support
+ *
+ ***************************************************************************/
+
+void up_cxxinitialize(void)
+{
+  initializer_t *initp;
+
+  cxxdbg("_sinit: %p _einit: %p _stext: %p _etext: %p\n",
+         &_sinit, &_einit, &_stext, &_etext);
+
+  /* Visit each entry in the initialzation table */
+
+  for (initp = &_sinit; initp != &_einit; initp++)
+    {
+      initializer_t initializer = *initp;
+      cxxdbg("initp: %p initializer: %p\n", initp, initializer);
+
+      /* Make sure that the address is non-NULL and lies in the text region
+       * defined by the linker script.  Some toolchains may put NULL values
+       * or counts in the initialization table
+       */
+
+      if ((void*)initializer > (void*)&_stext && (void*)initializer < (void*)&_etext)
+        {
+          cxxdbg("Calling %p\n", initializer);
+          initializer();
+        }
+    }
+}
+
+#endif /* CONFIG_HAVE_CXX && CONFIG_HAVE_CXXINITIALIZE */
+