Completes coding of the PWM module

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679

23 files changed, 4879 insertions, 0 deletions

diff --git a/nuttx/tools/Makefile.export b/nuttx/tools/Makefile.export
new file mode 100644
index 000000000..650dc7241
--- /dev/null
+++ b/nuttx/tools/Makefile.export
@@ -0,0 +1,66 @@
+############################################################################
+# Makefile.export
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include $(TOPDIR)/.config
+include $(EXPORTDIR)/Make.defs
+
+ifdef ARCHSCRIPT
+LDPATH = ${shell echo "$(ARCHSCRIPT)" | sed -e "s/^-T[ ]*//g"}
+LDNAME = ${shell basename ${LDPATH}}
+LDDIR = ${shell dirname ${LDPATH}}
+endif
+ARCHSUBDIR = "arch/$(CONFIG_ARCH)/src"
+ARCHDIR ="$(TOPDIR)/$(ARCHSUBDIR)"
+
+all: $(EXPORTDIR)/makeinfo.sh
+default: all
+.PHONY: clean
+
+$(EXPORTDIR)/makeinfo.sh: $(TOPDIR)/.config $(EXPORTDIR)/Make.defs
+	@echo "#!/bin/bash" > $(EXPORTDIR)/makeinfo.sh
+	@echo "" >> $(EXPORTDIR)/makeinfo.sh
+	@echo "ARCHSUBDIR=\"$(ARCHSUBDIR)\"" >> $(EXPORTDIR)/makeinfo.sh
+	@echo "ARCHDIR=\"$(ARCHDIR)\"" >> $(EXPORTDIR)/makeinfo.sh
+ifdef ARCHSCRIPT
+	@echo "LDNAME=\"$(LDNAME)\"" >> $(EXPORTDIR)/makeinfo.sh
+	@echo "LDDIR=\"$(LDDIR)\"" >> $(EXPORTDIR)/makeinfo.sh
+	@echo "LDPATH=\"$(LDPATH)\"" >> $(EXPORTDIR)/makeinfo.sh
+endif
+	@echo "ARCHCFLAGS=\"$(ARCHCFLAGS) $(ARCHCPUFLAGS)\"" >> $(EXPORTDIR)/makeinfo.sh
+	@echo "ARCHCXXFLAGS=\"$(ARCHCXXFLAGS) $(ARCHCPUFLAGS)\"" >> $(EXPORTDIR)/makeinfo.sh
+	@chmod 755 $(EXPORTDIR)/makeinfo.sh
+
+clean:
+	@rm -f $(EXPORTDIR)/makeinfo.sh
diff --git a/nuttx/tools/Makefile.host b/nuttx/tools/Makefile.host
new file mode 100644
index 000000000..2384697b2
--- /dev/null
+++ b/nuttx/tools/Makefile.host
@@ -0,0 +1,67 @@
+############################################################################
+# Makefile.host
+#
+#   Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+all: mkconfig mkversion mksyscall bdf-converter
+default: mkconfig mksyscall
+.PHONY: clean
+
+# Add CFLAGS=-g on the make command line build debug versions
+
+CFLAGS = -O2 -Wall -I.
+
+# mkconfig - Convert a .config file into a C config.h file
+
+mkconfig: mkconfig.c cfgparser.c
+	@gcc $(CFLAGS) -o mkconfig mkconfig.c cfgparser.c
+
+# mkversion - Convert a .version file into a C version.h file
+
+mkversion: mkconfig.c cfgparser.c
+	@gcc $(CFLAGS) -o mkversion mkversion.c cfgparser.c
+
+# mksyscall - Convert a CSV file into syscall stubs and proxies
+
+mksyscall: mksyscall.c
+	@gcc $(CFLAGS) -o mksyscall mksyscall.c
+
+# bdf-converter - Converts a BDF font to the NuttX font format
+
+bdf-converter: bdf-converter.c
+	@gcc $(CFLAGS) -o bdf-converter bdf-converter.c
+
+clean:
+	@rm -f *.o *.a *~ .*.swp
+	@rm -f mkconfig mksyscall mkversion bdf-converter
+	@rm -f mkconfig.exe mksyscall.exe mkversion.exe bdf-converter.exe
diff --git a/nuttx/tools/README.txt b/nuttx/tools/README.txt
new file mode 100755
index 000000000..e859e8735
--- /dev/null
+++ b/nuttx/tools/README.txt
@@ -0,0 +1,303 @@
+tools/README.txt
+^^^^^^^^^^^^^^^^
+
+This README file addresses the contents of the NuttX tools/ directory.
+
+The tools/ directory contains miscellaneous scripts and host C programs
+that are necessary parts of the the NuttX build system.  These files
+include:
+
+README.txt
+
+  This file
+
+configure.sh
+
+  This is a bash script that is used to configure NuttX for a given
+  target board.  See configs/README.txt or Documentation/NuttxPortingGuide.html
+  for a description of how to configure NuttX with this script.
+
+mkconfig.c, cfgparser.c, and cfgparser.h
+
+  This is C file that is used to build mkconfig program.  The mkconfig
+  program is used during the initial NuttX build.
+
+  When you configure NuttX, you will copy a configuration file called .config
+  in the top level NuttX directory (See configs/README.txt or
+  Documentation/NuttxPortingGuide.html).  The first time you make NuttX,
+  the top-level makefile will build the mkconfig executable from mkconfig.c
+  (using Makefile.host).  The top-level Makefile will then execute the
+  mkconfig program to convert the .config file in the top level directory
+  into include/nuttx/config.h.  config.h is a another version of the
+  NuttX configuration that can be included by C files.
+
+mkexport.sh and Makefile.export
+
+  These implement part of the top-level Makefile's 'export' target.  That
+  target will bundle up all of the NuttX libraries, header files, and the
+  startup object into an export-able, binary NuttX distribution.  The
+  Makefile.export is used only by the mkexport.sh script to parse out
+  options from the top-level Make.defs file.
+
+mkversion.c, cfgparser.c, and cfgparser.h
+
+  This is C file that is used to build mkversion program.  The mkversion
+  program is used during the initial NuttX build.
+
+  When you build NuttX there should be a version file called .version in
+  the top level NuttX directory (See Documentation/NuttxPortingGuide.html).
+  The first time you make NuttX, the top-level makefile will build th
+  mkversion executable from mkversion.c (using Makefile.host).  The top-
+  level Makefile will then execute the mkversion program to convert the
+  .version file in the top level directory into include/nuttx/version.h.
+  version.h provides version information that can be included by C files.
+
+mksyscall.c
+
+  This is a C file that is used to build mksyscall program.  The mksyscall
+  program is used during the initial NuttX build by the logic in the top-
+  level syscall/ directory.
+
+  If you build NuttX as a separately compiled, monolithic kernel and separate
+  applications, then there is a syscall layer that is used to get from the
+  user application space to the NuttX kernel space.  In the user application
+  "proxies" for each of the kernel functions are provided.  The proxies have
+  the same function signature as the kernel function, but only execute a
+  system call.
+
+  Within the kernel, there are "stubs" for each of the system calls.  The
+  stubs receive the marshalled system call data, and perform the actually
+  kernel function call (in kernel-mode) on behalf of the proxy function.
+
+  Information about the stubs and proxies is maintained in a comma separated
+  value (CSV) file in the syscall/ directory.  The mksyscall program will
+  accept this CVS file as input and generate all of the required proxy or
+  stub files as output.  See syscall/README.txt for additonal information.
+
+bdf-convert.c
+
+  This C file is used to build the bdf-converter program.  The bdf-converter
+  program be used to convert fonts in Bitmap Distribution Format (BDF)
+  into fonts that can be used in the NX graphics system.
+
+  Below are general instructions for creating and installing a new font
+  in the NX graphic system:
+
+    1. Locate a font in BDF format,
+    2. Use the bdf-converter program to convert the BDF font to the NuttX
+       font format.  This will result in a C header file containing
+       defintions.  That header file should be installed at, for example,
+       graphics/nxfonts/nxfonts_myfont.h.
+
+  Create a new NuttX configuration variable.  For example, suppose
+  you define the following variable:  CONFIG_NXFONT_MYFONT.  Then
+  you would need to:
+  
+    3. Define CONFIG_NXFONT_MYFONT=y in your NuttX configuration file.
+
+  A font ID number has to be assigned for each new font.  The font ID
+  is defined in the file include/nuttx/nx/nxfonts.h.  Those definitions
+  have to be extended to support your new font.  Look at how the font ID
+  enabled by CONFIG_NXFONT_SANS23X27 is defined and add an ID for your
+  new font in a similar fashion:
+
+    4. include/nuttx/nx/nxfonts.h. Add you new font as a possible system
+       default font:
+ 
+       #if defined(CONFIG_NXFONT_SANS23X27)
+       # define NXFONT_DEFAULT FONTID_SANS23X27
+       #elif defined(CONFIG_NXFONT_MYFONT)
+       # define NXFONT_DEFAULT FONTID_MYFONT
+       #endif
+
+       Then define the actual font ID.  Make sure that the font ID value
+       is unique:
+ 
+       enum nx_fontid_e
+       {
+         FONTID_DEFAULT     = 0      /* The default font */
+       #ifdef CONFIG_NXFONT_SANS23X27
+         , FONTID_SANS23X27 = 1      /* The 23x27 sans serif font */
+       #endif
+       #ifdef CONFIG_NXFONT_MYFONT
+         , FONTID_MYFONT    = 2      /* My shiny, new font */
+       #endif
+       ...
+ 
+  New Add the font to the NX build system.  There are several files that
+  you have to modify to to this.  Look how the build system uses the
+  font CONFIG_NXFONT_SANS23X27 for examaples:
+
+    5. nuttx/graphics/Makefile.  This file needs logic to auto-generate
+       a C source file from the header file that you generated with the
+       the bdf-converter program.  Notice NXFONTS_FONTID=2; this must be
+       set to the same font ID value that you defined in the
+       include/nuttx/nx/nxfonts.h file.
+
+       genfontsources:
+         ifeq ($(CONFIG_NXFONT_SANS23X27),y)
+	      @$(MAKE) -C nxfonts -f Makefile.sources TOPDIR=$(TOPDIR) NXFONTS_FONTID=1 EXTRADEFINES=$(EXTRADEFINES)
+        endif
+         ifeq ($(CONFIG_NXFONT_MYFONT),y)
+	      @$(MAKE) -C nxfonts -f Makefile.sources TOPDIR=$(TOPDIR) NXFONTS_FONTID=2 EXTRADEFINES=$(EXTRADEFINES)
+        endif
+
+    6. nuttx/graphics/nxfonts/Make.defs.  Set the make variable NXFSET_CSRCS.
+       NXFSET_CSRCS determines the name of the font C file to build when
+       NXFONTS_FONTID=2:
+
+       ifeq ($(CONFIG_NXFONT_SANS23X27),y)
+       NXFSET_CSRCS	+= nxfonts_bitmaps_sans23x27.c
+       endif
+       ifeq ($(CONFIG_NXFONT_MYFONT),y)
+       NXFSET_CSRCS	+= nxfonts_bitmaps_myfont.c
+       endif
+
+    7. nuttx/graphics/nxfonts/Makefile.sources.  This is the Makefile used
+       in step 5 that will actually generate the font C file.  So, given
+       your NXFONTS_FONTID=2, it needs to determine a prefix to use for
+       auto-generated variable and function names and (again) the name of
+       the autogenerated file to create (this must be the same name that
+       was used in nuttx/graphics/nxfonts/Make.defs):
+
+       ifeq ($(NXFONTS_FONTID),1)
+       NXFONTS_PREFIX	:= g_sans23x27_
+       GEN_CSRC	= nxfonts_bitmaps_sans23x27.c
+       endif
+       ifeq ($(NXFONTS_FONTID),2)
+       NXFONTS_PREFIX	:= g_myfont_
+       GEN_CSRC	= nxfonts_bitmaps_myfont.c
+       endif
+
+    8. graphics/nxfonts/nxfonts_bitmaps.c.  This is the file that contains
+       the generic font structures.  It is used as a "template" file by
+       nuttx/graphics/nxfonts/Makefile.sources to create your customized
+       font data set.
+
+       #if NXFONTS_FONTID == 1
+       #  include "nxfonts_sans23x27.h"
+       #elif NXFONTS_FONTID == 2
+       #  include "nxfonts_myfont.h"
+       #else
+       #  error "No font ID specified"
+       #endif
+
+       Where nxfonts_myfont.h is the NuttX font file that we generated in
+       step 2 using the bdf-converter tool.
+
+    9. graphics/nxfonts/nxfonts_getfont.c.  Finally, we need to extend the
+       logic that does the run-time font lookups so that can find our new
+       font.  The lookup function is NXHANDLE nxf_getfonthandle(enum nx_fontid_e fontid).
+       The new font information needs to be added to data structures used by
+       that function:
+ 
+       #ifdef CONFIG_NXFONT_SANS23X27
+       extern const struct nx_fontpackage_s g_sans23x27_package;
+       #endif
+       #ifdef CONFIG_NXFONT_MYFONT
+       extern const struct nx_fontpackage_s g_myfont_package;
+       #endif
+
+       static FAR const struct nx_fontpackage_s *g_fontpackages[] =
+       {
+       #ifdef CONFIG_NXFONT_SANS23X27
+       &g_sans23x27_package,
+       #endif
+       #ifdef CONFIG_NXFONT_MYFONT
+       &g_myfont_package,
+       #endif
+       NULL
+       };
+
+Makefile.host
+
+  This is the makefile that is used to make the mkconfig program from
+  the mkconfig.c C file, the mkversion program from the mkconfig.c C file,
+  or the mksyscall program from the mksyscall.c file.
+
+mkromfsimg.sh
+
+  This script may be used to automate the generate of a ROMFS file system
+  image.  It accepts an rcS script "template" and generates and image that
+  may be mounted under /etc in the NuttX pseudo file system.
+
+mkdeps.sh
+mknulldeps.sh
+
+  NuttX uses the GCC compilers capabilities to create Makefile dependencies.
+  The bash script mkdeps.sh is used to run GCC in order to create the
+  dependencies.  If a NuttX configuration uses the GCC toolchain, its Make.defs
+  file (see configs/README.txt) will include a line like:
+
+    MKDEP = $(TOPDIR)/tools/mkdeps.sh
+
+  If the NuttX configuration does not use a GCC compatible toolchain, then
+  it cannot use the dependencies and instead it uses mknulldeps.sh:
+
+    MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+
+  The mknulldeps.sh is a stub script that does essentially nothing.
+
+define.sh
+
+  Different compilers have different conventions for specifying pre-
+  processor definitions on the compiler command line.  This bash
+  script allows the build system to create create command line definitions
+  without concern for the particular compiler in use.
+
+incdir.sh
+
+  Different compilers have different conventions for specifying lists
+  of include file paths on the the compiler command line.  This bash
+  script allows the build system to create include file paths without
+  concern for the particular compiler in use.
+
+link.sh
+winlink.sh
+unlink.sh
+
+  Different file system have different capabilities for symbolic links.
+  Some windows file systems have no native support for symbolic links.
+  Cygwin running under windows has special links built in that work with
+  all cygwin tools.  However, they do not work when Windows native tools
+  are used with cygwin.  In that case something different must be done.
+
+  If you are building under Linux or under cygwin with a cygwin tool
+  chain, then your Make.defs file may have definitions like the
+  following:
+
+    DIRLINK = $(TOPDIR)/tools/link.sh
+    DIRUNLINK = (TOPDIR)/tools/unlink.sh
+
+  The first definition is not always present because link.sh is the
+  default.  link.sh is a bash script that performs a normal, Linux-style
+  symbolic link;  unlink.sh is a do-it-all unlinking script.
+
+  But if you are building under cygwin using a Windows native toolchain,
+  then you will need something like the following in you Make.defs file:
+
+    DIRLINK = $(TOPDIR)/tools/winlink.sh
+    DIRUNLINK = (TOPDIR)/tools/unlink.sh
+
+  winlink.sh will copy the whole directory instead of linking it.
+
+  NOTE:  I have been told that some NuttX users have been able to build
+  successfully using the GnuWin32 tools and modifying the link.sh
+  script so that it uses the NTFS mklink command.  But I have never
+  tried that
+
+mkimage.sh
+
+  The creates a downloadable image as needed with the rrload bootloader.
+
+indent.sh
+
+  This script can be used to indent .c and .h files in a manner similar
+  to my coding NuttX coding style.  It doesn't do a really good job,
+  however (see the comments at the top of the indent.sh file).
+
+zipme.sh
+
+  I use this script to create the nuttx-xx.yy.tar.gz tarballs for
+  release on SourceForge.  It is handy because it also does the
+  kind of clean that you need to do to make a clean code release.
diff --git a/nuttx/tools/bdf-converter.c b/nuttx/tools/bdf-converter.c
new file mode 100644
index 000000000..b32209fcf
--- /dev/null
+++ b/nuttx/tools/bdf-converter.c
@@ -0,0 +1,675 @@
+/****************************************************************************
+ * tools/bdf-converter.c
+ *
+ *   Copyright (C) 2011 NX Engineering, S.A., All rights reserved.
+ *   Author: Jose Pablo Carballo Gomez <jcarballo@nx-engineering.com>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/* 
+ * Based one the "Glyph Bitmap Distribution Format (BDF) Specification",
+ * Version 2.2, by Adobe Systems Incorporated.
+ *
+ */
+ 
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/*
+#define VERBOSE
+#define DBG
+*/
+ 
+// BDF Specification Version 2.2:
+// This version lifts the restriction on line length. In this version, the new
+// maximum length of a value of the type string is 65535 characters, and hence
+// lines may now be at least this long.
+
+#define BDF_MAX_LINE_LENGTH 65535
+
+/* Ranges of 7-bit and 8-bit fonts */
+
+#define NXFONT_MIN7BIT 33
+#define NXFONT_MAX7BIT 126
+
+#define NXFONT_MIN8BIT 161
+#define NXFONT_MAX8BIT 255
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* This structure holds information about a glyph */
+
+typedef struct glyphinfo_s
+{
+  char *name;       /* Name for they glyph */
+  int   encoding;   /* The Adobe Standard Encoding value */
+  int   dw_x0;      /* Width in x of the vector indicating
+                     * the position of the next glyph's origin
+                     * relative to the origin of this glyph */
+  int   dw_y0;      /* Width in y of the vector indicating
+                     * the position of the next glyph's origin
+                     * relative to the origin of this glyph */
+  int   bb_w;       /* The width of the black pixels in x */
+  int   bb_h;       /* The height of the black pixels in y */
+  int   bb_x_off;   /* X displacement of the lower left corner
+                     * of the bitmap from origin 0 */
+  int   bb_y_off;   /* Y displacement of the lower left corner
+                     * of the bitmap from origin 0 */
+  uint64_t *bitmap; /* Hexadecimal data for the character bitmap */
+} glyphinfo_t;
+
+/* This structures provides the metrics for one glyph */
+
+typedef struct nx_fontmetric_s
+{
+  uint32_t stride   : 3;    /* Width of one font row in bytes */
+  uint32_t width    : 6;    /* Width of the font in bits */
+  uint32_t height   : 6;    /* Height of the font in rows */
+  uint32_t xoffset  : 6;    /* Top, left-hand corner X-offset in pixels */
+  uint32_t yoffset  : 6;    /* Top, left-hand corner y-offset in pixels */
+  uint32_t unused   : 5;
+} nx_fontmetric_t;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: trimLine
+ *
+ * Description:
+ *   Trims the line removing space characters at the front and at the end
+ *   of the line.
+ *
+ * Input Parameters:
+ *   line  - The line to trim
+ *
+ ****************************************************************************/
+static void trimLine(char *line)
+{
+  char *str;
+  str = line;
+  char *strEnd;
+  for (strEnd = str + strlen(str) - 1;
+       strEnd >= str && isspace((int)(*strEnd));
+       strEnd--);
+  *(strEnd + 1) = 0;
+}
+
+/****************************************************************************
+ * Name: bdf_parseIntLine
+ *
+ * Description:
+ *   Parses a line containing a BDF property followed by integers. It will
+ *   ignore the first token that corresponds to the property name.
+ *
+ * Input Parameters:
+ *   line  - A line with a BDF property followed by integers, i.e.:
+ *                  "FONTBOUNDINGBOX 8 13 0 -2"
+ *   count - How many integers are specified by the BDF property. In the
+ *           example above, count = 4.
+ *   info  - A pointer to memory provided by the caller in which to
+ *           return the array of integers. For the example above:
+ *                info[0] =  8
+ *                info[1] = 13
+ *                info[2] =  0
+ *                info[3] = -2
+ *
+ ****************************************************************************/
+static void bdf_parseintline(char *line, unsigned int count, int *info)
+{
+  char *str, *token, *saveptr1;
+  str = line;
+  
+  /* Ignore the key */
+  
+  token = (char *)strtok_r(str, " ", &saveptr1);
+  
+  while ((token = (char *)strtok_r(NULL, " ", &saveptr1)) && count--)
+    {
+      *(info++) = atoi(token);
+    }
+}
+
+/****************************************************************************
+ * Name: bdf_printglyphinfo
+ *
+ * Description:
+ *   Prints the information available for a glyph.
+ *
+ * Input Parameters:
+ *   ginfo  - A glyphinfo_t struct with the glyph's information.
+ *
+ ****************************************************************************/
+#ifdef DBG
+static void bdf_printglyphinfo(const glyphinfo_t *ginfo)
+{
+  printf("NAME     = %s\n", ginfo->name);
+  printf("ENCODING = %d\n", ginfo->encoding);
+  printf("DW_X0    = %d\n", ginfo->dw_x0);
+  printf("DW_Y0    = %d\n", ginfo->dw_y0);
+  printf("BB_W     = %d\n", ginfo->bb_w);
+  printf("BB_H     = %d\n", ginfo->bb_h);
+  printf("BB_X_OFF = %d\n", ginfo->bb_x_off);
+  printf("BB_Y_OFF = %d\n", ginfo->bb_y_off);
+  int i;
+  for (i = 0; i < ginfo->bb_h; i++)
+    {
+      printf("BITMAP[%d] = %x\n", i, ginfo->bitmap[i]);
+    }
+}
+#endif /* DBG */
+
+/****************************************************************************
+ * Name: bdf_printnxmetricinfo
+ *
+ * Description:
+ *   Prints the information available for a glyph's metric in the NX
+ *   graphics system.
+ *
+ * Input Parameters:
+ *   info  - A nx_fontmetric_t struct with the glyph's information.
+ *
+ ****************************************************************************/
+#ifdef DBG
+static void bdf_printnxmetricinfo(const nx_fontmetric_t *info)
+{
+  printf("STRIDE  = %d\n", info->stride);
+  printf("WIDTH   = %d\n", info->width);
+  printf("HEIGHT  = %d\n", info->height);
+  printf("XOFFSET = %d\n", info->xoffset);
+  printf("YOFFSET = %d\n", info->yoffset);
+}
+#endif /* DBG */
+
+/****************************************************************************
+ * Name: bdf_getglyphinfo
+ *
+ * Description:
+ *   Obtains the information for an individual glyph. The BDF properties
+ *   taken into account are:
+ *     - ENCODING
+ *     - DWIDTH
+ *     - BBX
+ *   BDF properties ignored:
+ *     - SWIDTH
+ *     - SWIDTH1
+ *     - DWIDTH1
+ *     - VVECTOR
+ *
+ * Input Parameters:
+ *   file  - The input file stream pointing to the first line of the
+ *           glyph's information (right after STARTCHAR). 
+ *   ginfo - A glyphinfo_t struct to fill with the glyph's information.
+ *
+ ****************************************************************************/
+static void bdf_getglyphinfo(FILE *file, glyphinfo_t *ginfo)
+{
+  char line[BDF_MAX_LINE_LENGTH];
+  char lineCopy[BDF_MAX_LINE_LENGTH];
+  char *str, *token, *saveptr1;
+  bool done;
+  
+  done = false;
+  
+  while(fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL && !done)
+    {
+      trimLine(line);
+      strcpy(lineCopy, line);
+      str = line;
+      
+      while ((token = (char *)strtok_r(str, " ", &saveptr1)))
+        {
+
+          /* ENCODING information */
+          
+          if(strcmp(token, "ENCODING") == 0)
+            {
+              token = (char *)strtok_r(NULL, " ", &saveptr1);
+              ginfo->encoding = atoi(token);
+            }
+            
+          /* DWIDTH information */
+          
+          if(strcmp(token, "DWIDTH") == 0)
+            {
+              token = (char *)strtok_r(NULL, " ", &saveptr1);
+              ginfo->dw_x0 = atoi(token);
+              token = (char *)strtok_r(NULL, " ", &saveptr1);
+              ginfo->dw_y0 = atoi(token);
+            }
+            
+          /* BBX information */
+          
+          else if(strcmp(token, "BBX") == 0)
+            {
+              int bbxinfo[4];
+              bdf_parseintline(lineCopy, 4, bbxinfo);
+              ginfo->bb_w     = bbxinfo[0];
+              ginfo->bb_h     = bbxinfo[1];
+              ginfo->bb_x_off = bbxinfo[2];
+              ginfo->bb_y_off = bbxinfo[3];
+              
+              /* This is the last BDF property of interest*/
+              
+              done = true;
+            }
+
+          str = NULL;
+        }
+      
+    }
+}
+
+/****************************************************************************
+ * Name: bdf_getglyphbitmap
+ *
+ * Description:
+ *   Obtains the character bitmap information for an individual glyph.
+ *
+ * Input Parameters:
+ *   file  - The input file stream pointing to the first line of the
+ *           glyph's bitmap (right after BITMAP). 
+ *   ginfo - A glyphinfo_t struct to fill with the glyph's bitmap.
+ *
+ ****************************************************************************/
+static void bdf_getglyphbitmap(FILE *file, glyphinfo_t *ginfo)
+{
+  char line[BDF_MAX_LINE_LENGTH];
+  uint64_t *bitmap;
+  bool readingbitmap;
+  
+  bitmap = ginfo->bitmap;
+  readingbitmap = true;
+  
+  while (readingbitmap)
+    {
+      if (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL)
+      {
+        trimLine(line);
+      
+        if(strcmp(line, "ENDCHAR") == 0)
+          {
+            readingbitmap = false;
+          }
+        else
+          {
+            char *endptr;
+            *bitmap = strtoul(line, &endptr, 16);
+            bitmap++;
+          }
+          
+      }
+      else
+      {
+        /* error condition */
+        
+        readingbitmap = false;
+      }
+       
+    }
+}
+
+/****************************************************************************
+ * Name: bdf_getstride
+ *
+ * Description:
+ *   Obtains the stride for an individual glyph. The stride is the width
+ *   of one glyph's bitmap row in bytes.
+ *
+ * Input Parameters:
+ *   ginfo  - A glyphinfo_t struct with the glyph's information.
+ *   stride - A pointer to memory provided by the caller in which to
+ *            return the stride.
+ *
+ ****************************************************************************/
+static void bdf_getstride(glyphinfo_t *ginfo, uint32_t *stride)
+{
+  *stride = (ginfo->bb_w % 8 == 0) ? ginfo->bb_w / 8 : ginfo->bb_w / 8 + 1;
+}
+
+/****************************************************************************
+ * Name: bdf_printoutput
+ *
+ * Description:
+ *   Prints to the output stream the information of an individual glyph in
+ *   the NuttX font format.
+ *
+ * Input Parameters:
+ *   out       - The output stream.
+ *   ginfo     - A glyphinfo_t struct with the glyph's information.
+ *   nxmetric  - A nx_fontmetric_t struct with the glyph's information.
+ *
+ ****************************************************************************/
+static void bdf_printoutput(FILE *out, 
+                            glyphinfo_t *ginfo,
+                            nx_fontmetric_t *nxmetric)
+{
+
+  /* Only interested in the 7 and 8 bit ranges */
+  
+  if ((ginfo->encoding >= NXFONT_MIN7BIT  &&
+       ginfo->encoding <= NXFONT_MAX7BIT) ||
+      (ginfo->encoding >= NXFONT_MIN8BIT  &&
+       ginfo->encoding <= NXFONT_MAX8BIT))
+    {
+      
+      /* Glyph general info */
+      
+      if (ginfo->bb_x_off < 0)
+        {
+          fprintf(out,
+                  "/* %s (%d) -- NOTE: Xoffset should be %d, not 0. */\n",
+                  ginfo->name,
+                  ginfo->encoding,
+                  ginfo->bb_x_off);
+        }
+      else
+        {
+          fprintf(out, "/* %s (%d) */\n", ginfo->name, ginfo->encoding);
+        }
+      
+      /* Glyph metrics */
+      
+      fprintf(out,
+              "#define NXFONT_METRICS_%d {%d, %d, %d, %d, %d, 0}\n",
+              ginfo->encoding,
+              nxmetric->stride,
+              nxmetric->width,
+              nxmetric->height,
+              nxmetric->xoffset,
+              nxmetric->yoffset);
+              
+      /* Glyph bitmap */
+      
+      fprintf(out, "#define NXFONT_BITMAP_%d {", ginfo->encoding);
+      int i, j;
+      for (i = 0; i < ginfo->bb_h - 1; i++)
+        {
+          for (j = 1; j <= nxmetric->stride; j++)
+            {
+              int nxbyteoffset;
+              uint8_t  nxbyte = 0;
+              uint64_t tempbitmap = ginfo->bitmap[i];
+              
+              /* Get the next byte */
+              
+              nxbyteoffset = (nxmetric->stride - j) * 8;
+              nxbyte = (uint8_t)(tempbitmap >> nxbyteoffset);
+              fprintf(out, "0x%x, ", nxbyte);
+            }
+        }
+      
+      /* Different behavior for the last bitmap */
+      
+      for (j = 1; j <= nxmetric->stride; j++)
+        {
+          int nxbyteoffset;
+          uint8_t  nxbyte = 0;
+          uint64_t tempbitmap = ginfo->bitmap[i];
+          
+          /* Get the next byte */
+          
+          nxbyteoffset = (nxmetric->stride - j) * 8;
+          nxbyte = (uint8_t)(tempbitmap >> nxbyteoffset);
+          
+          if (j == nxmetric->stride)
+            {
+              fprintf(out, "0x%x}\n", nxbyte);
+            }
+          else
+            {
+              fprintf(out, "0x%x, ", nxbyte);
+            }
+        }      
+      
+      fprintf(out, "\n");
+    }
+
+}
+
+/****************************************************************************
+ * Main
+ ****************************************************************************/
+
+int main(int argc, char **argv)
+{
+  FILE *file, *out;
+  char line[BDF_MAX_LINE_LENGTH];
+  char lineCopy[BDF_MAX_LINE_LENGTH];
+  char *str, *token, *saveptr1;
+  char *input, *output;
+  
+  /* FONTBOUNDINGBOX properties*/
+  
+  int fbb_x     = 0;
+  int fbb_y     = 0;
+  int fbb_x_off = 0;
+  int fbb_y_off = 0;
+  
+  /* Input BDF file */
+  
+  input = argv[1];
+  
+  if (input == NULL)
+    {
+      printf("%s: no input file\n", argv[0]);
+      exit(0);
+    }
+    
+  file = fopen(input, "r");
+  
+  if (file == NULL)
+    {
+      printf("%s: error opening file %s\n", argv[0], input);
+      exit(0);
+    }
+  else
+    {
+#ifdef VERBOSE
+      printf("Opening \"%s\"\n", input);
+#endif /* VERBOSE */
+    }
+  
+  /* Output file */
+  if (argv[2])
+    {
+      output = argv[2];
+    }
+  else
+    {
+      output = "nxfonts_myfont.h";
+    }
+  
+  out  = fopen(output, "w");
+  
+  if (out == NULL)
+    {
+      printf("%s: error opening file %s\n", argv[0], output);
+      fclose(file);
+      exit(0);
+    }
+  else
+    {
+      while (fgets(line, BDF_MAX_LINE_LENGTH, file) != NULL)
+        {
+        
+#ifdef DBG
+          printf("--\n");
+#endif /* DBG */
+          
+          // Save a copy of the line
+          
+          strcpy(lineCopy,line);
+          
+          // Clean it
+          
+          trimLine(line);
+          str = line;
+
+          while ((token = (char *)strtok_r(str, " ", &saveptr1)))
+            {
+            
+              /* FONTBOUNDINGBOX - Global font information */
+            
+              if (strcmp(token, "FONTBOUNDINGBOX") == 0)
+                {
+                  int fbbinfo[4];
+                  bdf_parseintline(lineCopy, 4, fbbinfo);
+                  fbb_x     = fbbinfo[0];
+                  fbb_y     = fbbinfo[1];
+                  fbb_x_off = fbbinfo[2];
+                  fbb_y_off = fbbinfo[3];
+                  
+                  /* Print FONTBOUNDINGBOX information */
+                  
+                  fprintf(out, "/* Maximum height and width of any");
+                  fprintf(out, " glyph in the set */\n\n");
+                  fprintf(out, "#define NXFONT_MAXHEIGHT  %d\n", fbb_y);
+                  fprintf(out, "#define NXFONT_MAXWIDTH   %d\n\n", fbb_x);
+                }
+                
+              /* STARTCHAR - Individual glyph information */
+                
+              if (strcmp(token, "STARTCHAR") == 0)
+                {
+                  glyphinfo_t ginfo;
+                  
+                  /* Glyph name */
+                  
+                  ginfo.name = (char *)strtok_r(NULL, " ", &saveptr1);
+
+#ifdef VERBOSE
+                  printf("Processing glyph: %s\n", ginfo.name);
+#endif /* VERBOSE */
+                  
+                  /* Glyph information:
+                  *    ENCODING
+                  *    DWIDTH
+                  *    BBX
+                  */
+                  ginfo.encoding = 0;
+                  ginfo.dw_x0    = 0;
+                  ginfo.dw_y0    = 0;
+                  ginfo.bb_w     = 0;
+                  ginfo.bb_h     = 0;
+                  ginfo.bb_x_off = 0;
+                  ginfo.bb_y_off = 0;
+                  bdf_getglyphinfo(file, &ginfo);
+                  
+                  /* Glyph bitmap */
+                  
+                  ginfo.bitmap = malloc(sizeof(uint64_t) * ginfo.bb_h);
+                  bdf_getglyphbitmap(file, &ginfo);
+                  
+#ifdef DBG
+                  bdf_printglyphinfo(&ginfo);
+#endif /* DBG */
+                  
+                  /* Convert to nxfonts */
+                  
+                  nx_fontmetric_t nxmetric;
+                  uint32_t stride;
+                  bdf_getstride(&ginfo, &stride);
+                  nxmetric.stride  = stride;
+                  nxmetric.width   = ginfo.bb_w;
+                  nxmetric.height  = ginfo.bb_h;
+
+                  /* The NuttX font format does not support
+                   * negative X offsets. */
+                  
+                  if (ginfo.bb_x_off < 0)
+                    {
+                      nxmetric.xoffset = 0;
+                      printf("%s: ignoring negative x offset for "
+                             "glyph '%s' (%d)\n",
+                             argv[0],
+                             ginfo.name,
+                             ginfo.encoding);
+                    }
+                  else
+                    {
+                      nxmetric.xoffset = ginfo.bb_x_off;
+                    }
+                    
+                  nxmetric.yoffset = fbb_y + fbb_y_off -
+                                     ginfo.bb_y_off - ginfo.bb_h;
+                                     
+                  
+#ifdef DBG                  
+                  bdf_printnxmetricinfo(&nxmetric);
+#endif /* DBG */
+
+                  /* The space (32) character is treated differently */
+
+                  if (ginfo.encoding == 32)
+                    {
+                      fprintf(out, "/* The width of a space */\n\n");
+                      fprintf(out, "#define NXFONT_SPACEWIDTH %d\n\n", ginfo.dw_x0);
+                    }
+                  else
+                    {
+                      bdf_printoutput(out, &ginfo, &nxmetric);
+                    }
+                  
+                  /* Free memory */
+                  
+                  free(ginfo.bitmap);
+                  
+                }
+              
+              str = NULL;
+            }
+          
+        }
+      fclose(file);
+      fclose(out);
+      
+      /* The End */
+      
+      printf("Generated \"%s\"\n", output);
+      
+    }
+    
+  return EXIT_SUCCESS;
+}
diff --git a/nuttx/tools/cfgparser.c b/nuttx/tools/cfgparser.c
new file mode 100644
index 000000000..2917a2f60
--- /dev/null
+++ b/nuttx/tools/cfgparser.c
@@ -0,0 +1,168 @@
+/****************************************************************************
+ * tools/cfgpaser.c
+ *
+ *   Copyright (C) 2007-2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <string.h>
+#include <ctype.h>
+#include "cfgparser.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+char line[LINESIZE+1];
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static char *skip_space(char *ptr)
+{
+  while (*ptr && isspace((int)*ptr)) ptr++;
+  return ptr;
+}
+
+static char *find_name_end(char *ptr)
+{
+  while (*ptr && (isalnum((int)*ptr) || *ptr == '_')) ptr++;
+  return ptr;
+}
+
+static char *find_value_end(char *ptr)
+{
+  while (*ptr && !isspace((int)*ptr))
+    {
+      if (*ptr == '"')
+        {
+           do ptr++; while (*ptr && *ptr != '"');
+           if (*ptr) ptr++;
+        }
+      else
+        {
+           do ptr++; while (*ptr && !isspace((int)*ptr) && *ptr != '"');
+        }
+    }
+  return ptr;
+}
+
+static char *read_line(FILE *stream)
+{
+  char *ptr;
+
+  for (;;)
+    {
+      line[LINESIZE] = '\0';
+      if (!fgets(line, LINESIZE, stream))
+        {
+          return NULL;
+        }
+      else
+        {
+          ptr = skip_space(line);
+          if (*ptr && *ptr != '#' && *ptr != '\n')
+            {
+              return ptr;
+            }
+        }
+    }
+}
+
+static void parse_line(char *ptr, char **varname, char **varval)
+{
+  *varname = ptr;
+  *varval = NULL;
+
+   ptr = find_name_end(ptr);
+   if (*ptr && *ptr != '=')
+    {
+      *ptr = '\0';
+       ptr = skip_space(ptr + 1);
+    }
+
+  if (*ptr == '=')
+    {
+      *ptr = '\0';
+      ptr = skip_space(ptr + 1);
+      if (*ptr)
+        {
+          *varval = ptr;
+          ptr = find_value_end(ptr);
+          *ptr = '\0';
+        }
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void parse_file(FILE *stream)
+{
+  char *varname;
+  char *varval;
+  char *ptr;
+
+  do
+    {
+      ptr = read_line(stream);
+      if (ptr)
+        {
+          parse_line(ptr, &varname, &varval);
+          if (varname)
+            {
+              if (!varval || strcmp(varval, "n") == 0)
+                {
+                  printf("#undef %s\n", varname);
+                }
+              else if (strcmp(varval, "y") == 0)
+                {
+                  printf("#define %s 1\n", varname);
+                }
+              else
+                {
+                  printf("#define %s %s\n", varname, varval);
+                }
+            }
+        }
+    }
+  while (ptr);
+}
diff --git a/nuttx/tools/cfgparser.h b/nuttx/tools/cfgparser.h
new file mode 100644
index 000000000..02de42928
--- /dev/null
+++ b/nuttx/tools/cfgparser.h
@@ -0,0 +1,64 @@
+/****************************************************************************
+ * tools/cfgpaser.h
+ *
+ *   Copyright (C) 2007-2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __TOOLS_CFGPARSER_H
+#define __TOOLS_CFGPARSER_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <limits.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define LINESIZE  ( PATH_MAX > 256 ? PATH_MAX : 256 )
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+extern char line[LINESIZE+1];
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+extern void parse_file(FILE *stream);
+
+#endif /* __TOOLS_CFGPARSER_H */
diff --git a/nuttx/tools/configure.sh b/nuttx/tools/configure.sh
new file mode 100755
index 000000000..1174534fe
--- /dev/null
+++ b/nuttx/tools/configure.sh
@@ -0,0 +1,168 @@
+#!/bin/bash
+# configure.sh
+#
+#   Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+WD=`pwd`
+TOPDIR="${WD}/.."
+USAGE="
+
+USAGE: ${0} [-d] [-a <app-dir>] <board-name>/<config-name>
+
+Where:
+  <board-name> is the name of the board in the configs directory
+  <config-name> is the name of the board configuration sub-directory
+  <add-dir> is the path to the apps/ directory, relative to the nuttx directory
+
+"
+
+# Parse command arguments
+
+unset boardconfig
+unset appdir
+
+while [ ! -z "$1" ]; do
+  case "$1" in
+    -d )
+      set -x
+      ;;
+    -h )
+      echo "$USAGE"
+      exit 0
+      ;;
+    -a )
+      shift
+      appdir=$1
+      ;;
+    *)
+      if [ ! -z "${boardconfig}" ]; then
+        echo ""
+        echo "<board/config> defined twice"
+        echo "$USAGE"
+        exit 1
+      fi
+      boardconfig=$1
+      ;;
+  esac
+  shift
+done
+
+# Sanity checking
+
+if [ -z "${boardconfig}" ]; then
+  echo ""
+  echo "Missing <board/config> argument"
+  echo "$USAGE"
+  exit 2
+fi
+
+configpath=${TOPDIR}/configs/${boardconfig}
+if [ ! -d "${configpath}" ]; then
+  echo "Directory ${configpath} does not exist.  Options are:"
+  echo ""
+  echo "Select one of the following options for <board-name>:"
+  configlist=`find ${TOPDIR}/configs -name defconfig`
+  for defconfig in $configlist; do
+    config=`dirname $defconfig | sed -e "s,${TOPDIR}/configs/,,g"`
+    echo "  $config"
+  done
+  echo ""
+  echo "$USAGE"
+  exit 3
+fi
+
+if [ ! -r "${configpath}/Make.defs" ]; then
+  echo "File ${configpath}/Make.defs does not exist"
+  exit 4
+fi
+
+if [ ! -r "${configpath}/setenv.sh" ]; then
+  echo "File ${configpath}/setenv.sh does not exist"
+  exit 5
+fi
+
+if [ ! -r "${configpath}/defconfig" ]; then
+  echo "File ${configpath}/defconfig does not exist"
+  exit 6
+fi
+
+# Check for the apps/ dir in the usual place if appdir was not provided
+
+if [ -z "${appdir}" ]; then
+
+  # Check for a version file
+
+  unset CONFIG_VERSION_STRING
+  if [ -x "${TOPDIR}/.version" ]; then
+    . "${TOPDIR}/.version"
+  fi
+
+  # Check for an unversioned apps/ directory
+ 
+  if [ -d "${TOPDIR}/../apps" ]; then
+    appdir="../apps"
+
+  else
+    # Check for a versioned apps/ directory
+
+    if [ -d "${TOPDIR}/../apps-${CONFIG_VERSION_STRING}" ]; then
+      appdir="../apps-${CONFIG_VERSION_STRING}"
+    fi 
+  fi
+fi
+
+# Okay... setup the configuration
+
+cp -f "${configpath}/Make.defs" "${TOPDIR}/." || \
+  { echo "Failed to copy ${configpath}/Make.defs" ; exit 7 ; }
+cp -f "${configpath}/setenv.sh" "${TOPDIR}/." || \
+  { echo "Failed to copy ${configpath}/setenv.sh" ; exit 8 ; }
+chmod 755 "${TOPDIR}/setenv.sh"
+cp -f "${configpath}/defconfig" "${TOPDIR}/.config" || \
+  { echo "Failed to copy ${configpath}/defconfig" ; exit 9 ; }
+
+# Copy option appconfig
+
+if [ ! -z "${appdir}" ]; then
+  if [ ! -r "${configpath}/appconfig" ]; then
+    echo "NOTE: No readable appconfig file found in ${configpath}"
+  else
+    cp -f "${configpath}/appconfig" "${TOPDIR}/${appdir}/.config" || \
+      { echo "Failed to copy ${configpath}/appconfig" ; exit 10 ; }
+
+    echo "" >> "${TOPDIR}/.config"
+    echo "# Application configuration" >> "${TOPDIR}/.config"
+    echo "" >> "${TOPDIR}/.config"
+    echo "CONFIG_APPS_DIR=\"$appdir\"" >> "${TOPDIR}/.config"
+  fi
+fi
+
diff --git a/nuttx/tools/define.sh b/nuttx/tools/define.sh
new file mode 100755
index 000000000..8b2b0e364
--- /dev/null
+++ b/nuttx/tools/define.sh
@@ -0,0 +1,224 @@
+#!/bin/bash
+# tools/define.sh
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+#
+# Handle command line options
+#
+
+progname=$0
+wintool=n
+usage="USAGE: $progname [-w] [-d] [-l] [-h] <compiler-path> <def1>[=val1] [<def2>[=val2] [<def3>[=val3] ...]]"
+advice="Try '$progname -h' for more information"
+
+while [ ! -z "$1" ]; do 
+	case $1 in
+	-d )
+		set -x
+		;;
+	-w )
+		wintool=y
+		;;
+	-h )
+		echo "$progname is a tool for flexible generation of command line pre-processor"
+		echo "definitions arguments for a variety of diffent compilers in a variety of"
+		echo "compilation environments"
+		echo ""
+		echo $usage
+		echo ""
+		echo "Where:"
+		echo "	<compiler-path>"
+		echo "		The full path to your compiler"
+		echo "	<def1> <def2> [<def3> ..."
+		echo "		A list of pre-preprocesser variable names to be defind."
+		echo "	[=val1] [=val2] [=val3]"
+		echo "		optional values to be assigned to each pre-processor variable."
+		echo "		If not supplied, the variable will be defined with no explicit value."
+		echo "	-w"
+		echo "		The compiler is a Windows native tool and requires Windows"
+		echo "		style pathnames like C:\\Program Files"
+		echo "	-d"
+		echo "		Enable script debug"
+		;;
+	* )
+		break;
+		;;
+	esac
+	shift
+done
+
+ccpath=$1
+shift
+varlist=$@
+
+if [ -z "$ccpath" ]; then
+	echo "Missing compiler path"
+	echo $usage
+	echo $advice
+	exit 1
+fi
+
+if [ -z "$varlist" ]; then
+	echo "Missing definition list"
+	echo $usage
+	echo $advice
+	exit 1
+fi
+
+#
+# Most compilers support CFLAG options like '-D<defn>' to add pre-processor
+# variable defintions.  Some (like the Zilog tools), do not.  This script
+# makes the selection of pre-processor definitions compiler independent.
+#
+# Below are all known compiler names (as found in the config/*/*/Make.defs
+# files).  If a new compiler is used that has some unusual syntax, then
+# additional logic needs to be added to this file.
+#
+#   NAME                        Syntax
+#   $(CROSSDEV)gcc              -D<def1> -D<def2> -D<def3> ...
+#   sdcc                        -D<def2> -D<def2> -D<def3> ...
+#   $(ZDSBINDIR)/ez8cc.exe      -define:<def1> -define:<def2> -define:<def3> ...
+#   $(ZDSBINDIR)/zneocc.exe     -define:<def1> -define:<def2> -define:<def3> ...
+#   $(ZDSBINDIR)/ez80cc.exe     -define:<def1> -define:<def2> -define:<def3> ...
+#
+os=`uname -o 2>/dev/null || echo "Other"`
+
+#
+# Let's assume that all GCC compiler paths contain the string gcc and
+# no non-GCC compiler pathes include this substring
+#
+gcc=`echo $ccpath | grep gcc`
+sdcc=`echo $ccpath | grep sdcc`
+
+if [ "X$os" = "XCygwin" ]; then
+	#
+	# We can treat Cygwin native toolchains just like Linux native
+	# toolchains in the Linux.  Let's assume:
+	# 1. GCC or SDCC are the only possible Cygwin native compilers
+	# 2. If this is a Window native GCC version, then -w provided
+	#    on the command line (wintool=y)
+
+	if [ -z "$gcc" -a -z "$sdcc" ]; then
+		#
+		# Not GCC or SDCC, must be Windows native
+		#
+		compiler=`cygpath -u "$ccpath"`
+	else
+		if [ "X$wintool" == "Xy" ]; then
+			#
+			# It is a native GCC or SDCC compiler
+			#
+			compiler=`cygpath -u "$ccpath"`
+		else
+			#
+			# GCC or SDCC and not for Windows
+			#
+			compiler="$ccpath"
+		fi
+	fi
+else
+	#
+	# Otherwise, we must be in a Linux environment where there are
+	# only Linux native toolchains
+	#
+	compiler="$ccpath"
+fi
+exefile=`basename "$compiler"`
+
+# Check for some well known, non-GCC Windows native tools that require
+# a special output format as well as special paths
+
+if [ "X$exefile" = "Xez8cc.exe" -o "X$exefile" = "Xzneocc.exe" -o "X$exefile" = "Xez80cc.exe" ]; then
+	fmt=define
+else
+	fmt=std
+fi
+
+# Now process each directory in the directory list
+
+unset response
+for vardef in $varlist; do
+
+	varname=`echo $vardef | cut -d'=' -f1`
+	varvalue=`echo $vardef | cut -d'=' -f2`
+
+    # Handle the output depending on if there is a value for the variable or not
+
+	if [ -z "$varvalue" ]; then
+
+		# Handle the output using the selected format
+
+		if [ "X$fmt" = "Xdefine" ]; then
+			# Treat the first definition differently
+
+			if [ -z "$response" ]; then
+				response="-define:"$varname
+			else
+				response=$response" -define:$varname"
+			fi
+		else
+			# Treat the first definition differently
+
+			if [ -z "$response" ]; then
+				response=-D$varname
+			else
+				response=$response" -D$varname"
+			fi
+		fi
+	else
+
+		# Handle the output using the selected format
+
+		if [ "X$fmt" = "Xdefine" ]; then
+			# Treat the first definition differently
+
+			if [ -z "$response" ]; then
+				response="-define:"$varname=$varvalue
+			else
+				response=$response" -define:$varname=$varvalue"
+			fi
+		else
+			# Treat the first definition differently
+
+			if [ -z "$response" ]; then
+				response=-D$varname=$varvalue
+			else
+				response=$response" -D$varname=$varvalue"
+			fi
+		fi
+	fi
+done
+
+echo $response
+
+
diff --git a/nuttx/tools/incdir.sh b/nuttx/tools/incdir.sh
new file mode 100755
index 000000000..be6a1d07a
--- /dev/null
+++ b/nuttx/tools/incdir.sh
@@ -0,0 +1,211 @@
+#!/bin/bash
+# tools/incdir.sh
+#
+#   Copyright (C) 2008-2009, 2011 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.
+#
+
+# Handle command line options
+
+progname=$0
+wintool=n
+usage="USAGE: $progname [-w] [-d] [-h] <compiler-path> <dir1> [<dir2> [<dir3> ...]]"
+advice="Try '$progname -h' for more information"
+
+while [ ! -z "$1" ]; do 
+	case $1 in
+	-d )
+		set -x
+		;;
+	-w )
+		wintool=y
+		;;
+	-h )
+		echo "$progname is a tool for flexible generation of include path arguments for a"
+		echo "variety of different compilers in a variety of compilation environments"
+		echo ""
+		echo $usage
+		echo ""
+		echo "Where:"
+		echo "	<compiler-path>"
+		echo "		The full path to your compiler"
+		echo "	<dir1> [<dir2> [<dir3> ...]]"
+		echo "		A list of include directories"
+		echo "	-w"
+		echo "		The compiler is a Windows native tool and requires Windows"
+		echo "		style pathnames like C:\\Program Files"
+		echo "	-d"
+		echo "		Enable script debug"
+		;;
+	* )
+		break;
+		;;
+	esac
+	shift
+done
+
+ccpath=$1
+shift
+dirlist=$@
+
+if [ -z "$ccpath" ]; then
+	echo "Missing compiler path"
+	echo $usage
+	echo $advice
+	exit 1
+fi
+
+if [ -z "$dirlist" ]; then
+	echo "Missing include directory list"
+	echo $usage
+	echo $advice
+	exit 1
+fi
+
+#
+# Most compilers support CFLAG options like '-I<dir>' to add include
+# file header paths.  Some (like the Zilog tools), do not.  This script
+# makes the selection of header file paths compiler independent.
+#
+# Below are all known compiler names (as found in the config/*/*/Make.defs
+# files).  If a new compiler is used that has some unusual syntax, then
+# additional logic needs to be added to this file.
+#
+#   NAME                        Syntax
+#   $(CROSSDEV)gcc              -I<dir1> -I<dir2> -I<dir3> ...
+#   sdcc                        -I<dir2> -I<dir2> -I<dir3> ...
+#   $(ZDSBINDIR)/ez8cc.exe      -usrinc:'<dir1>:<dir2>:<dir3>:...`
+#   $(ZDSBINDIR)/zneocc.exe     -usrinc:'<dir1>:<dir2>:<dir3>:...`
+#   $(ZDSBINDIR)/ez80cc.exe     -usrinc:'<dir1>:<dir2>:<dir3>:...`
+#
+# Furthermore, just to make matters more difficult, with Windows based
+# toolchains, we have to use the full windows-style paths to the header
+# files.
+
+os=`uname -o 2>/dev/null || echo "Other"`
+
+# Let's assume that all GCC compiler paths contain the string gcc or
+# g++ and no non-GCC compiler pathes include these substrings
+
+gcc=`echo $ccpath | grep gcc`
+if [ -z "${gcc}" ]; then
+  gcc=`echo $ccpath | grep g++`
+fi
+
+sdcc=`echo $ccpath | grep sdcc`
+
+if [ "X$os" = "XCygwin" ]; then
+	# We can treat Cygwin native toolchains just like Linux native
+	# toolchains in the Linux.  Let's assume:
+	# 1. GCC or SDCC are the only possible Cygwin native compilers
+	# 2. If this is a Window native GCC version, then -w must be
+	#    provided on the command line (wintool=y)
+
+	if [ -z "$gcc" -a -z "$sdcc" ]; then
+		# Not GCC or SDCC, must be Windows native
+		windows=yes
+		compiler=`cygpath -u "$ccpath"`
+	else
+		if [ "X$wintool" == "Xy" ]; then
+			# It is a native GCC or SDCC compiler
+			windows=yes
+			compiler=`cygpath -u "$ccpath"`
+		else
+			# GCC or SDCC and not for Windows
+			windows=no
+			compiler="$ccpath"
+		fi
+	fi
+else
+	# Otherwise, we must be in a Linux environment where there are
+	# only Linux native toolchains
+	windows=no
+	compiler="$ccpath"
+fi
+exefile=`basename "$compiler"`
+
+# Check for some well known, non-GCC Windows native tools that require
+# a special output format as well as special paths
+
+if [ "X$exefile" = "Xez8cc.exe" -o "X$exefile" = "Xzneocc.exe" -o "X$exefile" = "Xez80cc.exe" ]; then
+	fmt=userinc
+else
+	fmt=std
+fi
+
+# Now process each directory in the directory list
+
+unset response
+for dir in $dirlist; do
+
+	# Verify that the include directory exists
+
+	if [ ! -d $dir ]; then
+		echo "Include path '$dir' does not exist"
+		echo $showusage
+		exit 1
+	fi
+
+	# Check if the path needs to be extended for Windows-based tools under Cygwin
+
+	if [ "X$windows" = "Xyes" ]; then
+		path=`cygpath -w $dir`
+	else
+		path=$dir
+	fi
+
+	# Handle the output using the selected format
+
+	if [ "X$fmt" = "Xuserinc" ]; then
+		# Treat the first directory differently
+
+		if [ -z "$response" ]; then
+			response="-usrinc:'"$path
+		else
+			response=$response":$path"
+		fi
+	else
+		# Treat the first directory differently
+
+		if [ -z "$response" ]; then
+			response=-I\"$path\"
+		else
+			response=$response" -I\"$path\""
+		fi
+	fi
+done
+
+if [ "X$fmt" = "Xuserinc" ]; then
+	response=$response"'"
+fi
+
+echo $response
+
+
diff --git a/nuttx/tools/indent.sh b/nuttx/tools/indent.sh
new file mode 100755
index 000000000..938502e0f
--- /dev/null
+++ b/nuttx/tools/indent.sh
@@ -0,0 +1,85 @@
+#!/bin/sh
+############################################################################
+# tools/indent.sh
+#
+#   Copyright (C) 2008, 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.
+#
+############################################################################
+#
+# This script uses the Linux 'indent' utility to re-format C source files
+# to match the coding style that I use.  It differs from my coding style in that
+#
+# - I normally put the trailing */ of a multi-line comment on a separate line,
+# - I usually align things vertically (like '=' in assignments),
+# - indent puts a bogus blank line at the top of the file,
+# - I don't like the way it handles nested conditional compilation intermixed with code.
+#
+
+# Constants
+
+options="-nbad -bap -bbb -nbbo -nbc -bl -bl2 -bls -nbs -cbi2 -ncdw -nce -ci2 -cli0 -cp40 -ncs -nbfda -nbfde -di1 -nfc1 -fca -i2 -l80 -lp -ppi2 -lps -npcs -pmt -nprs -npsl -saf -sai -sbi2 -saw -sc -sob -nss -nut"
+
+usage="USAGE: $0 <in-file> <out-file>"
+
+# Inputs
+
+infile=$1
+outfile=$2
+
+# Verify inputs
+
+if [ -z "$infile" ]; then
+    echo "Missing <in-file>"
+    echo $usage
+    exit 1
+fi
+
+if [ ! -r $infile ]; then
+    echo "Readable $infile does not exist"
+    exit 1
+fi
+
+if [ -z "$outfile" ]; then
+    echo "Missing <out-file>"
+    echo $usage
+    exit 1
+fi
+
+if [ -f $outfile ]; then
+    echo "Removing old $outfile"
+    rm $outfile || { echo "Failed to remove $outfile" ; exit 1 ; }
+fi
+
+# Perform the indentation
+
+indent $options $infile -o $outfile
+
+
diff --git a/nuttx/tools/link.sh b/nuttx/tools/link.sh
new file mode 100755
index 000000000..7927d65c8
--- /dev/null
+++ b/nuttx/tools/link.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+############################################################################
+# tools/link.sh
+#
+#   Copyright (C) 2008 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.
+#
+############################################################################
+#set -x
+
+src=$1
+dest=$2
+
+# Verify that arguments were provided
+
+if [ -z "${src}" -o -z "${dest}" ]; then
+	echo "Missing src and/or dest arguments"
+	exit 1
+fi
+
+# Check if something already exists at the destination path replace it with
+# the new link (which might be different).  Note that we check for the
+# the link (-h) before we check for existence (-e) because a bad link will
+# report that it does not exist.
+
+if [ -h "${dest}" ]; then
+	rm -f "${dest}"
+else
+
+	# If the path exists and is a directory that contains the "fake link"
+	# mark, then treat it like a soft link (i.e., remove the directory)
+
+	if [ -d "${dest}" -a -f "${dest}/.fakelnk" ]; then
+		rm -rf "${dest}"
+	else
+
+		# Does anything exist at the destination path?
+
+		if [ -e "${dest}" ]; then
+
+			# It is something else (like a file) or directory that does
+			# not contain the "fake link" mark
+
+			echo "${dest} already exists but is not a symbolic link"
+			exit 1
+		fi
+	fi
+fi
+
+# Verify that a directory exists at the source path
+
+if [ ! -d "${src}" ]; then
+	echo "No directory at ${src}"
+	exit 1
+fi
+
+# Create the soft link
+
+ln -s "${src}" "${dest}" || \
+	{ echo "Failed to create link: $dest" ; exit 1 ; }
diff --git a/nuttx/tools/mkconfig.c b/nuttx/tools/mkconfig.c
new file mode 100644
index 000000000..fcda8df84
--- /dev/null
+++ b/nuttx/tools/mkconfig.c
@@ -0,0 +1,250 @@
+/****************************************************************************
+ * tools/mkconfig.c
+ *
+ *   Copyright (C) 2007-2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "cfgparser.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define DEFCONFIG ".config"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+ static inline char *getfilepath(const char *name)
+{
+  snprintf(line, PATH_MAX, "%s/" DEFCONFIG, name);
+  line[PATH_MAX] = '\0';
+  return strdup(line);
+}
+
+static void show_usage(const char *progname)
+{
+  fprintf(stderr, "USAGE: %s <abs path to .config>\n", progname);
+  exit(1);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv, char **envp)
+{
+  char *filepath;
+  FILE *stream;
+
+  if (argc != 2)
+    {
+      fprintf(stderr, "Unexpected number of arguments\n");
+      show_usage(argv[0]);
+    }
+
+  filepath = getfilepath(argv[1]);
+  if (!filepath)
+    {
+      fprintf(stderr, "getfilepath failed\n");
+      exit(2);
+    }
+
+  stream= fopen(filepath, "r");
+  if (!stream)
+    {
+      fprintf(stderr, "open %s failed: %s\n", filepath, strerror(errno));
+      exit(3);
+    }
+
+  printf("/* config.h -- Autogenerated! Do not edit. */\n\n");
+  printf("#ifndef __INCLUDE_NUTTX_CONFIG_H\n");
+  printf("#define __INCLUDE_NUTTX_CONFIG_H\n\n");
+  printf("/* Architecture-specific options *************************/\n\n");
+  parse_file(stream);
+  printf("\n/* Sanity Checks *****************************************/\n\n");
+  printf("/* If this is an NXFLAT, external build, then make sure that\n");
+  printf(" * NXFLAT support is enabled in the base code.\n");
+  printf(" */\n\n");
+  printf("#if defined(__NXFLAT__) && !defined(CONFIG_NXFLAT)\n");
+  printf("# error \"NXFLAT support not enabled in this configuration\"\n");
+  printf("#endif\n\n");
+  printf("/* NXFLAT requires PIC support in the TCBs. */\n\n");
+  printf("#if defined(CONFIG_NXFLAT)\n");
+  printf("# undef CONFIG_PIC\n");
+  printf("# define CONFIG_PIC 1\n");
+  printf("#endif\n\n");
+  printf("/* Binary format support is disabled if no binary formats are\n");
+  printf(" * configured (at present, NXFLAT is the only supported binary.\n");
+  printf(" * format).\n");
+  printf(" */\n\n");
+  printf("#if !defined(CONFIG_NXFLAT)\n");
+  printf("# undef CONFIG_BINFMT_DISABLE\n");
+  printf("# define CONFIG_BINFMT_DISABLE 1\n");
+  printf("#endif\n\n");
+  printf("/* The correct way to disable RR scheduling is to set the\n");
+  printf(" * timeslice to zero.\n");
+  printf(" */\n\n");
+  printf("#ifndef CONFIG_RR_INTERVAL\n");
+  printf("# define CONFIG_RR_INTERVAL 0\n");
+  printf("#endif\n\n");
+  printf("/* The correct way to disable filesystem supuport is to set the\n");
+  printf(" * number of file descriptors to zero.\n");
+  printf(" */\n\n");
+  printf("#ifndef CONFIG_NFILE_DESCRIPTORS\n");
+  printf("# define CONFIG_NFILE_DESCRIPTORS 0\n");
+  printf("#endif\n\n");
+  printf("/* If a console is selected, then make sure that there are\n");
+  printf(" * resources for 3 file descriptors and, if any streams are\n");
+  printf(" * selected, also for 3 file streams.\n");
+  printf(" */\n\n");
+  printf("#ifdef CONFIG_DEV_CONSOLE\n");
+  printf("# if CONFIG_NFILE_DESCRIPTORS < 3\n");
+  printf("#   undef CONFIG_NFILE_DESCRIPTORS\n");
+  printf("#   define CONFIG_NFILE_DESCRIPTORS 3\n");
+  printf("# endif\n\n");
+  printf("# if CONFIG_NFILE_STREAMS > 0 && CONFIG_NFILE_STREAMS < 3\n");
+  printf("#  undef CONFIG_NFILE_STREAMS\n");
+  printf("#  define CONFIG_NFILE_STREAMS 3\n");
+  printf("# endif\n");
+  printf("#endif\n\n");
+  printf("/* If priority inheritance is disabled, then do not allocate any\n");
+  printf(" * associated resources.\n");
+  printf(" */\n\n");
+  printf("#if !defined(CONFIG_PRIORITY_INHERITANCE) || !defined(CONFIG_SEM_PREALLOCHOLDERS)\n");
+  printf("# undef CONFIG_SEM_PREALLOCHOLDERS\n");
+  printf("# define CONFIG_SEM_PREALLOCHOLDERS 0\n");
+  printf("#endif\n\n");
+  printf("#if !defined(CONFIG_PRIORITY_INHERITANCE) || !defined(CONFIG_SEM_NNESTPRIO)\n");
+  printf("# undef CONFIG_SEM_NNESTPRIO\n");
+  printf("# define CONFIG_SEM_NNESTPRIO 0\n");
+  printf("#endif\n\n");
+  printf("/* If no file descriptors are configured, then make certain no\n");
+  printf(" * streams are configured either.\n");
+  printf(" */\n\n");
+  printf("#if CONFIG_NFILE_DESCRIPTORS == 0\n");
+  printf("# undef CONFIG_NFILE_STREAMS\n");
+  printf("# define CONFIG_NFILE_STREAMS 0\n");
+  printf("#endif\n\n");
+  printf("/* There must be at least one memory region. */\n\n");
+  printf("#ifndef CONFIG_MM_REGIONS\n");
+  printf("# define CONFIG_MM_REGIONS 1\n");
+  printf("#endif\n\n");
+  printf("/* If no file streams are configured, then make certain that buffered I/O\n");
+  printf(" * support is disabled\n");
+  printf(" */\n\n");
+  printf("#if CONFIG_NFILE_STREAMS == 0\n");
+  printf("# undef CONFIG_STDIO_BUFFER_SIZE\n");
+  printf("# define CONFIG_STDIO_BUFFER_SIZE 0\n");
+  printf("#endif\n\n");
+  printf("/* We are building a kernel version of the C library, then some user-space features\n");
+  printf(" * need to be disabled\n");
+  printf(" */\n\n");
+  printf("#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__)\n");
+  printf("# undef CONFIG_STDIO_BUFFER_SIZE\n");
+  printf("# define CONFIG_STDIO_BUFFER_SIZE 0\n");
+  printf("# undef CONFIG_NUNGET_CHARS\n");
+  printf("# define CONFIG_NUNGET_CHARS 0\n");
+  printf("#endif\n\n");
+  printf("/* If no standard C buffered I/O is not supported, then line-oriented buffering\n");
+  printf(" * cannot be supported.\n");
+  printf(" */\n\n");
+  printf("#if CONFIG_STDIO_BUFFER_SIZE == 0\n");
+  printf("# undef CONFIG_STDIO_LINEBUFFER\n");
+  printf("#endif\n\n");
+  printf("/* If the maximum message size is zero, then we assume that message queues\n");
+  printf(" * support should be disabled\n");
+  printf(" */\n\n");
+  printf("#if CONFIG_MQ_MAXMSGSIZE <= 0 && !defined(CONFIG_DISABLE_MQUEUE)\n");
+  printf("# define CONFIG_DISABLE_MQUEUE 1\n");
+  printf("#endif\n\n");
+  printf("/* If mountpoint support in not included, then no filesystem can be supported */\n\n");
+  printf("#ifdef CONFIG_DISABLE_MOUNTPOINT\n");
+  printf("# undef CONFIG_FS_FAT\n");
+  printf("# undef CONFIG_FS_ROMFS\n");
+  printf("#endif\n\n");
+  printf("/* Check if any readable and writable filesystem (OR USB storage) is supported */\n\n");
+  printf("#undef CONFIG_FS_READABLE\n");
+  printf("#undef CONFIG_FS_WRITABLE\n");
+  printf("#if defined(CONFIG_FS_FAT) || defined(CONFIG_FS_ROMFS) || defined(CONFIG_USBSTRG) || \\\n");
+  printf("    defined(CONFIG_FS_NXFFS) || defined(CONFIG_APPS_BINDIR)\n");
+  printf("# define CONFIG_FS_READABLE 1\n");
+  printf("#endif\n\n");
+  printf("#if defined(CONFIG_FS_FAT) || defined(CONFIG_USBSTRG) || defined(CONFIG_FS_NXFFS)\n");
+  printf("# define CONFIG_FS_WRITABLE 1\n");
+  printf("#endif\n\n");
+  printf("/* There can be no network support with no socket descriptors */\n\n");
+  printf("#if CONFIG_NSOCKET_DESCRIPTORS <= 0\n");
+  printf("# undef CONFIG_NET\n");
+  printf("#endif\n\n");
+  printf("/* Conversely, if there is no network support, there is no need for\n");
+  printf(" * socket descriptors\n");
+  printf(" */\n\n");
+  printf("#ifndef CONFIG_NET\n");
+  printf("# undef CONFIG_NSOCKET_DESCRIPTORS\n");
+  printf("# define CONFIG_NSOCKET_DESCRIPTORS 0\n");
+  printf("#endif\n\n");
+  printf("/* Protocol support can only be provided on top of basic network support */\n\n");
+  printf("#ifndef CONFIG_NET\n");
+  printf("# undef CONFIG_NET_TCP\n");
+  printf("# undef CONFIG_NET_UDP\n");
+  printf("# undef CONFIG_NET_ICMP\n");
+  printf("#endif\n\n");
+  printf("/* Verbose debug and sub-system debug only make sense if debug is enabled */\n\n");
+  printf("#ifndef CONFIG_DEBUG\n");
+  printf("# undef CONFIG_DEBUG_VERBOSE\n");
+  printf("# undef CONFIG_DEBUG_SCHED\n");
+  printf("# undef CONFIG_DEBUG_MM\n");
+  printf("# undef CONFIG_DEBUG_PAGING\n");
+  printf("# undef CONFIG_DEBUG_DMA\n");
+  printf("# undef CONFIG_DEBUG_FS\n");
+  printf("# undef CONFIG_DEBUG_LIB\n");
+  printf("# undef CONFIG_DEBUG_BINFMT\n");
+  printf("# undef CONFIG_DEBUG_NET\n");
+  printf("# undef CONFIG_DEBUG_USB\n");
+  printf("# undef CONFIG_DEBUG_GRAPHICS\n");
+  printf("# undef CONFIG_DEBUG_GPIO\n");
+  printf("# undef CONFIG_DEBUG_STACK\n");
+  printf("#endif\n\n");
+  printf("#endif /* __INCLUDE_NUTTX_CONFIG_H */\n");
+  fclose(stream);
+  return 0;
+}
diff --git a/nuttx/tools/mkdeps.sh b/nuttx/tools/mkdeps.sh
new file mode 100755
index 000000000..6d83f2ca0
--- /dev/null
+++ b/nuttx/tools/mkdeps.sh
@@ -0,0 +1,196 @@
+#!/bin/bash
+############################################################################
+# tools/mkdeps.sh
+#
+#   Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+#
+# Usage:
+
+show_usage ()
+{
+  echo ""
+  echo "$progname  [OPTIONS] CC -- CFLAGS -- file [file [file...]]"
+  echo ""
+  echo "Where:"
+  echo "  CC"
+  echo "    A variable number of arguments that define how to execute the compiler"
+  echo "  CFLAGS"
+  echo "    The compiler compilation flags"
+  echo "  file"
+  echo "    One or more C files whose dependencies will be checked.  Each file is expected"
+  echo "    to reside in the current directory unless --dep-path is provided on the command line"
+  echo ""
+  echo "And [OPTIONS] include:"
+  echo "  --dep-debug"
+  echo "    Enable script debug"
+  echo "  --dep-path <path>"
+  echo "    Do not look in the current directory for the file.  Instead, look in <path> to see"
+  echo "    if the file resides there.  --dep-path may be used multiple times to specify"
+  echo "    multiple alternative location"
+  echo "  --winpaths <TOPDIR>"
+  echo "    CC generates dependency lists using Windows paths (e.g., C:\blablah\blabla).  This"
+  echo "    switch instructs the script to use 'cygpath' to convert the Windows paths to Cygwin"
+  echo "    paths"
+  echo "  --help"
+  echo "    Shows this message and exits"
+  exit 1
+}
+
+dodep ()
+{
+  unset fullpath
+  if [ -z "$altpath" ]; then
+    if [ -r $1 ]; then
+      fullpath=$1
+    else
+      echo "# ERROR: No readable file at $1"
+      show_usage
+    fi
+  else
+    for path in $altpath; do
+      tmppath=$path/$1
+      if [ -r $tmppath ]; then
+        fullpath=$tmppath
+        break;
+      fi
+    done
+    if [ -z "$fullpath" ]; then
+      echo "# ERROR: No readable file for $1 found at any location"
+      show_usage
+    fi
+  fi
+
+  $cc -M $cflags $fullpath || \
+    ( echo "# ERROR: $cc -M $cflags $fullpath FAILED"; exit 4; )
+}
+
+unset cc
+unset cflags
+unset files
+unset args
+unset altpath
+winpaths=n
+unset topdir
+
+# Accumulate CFLAGS up to "--"
+progname=$0
+while [ ! -z "$1" ]; do
+  case $1 in
+  -- )
+    cc=$cflags
+    cflags=$args
+    args=
+    ;;
+  --dep-debug )
+    if [ -z "$args" ]; then
+      set -x
+    else
+      args="$args $1"
+    fi
+    ;;
+  --dep-path )
+    if [ -z "$args" ]; then
+      shift
+      altpath="$altpath $1"
+    else
+      args="$args $1"
+    fi
+    ;;
+  --winpaths )
+    if [ -z "$args" ]; then
+      shift
+      winpaths=y
+      topdir=$1
+    else
+      args="$args $1"
+    fi
+    ;;
+  --help )
+    show_usage
+    ;;
+  *)
+    args="$args $1"
+    ;;
+  esac
+  shift
+done
+files=$args
+
+if [ -z "$cc" ]; then
+  echo "ERROR: No compiler specified"
+  show_usage
+  exit 1
+fi
+
+if [ -z "$files" ]; then
+  # Don't report an error -- this happens normally in some configurations
+  echo "# No files specified for dependency generataion"
+  exit 0
+fi
+
+# Check if this compiler generates Cygwin/Linux paths or Windows paths
+
+if [ "X${winpaths}" = "Xy" ]; then
+    # We will have to parse and modify each dependency (yech)
+    # Make sure a valid TOPDIR argument was provided
+
+    if [ -z "$topdir" -o ! -d $topdir ]; then
+    	echo "<TOPDIR> not specified or does not exist: $topdir"
+    	show_usage
+    	exit 1
+    fi
+ 
+    # Get the top dir expressed like the Windows GCC would use it, except
+    # with forward slashs
+
+    wtopdir=`cygpath -w ${topdir} | sed -e "s,\\\\\\,/,g"`
+
+    # Then get the dependency and perform conversions on it to make it
+    # palatable to the Cygwin make.  This is probably not sufficiently
+    # general to work on all platforms (like if your disk is not C:).
+
+    for file in $files ; do
+        dodep $file | sed -e "s,\\\,/,g" -e "s,${wtopdir},${topdir},g" \
+                          -e "s,/ ,\\\ ,g" -e "s,c:/,/cygdrive/c/,g" \
+                          -e "s,/$,\\\,g"
+    done
+else
+    # For normal Cygwin/Linux GCC, the dependency paths are in the
+    # correct form and can simply be echoed on stdout
+
+    for file in $files ; do
+        dodep $file
+    done
+fi
+
diff --git a/nuttx/tools/mkexport.sh b/nuttx/tools/mkexport.sh
new file mode 100755
index 000000000..7da6d19eb
--- /dev/null
+++ b/nuttx/tools/mkexport.sh
@@ -0,0 +1,309 @@
+#!/bin/bash
+# tools/mkexport.sh
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+# TODO:
+# 1. This script assumes the host archiver ar may not be appropriate for
+#    non-GCC toolchains
+# 2. For the kernel build, the user libriars should be built into some
+#    libuser.a.  The list of user libraries would have to accepted with
+#    some new argument, perhaps -u.
+
+# Get the input parameter list
+
+USAGE="USAGE: $0 [-d] [-z] -t <top-dir> [-x <lib-ext>] -l \"lib1 [lib2 [lib3 ...]]\""
+unset TOPDIR
+unset LIBLIST
+unset TGZ
+LIBEXT=.a
+
+while [ ! -z "$1" ]; do
+	case $1 in
+ 		-d )
+			set -x
+			;;
+ 		-l )
+			shift
+			LIBLIST=$1
+			;;
+		-t )
+			shift
+			TOPDIR=$1
+			;;
+ 		-x )
+			shift
+			LIBEXT=$1
+			;;
+ 		-z )
+			TGZ=y
+			;;
+		-h )
+			echo $USAGE
+			exit 0
+			;;
+		* )
+			echo "Unrecognized argument: $1"
+			echo $USAGE
+			exit 1
+			;;
+		esac
+	shift
+done
+
+# Check arguments
+
+if [ -z "${TOPDIR}" -o -z "${LIBLIST}" ]; then
+	echo "MK: Missing required arguments"
+	echo $USAGE
+	exit 1
+fi
+
+if [ ! -d "${TOPDIR}" ]; then
+	echo "MK: Directory ${TOPDIR} does not exist"
+	exit 1
+fi
+
+# Get the version string
+
+if [ ! -f "${TOPDIR}/.version" ]; then
+	echo "MK: File ${TOPDIR}/.version does not exist"
+	exit 1
+fi
+
+source "${TOPDIR}/.version"
+if [ ! -z "${CONFIG_VERSION_STRING}" -a "${CONFIG_VERSION_STRING}" != "0.0" ]; then
+	VERSION="-${CONFIG_VERSION_STRING}"
+fi
+
+# Create the export directory
+
+EXPORTSUBDIR="nuttx-export${VERSION}"
+EXPORTDIR="${TOPDIR}/${EXPORTSUBDIR}"
+
+# If the export directory already exists, then remove it and create a new one
+
+if [ -d "${EXPORTDIR}" ]; then
+	echo "MK: Removing old export directory"
+	rm -rf "${EXPORTDIR}"
+fi
+
+# Remove any possible previous results
+
+rm -f "${EXPORTDIR}.tar"
+rm -f "${EXPORTDIR}.zip"
+rm -f "${EXPORTDIR}.tar.gz"
+
+# Create the export directory and some of its subdirectories
+
+mkdir "${EXPORTDIR}" || { echo "MK: 'mkdir ${EXPORTDIR}' failed"; exit 1; }
+mkdir "${EXPORTDIR}/startup" || { echo "MK: 'mkdir ${EXPORTDIR}/startup' failed"; exit 1; }
+mkdir "${EXPORTDIR}/libs" || { echo "MK: 'mkdir ${EXPORTDIR}/libs' failed"; exit 1; }
+mkdir "${EXPORTDIR}/build" || { echo "MK: 'mkdir ${EXPORTDIR}/build' failed"; exit 1; }
+mkdir "${EXPORTDIR}/arch" || { echo "MK: 'mkdir ${EXPORTDIR}/arch' failed"; exit 1; }
+
+# Verify that we have a Make.defs file.
+
+if [ ! -f "${TOPDIR}/Make.defs" ]; then
+	echo "MK: Directory ${TOPDIR}/Make.defs does not exist"
+	exit 1
+fi
+
+# Copy the Make.defs files, but disable windows path conversions
+
+grep -v "WINTOOL[ \t]*=[ \t]y" "${TOPDIR}/Make.defs"  > "${EXPORTDIR}/Make.defs"
+
+# Extract information from the Make.defs file.  A Makefile can do this best
+
+make -C "${TOPDIR}/tools" -f Makefile.export TOPDIR="${TOPDIR}" EXPORTDIR="${EXPORTDIR}"
+source "${EXPORTDIR}/makeinfo.sh"
+rm -f "${EXPORTDIR}/makeinfo.sh"
+rm -f "${EXPORTDIR}/Make.defs"
+
+# Verify the build info that we got from makeinfo.sh
+
+if [ ! -d "${ARCHDIR}" ]; then
+	echo "MK: Directory ${ARCHDIR} does not exist"
+	exit 1
+fi
+
+# Is there a linker script in this configuration?
+
+if [ ! -z "${LDPATH}" ]; then
+
+	# Apparently so.  Verify that the script exists
+
+	if [ ! -f "${LDPATH}" ]; then
+		echo "MK: File ${LDPATH} does not exist"
+		exit 1
+	fi
+
+	# Copy the linker script
+
+	cp --preserve=all "${LDPATH}" "${EXPORTDIR}/build/." || \
+		{ echo "MK: cp ${LDPATH} failed"; exit 1; }
+fi
+
+# Save the compilation options
+
+echo "ARCHCFLAGS = ${ARCHCFLAGS}" >"${EXPORTDIR}/build/Make.defs"
+echo "ARCHCXXFLAGS = ${ARCHCXXFLAGS}" >>"${EXPORTDIR}/build/Make.defs"
+
+# Copy the NuttX include directory (retaining attributes and following symbolic links)
+
+cp -LR --preserve=all "${TOPDIR}/include" "${EXPORTDIR}/." || \
+	{ echo "MK: 'cp ${TOPDIR}/include' failed"; exit 1; }
+find "${EXPORTDIR}/include" -name .svn | xargs rm -rf
+
+# Copy the startup object file(s)
+
+make -C ${ARCHDIR} export_head TOPDIR=${TOPDIR} EXPORT_DIR="${EXPORTDIR}"
+
+# Copy architecture-specific header files into the arch export sub-directory.
+# This is tricky because each architecture does things in a little different
+# way.
+#
+# First copy any header files in the architecture src/ sub-directory (some
+# architectures keep all of the header files there, some a few, and others
+# none
+
+cp -f "${ARCHDIR}"/*.h "${EXPORTDIR}"/arch/. 2>/dev/null
+
+# Then look a list of possible places where other architecture-specific
+# header files might be found.  If those places exist (as directories or
+# as symbolic links to directories, then copy the header files from 
+# those directories into the EXPORTDIR
+
+ARCH_HDRDIRS="arm armv7-m avr avr32 board common chip mips32"
+for hdir in $ARCH_HDRDIRS; do
+
+	# Does the directory (or symbolic link) exist?
+
+	if [ -d "${ARCHDIR}/${hdir}" -o -h "${ARCHDIR}/${hdir}" ]; then
+
+		# Yes.. create a export sub-directory of the same name
+
+		mkdir "${EXPORTDIR}/arch/${hdir}" || \
+			{ echo "MK: 'mkdir ${EXPORTDIR}/arch/${hdir}' failed"; exit 1; }
+
+		# Then copy the header files (only) into the new directory
+
+		cp -f "${ARCHDIR}"/${hdir}/*.h "${EXPORTDIR}"/arch/${hdir}/. 2>/dev/null
+
+		# One architecture has low directory called "chip" that holds the
+		# header files
+
+		if [ -d "${ARCHDIR}/${hdir}/chip" ]; then
+
+			# Yes.. create a export sub-directory of the same name
+
+			mkdir "${EXPORTDIR}/arch/${hdir}/chip" || \
+				{ echo "MK: 'mkdir ${EXPORTDIR}/arch/${hdir}/chip' failed"; exit 1; }
+
+			# Then copy the header files (only) into the new directory
+
+			cp -f "${ARCHDIR}"/${hdir}/chip/*.h "${EXPORTDIR}"/arch/${hdir}/chip/. 2>/dev/null
+		fi
+	fi
+done
+
+# Copy OS internal header files as well.  They are used by some architecture-
+# specific header files.
+
+mkdir "${EXPORTDIR}/arch/os" || \
+	{ echo "MK: 'mkdir ${EXPORTDIR}/arch/${hdir}/chip' failed"; exit 1; }
+cp -f "${TOPDIR}"/sched/*.h "${EXPORTDIR}"/arch/os/. 2>/dev/null
+
+# Add the board library to the list of libraries
+
+if [ -f "${ARCHDIR}/board/libboard${LIBEXT}" ]; then
+	LIBLIST="${LIBLIST} ${ARCHSUBDIR}/board/libboard${LIBEXT}"
+fi
+
+# Then process each library
+
+for lib in ${LIBLIST}; do
+	if [ ! -f "${TOPDIR}/${lib}" ]; then
+		echo "MK: Library ${TOPDIR}/${lib} does not exist"
+		exit 1
+	fi
+
+	# Get some shorter names for the library
+
+	libname=`basename ${lib} ${LIBEXT}`
+	shortname=`echo ${libname} | sed -e "s/^lib//g"`
+
+	# Copy the application library unmodified
+
+	if [ "X${libname}" = "Xlibapps" ]; then
+		cp --preserve=all "${TOPDIR}/${lib}" "${EXPORTDIR}/libs/." || \
+			{ echo "MK: cp ${TOPDIR}/${lib} failed"; exit 1; }
+	else
+
+		# Create a temporary directory and extract all of the objects there
+		# Hmmm.. this probably won't work if the archiver is not 'ar'
+
+		mkdir "${EXPORTDIR}/tmp" || \
+			{ echo "MK: 'mkdir ${EXPORTDIR}/tmp' failed"; exit 1; }
+		cd "${EXPORTDIR}/tmp" || \
+			{ echo "MK: 'cd ${EXPORTDIR}/tmp' failed"; exit 1; }
+		ar x "${TOPDIR}/${lib}"
+
+		# Rename each object file (to avoid collision when they are combined)
+		# and add the file to libnuttx
+
+		for file in `ls`; do
+			mv "${file}" "${shortname}-${file}"
+			ar rcs "${EXPORTDIR}/libs/libnuttx${LIBEXT}" "${shortname}-${file}"
+		done
+
+		cd "${TOPDIR}" || \
+			{ echo "MK: 'cd ${TOPDIR}' failed"; exit 1; }
+		rm -rf "${EXPORTDIR}/tmp"
+	fi
+done
+
+# Now tar up the whole export directory
+
+cd "${TOPDIR}" || \
+	{ echo "MK: 'cd ${TOPDIR}' failed"; exit 1; }
+
+if [ "X${TGZ}" = "Xy" ]; then
+	tar cvf "${EXPORTSUBDIR}.tar" "${EXPORTSUBDIR}" 1>/dev/null 2>&1
+	gzip -f "${EXPORTSUBDIR}.tar"
+else
+	zip -r "${EXPORTSUBDIR}.zip" "${EXPORTSUBDIR}" 1>/dev/null 2>&1
+fi
+
+# Clean up after ourselves
+
+rm -rf "${EXPORTSUBDIR}" 
diff --git a/nuttx/tools/mkimage.sh b/nuttx/tools/mkimage.sh
new file mode 100755
index 000000000..f64dfde85
--- /dev/null
+++ b/nuttx/tools/mkimage.sh
@@ -0,0 +1,289 @@
+#!/bin/bash
+#
+# File: mkimage.sh
+#
+# Copyright (C) 2002 RidgeRun, Inc.
+# Author: RidgeRun, Inc  <skranz@@ridgerun.com>
+#  - Adapted for the Cadenux environment, 9-6-02, Gregory Nutt
+#  - Added --EAddr option, 6-18-03, Gregory Nutt
+#
+# This program is free software; you can redistribute  it and/or modify it
+# under  the terms of  the GNU General  Public License as published by the
+# Free Software Foundation;  either version 2 of the  License, or (at your
+# option) any later version.
+#
+# THIS  SOFTWARE  IS  PROVIDED  ``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 AUTHOR  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.
+#
+# You should have received a copy of the  GNU General Public License along
+# with this program; if not, write  to the Free Software Foundation, Inc.,
+# 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+########################################################
+# Description:
+#   -----------
+#   Scenario #1
+#   -----------
+#   This utility was developed by RidgeRun for the
+#   purpose of converting a standard binary executable
+#   image (such as ELF) into a special format (RR
+#   format) suitable for quick downloads to the target
+#   TI925 RidgeRun Bootloader (rrload). The image is
+#   produced by constructing a special header which is
+#   then tacked onto the front of the supplied binary
+#   image.  The resulting binary image is smaller than
+#   what would normally be encountered with traditional
+#   download formats (such as SREC or uuencoded; both
+#   ascii based). The special header at the front of the
+#   image is used to guide the target's rrload (a
+#   booloader developed by RidgeRun Inc). The header
+#   data contains a field representing the total byte
+#   count of the binary data following the header as
+#   well as a field that indicates the load address of
+#   run image. Additionally, a field exists in the
+#   header which indicates the image's entry point which
+#   could be called by the bootloader to invoked the
+#   just downloaded program.
+#   -----------
+#   Scenario #2
+#   -----------
+#   If the supplied image is not a standard binary
+#   executagle image then that is ok too, a header is 
+#   constructed and tacked onto the front of the supplied
+#   binary data forming the new binary image (in rr format).
+#   In this case the EntryAddr is set to 0xFFFFFFFF by 
+#   default and the LoadAddr is set to   0x00000000 by
+#   default unless otherwise indicated by command line 
+#   arguments -LEntry and -LAddr which if used are assumed
+#   to be in hexidecimal units.
+#   
+#   -----------
+#   Scenario #3
+#   -----------
+#
+#   Read/Write file system (like JFFS) that will not
+#   work if rrload stores a 20 byte header at the beginning
+#   of the flashed component image
+#
+#   mkimage [--NoHeader ] <input-bin> <out-RR>
+#
+# Usage: 
+#   mkimage [--LAddr h] [--EAddr h] [--NoHeader] <input-bin> <out-RR> 
+#  
+# Examples: 
+#   $ mkimage linux linux.rr
+#     ..or..
+#   $ mkimage -LAddr 10008000 -EAddr 10008000 vmlinux vmlinux.rr
+#     ..or..
+#   $ mkimage --NoHeader fileSys.gz fileSys.gz.rr
+#     ..or..
+#   $ mkimage --LAddr A00 fileSys.gz fileSys.gz.rr
+#     ..or..
+#   $ mkimage --LAddr A00 fileSys.gz fileSys.gz.rr
+#                     ^
+#                     |
+#                 Assumed hex units. 
+#                 Please omit the 
+#                 leading "0x".
+########################################################
+
+if [ $# -lt 2 ] ; then
+  echo "Error: missing argument"
+  echo "Usage: mkimage [--Prefix prefix] [--LAddr n] [--EAddr n] [--NoHeader] <input-Bin> <out-RR>"
+  exit 1
+fi
+
+# Pleae Note the following formatting inconsistency.
+# (Sorry, for now this is necessary)
+LoadAddr="00000000"     # Note: hex val *without* proceeding "0x"
+EntryAddr="0xFFFFFFFF"  # Note: hex val *with* procedding  "0x"
+
+unset prefix
+Header="y"
+LAddrSupplied="n"
+EAddrSupplied="n"
+compress="n"
+
+while [ $# -gt 0 ] ; do
+  case "$1" in
+  --Prefix)
+     shift;
+     prefix="$1"
+     shift
+     ;;
+  --LAddr )
+     shift
+     LoadAddr="$1"
+     # Next, make the supplied LAddr exactly 8 hex chars long.
+     LoadAddr="0000000${LoadAddr}"
+     LoadAddr=$(echo $LoadAddr | sed -e "s/^.*\(........\)$/\1/g")
+     LAddrSupplied="y"
+     shift
+     ;;
+  --EAddr )
+     shift
+     EntryAddr="$1"
+     # Next, make the supplied LEntry exactly 8 hex chars long.
+     EntryAddr="0000000${EntryAddr}"
+     EntryAddr=$(echo $EntryAddr | sed -e "s/^.*\(........\)$/\1/g")
+     EntryAddr=0x$EntryAddr
+     EAddrSupplied="y"
+     shift
+     ;;
+  --NoHeader )
+     Header="n"
+     shift
+     ;;
+  --compress )
+     compress="y"
+     shift
+     ;;
+  *)
+    break
+  ;;
+  esac
+done
+
+if [ ! $# -eq 2 ] ; then
+  echo "Error: invalid argument set."
+  echo "Usage: mkimage [--LAddr h] <input-Bin> <out-RR>"
+  exit 1
+fi
+
+binary=$1.stripped
+outbin=$2
+
+cp $1 $binary
+FileTypeExec=$(${prefix}objdump -f $binary 2>/dev/null | egrep "EXEC_P")
+
+if [ ! -z "$FileTypeExec" ] ; then
+
+  # -----------
+  # Scenario #1
+  # -----------
+  # We have an executable style binary (like ELF, etc).
+  # So...
+  # ---------------------------------
+  # Next  | Create the binary image data.
+  # ---------------------------------
+    ${prefix}strip ${binary}
+    ${prefix}objcopy -S -O binary $binary ${binary}.binary
+  # ---------------------------------
+  # Next  | Create compress image if requested
+  # ---------------------------------
+    image_file=${binary}.binary
+    if [  "$compress" = "y" ] ; then
+	gzip -f -9 -c ${binary}.binary        > ${binary}.binary.gz
+	image_file=${binary}.binary.gz
+    fi
+  # ---------------------------------
+  # Next  | Create the header information (ascii) needed 
+  #       | by the TI925 bootloader. This includes the
+  #       | load address, entry address and byte count of
+  #       | the binary executable data which will follow it.
+  # ---------------------------------
+    if [ "$LAddrSupplied" = "n" ] ; then
+      # Next, Since LoadAddr not already supplied by user we'll
+      # derive it by consulting the binary executable file.
+      LoadAddr=$(${prefix}objdump -h ${binary} | grep "  0 \.")
+      LoadAddr=$(echo $LoadAddr | cut -d' ' -f4) # eight hex chars
+    fi
+    if [ "$EAddrSupplied" = "n" ] ; then
+      # Next, Since EntryAddr not already supplied by user we'll
+      # derive it by consulting the binary executable file.
+      EntryAddr=$(${prefix}objdump -f ${binary} | grep -i "start")
+      EntryAddr=$(echo $EntryAddr | cut -d' ' -f3) # eight hex chars
+    fi
+    # Next, Compute byte length of binary portion.
+    numBytes=$(wc --bytes $image_file)
+    numBytes=$(echo $numBytes | cut -d' ' -f1)
+    numBytes=$(echo 16o $numBytes p | dc) # converts to hex.
+    # Next, make the numBytes string exactly 8 hex chars long.
+    numBytes="0000000${numBytes}"
+    numBytes=$(echo $numBytes | sed -e "s/^.*\(........\)$/\1/g")
+  # ---------------------------------
+  # Next  | Combine the ascii header information
+  #       | with the binary image to make the 
+  #       | final downloadable *mostly* binary 
+  #       | image.
+  # ---------------------------------
+    rm -f ${outbin}
+    echo ">LoadAddr :0x${LoadAddr}"     >> ${outbin}
+    if [ "${Header}" = "y" ]; then
+	echo ">EntryAddr:${EntryAddr}"  >> ${outbin}
+    else
+	echo ">NoHeader"  >> ${outbin}
+    fi
+    echo ">NumBytes :0x${numBytes}"     >> ${outbin}
+    cat $image_file            >> ${outbin}
+  # ---------------------------------
+  # Cleanup and exit
+  # ---------------------------------
+    rm -f ${binary}.binary $image_file
+    exit 0
+
+else
+
+  # -----------
+  # Scenario #2
+  # -----------
+  # Just a binary image but not a standard executable 
+  # style binary (like ELF, etc). Might be a compressed
+  # filesystem image, etc.
+  # So...
+  # ---------------------------------
+  # Next  | Create the header information (ascii) needed 
+  #       | by the TI925 bootloader. This includes the
+  #       | load address, entry address and byte count of
+  #       | the binary file which will follow it.
+  # ---------------------------------
+  #       | Create compress image if requested
+  # ---------------------------------
+  #
+    image_file=${binary}
+    if [  "$compress" = "y" ] ; then
+	gzip -f -9 -c ${image_file}        > ${image_file}.gz
+	image_file=${image_file}.gz
+    fi
+  #
+  # Note: The LoadAddr and EntryAddr are already established
+  # for us at this point, but we will need to compute the 
+  # byte length of binary portion next.
+  #
+    numBytes=$(wc --bytes ${image_file})
+    numBytes=$(echo $numBytes | cut -d' ' -f1)
+    numBytes=$(echo 16o $numBytes p | dc) # converts to hex.
+    # Next, make the numBytes string exactly 8 hex chars long.
+    numBytes="0000000${numBytes}"
+    numBytes=$(echo $numBytes | sed -e "s/^.*\(........\)$/\1/g")
+  #
+  # ---------------------------------
+  # Next  | Combine the ascii header information
+  #       | with the binary image to make the 
+  #       | final downloadable *mostly* binary 
+  #       | image.
+  # ---------------------------------
+  #
+    rm -f ${outbin}
+    echo ">LoadAddr :0x${LoadAddr}" >> ${outbin}
+    if [ ${Header} = "y" ]; then
+	echo ">EntryAddr:${EntryAddr}"  >> ${outbin}
+    else
+	echo ">NoHeader"  >> ${outbin}
+    fi
+    echo ">NumBytes :0x${numBytes}" >> ${outbin}
+    cat ${image_file}                   >> ${outbin}
+  # ---------------------------------
+  # Cleanup and exit
+  # ---------------------------------
+    rm -f ${image_file}.gz
+    exit 0
+fi
diff --git a/nuttx/tools/mknulldeps.sh b/nuttx/tools/mknulldeps.sh
new file mode 100755
index 000000000..6dc3e9635
--- /dev/null
+++ b/nuttx/tools/mknulldeps.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+# tools/mknulldeps.sh
+#
+#   Copyright (C) 2008 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.
+#
+echo "# The selected toolchain does not support dependency generation"
\ No newline at end of file
diff --git a/nuttx/tools/mkromfsimg.sh b/nuttx/tools/mkromfsimg.sh
new file mode 100755
index 000000000..b628d2419
--- /dev/null
+++ b/nuttx/tools/mkromfsimg.sh
@@ -0,0 +1,261 @@
+#!/bin/bash
+############################################################################
+# tools/mkromfsimg.sh
+#
+#   Copyright (C) 2008, 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+# Environmental stuff
+
+wd=`pwd`
+workingdir=$wd/img
+rcsfile=rcS
+rcstemplate=$rcsfile.template
+romfsimg=romfs.img
+headerfile=nsh_romfsimg.h
+
+# Get the input parameters
+
+topdir=$1
+usage="USAGE: $0 <topdir>"
+
+if [ -z "$topdir" -o ! -d "$topdir" ]; then
+    echo "The full path to the NuttX base directory must be provided on the command line"
+    echo $usage
+    exit 1
+fi
+
+# Extract all values from the .config in the $topdir that contains all of the NuttX
+# configuration settings.  The .config file was intended to be include-able by makefiles
+# and source-able by scripts.  Unfortunately,there are too many syntactic differents
+# to make that practical
+
+if [ ! -r $topdir/.config ]; then
+    echo "No readable file at $topdir/.config"
+    echo "Has NuttX been configured?"
+    exit 1
+fi
+
+romfsetc=`grep CONFIG_NSH_ROMFSETC= $topdir/.config | cut -d'=' -f2`
+disablempt=`grep CONFIG_DISABLE_MOUNTPOINT= $topdir/.config | cut -d'=' -f2`
+disablescript=`grep CONFIG_NSH_DISABLESCRIPT= $topdir/.config | cut -d'=' -f2`
+ndescriptors=`grep CONFIG_NFILE_DESCRIPTORS= $topdir/.config | cut -d'=' -f2`
+devconsole=`grep CONFIG_DEV_CONSOLE= $topdir/.config | cut -d'=' -f2`
+romfs=`grep CONFIG_FS_ROMFS= $topdir/.config | cut -d'=' -f2`
+romfsmpt=`grep CONFIG_NSH_ROMFSMOUNTPT= $topdir/.config | cut -d'=' -f2`
+initscript=`grep CONFIG_NSH_INITSCRIPT= $topdir/.config | cut -d'=' -f2`
+romfsdevno=`grep CONFIG_NSH_ROMFSDEVNO= $topdir/.config | cut -d'=' -f2`
+romfssectsize=`grep CONFIG_NSH_ROMFSSECTSIZE= $topdir/.config | cut -d'=' -f2`
+fatfs=`grep CONFIG_FS_FAT= $topdir/.config | cut -d'=' -f2`
+fatdevno=`grep CONFIG_NSH_FATDEVNO= $topdir/.config | cut -d'=' -f2`
+fatsectsize=`grep CONFIG_NSH_FATSECTSIZE= $topdir/.config | cut -d'=' -f2`
+fatnsectors=`grep CONFIG_NSH_FATNSECTORS= $topdir/.config | cut -d'=' -f2`
+fatmpt=`grep CONFIG_NSH_FATMOUNTPT= $topdir/.config | cut -d'=' -f2`
+
+# The following settings are required for general ROMFS support
+#
+# Mountpoint support must be enabled
+
+if [ "X$disablempt" = "Xy" ]; then
+    echo "Mountpoint support is required for this feature"
+    echo "Set CONFIG_DISABLE_MOUNTPOINT=n to continue"
+    exit 1
+fi
+
+# Scripting support must be enabled
+
+if [ "X$disablescript" = "Xy" ]; then
+    echo "NSH scripting support is required for this feature"
+    echo "Set CONFIG_NSH_DISABLESCRIPT=n to continue"
+    exit 1
+fi
+
+# We need at least 2 file descriptors 1 for the ROMFS mount and one for
+# FAT mount performed in rcS.  That still wouldn't be enough to to do much
+# with NSH
+
+if [ -z "$ndescriptors" -o "$ndescriptors" -lt 2 ]; then
+    echo "No file descriptors have been allocated"
+    if [ "X$devconsole" = "Xy" ]; then
+        echo "Set CONFIG_NFILE_DESCRIPTORS to value greater than 4"
+    else
+        echo "Set CONFIG_NFILE_DESCRIPTORS to value greater than 1"
+    fi
+    exit 1
+fi
+
+# If a console is enabled, then three more file descriptors are required
+# for stdin, stdout, and stderr
+
+if [ "X$devconsole" = "Xy" -a "$ndescriptors" -lt 5 ]; then
+    echo "Insufficient file descriptors have been allocated"
+    echo "Set CONFIG_NFILE_DESCRIPTORS to value greater than 4"
+fi
+
+# ROMFS support is required, of course
+
+if [ "X$romfs" != "Xy" ]; then
+    echo "ROMFS support is disabled in the NuttX configuration"
+    echo "Set CONFIG_FS_ROMFS=y to continue"
+    exit 0
+fi
+
+# The options in the default rcS.template also require FAT FS support
+
+if [ "X$fatfs" != "Xy" ]; then
+    echo "FAT FS support is disabled in the NuttX configuration"
+    echo "Set CONFIG_FS_FAT=y to continue"
+    exit 0
+fi
+
+# Verify that genromfs has been installed
+
+genromfs -h 1>/dev/null 2>&1 || { \
+  echo "Host executable genromfs not available in PATH"; \
+  echo "You may need to download in from http://romfs.sourceforge.net/"; \
+  exit 1; \
+}
+
+# Supply defaults for all un-defined ROMFS settings
+
+if [ -z "$romfsmpt" ]; then
+    romfsmpt="/etc"
+fi
+if [ -z "$initscript" ]; then
+    initscript="init.d/rcS"
+fi
+if [ -z "$romfsdevno" ]; then
+    romfsdevno=0
+fi
+if [ -z "$romfssectsize" ]; then
+    romfssectsize=64
+fi
+
+# Supply defaults for all un-defined FAT FS settings
+
+if [ -z "$fatdevno" ]; then
+    fatdevno=1
+fi
+if [ -z "$fatsectsize" ]; then
+    fatsectsize=512
+fi
+if [ -z "$fatnsectors" ]; then
+    fatnsectors=1024
+fi
+if [ -z "$fatmpt" ]; then
+   fatmpt="/tmp"
+fi
+
+# Verify the mountpoint.  Verify that it is an absolute path but not /, /dev,
+# /., /./*, /.., or /../*
+
+if [ ${romfsmpt:0:1} != "\"" ]; then
+   echo "CONFIG_NSH_ROMFSMOUNTPT must be a string"
+   echo "Change it so that it is enclosed in quotes."
+   exit 1
+fi
+
+uromfsmpt=`echo $romfsmpt | sed -e "s/\"//g"`
+
+if [ ${uromfsmpt:0:1} != "/" ]; then
+   echo "CONFIG_NSH_ROMFSMOUNTPT must be an absolute path in the target FS"
+   echo "Change it so that it begins with the character '/'.  Eg. /etc"
+   exit 1
+fi
+
+tmpdir=$uromfsmpt
+while [ ${tmpdir:0:1} == "/" ]; do
+    tmpdir=${tmpdir:1}
+done
+
+if [ -z "$tmpdir" -o "X$tmpdir" = "Xdev" -o "X$tmpdir" = "." -o \
+     ${tmpdir:0:2} = "./" -o "X$tmpdir" = ".." -o ${tmpdir:0:3} = "../" ]; then
+   echo "Invalid CONFIG_NSH_ROMFSMOUNTPT selection."
+   exit 1
+fi
+
+# Verify that the path to the init file is a relative path and not ., ./*, .., or ../*
+
+if [ ${initscript:0:1} != "\"" ]; then
+   echo "CONFIG_NSH_INITSCRIPT must be a string"
+   echo "Change it so that it is enclosed in quotes."
+   exit 1
+fi
+
+uinitscript=`echo $initscript | sed -e "s/\"//g"`
+
+if [ ${uinitscript:0:1} == "/" ]; then
+   echo "CONFIG_NSH_INITSCRIPT must be an relative path in under $romfsmpt"
+   echo "Change it so that it begins with the character '/'.  Eg. init.d/rcS. "
+   exit 1
+fi
+
+if [ "X$uinitscript" = "."  -o ${uinitscript:0:2} = "./" -o \
+     "X$uinitscript" = ".." -o ${uinitscript:0:3} = "../" ]; then
+   echo "Invalid CONFIG_NSH_INITSCRIPT selection.  Must not begin with . or .."
+   exit 1
+fi
+
+# Create a working directory
+
+rm -rf $workingdir || { echo "Failed to remove the old $workingdir"; exit 1; }
+mkdir -p $workingdir || { echo "Failed to created the new $workingdir"; exit 1; }
+
+# Create the rcS file from the rcS.template
+
+if [ ! -r $rcstemplate ]; then
+    echo "$rcstemplete does not exist"
+    rmdir $workingdir
+    exit 1
+fi
+
+cat $rcstemplate | \
+    sed -e "s,XXXMKRDMINORXXX,$fatdevno,g" | \
+    sed -e "s,XXMKRDSECTORSIZEXXX,$fatsectsize,g" | \
+    sed -e "s,XXMKRDBLOCKSXXX,$fatnsectors,g" | \
+    sed -e "s,XXXRDMOUNTPOUNTXXX,$fatmpt,g" >$rcsfile
+
+# And install it at the specified relative location
+
+install -D --mode=0755 $rcsfile $workingdir/$uinitscript || \
+    { echo "Failed to install $rcsfile at $workingdir/$uinitscript"; rm -f $rcsfile; exit 1; }
+rm -f $rcsfile
+
+# Now we are ready to make the ROMFS image
+
+genromfs -f $romfsimg -d $workingdir -V "NSHInitVol" || { echo "genromfs failed" ; exit 1 ; }
+rm -rf $workingdir || { echo "Failed to remove the old $workingdir"; exit 1; }
+
+# And, finally, create the header file
+
+xxd -i $romfsimg >$headerfile || { echo "xxd of $< failed" ; rm -f $romfsimg; exit 1 ; }
+rm -f $romfsimg
diff --git a/nuttx/tools/mksyscall.c b/nuttx/tools/mksyscall.c
new file mode 100644
index 000000000..a8f2cf99b
--- /dev/null
+++ b/nuttx/tools/mksyscall.c
@@ -0,0 +1,831 @@
+/****************************************************************************
+ * tools/mksyscall.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <errno.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define LINESIZE      (PATH_MAX > 256 ? PATH_MAX : 256)
+
+#define MAX_FIELDS    16
+#define MAX_PARMSIZE  128
+#define NAME_INDEX    0
+#define HEADER_INDEX  1
+#define COND_INDEX    2
+#define RETTYPE_INDEX 3
+#define PARM1_INDEX   4
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static bool g_debug;
+static bool g_inline;
+static char g_line[LINESIZE+1];
+static char g_parm[MAX_FIELDS][MAX_PARMSIZE];
+static FILE *g_stubstream;
+static int g_lineno;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static char *skip_space(char *ptr)
+{
+  while (*ptr && isspace(*ptr)) ptr++;
+  return ptr;
+}
+
+static char *read_line(FILE *stream)
+{
+  char *ptr;
+
+  for (;;)
+    {
+      g_line[LINESIZE] = '\0';
+      if (!fgets(g_line, LINESIZE, stream))
+        {
+          return NULL;
+        }
+      else
+        {
+          g_lineno++;
+          if (g_debug)
+            {
+              printf("Line: %s\n", g_line);
+            }
+
+          ptr = skip_space(g_line);
+          if (*ptr && *ptr != '#' && *ptr != '\n')
+            {
+              return ptr;
+            }
+        }
+    }
+}
+
+static char *copy_parm(char *src, char *dest)
+{
+  char *start = src;
+  int i;
+
+  for (i = 0; i < MAX_PARMSIZE; i++)
+    {
+      if (*src == '"')
+        {
+          *dest = '\0';
+          return src;
+        }
+      else if (*src == '\n' || *src == '\0')
+        {
+          fprintf(stderr, "%d: Unexpected end of line: \"%s\"\n", g_lineno, start);
+          exit(4);
+        }
+      else
+        {
+          *dest++ = *src++;
+        }
+    }
+
+  fprintf(stderr, "%d: Parameter too long: \"%s\"\n", g_lineno, start);
+  exit(3);
+}
+
+static char *find_parm(char *ptr)
+{
+  char *start = ptr;
+
+  if (*ptr != '"')
+    {
+      fprintf(stderr, "%d: I'm confused: \"%s\"\n", g_lineno, start);
+      exit(5);
+    }
+  ptr++;
+
+  ptr = skip_space(ptr);
+  if (*ptr == '\n' || *ptr == '\0')
+    {
+      return NULL;
+    }
+  else if (*ptr != ',')
+    {
+      fprintf(stderr, "%d: Expected ',': \"%s\"\n", g_lineno, start);
+      exit(6);
+    }
+  ptr++;
+
+  ptr = skip_space(ptr);
+  if (*ptr != '"')
+    {
+      fprintf(stderr, "%d: Expected \": \"%s\"\n", g_lineno, start);
+      exit(7);
+    }
+  ptr++;
+
+  return ptr;
+}
+
+static int parse_csvline(char *ptr)
+{
+  int nparms;
+  int i;
+
+  /* Format "arg1","arg2","arg3",... Spaces will be tolerated outside of the
+   * quotes.  Any initial spaces have already been skipped so the first thing
+   * should be '"'.
+   */
+
+  if (*ptr != '"')
+    {
+      fprintf(stderr, "%d: Bad line: \"%s\"\n", g_lineno, g_line);
+      exit(2);
+    }
+
+  ptr++;
+  nparms = 0;
+
+  do
+    {
+      ptr = copy_parm(ptr, &g_parm[nparms][0]);
+      nparms++;
+      ptr = find_parm(ptr);
+    }
+  while (ptr);
+
+  if (g_debug)
+    {
+      printf("Parameters: %d\n", nparms);
+      for (i = 0; i < nparms; i++)
+        {
+          printf("  Parm%d: \"%s\"\n", i+1, g_parm[i]);
+        }
+    }
+  return nparms;
+}
+
+static bool is_vararg(const char *type, int index, int nparms)
+{
+  if (strcmp(type,"...") == 0)
+    {
+      if (index != (nparms-1))
+        {
+          fprintf(stderr, "%d: ... is not the last in the argument list\n", g_lineno);
+          exit(11);
+        }
+      else if (nparms < 2)
+        {
+          fprintf(stderr, "%d: Need one parameter before ...\n", g_lineno);
+          exit(14);
+        }
+      return true;
+    }
+  return false;
+}
+
+static bool is_union(const char *type)
+{
+  return (strncmp(type,"union", 5) == 0);
+}
+
+static const char *check_funcptr(const char *type)
+{
+  const char *str = strstr(type,"(*)");
+  if (str)
+    {
+      return str + 2;
+    }
+  return NULL;
+}
+
+static const char *check_array(const char *type)
+{
+  const char *str = strchr(type, '[');
+  if (str)
+    {
+      return str;
+    }
+  return NULL;
+}
+
+static void print_formalparm(FILE *stream, const char *argtype, int parmno)
+{
+  const char *part2;
+  int len;
+
+  /* Function pointers and array formal parameter types are a little more work */
+
+  if ((part2 = check_funcptr(argtype)) != NULL || (part2 = check_array(argtype)) != NULL)
+    {
+      len = part2 - argtype;
+      (void)fwrite(argtype, 1, len, stream);
+      fprintf(stream, "parm%d%s", parmno, part2);
+    }
+  else
+    {
+      fprintf(stream, "%s parm%d", argtype, parmno);
+    }
+}
+
+static void get_formalparmtype(const char *arg, char *formal)
+{
+  /* The formal parm type is a pointer to everything up to the first'|' (or
+   * the end of the string if there is no '|' in the type description).
+   */
+
+  while (*arg != '|' && *arg != '\0')
+    {
+      *formal++ = *arg++;
+    }
+  *formal   = '\0';
+}
+
+static void get_actualparmtype(const char *arg, char *actual)
+{
+  const char *pstart = strchr(arg,'|');
+  if (pstart)
+    {
+      /* The actual parameter type starts after the '|' */
+
+      pstart++;
+    }
+  else
+    {
+      /* The actual parameter is the same as the formal parameter
+       * at starts at the beginning of the type string.
+       */
+
+      pstart = arg;
+    }
+
+  /* The actual parm type is a pointer to everything up to the next '|' (or
+   * the end of the string if there is no '|' in the type description).
+   */
+
+  while (*pstart != '|' && *pstart != '\0')
+    {
+      *actual++ = *pstart++;
+    }
+  *actual   = '\0';
+}
+
+static void get_fieldname(const char *arg, char *fieldname)
+{
+  char *pactual = strchr(arg,'|');
+  char *pstart;
+
+  if (pactual)
+    {
+      /* The actual parameter type starts after the '|' */
+
+      pactual++;
+      pstart = strchr(pactual,'|');
+      if (pstart)
+        {
+          /* The fieldname is everything past the second '|' to the end of the string */
+
+          pstart++;
+          strncpy(fieldname, pstart, MAX_PARMSIZE);
+          return;
+        }
+    }
+
+  fprintf(stderr, "%d: Missing union fieldname: %s\n", g_lineno, arg);
+  exit(15);
+}
+
+static FILE *open_proxy(void)
+{
+  char filename[MAX_PARMSIZE+10];
+  FILE *stream;
+
+  snprintf(filename, MAX_PARMSIZE+9, "PROXY_%s.c", g_parm[NAME_INDEX]);
+  filename[MAX_PARMSIZE+9] = '\0';
+
+  stream = fopen(filename, "w");
+  if (stream == NULL)
+    {
+      fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno));
+      exit(10);
+    }
+  return stream;
+}
+
+static void generate_proxy(int nparms)
+{
+  FILE *stream = open_proxy();
+  char formal[MAX_PARMSIZE];
+  char fieldname[MAX_PARMSIZE];
+  bool bvarargs = false;
+  int nformal;
+  int nactual;
+  int i;
+
+  /* Generate "up-front" information, include correct header files */
+
+  fprintf(stream, "/* Auto-generated %s proxy file -- do not edit */\n\n", g_parm[NAME_INDEX]);
+  fprintf(stream, "#include <nuttx/config.h>\n");
+
+  /* Does this function have a variable number of parameters?  If so then the
+   * final parameter type will be encoded as "..."
+   */
+
+  if (is_vararg(g_parm[PARM1_INDEX+nparms-1], nparms-1, nparms))
+    {
+      nformal = nparms-1;
+      bvarargs = true;
+      fprintf(stream, "#include <stdarg.h>\n");
+    }
+  else
+    {
+      nformal = nparms;
+    }
+
+  fprintf(stream, "#include <%s>\n", g_parm[HEADER_INDEX]);
+  fprintf(stream, "#include <syscall.h>\n\n");
+
+  if (g_parm[COND_INDEX][0] != '\0')
+    {
+      fprintf(stream, "#if %s\n\n", g_parm[COND_INDEX]);
+    }
+
+  /* Generate the function definition that matches standard function prototype */
+
+  fprintf(stream, "%s %s(", g_parm[RETTYPE_INDEX], g_parm[NAME_INDEX]);
+
+  /* Generate the formal parameter list */
+
+  if (nformal <= 0)
+    {
+      fprintf(stream, "void");
+    }
+  else
+    {
+      for (i = 0; i < nformal; i++)
+        {
+          /* The formal and actual parameter types may be encoded.. extra the
+           * formal parameter type.
+           */
+
+          get_formalparmtype(g_parm[PARM1_INDEX+i], formal);
+
+          /* Arguments after the first must be separated from the preceding
+           * parameter with a comma.
+           */
+
+          if (i > 0)
+            {
+              fprintf(stream, ", ");
+            }
+          print_formalparm(stream, formal, i+1);
+        }
+    }
+
+  /* Handle the end of the formal parameter list */
+
+  if (bvarargs)
+    {
+       fprintf(stream, ", ...)\n{\n");
+
+       /* Get parm variables .. some from the parameter list and others from
+        * the varargs.
+        */
+
+       if (nparms < 7)
+         {
+           fprintf(stream, "  va_list ap;\n");
+           for (i = nparms; i < 7; i++)
+             {
+               fprintf(stream, "  uintptr_t parm%d;\n", i);
+             }
+
+           fprintf(stream, "\n  va_start(ap, parm%d);\n", nparms-1);
+           for (i = nparms; i < 7; i++)
+             {
+               fprintf(stream, "  parm%d = va_arg(ap, uintptr_t);\n", i);
+             }
+           fprintf(stream, "  va_end(ap);\n\n");
+         }
+    }
+  else
+    {
+      fprintf(stream, ")\n{\n");
+    }
+
+  /* Generate the system call.  Functions that do not return or return void
+   * are special cases.
+   */
+
+  nactual = bvarargs ? 6 : nparms;
+  if (strcmp(g_parm[RETTYPE_INDEX], "void") == 0)
+    {
+      fprintf(stream, "  (void)sys_call%d(", nactual);
+    }
+  else
+    {
+      fprintf(stream, "  return (%s)sys_call%d(", g_parm[RETTYPE_INDEX], nactual);
+    }
+
+  /* Create the parameter list with the matching types.  The first parameter
+   * is always the syscall number.
+   */
+
+  fprintf(stream, "(unsigned int)SYS_%s", g_parm[NAME_INDEX]);
+
+  for (i = 0; i < nactual; i++)
+    {
+      /* Is the parameter a union member */
+
+      if (i < nparms && is_union(g_parm[PARM1_INDEX+i]))
+        {
+          /* Then we will have to pick a field name that can be cast to a
+           * uintptr_t.  There probably should be some error handling here
+           * to catch the case where the fieldname was not supplied.
+           */
+
+          get_fieldname(g_parm[PARM1_INDEX+i], fieldname);
+          fprintf(stream, ", (uintptr_t)parm%d.%s", i+1, fieldname);          
+        }
+      else
+        {
+          fprintf(stream, ", (uintptr_t)parm%d", i+1);
+        }
+    }
+
+  /* Handle the tail end of the function. */
+
+  fprintf(stream, ");\n}\n\n");
+  if (g_parm[COND_INDEX][0] != '\0')
+    {
+      fprintf(stream, "#endif /* %s */\n", g_parm[COND_INDEX]);
+    }
+
+  fclose(stream);
+}
+
+static FILE *open_stub(void)
+{
+  if (g_inline)
+    {
+      if (!g_stubstream)
+        {
+          g_stubstream = fopen("STUB.h", "w");
+          if (g_stubstream == NULL)
+            {
+              fprintf(stderr, "Failed to open STUB.h: %s\n", strerror(errno));
+              exit(9);
+            }
+          fprintf(g_stubstream, "/* Autogenerated STUB header file */\n\n");
+          fprintf(g_stubstream, "#ifndef __STUB_H\n");
+          fprintf(g_stubstream, "#define __STUB_H\n\n");
+        }
+
+      return g_stubstream;
+    }
+  else
+    {
+      char filename[MAX_PARMSIZE+8];
+      FILE *stream;
+
+      snprintf(filename, MAX_PARMSIZE+7, "STUB_%s.c", g_parm[NAME_INDEX]);
+      filename[MAX_PARMSIZE+7] = '\0';
+
+      stream = fopen(filename, "w");
+      if (stream == NULL)
+        {
+          fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno));
+          exit(9);
+        }
+      return stream;
+    }
+}
+
+static void stub_close(FILE *stream)
+{
+  if (!g_inline)
+    {
+      fclose(stream);
+    }
+}
+
+static void generate_stub(int nparms)
+{
+  FILE *stream = open_stub();
+  char formal[MAX_PARMSIZE];
+  char actual[MAX_PARMSIZE];
+  int i;
+  int j;
+
+  /* Generate "up-front" information, include correct header files */
+
+  fprintf(stream, "/* Auto-generated %s stub file -- do not edit */\n\n", g_parm[0]);
+  fprintf(stream, "#include <nuttx/config.h>\n");
+  fprintf(stream, "#include <stdint.h>\n");
+  fprintf(stream, "#include <%s>\n\n", g_parm[HEADER_INDEX]);
+
+  if (g_parm[COND_INDEX][0] != '\0')
+    {
+      fprintf(stream, "#if %s\n\n", g_parm[COND_INDEX]);
+    }
+
+  /* Generate the function definition that matches standard function prototype */
+
+  if (g_inline)
+    {
+      fprintf(stream, "static inline ");
+    }
+  fprintf(stream, "uintptr_t STUB_%s(", g_parm[NAME_INDEX]);
+
+  /* Generate the formal parameter list.  A function received no parameters is a special case. */
+
+  if (nparms <= 0)
+    {
+      fprintf(stream, "void");
+    }
+  else
+    {
+      for (i = 0; i < nparms; i++)
+        {
+          /* Treat the first argument in the list differently from the others..
+           * It does not need a comma before it.
+           */
+
+          if (i > 0)
+            {
+              /* Check for a variable number of arguments */
+
+              if (is_vararg(g_parm[PARM1_INDEX+i], i, nparms))
+                {
+                  /* Always receive six arguments in this case */
+
+                  for (j = i+1; j <= 6; j++)
+                    {
+                      fprintf(stream, ", uintptr_t parm%d", j);
+                    }
+                }
+              else
+                {
+                  fprintf(stream, ", uintptr_t parm%d", i+1);
+                }
+            }
+          else
+            {
+              fprintf(stream, "uintptr_t parm%d", i+1);
+            }
+        }
+    }
+  fprintf(stream, ")\n{\n");
+
+  /* Then call the proxied function.  Functions that have no return value are
+   * a special case.
+   */
+
+  if (strcmp(g_parm[RETTYPE_INDEX], "void") == 0)
+    {
+      fprintf(stream, "  %s(", g_parm[NAME_INDEX]);
+    }
+  else
+    {
+      fprintf(stream, "  return (uintptr_t)%s(", g_parm[NAME_INDEX]);
+    }
+
+  /* The pass all of the system call parameters, casting to the correct type
+   * as necessary.
+   */
+
+  for (i = 0; i < nparms; i++)
+    {
+      /* Get the formal type of the parameter, and get the type that we
+       * actually have to cast to.  For example for a formal type like 'int parm[]'
+       * we have to cast the actual parameter to 'int*'.  The worst is a union
+       * type like 'union sigval' where we have to cast to (union sigval)((FAR void *)parm)
+       * -- Yech.
+       */
+
+     get_formalparmtype(g_parm[PARM1_INDEX+i], formal);
+     get_actualparmtype(g_parm[PARM1_INDEX+i], actual);
+
+      /* Treat the first argument in the list differently from the others..
+       * It does not need a comma before it.
+       */
+
+      if (i > 0)
+        {
+          /* Check for a variable number of arguments */
+
+          if (is_vararg(actual, i, nparms))
+            {
+              /* Always pass six arguments */
+
+              for (j = i+1; j <=6; j++)
+                {
+                  fprintf(stream, ", parm%d", j);
+                }
+            }
+          else
+            {
+              if (is_union(formal))
+                {
+                  fprintf(stream, ", (%s)((%s)parm%d)", formal, actual, i+1);
+                }
+              else
+                {
+                  fprintf(stream, ", (%s)parm%d", actual, i+1);
+                }
+            }
+        }
+      else
+        {
+          if (is_union(formal))
+            {
+              fprintf(stream, "(%s)((%s)parm%d)", formal, actual, i+1);
+            }
+          else
+            {
+              fprintf(stream, "(%s)parm%d",actual, i+1);
+            }
+        }
+    }
+
+  /* Tail end of the function.  If the proxied function has no return
+   * value, just return zero (OK).
+   */
+
+  if (strcmp(g_parm[RETTYPE_INDEX], "void") == 0)
+    {
+      fprintf(stream, ");\n  return 0;\n}\n\n");
+    }
+  else
+    {
+      fprintf(stream, ");\n}\n\n");
+    }
+
+  if (g_parm[COND_INDEX][0] != '\0')
+    {
+      fprintf(stream, "#endif /* %s */\n", g_parm[COND_INDEX]);
+    }
+  stub_close(stream);
+}
+
+static void show_usage(const char *progname)
+{
+  fprintf(stderr, "USAGE: %s [-p|s|i] <CSV file>\n\n", progname);
+  fprintf(stderr, "Where:\n\n");
+  fprintf(stderr, "\t-p : Generate proxies\n");
+  fprintf(stderr, "\t-s : Generate stubs\n");
+  fprintf(stderr, "\t-i : Generate proxies as static inline functions\n");
+  exit(1);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv, char **envp)
+{
+  char *csvpath;
+  bool proxies = false;
+  FILE *stream;
+  char *ptr;
+  int ch;
+
+  /* Parse command line options */
+
+  g_debug = false;
+  g_inline = false;
+
+  while ((ch = getopt(argc, argv, ":dps")) > 0)
+    {
+      switch (ch)
+        {
+          case 'd' :
+            g_debug = true;
+            break;
+
+          case 'p' :
+            proxies = true;
+            break;
+
+          case 's' :
+            proxies = false;
+            break;
+
+          case 'i' :
+            g_inline = true;
+            break;
+
+          case '?' :
+            fprintf(stderr, "Unrecognized option: %c\n", optopt);
+            show_usage(argv[0]);
+
+          case ':' :
+            fprintf(stderr, "Missing option argument, option: %c\n", optopt);
+            show_usage(argv[0]);
+
+           break;
+            fprintf(stderr, "Unexpected option: %c\n", ch);
+            show_usage(argv[0]);
+        }
+    }
+
+  if (optind >= argc)
+    {
+       fprintf(stderr, "Missing <CSV file>\n");
+       show_usage(argv[0]);      
+    }
+
+  csvpath = argv[optind];
+  if (++optind < argc)
+    {
+       fprintf(stderr, "Unexpected garbage at the end of the line\n");
+       show_usage(argv[0]);      
+    }    
+
+  /* Open the CSV file */
+
+  stream= fopen(csvpath, "r");
+  if (!stream)
+    {
+      fprintf(stderr, "open %s failed: %s\n", csvpath, strerror(errno));
+      exit(3);
+    }
+
+  /* Process each line in the CVS file */
+
+  while ((ptr = read_line(stream)) != NULL)
+    {
+      /* Parse the line from the CVS file */
+
+      int nargs = parse_csvline(ptr);
+      if (nargs < PARM1_INDEX)
+        {
+          fprintf(stderr, "Only %d arguments found: %s\n", nargs, g_line);
+          exit(8);
+        }
+
+      if (proxies)
+        {
+          generate_proxy(nargs - PARM1_INDEX);
+        }
+      else
+        {
+          g_stubstream = NULL;
+          generate_stub(nargs - PARM1_INDEX);
+          if (g_stubstream != NULL)
+            {
+              fprintf(g_stubstream, "\n#endif /* __STUB_H */\n");
+              fclose(g_stubstream);
+            }
+        }
+    }
+
+  /* Close the CSV file */
+
+  fclose(stream);
+  return 0;
+}
diff --git a/nuttx/tools/mkversion.c b/nuttx/tools/mkversion.c
new file mode 100644
index 000000000..f2086d13a
--- /dev/null
+++ b/nuttx/tools/mkversion.c
@@ -0,0 +1,106 @@
+/****************************************************************************
+ * tools/mkversion.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "cfgparser.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define DEFCONFIG ".version"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+ static inline char *getfilepath(const char *name)
+{
+  snprintf(line, PATH_MAX, "%s/" DEFCONFIG, name);
+  line[PATH_MAX] = '\0';
+  return strdup(line);
+}
+
+static void show_usage(const char *progname)
+{
+  fprintf(stderr, "USAGE: %s <abs path to .version>\n", progname);
+  exit(1);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv, char **envp)
+{
+  char *filepath;
+  FILE *stream;
+
+  if (argc != 2)
+    {
+      fprintf(stderr, "Unexpected number of arguments\n");
+      show_usage(argv[0]);
+    }
+
+  filepath = getfilepath(argv[1]);
+  if (!filepath)
+    {
+      fprintf(stderr, "getfilepath failed\n");
+      exit(2);
+    }
+
+  stream= fopen(filepath, "r");
+  if (!stream)
+    {
+      fprintf(stderr, "open %s failed: %s\n", filepath, strerror(errno));
+      exit(3);
+    }
+
+  printf("/* version.h -- Autogenerated! Do not edit. */\n\n");
+  printf("#ifndef __INCLUDE_NUTTX_VERSION_H\n");
+  printf("#define __INCLUDE_NUTTX_VERSION_H\n\n");
+  parse_file(stream);
+  printf("\n#define CONFIG_VERSION ((CONFIG_VERSION_MAJOR << 8) | (CONFIG_VERSION_MINOR))\n\n");
+  printf("#endif /* __INCLUDE_NUTTX_VERSION_H */\n");
+  fclose(stream);
+  return 0;
+}
diff --git a/nuttx/tools/unlink.sh b/nuttx/tools/unlink.sh
new file mode 100755
index 000000000..47079f085
--- /dev/null
+++ b/nuttx/tools/unlink.sh
@@ -0,0 +1,70 @@
+#!/bin/bash
+############################################################################
+# tools/unlink.sh
+#
+#   Copyright (C) 2008 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.
+#
+############################################################################
+
+link=$1
+
+# Verify that arguments were provided
+
+if [ -z "${link}" ]; then
+	echo "Missing link argument"
+	exit 1
+fi
+
+# Check if something already exists at the link path
+
+if [ -e "${link}" ]; then
+
+	# Yes, is it a symbolic link?  If so, then remove it
+
+	if [ -h "${link}" ]; then
+		rm -f "${link}"
+	else
+
+		# If the path is a directory and contains the "fake link" mark, then
+		# treat it like a soft link (i.e., remove the directory)
+
+		if [ -d "${link}" -a -f "${link}/.fakelnk" ]; then
+			rm -rf "${link}"
+		else
+
+			# It is something else (like a file) or directory that does
+			# not contain the "fake link" mark
+
+			echo "${link} already exists but is not a symbolic link"
+			exit 1
+		fi
+	fi
+fi
\ No newline at end of file
diff --git a/nuttx/tools/version.sh b/nuttx/tools/version.sh
new file mode 100755
index 000000000..7cad7ee03
--- /dev/null
+++ b/nuttx/tools/version.sh
@@ -0,0 +1,135 @@
+#!/bin/bash
+# version.sh
+#
+#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+WD=`pwd`
+
+# Get command line parameters
+
+USAGE="USAGE: $0 [-d|-h] [-b build] -v <major.minor> <outfile-path>"
+ADVICE="Try '$0 -h' for more information"
+
+unset VERSION
+unset BUILD
+unset OUTFILE
+
+while [ ! -z "$1" ]; do 
+	case $1 in
+	-b )
+		shift
+		BUILD=$1
+		;;
+	-d )
+		set -x
+		;;
+	-v )
+		shift
+		VERSION=$1
+		;;
+	-h )
+		echo "$0 is a tool for generation of proper version files for the NuttX build"
+		echo ""
+		echo $USAGE
+		echo ""
+		echo "Where:"
+		echo "	-d"
+		echo "		Enable script debug"
+		echo "	-h"
+		echo "		show this help message and exit"
+		echo "	-v <major.minor>"
+		echo "		The NuttX version number expressed a major and minor number separated"
+		echo "		by a period"
+		echo " 	<outfile-path>"
+		echo "		The full path to the version file to be created"
+		exit 0
+		;;
+	* )
+		break;
+		;;
+	esac
+	shift
+done
+
+OUTFILE=$1
+
+# Make sure we know what is going on
+
+if [ -z ${VERSION} ] ; then
+	echo "Missing versioning information"
+	echo $USAGE
+	echo $ADVICE
+	exit 1
+fi
+
+if [ -z ${OUTFILE} ] ; then
+	echo "Missing path to the output file"
+	echo $USAGE
+	echo $ADVICE
+	exit 1
+fi
+
+# Get the major and minor version numbers
+
+MAJOR=`echo ${VERSION} | cut -d'.' -f1`
+if [ "X${MAJOR}" = "X${VERSION}" ]; then
+	echo "Missing minor version number"
+	echo $USAGE
+	echo $ADVICE
+	exit 2
+fi
+MINOR=`echo ${VERSION} | cut -d'.' -f2`
+
+# Get SVN information (if not provided on the command line)
+
+if [ -z "${BUILD}" ]; then
+	SVNINFO=`svn info 2>/dev/null | fgrep 'Revision:'`
+	if [ -z "${SVNINFO}" ]; then
+		echo "SVN version information is not available"
+		exit 3
+	fi
+	BUILD=`echo ${SVNINFO} | cut -d' ' -f2`
+	if [ -z "${BUILD}" ]; then
+		echo "SVN build information not found"
+		exit 4
+	fi
+fi
+
+# Write a version file into the NuttX directoy.  The syntax of file is such that it
+# may be sourced by a bash script or included by a Makefile.
+
+echo "#!/bin/bash" >${OUTFILE}
+echo "" >>${OUTFILE}
+echo "CONFIG_VERSION_STRING=\"${VERSION}\"" >>${OUTFILE}
+echo "CONFIG_VERSION_MAJOR=${MAJOR}" >>${OUTFILE}
+echo "CONFIG_VERSION_MINOR=${MINOR}" >>${OUTFILE}
+echo "CONFIG_VERSION_BUILD=${BUILD}" >>${OUTFILE}
diff --git a/nuttx/tools/winlink.sh b/nuttx/tools/winlink.sh
new file mode 100755
index 000000000..c081cee35
--- /dev/null
+++ b/nuttx/tools/winlink.sh
@@ -0,0 +1,102 @@
+#!/bin/bash
+############################################################################
+# tools/winlink.sh
+#
+#   Copyright (C) 2008 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.
+#
+############################################################################
+#
+# NuttX uses symbolic links to configure platform-specific directories into
+# the build system.  This works great except for when a Windows native
+# toolchain is used in a Cygwin environment.  In that case, symbolic
+# links do not work correctly when accessed from the Windows native toolchain;
+# rather, just look link files with the extension .lnk
+#
+# In this environment, the build system will work around this using this script
+# as a replacement for the 'ln' command.  This scrpt will simply copy the
+# directory into the expected positiion.
+#
+#set -x
+
+src=$1
+dest=$2
+
+# Verify that arguments were provided
+
+if [ -z "${src}" -o -z "${dest}" ]; then
+	echo "Missing src and/or dest arguments"
+	exit 1
+fi
+
+# Check if something already exists at the destination path replace it with
+# the new link (which might be different).  Note that we check for the
+# the link (-h) before we check for existence (-e) because a bad link will
+# report that it does not exist.
+
+if [ -h "${dest}" ]; then
+	rm -f "${dest}"
+else
+
+	# If the path exists and is a directory that contains the "fake link"
+	# mark, then treat it like a soft link (i.e., remove the directory)
+
+	if [ -d "${dest}" -a -f "${dest}/.fakelnk" ]; then
+		rm -rf "${dest}"
+	else
+
+		# Does anything exist at the destination path?
+
+		if [ -e "${dest}" ]; then
+
+			# It is something else (like a file) or directory that does
+			# not contain the "fake link" mark
+
+			echo "${dest} already exists but is not a symbolic link"
+			exit 1
+		fi
+	fi
+fi
+
+
+# Verify that a directory exists at the source path
+
+if [ ! -d "${src}" ]; then
+	echo "No directory at ${src}"
+	exit 1
+fi
+
+# Copy the directory
+
+cp -a "${src}" "${dest}" || \
+	{ echo "Failed to create link: $dest" ; rm -rf ${dest} ; exit 1 ; }
+touch "${dest}/.fakelnk" || \
+	{ echo "Failed to touch ${dest}/.fakelnk" ; rm -rf ${dest} ; exit 1 ; }
+
diff --git a/nuttx/tools/zipme.sh b/nuttx/tools/zipme.sh
new file mode 100755
index 000000000..a10beaaab
--- /dev/null
+++ b/nuttx/tools/zipme.sh
@@ -0,0 +1,178 @@
+#!/bin/bash
+# zipme.sh
+#
+#   Copyright (C) 2007-2011 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+#set -x
+
+WD=`pwd`
+VERSION=$1
+
+TAR="tar cvf"
+ZIP=gzip
+
+# Make sure we know what is going on
+
+if [ -z ${VERSION} ] ; then
+   echo "You must supply a version like xx.yy as a parameter"
+   exit 1;
+fi
+
+# Find the directory we were executed from and were we expect to
+# see the directories to tar up
+
+MYNAME=`basename $0`
+
+if [ -x ${WD}/${MYNAME} ] ; then
+   TRUNKDIR="${WD}/../.."
+else
+   if [ -x ${WD}/tools/${MYNAME} ] ; then
+     TRUNKDIR="${WD}/.."
+   else
+     if [ -x ${WD}/nuttx-${VERSION}/tools/${MYNAME} ] ; then
+       TRUNKDIR="${WD}"
+     else
+       echo "You must cd into the NUTTX directory to execute this script."
+       exit 1
+     fi
+   fi
+fi
+
+# Get the NuttX directory names and the path to the parent directory
+
+NUTTX=${TRUNKDIR}/nuttx-${VERSION}
+APPDIR=${TRUNKDIR}/apps-${VERSION}
+
+# Make sure that the versioned directory exists
+
+if [ ! -d ${TRUNKDIR} ]; then
+   echo "Directory ${TRUNKDIR} does not exist"
+   exit 1
+fi
+
+cd ${TRUNKDIR} || \
+   { echo "Failed to cd to ${TRUNKDIR}" ; exit 1 ; }
+
+if [ ! -d nuttx-${VERSION} ] ; then
+   echo "Directory ${TRUNKDIR}/nuttx-${VERSION} does not exist!"
+   exit 1
+fi
+
+if [ ! -d apps-${VERSION} ] ; then
+   echo "Directory ${TRUNKDIR}/apps-${VERSION} does not exist!"
+   exit 1
+fi
+
+# Create the versioned tarball names
+
+NUTTX_TARNAME=nuttx-${VERSION}.tar
+APPS_TARNAME=apps-${VERSION}.tar
+NUTTX_ZIPNAME=${NUTTX_TARNAME}.gz
+APPS_ZIPNAME=${APPS_TARNAME}.gz
+
+# Prepare the nuttx directory -- Remove editor garbage
+
+find ${TRUNKDIR} -name '*~' -exec rm -f '{}' ';' || \
+      { echo "Removal of emacs garbage failed!" ; exit 1 ; }
+find ${TRUNKDIR} -name '*.swp' -exec rm -f '{}' ';' || \
+      { echo "Removal of VI garbage failed!" ; exit 1 ; }
+
+# Make sure that versioned copies of the certain files are in place
+
+cd ${NUTTX}/Documentation || \
+   { echo "Failed to cd to ${NUTTX}/Documentation" ; exit 1 ; }
+
+cp -f ../TODO TODO.txt
+cp -f ../ChangeLog ChangeLog.txt
+
+# Write a version file into the NuttX directoy.  The syntax of file is such that it
+# may be sourced by a bash script or included by a Makefile.
+
+VERSIONSH=${NUTTX}/tools/version.sh
+if [ ! -x "${VERSIONSH}" ]; then
+	echo "No executable script was found at: ${VERSIONSH}"
+	exit 1
+fi
+${VERSIONSH} -v ${VERSION} ${NUTTX}/.version || \
+	{ echo "${VERSIONSH} failed"; cat ${NUTTX}/.version; exit 1; }
+chmod 755 ${NUTTX}/.version
+
+# Perform a full clean for the distribution
+
+cd ${TRUNKDIR} || \
+   { echo "Failed to cd to ${TRUNKDIR}" ; exit 1 ; }
+
+make -C ${NUTTX} distclean
+
+# Remove any previous tarballs
+
+if [ -f ${NUTTX_TARNAME} ] ; then
+   echo "Removing ${TRUNKDIR}/${NUTTX_TARNAME}"
+   rm -f ${NUTTX_TARNAME} || \
+      { echo "rm ${NUTTX_TARNAME} failed!" ; exit 1 ; }
+fi
+
+if [ -f ${NUTTX_ZIPNAME} ] ; then
+   echo "Removing ${TRUNKDIR}/${NUTTX_ZIPNAME}"
+   rm -f ${NUTTX_ZIPNAME} || \
+      { echo "rm ${NUTTX_ZIPNAME} failed!" ; exit 1 ; }
+fi
+
+if [ -f ${APPS_TARNAME} ] ; then
+   echo "Removing ${TRUNKDIR}/${APPS_TARNAME}"
+   rm -f ${APPS_TARNAME} || \
+      { echo "rm ${APPS_TARNAME} failed!" ; exit 1 ; }
+fi
+
+if [ -f ${APPS_ZIPNAME} ] ; then
+   echo "Removing ${TRUNKDIR}/${APPS_ZIPNAME}"
+   rm -f ${APPS_ZIPNAME} || \
+      { echo "rm ${APPS_ZIPNAME} failed!" ; exit 1 ; }
+fi
+
+# Then tar and zip-up the directories
+
+cd ${TRUNKDIR} || \
+   { echo "Failed to cd to ${TRUNKDIR}" ; exit 1 ; }
+
+${TAR} ${NUTTX_TARNAME} nuttx-${VERSION} || \
+      { echo "tar of ${NUTTX_TARNAME} failed!" ; exit 1 ; }
+${ZIP} ${NUTTX_TARNAME} || \
+      { echo "zip of ${NUTTX_TARNAME} failed!" ; exit 1 ; }
+
+${TAR} ${APPS_TARNAME} apps-${VERSION} || \
+      { echo "tar of ${APPS_TARNAME} failed!" ; exit 1 ; }
+${ZIP} ${APPS_TARNAME} || \
+      { echo "zip of ${APPS_TARNAME} failed!" ; exit 1 ; }
+
+cd ${NUTTX}
+