Add support for Freedom KL26Z board. From Derek B. NoonBurg

24 files changed, 4112 insertions, 4 deletions

diff --git a/nuttx/Documentation/README.html b/nuttx/Documentation/README.html
index ec1f51802..37aa984d0 100644
--- a/nuttx/Documentation/README.html
+++ b/nuttx/Documentation/README.html
@@ -102,6 +102,8 @@
  |   |   |   `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/galileo/README.txt"><b><i>README.txt</i></b></a>
  |   |   |- freedom-kl25z/
  |   |   |   `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/freedom-kl25z/README.txt"><b><i>README.txt</i></b></a>
+ |   |   |- freedom-kl26z/
+ |   |   |   `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/freedom-kl26z/README.txt"><b><i>README.txt</i></b></a>
  |   |   |- hymini-stm32v/
  |   |   |   |- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/hymini-stm32v/RIDE/README.txt">RIDE/README.txt</a>
  |   |   |   `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/hymini-stm32v/README.txt"><b><i>README.txt</i></b></a>
diff --git a/nuttx/README.txt b/nuttx/README.txt
index ff1bcfa45..bd41014f7 100644
--- a/nuttx/README.txt
+++ b/nuttx/README.txt
@@ -1154,9 +1154,11 @@ nuttx
  |   |   |- ostest/README.txt
  |   |   |- poll/README.txt
  |   |   `- README.txt
- |   |-  fire-stm32v2/
+ |   |- fire-stm32v2/
  |   |   `- README.txt
- |   |-  freedom-kl25z/
+ |   |- freedom-kl25z/
+ |   |   `- README.txt
+ |   |- freedom-kl26z/
  |   |   `- README.txt
  |   |- galileo/
  |   |   `- README.txt
diff --git a/nuttx/configs/Kconfig b/nuttx/configs/Kconfig
index dddbabfec..9bbe76619 100644
--- a/nuttx/configs/Kconfig
+++ b/nuttx/configs/Kconfig
@@ -202,6 +202,14 @@ config ARCH_BOARD_FREEDOM_KL25Z
 		This is the configuration for the Freescale Freedom KL25Z board.  This
 		board has the K25Z120LE3AN chip with a built-in SDA debugger.
 
+config ARCH_BOARD_FREEDOM_KL26Z
+	bool "Freescale Freedom KL26Z"
+	depends on ARCH_CHIP_MKL26Z128
+	select ARCH_HAVE_LEDS
+	---help---
+		This is the configuration for the Freescale Freedom KL26Z board.  This
+		board has the K26Z128VLH4 chip with a built-in SDA debugger.
+
 config ARCH_BOARD_HYMINI_STM32V
 	bool "HY-Mini STM32v board"
 	depends on ARCH_CHIP_STM32F103VC
@@ -1059,6 +1067,7 @@ config ARCH_BOARD
 	default "ez80f910200zco"           if ARCH_BOARD_EZ80F910200ZCO
 	default "fire-stm32v2"             if ARCH_BOARD_FIRE_STM32
 	default "freedom-kl25z"            if ARCH_BOARD_FREEDOM_KL25Z
+	default "freedom-kl26z"            if ARCH_BOARD_FREEDOM_KL26Z
 	default "hymini-stm32v"            if ARCH_BOARD_HYMINI_STM32V
 	default "kwikstik-k40"             if ARCH_BOARD_KWIKSTIK_K40
 	default "lincoln60"                if ARCH_BOARD_LINCOLN60
@@ -1250,6 +1259,12 @@ endif
 if ARCH_BOARD_FIRE_STM32
 source "configs/fire-stm32v2/Kconfig"
 endif
+if ARCH_BOARD_FREEDOM_KL25Z
+source "configs/freedom-kl25z/Kconfig"
+endif
+if ARCH_BOARD_FREEDOM_KL26Z
+source "configs/freedom-kl26z/Kconfig"
+endif
 if ARCH_BOARD_HYMINI_STM32V
 source "configs/hymini-stm32v/Kconfig"
 endif
diff --git a/nuttx/configs/README.txt b/nuttx/configs/README.txt
index c797e1c96..c762060f2 100644
--- a/nuttx/configs/README.txt
+++ b/nuttx/configs/README.txt
@@ -248,6 +248,14 @@ configs/fire-stm32v2
   STM32F103VET6 chip.  See http://firestm32.taobao.com .  Version 2 and 3 of
   the boards are supported but only version 2 has been tested.
 
+configs/freedom-kl25z
+configs/freedom-kl26z
+  These configurations are for the Freescale Freedom KL25Z and very similar
+  KL26Z board.  The Freedom-KL25Z features the K25Z120LE3AN chip; the
+  Freedom-KL26Z has the K26Z128VLH4 chip.  These are separate configurations
+  because of minor differences in the on-board logic.  Both include a
+  built-in SDA debugger.
+
 configs/hymini-stm32v
   A configuration for the HY-Mini STM32v board.  This board is based on the
   STM32F103VCT chip.
diff --git a/nuttx/configs/freedom-kl25z/include/board.h b/nuttx/configs/freedom-kl25z/include/board.h
index 7f2c4c5bb..51ac9864b 100644
--- a/nuttx/configs/freedom-kl25z/include/board.h
+++ b/nuttx/configs/freedom-kl25z/include/board.h
@@ -150,8 +150,8 @@
 
 /* TPM2 Channels */
 
-#define GPIO_TPM1_CH0OUT PIN_TPM2_CH0_1
-#define GPIO_TPM1_CH1OUT PIN_TPM2_CH1_1
+#define GPIO_TPM2_CH0OUT PIN_TPM2_CH0_1
+#define GPIO_TPM2_CH1OUT PIN_TPM2_CH1_1
 
 /* LED definitions ******************************************************************/
 /* The Freedom KL25Z has a single RGB LED driven by the KL25Z as follows:
diff --git a/nuttx/configs/freedom-kl26z/Kconfig b/nuttx/configs/freedom-kl26z/Kconfig
new file mode 100644
index 000000000..ce1bd6f28
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/Kconfig
@@ -0,0 +1,7 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+if ARCH_BOARD_FREEDOM_KL26Z
+endif
diff --git a/nuttx/configs/freedom-kl26z/README.txt b/nuttx/configs/freedom-kl26z/README.txt
new file mode 100644
index 000000000..59c478ca7
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/README.txt
@@ -0,0 +1,358 @@
+README.txt
+==========
+
+  This is the README file for the port of NuttX to the Freescale Freedom KL26Z
+  board.  This board has the MKL26Z128 chip with a built-in SDA debugger.
+
+Contents
+========
+
+  - Development Environment
+  - GNU Toolchain Options
+  - NuttX Buildroot Toolchain
+  - LEDs
+  - Serial Console
+  - mbed
+  - Freedom KL26Z-specific Configuration Options
+  - Configurations
+
+Development Environment
+=======================
+
+  Either Linux or Cygwin under Windows can be used for the development environment.
+  The source has been built only using the GNU toolchain (see below).  Other
+  toolchains will likely cause problems.
+
+GNU Toolchain Options
+=====================
+
+  As of this writing, all testing has been performed using the NuttX buildroot
+  toolchain described below.  I have also verified the build using the
+  CodeSourcery GCC toolchain for windows.  Most any contemporary EABI GCC
+  toolchain should work will a little tinkering.
+
+NuttX Buildroot Toolchain
+=========================
+
+  A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
+  be modified to point to the correct path to the Cortex-M0 GCC toolchain (if
+  different from the default in your PATH variable).
+
+  If you have no Cortex-M0 toolchain, one can be downloaded from the NuttX
+  SourceForge download site (https://sourceforge.net/projects/nuttx/files/buildroot/).
+  This GNU toolchain builds and executes in the Linux or Cygwin environment.
+
+  1. You must have already configured Nuttx in <some-dir>/nuttx.
+
+     cd tools
+     ./configure.sh freedom-kl26z/<sub-dir>
+
+  2. Download the latest buildroot package into <some-dir>
+
+  3. unpack the buildroot tarball.  The resulting directory may
+     have versioning information on it like buildroot-x.y.z.  If so,
+     rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.
+
+  4. cd <some-dir>/buildroot
+
+  5. cp configs/cortexm0-eabi-defconfig-4.6.3 .config
+
+  6. make oldconfig
+
+  7. make
+
+  8. Edit setenv.h, if necessary, so that the PATH variable includes
+     the path to the newly built binaries.
+
+  See the file configs/README.txt in the buildroot source tree.  That has more
+  details PLUS some special instructions that you will need to follow if you are
+  building a Cortex-M0 toolchain for Cygwin under Windows.
+
+LEDs
+====
+
+  The Freedom KL26Z has a single RGB LED driven by the KL26Z as follows:
+
+    ------------- --------
+    RGB LED       KL26Z128
+    ------------- --------
+    Red Cathode   PTE29
+    Green Cathode PTE31
+    Blue Cathode  PTD5
+
+   NOTE: PTD5 is also connected to the I/O header on J2 pin 12 (also known as D13).
+
+  If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board the
+  Freedom KL26Z.  The following definitions describe how NuttX controls the LEDs:
+
+    SYMBOL                Meaning                 LED state
+                                                  Initially all LED is OFF
+    -------------------  -----------------------  --------------------------
+    LED_STARTED          NuttX has been started   R=OFF G=OFF B=OFF
+    LED_HEAPALLOCATE     Heap has been allocated  (no change)
+    LED_IRQSENABLED      Interrupts enabled       (no change)
+    LED_STACKCREATED     Idle stack created       R=OFF G=OFF B=ON
+    LED_INIRQ            In an interrupt          (no change)
+    LED_SIGNAL           In a signal handler      (no change)
+    LED_ASSERTION        An assertion failed      (no change)
+    LED_PANIC            The system has crashed   R=FLASHING G=OFF B=OFF
+    LED_IDLE             K26Z1XX is in sleep mode (Optional, not used)
+
+Serial Console
+==============
+
+  As with most NuttX configurations, the Freedom KL26Z configurations
+  depend on having a serial console to interact with the software.  The
+  Freedom KL26Z, however, has no on-board RS-232 drivers so will be
+  necessary to connect the Freedom KL26Z UART pins to an external
+  RS-232 driver board or TTL-to-Serial USB adaptor.
+
+  By default UART0 is used as the serial console on this boards.  The UART0
+  is configured to work with the OpenSDA USB CDC/ACM port:
+
+    ------ ------------------------------- -----------------------------
+    PIN    PIN FUNCTIONS                   BOARD SIGNALS
+    ------ ------------------------------- -----------------------------
+    Pin 27 PTA1/TSI0_CH2/UART0_RX/FTM2_CH0 UART1_RX_TGTMCU and D0 (PTA1)
+    Pin 28 PTA2/TSI0_CH3/UART0_TX/FTM2_CH1 UART1_TX_TGTMCU and D1 (PTA2)
+
+  But the UART0 Tx/Rx signals are also available on J1:
+
+    ---------------- ---------
+    UART0 SIGNAL     J1 pin
+    ---------------- ---------
+    UART0_RX (PTA1)  J1, pin 2
+    UART0_TX (PTA2)  J1, pin 4
+
+  Ground is available on J2 pin 14.  3.3V is available on J3 and J4.
+
+Freedom KL26Z-specific Configuration Options
+============================================
+
+    CONFIG_ARCH - Identifies the arch/ subdirectory.  This should
+       be set to:
+
+       CONFIG_ARCH=arm
+
+    CONFIG_ARCH_family - For use in C code:
+
+       CONFIG_ARCH_ARM=y
+
+    CONFIG_ARCH_architecture - For use in C code:
+
+       CONFIG_ARCH_CORTEXM0=y
+
+    CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+
+       CONFIG_ARCH_CHIP=kl
+
+    CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
+       chip:
+
+       CONFIG_ARCH_CHIP_MKL26Z128=y
+
+    CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
+       hence, the board that supports the particular chip or SoC.
+
+       CONFIG_ARCH_BOARD=freedom-kl26z (for the Freescale FRDM-KL26Z development board)
+
+    CONFIG_ARCH_BOARD_name - For use in C code
+
+       CONFIG_ARCH_BOARD_FREEDOM_K26Z128=y
+
+    CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
+       of delay loops
+
+    CONFIG_ENDIAN_BIG - define if big endian (default is little
+       endian)
+
+    CONFIG_RAM_SIZE - Describes the installed DRAM (SRAM in this case):
+
+       CONFIG_RAM_SIZE=16384 (16Kb)
+
+    CONFIG_RAM_START - The start address of installed DRAM
+
+       CONFIG_RAM_START=0x20000000
+
+    CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
+       have LEDs
+
+    CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
+       stack. If defined, this symbol is the size of the interrupt
+       stack in bytes.  If not defined, the user task stacks will be
+       used during interrupt handling.
+
+    CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
+
+    CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.
+
+    CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
+       cause a 100 second delay during boot-up.  This 100 second delay
+       serves no purpose other than it allows you to calibratre
+       CONFIG_ARCH_LOOPSPERMSEC.  You simply use a stop watch to measure
+       the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until
+       the delay actually is 100 seconds.
+
+  Individual subsystems can be enabled as follows.  These settings are for
+  all of the K25Z100/120 line and may not be available for the MKL26Z128
+  in particular:
+
+  AHB
+  ---
+
+    CONFIG_KL_PDMA    Peripheral DMA
+    CONFIG_KL_FMC     Flash memory
+    CONFIG_KL_EBI     External bus interface
+
+  APB1
+  ----
+
+    CONFIG_KL_WDT     Watchdog timer
+    CONFIG_KL_RTC     Real time clock (RTC)
+    CONFIG_KL_TMR0    Timer0
+    CONFIG_KL_TMR1    Timer1
+    CONFIG_KL_I2C0    I2C interface
+    CONFIG_KL_SPI0    SPI0 master/slave
+    CONFIG_KL_SPI1    SPI1 master/slave
+    CONFIG_KL_PWM0    PWM0
+    CONFIG_KL_PWM1    PWM1
+    CONFIG_KL_PWM2    PWM2
+    CONFIG_KL_PWM3    PWM3
+    CONFIG_KL_UART0   UART0
+    CONFIG_KL_USBD    USB 2.0 FS device controller
+    CONFIG_KL_ACMP    Analog comparator
+    CONFIG_KL_ADC     Analog-digital-converter (ADC)
+
+  APB2
+  ---
+
+    CONFIG_KL_PS2     PS/2 interface
+    CONFIG_KL_TIMR2   Timer2
+    CONFIG_KL_TIMR3   Timer3
+    CONFIG_KL_I2C1    I2C1 interface
+    CONFIG_KL_SPI2    SPI2 master/slave
+    CONFIG_KL_SPI3    SPI3 master/slave
+    CONFIG_KL_PWM4    PWM4
+    CONFIG_KL_PWM5    PWM5
+    CONFIG_KL_PWM6    PWM6
+    CONFIG_KL_PWM7    PWM7
+    CONFIG_KL_UART1   UART1
+    CONFIG_KL_UART2   UART2
+    CONFIG_KL_I2S     I2S interface
+
+  K26Z1XX specific device driver settings
+
+    CONFIG_UARTn_SERIAL_CONSOLE - Selects the UARTn (n=0,1,2) for the
+      console and ttys0.
+    CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
+       This specific the size of the receive buffer for UARTn.
+    CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
+       being sent.  This specific the size of the transmit buffer
+       for UARTn.
+    CONFIG_UARTn_BAUD - The configure BAUD of UARTn,
+    CONFIG_UARTn_BITS - The number of bits.  Must be 5, 6, 7, or 8.
+    CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+    CONFIG_UARTn_2STOP - Two stop bits
+
+Configurations
+==============
+
+Each FREEDOM-KL26Z configuration is maintained in a sub-directory and
+can be selected as follow:
+
+    cd tools
+    ./configure.sh freedom-kl26z/<subdir>
+    cd -
+    . ./setenv.sh
+
+If this is a Windows native build, then configure.bat should be used
+instead of configure.sh:
+
+    configure.bat freedom-kl26z\<subdir>
+
+Where <subdir> is one of the following:
+
+  minnsh:
+  ------
+
+    This is a experiment to see just how small we can get a usable NSH
+    configuration.  This configuration has far fewer features than the nsh
+    configuration but is also a fraction of the size.
+
+  nsh:
+  ---
+    Configures the NuttShell (nsh) located at apps/examples/nsh.  The
+    Configuration enables the serial interface on UART0.  Support for
+    builtin applications is disabled.
+
+    NOTES:
+
+    1. This configuration uses the mconf-based configuration tool.  To
+       change this configuration using that tool, you should:
+
+       a. Build and install the kconfig-mconf tool.  See nuttx/README.txt
+          and misc/tools/
+
+       b. Execute 'make menuconfig' in nuttx/ in order to start the
+          reconfiguration process.
+
+    2. By default, this configuration uses the CodeSourcery toolchain
+       for Windows and builds under Cygwin (or probably MSYS).  That
+       can easily be reconfigured, of course.
+
+       CONFIG_HOST_WINDOWS=y                   : Builds under Windows
+       CONFIG_WINDOWS_CYGWIN=y                 : Using Cygwin
+       CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : CodeSourcery for Windows
+
+    3. Serial Console.  A serial console is necessary to interrupt with
+       NSH.   The serial console is configured on UART0 which is available
+       on J1:
+
+       ---------------- ---------
+       UART0 SIGNAL     J1 pin
+       ---------------- ---------
+       UART0_RX (PTA1)  J1, pin 2
+       UART0_TX (PTA2)  J1, pin 4
+
+       Ground is available on J2 pin 14.  3.3V is available on J3 and J4.
+
+       It is possible to configure NSH to use a USB serial console instead
+       of an RS-232 serial console.  However, that configuration has not
+       been impelmented as of this writing.
+
+    4. Memory Usage.  The size command gives us the static memory usage.
+       This is what I get:
+
+       $ size nuttx
+          text    data     bss     dec     hex filename
+         35037     106    1092   36235    8d8b nuttx
+
+       And we can get the runtime memory usage from the NSH free command:
+
+       NuttShell (NSH) NuttX-6.25
+       nsh> free
+            total  used free  largest
+       Mem: 14160  3944 10216 10216
+       nsh>
+
+       Summary:
+
+       - This slightly tuned NSH example uses 34.2KB of FLASH leaving 93.8KB
+         of FLASH (72%) free from additional application development.
+
+         I did not do all of the arithmetic, but it appears to me that of this
+         34+KB of FLASH usage, probably 20-30% of the FLASH is used by libgcc!
+         libgcc has gotten very fat!
+
+       - Static SRAM usage is about 1.2KB (<4%).
+
+       - At run time, 10.0KB of SRAM (62%) is still available for additional
+         applications. Most of the memory used at runtime is allocated I/O
+         buffers and the stack for the NSH main thread (1.5KB).
+
+       There is probably enough free memroy to support 3 or 4 application
+       threads in addition to NSH.
+
+    5. This configurations has support for NSH built-in applications.  However,
+       in the default configuration no built-in applications are enabled.
+
diff --git a/nuttx/configs/freedom-kl26z/include/board.h b/nuttx/configs/freedom-kl26z/include/board.h
new file mode 100644
index 000000000..c498cdd89
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/include/board.h
@@ -0,0 +1,270 @@
+/************************************************************************************
+ * configs/freedom-kl26z/include/board.h
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __CONFIGS_FREEDOME_KL26Z_BOARD_H
+#define __CONFIGS_FREEDOME_KL26Z_BOARD_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#ifndef __ASSEMBLY__
+# include <stdint.h>
+#endif
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/* Clocking *************************************************************************/
+/* The KL26Z has an 8MHz crystal on board */
+
+#undef  BOARD_EXTCLOCK                      /* Crystal */
+#define BOARD_XTAL_FREQ      8000000        /* 8MHz crystal frequency (REFCLK) */
+#define BOARD_XTAL32_FREQ    32768          /* 32KHz RTC Oscillator */
+
+/* PLL Configuration.
+ *
+ *   PLL Input frequency:   PLLIN     = REFCLK / PRDIV0 = 8MHz / 2 = 4MHz
+ *   PLL Output frequency:  PLLOUT    = PLLIN * VDIV0   = 4Mhz * 24 = 96MHz
+ *   MCGPLLCLK Frequency:   MCGPLLCLK = 96MHz
+ */
+
+#define BOARD_PRDIV0         2              /* PLL External Reference Divider */
+#define BOARD_VDIV0          24             /* PLL VCO Divider (frequency multiplier) */
+
+#define BOARD_PLLIN_FREQ     (BOARD_XTAL_FREQ / BOARD_PRDIV0)
+#define BOARD_PLLOUT_FREQ    (BOARD_PLLIN_FREQ * BOARD_VDIV0)
+#define BOARD_MCGPLLCLK_FREQ  BOARD_PLLOUT_FREQ
+
+/* MCGOUTCLK: MCG output of either IRC, MCGFLLCLK, MCGPLLCLK, or MCG's external
+ * reference clock that sources the core, system, bus, and flash clock.
+ *
+ * MCGOUTCLK = MCGPLLCLK = 96MHz
+ */
+
+#define BOARD_MCGOUTCLK_FREQ  BOARD_MCGPLLCLK_FREQ
+
+/* SIM CLKDIV1 dividers.
+ *
+ * Core/system clock
+ *   MCGOUTCLK divided by OUTDIV1, clocks the ARM Cortex-M0+ core
+ *
+ * Bus clock
+ *   System clock divided by OUTDIV4, clocks the bus slaves and peripherals.
+ */
+
+#define BOARD_OUTDIV1        2              /* Core/system = MCGOUTCLK / 2, 48MHz */
+#define BOARD_OUTDIV4        2              /* Bus clock   = System clock / 2, 24MHz */
+
+#define BOARD_CORECLK_FREQ  (BOARD_MCGOUTCLK_FREQ / BOARD_OUTDIV1)
+#define BOARD_BUSCLK_FREQ   (BOARD_CORECLK_FREQ / BOARD_OUTDIV4)
+
+/* SDHC clocking ********************************************************************/
+
+/* SDCLK configurations corresponding to various modes of operation.   Formula is:
+ *
+ *   SDCLK  frequency = (base clock) / (prescaler * divisor)
+ *
+ * The SDHC module is always configure configured so that the core clock is the base
+ * clock.
+ */
+
+/* Identification mode:  400KHz = 96MHz / ( 16 * 15) */
+
+#define BOARD_SDHC_IDMODE_PRESCALER   SDHC_SYSCTL_SDCLKFS_DIV16
+#define BOARD_SDHC_IDMODE_DIVISOR     SDHC_SYSCTL_DVS_DIV(15)
+
+/* MMC normal mode: 16MHz  = 96MHz / (2 * 3) */
+
+#define BOARD_SDHC_MMCMODE_PRESCALER  SDHC_SYSCTL_SDCLKFS_DIV2
+#define BOARD_SDHC_MMCMODE_DIVISOR    SDHC_SYSCTL_DVS_DIV(3)
+
+/* SD normal mode (1-bit): 16MHz  = 96MHz / (2 * 3) */
+
+#define BOARD_SDHC_SD1MODE_PRESCALER  SDHC_SYSCTL_SDCLKFS_DIV2
+#define BOARD_SDHC_SD1MODE_DIVISOR    SDHC_SYSCTL_DVS_DIV(3)
+
+/* SD normal mode (4-bit): 24MHz  = 96MHz / (2 * 2) (with DMA)
+ * SD normal mode (4-bit): 16MHz  = 96MHz / (2 * 3) (no DMA)
+ */
+
+#ifdef CONFIG_SDIO_DMA
+#  define BOARD_SDHC_SD4MODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV2
+#  define BOARD_SDHC_SD4MODE_DIVISOR   SDHC_SYSCTL_DVS_DIV(2)
+#else
+//#  define BOARD_SDHC_SD4MODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV2
+//#  define BOARD_SDHC_SD4MODE_DIVISOR   SDHC_SYSCTL_DVS_DIV(3)
+#  define BOARD_SDHC_SD4MODE_PRESCALER SDHC_SYSCTL_SDCLKFS_DIV16
+#  define BOARD_SDHC_SD4MODE_DIVISOR   SDHC_SYSCTL_DVS_DIV(15)
+#endif
+
+/* PWM Configuration */
+/* TPM0 Channels */
+
+#define GPIO_TPM0_CH0OUT PIN_TPM0_CH0_3 //PIN_TPM0_CH0_1
+#define GPIO_TPM0_CH1OUT PIN_TPM0_CH1_1
+#define GPIO_TPM0_CH2OUT PIN_TPM0_CH2_1
+#define GPIO_TPM0_CH3OUT PIN_TPM0_CH3_1
+#define GPIO_TPM0_CH4OUT PIN_TPM0_CH4_1
+#define GPIO_TPM0_CH5OUT PIN_TPM0_CH5_1
+
+/* TPM1 Channels */
+
+#define GPIO_TPM1_CH0OUT PIN_TPM1_CH0_1
+#define GPIO_TPM1_CH1OUT PIN_TPM1_CH1_1
+
+/* TPM2 Channels */
+
+#define GPIO_TPM2_CH0OUT PIN_TPM2_CH0_1
+#define GPIO_TPM2_CH1OUT PIN_TPM2_CH1_1
+
+/* LED definitions ******************************************************************/
+/* The Freedom KL26Z has a single RGB LED driven by the KL26Z as follows:
+ *
+ *   ------------- --------
+ *   RGB LED       KL26Z128
+ *   ------------- --------
+ *   Red Cathode   PTBE29
+ *   Green Cathode PTE31
+ *   Blue Cathode  PTD5
+ *
+ * NOTE: PTD5 is also connected to the I/O header on J2 pin 12 (also known as D13).
+ *
+ * If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board the
+ * Freedom KL26Z.  The following definitions describe how NuttX controls the LEDs:
+ *
+ *   SYMBOL                Meaning                 LED state
+ *                                                 Initially all LED is OFF
+ *   -------------------  -----------------------  --------------------------
+ *   LED_STARTED          NuttX has been started   R=OFF G=OFF B=OFF
+ *   LED_HEAPALLOCATE     Heap has been allocated  (no change)
+ *   LED_IRQSENABLED      Interrupts enabled       (no change)
+ *   LED_STACKCREATED     Idle stack created       R=OFF G=OFF B=ON
+ *   LED_INIRQ            In an interrupt          (no change)
+ *   LED_SIGNAL           In a signal handler      (no change)
+ *   LED_ASSERTION        An assertion failed      (no change)
+ *   LED_PANIC            The system has crashed   R=FLASHING G=OFF B=OFF
+ *   LED_IDLE             K26Z1XX is in sleep mode (Optional, not used)
+ */
+
+#define LED_STARTED       0
+#define LED_HEAPALLOCATE  1
+#define LED_IRQSENABLED   2
+#define LED_STACKCREATED  3
+#define LED_INIRQ         4
+#define LED_SIGNAL        5
+#define LED_ASSERTION     6
+#define LED_PANIC         7
+
+/* Button definitions ***************************************************************/
+/* The Freedom KL26Z board has no standard GPIO contact buttons */
+
+/* Alternative pin resolution *******************************************************/
+/* If there are alternative configurations for various pins in the k26z128_pinmux.h
+ * header file, those alternative pins will be labeled with a suffix like _1, _2,
+ * etc.  The logic in this file must select the correct pin configuration for the
+ * board by defining a pin configuration (with no suffix) that maps to the correct
+ * alternative.
+ */
+
+/* SPI0 Pinout
+ * ===========
+ *
+ * SCK = PTD1 (D13 at connector J2 pin 12 of Freedom Board)
+ * MISO = PTD3 (D12 at connector J2 pin 10 of Freedom Board)
+ * MOSI = PTD2 (D11 at connector J2 pin 8 of Freedom Board)
+ */
+
+#define PIN_SPI0_SCK   (PIN_SPI0_SCK_3 | PIN_ALT2_PULLUP)
+#define PIN_SPI0_MISO  (PIN_SPI0_MISO_6 | PIN_ALT2_PULLUP)
+#define PIN_SPI0_MOSI  (PIN_SPI0_MOSI_5 | PIN_ALT2_PULLUP)
+
+#define PIN_SPI1_SCK   (PIN_SPI1_SCK_2 | PIN_ALT2_PULLUP)
+#define PIN_SPI1_MISO  (PIN_SPI1_MISO_3 | PIN_ALT2_PULLUP)
+#define PIN_SPI1_MOSI  (PIN_SPI0_MOSI_7 | PIN_ALT2_PULLUP)
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+/************************************************************************************
+ * Name: kl_boardinitialize
+ *
+ * Description:
+ *   All Kinetis L architectures must provide the following entry point.  This entry
+ *   point is called early in the initialization -- after all memory has been
+ *   configured and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+void kl_boardinitialize(void);
+
+/************************************************************************************
+ * Name: kl_tsi_initialize
+ *
+ * Description:
+ *   Initialize the TSI hardware and interface for the sliders on board the Freedom
+ *   KL26Z board.  Register a character driver at /dev/tsi that may be used to read
+ *   from each sensor.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_KL_TSI
+void kl_tsi_initialize(void);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif  /* __CONFIGS_FREEDOME_KL26Z_BOARD_H */
diff --git a/nuttx/configs/freedom-kl26z/minnsh/Make.defs b/nuttx/configs/freedom-kl26z/minnsh/Make.defs
new file mode 100644
index 000000000..a4dfdee1f
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/minnsh/Make.defs
@@ -0,0 +1,123 @@
+############################################################################
+# configs/freedom-kl26z/minnsh/Make.defs
+#
+#   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv6-m/Toolchain.defs
+
+LDSCRIPT = ld.script
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
+else
+  # Linux/Cygwin-native toolchain
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(ARCROSSDEV)ar rcs
+NM = $(ARCROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+ifeq ($(CONFIG_HOST_WINDOWS),y)
+  HOSTEXEEXT = .exe
+else
+  HOSTEXEEXT =
+endif
+
+ifeq ($(WINTOOL),y)
+  # Windows-native host tools
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+else
+  # Linux/Cygwin-native host tools
+  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
+endif
+
diff --git a/nuttx/configs/freedom-kl26z/minnsh/defconfig b/nuttx/configs/freedom-kl26z/minnsh/defconfig
new file mode 100644
index 000000000..09093e5dc
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/minnsh/defconfig
@@ -0,0 +1,829 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Nuttx/ Configuration
+#
+
+#
+# Build Setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_DEFAULT_SMALL=y
+CONFIG_HOST_LINUX=y
+# CONFIG_HOST_OSX is not set
+# CONFIG_HOST_WINDOWS is not set
+# CONFIG_HOST_OTHER is not set
+
+#
+# Build Configuration
+#
+# CONFIG_APPS_DIR="../apps"
+CONFIG_BUILD_FLAT=y
+# CONFIG_BUILD_2PASS is not set
+
+#
+# Binary Output Formats
+#
+# CONFIG_RRLOAD_BINARY is not set
+# CONFIG_INTELHEX_BINARY is not set
+CONFIG_MOTOROLA_SREC=y
+CONFIG_RAW_BINARY=y
+# CONFIG_UBOOT_UIMAGE is not set
+
+#
+# Customize Header Files
+#
+# CONFIG_ARCH_STDINT_H is not set
+# CONFIG_ARCH_STDBOOL_H is not set
+# CONFIG_ARCH_MATH_H is not set
+# CONFIG_ARCH_FLOAT_H is not set
+# CONFIG_ARCH_STDARG_H is not set
+
+#
+# Debug Options
+#
+# CONFIG_DEBUG is not set
+# CONFIG_ARCH_HAVE_HEAPCHECK is not set
+CONFIG_ARCH_HAVE_STACKCHECK=y
+# CONFIG_STACK_COLORATION is not set
+# CONFIG_DEBUG_SYMBOLS is not set
+CONFIG_ARCH_HAVE_CUSTOMOPT=y
+# CONFIG_DEBUG_NOOPT is not set
+# CONFIG_DEBUG_CUSTOMOPT is not set
+CONFIG_DEBUG_FULLOPT=y
+
+#
+# System Type
+#
+CONFIG_ARCH_ARM=y
+# CONFIG_ARCH_AVR is not set
+# CONFIG_ARCH_HC is not set
+# CONFIG_ARCH_MIPS is not set
+# CONFIG_ARCH_RGMP is not set
+# CONFIG_ARCH_SH is not set
+# CONFIG_ARCH_SIM is not set
+# CONFIG_ARCH_X86 is not set
+# CONFIG_ARCH_Z16 is not set
+# CONFIG_ARCH_Z80 is not set
+CONFIG_ARCH="arm"
+
+#
+# ARM Options
+#
+# CONFIG_ARCH_CHIP_A1X is not set
+# CONFIG_ARCH_CHIP_C5471 is not set
+# CONFIG_ARCH_CHIP_CALYPSO is not set
+# CONFIG_ARCH_CHIP_DM320 is not set
+# CONFIG_ARCH_CHIP_EFM32 is not set
+# CONFIG_ARCH_CHIP_IMX is not set
+# CONFIG_ARCH_CHIP_KINETIS is not set
+CONFIG_ARCH_CHIP_KL=y
+# CONFIG_ARCH_CHIP_LM is not set
+# CONFIG_ARCH_CHIP_TIVA is not set
+# CONFIG_ARCH_CHIP_LPC17XX is not set
+# CONFIG_ARCH_CHIP_LPC214X is not set
+# CONFIG_ARCH_CHIP_LPC2378 is not set
+# CONFIG_ARCH_CHIP_LPC31XX is not set
+# CONFIG_ARCH_CHIP_LPC43XX is not set
+# CONFIG_ARCH_CHIP_NUC1XX is not set
+# CONFIG_ARCH_CHIP_SAMA5 is not set
+# CONFIG_ARCH_CHIP_SAMD is not set
+# CONFIG_ARCH_CHIP_SAM34 is not set
+# CONFIG_ARCH_CHIP_STM32 is not set
+# CONFIG_ARCH_CHIP_STR71X is not set
+# CONFIG_ARCH_ARM7TDMI is not set
+# CONFIG_ARCH_ARM926EJS is not set
+# CONFIG_ARCH_ARM920T is not set
+CONFIG_ARCH_CORTEXM0=y
+# CONFIG_ARCH_CORTEXM3 is not set
+# CONFIG_ARCH_CORTEXM4 is not set
+# CONFIG_ARCH_CORTEXA5 is not set
+# CONFIG_ARCH_CORTEXA8 is not set
+CONFIG_ARCH_FAMILY="armv6-m"
+CONFIG_ARCH_CHIP="kl"
+CONFIG_ARCH_HAVE_CMNVECTOR=y
+# CONFIG_ARMV7M_CMNVECTOR is not set
+# CONFIG_ARCH_HAVE_FPU is not set
+
+#
+# ARMV6M Configuration Options
+#
+# CONFIG_ARMV6M_TOOLCHAIN_BUILDROOT is not set
+# CONFIG_ARMV6M_TOOLCHAIN_CODEREDL is not set
+# CONFIG_ARMV6M_TOOLCHAIN_CODESOURCERYL is not set
+CONFIG_ARMV6M_TOOLCHAIN_GNU_EABIL=y
+# CONFIG_GPIO_IRQ is not set
+
+#
+# Kinetis Configuration Options
+#
+# CONFIG_ARCH_CHIP_MKL25Z128 is not set
+CONFIG_ARCH_CHIP_MKL26Z128=y
+CONFIG_ARCH_FAMILY_KL2X=y
+
+#
+# Kinetis Peripheral Support
+#
+# CONFIG_KL_TRACE is not set
+# CONFIG_KL_FLEXBUS is not set
+CONFIG_KL_UART0=y
+# CONFIG_KL_UART1 is not set
+# CONFIG_KL_UART2 is not set
+# CONFIG_KL_FLEXCAN0 is not set
+# CONFIG_KL_FLEXCAN1 is not set
+CONFIG_KL_SPI0=y
+CONFIG_KL_SPI1=y
+# CONFIG_KL_SPI2 is not set
+# CONFIG_KL_I2C0 is not set
+# CONFIG_KL_I2C1 is not set
+# CONFIG_KL_I2S is not set
+# CONFIG_KL_DAC0 is not set
+# CONFIG_KL_DAC1 is not set
+# CONFIG_KL_ADC0 is not set
+# CONFIG_KL_ADC1 is not set
+# CONFIG_KL_CMP is not set
+# CONFIG_KL_VREF is not set
+# CONFIG_KL_TPM0 is not set
+# CONFIG_KL_TPM1 is not set
+# CONFIG_KL_TPM2 is not set
+# CONFIG_KL_LPTIMER is not set
+# CONFIG_KL_RTC is not set
+# CONFIG_KL_EWM is not set
+# CONFIG_KL_CMT is not set
+# CONFIG_KL_USBOTG is not set
+# CONFIG_KL_USBDCD is not set
+# CONFIG_KL_LLWU is not set
+# CONFIG_KL_TSI is not set
+# CONFIG_KL_FTFL is not set
+# CONFIG_KL_DMA is not set
+# CONFIG_KL_CRC is not set
+# CONFIG_KL_PDB is not set
+# CONFIG_KL_PIT is not set
+CONFIG_KL_SYSTICK_CORECLK=y
+# CONFIG_KL_SYSTICK_CORECLK_DIV16 is not set
+
+#
+# Kinetis GPIO Interrupt Configuration
+#
+
+#
+# Architecture Options
+#
+# CONFIG_ARCH_NOINTC is not set
+# CONFIG_ARCH_VECNOTIRQ is not set
+# CONFIG_ARCH_DMA is not set
+CONFIG_ARCH_HAVE_IRQPRIO=y
+# CONFIG_ARCH_L2CACHE is not set
+# CONFIG_ARCH_HAVE_COHERENT_DCACHE is not set
+# CONFIG_ARCH_HAVE_ADDRENV is not set
+# CONFIG_ARCH_NEED_ADDRENV_MAPPING is not set
+CONFIG_ARCH_HAVE_VFORK=y
+# CONFIG_ARCH_HAVE_MMU is not set
+# CONFIG_ARCH_HAVE_MPU is not set
+# CONFIG_ARCH_NAND_HWECC is not set
+# CONFIG_ARCH_HAVE_EXTCLK is not set
+# CONFIG_ARCH_IRQPRIO is not set
+CONFIG_ARCH_STACKDUMP=y
+# CONFIG_ENDIAN_BIG is not set
+# CONFIG_ARCH_IDLE_CUSTOM is not set
+# CONFIG_ARCH_HAVE_RAMFUNCS is not set
+# CONFIG_ARCH_HAVE_RAMVECTORS is not set
+
+#
+# Board Settings
+#
+CONFIG_BOARD_LOOPSPERMSEC=2988
+# CONFIG_ARCH_CALIBRATION is not set
+
+#
+# Interrupt options
+#
+CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
+CONFIG_ARCH_INTERRUPTSTACK=0
+# CONFIG_ARCH_HAVE_HIPRI_INTERRUPT is not set
+
+#
+# Boot options
+#
+# CONFIG_BOOT_RUNFROMEXTSRAM is not set
+CONFIG_BOOT_RUNFROMFLASH=y
+# CONFIG_BOOT_RUNFROMISRAM is not set
+# CONFIG_BOOT_RUNFROMSDRAM is not set
+# CONFIG_BOOT_COPYTORAM is not set
+
+#
+# Boot Memory Configuration
+#
+CONFIG_RAM_START=0x1FFFF000
+CONFIG_RAM_SIZE=16384
+# CONFIG_ARCH_HAVE_SDRAM is not set
+
+#
+# Board Selection
+#
+# CONFIG_ARCH_BOARD_FREEDOM_KL25Z is not set
+CONFIG_ARCH_BOARD_FREEDOM_KL26Z=y
+# CONFIG_ARCH_BOARD_CUSTOM is not set
+CONFIG_ARCH_BOARD="freedom-kl26z"
+
+#
+# Common Board Options
+#
+CONFIG_ARCH_HAVE_LEDS=y
+CONFIG_ARCH_LEDS=y
+CONFIG_NSH_MMCSDMINOR=0
+
+#
+# Board-Specific Options
+#
+
+#
+# RTOS Features
+#
+CONFIG_DISABLE_OS_API=y
+CONFIG_DISABLE_POSIX_TIMERS=y
+CONFIG_DISABLE_PTHREAD=y
+CONFIG_DISABLE_SIGNALS=y
+CONFIG_DISABLE_MQUEUE=y
+CONFIG_DISABLE_ENVIRON=y
+
+#
+# Clocks and Timers
+#
+CONFIG_USEC_PER_TICK=10000
+# CONFIG_SYSTEM_TIME64 is not set
+# CONFIG_CLOCK_MONOTONIC is not set
+# CONFIG_JULIAN_TIME is not set
+CONFIG_START_YEAR=2013
+CONFIG_START_MONTH=2
+CONFIG_START_DAY=26
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_WDOG_INTRESERVE=0
+CONFIG_PREALLOC_TIMERS=0
+
+#
+# Tasks and Scheduling
+#
+# CONFIG_INIT_NONE is not set
+CONFIG_INIT_ENTRYPOINT=y
+# CONFIG_INIT_FILEPATH is not set
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_RR_INTERVAL=0
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_MAX_TASKS=8
+# CONFIG_SCHED_HAVE_PARENT is not set
+# CONFIG_SCHED_WAITPID is not set
+
+#
+# Performance Monitoring
+#
+# CONFIG_SCHED_CPULOAD is not set
+# CONFIG_SCHED_INSTRUMENTATION is not set
+
+#
+# Files and I/O
+#
+# CONFIG_DEV_CONSOLE is not set
+CONFIG_FDCLONE_DISABLE=y
+# CONFIG_FDCLONE_STDIO is not set
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_NFILE_DESCRIPTORS=0
+CONFIG_NFILE_STREAMS=0
+CONFIG_NAME_MAX=32
+# CONFIG_PRIORITY_INHERITANCE is not set
+
+#
+# RTOS hooks
+#
+# CONFIG_BOARD_INITIALIZE is not set
+# CONFIG_SCHED_STARTHOOK is not set
+# CONFIG_SCHED_ATEXIT is not set
+# CONFIG_SCHED_ONEXIT is not set
+
+#
+# Work Queue Support
+#
+
+#
+# Stack and heap information
+#
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=1536
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=1536
+# CONFIG_LIB_SYSCALL is not set
+
+#
+# Device Drivers
+#
+CONFIG_DISABLE_POLL=y
+# CONFIG_DEV_NULL is not set
+# CONFIG_DEV_ZERO is not set
+# CONFIG_LOOP is not set
+
+#
+# Buffering
+#
+# CONFIG_DRVR_WRITEBUFFER is not set
+# CONFIG_DRVR_READAHEAD is not set
+# CONFIG_RAMDISK is not set
+# CONFIG_CAN is not set
+# CONFIG_ARCH_HAVE_PWM_PULSECOUNT is not set
+# CONFIG_PWM is not set
+# CONFIG_ARCH_HAVE_I2CRESET is not set
+# CONFIG_I2C is not set
+CONFIG_SPI=y
+# CONFIG_SPI_OWNBUS is not set
+CONFIG_SPI_EXCHANGE=y
+# CONFIG_SPI_CMDDATA is not set
+# CONFIG_SPI_BITBANG is not set
+# CONFIG_I2S is not set
+# CONFIG_RTC is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_TIMER is not set
+# CONFIG_ANALOG is not set
+# CONFIG_AUDIO_DEVICES is not set
+# CONFIG_VIDEO_DEVICES is not set
+# CONFIG_BCH is not set
+# CONFIG_INPUT is not set
+# CONFIG_LCD is not set
+# CONFIG_MMCSD is not set
+# CONFIG_MTD is not set
+# CONFIG_EEPROM is not set
+# CONFIG_PIPES is not set
+# CONFIG_PM is not set
+# CONFIG_POWER is not set
+# CONFIG_SENSORS is not set
+# CONFIG_SERCOMM_CONSOLE is not set
+CONFIG_SERIAL=y
+# CONFIG_16550_UART is not set
+# CONFIG_ARCH_HAVE_UART is not set
+CONFIG_ARCH_HAVE_UART0=y
+# CONFIG_ARCH_HAVE_UART1 is not set
+# CONFIG_ARCH_HAVE_UART2 is not set
+# CONFIG_ARCH_HAVE_UART3 is not set
+# CONFIG_ARCH_HAVE_UART4 is not set
+# CONFIG_ARCH_HAVE_UART5 is not set
+# CONFIG_ARCH_HAVE_UART6 is not set
+# CONFIG_ARCH_HAVE_UART7 is not set
+# CONFIG_ARCH_HAVE_UART8 is not set
+# CONFIG_ARCH_HAVE_SCI0 is not set
+# CONFIG_ARCH_HAVE_SCI1 is not set
+# CONFIG_ARCH_HAVE_USART0 is not set
+# CONFIG_ARCH_HAVE_USART1 is not set
+# CONFIG_ARCH_HAVE_USART2 is not set
+# CONFIG_ARCH_HAVE_USART3 is not set
+# CONFIG_ARCH_HAVE_USART4 is not set
+# CONFIG_ARCH_HAVE_USART5 is not set
+# CONFIG_ARCH_HAVE_USART6 is not set
+# CONFIG_ARCH_HAVE_USART7 is not set
+# CONFIG_ARCH_HAVE_USART8 is not set
+# CONFIG_ARCH_HAVE_OTHER_UART is not set
+
+#
+# USART Configuration
+#
+CONFIG_MCU_SERIAL=y
+# CONFIG_STANDARD_SERIAL is not set
+# CONFIG_SERIAL_IFLOWCONTROL is not set
+# CONFIG_SERIAL_OFLOWCONTROL is not set
+# CONFIG_ARCH_HAVE_SERIAL_TERMIOS is not set
+CONFIG_UART0_SERIAL_CONSOLE=y
+# CONFIG_OTHER_SERIAL_CONSOLE is not set
+# CONFIG_NO_SERIAL_CONSOLE is not set
+
+#
+# UART0 Configuration
+#
+CONFIG_UART0_RXBUFSIZE=256
+CONFIG_UART0_TXBUFSIZE=256
+CONFIG_UART0_BAUD=115200
+CONFIG_UART0_BITS=8
+CONFIG_UART0_PARITY=0
+CONFIG_UART0_2STOP=0
+# CONFIG_UART0_IFLOWCONTROL is not set
+# CONFIG_UART0_OFLOWCONTROL is not set
+# CONFIG_USBDEV is not set
+# CONFIG_USBHOST is not set
+# CONFIG_WIRELESS is not set
+
+#
+# System Logging Device Options
+#
+
+#
+# System Logging
+#
+# CONFIG_RAMLOG is not set
+
+#
+# Networking Support
+#
+# CONFIG_ARCH_HAVE_NET is not set
+# CONFIG_ARCH_HAVE_PHY is not set
+# CONFIG_NET is not set
+
+#
+# Crypto API
+#
+# CONFIG_CRYPTO is not set
+
+#
+# File Systems
+#
+
+#
+# File system configuration
+#
+CONFIG_DISABLE_MOUNTPOINT=y
+CONFIG_DISABLE_PSEUDOFS_OPERATIONS=y
+# CONFIG_FS_READABLE is not set
+# CONFIG_FS_WRITABLE is not set
+# CONFIG_FS_NAMED_SEMAPHORES is not set
+# CONFIG_FS_RAMMAP is not set
+# CONFIG_FS_PROCFS is not set
+
+#
+# System Logging
+#
+# CONFIG_SYSLOG is not set
+# CONFIG_SYSLOG_TIMESTAMP is not set
+
+#
+# Graphics Support
+#
+# CONFIG_NX is not set
+
+#
+# Memory Management
+#
+CONFIG_MM_SMALL=y
+CONFIG_MM_REGIONS=1
+# CONFIG_ARCH_HAVE_HEAP2 is not set
+# CONFIG_GRAN is not set
+
+#
+# Audio Support
+#
+# CONFIG_AUDIO is not set
+
+#
+# Binary Loader
+#
+# CONFIG_BINFMT_DISABLE is not set
+# CONFIG_NXFLAT is not set
+# CONFIG_ELF is not set
+# CONFIG_BUILTIN is not set
+# CONFIG_PIC is not set
+# CONFIG_SYMTAB_ORDEREDBYNAME is not set
+
+#
+# Library Routines
+#
+
+#
+# Standard C Library Options
+#
+CONFIG_STDIO_BUFFER_SIZE=0
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=0
+# CONFIG_LIBM is not set
+CONFIG_NOPRINTF_FIELDWIDTH=y
+# CONFIG_LIBC_FLOATINGPOINT is not set
+# CONFIG_LIBC_IOCTL_VARIADIC is not set
+CONFIG_LIB_RAND_ORDER=1
+# CONFIG_EOL_IS_CR is not set
+# CONFIG_EOL_IS_LF is not set
+# CONFIG_EOL_IS_BOTH_CRLF is not set
+CONFIG_EOL_IS_EITHER_CRLF=y
+# CONFIG_LIBC_EXECFUNCS is not set
+CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
+# CONFIG_LIBC_STRERROR is not set
+# CONFIG_LIBC_PERROR_STDOUT is not set
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_LIB_SENDFILE_BUFSIZE=512
+# CONFIG_ARCH_ROMGETC is not set
+# CONFIG_ARCH_OPTIMIZED_FUNCTIONS is not set
+
+#
+# Non-standard Library Support
+#
+# CONFIG_LIB_KBDCODEC is not set
+# CONFIG_LIB_SLCDCODEC is not set
+
+#
+# Basic CXX Support
+#
+# CONFIG_C99_BOOL8 is not set
+# CONFIG_HAVE_CXX is not set
+
+#
+# Application Configuration
+#
+
+#
+# Built-In Applications
+#
+
+#
+# Examples
+#
+# CONFIG_EXAMPLES_BUTTONS is not set
+# CONFIG_EXAMPLES_CAN is not set
+# CONFIG_EXAMPLES_CONFIGDATA is not set
+# CONFIG_EXAMPLES_CPUHOG is not set
+# CONFIG_EXAMPLES_DHCPD is not set
+# CONFIG_EXAMPLES_ELF is not set
+# CONFIG_EXAMPLES_FTPC is not set
+# CONFIG_EXAMPLES_FTPD is not set
+# CONFIG_EXAMPLES_HELLO is not set
+# CONFIG_EXAMPLES_HELLOXX is not set
+# CONFIG_EXAMPLES_JSON is not set
+# CONFIG_EXAMPLES_HIDKBD is not set
+# CONFIG_EXAMPLES_KEYPADTEST is not set
+# CONFIG_EXAMPLES_IGMP is not set
+# CONFIG_EXAMPLES_MM is not set
+# CONFIG_EXAMPLES_MODBUS is not set
+# CONFIG_EXAMPLES_MOUNT is not set
+# CONFIG_EXAMPLES_NRF24L01TERM is not set
+CONFIG_EXAMPLES_NSH=y
+# CONFIG_EXAMPLES_NULL is not set
+# CONFIG_EXAMPLES_NX is not set
+# CONFIG_EXAMPLES_NXTERM is not set
+# CONFIG_EXAMPLES_NXFFS is not set
+# CONFIG_EXAMPLES_NXFLAT is not set
+# CONFIG_EXAMPLES_NXHELLO is not set
+# CONFIG_EXAMPLES_NXIMAGE is not set
+# CONFIG_EXAMPLES_NXLINES is not set
+# CONFIG_EXAMPLES_NXTEXT is not set
+# CONFIG_EXAMPLES_OSTEST is not set
+# CONFIG_EXAMPLES_PIPE is not set
+# CONFIG_EXAMPLES_POLL is not set
+# CONFIG_EXAMPLES_POSIXSPAWN is not set
+# CONFIG_EXAMPLES_QENCODER is not set
+# CONFIG_EXAMPLES_RGMP is not set
+# CONFIG_EXAMPLES_ROMFS is not set
+# CONFIG_EXAMPLES_SENDMAIL is not set
+# CONFIG_EXAMPLES_SERIALBLASTER is not set
+# CONFIG_EXAMPLES_SERIALRX is not set
+# CONFIG_EXAMPLES_SERLOOP is not set
+# CONFIG_EXAMPLES_SLCD is not set
+# CONFIG_EXAMPLES_SMART is not set
+# CONFIG_EXAMPLES_TCPECHO is not set
+# CONFIG_EXAMPLES_TELNETD is not set
+# CONFIG_EXAMPLES_THTTPD is not set
+# CONFIG_EXAMPLES_TIFF is not set
+# CONFIG_EXAMPLES_TOUCHSCREEN is not set
+# CONFIG_EXAMPLES_WEBSERVER is not set
+# CONFIG_EXAMPLES_USBSERIAL is not set
+# CONFIG_EXAMPLES_USBTERM is not set
+# CONFIG_EXAMPLES_WATCHDOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_TIFF is not set
+# CONFIG_GRAPHICS_TRAVELER is not set
+
+#
+# Interpreters
+#
+# CONFIG_INTERPRETERS_FICL is not set
+# CONFIG_INTERPRETERS_PCODE is not set
+# CONFIG_INTERPRETERS_MICROPYTHON is not set
+
+#
+# Network Utilities
+#
+
+#
+# Networking Utilities
+#
+# CONFIG_NETUTILS_CODECS is not set
+# CONFIG_NETUTILS_FTPC is not set
+# CONFIG_NETUTILS_FTPD is not set
+# CONFIG_NETUTILS_JSON is not set
+# CONFIG_NETUTILS_SMTP is not set
+# CONFIG_NETUTILS_TFTPC is not set
+# CONFIG_NETUTILS_THTTPD is not set
+# CONFIG_NETUTILS_NETLIB is not set
+# CONFIG_NETUTILS_WEBCLIENT is not set
+
+#
+# FreeModBus
+#
+# CONFIG_MODBUS is not set
+
+#
+# NSH Library
+#
+CONFIG_NSH_LIBRARY=y
+
+#
+# Command Line Configuration
+#
+CONFIG_NSH_READLINE=y
+# CONFIG_NSH_CLE is not set
+CONFIG_NSH_LINELEN=80
+CONFIG_NSH_DISABLE_SEMICOLON=y
+CONFIG_NSH_MAXARGUMENTS=6
+# CONFIG_NSH_ARGCAT is not set
+CONFIG_NSH_NESTDEPTH=3
+# CONFIG_NSH_DISABLEBG is not set
+
+#
+# Disable Individual commands
+#
+CONFIG_NSH_DISABLE_ADDROUTE=y
+# CONFIG_NSH_DISABLE_CAT is not set
+CONFIG_NSH_DISABLE_CD=y
+CONFIG_NSH_DISABLE_CP=y
+# CONFIG_NSH_DISABLE_CMP is not set
+CONFIG_NSH_DISABLE_DD=y
+CONFIG_NSH_DISABLE_DF=y
+CONFIG_NSH_DISABLE_DELROUTE=y
+# CONFIG_NSH_DISABLE_ECHO is not set
+# CONFIG_NSH_DISABLE_EXEC is not set
+# CONFIG_NSH_DISABLE_EXIT is not set
+# CONFIG_NSH_DISABLE_FREE is not set
+CONFIG_NSH_DISABLE_GET=y
+# CONFIG_NSH_DISABLE_HELP is not set
+# CONFIG_NSH_DISABLE_HEXDUMP is not set
+CONFIG_NSH_DISABLE_IFCONFIG=y
+# CONFIG_NSH_DISABLE_KILL is not set
+CONFIG_NSH_DISABLE_LOSETUP=y
+# CONFIG_NSH_DISABLE_LS is not set
+# CONFIG_NSH_DISABLE_MB is not set
+CONFIG_NSH_DISABLE_MKDIR=y
+# CONFIG_NSH_DISABLE_MKFIFO is not set
+CONFIG_NSH_DISABLE_MKRD=y
+# CONFIG_NSH_DISABLE_MH is not set
+CONFIG_NSH_DISABLE_MOUNT=y
+# CONFIG_NSH_DISABLE_MW is not set
+# CONFIG_NSH_DISABLE_PS is not set
+CONFIG_NSH_DISABLE_PUT=y
+# CONFIG_NSH_DISABLE_PWD is not set
+CONFIG_NSH_DISABLE_RM=y
+CONFIG_NSH_DISABLE_RMDIR=y
+# CONFIG_NSH_DISABLE_SET is not set
+# CONFIG_NSH_DISABLE_SH is not set
+# CONFIG_NSH_DISABLE_SLEEP is not set
+# CONFIG_NSH_DISABLE_TEST is not set
+CONFIG_NSH_DISABLE_UMOUNT=y
+# CONFIG_NSH_DISABLE_UNSET is not set
+# CONFIG_NSH_DISABLE_USLEEP is not set
+CONFIG_NSH_DISABLE_WGET=y
+# CONFIG_NSH_DISABLE_XD is not set
+
+#
+# Configure Command Options
+#
+CONFIG_NSH_CODECS_BUFSIZE=128
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_NSH_FILEIOSIZE=64
+
+#
+# Scripting Support
+#
+CONFIG_NSH_DISABLESCRIPT=y
+
+#
+# Console Configuration
+#
+CONFIG_NSH_CONSOLE=y
+# CONFIG_NSH_ALTCONDEV is not set
+# CONFIG_NSH_ARCHINIT is not set
+
+#
+# NxWidgets/NxWM
+#
+
+#
+# Platform-specific Support
+#
+# CONFIG_PLATFORM_CONFIGDATA is not set
+
+#
+# System Libraries and NSH Add-Ons
+#
+
+#
+# Custom Free Memory Command
+#
+# CONFIG_SYSTEM_FREE is not set
+
+#
+# EMACS-like Command Line Editor
+#
+# CONFIG_SYSTEM_CLE is not set
+
+#
+# CU Minimal Terminal
+#
+# CONFIG_SYSTEM_CUTERM is not set
+
+#
+# FLASH Program Installation
+#
+# CONFIG_SYSTEM_INSTALL is not set
+
+#
+# FLASH Erase-all Command
+#
+
+#
+# Intel HEX to binary conversion
+#
+# CONFIG_SYSTEM_HEX2BIN is not set
+
+#
+# I2C tool
+#
+
+#
+# INI File Parser
+#
+# CONFIG_SYSTEM_INIFILE is not set
+
+#
+# NxPlayer media player library / command Line
+#
+
+#
+# RAM test
+#
+# CONFIG_SYSTEM_RAMTEST is not set
+
+#
+# readline()
+#
+CONFIG_SYSTEM_READLINE=y
+CONFIG_READLINE_ECHO=y
+
+#
+# P-Code Support
+#
+
+#
+# PHY Tool
+#
+
+#
+# Power Off
+#
+# CONFIG_SYSTEM_POWEROFF is not set
+
+#
+# RAMTRON
+#
+# CONFIG_SYSTEM_RAMTRON is not set
+
+#
+# SD Card
+#
+# CONFIG_SYSTEM_SDCARD is not set
+
+#
+# Sudoku
+#
+# CONFIG_SYSTEM_SUDOKU is not set
+
+#
+# Sysinfo
+#
+# CONFIG_SYSTEM_SYSINFO is not set
+
+#
+# Temperature
+#
+
+#
+# VI Work-Alike Editor
+#
+# CONFIG_SYSTEM_VI is not set
+
+#
+# Stack Monitor
+#
+
+#
+# USB CDC/ACM Device Commands
+#
+
+#
+# USB Composite Device Commands
+#
+
+#
+# USB Mass Storage Device Commands
+#
+
+#
+# USB Monitor
+#
+
+#
+# Zmodem Commands
+#
+# CONFIG_SYSTEM_ZMODEM is not set
diff --git a/nuttx/configs/freedom-kl26z/minnsh/setenv.sh b/nuttx/configs/freedom-kl26z/minnsh/setenv.sh
new file mode 100644
index 000000000..11b8eabb3
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/minnsh/setenv.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+# configs/freedom-kl26z/minnsh/setenv.sh
+#
+#   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+if [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+  export PATH_ORIG="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+#export TOOLCHAIN_BIN="/cygdrive/c/Users/MyName/MentorGraphics/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
+
+# These are the Cygwin paths to the locations where I installed the Atollic
+# toolchain under windows.  You will also have to edit this if you install
+# the Atollic toolchain in any other location.  /usr/bin is added before
+# the Atollic bin path because there is are binaries named gcc.exe and g++.exe
+# at those locations as well.
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for ARM Pro 2.3.0/ARMTools/bin"
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for STMicroelectronics STM32 Lite 2.3.0/ARMTools/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/freedom-kl26z/nsh/Make.defs b/nuttx/configs/freedom-kl26z/nsh/Make.defs
new file mode 100644
index 000000000..6204b1e84
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/nsh/Make.defs
@@ -0,0 +1,123 @@
+############################################################################
+# configs/freedom-kl26z/nsh/Make.defs
+#
+#   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv6-m/Toolchain.defs
+
+LDSCRIPT = ld.script
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
+else
+  # Linux/Cygwin-native toolchain
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(ARCROSSDEV)ar rcs
+NM = $(ARCROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+ifeq ($(CONFIG_HOST_WINDOWS),y)
+  HOSTEXEEXT = .exe
+else
+  HOSTEXEEXT =
+endif
+
+ifeq ($(WINTOOL),y)
+  # Windows-native host tools
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+else
+  # Linux/Cygwin-native host tools
+  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
+endif
+
diff --git a/nuttx/configs/freedom-kl26z/nsh/defconfig b/nuttx/configs/freedom-kl26z/nsh/defconfig
new file mode 100644
index 000000000..996171f1b
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/nsh/defconfig
@@ -0,0 +1,854 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Nuttx/ Configuration
+#
+
+#
+# Build Setup
+#
+# CONFIG_EXPERIMENTAL is not set
+CONFIG_DEFAULT_SMALL=y
+CONFIG_HOST_LINUX=y
+# CONFIG_HOST_OSX is not set
+# CONFIG_HOST_WINDOWS is not set
+# CONFIG_HOST_OTHER is not set
+
+#
+# Build Configuration
+#
+# CONFIG_APPS_DIR="../apps"
+CONFIG_BUILD_FLAT=y
+# CONFIG_BUILD_2PASS is not set
+
+#
+# Binary Output Formats
+#
+# CONFIG_RRLOAD_BINARY is not set
+# CONFIG_INTELHEX_BINARY is not set
+CONFIG_MOTOROLA_SREC=y
+CONFIG_RAW_BINARY=y
+# CONFIG_UBOOT_UIMAGE is not set
+
+#
+# Customize Header Files
+#
+# CONFIG_ARCH_STDINT_H is not set
+# CONFIG_ARCH_STDBOOL_H is not set
+# CONFIG_ARCH_MATH_H is not set
+# CONFIG_ARCH_FLOAT_H is not set
+# CONFIG_ARCH_STDARG_H is not set
+
+#
+# Debug Options
+#
+# CONFIG_DEBUG is not set
+# CONFIG_ARCH_HAVE_HEAPCHECK is not set
+CONFIG_ARCH_HAVE_STACKCHECK=y
+# CONFIG_STACK_COLORATION is not set
+# CONFIG_DEBUG_SYMBOLS is not set
+CONFIG_ARCH_HAVE_CUSTOMOPT=y
+# CONFIG_DEBUG_NOOPT is not set
+# CONFIG_DEBUG_CUSTOMOPT is not set
+CONFIG_DEBUG_FULLOPT=y
+
+#
+# System Type
+#
+CONFIG_ARCH_ARM=y
+# CONFIG_ARCH_AVR is not set
+# CONFIG_ARCH_HC is not set
+# CONFIG_ARCH_MIPS is not set
+# CONFIG_ARCH_RGMP is not set
+# CONFIG_ARCH_SH is not set
+# CONFIG_ARCH_SIM is not set
+# CONFIG_ARCH_X86 is not set
+# CONFIG_ARCH_Z16 is not set
+# CONFIG_ARCH_Z80 is not set
+CONFIG_ARCH="arm"
+
+#
+# ARM Options
+#
+# CONFIG_ARCH_CHIP_A1X is not set
+# CONFIG_ARCH_CHIP_C5471 is not set
+# CONFIG_ARCH_CHIP_CALYPSO is not set
+# CONFIG_ARCH_CHIP_DM320 is not set
+# CONFIG_ARCH_CHIP_EFM32 is not set
+# CONFIG_ARCH_CHIP_IMX is not set
+# CONFIG_ARCH_CHIP_KINETIS is not set
+CONFIG_ARCH_CHIP_KL=y
+# CONFIG_ARCH_CHIP_LM is not set
+# CONFIG_ARCH_CHIP_TIVA is not set
+# CONFIG_ARCH_CHIP_LPC17XX is not set
+# CONFIG_ARCH_CHIP_LPC214X is not set
+# CONFIG_ARCH_CHIP_LPC2378 is not set
+# CONFIG_ARCH_CHIP_LPC31XX is not set
+# CONFIG_ARCH_CHIP_LPC43XX is not set
+# CONFIG_ARCH_CHIP_NUC1XX is not set
+# CONFIG_ARCH_CHIP_SAMA5 is not set
+# CONFIG_ARCH_CHIP_SAMD is not set
+# CONFIG_ARCH_CHIP_SAM34 is not set
+# CONFIG_ARCH_CHIP_STM32 is not set
+# CONFIG_ARCH_CHIP_STR71X is not set
+# CONFIG_ARCH_ARM7TDMI is not set
+# CONFIG_ARCH_ARM926EJS is not set
+# CONFIG_ARCH_ARM920T is not set
+CONFIG_ARCH_CORTEXM0=y
+# CONFIG_ARCH_CORTEXM3 is not set
+# CONFIG_ARCH_CORTEXM4 is not set
+# CONFIG_ARCH_CORTEXA5 is not set
+# CONFIG_ARCH_CORTEXA8 is not set
+CONFIG_ARCH_FAMILY="armv6-m"
+CONFIG_ARCH_CHIP="kl"
+CONFIG_ARCH_HAVE_CMNVECTOR=y
+# CONFIG_ARMV7M_CMNVECTOR is not set
+# CONFIG_ARCH_HAVE_FPU is not set
+
+#
+# ARMV6M Configuration Options
+#
+# CONFIG_ARMV6M_TOOLCHAIN_BUILDROOT is not set
+# CONFIG_ARMV6M_TOOLCHAIN_CODEREDL is not set
+# CONFIG_ARMV6M_TOOLCHAIN_CODESOURCERYL is not set
+CONFIG_ARMV6M_TOOLCHAIN_GNU_EABIL=y
+# CONFIG_GPIO_IRQ is not set
+
+#
+# Kinetis Configuration Options
+#
+# CONFIG_ARCH_CHIP_MKL25Z128 is not set
+CONFIG_ARCH_CHIP_MKL26Z128=y
+CONFIG_ARCH_FAMILY_KL2X=y
+
+#
+# Kinetis Peripheral Support
+#
+# CONFIG_KL_TRACE is not set
+# CONFIG_KL_FLEXBUS is not set
+CONFIG_KL_UART0=y
+# CONFIG_KL_UART1 is not set
+# CONFIG_KL_UART2 is not set
+# CONFIG_KL_FLEXCAN0 is not set
+# CONFIG_KL_FLEXCAN1 is not set
+# CONFIG_KL_SPI0 is not set
+# CONFIG_KL_SPI1 is not set
+# CONFIG_KL_SPI2 is not set
+# CONFIG_KL_I2C0 is not set
+# CONFIG_KL_I2C1 is not set
+# CONFIG_KL_I2S is not set
+# CONFIG_KL_DAC0 is not set
+# CONFIG_KL_DAC1 is not set
+# CONFIG_KL_ADC0 is not set
+# CONFIG_KL_ADC1 is not set
+# CONFIG_KL_CMP is not set
+# CONFIG_KL_VREF is not set
+CONFIG_KL_TPM0=y
+# CONFIG_KL_TPM1 is not set
+# CONFIG_KL_TPM2 is not set
+# CONFIG_KL_LPTIMER is not set
+# CONFIG_KL_RTC is not set
+# CONFIG_KL_EWM is not set
+# CONFIG_KL_CMT is not set
+# CONFIG_KL_USBOTG is not set
+# CONFIG_KL_USBDCD is not set
+# CONFIG_KL_LLWU is not set
+# CONFIG_KL_TSI is not set
+# CONFIG_KL_FTFL is not set
+# CONFIG_KL_DMA is not set
+# CONFIG_KL_CRC is not set
+# CONFIG_KL_PDB is not set
+# CONFIG_KL_PIT is not set
+CONFIG_KL_SYSTICK_CORECLK=y
+# CONFIG_KL_SYSTICK_CORECLK_DIV16 is not set
+CONFIG_KL_TPM0_PWM=y
+CONFIG_KL_TPM0_CHANNEL=0
+
+#
+# Kinetis GPIO Interrupt Configuration
+#
+
+#
+# Architecture Options
+#
+# CONFIG_ARCH_NOINTC is not set
+# CONFIG_ARCH_VECNOTIRQ is not set
+# CONFIG_ARCH_DMA is not set
+CONFIG_ARCH_HAVE_IRQPRIO=y
+# CONFIG_ARCH_L2CACHE is not set
+# CONFIG_ARCH_HAVE_COHERENT_DCACHE is not set
+# CONFIG_ARCH_HAVE_ADDRENV is not set
+# CONFIG_ARCH_NEED_ADDRENV_MAPPING is not set
+CONFIG_ARCH_HAVE_VFORK=y
+# CONFIG_ARCH_HAVE_MMU is not set
+# CONFIG_ARCH_HAVE_MPU is not set
+# CONFIG_ARCH_NAND_HWECC is not set
+# CONFIG_ARCH_HAVE_EXTCLK is not set
+# CONFIG_ARCH_IRQPRIO is not set
+CONFIG_ARCH_STACKDUMP=y
+# CONFIG_ENDIAN_BIG is not set
+# CONFIG_ARCH_IDLE_CUSTOM is not set
+# CONFIG_ARCH_HAVE_RAMFUNCS is not set
+# CONFIG_ARCH_HAVE_RAMVECTORS is not set
+
+#
+# Board Settings
+#
+CONFIG_BOARD_LOOPSPERMSEC=2988
+# CONFIG_ARCH_CALIBRATION is not set
+
+#
+# Interrupt options
+#
+CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
+CONFIG_ARCH_INTERRUPTSTACK=0
+# CONFIG_ARCH_HAVE_HIPRI_INTERRUPT is not set
+
+#
+# Boot options
+#
+# CONFIG_BOOT_RUNFROMEXTSRAM is not set
+CONFIG_BOOT_RUNFROMFLASH=y
+# CONFIG_BOOT_RUNFROMISRAM is not set
+# CONFIG_BOOT_RUNFROMSDRAM is not set
+# CONFIG_BOOT_COPYTORAM is not set
+
+#
+# Boot Memory Configuration
+#
+CONFIG_RAM_START=0x1FFFF000
+CONFIG_RAM_SIZE=16384
+# CONFIG_ARCH_HAVE_SDRAM is not set
+
+#
+# Board Selection
+#
+# CONFIG_ARCH_BOARD_FREEDOM_KL25Z is not set
+CONFIG_ARCH_BOARD_FREEDOM_KL26Z=y
+# CONFIG_ARCH_BOARD_CUSTOM is not set
+CONFIG_ARCH_BOARD="freedom-kl26z"
+
+#
+# Common Board Options
+#
+CONFIG_ARCH_HAVE_LEDS=y
+CONFIG_ARCH_LEDS=y
+CONFIG_NSH_MMCSDMINOR=0
+
+#
+# Board-Specific Options
+#
+
+#
+# RTOS Features
+#
+CONFIG_DISABLE_OS_API=y
+CONFIG_DISABLE_POSIX_TIMERS=y
+# CONFIG_DISABLE_PTHREAD is not set
+# CONFIG_DISABLE_SIGNALS is not set
+CONFIG_DISABLE_MQUEUE=y
+CONFIG_DISABLE_ENVIRON=y
+
+#
+# Clocks and Timers
+#
+CONFIG_USEC_PER_TICK=10000
+# CONFIG_SYSTEM_TIME64 is not set
+# CONFIG_CLOCK_MONOTONIC is not set
+# CONFIG_JULIAN_TIME is not set
+CONFIG_START_YEAR=2013
+CONFIG_START_MONTH=2
+CONFIG_START_DAY=26
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_WDOG_INTRESERVE=0
+CONFIG_PREALLOC_TIMERS=0
+
+#
+# Tasks and Scheduling
+#
+# CONFIG_INIT_NONE is not set
+CONFIG_INIT_ENTRYPOINT=y
+# CONFIG_INIT_FILEPATH is not set
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_RR_INTERVAL=200
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_MAX_TASKS=8
+# CONFIG_SCHED_HAVE_PARENT is not set
+CONFIG_SCHED_WAITPID=y
+
+#
+# Pthread Options
+#
+# CONFIG_MUTEX_TYPES is not set
+CONFIG_NPTHREAD_KEYS=0
+
+#
+# Performance Monitoring
+#
+# CONFIG_SCHED_CPULOAD is not set
+# CONFIG_SCHED_INSTRUMENTATION is not set
+
+#
+# Files and I/O
+#
+CONFIG_DEV_CONSOLE=y
+# CONFIG_FDCLONE_DISABLE is not set
+# CONFIG_FDCLONE_STDIO is not set
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_NFILE_DESCRIPTORS=6
+CONFIG_NFILE_STREAMS=6
+CONFIG_NAME_MAX=32
+# CONFIG_PRIORITY_INHERITANCE is not set
+
+#
+# RTOS hooks
+#
+# CONFIG_BOARD_INITIALIZE is not set
+# CONFIG_SCHED_STARTHOOK is not set
+# CONFIG_SCHED_ATEXIT is not set
+# CONFIG_SCHED_ONEXIT is not set
+
+#
+# Signal Numbers
+#
+CONFIG_SIG_SIGUSR1=1
+CONFIG_SIG_SIGUSR2=2
+CONFIG_SIG_SIGALARM=3
+CONFIG_SIG_SIGCONDTIMEDOUT=16
+
+#
+# Work Queue Support
+#
+# CONFIG_SCHED_WORKQUEUE is not set
+# CONFIG_SCHED_HPWORK is not set
+# CONFIG_SCHED_LPWORK is not set
+
+#
+# Stack and heap information
+#
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=1536
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=1536
+# CONFIG_LIB_SYSCALL is not set
+
+#
+# Device Drivers
+#
+CONFIG_DISABLE_POLL=y
+CONFIG_DEV_NULL=y
+# CONFIG_DEV_ZERO is not set
+# CONFIG_LOOP is not set
+
+#
+# Buffering
+#
+# CONFIG_DRVR_WRITEBUFFER is not set
+# CONFIG_DRVR_READAHEAD is not set
+# CONFIG_RAMDISK is not set
+# CONFIG_CAN is not set
+# CONFIG_ARCH_HAVE_PWM_PULSECOUNT is not set
+CONFIG_PWM=y
+# CONFIG_ARCH_HAVE_I2CRESET is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_I2S is not set
+# CONFIG_RTC is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_TIMER is not set
+# CONFIG_ANALOG is not set
+# CONFIG_AUDIO_DEVICES is not set
+# CONFIG_VIDEO_DEVICES is not set
+# CONFIG_BCH is not set
+# CONFIG_INPUT is not set
+# CONFIG_LCD is not set
+# CONFIG_MMCSD is not set
+# CONFIG_MTD is not set
+# CONFIG_EEPROM is not set
+# CONFIG_PIPES is not set
+# CONFIG_PM is not set
+# CONFIG_POWER is not set
+# CONFIG_SENSORS is not set
+# CONFIG_SERCOMM_CONSOLE is not set
+CONFIG_SERIAL=y
+# CONFIG_DEV_LOWCONSOLE is not set
+# CONFIG_16550_UART is not set
+# CONFIG_ARCH_HAVE_UART is not set
+CONFIG_ARCH_HAVE_UART0=y
+# CONFIG_ARCH_HAVE_UART1 is not set
+# CONFIG_ARCH_HAVE_UART2 is not set
+# CONFIG_ARCH_HAVE_UART3 is not set
+# CONFIG_ARCH_HAVE_UART4 is not set
+# CONFIG_ARCH_HAVE_UART5 is not set
+# CONFIG_ARCH_HAVE_UART6 is not set
+# CONFIG_ARCH_HAVE_UART7 is not set
+# CONFIG_ARCH_HAVE_UART8 is not set
+# CONFIG_ARCH_HAVE_SCI0 is not set
+# CONFIG_ARCH_HAVE_SCI1 is not set
+# CONFIG_ARCH_HAVE_USART0 is not set
+# CONFIG_ARCH_HAVE_USART1 is not set
+# CONFIG_ARCH_HAVE_USART2 is not set
+# CONFIG_ARCH_HAVE_USART3 is not set
+# CONFIG_ARCH_HAVE_USART4 is not set
+# CONFIG_ARCH_HAVE_USART5 is not set
+# CONFIG_ARCH_HAVE_USART6 is not set
+# CONFIG_ARCH_HAVE_USART7 is not set
+# CONFIG_ARCH_HAVE_USART8 is not set
+# CONFIG_ARCH_HAVE_OTHER_UART is not set
+
+#
+# USART Configuration
+#
+CONFIG_MCU_SERIAL=y
+CONFIG_STANDARD_SERIAL=y
+# CONFIG_SERIAL_IFLOWCONTROL is not set
+# CONFIG_SERIAL_OFLOWCONTROL is not set
+# CONFIG_ARCH_HAVE_SERIAL_TERMIOS is not set
+CONFIG_UART0_SERIAL_CONSOLE=y
+# CONFIG_OTHER_SERIAL_CONSOLE is not set
+# CONFIG_NO_SERIAL_CONSOLE is not set
+
+#
+# UART0 Configuration
+#
+CONFIG_UART0_RXBUFSIZE=256
+CONFIG_UART0_TXBUFSIZE=256
+CONFIG_UART0_BAUD=115200
+CONFIG_UART0_BITS=8
+CONFIG_UART0_PARITY=0
+CONFIG_UART0_2STOP=0
+# CONFIG_UART0_IFLOWCONTROL is not set
+# CONFIG_UART0_OFLOWCONTROL is not set
+# CONFIG_USBDEV is not set
+# CONFIG_USBHOST is not set
+# CONFIG_WIRELESS is not set
+
+#
+# System Logging Device Options
+#
+
+#
+# System Logging
+#
+# CONFIG_RAMLOG is not set
+# CONFIG_SYSLOG_CONSOLE is not set
+
+#
+# Networking Support
+#
+# CONFIG_ARCH_HAVE_NET is not set
+# CONFIG_ARCH_HAVE_PHY is not set
+# CONFIG_NET is not set
+
+#
+# Crypto API
+#
+# CONFIG_CRYPTO is not set
+
+#
+# File Systems
+#
+
+#
+# File system configuration
+#
+CONFIG_DISABLE_MOUNTPOINT=y
+CONFIG_DISABLE_PSEUDOFS_OPERATIONS=y
+# CONFIG_FS_READABLE is not set
+# CONFIG_FS_WRITABLE is not set
+# CONFIG_FS_NAMED_SEMAPHORES is not set
+# CONFIG_FS_RAMMAP is not set
+# CONFIG_FS_BINFS is not set
+# CONFIG_FS_PROCFS is not set
+
+#
+# System Logging
+#
+# CONFIG_SYSLOG is not set
+# CONFIG_SYSLOG_TIMESTAMP is not set
+
+#
+# Graphics Support
+#
+# CONFIG_NX is not set
+
+#
+# Memory Management
+#
+CONFIG_MM_SMALL=y
+CONFIG_MM_REGIONS=1
+# CONFIG_ARCH_HAVE_HEAP2 is not set
+# CONFIG_GRAN is not set
+
+#
+# Audio Support
+#
+# CONFIG_AUDIO is not set
+
+#
+# Binary Loader
+#
+# CONFIG_BINFMT_DISABLE is not set
+# CONFIG_NXFLAT is not set
+# CONFIG_ELF is not set
+CONFIG_BUILTIN=y
+# CONFIG_PIC is not set
+# CONFIG_SYMTAB_ORDEREDBYNAME is not set
+
+#
+# Library Routines
+#
+
+#
+# Standard C Library Options
+#
+CONFIG_STDIO_BUFFER_SIZE=0
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=0
+# CONFIG_LIBM is not set
+# CONFIG_NOPRINTF_FIELDWIDTH is not set
+# CONFIG_LIBC_FLOATINGPOINT is not set
+# CONFIG_LIBC_IOCTL_VARIADIC is not set
+CONFIG_LIB_RAND_ORDER=1
+# CONFIG_EOL_IS_CR is not set
+# CONFIG_EOL_IS_LF is not set
+# CONFIG_EOL_IS_BOTH_CRLF is not set
+CONFIG_EOL_IS_EITHER_CRLF=y
+# CONFIG_LIBC_EXECFUNCS is not set
+CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
+# CONFIG_LIBC_STRERROR is not set
+# CONFIG_LIBC_PERROR_STDOUT is not set
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_LIB_SENDFILE_BUFSIZE=512
+# CONFIG_ARCH_ROMGETC is not set
+# CONFIG_ARCH_OPTIMIZED_FUNCTIONS is not set
+
+#
+# Non-standard Library Support
+#
+# CONFIG_LIB_KBDCODEC is not set
+# CONFIG_LIB_SLCDCODEC is not set
+
+#
+# Basic CXX Support
+#
+# CONFIG_C99_BOOL8 is not set
+# CONFIG_HAVE_CXX is not set
+
+#
+# Application Configuration
+#
+
+#
+# Built-In Applications
+#
+CONFIG_BUILTIN_PROXY_STACKSIZE=1024
+
+#
+# Examples
+#
+# CONFIG_EXAMPLES_BUTTONS is not set
+# CONFIG_EXAMPLES_CAN is not set
+# CONFIG_EXAMPLES_CONFIGDATA is not set
+# CONFIG_EXAMPLES_CPUHOG is not set
+# CONFIG_EXAMPLES_DHCPD is not set
+# CONFIG_EXAMPLES_ELF is not set
+# CONFIG_EXAMPLES_FTPC is not set
+# CONFIG_EXAMPLES_FTPD is not set
+# CONFIG_EXAMPLES_HELLO is not set
+# CONFIG_EXAMPLES_HELLOXX is not set
+# CONFIG_EXAMPLES_JSON is not set
+# CONFIG_EXAMPLES_HIDKBD is not set
+# CONFIG_EXAMPLES_KEYPADTEST is not set
+# CONFIG_EXAMPLES_IGMP is not set
+# CONFIG_EXAMPLES_MM is not set
+# CONFIG_EXAMPLES_MODBUS is not set
+# CONFIG_EXAMPLES_MOUNT is not set
+# CONFIG_EXAMPLES_NRF24L01TERM is not set
+CONFIG_EXAMPLES_NSH=y
+# CONFIG_EXAMPLES_NULL is not set
+# CONFIG_EXAMPLES_NX is not set
+# CONFIG_EXAMPLES_NXTERM is not set
+# CONFIG_EXAMPLES_NXFFS is not set
+# CONFIG_EXAMPLES_NXFLAT is not set
+# CONFIG_EXAMPLES_NXHELLO is not set
+# CONFIG_EXAMPLES_NXIMAGE is not set
+# CONFIG_EXAMPLES_NXLINES is not set
+# CONFIG_EXAMPLES_NXTEXT is not set
+# CONFIG_EXAMPLES_OSTEST is not set
+# CONFIG_EXAMPLES_PIPE is not set
+CONFIG_EXAMPLES_PWM=y
+CONFIG_EXAMPLES_PWM_DEVPATH="/dev/pwm0"
+CONFIG_EXAMPLES_PWM_FREQUENCY=100
+CONFIG_EXAMPLES_PWM_DUTYPCT=50
+CONFIG_EXAMPLES_PWM_DURATION=5
+# CONFIG_EXAMPLES_POSIXSPAWN is not set
+# CONFIG_EXAMPLES_QENCODER is not set
+# CONFIG_EXAMPLES_RGMP is not set
+# CONFIG_EXAMPLES_ROMFS is not set
+# CONFIG_EXAMPLES_SENDMAIL is not set
+# CONFIG_EXAMPLES_SERIALBLASTER is not set
+# CONFIG_EXAMPLES_SERIALRX is not set
+# CONFIG_EXAMPLES_SERLOOP is not set
+# CONFIG_EXAMPLES_SLCD is not set
+# CONFIG_EXAMPLES_SMART_TEST is not set
+# CONFIG_EXAMPLES_SMART is not set
+# CONFIG_EXAMPLES_TCPECHO is not set
+# CONFIG_EXAMPLES_TELNETD is not set
+# CONFIG_EXAMPLES_THTTPD is not set
+# CONFIG_EXAMPLES_TIFF is not set
+# CONFIG_EXAMPLES_TOUCHSCREEN is not set
+# CONFIG_EXAMPLES_WEBSERVER is not set
+# CONFIG_EXAMPLES_USBSERIAL is not set
+# CONFIG_EXAMPLES_USBTERM is not set
+# CONFIG_EXAMPLES_WATCHDOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_TIFF is not set
+# CONFIG_GRAPHICS_TRAVELER is not set
+
+#
+# Interpreters
+#
+# CONFIG_INTERPRETERS_FICL is not set
+# CONFIG_INTERPRETERS_PCODE is not set
+# CONFIG_INTERPRETERS_MICROPYTHON is not set
+
+#
+# Network Utilities
+#
+
+#
+# Networking Utilities
+#
+# CONFIG_NETUTILS_CODECS is not set
+# CONFIG_NETUTILS_FTPC is not set
+# CONFIG_NETUTILS_FTPD is not set
+# CONFIG_NETUTILS_JSON is not set
+# CONFIG_NETUTILS_SMTP is not set
+# CONFIG_NETUTILS_TFTPC is not set
+# CONFIG_NETUTILS_THTTPD is not set
+# CONFIG_NETUTILS_NETLIB is not set
+# CONFIG_NETUTILS_WEBCLIENT is not set
+
+#
+# FreeModBus
+#
+# CONFIG_MODBUS is not set
+
+#
+# NSH Library
+#
+CONFIG_NSH_LIBRARY=y
+
+#
+# Command Line Configuration
+#
+CONFIG_NSH_READLINE=y
+# CONFIG_NSH_CLE is not set
+CONFIG_NSH_LINELEN=80
+CONFIG_NSH_DISABLE_SEMICOLON=y
+CONFIG_NSH_MAXARGUMENTS=6
+# CONFIG_NSH_ARGCAT is not set
+CONFIG_NSH_NESTDEPTH=3
+# CONFIG_NSH_DISABLEBG is not set
+CONFIG_NSH_BUILTIN_APPS=y
+
+#
+# Disable Individual commands
+#
+# CONFIG_NSH_DISABLE_ADDROUTE is not set
+# CONFIG_NSH_DISABLE_CAT is not set
+CONFIG_NSH_DISABLE_CD=y
+CONFIG_NSH_DISABLE_CP=y
+# CONFIG_NSH_DISABLE_CMP is not set
+CONFIG_NSH_DISABLE_DD=y
+CONFIG_NSH_DISABLE_DF=y
+# CONFIG_NSH_DISABLE_DELROUTE is not set
+# CONFIG_NSH_DISABLE_ECHO is not set
+# CONFIG_NSH_DISABLE_EXEC is not set
+# CONFIG_NSH_DISABLE_EXIT is not set
+# CONFIG_NSH_DISABLE_FREE is not set
+CONFIG_NSH_DISABLE_GET=y
+# CONFIG_NSH_DISABLE_HELP is not set
+# CONFIG_NSH_DISABLE_HEXDUMP is not set
+CONFIG_NSH_DISABLE_IFCONFIG=y
+# CONFIG_NSH_DISABLE_KILL is not set
+CONFIG_NSH_DISABLE_LOSETUP=y
+# CONFIG_NSH_DISABLE_LS is not set
+# CONFIG_NSH_DISABLE_MB is not set
+CONFIG_NSH_DISABLE_MKDIR=y
+# CONFIG_NSH_DISABLE_MKFIFO is not set
+CONFIG_NSH_DISABLE_MKRD=y
+# CONFIG_NSH_DISABLE_MH is not set
+CONFIG_NSH_DISABLE_MOUNT=y
+# CONFIG_NSH_DISABLE_MW is not set
+# CONFIG_NSH_DISABLE_PS is not set
+CONFIG_NSH_DISABLE_PUT=y
+# CONFIG_NSH_DISABLE_PWD is not set
+CONFIG_NSH_DISABLE_RM=y
+CONFIG_NSH_DISABLE_RMDIR=y
+# CONFIG_NSH_DISABLE_SET is not set
+# CONFIG_NSH_DISABLE_SH is not set
+# CONFIG_NSH_DISABLE_SLEEP is not set
+# CONFIG_NSH_DISABLE_TEST is not set
+CONFIG_NSH_DISABLE_UMOUNT=y
+# CONFIG_NSH_DISABLE_UNSET is not set
+# CONFIG_NSH_DISABLE_USLEEP is not set
+CONFIG_NSH_DISABLE_WGET=y
+# CONFIG_NSH_DISABLE_XD is not set
+
+#
+# Configure Command Options
+#
+CONFIG_NSH_CODECS_BUFSIZE=128
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_NSH_FILEIOSIZE=64
+
+#
+# Scripting Support
+#
+CONFIG_NSH_DISABLESCRIPT=y
+
+#
+# Console Configuration
+#
+CONFIG_NSH_CONSOLE=y
+# CONFIG_NSH_ALTCONDEV is not set
+# CONFIG_NSH_ARCHINIT is not set
+
+#
+# NxWidgets/NxWM
+#
+
+#
+# Platform-specific Support
+#
+# CONFIG_PLATFORM_CONFIGDATA is not set
+
+#
+# System Libraries and NSH Add-Ons
+#
+
+#
+# Custom Free Memory Command
+#
+# CONFIG_SYSTEM_FREE is not set
+
+#
+# EMACS-like Command Line Editor
+#
+# CONFIG_SYSTEM_CLE is not set
+
+#
+# CU Minimal Terminal
+#
+# CONFIG_SYSTEM_CUTERM is not set
+
+#
+# FLASH Program Installation
+#
+# CONFIG_SYSTEM_INSTALL is not set
+
+#
+# FLASH Erase-all Command
+#
+
+#
+# Intel HEX to binary conversion
+#
+# CONFIG_SYSTEM_HEX2BIN is not set
+
+#
+# I2C tool
+#
+
+#
+# INI File Parser
+#
+# CONFIG_SYSTEM_INIFILE is not set
+
+#
+# NxPlayer media player library / command Line
+#
+
+#
+# RAM test
+#
+# CONFIG_SYSTEM_RAMTEST is not set
+
+#
+# readline()
+#
+CONFIG_SYSTEM_READLINE=y
+CONFIG_READLINE_ECHO=y
+
+#
+# P-Code Support
+#
+
+#
+# PHY Tool
+#
+
+#
+# Power Off
+#
+# CONFIG_SYSTEM_POWEROFF is not set
+
+#
+# RAMTRON
+#
+# CONFIG_SYSTEM_RAMTRON is not set
+
+#
+# SD Card
+#
+# CONFIG_SYSTEM_SDCARD is not set
+
+#
+# Sudoku
+#
+# CONFIG_SYSTEM_SUDOKU is not set
+
+#
+# Sysinfo
+#
+# CONFIG_SYSTEM_SYSINFO is not set
+
+#
+# Temperature
+#
+
+#
+# VI Work-Alike Editor
+#
+# CONFIG_SYSTEM_VI is not set
+
+#
+# Stack Monitor
+#
+
+#
+# USB CDC/ACM Device Commands
+#
+
+#
+# USB Composite Device Commands
+#
+
+#
+# USB Mass Storage Device Commands
+#
+
+#
+# USB Monitor
+#
+
+#
+# Zmodem Commands
+#
+# CONFIG_SYSTEM_ZMODEM is not set
diff --git a/nuttx/configs/freedom-kl26z/nsh/setenv.sh b/nuttx/configs/freedom-kl26z/nsh/setenv.sh
new file mode 100755
index 000000000..03cc130da
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/nsh/setenv.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+# configs/freedom-kl26z/nsh/setenv.sh
+#
+#   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+if [ "$_" = "$0" ] ; then
+  echo "You must source this script, not run it!" 1>&2
+  exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+  echo "This script must be executed from the top-level NuttX build directory"
+  exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+  export PATH_ORIG="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+#export TOOLCHAIN_BIN="/cygdrive/c/Users/MyName/MentorGraphics/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
+
+# These are the Cygwin paths to the locations where I installed the Atollic
+# toolchain under windows.  You will also have to edit this if you install
+# the Atollic toolchain in any other location.  /usr/bin is added before
+# the Atollic bin path because there is are binaries named gcc.exe and g++.exe
+# at those locations as well.
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for ARM Pro 2.3.0/ARMTools/bin"
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for STMicroelectronics STM32 Lite 2.3.0/ARMTools/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/freedom-kl26z/scripts/ld.script b/nuttx/configs/freedom-kl26z/scripts/ld.script
new file mode 100644
index 000000000..694bc1e2b
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/scripts/ld.script
@@ -0,0 +1,134 @@
+/****************************************************************************
+ * configs/freedom-kl26z/scripts/ld.script
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* The MKL26Z128 has 128Kb of FLASH beginning at address 0x00000000 and
+ * 16Kb of SRAM at address 0x1ffff000.
+ */
+
+MEMORY
+{
+	vectflash (rx)  : ORIGIN = 0x00000000, LENGTH = 0x00c0
+	cfmprotect (rx) : ORIGIN = 0x00000400, LENGTH = 0x10
+	progflash (rx)  : ORIGIN = 0x00000410, LENGTH = 128K - 0x410
+	datasram (rwx)  : ORIGIN = 0x1ffff000, LENGTH = 16K
+}
+
+OUTPUT_ARCH(arm)
+EXTERN(_vectors)
+EXTERN(_cfmconfig)
+ENTRY(_stext)
+SECTIONS
+{
+	.vectors : {
+		_svectors = ABSOLUTE(.);
+		*(.vectors)
+		_evectors = ABSOLUTE(.);
+	} > vectflash
+
+	.cfmprotect : {
+		*(.cfmconfig)
+	} > cfmprotect
+
+	.text : {
+		_stext = ABSOLUTE(.);
+		*(.text .text.*)
+		*(.fixup)
+		*(.gnu.warning)
+		*(.rodata .rodata.*)
+		*(.gnu.linkonce.t.*)
+		*(.glue_7)
+		*(.glue_7t)
+		*(.got)
+		*(.gcc_except_table)
+		*(.gnu.linkonce.r.*)
+		_etext = ABSOLUTE(.);
+	} > progflash
+
+	.init_section : {
+		_sinit = ABSOLUTE(.);
+		*(.init_array .init_array.*)
+		_einit = ABSOLUTE(.);
+	} > progflash
+
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} > progflash
+
+	__exidx_start = ABSOLUTE(.);
+	.ARM.exidx : {
+		*(.ARM.exidx*)
+	} > progflash
+	__exidx_end = ABSOLUTE(.);
+
+	.data : {
+		_sdata = ABSOLUTE(.);
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		CONSTRUCTORS
+		_edata = ABSOLUTE(.);
+	} > datasram AT > progflash
+
+	_eronly = LOADADDR(.data);
+
+	.ramfunc ALIGN(4): {
+		_sramfuncs = ABSOLUTE(.);
+		*(.ramfunc  .ramfunc.*)
+		_eramfuncs = ABSOLUTE(.);
+	} > datasram AT > progflash
+
+	_framfuncs = LOADADDR(.ramfunc);
+
+	.bss : {
+		_sbss = ABSOLUTE(.);
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		_ebss = ABSOLUTE(.);
+	} > datasram
+
+	/* Stabs debugging sections. */
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_info 0 : { *(.debug_info) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+	.debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/nuttx/configs/freedom-kl26z/src/.gitignore b/nuttx/configs/freedom-kl26z/src/.gitignore
new file mode 100644
index 000000000..726d936e1
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/.gitignore
@@ -0,0 +1,2 @@
+/.depend
+/Make.dep
diff --git a/nuttx/configs/freedom-kl26z/src/Makefile b/nuttx/configs/freedom-kl26z/src/Makefile
new file mode 100644
index 000000000..c0b3c9507
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/Makefile
@@ -0,0 +1,112 @@
+############################################################################
+# configs/freedom-kl26z/src/Makefile
+#
+#   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+CFLAGS += -I$(TOPDIR)/sched
+
+ASRCS =
+AOBJS = $(ASRCS:.S=$(OBJEXT))
+
+CSRCS = kl_boardinitialize.c
+
+ifeq ($(CONFIG_NSH_ARCHINIT),y)
+CSRCS += kl_nsh.c
+endif
+
+ifeq ($(CONFIG_KL_TSI),y)
+CSRCS += kl_tsi.c
+endif
+
+ifeq ($(CONFIG_KL_SPI0),y)
+CSRCS += kl_spi.c
+else
+ifeq ($(CONFIG_KL_SPI1),y)
+CSRCS += kl_spi.c
+endif
+endif
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += kl_led.c
+endif
+
+ifeq ($(CONFIG_PWM),y)
+CSRCS += kl_pwm.c
+endif
+
+COBJS = $(CSRCS:.c=$(OBJEXT))
+
+SRCS = $(ASRCS) $(CSRCS)
+OBJS = $(AOBJS) $(COBJS)
+
+ARCH_SRCDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+  CFLAGS += -I$(ARCH_SRCDIR)\chip -I$(ARCH_SRCDIR)\common -I$(ARCH_SRCDIR)\armv7-m
+else
+ifeq ($(WINTOOL),y)
+  CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+			-I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+			-I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
+else
+  CFLAGS += -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/armv7-m
+endif
+endif
+
+all: libboard$(LIBEXT)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+libboard$(LIBEXT): $(OBJS)
+	$(call ARCHIVE, $@, $(OBJS))
+
+.depend: Makefile $(SRCS)
+	$(Q) $(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	$(Q) touch $@
+
+depend: .depend
+
+clean:
+	$(call DELFILE, libboard$(LIBEXT))
+	$(call CLEAN)
+
+distclean: clean
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
+
+-include Make.dep
diff --git a/nuttx/configs/freedom-kl26z/src/freedom-kl26z.h b/nuttx/configs/freedom-kl26z/src/freedom-kl26z.h
new file mode 100644
index 000000000..6639ea106
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/freedom-kl26z.h
@@ -0,0 +1,140 @@
+/****************************************************************************************************
+ * configs/freedom-kl26z/src/freedom-kl26z.h
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************************************/
+
+#ifndef __CONFIGS_FREEDOM_KL26Z_SRC_FREEDOM_KL26Z_H
+#define __CONFIGS_FREEDOM_KL26Z_SRC_FREEDOM_KL26Z_H
+
+/****************************************************************************************************
+ * Included Files
+ ****************************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+#include <stdint.h>
+
+/****************************************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************************************/
+/* Configuration ************************************************************************************/
+
+/* Freedom KL26Z GPIOs ******************************************************************************/
+/* The Freedom KL26Z has a single RGB LED driven by the KL26Z as follows:
+ *
+ *   ------------- --------
+ *   RGB LED       KL26Z128
+ *   ------------- --------
+ *   Red Cathode   PTE29
+ *   Green Cathode PTE31
+ *   Blue Cathode  PTD5
+ *
+ * NOTE: PTD5 is also connected to the I/O header on J2 pin 12 (also known as D13).
+ *
+ * If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board the
+ * Freedom KL26Z.  The following definitions describe how NuttX controls the LEDs:
+ *
+ *   SYMBOL                Meaning                 LED state
+ *                                                 Initially all LED is OFF
+ *   -------------------  -----------------------  --------------------------
+ *   LED_STARTED          NuttX has been started
+ *   LED_HEAPALLOCATE     Heap has been allocated
+ *   LED_IRQSENABLED      Interrupts enabled
+ *   LED_STACKCREATED     Idle stack created
+ *   LED_INIRQ            In an interrupt
+ *   LED_SIGNAL           In a signal handler
+ *   LED_ASSERTION        An assertion failed
+ *   LED_PANIC            The system has crashed
+ *   LED_IDLE             K26Z1XX is in sleep mode  (Optional, not used)
+ */
+
+#define GPIO_LED_R (GPIO_OUTPUT | GPIO_OUTPUT_ONE | PIN_PORTE | PIN29)
+#define GPIO_LED_G (GPIO_OUTPUT | GPIO_OUTPUT_ONE | PIN_PORTE | PIN31)
+#define GPIO_LED_B (GPIO_OUTPUT | GPIO_OUTPUT_ONE | PIN_PORTD | PIN5)
+
+/* Button definitions *******************************************************************************/
+/* The Freedom KL26Z has no buttons */
+
+/* Chip selects ************************************************************************************/
+
+/****************************************************************************************************
+ * Public Types
+ ****************************************************************************************************/
+
+/****************************************************************************************************
+ * Public data
+ ****************************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************************************
+ * Public Functions
+ ****************************************************************************************************/
+
+/****************************************************************************************************
+ * Name: kl_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the Freedom KL26Z board.
+ *
+ ****************************************************************************************************/
+
+void weak_function kl_spiinitialize(void);
+
+/****************************************************************************************************
+ * Name: kl_usbinitialize
+ *
+ * Description:
+ *   Called from kl_usbinitialize very early in inialization to setup USB-related
+ *   GPIO pins for the Freedom KL26Z board.
+ *
+ ****************************************************************************************************/
+
+#ifdef CONFIG_STM32_USB
+void weak_function kl_usbinitialize(void);
+#endif
+
+/****************************************************************************************************
+ * Name: kl_ledinit
+ *
+ * Description:
+ *   Initialize the on-board LED
+ *
+ ****************************************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void kl_ledinit(void);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_FREEDOM_KL26Z_SRC_FREEDOM_KL26Z_H */
diff --git a/nuttx/configs/freedom-kl26z/src/kl_boardinitialize.c b/nuttx/configs/freedom-kl26z/src/kl_boardinitialize.c
new file mode 100644
index 000000000..c3e176f7a
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/kl_boardinitialize.c
@@ -0,0 +1,129 @@
+/************************************************************************************
+ * configs/freedom-kl26z/src/up_boot.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "freedom-kl26z.h"
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kl_boardinitialize
+ *
+ * Description:
+ *   All K25Z architectures must provide the following entry point.  This entry point
+ *   is called early in the initialization -- after all memory has been configured
+ *   and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+void kl_boardinitialize(void)
+{
+  /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak function
+   * kl_spiinitialize() has been brought into the link.
+   */
+
+#if defined(CONFIG_KL_SPI0) || defined(CONFIG_KL_SPI1)
+  if (kl_spiinitialize)
+    {
+      kl_spiinitialize();
+    }
+#endif
+
+  /* Initialize USB if the 1) USB device controller is in the configuration
+   * and 2) disabled, and 3) the weak function kl_usbinitialize() has been
+   * brought into the build. Presumably either CONFIG_USBHOST or
+   * CONFIG_USBDEV is also selected.
+   */
+
+#ifdef CONFIG_KL_USBOTG
+  if (kl_usbinitialize)
+    {
+      kl_usbinitialize();
+    }
+#endif
+
+  /* Configure on-board LED if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  kl_ledinit();
+#endif
+}
+
+/****************************************************************************
+ * Name: board_initialize
+ *
+ * Description:
+ *   If CONFIG_BOARD_INITIALIZE is selected, then an additional
+ *   initialization call will be performed in the boot-up sequence to a
+ *   function called board_initialize().  board_initialize() will be
+ *   called immediately after up_intitialize() is called and just before the
+ *   initial application is started.  This additional initialization phase
+ *   may be used, for example, to initialize board-specific device drivers.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_INITIALIZE
+void board_initialize(void)
+{
+  /* Perform NSH initialization here instead of from the NSH.  This
+   * alternative NSH initialization is necessary when NSH is ran in user-space
+   * but the initialization function must run in kernel space.
+   */
+
+#if defined(CONFIG_NSH_LIBRARY) && !defined(CONFIG_NSH_ARCHINIT)
+  (void)nsh_archinitialize();
+#endif
+}
+#endif
diff --git a/nuttx/configs/freedom-kl26z/src/kl_led.c b/nuttx/configs/freedom-kl26z/src/kl_led.c
new file mode 100644
index 000000000..67846430a
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/kl_led.c
@@ -0,0 +1,168 @@
+/****************************************************************************
+ * configs/freedom-kl26z/src/kl_led.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+/* The Freedom KL26Z has a single RGB LED driven by the KL26Z as follows:
+ *
+ *   ------------- --------
+ *   RGB LED       KL26Z128
+ *   ------------- --------
+ *   Red Cathode   PTE29
+ *   Green Cathode PTE31
+ *   Blue Cathode  PTD5
+ *
+ * If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board the
+ * Freedom KL26Z.  The following definitions describe how NuttX controls the LEDs:
+ *
+ *   SYMBOL                Meaning                 LED state
+ *                                                 Initially all LED is OFF
+ *   -------------------  -----------------------  --------------------------
+ *   LED_STARTED          NuttX has been started   R=OFF G=OFF B=OFF
+ *   LED_HEAPALLOCATE     Heap has been allocated  (no change)
+ *   LED_IRQSENABLED      Interrupts enabled       (no change)
+ *   LED_STACKCREATED     Idle stack created       R=OFF G=OFF B=ON
+ *   LED_INIRQ            In an interrupt          (no change)
+ *   LED_SIGNAL           In a signal handler      (no change)
+ *   LED_ASSERTION        An assertion failed      (no change)
+ *   LED_PANIC            The system has crashed   R=FLASHING G=OFF B=OFF
+ *   LED_IDLE             K26Z1XX is in sleep mode (Optional, not used)
+ */
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "kl_gpio.h"
+#include "freedom-kl26z.h"
+
+#ifdef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
+ * with CONFIG_DEBUG_VERBOSE too)
+ */
+
+#ifdef CONFIG_DEBUG_LEDS
+#  define leddbg  lldbg
+#  ifdef CONFIG_DEBUG_VERBOSE
+#    define ledvdbg lldbg
+#  else
+#    define ledvdbg(x...)
+#  endif
+#else
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#if defined(CONFIG_DEBUG_VERBOSE) && defined(CONFIG_DEBUG_LEDS)
+#  define led_dumpgpio(m) kl_dumpgpio(GPIO_LED_B, m)
+#else
+#  define led_dumpgpio(m)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: kl_ledinit
+ *
+ * Description:
+ *   Initialize the on-board LED
+ *
+ ****************************************************************************/
+
+void kl_ledinit(void)
+{
+  kl_configgpio(GPIO_LED_R);
+  kl_configgpio(GPIO_LED_G);
+  kl_configgpio(GPIO_LED_B);
+}
+
+/****************************************************************************
+ * Name: board_led_on
+ ****************************************************************************/
+
+void board_led_on(int led)
+{
+  if (led == LED_STACKCREATED)
+    {
+      kl_gpiowrite(GPIO_LED_R, true);
+      kl_gpiowrite(GPIO_LED_G, true);
+      kl_gpiowrite(GPIO_LED_B, false);
+    }
+  else if (led == LED_PANIC)
+    {
+      kl_gpiowrite(GPIO_LED_R, false);
+      kl_gpiowrite(GPIO_LED_G, true);
+      kl_gpiowrite(GPIO_LED_B, true);
+    }
+}
+
+/****************************************************************************
+ * Name: board_led_off
+ ****************************************************************************/
+
+void board_led_off(int led)
+{
+  if (led == LED_PANIC)
+    {
+      kl_gpiowrite(GPIO_LED_R, true);
+      kl_gpiowrite(GPIO_LED_G, true);
+      kl_gpiowrite(GPIO_LED_B, true);
+    }
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/nuttx/configs/freedom-kl26z/src/kl_nsh.c b/nuttx/configs/freedom-kl26z/src/kl_nsh.c
new file mode 100644
index 000000000..3db0871e9
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/kl_nsh.c
@@ -0,0 +1,76 @@
+/****************************************************************************
+ * config/stm32f4discovery/src/kl_nsh.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <syslog.h>
+
+#ifdef CONFIG_NSH_LIBRARY
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ *   CONFIG_NSH_ARCHINIT=y :
+ *     Called from the NSH library
+ *
+ *   CONFIG_BOARD_INITIALIZE=y, CONFIG_NSH_LIBRARY=y, &&
+ *   CONFIG_NSH_ARCHINIT=n :
+ *     Called from board_initialize().
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+  return OK;
+}
+
+#endif /* CONFIG_NSH_LIBRARY */
diff --git a/nuttx/configs/freedom-kl26z/src/kl_pwm.c b/nuttx/configs/freedom-kl26z/src/kl_pwm.c
new file mode 100644
index 000000000..a0e4472bb
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/kl_pwm.c
@@ -0,0 +1,120 @@
+/************************************************************************************
+ * configs/freedom-kl26z/src/kl_pwm.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *           Alan Carvalho de Assis <acassis@gmail.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.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/pwm.h>
+#include <sys/types.h>
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "kl_pwm.h"
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* PWM
+ *
+ * The Kinetis Freedom board provides a LED on GPIO.
+ */
+
+#ifdef CONFIG_PWM
+
+extern struct pwm_lowerhalf_s *kl_pwminitialize(int timer);
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pwm_devinit
+ *
+ * Description:
+ *   All Kinetis KL architectures must provide the following interface to work with
+ *   examples/pwm.
+ *
+ ************************************************************************************/
+
+int pwm_devinit(void)
+{
+  static bool initialized = false;
+  struct pwm_lowerhalf_s *pwm;
+  int ret;
+
+  /* Have we already initialized? */
+
+  if (!initialized)
+    {
+      /* Call kl_pwminitialize() to get an instance of the PWM interface */
+
+      pwm = kl_pwminitialize(0);
+      if (!pwm)
+        {
+          adbg("Failed to get the KL26 PWM lower half\n");
+          return -ENODEV;
+        }
+
+      /* Register the PWM driver at "/dev/pwm0" */
+
+      ret = pwm_register("/dev/pwm0", pwm);
+      if (ret < 0)
+        {
+          adbg("pwm_register failed: %d\n", ret);
+          return ret;
+        }
+
+      /* Now we are initialized */
+
+      initialized = true;
+    }
+
+  return OK;
+}
+
+#endif /* CONFIG_PWM */
diff --git a/nuttx/configs/freedom-kl26z/src/kl_spi.c b/nuttx/configs/freedom-kl26z/src/kl_spi.c
new file mode 100644
index 000000000..a510f18e9
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/kl_spi.c
@@ -0,0 +1,233 @@
+/****************************************************************************
+ * configs/freedom-kl26z/src/kl_spi.c
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/spi/spi.h>
+
+#include "kl_gpio.h"
+#include "kl_spi.h"
+#include "freedom-kl26z.h"
+
+#if defined(CONFIG_KL_SPI0) || defined(CONFIG_KL_SPI1)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#ifdef CONFIG_DEBUG_SPI
+#  define spidbg  lldbg
+#  ifdef CONFIG_DEBUG_VERBOSE
+#    define spivdbg lldbg
+#  else
+#    define spivdbg(x...)
+#  endif
+#else
+#  define spidbg(x...)
+#  define spivdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: kl_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the FRDM-KL26Z board.
+ *
+ ****************************************************************************/
+
+void weak_function kl_spiinitialize(void)
+{
+  /* Configure SPI0 chip selects */
+
+#ifdef CONFIG_KL_SPI0
+#endif
+
+  /* Configure SPI1 chip selects */
+
+#ifdef CONFIG_KL_SPI1
+#endif
+}
+
+/****************************************************************************
+ * Name:  kl_spi[n]select, kl_spi[n]status, and kl_spi[n]cmddata
+ *
+ * Description:
+ *   These external functions must be provided by board-specific logic.  They
+ *   are implementations of the select, status, and cmddata methods of the SPI
+ *   interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h). All
+ *   other methods including up_spiinitialize()) are provided by common
+ *   Kinetis logic.  To use this common SPI logic on your board:
+ *
+ *   1. Provide logic in kl_boardinitialize() to configure SPI chip select
+ *      pins.
+ *   2. Provide kl_spi[n]select() and kl_spi[n]status() functions
+ *      in your board-specific logic.  These functions will perform chip
+ *      selection and status operations using GPIOs in the way your board
+ *      is configured.
+ *   2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
+ *      kl_spi[n]cmddata() functions in your board-specific logic.  These
+ *      functions will perform cmd/data selection operations using GPIOs in
+ *      the way your board is configured.
+ *   3. Add a call to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   4. The handle returned by up_spiinitialize() may then be used to bind
+ *      the SPI driver to higher level logic (e.g., calling
+ *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ *      the SPI MMC/SD driver).
+ *
+ ****************************************************************************/
+/****************************************************************************
+ * Name: kl_spi[n]select
+ *
+ * Description:
+ *   PIO chip select pins may be programmed by the board specific logic in
+ *   one of two different ways.  First, the pins may be programmed as SPI
+ *   peripherals.  In that case, the pins are completely controlled by the
+ *   SPI driver.  This method still needs to be provided, but it may be only
+ *   a stub.
+ *
+ *   An alternative way to program the PIO chip select pins is as a normal
+ *   GPIO output.  In that case, the automatic control of the CS pins is
+ *   bypassed and this function must provide control of the chip select.
+ *   NOTE:  In this case, the GPIO output pin does *not* have to be the
+ *   same as the NPCS pin normal associated with the chip select number.
+ *
+ * Input Parameters:
+ *   devid - Identifies the (logical) device
+ *   selected - TRUE:Select the device, FALSE:De-select the device
+ *
+ * Returned Values:
+ *   None
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_KL_SPI0
+void kl_spi0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid,
+                   bool selected)
+{
+  spivdbg("devid: %d CS: %s\n",
+           (int)devid, selected ? "assert" : "de-assert");
+}
+#endif
+
+#ifdef CONFIG_KL_SPI1
+void kl_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid,
+                   bool selected)
+{
+  spivdbg("devid: %d CS: %s\n",
+           (int)devid, selected ? "assert" : "de-assert");
+}
+#endif
+
+/****************************************************************************
+ * Name: kl_spi[n]status
+ *
+ * Description:
+ *   Return status information associated with the SPI device.
+ *
+ * Input Parameters:
+ *   devid - Identifies the (logical) device
+ *
+ * Returned Values:
+ *   Bit-encoded SPI status (see include/nuttx/spi/spi.h.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_KL_SPI0
+uint8_t kl_spi0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  return 0;
+}
+#endif
+
+#ifdef CONFIG_KL_SPI1
+uint8_t kl_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  return 0;
+}
+#endif
+
+/****************************************************************************
+ * Name: kl_spi[n]cmddata
+ *
+ * Description:
+ *   Some SPI interfaces, particularly with LCDs, and an auxiliary 9th data
+ *   input that determines where the other 8 data bits represent command or
+ *   data.  These interfaces control that CMD/DATA GPIO output
+ *
+ * Input Parameters:
+ *   devid - Identifies the (logical) device
+ *   cmd - Determines where command or data should be selected.
+ *
+ * Returned Values:
+ *   Bit-encoded SPI status (see include/nuttx/spi/spi.h.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SPI_CMDDATA
+#ifdef CONFIG_KL_SPI0
+int kl_spi0cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+  return 0;
+}
+#endif
+
+#ifdef CONFIG_KL_SPI1
+int kl_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+  return 0;
+}
+#endif
+#endif
+
+#endif /* CONFIG_KL_SPI */
diff --git a/nuttx/configs/freedom-kl26z/src/kl_tsi.c b/nuttx/configs/freedom-kl26z/src/kl_tsi.c
new file mode 100644
index 000000000..95392082e
--- /dev/null
+++ b/nuttx/configs/freedom-kl26z/src/kl_tsi.c
@@ -0,0 +1,261 @@
+/****************************************************************************
+ * configs/freedom-kl26z/src/kl_tsi.c
+ *
+ *   Copyright (C) 2013 Alan Carvalho de Assis
+ *   Author: Alan Carvalho de Assis <acassis@gmail.com>
+ *           with adaptations from Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Reference: https://community.freescale.com/community/
+ *            the-embedded-beat/blog/2012/10/15/
+ *            using-the-touch-interface-on-the-freescale-freedom-development-platform
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/fs/fs.h>
+
+#include "up_arch.h"
+#include "kl_gpio.h"
+#include "chip/kl_tsi.h"
+#include "chip/kl_pinmux.h"
+#include "chip/kl_sim.h"
+
+#ifdef CONFIG_KL_TSI
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* The touchpad on the Freedom KL26Z board connects to the MCU via:
+ *
+ *   PTB16 TWI0_CH9
+ *   PTB17 TSI0_CH10
+ */
+
+#define NSENSORS 2
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static void    tsi_calibrate(void);
+static ssize_t tsi_read(FAR struct file *filep, FAR char *buffer, size_t buflen);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static uint16_t g_defcap[NSENSORS];    /* Default capacitance for each sensor */
+static uint16_t g_currdelta = 0;       /* Current delta for the current button */
+static uint8_t  g_channel = 0;         /* Current g_channel */
+
+/* Channel assigned to each sensor */
+
+static uint8_t const g_chsensor[NSENSORS] = { 9, 10 };
+
+/* Character driver operations */
+
+static const struct file_operations tsi_ops =
+{
+  0,           /* open */
+  0,           /* close */
+  tsi_read,    /* read */
+  0,           /* write */
+  0,           /* seek */
+  0,           /* ioctl */
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tsi_calibrate
+ ****************************************************************************/
+
+static void tsi_calibrate(void)
+{
+  uint32_t regval;
+  int i;
+
+  for (i = 0; i < NSENSORS; i++)
+    {
+      /* Clear end of scan flag */
+
+      regval  = getreg32(KL_TSI_GENCS);
+      regval |= TSI_GENCS_EOSF;
+      putreg32(regval, KL_TSI_GENCS);
+
+      /* Scan the next electrode */
+
+      regval = TSI_DATA_TSICH(g_chsensor[i]);
+      putreg32(regval, KL_TSI_DATA);
+
+      regval |= TSI_DATA_SWTS;
+      putreg32(regval, KL_TSI_DATA);
+
+      /* Wait until the conversion is done */
+
+      while (!(getreg32(KL_TSI_GENCS) & TSI_GENCS_EOSF));
+
+      g_defcap[i] = getreg32(KL_TSI_DATA) & TSI_DATA_TSICNT_MASK;
+      ivdbg("Sensor %d = %d\n", i+1, g_defcap[i]);
+    }
+}
+
+/****************************************************************************
+ * Name: tsi_read
+ ****************************************************************************/
+
+static ssize_t tsi_read(FAR struct file *filep, FAR char *buf, size_t buflen)
+{
+  static int deltacap = 0;
+  uint32_t regval;
+
+  if (buf == NULL || buflen < 1)
+    {
+      /* Well... nothing to do */
+
+      return -EINVAL;
+    }
+
+  deltacap = 0;
+
+  /* Clear end of scan flag */
+
+  regval  = getreg32(KL_TSI_GENCS);
+  regval |= TSI_GENCS_EOSF;
+  putreg32(regval, KL_TSI_GENCS);
+
+  /* Scan the next electrode */
+
+  regval = TSI_DATA_TSICH(g_chsensor[g_channel]);
+  putreg32(regval, KL_TSI_DATA);
+
+  regval |= TSI_DATA_SWTS;
+  putreg32(regval, KL_TSI_DATA);
+
+  /* Wait until the conversion is done*/
+
+  while (!(getreg32(KL_TSI_GENCS) & TSI_GENCS_EOSF));
+
+  /* Compute delta using calibration reference counts */
+
+  deltacap  = getreg32(KL_TSI_DATA) & TSI_DATA_TSICNT_MASK;
+  deltacap -= g_defcap[g_channel];
+
+  if (deltacap < 0)
+    {
+      deltacap = 0;
+    }
+
+  g_currdelta = (uint16_t)deltacap;
+
+  ivdbg("Delta for g_channel %d = %d\n", g_channel, g_currdelta);
+
+  buf[0] = g_currdelta & 0xff;
+  buf[1] = (g_currdelta & 0xff00) >> 8;
+  buf[2] = g_channel;
+
+  /* Increment the channel index to sample the next sensor on the next timer
+   * that read() is called.
+   */
+
+  g_channel++;
+  if (g_channel >= NSENSORS)
+    {
+      g_channel = 0;
+    }
+
+  return 3;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: kl_tsi_initialize
+ *
+ * Description:
+ *   Initialize the TSI hardware and interface for the sliders on board the
+ *   Freedom KL26Z board.  Register a character driver at /dev/tsi that may
+ *   be used to read from each sensor.
+ *
+ ****************************************************************************/
+
+void kl_tsi_initialize(void)
+{
+  uint32_t regval;
+
+  /* Enable access to the TSI module */
+
+  regval = getreg32(KL_SIM_SCGC5);
+  regval |= SIM_SCGC5_TSI;
+  putreg32(regval, KL_SIM_SCGC5);
+
+  /* Configure PINs used on TSI */
+
+  kl_configgpio(PIN_TSI0_CH9);
+  kl_configgpio(PIN_TSI0_CH10);
+
+  /* Configure TSI parameter */
+
+  regval = getreg32(KL_TSI_GENCS);
+  regval |= TSI_GENCS_MODE_CAPSENSING | TSI_GENCS_REFCHRG_8UA |
+            TSI_GENCS_DVOLT_1p03V | TSI_GENCS_EXTCHRG_64A |
+            TSI_GENCS_PS_DIV16 | TSI_GENCS_NSCN_TIMES(12) | TSI_GENCS_STPE;
+  putreg32(regval, KL_TSI_GENCS);
+
+  /* Only after setting TSI we should enable it */
+
+  regval  = getreg32(KL_TSI_GENCS);
+  regval |= TSI_GENCS_TSIEN;
+  putreg32(regval, KL_TSI_GENCS);
+
+  /* Calibrate it before to use */
+
+  tsi_calibrate();
+
+  /* And finally register the TSI character driver */
+
+  (void)register_driver("/dev/tsi", &tsi_ops, 0444, NULL);
+}
+
+#endif /* CONFIG_KL_TSI */