Add basic board support for the TM4C123G Launchpad

configs/Kconfig

@@ -737,6 +737,15 @@ config ARCH_BOARD_TEENSY
 		developed by http://pjrc.com/teensy/.  The Teensy++ 2.0 is based
 		on an Atmel AT90USB1286 MCU.
 
+config ARCH_BOARD_TM4C123G_LAUNCHPAD
+	bool "Tiva TM4C124G LaunchPad"
+	depends on ARCH_CHIP_TM4C123GH6ZRB
+	select ARCH_HAVE_LEDS
+	select ARCH_HAVE_BUTTONS
+	select ARCH_HAVE_IRQBUTTONS
+	---help---
+		Tiva TM4C123G LaunchPad.
+
 config ARCH_BOARD_TWR_K60N512
 	bool "FreeScale TWR-K60N512d evelopment board"
 	depends on ARCH_CHIP_MK60N512VMD100
@@ -958,6 +967,7 @@ config ARCH_BOARD
 	default "mikroe-stm32f4"      if ARCH_BOARD_MIKROE_STM32F4
 	default "sure-pic32mx"        if ARCH_BOARD_SUREPIC32MX
 	default "teensy"              if ARCH_BOARD_TEENSY
+	default "tm4c123g-launchpad"  if ARCH_BOARD_TM4C123G_LAUNCHPAD
 	default "twr-k60n512"         if ARCH_BOARD_TWR_K60N512
 	default "ubw32"               if ARCH_BOARD_UBW32
 	default "us7032evb1"          if ARCH_BOARD_US7032EVB1
@@ -1240,6 +1250,9 @@ endif
 if ARCH_BOARD_TEENSY
 source "configs/teensy/Kconfig"
 endif
+if ARCH_BOARD_TM4C123G_LAUNCHPAD
+source "configs/tm4c123g-launchpad/Kconfig"
+endif
 if ARCH_BOARD_TWR_K60N512
 source "configs/twr-k60n512/Kconfig"
 endif

configs/README.txt

@@ -268,7 +268,7 @@ configs/lm3s8962-ek
 configs/lm4f120-launchpad
   This is the port of NuttX to the Stellaris LM4F120 LaunchPad.  The
   Stellaris® LM4F120 LaunchPad Evaluation Board is a low-cost evaluation
-  platform for ARM® Cortex™-M4F-based microcontrollers from Texas\
+  platform for ARM® Cortex™-M4F-based microcontrollers from Texas
   Instruments.
 
 configs/lpcxpresso-lpc1768
@@ -543,6 +543,12 @@ configs/teensy
   developed by http://pjrc.com/teensy/.  The Teensy++ 2.0 is based
   on an Atmel AT90USB1286 MCU.
 
+configs/tm4c123g-launchpad
+  This is the port of NuttX to the Tiva TM4C123G LaunchPad.  The
+  Tiva® TM4C123G LaunchPad Evaluation Board is a low-cost evaluation
+  platform for ARM® Cortex™-M4F-based microcontrollers from Texas
+  Instruments.
+
 configs/twr-k60n512
   Kinetis K60 Cortex-M4 MCU.  This port uses the FreeScale TWR-K60N512
   development board.

configs/tm4c123g-launchpad/Kconfig

@@ -0,0 +1,7 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+if ARCH_BOARD_TM4C123G_LAUNCHPAD
+endif

configs/tm4c123g-launchpad/include/board.h

@@ -0,0 +1,222 @@
+/************************************************************************************
+ * configs/tm4c123g-launchpad/include/board.h
+ *
+ *   Copyright (C) 2014 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_TMC4C123G_LAUNCHPAD_INCLUDE_BOARD_H
+#define __CONFIGS_TMC4C123G_LAUNCHPAD_INCLUDE_BOARD_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Clocking *************************************************************************/
+
+/* RCC settings.  Crystals on-board the TMC4C123G LaunchPad include:
+ *
+ *   16MHz connected to OSC0/1 (pins 40/41)
+ *   32.768kHz connected to XOSC0/1 (pins 34/36)
+ */
+
+#define SYSCON_RCC_XTAL      SYSCON_RCC_XTAL16000KHZ /* On-board crystal is 16 MHz */
+#define XTAL_FREQUENCY       16000000
+
+/* Oscillator source is the main oscillator */
+
+#define SYSCON_RCC_OSCSRC    SYSCON_RCC_OSCSRC_MOSC
+#define SYSCON_RCC2_OSCSRC   SYSCON_RCC2_OSCSRC2_MOSC
+#define OSCSRC_FREQUENCY     XTAL_FREQUENCY
+
+/* Use system divider = 4; this corresponds to a system clock frequency
+ * of (400 / 1) / 5 = 80MHz (Using RCC2 and DIV400).
+ */
+
+#define TIVA_SYSDIV          5
+#define SYSCLK_FREQUENCY     80000000  /* 80MHz */
+
+/* Other RCC settings:
+ *
+ * - Main and internal oscillators enabled.
+ * - PLL and sys dividers not bypassed
+ * - PLL not powered down
+ * - No auto-clock gating reset
+ */
+
+#define TIVA_RCC_VALUE (SYSCON_RCC_OSCSRC | SYSCON_RCC_XTAL | \
+                      SYSCON_RCC_USESYSDIV | SYSCON_RCC_SYSDIV(TIVA_SYSDIV))
+
+/* RCC2 settings
+ *
+ * - PLL and sys dividers not bypassed.
+ * - PLL not powered down
+ * - Not using RCC2
+ *
+ * When SYSCON_RCC2_DIV400 is not selected, SYSDIV2 is the divisor-1.
+ * When SYSCON_RCC2_DIV400 is selected, SYSDIV2 is the divisor-1)/2, plus
+ * the LSB:
+ *
+ * SYSDIV2 SYSDIV2LSB DIVISOR
+ *   0       N/A         2
+ *   1       0           3
+ *   "       1           4
+ *   2       0           5
+ *   "       1           6
+ *   etc.
+ */
+
+#if (TIVA_SYSDIV & 1) == 0
+#  define TIVA_RCC2_VALUE (SYSCON_RCC2_OSCSRC | SYSCON_RCC2_SYSDIV2LSB | \
+                           SYSCON_RCC2_SYSDIV_DIV400(TIVA_SYSDIV) | \
+                           SYSCON_RCC2_DIV400 | SYSCON_RCC2_USERCC2)
+#else
+#  define TIVA_RCC2_VALUE (SYSCON_RCC2_OSCSRC | SYSCON_RCC2_SYSDIV_DIV400(TIVA_SYSDIV) | \
+                           SYSCON_RCC2_DIV400 | SYSCON_RCC2_USERCC2)
+#endif
+
+/* LED definitions ******************************************************************/
+/* The TMC4C123G LaunchPad has a single RGB LED.  There is only one visible LED which
+ * will vary in color.  But, from the standpoint of the firmware, this appears as
+ * three LEDs:
+ *
+ *   BOARD_LED_R    -- Connected to PF1
+ *   BOARD_LED_G    -- Connected to PF3
+ *   BOARD_LED_B    -- Connected to PF2
+ */
+
+/* LED index values for use with tm4c_setled() */
+
+#define BOARD_LED_R               0
+#define BOARD_LED_G               1
+#define BOARD_LED_B               2
+#define BOARD_NLEDS               3
+
+/* LED bits for use with tm4c_setleds() */
+
+#define BOARD_LED1_BIT            (1 << BOARD_LED1)
+#define BOARD_LED2_BIT            (1 << BOARD_LED2)
+
+/* If CONFIG_ARCH_LEDS is defined, then automated support for the LaunchPad LEDs
+ * will be included in the build:
+ *
+ * OFF:
+ * - OFF means that the OS is still initializing. Initialization is very fast so
+ *   if you see this at all, it probably means that the system is hanging up
+ *   somewhere in the initialization phases.
+ *
+ * GREEN or GREEN-ish
+ * - This means that the OS completed initialization.
+ *
+ * Bluish:
+ * - Whenever and interrupt or signal handler is entered, the BLUE LED is
+ *   illuminated and extinguished when the interrupt or signal handler exits.
+ *   This will add a BLUE-ish tinge to the LED.
+ *
+ * Redish:
+ * - If a recovered assertion occurs, the RED component will be illuminated
+ *   briefly while the assertion is handled.  You will probably never see this.
+ *
+ * Flashing RED:
+ * - In the event of a fatal crash, the BLUE and GREEN components will be
+ *   extinguished and the RED component will FLASH at a 2Hz rate.
+ */
+                                /* RED  GREEN BLUE               */
+#define LED_STARTED       0     /* OFF  OFF   OFF                */
+#define LED_HEAPALLOCATE  0     /* OFF  OFF   OFF                */
+#define LED_IRQSENABLED   0     /* OFF  OFF   OFF                */
+#define LED_STACKCREATED  1     /* OFF  ON    OFF                */
+#define LED_INIRQ         2     /* NC   NC    ON  (momentary)    */
+#define LED_SIGNAL        2     /* NC   NC    ON  (momentary)    */
+#define LED_ASSERTION     3     /* ON   NC    NC  (momentary)    */
+#define LED_PANIC         4     /* ON   OFF   OFF (flashing 2Hz) */
+
+/* LED definitions ******************************************************************/
+/* The TMC4C123G LaunchPad has a two buttons:
+ *
+ *   BOARD_SW1    -- Connected to PF4
+ *   BOARD_SW2    -- Connected to PF0
+ */
+
+#define BUTTON_SW1        0
+#define BUTTON_SW2        1
+#define NUM_BUTTONS       2
+
+#define BUTTON_SW1_BIT    (1 << BUTTON_SW1)
+#define BUTTON_SW2_BIT    (1 << BUTTON_SW2)
+
+/* Pin Multiplexing Disambiguation **************************************************/
+
+#define GPIO_UART1_CTS    GPIO_UART1_CTS_1
+#define GPIO_UART1_RTS    GPIO_UART1_RTS_1
+#define GPIO_UART1_RX     GPIO_UART1_RX_1
+#define GPIO_UART1_TX     GPIO_UART1_TX_1
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Name: tiva_boardinitialize
+ *
+ * Description:
+ *   All Tiva architectures must provide the following entry point.  This entry
+ *   point is called early in the intitialization -- after all memory has been
+ *   configured and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+void tiva_boardinitialize(void);
+
+/************************************************************************************
+ * Name:  tm4c_ledinit, tm4c_setled, and tm4c_setleds
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LED.  If
+ *   CONFIG_ARCH_LEDS is not defined, then the following interfaces are available to
+ *   control the LEDs from user applications.
+ *
+ ************************************************************************************/
+
+#ifndef CONFIG_ARCH_LEDS
+void tm4c_ledinit(void);
+void tm4c_setled(int led, bool ledon);
+void tm4c_setleds(uint8_t ledset);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif  /* __CONFIGS_TMC4C123G_LAUNCHPAD_INCLUDE_BOARD_H */

configs/tm4c123g-launchpad/nsh/Make.defs

@@ -0,0 +1,110 @@
+############################################################################
+# configs/tm4c123g-launchpad/nsh/Make.defs
+#
+#   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
+else
+  # Linux/Cygwin-native toolchain 
+  MKDEP = $(TOPDIR)/tools/mkdeps.sh
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/ld.script
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+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
+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 =
+

configs/tm4c123g-launchpad/nsh/setenv.sh

@@ -0,0 +1,74 @@
+#!/bin/bash
+# configs/tm4c123g-launchpad/nsh/setenv.sh
+#
+#   Copyright (C) 2014 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="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows.  You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
+
+# These are the Cygwin paths to the locations where I installed the Atollic
+# toolchain under windows.  You will also have to edit this if you install
+# the Atollic toolchain in any other location.  /usr/bin is added before
+# the Atollic bin path because there is are binaries named gcc.exe and g++.exe
+# at those locations as well.
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for ARM Pro 2.3.0/ARMTools/bin"
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for STMicroelectronics STM32 Lite 2.3.0/ARMTools/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# The tm4c123g-launchpad/tools directory
+export TOOL_DIR="${WD}/configs/tm4c123g-launchpad/tools"
+
+# Add the path to the toolchain and tools directory to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:${TOOL_DIR}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"

configs/tm4c123g-launchpad/scripts/ld.script

@@ -0,0 +1,115 @@
+/****************************************************************************
+ * configs/tm4c123g-launchpad/scripts/ld.script
+ *
+ *   Copyright (C) 2014 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 TM4C123GH6ZRB has 256Kb of FLASH beginning at address 0x0000:0000 and
+ * 32Kb of SRAM beginning at 0x2000:0000.
+ */
+
+MEMORY
+{
+    flash (rx) : ORIGIN = 0x00000000, LENGTH = 256K
+    sram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
+}
+
+OUTPUT_ARCH(arm)
+ENTRY(_stext)
+
+SECTIONS
+{
+	.text : {
+		_stext = ABSOLUTE(.);
+		*(.vectors)
+		*(.text .text.*)
+		*(.fixup)
+		*(.gnu.warning)
+		*(.rodata .rodata.*)
+		*(.gnu.linkonce.t.*)
+		*(.glue_7)
+		*(.glue_7t)
+		*(.got)
+		*(.gcc_except_table)
+		*(.gnu.linkonce.r.*)
+		_etext = ABSOLUTE(.);
+	} > flash
+
+	.init_section : {
+		_sinit = ABSOLUTE(.);
+		*(.init_array .init_array.*)
+		_einit = ABSOLUTE(.);
+	} > flash
+
+	.ARM.extab : {
+		*(.ARM.extab*)
+	} > flash
+
+	__exidx_start = ABSOLUTE(.);
+	.ARM.exidx : {
+		*(.ARM.exidx*)
+	} > flash
+	__exidx_end = ABSOLUTE(.);
+
+	_eronly = ABSOLUTE(.);
+
+	.data : {
+		_sdata = ABSOLUTE(.);
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		CONSTRUCTORS
+		_edata = ABSOLUTE(.);
+	} > sram AT > flash
+
+	.bss : {
+		_sbss = ABSOLUTE(.);
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		_ebss = ABSOLUTE(.);
+	} > sram
+ 
+	/* Stabs debugging sections. */
+
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_info 0 : { *(.debug_info) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+	.debug_aranges 0 : { *(.debug_aranges) }
+}

configs/tm4c123g-launchpad/src/.gitignore

@@ -0,0 +1,2 @@
+/.depend
+/Make.dep

configs/tm4c123g-launchpad/src/Makefile

@@ -0,0 +1,91 @@
+############################################################################
+# configs/tm4c123g-launchpad/src/Makefile
+#
+#   Copyright (C) 2014 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		= tm4c_boot.c tm4c_ssi.c
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS		+= tm4c_autoleds.c
+endif
+
+ifeq ($(CONFIG_NSH_ARCHINIT),y)
+CSRCS		+= tm4c_nsh.c
+endif
+
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+SRCS		= $(ASRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ifeq ($(WINTOOL),y)
+  CFLAGS	+= -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+  		   -I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
+else
+  CFLAGS	+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/armv7-m
+endif
+
+all: libboard$(LIBEXT)
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+libboard$(LIBEXT): $(OBJS)
+	$(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

configs/tm4c123g-launchpad/src/tm4c_autoleds.c

@@ -0,0 +1,223 @@
+/****************************************************************************
+ * configs/tm4c123g-launchpad/src/tm4c_leds.c
+ *
+ *   Copyright (C) 2014 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 <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "up_internal.h"
+#include "tiva_gpio.h"
+#include "tm4c123g-launchpad.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+/* The TM4C123G LaunchPad has a single RGB LED.  There is only one visible LED
+ * which will vary in color.  But, from the standpoint of the firmware, this
+ * appears as three LEDs:
+ *
+ *   BOARD_LED_R    -- Connected to PF1
+ *   BOARD_LED_G    -- Connected to PF3
+ *   BOARD_LED_B    -- Connected to PF2
+ *
+ * If CONFIG_ARCH_LEDS is defined, then automated support for the LaunchPad LEDs
+ * will be included in the build:
+ *
+ * OFF:
+ * - OFF means that the OS is still initializing. Initialization is very fast so
+ *   if you see this at all, it probably means that the system is hanging up
+ *   somewhere in the initialization phases.
+ *
+ * GREEN or GREEN-ish
+ * - This means that the OS completed initialization.
+ *
+ * Bluish:
+ * - Whenever and interrupt or signal handler is entered, the BLUE LED is
+ *   illuminated and extinguished when the interrupt or signal handler exits.
+ *   This will add a BLUE-ish tinge to the LED.
+ *
+ * Redish:
+ * - If a recovered assertion occurs, the RED component will be illuminated
+ *   briefly while the assertion is handled.  You will probably never see this.
+ *
+ * Flashing RED:
+ * - In the event of a fatal crash, the BLUE and GREEN components will be
+ *   extinguished and the RED component will FLASH at a 2Hz rate.
+ *
+ *                          RED  GREEN BLUE
+ * LED_STARTED       0      OFF  OFF   OFF
+ * LED_HEAPALLOCATE  0      OFF  OFF   OFF
+ * LED_IRQSENABLED   0      OFF  OFF   OFF
+ * LED_STACKCREATED  1      OFF  ON    OFF
+ * LED_INIRQ         2      NC   NC    ON  (momentary)
+ * LED_SIGNAL        2      NC   NC    ON  (momentary)
+ * LED_ASSERTION     3      ON   NC    NC  (momentary)
+ * LED_PANIC         4      ON   OFF   OFF (flashing 2Hz)
+ */
+
+/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
+ * with CONFIG_DEBUG_VERBOSE too)
+ */
+
+#ifdef CONFIG_DEBUG_LEDS
+#  define leddbg  lldbg
+#  define ledvdbg llvdbg
+#else
+#  define leddbg(x...)
+#  define ledvdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#ifdef CONFIG_DEBUG_LEDS
+#  define led_dumpgpio(m) tiva_dumpgpio(LED_GPIO, m)
+#else
+#  define led_dumpgpio(m)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: tm4c_ledinit
+ *
+ * Description:
+ *   Called to initialize the on-board LEDs.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void tm4c_ledinit(void)
+{
+  leddbg("Initializing\n");
+
+  /* Configure Port E, Bit 1 as an output, initial value=OFF */
+
+  led_dumpgpio("tm4c_ledinit before tiva_configgpio()");
+  tiva_configgpio(GPIO_LED_R);
+  tiva_configgpio(GPIO_LED_G);
+  tiva_configgpio(GPIO_LED_B);
+  led_dumpgpio("tm4c_ledinit after tiva_configgpio()");
+}
+
+/****************************************************************************
+ * Name: board_led_on
+ ****************************************************************************/
+
+void board_led_on(int led)
+{
+  switch (led)
+    {
+      /* All components stay off until the file initialization step */
+
+      default:
+      case 0:
+        break;
+
+      /* The GREEN component is illuminated at the final initialization step */
+
+      case 1:
+        tiva_gpiowrite(GPIO_LED_G, false);
+        break;
+
+      /* These will illuminate the BLUE component with on effect no RED and GREEN */
+
+      case 2:
+        tiva_gpiowrite(GPIO_LED_B, false);
+        break;
+
+      /* This will turn off RED and GREEN and turn RED on */
+
+      case 4:
+        tiva_gpiowrite(GPIO_LED_G, true);
+        tiva_gpiowrite(GPIO_LED_B, true);
+
+      /* This will illuminate the RED component with no effect on RED and GREEN */
+
+      case 3:
+        tiva_gpiowrite(GPIO_LED_R, false);
+        break;
+    }
+}
+
+/****************************************************************************
+ * Name: board_led_off
+ ****************************************************************************/
+
+void board_led_off(int led)
+{
+  switch (led)
+    {
+      /* These should not happen and are ignored */
+
+      default:
+      case 0:
+      case 1:
+        break;
+
+      /* These will extinguish the BLUE component with no effect on RED and GREEN */
+
+      case 2:
+        tiva_gpiowrite(GPIO_LED_B, true);
+        break;
+
+      /* These will extinguish the RED component with on effect on RED and GREEN */
+
+      case 3:
+      case 4:
+        tiva_gpiowrite(GPIO_LED_R, true);
+        break;
+    }
+}
+
+#endif /* CONFIG_ARCH_LEDS */

configs/tm4c123g-launchpad/src/tm4c_boot.c

@@ -0,0 +1,92 @@
+/************************************************************************************
+ * configs/tm4c123g-launchpad/src/tm4c_boot.c
+ *
+ *   Copyright (C) 2014 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 "up_internal.h"
+#include "tm4c123g-launchpad.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: tiva_boardinitialize
+ *
+ * Description:
+ *   All Tiva architectures must provide the following entry point.  This entry
+ *   point is called early in the intitialization -- after all memory has been
+ *   configured and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+void tiva_boardinitialize(void)
+{
+  /* Configure SPI chip selects if 1) SSI is not disabled, and 2) the weak function
+   * tm4c_ssiinitialize() has been brought into the link.
+   */
+
+  /* The TM4C123G LaunchPad microSD CS and OLED are on SSI0 */
+
+#if !defined(CONFIG_SSI0_DISABLE) || !defined(CONFIG_SSI1_DISABLE)
+  if (tm4c_ssiinitialize)
+    {
+      tm4c_ssiinitialize();
+    }
+#endif
+
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+  tm4c_ledinit();
+#endif
+}

configs/tm4c123g-launchpad/src/tm4c_nsh.c

@@ -0,0 +1,92 @@
+/****************************************************************************
+ * config/tm4c123g-launchpad/src/tm4c_nsh.c
+ *
+ *   Copyright (C) 2014 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 <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/spi/spi.h>
+#include <nuttx/mmcsd.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+/* Can't support USB features if USB is not enabled */
+
+#ifndef CONFIG_USBDEV
+#  undef NSH_HAVEUSBDEV
+#endif
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG
+#    define message(...) lowsyslog(__VA_ARGS__)
+#  else
+#    define message(...) printf(__VA_ARGS__)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG
+#    define message lowsyslog
+#  else
+#    define message printf
+#  endif
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ *   Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+  return OK;
+}

configs/tm4c123g-launchpad/src/tm4c_ssi.c

@@ -0,0 +1,132 @@
+/************************************************************************************
+ * configs/tm4c123g-launchpad/src/tm4c_ssi.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/spi/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "tiva_gpio.h"
+#include "tm4c123g-launchpad.h"
+
+/* The TM4C123G LaunchPad microSD CS is on SSI0 */
+
+#if !defined(CONFIG_SSI0_DISABLE) || !defined(CONFIG_SSI1_DISABLE)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* CONFIG_DEBUG_SPI enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#ifdef CONFIG_DEBUG_SPI
+#  define ssidbg lldbg
+#else
+#  define ssidbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#if defined(CONFIG_DEBUG_SPI) && defined(CONFIG_DEBUG_VERBOSE)
+#  define ssivdbg lldbg
+#  define ssi_dumpgpio(m) tiva_dumpgpio(SDCCS_GPIO, m)
+#else
+#  define ssivdbg(x...)
+#  define ssi_dumpgpio(m)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: tm4c_ssiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the TM4C123G LaunchPad.
+ *
+ ************************************************************************************/
+
+void weak_function tm4c_ssiinitialize(void)
+{
+}
+
+/****************************************************************************
+ * The external functions, tiva_spiselect and tiva_spistatus must be provided
+ * by board-specific logic.  The are implementations of the select and status
+ * methods SPI interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h).
+ * All othermethods (including tiva_spiinitialize()) are provided by common
+ * logic.  To use this common SPI logic on your board:
+ *
+ *   1. Provide tiva_spiselect() and tiva_spistatus() functions in your
+ *      board-specific logic.  This function will perform chip selection and
+ *      status operations using GPIOs in the way your board is configured.
+ *   2. Add a call to tiva_spiinitialize() in your low level initialization
+ *      logic
+ *   3. The handle returned by tiva_spiinitialize() may then be used to bind the
+ *      SPI driver to higher level logic (e.g., calling 
+ *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ *      the SPI MMC/SD driver).
+ *
+ ****************************************************************************/
+
+void tiva_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  ssidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  ssi_dumpgpio("tiva_spiselect() Entry");
+  ssi_dumpgpio("tiva_spiselect() Exit");
+}
+
+uint8_t tiva_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  ssidbg("Returning SPI_STATUS_PRESENT\n");
+  return SPI_STATUS_PRESENT;
+}
+
+#endif /* !CONFIG_SSI0_DISABLE || !CONFIG_SSI1_DISABLE */

configs/tm4c123g-launchpad/src/tmfc123g-launchpad.h

@@ -0,0 +1,152 @@
+/************************************************************************************
+ * configs/tm4c123g-launchpad/src/tm4c123g-launchpad.h
+ *
+ *   Copyright (C) 2014 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_TM4C123G_LAUNCHPAD_TM4C123G_LAUNCHPAD_H
+#define __CONFIGS_TM4C123G_LAUNCHPAD_TM4C123G_LAUNCHPAD_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include "chip.h"
+#include "tiva_gpio.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* How many SSI modules does this chip support? */
+
+#if TIVA_NSSI < 1
+#  undef CONFIG_SSI0_DISABLE
+#  define CONFIG_SSI0_DISABLE 1
+#  undef CONFIG_SSI1_DISABLE
+#  define CONFIG_SSI1_DISABLE 1
+#elif TIVA_NSSI < 2
+#  undef CONFIG_SSI1_DISABLE
+#  define CONFIG_SSI1_DISABLE 1
+#endif
+
+/* TM4C123G LaunchPad ***************************************************************/
+/* The TM4C123G LaunchPad has a single RGB LED.  There is only one visible LED which
+ * will vary in color.  But, from the standpoint of the firmware, this appears as
+ * three LEDs:
+ *
+ *   BOARD_LED_R    -- Connected to PF1
+ *   BOARD_LED_G    -- Connected to PF3
+ *   BOARD_LED_B    -- Connected to PF2
+ *
+ * If CONFIG_ARCH_LEDS is defined, then automated support for the LaunchPad LEDs
+ * will be included in the build:
+ *
+ * OFF:
+ * - OFF means that the OS is still initializing. Initialization is very fast so
+ *   if you see this at all, it probably means that the system is hanging up
+ *   somewhere in the initialization phases.
+ *
+ * GREEN or GREEN-ish
+ * - This means that the OS completed initialization.
+ *
+ * Bluish:
+ * - Whenever and interrupt or signal handler is entered, the BLUE LED is
+ *   illuminated and extinguished when the interrupt or signal handler exits.
+ *   This will add a BLUE-ish tinge to the LED.
+ *
+ * Redish:
+ * - If a recovered assertion occurs, the RED component will be illuminated
+ *   briefly while the assertion is handled.  You will probably never see this.
+ *
+ * Flashing RED:
+ * - In the event of a fatal crash, the BLUE and GREEN components will be
+ *   extinguished and the RED component will FLASH at a 2Hz rate.
+ *
+ *                          RED  GREEN BLUE
+ * LED_STARTED       0      OFF  OFF   OFF
+ * LED_HEAPALLOCATE  0      OFF  OFF   OFF
+ * LED_IRQSENABLED   0      OFF  OFF   OFF
+ * LED_STACKCREATED  1      OFF  ON    OFF
+ * LED_INIRQ         2      NC   NC    ON  (momentary)
+ * LED_SIGNAL        2      NC   NC    ON  (momentary)
+ * LED_ASSERTION     3      ON   NC    NC  (momentary)
+ * LED_PANIC         3      ON   OFF   OFF (flashing 2Hz)
+ */
+
+#define GPIO_LED_R   (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTF | GPIO_PIN_1)
+#define GPIO_LED_G   (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTF | GPIO_PIN_3)
+#define GPIO_LED_B   (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTF | GPIO_PIN_2)
+
+/* The TM4C123G LaunchPad has a two buttons:
+ *
+ *   BOARD_SW1    -- Connected to PF4
+ *   BOARD_SW2    -- Connected to PF0
+ */
+
+#define GPIO_SW1     (GPIO_FUNC_INTERRUPT | GPIO_INT_BOTHEDGES | GPIO_PORTF | GPIO_PIN_1)
+#define GPIO_SW2     (GPIO_FUNC_INTERRUPT | GPIO_INT_BOTHEDGES | GPIO_PORTF | GPIO_PIN_1)
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Name: tm4c_ssiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the TM4C123G LaunchPad.
+ *
+ ************************************************************************************/
+
+void weak_function tm4c_ssiinitialize(void);
+
+/****************************************************************************
+ * Name: tm4c_ledinit
+ *
+ * Description:
+ *   Called to initialize the on-board LEDs.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_LEDS
+void tm4c_ledinit(void);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_TM4C123G_LAUNCHPAD_TM4C123G_LAUNCHPAD_H */
+

configs/tm4c123g-launchpad/tools/lm4f120-launchpad.cfg

@@ -0,0 +1,71 @@
+#
+# TI Tiva Launchpad ek-tm4c123gxl Evaluation Kits
+#
+# http://www.ti.com/tool/ek-tm4c123gxl
+#
+
+#
+# NOTE: using the bundled ICDI interface is optional!
+# This interface is not ftdi based as previous boards were
+#
+
+# Interface configuration
+
+#
+# TI Tiva In-Circuit Debug Interface (ICDI) Board
+#
+# This is the propriety ICDI interface used on newer boards such as
+# LM4F232 Evaluation Kit - http://www.ti.com/tool/ek-lm4f232
+# Tiva Launchpad - http://www.ti.com/stellaris-launchpad
+# http://www.ti.com/tool/ek-lm4f232
+#
+
+interface hla
+hla_layout ti-icdi
+hla_vid_pid 0x1cbe 0x00fd
+
+# Board configuration
+
+# unused but set to disable warnings
+adapter_khz 1000
+
+set WORKAREASIZE 0x8000
+set CHIPNAME tm4c123gh5qr
+
+# Target configuration
+
+#
+# lm3s icdi pseudo target
+#
+
+if { [info exists CHIPNAME] } {
+   set _CHIPNAME $CHIPNAME
+} else {
+   set _CHIPNAME lm3s
+}
+
+# Work-area is a space in RAM used for flash programming
+# By default use 16kB
+if { [info exists WORKAREASIZE] } {
+   set _WORKAREASIZE $WORKAREASIZE
+} else {
+   set _WORKAREASIZE 0x4000
+}
+
+#
+# possible value are hla_jtag
+# currently swd is not supported
+#
+transport select hla_jtag
+
+# do not check id as icdi currently does not support it
+hla newtap $_CHIPNAME cpu -expected-id 0
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME hla_target -chain-position $_TARGETNAME
+
+$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
+
+# flash configuration ... autodetects sizes, autoprobed
+flash bank $_CHIPNAME.flash stellaris 0 0 0 0 $_TARGETNAME
+

configs/tm4c123g-launchpad/tools/oocd.sh

@@ -0,0 +1,58 @@
+#!/bin/sh
+#
+# See configs/tm4c123g-launchpad/README.txt for information about
+# this file.
+
+TOPDIR=$1
+USAGE="$0 <TOPDIR> [-d]"
+if [ -z "${TOPDIR}" ]; then
+	echo "Missing argument"
+	echo $USAGE
+	exit 1
+fi
+
+# Assume that OpenOCD was installed and at /usr/local/bin.  Uncomment
+# the following to run directly from the build directory
+
+# OPENOCD_PATH="/home/OpenOCD/openocd/src"
+# OPENOCD_PATH="/usr/bin"
+OPENOCD_PATH="/usr/local/bin"
+
+# TARGET_PATH="/home/OpenOCD/openocd/tcl"
+# TARGET_PATH="/usr/share/openocd/scripts"
+TARGET_PATH="/usr/local/share/openocd/scripts"
+
+# Assume a Unix development environment.  Uncomment to use a Windows
+# like environment
+
+# OPENOCD_EXE=openocd.exe
+OPENOCD_EXE=openocd
+
+OPENOCD_CFG="${TOPDIR}/configs/tm4c123g-launchpad/tools/tm4c123g-launchpad.cfg"
+OPENOCD_ARGS="-f ${OPENOCD_CFG} -s ${TARGET_PATH}"
+
+if [ "X$2" = "X-d" ]; then
+	OPENOCD_ARGS=$OPENOCD_ARGS" -d3"
+	set -x
+fi
+
+if [ ! -d ${OPENOCD_PATH} ]; then
+	echo "OpenOCD path does not exist: ${OPENOCD_PATH}"
+	exit 1
+fi
+if [ ! -x ${OPENOCD_PATH}/${OPENOCD_EXE} ]; then
+	echo "OpenOCD does not exist: ${OPENOCD_PATH}/${OPENOCD_EXE}"
+	exit 1
+fi
+if [ ! -f ${OPENOCD_CFG} ]; then
+	echo "OpenOCD config file does not exist: ${OPENOCD_CFG}"
+	exit 1
+fi
+
+echo "Starting OpenOCD"
+cd ${OPENOCD_PATH} || { echo "Failed to CD to ${OPENOCD_PATH}"; exit 1; }
+${OPENOCD_EXE} ${OPENOCD_ARGS} &
+echo "OpenOCD daemon started"
+ps -ef | grep openocd
+echo "In GDB: target remote localhost:3333"
+