Eliminate arch/arc/src/lm3s/lm3s_internal.h; replace with several header files

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5494 42af7a65-404d-4744-a932-0658087f49c3

19 files changed, 734 insertions, 281 deletions

diff --git a/nuttx/arch/arm/src/arm/Toolchain.defs b/nuttx/arch/arm/src/arm/Toolchain.defs
index ea11c4dc9..daa825842 100644
--- a/nuttx/arch/arm/src/arm/Toolchain.defs
+++ b/nuttx/arch/arm/src/arm/Toolchain.defs
@@ -102,7 +102,7 @@ endif
 # NuttX buildroot under Linux or Cygwin
 
 ifeq ($(CONFIG_ARM_TOOLCHAIN),BUILDROOT)
-ifeq ($(CONFIG_ARMV_OABI_TOOLCHAIN),y)
+ifeq ($(CONFIG_ARM_OABI_TOOLCHAIN),y)
   CROSSDEV = arm-nuttx-elf-
   ARCROSSDEV = arm-nuttx-elf-
 else
diff --git a/nuttx/arch/arm/src/lm3s/chip.h b/nuttx/arch/arm/src/lm3s/chip.h
index 1e96b5222..481a9be15 100644
--- a/nuttx/arch/arm/src/lm3s/chip.h
+++ b/nuttx/arch/arm/src/lm3s/chip.h
@@ -58,6 +58,16 @@
 #include "chip/lm3s_ethernet.h"   /* Ethernet MAC and PHY */
 #include "chip/lm3s_flash.h"      /* FLASH */
 
+/* The LM3S69xx only supports 8 priority levels.  The hardware priority mechanism
+ * will only look at the upper N bits of the 8-bit priority level (where N is 3 for
+ * the Stellaris family), so any prioritization must be performed in those bits.
+ * The default priority level is set to the middle value
+ */
+
+#define NVIC_SYSH_PRIORITY_MIN     0xe0 /* All bits set in minimum priority */
+#define NVIC_SYSH_PRIORITY_DEFAULT 0x80 /* Midpoint is the default */
+#define NVIC_SYSH_PRIORITY_MAX     0x00 /* Zero is maximum priority */
+
 /************************************************************************************
  * Public Types
  ************************************************************************************/
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_internal.h b/nuttx/arch/arm/src/lm3s/chip/lm3s_pinmap.h
index 9bfd67a5e..62a4a03fd 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_internal.h
+++ b/nuttx/arch/arm/src/lm3s/chip/lm3s_pinmap.h
@@ -1,7 +1,7 @@
 /************************************************************************************
- * arch/arm/src/lm3s/lm3s_internal.h
+ * arch/arm/src/lm3s/chip/lm3s_pinmap.h
  *
- *   Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009-2010, 2013 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -33,123 +33,19 @@
  *
  ************************************************************************************/
 
-#ifndef __ARCH_ARM_SRC_LM3S_LM3S_INTERNAL_H
-#define __ARCH_ARM_SRC_LM3S_LM3S_INTERNAL_H
+#ifndef __ARCH_ARM_SRC_LM3S_CHIP_LM3S_PINMAP_H
+#define __ARCH_ARM_SRC_LM3S_CHIP_LM3S_PINMAP_H
 
 /************************************************************************************
  * Included Files
  ************************************************************************************/
 
 #include <nuttx/config.h>
-#include <stdint.h>
-#include <stdbool.h>
-
-#include "up_internal.h"
-#include "chip.h"
 
 /************************************************************************************
  * Pre-processor Definitions
  ************************************************************************************/
 
-/* The LM3S69xx only supports 8 priority levels.  The hardware priority mechanism
- * will only look at the upper N bits of the 8-bit priority level (where N is 3 for
- * the Stellaris family), so any prioritization must be performed in those bits.
- * The default priority level is set to the middle value
- */
-
-#define NVIC_SYSH_PRIORITY_MIN     0xe0 /* All bits set in minimum priority */
-#define NVIC_SYSH_PRIORITY_DEFAULT 0x80 /* Midpoint is the default */
-#define NVIC_SYSH_PRIORITY_MAX     0x00 /* Zero is maximum priority */
-
-/* Bit-encoded input to lm3s_configgpio() *******************************************/
-
-/* Encoding:
- * FFFS SPPP IIIn nnnn nnnn nnnn VPPP PBBB
- *
- * These bits set the primary function of the pin:
- * FFFn nnnn nnnn nnnn nnnn nnnn nnnn nnnn
- */
-
-#define GPIO_FUNC_SHIFT               29                         /* Bit 31-29: GPIO function */
-#define GPIO_FUNC_MASK                (7 << GPIO_FUNC_SHIFT)     /* (See table 9-1 in data sheet) */
-#define GPIO_FUNC_INPUT               (0 << GPIO_FUNC_SHIFT)     /*   Digital GPIO input */
-#define GPIO_FUNC_OUTPUT              (1 << GPIO_FUNC_SHIFT)     /*   Digital GPIO output */
-#define GPIO_FUNC_ODINPUT             (2 << GPIO_FUNC_SHIFT)     /*   Open-drain GPIO input */
-#define GPIO_FUNC_ODOUTPUT            (3 << GPIO_FUNC_SHIFT)     /*   Open-drain GPIO output */
-#define GPIO_FUNC_PFODIO              (4 << GPIO_FUNC_SHIFT)     /*   Open-drain input/output (I2C) */
-#define GPIO_FUNC_PFINPUT             (5 << GPIO_FUNC_SHIFT)     /*   Digital input (Timer, CCP) */
-#define GPIO_FUNC_PFOUTPUT            (5 << GPIO_FUNC_SHIFT)     /*   Digital output (Timer, PWM, Comparator) */
-#define GPIO_FUNC_PFIO                (5 << GPIO_FUNC_SHIFT)     /*   Digital input/output (SSI, UART) */
-#define GPIO_FUNC_ANINPUT             (6 << GPIO_FUNC_SHIFT)     /*   Analog input (Comparator) */
-#define GPIO_FUNC_INTERRUPT           (7 << GPIO_FUNC_SHIFT)     /*   Interrupt function */
-#define GPIO_FUNC_MAX                 GPIO_FUNC_INTERRUPT
-
-/* That primary may be modified by the following options
- * nnnS SPPP nnnn nnnn nnnn nnnn nnnn nnnn
- */
-
-#define GPIO_STRENGTH_SHIFT           27                         /* Bits 28-27: Pad drive strength */
-#define GPIO_STRENGTH_MASK            (3 << GPIO_STRENGTH_SHIFT)
-#define GPIO_STRENGTH_2MA             (0 << GPIO_STRENGTH_SHIFT) /*   2mA pad drive strength */
-#define GPIO_STRENGTH_4MA             (1 << GPIO_STRENGTH_SHIFT) /*   4mA pad drive strength */
-#define GPIO_STRENGTH_8MA             (2 << GPIO_STRENGTH_SHIFT) /*   8mA pad drive strength */
-#define GPIO_STRENGTH_8MASC           (3 << GPIO_STRENGTH_SHIFT) /*   8mA Pad drive with slew rate control */
-#define GPIO_STRENGTH_MAX             GPIO_STRENGTH_8MASC
-
-#define GPIO_PADTYPE_SHIFT            24                         /* Bits 26-24: Pad type */
-#define GPIO_PADTYPE_MASK             (7 << GPIO_PADTYPE_SHIFT)
-#define GPIO_PADTYPE_STD              (0 << GPIO_PADTYPE_SHIFT)  /*   Push-pull */
-#define GPIO_PADTYPE_STDWPU           (1 << GPIO_PADTYPE_SHIFT)  /*   Push-pull with weak pull-up */
-#define GPIO_PADTYPE_STDWPD           (2 << GPIO_PADTYPE_SHIFT)  /*   Push-pull with weak pull-down */
-#define GPIO_PADTYPE_OD               (3 << GPIO_PADTYPE_SHIFT)  /*   Open-drain */
-#define GPIO_PADTYPE_ODWPU            (4 << GPIO_PADTYPE_SHIFT)  /*   Open-drain with weak pull-up */
-#define GPIO_PADTYPE_ODWPD            (5 << GPIO_PADTYPE_SHIFT)  /*   Open-drain with weak pull-down */
-#define GPIO_PADTYPE_ANALOG           (6 << GPIO_PADTYPE_SHIFT)  /*   Analog comparator */
-
-/* If the pin is an interrupt, then the following options apply
- * nnnn nnnn IIIn nnnn nnnn nnnn nnnn nnnn
- */
-
-#define GPIO_INT_SHIFT                21                         /* Bits 23-21: Interrupt type */
-#define GPIO_INT_MASK                 (7 << GPIO_INT_SHIFT)
-#define GPIO_INT_FALLINGEDGE          (0 << GPIO_INT_SHIFT)      /*   Interrupt on falling edge */
-#define GPIO_INT_RISINGEDGE           (1 << GPIO_INT_SHIFT)      /*   Interrupt on rising edge */
-#define GPIO_INT_BOTHEDGES            (2 << GPIO_INT_SHIFT)      /*   Interrupt on both edges */
-#define GPIO_INT_LOWLEVEL             (3 << GPIO_INT_SHIFT)      /*   Interrupt on low level */
-#define GPIO_INT_HIGHLEVEL            (4 << GPIO_INT_SHIFT)      /*   Interrupt on high level */
-
-/* If the pin is an GPIO digital output, then this identifies the initial output value:
- * nnnn nnnn nnnn nnnn nnnn nnnn Vnnn nnnn
- */
-
-#define GPIO_VALUE_SHIFT              7                          /* Bit 7: If output, inital value of output */
-#define GPIO_VALUE_MASK               (1 << GPIO_VALUE_SHIFT)
-#define GPIO_VALUE_ZERO               (0 << GPIO_VALUE_SHIFT)    /*   Initial value is zero */
-#define GPIO_VALUE_ONE                (1 << GPIO_VALUE_SHIFT)    /*   Initial value is one */
-
-/* This identifies the GPIO port
- * nnnn nnnn nnnn nnnn nnnn nnnn nPPP Pnnn
- */
-
-#define GPIO_PORT_SHIFT               3                          /* Bit 3-6:  Port number */
-#define GPIO_PORT_MASK                (15 << GPIO_PORT_SHIFT)
-#define GPIO_PORTA                    (0 << GPIO_PORT_SHIFT)     /*   GPIOA */
-#define GPIO_PORTB                    (1 << GPIO_PORT_SHIFT)     /*   GPIOB */
-#define GPIO_PORTC                    (2 << GPIO_PORT_SHIFT)     /*   GPIOC */
-#define GPIO_PORTD                    (3 << GPIO_PORT_SHIFT)     /*   GPIOD */
-#define GPIO_PORTE                    (4 << GPIO_PORT_SHIFT)     /*   GPIOE */
-#define GPIO_PORTF                    (5 << GPIO_PORT_SHIFT)     /*   GPIOF */
-#define GPIO_PORTG                    (6 << GPIO_PORT_SHIFT)     /*   GPIOG */
-#define GPIO_PORTH                    (7 << GPIO_PORT_SHIFT)     /*   GPIOH */
-#define GPIO_PORTJ                    (8 << GPIO_PORT_SHIFT)     /*   GPIOJ */
-
-/* This identifies the bit in the port:
- * nnnn nnnn nnnn nnnn nnnn nnnn nnnn nBBB
- */
-
-#define GPIO_NUMBER_SHIFT             0                           /* Bits 0-2: GPIO number: 0-7 */
-#define GPIO_NUMBER_MASK              (7 << GPIO_NUMBER_SHIFT)
-
 /* The following lists the input value to lm3s_configgpio to setup the alternate,
  * hardware function for each pin.
  */
@@ -325,7 +221,6 @@
 #  define GPIO_UART2_RX    (GPIO_FUNC_PFINPUT | GPIO_PORTG | 0)  /* PA0: UART 0 receive (UGRx) */
 #  define GPIO_UART2_TX    (GPIO_FUNC_PFOUTPUT | GPIO_PORTG | 1) /* PA1: UART 0 transmit (UGTx) */
 
-
 #elif defined(CONFIG_ARCH_CHIP_LM3S8962)
 #  define GPIO_UART0_RX    (GPIO_FUNC_PFINPUT   | GPIO_PORTA | 0)       /* PA0: UART 0 receive (U0Rx) */
 #  define GPIO_UART0_TX    (GPIO_FUNC_PFOUTPUT  | GPIO_PORTA | 1)       /* PA1: UART 0 transmit (U0Tx) */
@@ -376,171 +271,11 @@
  ************************************************************************************/
 
 /************************************************************************************
- * Inline Functions
- ************************************************************************************/
-
-#ifndef __ASSEMBLY__
-
-/************************************************************************************
  * Public Data
  ************************************************************************************/
 
-#undef EXTERN
-#if defined(__cplusplus)
-#define EXTERN extern "C"
-extern "C" {
-#else
-#define EXTERN extern
-#endif
-
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/
 
-/****************************************************************************
- * Name: up_lowsetup
- *
- * Description:
- *   Called at the very beginning of _start.  Performs low level initialization.
- *
- ****************************************************************************/
-
-EXTERN void up_lowsetup(void);
-
-/****************************************************************************
- * Name: lm3s_clockconfig
- *
- * Description:
- *   Called to change to new clock based on desired rcc and rcc2 settings.
- *   This is use to set up the initial clocking but can be used later to
- *   support slow clocked, low power consumption modes.
- *
- ****************************************************************************/
-
-EXTERN void lm3s_clockconfig(uint32_t newrcc, uint32_t newrcc2);
-
-/****************************************************************************
- * Name: up_clockconfig
- *
- * Description:
- *   Called early in the bootsequence (before .data and .bss are available)
- *   in order to configure initial clocking.
- *
- ****************************************************************************/
-
-EXTERN void up_clockconfig(void);
-
-/****************************************************************************
- * Name: lm3s_configgpio
- *
- * Description:
- *   Configure a GPIO pin based on bit-encoded description of the pin.
- *
- ****************************************************************************/
-
-EXTERN int lm3s_configgpio(uint32_t cfgset);
-
-/****************************************************************************
- * Name: lm3s_gpiowrite
- *
- * Description:
- *   Write one or zero to the selected GPIO pin
- *
- ****************************************************************************/
-
-EXTERN void lm3s_gpiowrite(uint32_t pinset, bool value);
-
-/****************************************************************************
- * Name: lm3s_gpioread
- *
- * Description:
- *   Read one or zero from the selected GPIO pin
- *
- ****************************************************************************/
-
-EXTERN bool lm3s_gpioread(uint32_t pinset, bool value);
-
-/****************************************************************************
- * Function:  lm3s_dumpgpio
- *
- * Description:
- *   Dump all GPIO registers associated with the provided base address
- *
- ****************************************************************************/
-
-EXTERN int lm3s_dumpgpio(uint32_t pinset, const char *msg);
-
-/****************************************************************************
- * Name: gpio_irqinitialize
- *
- * Description:
- *   Initialize all vectors to the unexpected interrupt handler
- *
- ****************************************************************************/
-
-EXTERN int weak_function gpio_irqinitialize(void);
-
-/****************************************************************************
- * Function: lm3s_ethinitialize
- *
- * Description:
- *   Initialize the Ethernet driver for one interface.  If the LM3S chip
- *   supports multiple Ethernet controllers, then bould specific logic
- *   must implement up_netinitialize() and call this function to initialize
- *   the desiresed interfaces.
- *
- * Parameters:
- *   None
- *
- * Returned Value:
- *   OK on success; Negated errno on failure.
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-#if LM3S_NETHCONTROLLERS > 1
-EXTERN int lm3s_ethinitialize(int intf);
-#endif
-
-/****************************************************************************
- * The external functions, lm3s_spiselect, lm3s_spistatus, and
- * lm3s_spicmddata must be provided by board-specific logic.  These are
- * implementations of the select, status, and cmddata methods of the SPI
- * interface defined by struct spi_ops_s (see include/nuttx/spi.h).
- * All other methods (including up_spiinitialize()) are provided by common
- * logic.  To use this common SPI logic on your board:
- *
- *   1. Provide logic in lm3s_boardinitialize() to configure SPI chip select
- *      pins.
- *   2. Provide lm3s_spiselect() and lm3s_spistatus() functions in your
- *      board-specific logic.  These functions will perform chip selection and
- *      status operations using GPIOs in the way your board is configured.
- *   3. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration, provide
- *      the lm3s_spicmddata() function in your board-specific logic.  This
- *      functions will perform cmd/data selection operations using GPIOs in
- *      the way your board is configured.
- *   4. Add a call to up_spiinitialize() in your low level application
- *      initialization logic
- *   5. 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).
- *
- ****************************************************************************/
-
-struct spi_dev_s;
-enum spi_dev_e;
-EXTERN void lm3s_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
-EXTERN uint8_t lm3s_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
-#ifdef CONFIG_SPI_CMDDATA
-EXTERN int lm3s_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
-#endif
-
-#undef EXTERN
-#if defined(__cplusplus)
-}
-#endif
-
-#endif /* __ASSEMBLY__ */
-#endif /* __ARCH_ARM_SRC_LM3S_LM3S_INTERNAL_H */
+#endif /* __ARCH_ARM_SRC_LM3S_CHIP_LM3S_PINMAP_H */
diff --git a/nuttx/arch/arm/src/lm3s/chip/lm_pinmap.h b/nuttx/arch/arm/src/lm3s/chip/lm_pinmap.h
new file mode 100644
index 000000000..b00a6e794
--- /dev/null
+++ b/nuttx/arch/arm/src/lm3s/chip/lm_pinmap.h
@@ -0,0 +1,69 @@
+/************************************************************************************
+ * arch/arm/src/lm3s/chip/lm_pinmap.h
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LM3S_CHIP_LM_PINMAP_H
+#define __ARCH_ARM_SRC_LM3S_CHIP_LM_PINMAP_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/* Include the memory map file for the specific Stellaris chip */
+
+#ifdef CONFIG_ARCH_CHIP_LM3S
+#  include "chip/lm3s_pinmap.h"
+#else
+#  error "Unsupported Stellaris PIN mapping"
+#endif
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+
+#endif /* __ARCH_ARM_SRC_LM3S_CHIP_LM_PINMAP_H */
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c b/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c
index 334a3930f..9d205b763 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_dumpgpio.c
@@ -48,7 +48,7 @@
 #include "up_arch.h"
 
 #include "chip.h"
-#include "lm3s_internal.h"
+#include "lm_gpio.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_ethernet.c b/nuttx/arch/arm/src/lm3s/lm3s_ethernet.c
index f7bbedb20..f44b6654f 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_ethernet.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_ethernet.c
@@ -58,7 +58,9 @@
 #include "chip.h"
 #include "up_arch.h"
 
-#include "lm3s_internal.h"
+#include "lm_gpio.h"
+#include "lm_ethernet.h"
+#include "chip/lm_pinmap.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_gpio.c b/nuttx/arch/arm/src/lm3s/lm3s_gpio.c
index c345d113c..dd005fdd1 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_gpio.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_gpio.c
@@ -50,7 +50,7 @@
 
 #include "up_arch.h"
 #include "os_internal.h"
-#include "lm3s_internal.h"
+#include "lm_gpio.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_gpioirq.c b/nuttx/arch/arm/src/lm3s/lm3s_gpioirq.c
index 7cc5fea40..511195f2d 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_gpioirq.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_gpioirq.c
@@ -50,7 +50,8 @@
 #include "up_arch.h"
 #include "os_internal.h"
 #include "irq_internal.h"
-#include "lm3s_internal.h"
+
+#include "lm_gpio.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_irq.c b/nuttx/arch/arm/src/lm3s/lm3s_irq.c
index aa0ed6c87..2f0b9fa72 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_irq.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_irq.c
@@ -51,7 +51,9 @@
 #include "up_arch.h"
 #include "os_internal.h"
 #include "up_internal.h"
-#include "lm3s_internal.h"
+
+#include "chip.h"
+#include "lm_gpio.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_lowputc.c b/nuttx/arch/arm/src/lm3s/lm3s_lowputc.c
index b1cb21b2c..bdbd5a906 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_lowputc.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_lowputc.c
@@ -46,7 +46,10 @@
 #include "up_arch.h"
 #include "up_internal.h"
 
-#include "lm3s_internal.h"
+#include "lm_gpio.h"
+#include "chip/lm_pinmap.h"
+
+#include "lm_lowputc.h"
 
 /**************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_ssi.c b/nuttx/arch/arm/src/lm3s/lm3s_ssi.c
index 8d1987992..8cd1cee07 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_ssi.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_ssi.c
@@ -56,7 +56,9 @@
 #include "up_arch.h"
 
 #include "chip.h"
-#include "lm3s_internal.h"
+#include "lm_gpio.h"
+#include "lm_ssi.h"
+#include "chip/lm_pinmap.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_start.c b/nuttx/arch/arm/src/lm3s/lm3s_start.c
index f3f762b52..341b82e50 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_start.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_start.c
@@ -49,7 +49,9 @@
 
 #include "up_arch.h"
 #include "up_internal.h"
-#include "lm3s_internal.h"
+
+#include "lm_lowputc.h"
+#include "lm_syscontrol.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_syscontrol.c b/nuttx/arch/arm/src/lm3s/lm3s_syscontrol.c
index e26789d32..3ad0cacb5 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_syscontrol.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_syscontrol.c
@@ -49,7 +49,8 @@
 
 #include "up_arch.h"
 #include "up_internal.h"
-#include "lm3s_internal.h"
+#include "chip.h"
+#include "lm_syscontrol.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm3s_timerisr.c b/nuttx/arch/arm/src/lm3s/lm3s_timerisr.c
index 4d42af597..9cd912249 100644
--- a/nuttx/arch/arm/src/lm3s/lm3s_timerisr.c
+++ b/nuttx/arch/arm/src/lm3s/lm3s_timerisr.c
@@ -51,7 +51,6 @@
 #include "up_arch.h"
 
 #include "chip.h"
-#include "lm3s_internal.h"
 
 /****************************************************************************
  * Pre-processor Definitions
diff --git a/nuttx/arch/arm/src/lm3s/lm_ethernet.h b/nuttx/arch/arm/src/lm3s/lm_ethernet.h
new file mode 100644
index 000000000..600955b95
--- /dev/null
+++ b/nuttx/arch/arm/src/lm3s/lm_ethernet.h
@@ -0,0 +1,103 @@
+/************************************************************************************
+ * arch/arm/src/lm3s/lm_ethernet.h
+ *
+ *   Copyright (C) 2009-2010, 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LM3S_LM_ETHERNET_H
+#define __ARCH_ARM_SRC_LM3S_LM_ETHERNET_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include "chip.h"
+
+#if LM3S_NETHCONTROLLERS > 1
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: lm3s_ethinitialize
+ *
+ * Description:
+ *   Initialize the Ethernet driver for one interface.  If the LM3S chip
+ *   supports multiple Ethernet controllers, then bould specific logic
+ *   must implement up_netinitialize() and call this function to initialize
+ *   the desiresed interfaces.
+ *
+ * Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int lm3s_ethinitialize(int intf);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* LM3S_NETHCONTROLLERS > 1 */
+#endif /* __ARCH_ARM_SRC_LM3S_LM_ETHERNET_H */
diff --git a/nuttx/arch/arm/src/lm3s/lm_gpio.h b/nuttx/arch/arm/src/lm3s/lm_gpio.h
new file mode 100644
index 000000000..1bfb79fc9
--- /dev/null
+++ b/nuttx/arch/arm/src/lm3s/lm_gpio.h
@@ -0,0 +1,223 @@
+/************************************************************************************
+ * arch/arm/src/lm3s/lm_gpio.h
+ *
+ *   Copyright (C) 2009-2010, 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LM3S_LM_GPIO_H
+#define __ARCH_ARM_SRC_LM3S_LM_GPIO_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "up_internal.h"
+#include "chip.h"
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/* Bit-encoded input to lm3s_configgpio() *******************************************/
+
+/* Encoding:
+ * FFFS SPPP IIIn nnnn nnnn nnnn VPPP PBBB
+ *
+ * These bits set the primary function of the pin:
+ * FFFn nnnn nnnn nnnn nnnn nnnn nnnn nnnn
+ */
+
+#define GPIO_FUNC_SHIFT               29                         /* Bit 31-29: GPIO function */
+#define GPIO_FUNC_MASK                (7 << GPIO_FUNC_SHIFT)     /* (See table 9-1 in data sheet) */
+#define GPIO_FUNC_INPUT               (0 << GPIO_FUNC_SHIFT)     /*   Digital GPIO input */
+#define GPIO_FUNC_OUTPUT              (1 << GPIO_FUNC_SHIFT)     /*   Digital GPIO output */
+#define GPIO_FUNC_ODINPUT             (2 << GPIO_FUNC_SHIFT)     /*   Open-drain GPIO input */
+#define GPIO_FUNC_ODOUTPUT            (3 << GPIO_FUNC_SHIFT)     /*   Open-drain GPIO output */
+#define GPIO_FUNC_PFODIO              (4 << GPIO_FUNC_SHIFT)     /*   Open-drain input/output (I2C) */
+#define GPIO_FUNC_PFINPUT             (5 << GPIO_FUNC_SHIFT)     /*   Digital input (Timer, CCP) */
+#define GPIO_FUNC_PFOUTPUT            (5 << GPIO_FUNC_SHIFT)     /*   Digital output (Timer, PWM, Comparator) */
+#define GPIO_FUNC_PFIO                (5 << GPIO_FUNC_SHIFT)     /*   Digital input/output (SSI, UART) */
+#define GPIO_FUNC_ANINPUT             (6 << GPIO_FUNC_SHIFT)     /*   Analog input (Comparator) */
+#define GPIO_FUNC_INTERRUPT           (7 << GPIO_FUNC_SHIFT)     /*   Interrupt function */
+#define GPIO_FUNC_MAX                 GPIO_FUNC_INTERRUPT
+
+/* That primary may be modified by the following options
+ * nnnS SPPP nnnn nnnn nnnn nnnn nnnn nnnn
+ */
+
+#define GPIO_STRENGTH_SHIFT           27                         /* Bits 28-27: Pad drive strength */
+#define GPIO_STRENGTH_MASK            (3 << GPIO_STRENGTH_SHIFT)
+#define GPIO_STRENGTH_2MA             (0 << GPIO_STRENGTH_SHIFT) /*   2mA pad drive strength */
+#define GPIO_STRENGTH_4MA             (1 << GPIO_STRENGTH_SHIFT) /*   4mA pad drive strength */
+#define GPIO_STRENGTH_8MA             (2 << GPIO_STRENGTH_SHIFT) /*   8mA pad drive strength */
+#define GPIO_STRENGTH_8MASC           (3 << GPIO_STRENGTH_SHIFT) /*   8mA Pad drive with slew rate control */
+#define GPIO_STRENGTH_MAX             GPIO_STRENGTH_8MASC
+
+#define GPIO_PADTYPE_SHIFT            24                         /* Bits 26-24: Pad type */
+#define GPIO_PADTYPE_MASK             (7 << GPIO_PADTYPE_SHIFT)
+#define GPIO_PADTYPE_STD              (0 << GPIO_PADTYPE_SHIFT)  /*   Push-pull */
+#define GPIO_PADTYPE_STDWPU           (1 << GPIO_PADTYPE_SHIFT)  /*   Push-pull with weak pull-up */
+#define GPIO_PADTYPE_STDWPD           (2 << GPIO_PADTYPE_SHIFT)  /*   Push-pull with weak pull-down */
+#define GPIO_PADTYPE_OD               (3 << GPIO_PADTYPE_SHIFT)  /*   Open-drain */
+#define GPIO_PADTYPE_ODWPU            (4 << GPIO_PADTYPE_SHIFT)  /*   Open-drain with weak pull-up */
+#define GPIO_PADTYPE_ODWPD            (5 << GPIO_PADTYPE_SHIFT)  /*   Open-drain with weak pull-down */
+#define GPIO_PADTYPE_ANALOG           (6 << GPIO_PADTYPE_SHIFT)  /*   Analog comparator */
+
+/* If the pin is an interrupt, then the following options apply
+ * nnnn nnnn IIIn nnnn nnnn nnnn nnnn nnnn
+ */
+
+#define GPIO_INT_SHIFT                21                         /* Bits 23-21: Interrupt type */
+#define GPIO_INT_MASK                 (7 << GPIO_INT_SHIFT)
+#define GPIO_INT_FALLINGEDGE          (0 << GPIO_INT_SHIFT)      /*   Interrupt on falling edge */
+#define GPIO_INT_RISINGEDGE           (1 << GPIO_INT_SHIFT)      /*   Interrupt on rising edge */
+#define GPIO_INT_BOTHEDGES            (2 << GPIO_INT_SHIFT)      /*   Interrupt on both edges */
+#define GPIO_INT_LOWLEVEL             (3 << GPIO_INT_SHIFT)      /*   Interrupt on low level */
+#define GPIO_INT_HIGHLEVEL            (4 << GPIO_INT_SHIFT)      /*   Interrupt on high level */
+
+/* If the pin is an GPIO digital output, then this identifies the initial output value:
+ * nnnn nnnn nnnn nnnn nnnn nnnn Vnnn nnnn
+ */
+
+#define GPIO_VALUE_SHIFT              7                          /* Bit 7: If output, inital value of output */
+#define GPIO_VALUE_MASK               (1 << GPIO_VALUE_SHIFT)
+#define GPIO_VALUE_ZERO               (0 << GPIO_VALUE_SHIFT)    /*   Initial value is zero */
+#define GPIO_VALUE_ONE                (1 << GPIO_VALUE_SHIFT)    /*   Initial value is one */
+
+/* This identifies the GPIO port
+ * nnnn nnnn nnnn nnnn nnnn nnnn nPPP Pnnn
+ */
+
+#define GPIO_PORT_SHIFT               3                          /* Bit 3-6:  Port number */
+#define GPIO_PORT_MASK                (15 << GPIO_PORT_SHIFT)
+#define GPIO_PORTA                    (0 << GPIO_PORT_SHIFT)     /*   GPIOA */
+#define GPIO_PORTB                    (1 << GPIO_PORT_SHIFT)     /*   GPIOB */
+#define GPIO_PORTC                    (2 << GPIO_PORT_SHIFT)     /*   GPIOC */
+#define GPIO_PORTD                    (3 << GPIO_PORT_SHIFT)     /*   GPIOD */
+#define GPIO_PORTE                    (4 << GPIO_PORT_SHIFT)     /*   GPIOE */
+#define GPIO_PORTF                    (5 << GPIO_PORT_SHIFT)     /*   GPIOF */
+#define GPIO_PORTG                    (6 << GPIO_PORT_SHIFT)     /*   GPIOG */
+#define GPIO_PORTH                    (7 << GPIO_PORT_SHIFT)     /*   GPIOH */
+#define GPIO_PORTJ                    (8 << GPIO_PORT_SHIFT)     /*   GPIOJ */
+
+/* This identifies the bit in the port:
+ * nnnn nnnn nnnn nnnn nnnn nnnn nnnn nBBB
+ */
+
+#define GPIO_NUMBER_SHIFT             0                           /* Bits 0-2: GPIO number: 0-7 */
+#define GPIO_NUMBER_MASK              (7 << GPIO_NUMBER_SHIFT)
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lm3s_configgpio
+ *
+ * Description:
+ *   Configure a GPIO pin based on bit-encoded description of the pin.
+ *
+ ****************************************************************************/
+
+int lm3s_configgpio(uint32_t cfgset);
+
+/****************************************************************************
+ * Name: lm3s_gpiowrite
+ *
+ * Description:
+ *   Write one or zero to the selected GPIO pin
+ *
+ ****************************************************************************/
+
+void lm3s_gpiowrite(uint32_t pinset, bool value);
+
+/****************************************************************************
+ * Name: lm3s_gpioread
+ *
+ * Description:
+ *   Read one or zero from the selected GPIO pin
+ *
+ ****************************************************************************/
+
+bool lm3s_gpioread(uint32_t pinset, bool value);
+
+/****************************************************************************
+ * Function:  lm3s_dumpgpio
+ *
+ * Description:
+ *   Dump all GPIO registers associated with the provided base address
+ *
+ ****************************************************************************/
+
+int lm3s_dumpgpio(uint32_t pinset, const char *msg);
+
+/****************************************************************************
+ * Name: gpio_irqinitialize
+ *
+ * Description:
+ *   Initialize all vectors to the unexpected interrupt handler
+ *
+ ****************************************************************************/
+
+int weak_function gpio_irqinitialize(void);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_LM3S_LM_GPIO_H */
diff --git a/nuttx/arch/arm/src/lm3s/lm_lowputc.h b/nuttx/arch/arm/src/lm3s/lm_lowputc.h
new file mode 100644
index 000000000..8e2858ebf
--- /dev/null
+++ b/nuttx/arch/arm/src/lm3s/lm_lowputc.h
@@ -0,0 +1,87 @@
+/************************************************************************************
+ * arch/arm/src/lm3s/lm3s_lowputc.h
+ *
+ *   Copyright (C) 2009-2010, 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LM3S_LM_LOWPUTC_H
+#define __ARCH_ARM_SRC_LM3S_LM_LOWPUTC_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_lowsetup
+ *
+ * Description:
+ *   Called at the very beginning of _start.  Performs low level initialization.
+ *
+ ****************************************************************************/
+
+void up_lowsetup(void);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_LM3S_LM_LOWPUTC_H */
diff --git a/nuttx/arch/arm/src/lm3s/lm_ssi.h b/nuttx/arch/arm/src/lm3s/lm_ssi.h
new file mode 100644
index 000000000..dd1e30817
--- /dev/null
+++ b/nuttx/arch/arm/src/lm3s/lm_ssi.h
@@ -0,0 +1,114 @@
+/************************************************************************************
+ * arch/arm/src/lm3s/lm_ssi.h
+ *
+ *   Copyright (C) 2009-2010, 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LM3S_LM_SSI_H
+#define __ARCH_ARM_SRC_LM3S_LM_SSI_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * The external functions, lm3s_spiselect, lm3s_spistatus, and
+ * lm3s_spicmddata must be provided by board-specific logic.  These are
+ * implementations of the select, status, and cmddata methods of the SPI
+ * interface defined by struct spi_ops_s (see include/nuttx/spi.h).
+ * All other methods (including up_spiinitialize()) are provided by common
+ * logic.  To use this common SPI logic on your board:
+ *
+ *   1. Provide logic in lm3s_boardinitialize() to configure SPI chip select
+ *      pins.
+ *   2. Provide lm3s_spiselect() and lm3s_spistatus() functions in your
+ *      board-specific logic.  These functions will perform chip selection and
+ *      status operations using GPIOs in the way your board is configured.
+ *   3. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration, provide
+ *      the lm3s_spicmddata() function in your board-specific logic.  This
+ *      functions will perform cmd/data selection operations using GPIOs in
+ *      the way your board is configured.
+ *   4. Add a call to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   5. 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).
+ *
+ ****************************************************************************/
+
+struct spi_dev_s;
+enum spi_dev_e;
+void lm3s_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
+uint8_t lm3s_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
+#ifdef CONFIG_SPI_CMDDATA
+int lm3s_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_LM3S_LM_SSI_H */
diff --git a/nuttx/arch/arm/src/lm3s/lm_syscontrol.h b/nuttx/arch/arm/src/lm3s/lm_syscontrol.h
new file mode 100644
index 000000000..7c49da565
--- /dev/null
+++ b/nuttx/arch/arm/src/lm3s/lm_syscontrol.h
@@ -0,0 +1,100 @@
+/************************************************************************************
+ * arch/arm/src/lm3s/lm3s_syscontrol.h
+ *
+ *   Copyright (C) 2009-2010, 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LM3S_LM_SYSCONTROL_H
+#define __ARCH_ARM_SRC_LM3S_LM_SYSCONTROL_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Inline Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lm3s_clockconfig
+ *
+ * Description:
+ *   Called to change to new clock based on desired rcc and rcc2 settings.
+ *   This is use to set up the initial clocking but can be used later to
+ *   support slow clocked, low power consumption modes.
+ *
+ ****************************************************************************/
+
+void lm3s_clockconfig(uint32_t newrcc, uint32_t newrcc2);
+
+/****************************************************************************
+ * Name: up_clockconfig
+ *
+ * Description:
+ *   Called early in the bootsequence (before .data and .bss are available)
+ *   in order to configure initial clocking.
+ *
+ ****************************************************************************/
+
+void up_clockconfig(void);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_LM3S_LM_SYSCONTROL_H */