Add basic framework for SAM3U

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2473 42af7a65-404d-4744-a932-0658087f49c3

6 files changed, 534 insertions, 0 deletions

diff --git a/nuttx/arch/arm/include/sam3u/irq.h b/nuttx/arch/arm/include/sam3u/irq.h
new file mode 100755
index 000000000..092953643
--- /dev/null
+++ b/nuttx/arch/arm/include/sam3u/irq.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+ * arch/arm/include/sam3u/irq.h
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/irq.h
+ */
+
+#ifndef __ARCH_ARM_INCLUDE_SAM3U_IRQ_H
+#define __ARCH_ARM_INCLUDE_SAM3U_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* SAM3U Interrupts */
+
+#define NR_IRQS (0) /* For now *.
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Inline functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_ARM_INCLUDE_SAM3U_IRQ_H */
+
diff --git a/nuttx/arch/arm/src/sam3u/Make.defs b/nuttx/arch/arm/src/sam3u/Make.defs
new file mode 100755
index 000000000..92891b668
--- /dev/null
+++ b/nuttx/arch/arm/src/sam3u/Make.defs
@@ -0,0 +1,49 @@
+############################################################################
+# arch/arm/src/sam3u/Make.defs
+#
+#   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+HEAD_ASRC	=
+
+CMN_ASRCS	= up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
+CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
+		  up_createstack.c up_mdelay.c up_udelay.c up_exit.c \
+		  up_idle.c up_initialize.c up_initialstate.c up_interruptcontext.c \
+		  up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
+		  up_releasepending.c up_releasestack.c up_reprioritizertr.c \
+		  up_schedulesigaction.c up_sigdeliver.c up_unblocktask.c \
+		  up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
+
+CHIP_ASRCS	= 
+CHIP_CSRCS	= sam3u_start.c
+
diff --git a/nuttx/arch/arm/src/sam3u/chip.h b/nuttx/arch/arm/src/sam3u/chip.h
new file mode 100755
index 000000000..749459ca9
--- /dev/null
+++ b/nuttx/arch/arm/src/sam3u/chip.h
@@ -0,0 +1,69 @@
+/************************************************************************************
+ * arch/arm/src/sam3u/chip.h
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_SAM3U_CHIP_H
+#define __ARCH_ARM_SRC_SAM3U_CHIP_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/* Get customizations for each supported chip */
+
+/* Include only the memory map.  Other chip hardware files should then include this
+ * file for the proper setup
+ */
+
+#include "sam3u_memorymap.h"
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#endif /* __ARCH_ARM_SRC_SAM3U_CHIP_H */
diff --git a/nuttx/arch/arm/src/sam3u/sam3u_internal.h b/nuttx/arch/arm/src/sam3u/sam3u_internal.h
new file mode 100755
index 000000000..a0ea45f02
--- /dev/null
+++ b/nuttx/arch/arm/src/sam3u/sam3u_internal.h
@@ -0,0 +1,112 @@
+/************************************************************************************
+ * arch/arm/src/sam3u/sam3u_internal.h
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_SAM3U_SAM3U_INTERNAL_H
+#define __ARCH_ARM_SRC_SAM3U_SAM3U_INTERNAL_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "up_internal.h"
+#include "chip.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Configuration ********************************************************************/
+
+/* NVIC priority levels *************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * 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: sam3u_lowsetup
+ *
+ * Description:
+ *   Called at the very beginning of _start.  Performs low level initialization.
+ *
+ ************************************************************************************/
+
+EXTERN void sam3u_lowsetup(void);
+
+/************************************************************************************
+ * Name: sam3u_clockconfig
+ *
+ * Description:
+ *   Called to change to new clock based on settings in board.h
+ *
+ ************************************************************************************/
+
+EXTERN void sam3u_clockconfig(void);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_SAM3U_SAM3U_INTERNAL_H */
diff --git a/nuttx/arch/arm/src/sam3u/sam3u_memorymap.h b/nuttx/arch/arm/src/sam3u/sam3u_memorymap.h
new file mode 100755
index 000000000..5092745d8
--- /dev/null
+++ b/nuttx/arch/arm/src/sam3u/sam3u_memorymap.h
@@ -0,0 +1,67 @@
+/************************************************************************************

+ * arch/arm/src/sam3u/sam3u_memorymap.h

+ *

+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.

+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions

+ * are met:

+ *

+ * 1. Redistributions of source code must retain the above copyright

+ *    notice, this list of conditions and the following disclaimer.

+ * 2. Redistributions in binary form must reproduce the above copyright

+ *    notice, this list of conditions and the following disclaimer in

+ *    the documentation and/or other materials provided with the

+ *    distribution.

+ * 3. Neither the name NuttX nor the names of its contributors may be

+ *    used to endorse or promote products derived from this software

+ *    without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

+ * POSSIBILITY OF SUCH DAMAGE.

+ *

+ ************************************************************************************/

+

+#ifndef __ARCH_ARM_SRC_SAM3U_SAM3U_MEMORYMAP_H

+#define __ARCH_ARM_SRC_SAM3U_SAM3U_MEMORYMAP_H

+

+/************************************************************************************

+ * Included Files

+ ************************************************************************************/

+

+#include <nuttx/config.h>

+

+#include "chip.h"

+

+/************************************************************************************

+ * Pre-processor Definitions

+ ************************************************************************************/

+

+/* FLASH and SRAM *******************************************************************/

+

+/* Register Base Addresses **********************************************************/

+

+/************************************************************************************

+ * Public Types

+ ************************************************************************************/

+

+/************************************************************************************

+ * Public Data

+ ************************************************************************************/

+

+/************************************************************************************

+ * Public Functions

+ ************************************************************************************/

+

+#endif /* __ARCH_ARM_SRC_SAM3U_SAM3U_MEMORYMAP_H */

diff --git a/nuttx/arch/arm/src/sam3u/sam3u_start.c b/nuttx/arch/arm/src/sam3u/sam3u_start.c
new file mode 100755
index 000000000..34b418cc3
--- /dev/null
+++ b/nuttx/arch/arm/src/sam3u/sam3u_start.c
@@ -0,0 +1,151 @@
+/****************************************************************************
+ * arch/arm/src/sam3u/sam3u_start.c
+ * arch/arm/src/chip/sam3u_start.c
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/init.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "up_internal.h"
+
+#include "sam3u_internal.h"
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: showprogress
+ *
+ * Description:
+ *   Print a character on the UART to show boot status.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_DEBUG
+#  define showprogress(c) up_lowputc(c)
+#else
+#  define showprogress(c)
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: _start
+ *
+ * Description:
+ *   This is the reset entry point.
+ *
+ ****************************************************************************/
+
+void __start(void)
+{
+  const uint32_t *src;
+  uint32_t *dest;
+
+  /* Configure the uart so that we can get debug output as soon as possible */
+
+  sam3u_clockconfig();
+  sam3u_lowsetup();
+  showprogress('A');
+
+  /* Clear .bss.  We'll do this inline (vs. calling memset) just to be
+   * certain that there are no issues with the state of global variables.
+   */
+
+  for (dest = &_sbss; dest < &_ebss; )
+    {
+      *dest++ = 0;
+    }
+  showprogress('B');
+
+  /* Move the intialized data section from his temporary holding spot in
+   * FLASH into the correct place in SRAM.  The correct place in SRAM is
+   * give by _sdata and _edata.  The temporary location is in FLASH at the
+   * end of all of the other read-only data (.text, .rodata) at _eronly.
+   */
+
+  for (src = &_eronly, dest = &_sdata; dest < &_edata; )
+    {
+      *dest++ = *src++;
+    }
+  showprogress('C');
+
+  /* Perform early serial initialization */
+
+#ifdef CONFIG_USE_EARLYSERIALINIT
+  up_earlyserialinit();
+#endif
+  showprogress('D');
+
+  /* Initialize onboard resources */
+
+  sam3u_boardinitialize();
+  showprogress('E');
+
+  /* Then start NuttX */
+
+  showprogress('\r');
+  showprogress('\n');
+  os_start();
+
+  /* Shouldn't get here */
+
+  for(;;);
+}