Adding struture for Hitachi SH-1

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1132 42af7a65-404d-4744-a932-0658087f49c3

12 files changed, 718 insertions, 0 deletions

diff --git a/nuttx/arch/sh/include/README.txt b/nuttx/arch/sh/include/README.txt
new file mode 100644
index 000000000..c07708aec
--- /dev/null
+++ b/nuttx/arch/sh/include/README.txt
@@ -0,0 +1,5 @@
+This directory contains header files common to all SH architectures.
+Sub-directories within this directory contain header files unique to
+specific SH chip architectures.  At configuration time, additional directories
+will be linked here: 'build' will be a link to the configs/*/include
+directory; 'chip' will be a link to the SH chip sub-directory.
diff --git a/nuttx/arch/sh/include/arch.h b/nuttx/arch/sh/include/arch.h
new file mode 100644
index 000000000..81853b12e
--- /dev/null
+++ b/nuttx/arch/sh/include/arch.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+ * arch/sh/include/arch.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/arch.h
+ */
+
+#ifndef __ARCH_SH_INCLUDE_ARCH_H
+#define __ARCH_SH_INCLUDE_ARCH_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Inline functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ARCH_SH_INCLUDE_ARCH_H */
diff --git a/nuttx/arch/sh/include/irq.h b/nuttx/arch/sh/include/irq.h
new file mode 100644
index 000000000..075e0317a
--- /dev/null
+++ b/nuttx/arch/sh/include/irq.h
@@ -0,0 +1,229 @@
+/****************************************************************************
+ * arch/sh/include/irq.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt 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_SH_INCLUDE_IRQ_H
+#define __ARCH_SH_INCLUDE_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/irq.h>
+#include <arch/chip/irq.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* IRQ Stack Frame Format:
+ *
+ * Context is always saved/restored in the same way:
+ *
+ *   (1) stmia rx, {r0-r14}
+ *   (2) then the PC and CPSR
+ *
+ * This results in the following set of indices that
+ * can be used to access individual registers in the
+ * xcp.regs array:
+ */
+
+#define REG_R0              (0)
+#define REG_R1              (1)
+#define REG_R2              (2)
+#define REG_R3              (3)
+#define REG_R4              (4)
+#define REG_R5              (5)
+#define REG_R6              (6)
+#define REG_R7              (7)
+#define REG_R8              (8)
+#define REG_R9              (9)
+#define REG_R10             (10)
+#define REG_R11             (11)
+#define REG_R12             (12)
+#define REG_R13             (13)
+#define REG_R14             (14)
+#define REG_R15             (15)
+#define REG_CPSR            (16)
+
+#define XCPTCONTEXT_REGS    (17)
+#define XCPTCONTEXT_SIZE    (4 * XCPTCONTEXT_REGS)
+
+#define REG_A1              REG_R0
+#define REG_A2              REG_R1
+#define REG_A3              REG_R2
+#define REG_A4              REG_R3
+#define REG_V1              REG_R4
+#define REG_V2              REG_R5
+#define REG_V3              REG_R6
+#define REG_V4              REG_R7
+#define REG_V5              REG_R8
+#define REG_V6              REG_R9
+#define REG_V7              REG_R10
+#define REG_SB              REG_R9
+#define REG_SL              REG_R10
+#define REG_FP              REG_R11
+#define REG_IP              REG_R12
+#define REG_SP              REG_R13
+#define REG_LR              REG_R14
+#define REG_PC              REG_R15
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* This struct defines the way the registers are stored.  We
+ * need to save:
+ *
+ *  1	CPSR
+ *  7	Static registers, v1-v7 (aka r4-r10)
+ *  1	Frame pointer, fp (aka r11)
+ *  1	Stack pointer, sp (aka r13)
+ *  1	Return address, lr (aka r14)
+ * ---
+ * 11	(XCPTCONTEXT_USER_REG)
+ *
+ * On interrupts, we also need to save:
+ *  4	Volatile registers, a1-a4 (aka r0-r3)
+ *  1	Scratch Register, ip (aka r12)
+ *---
+ *  5	(XCPTCONTEXT_IRQ_REGS)
+ *
+ * For a total of 17 (XCPTCONTEXT_REGS)
+ */
+
+#ifndef __ASSEMBLY__
+struct xcptcontext
+{
+  /* The following function pointer is non-zero if there
+   * are pending signals to be processed.
+   */
+
+#ifndef CONFIG_DISABLE_SIGNALS
+  void *sigdeliver; /* Actual type is sig_deliver_t */
+#endif
+
+  /* These are saved copies of LR and CPSR used during
+   * signal processing.
+   */
+
+  uint32 saved_pc;
+  uint32 saved_cpsr;
+
+  /* Register save area */
+
+  uint32 regs[XCPTCONTEXT_REGS];
+};
+#endif
+
+/****************************************************************************
+ * Inline functions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* Save the current interrupt enable state & disable IRQs */
+
+static inline irqstate_t irqsave(void)
+{
+  unsigned int flags;
+  unsigned int temp;
+  __asm__ __volatile__
+    (
+     "\tmrs    %0, cpsr\n"
+     "\torr    %1, %0, #128\n"
+     "\tmsr    cpsr_c, %1"
+     : "=r" (flags), "=r" (temp)
+     :
+     : "memory");
+  return flags;
+}
+
+/* Restore saved IRQ & FIQ state */
+
+static inline void irqrestore(irqstate_t flags)
+{
+  __asm__ __volatile__
+    (
+     "msr    cpsr_c, %0"
+     :
+     : "r" (flags)
+     : "memory");
+}
+
+static inline void system_call(swint_t func, int parm1,
+			       int parm2, int parm3)
+{
+  __asm__ __volatile__
+    (
+     "mov\tr0,%0\n\t"
+     "mov\tr1,%1\n\t"
+     "mov\tr2,%2\n\t"
+     "mov\tr3,%3\n\t"
+     "swi\t0x900001\n\t"
+     :
+     : "r" ((long)(func)),  "r" ((long)(parm1)),
+       "r" ((long)(parm2)), "r" ((long)(parm3))
+     : "r0", "r1", "r2", "r3", "lr");
+}
+#endif
+
+/****************************************************************************
+ * 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_SH_INCLUDE_IRQ_H */
+
diff --git a/nuttx/arch/sh/include/limits.h b/nuttx/arch/sh/include/limits.h
new file mode 100644
index 000000000..16e63f551
--- /dev/null
+++ b/nuttx/arch/sh/include/limits.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+ * arch/sh/include/limits.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_SH_INCLUDE_LIMITS_H
+#define __ARCH_SH_INCLUDE_LIMITS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define CHAR_BIT        8
+#define SCHAR_MIN	0x80
+#define SCHAR_MAX	0x7f
+#define UCHAR_MAX	0xff
+
+/* These could be different on machines where char is unsigned */
+
+#define CHAR_MIN	SCHAR_MIN
+#define CHAR_MAX	SCHAR_MAX
+
+#define SHRT_MIN	0x8000
+#define SHRT_MAX	0x7fff
+#define USHRT_MAX	0xffff
+
+#define INT_MIN         0x80000000
+#define INT_MAX         0x7fffffff
+#define UINT_MAX	0xffffffff
+
+/* These change on 32-bit and 64-bit platforms */
+
+#define LONG_MAX	0x80000000
+#define LONG_MIN	0x7fffffff
+#define ULONG_MAX	0xffffffff
+
+#define LLONG_MAX	0x8000000000000000
+#define LLONG_MIN	0x7fffffffffffffff
+#define ULLONG_MAX	0xffffffffffffffff
+
+#endif /* __ARCH_SH_INCLUDE_LIMITS_H */
diff --git a/nuttx/arch/sh/include/serial.h b/nuttx/arch/sh/include/serial.h
new file mode 100644
index 000000000..2790b0871
--- /dev/null
+++ b/nuttx/arch/sh/include/serial.h
@@ -0,0 +1,55 @@
+/****************************************************************************
+ * arch/sh/include/serial.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_SH_INCLUDE_SERIAL_H
+#define __ARCH_SH_INCLUDE_SERIAL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#endif /* __ARCH_SH_INCLUDE_SERIAL_H */
diff --git a/nuttx/arch/sh/include/sh1/README.txt b/nuttx/arch/sh/include/sh1/README.txt
new file mode 100644
index 000000000..dabd6e83a
--- /dev/null
+++ b/nuttx/arch/sh/include/sh1/README.txt
@@ -0,0 +1,3 @@
+This directory contains header files common to all SH architectures.
+Sub-directories within this directory contain header files unique to
+specific SH architectures.
diff --git a/nuttx/arch/sh/include/sh1/irq.h b/nuttx/arch/sh/include/sh1/irq.h
new file mode 100644
index 000000000..795289c6f
--- /dev/null
+++ b/nuttx/arch/sh/include/sh1/irq.h
@@ -0,0 +1,120 @@
+/************************************************************************************
+ * arch/sh/include/sh1/irq.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/irq.h
+ */
+
+#ifndef __ARCH_SH_INCLUDE_SH1_IRQ_H
+#define __ARCH_SH_INCLUDE_SH1_IRQ_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* IRQ channels */
+
+#define STR71X_IRQ_T0TIMI     (0)
+#define STR71X_IRQ_FLASH      (1)
+#define STR71X_IRQ_RCCU       (2)
+#define STR71X_IRQ_RTC        (3)
+#define STR71X_IRQ_WDG        (4)
+#define STR71X_IRQ_XTI        (5)
+#define STR71X_IRQ_USBHP      (6)
+#define STR71X_IRQ_I2C0ITERR  (7)
+#define STR71X_IRQ_I2C1ITERR  (8)
+#define STR71X_IRQ_UART0      (9)
+#define STR71X_IRQ_UART1     (10)
+#define STR71X_IRQ_UART2     (11)
+#define STR71X_IRQ_UART3     (12)
+#define STR71X_IRQ_SPI0      (13)
+#define STR71X_IRQ_SPI1      (14)
+#define STR71X_IRQ_I2C0      (15)
+#define STR71X_IRQ_I2C1      (16)
+#define STR71X_IRQ_CAN       (17)
+#define STR71X_IRQ_ADC       (18)
+#define STR71X_IRQ_T1TIMI    (19)
+#define STR71X_IRQ_T2TIMI    (20)
+#define STR71X_IRQ_T3TIMI    (21)
+#define STR71X_IRQ_HDLC      (25)
+#define STR71X_IRQ_USBLP     (26)
+#define STR71X_IRQ_T0TOI     (29)
+#define STR71X_IRQ_T0OC1     (30)
+#define STR71X_IRQ_T0OC2     (31)
+
+#define STR71X_IRQ_SYSTIMER  STR71X_IRQ_T0TIMI
+#define NR_IRQS               32
+
+/* FIQ channels */
+
+#define STR71X_FIQ_T0TIMI     (0X00000001)
+#define STR71X_FIQ_WDG        (0X00000002)
+#define STR71X_FIQ_WDGT0TIMIS (0X00000003)
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_SH_INCLUDE_SH1_IRQ_H */
+
diff --git a/nuttx/arch/sh/include/types.h b/nuttx/arch/sh/include/types.h
new file mode 100644
index 000000000..531632620
--- /dev/null
+++ b/nuttx/arch/sh/include/types.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+ * arch/sh/include/types.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through sys/types.h
+ */
+
+#ifndef __ARCH_SH_INCLUDE_TYPES_H
+#define __ARCH_SH_INCLUDE_TYPES_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Declarations
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* These are the sizes of the standard GNU types */
+
+typedef char sbyte;
+typedef unsigned char ubyte;
+typedef unsigned char uint8;
+typedef unsigned char boolean;
+typedef short sint16;
+typedef unsigned short uint16;
+typedef int sint32;
+typedef unsigned int uint32;
+typedef long long sint64;
+typedef unsigned long long uint64;
+
+/* This is the size of the interrupt state save returned by
+ * irqsave()
+ */
+
+typedef unsigned int irqstate_t;
+
+#endif /* __ASSEMBLY__ */
+
+/****************************************************************************
+ * Global Function Prototypes
+ ****************************************************************************/
+
+#endif /* __ARCH_SH_INCLUDE_TYPES_H */
diff --git a/nuttx/arch/sh/include/watchdog.h b/nuttx/arch/sh/include/watchdog.h
new file mode 100644
index 000000000..2b70dfc88
--- /dev/null
+++ b/nuttx/arch/sh/include/watchdog.h
@@ -0,0 +1,59 @@
+/****************************************************************************
+ * arch/sh/include/watchdog.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_SH_INCLUDE_WATCHDOG_H
+#define __ARCH_SH_INCLUDE_WATCHDOG_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#endif /* __ARCH_SH_INCLUDE_WATCHDOG_H */
diff --git a/nuttx/arch/sh/src/README.txt b/nuttx/arch/sh/src/README.txt
new file mode 100644
index 000000000..3cbd17c0f
--- /dev/null
+++ b/nuttx/arch/sh/src/README.txt
@@ -0,0 +1,7 @@
+This directory provides a build area for all SH architectures.
+The 'common' subdirectory contains source files shared by all SH
+architectures; Source files unique to a specific SH chip
+architecture are contained in a subdirectory named after the chip.
+At configuration time, additional directories will be linked here:
+'build' will be a link to the configs/*/src directory; 'chip' will
+be a link to the SH chip sub-directory.
diff --git a/nuttx/arch/sh/src/common/README.txt b/nuttx/arch/sh/src/common/README.txt
new file mode 100644
index 000000000..cd2bc8b53
--- /dev/null
+++ b/nuttx/arch/sh/src/common/README.txt
@@ -0,0 +1,2 @@
+This directory contains source files that are common to all
+SH architectures.
\ No newline at end of file
diff --git a/nuttx/arch/sh/src/sh1/README.txt b/nuttx/arch/sh/src/sh1/README.txt
new file mode 100644
index 000000000..d65395656
--- /dev/null
+++ b/nuttx/arch/sh/src/sh1/README.txt
@@ -0,0 +1,2 @@
+This directory contains source files that are unique to the SH-1
+chip architecture.