Common ARM support

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@187 42af7a65-404d-4744-a932-0658087f49c3

8 files changed, 826 insertions, 0 deletions

diff --git a/nuttx/arch/arm/include/arch.h b/nuttx/arch/arm/include/arch.h
new file mode 100644
index 000000000..a64ecb5e9
--- /dev/null
+++ b/nuttx/arch/arm/include/arch.h
@@ -0,0 +1,80 @@
+/************************************************************
+ * arch/arch.h
+ *
+ *   Copyright (C) 2007 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/arch.h
+ */
+
+#ifndef __ARCH_ARCH_H
+#define __ARCH_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_ARCH_H */
+
diff --git a/nuttx/arch/arm/include/c5471/irq.h b/nuttx/arch/arm/include/c5471/irq.h
new file mode 100644
index 000000000..ee1c6ebd4
--- /dev/null
+++ b/nuttx/arch/arm/include/c5471/irq.h
@@ -0,0 +1,105 @@
+/************************************************************
+ * arch/c5471/irq.h
+ *
+ *   Copyright (C) 2007 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_C5471_IRQ_H
+#define __ARCH_C5471_IRQ_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/* C5471 Interrupts */
+
+#define C5471_IRQ_TIMER0         0
+#define C5471_IRQ_TIMER1         1
+#define C5471_IRQ_TIMER2         2
+#define C5471_IRQ_GPIO0          3
+#define C5471_IRQ_ETHER          4
+#define C5471_IRQ_KBGPIO_0_7     5
+#define C5471_IRQ_UART           6
+#define C5471_IRQ_UART_IRDA      7
+#define C5471_IRQ_KBGPIO_8_15    8
+#define C5471_IRQ_GPIO3          9
+#define C5471_IRQ_GPIO2         10
+#define C5471_IRQ_I2C           11
+#define C5471_IRQ_GPIO1         12
+#define C5471_IRQ_SPI           13
+#define C5471_IRQ_GPIO_4_19     14
+#define C5471_IRQ_API           15
+
+#define C5471_IRQ_WATCHDOG      C5471_IRQ_TIMER0
+#define C5471_IRQ_SYSTIMER      C5471_IRQ_TIMER2
+#define NR_IRQS                 (C5471_IRQ_API+1)
+
+/************************************************************
+ * 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_C5471_IRQ_H */
+
diff --git a/nuttx/arch/arm/include/dm320/irq.h b/nuttx/arch/arm/include/dm320/irq.h
new file mode 100644
index 000000000..424cffab3
--- /dev/null
+++ b/nuttx/arch/arm/include/dm320/irq.h
@@ -0,0 +1,134 @@
+/************************************************************
+ * arch/dm320/irq.h
+ *
+ *   Copyright (C) 2007 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_DM320_IRQ_H
+#define __ARCH_DM320_IRQ_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/* DM320 Interrupts */
+
+#define DM320_IRQ_TMR0      0 /* IRQ0:  Timer 0 Interrupt */
+#define DM320_IRQ_TMR1      1 /* IRQ1:  Timer 1 Interrupt */
+#define DM320_IRQ_TMR2      2 /* IRQ2:  Timer 2 Interrupt (CCD timer 0) */
+#define DM320_IRQ_TMR3      3 /* IRQ3:  Timer 3 Interrupt (CCD timer 1) */
+#define DM320_IRQ_CCDVD0    4 /* IRQ4:  CCD VD Interrupt #0 */
+#define DM320_IRQ_CCDVD1    5 /* IRQ5:  CCD VD Interrupt #1 */
+#define DM320_IRQ_CCDWEN    6 /* IRQ6:  CCD WEN Interrupt */
+#define DM320_IRQ_VENC      7 /* IRQ7:  Video Encoder Interrupt */
+#define DM320_IRQ_SP0       8 /* IRQ8:  Serial Port 0 Interrupt (with DMA) */
+#define DM320_IRQ_SP1       9 /* IRQ9:  Serial Port 1 Interrupt */
+#define DM320_IRQ_EXTHOST  10 /* IRQ10: External host interrupt */
+#define DM320_IRQ_IMGBUF   11 /* IRQ11: Image Buffer */
+#define DM320_IRQ_UART0    12 /* IRQ12: UART0 Interrupt */
+#define DM320_IRQ_UART1    13 /* IRQ13: UART1 Interrupt */
+#define DM320_IRQ_USB0     14 /* IRQ14: USB 0 Interrupt (DMA) */
+#define DM320_IRQ_USB1     15 /* IRQ15: USB 1 Interrupt (Core) */
+#define DM320_IRQ_VLYNQ    16 /* IRQ16: VLYNQ Interrupt */
+#define DM320_IRQ_MTC0     17 /* IRQ17: Memory Traffic Controller 0 (DMA) */
+#define DM320_IRQ_MTC1     18 /* IRQ18: Memory Traffic Controller 1 (CFC_RDY) */
+#define DM320_IRQ_MMCSD0   19 /* IRQ19: MMC/SD or MS 0 Interrupt */
+#define DM320_IRQ_MMCSD1   20 /* IRQ20: MMC/SD or MS 1 Interrupt */
+#define DM320_IRQ_EXT0     21 /* IRQ21: External Interrupt #0 (GIO0) */
+#define DM320_IRQ_EXT1     22 /* IRQ22: External Interrupt #1 (GIO1) */
+#define DM320_IRQ_EXT2     23 /* IRQ23: External Interrupt #2 (GIO2) */
+#define DM320_IRQ_EXT3     24 /* IRQ24: External Interrupt #3 (GIO3) */
+#define DM320_IRQ_EXT4     25 /* IRQ25: External Interrupt #4 (GIO4) */
+#define DM320_IRQ_EXT5     26 /* IRQ26: External Interrupt #5 (GIO5) */
+#define DM320_IRQ_EXT6     27 /* IRQ27: External Interrupt #6 (GIO6) */
+#define DM320_IRQ_EXT7     28 /* IRQ28: External Interrupt #7 (GIO7) */
+#define DM320_IRQ_EXT8     29 /* IRQ29: External Interrupt #8 (GIO8) */
+#define DM320_IRQ_EXT9     30 /* IRQ30: External Interrupt #9 (GIO9) */
+#define DM320_IRQ_EXT10    31 /* IRQ31: External Interrupt #10 (GIO10) */
+#define DM320_IRQ_EXT11    32 /* IRQ32: External Interrupt #11 (GIO11) */
+#define DM320_IRQ_EXT12    33 /* IRQ33: External Interrupt #12 (GIO12) */
+#define DM320_IRQ_EXT13    34 /* IRQ34: External Interrupt #13 (GIO13) */
+#define DM320_IRQ_EXT14    35 /* IRQ35: External Interrupt #14 (GIO14) */
+#define DM320_IRQ_EXT15    36 /* IRQ36: External Interrupt #15 (GIO15) */
+#define DM320_IRQ_PREV0    37 /* IRQ37: Preview Engine 0 (Preview Over) */
+#define DM320_IRQ_PREV1    38 /* IRQ38: Preview Engine 1 (Preview Historgram Over) */
+#define DM320_IRQ_WDT      39 /* IRQ39: Watchdog Timer Interrupt */
+#define DM320_IRQ_I2C      40 /* IRQ40: I2C Interrupt */
+#define DM320_IRQ_CLKC     41 /* IRQ41: Clock controller Interrupt (wake up) */
+#define DM320_IRQ_E2ICE    42 /* IRQ42: Embedded ICE Interrupt */
+#define DM320_IRQ_ARMCOMRX 43 /* IRQ43: ARMCOMM Receive Interrupt */
+#define DM320_IRQ_ARMCOMTX 44 /* IRQ44: ARMCOMM Transmit Interrupt */
+#define DM320_IRQ_RSV      45 /* IRQ45: Reserved Interrupt */
+
+#define DM320_IRQ_SYSTIMER DM320_IRQ_TMR0
+#define NR_IRQS            (DM320_IRQ_RSV+1)
+
+/************************************************************
+ * 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_DM320_IRQ_H */
+
diff --git a/nuttx/arch/arm/include/irq.h b/nuttx/arch/arm/include/irq.h
new file mode 100644
index 000000000..c838ad402
--- /dev/null
+++ b/nuttx/arch/arm/include/irq.h
@@ -0,0 +1,226 @@
+/************************************************************
+ * arch/irq.h
+ *
+ *   Copyright (C) 2007 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_IRQ_H
+#define __ARCH_IRQ_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+#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.
+   */
+
+  void *sigdeliver; /* Actual type is sig_deliver_t */
+
+  /* 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_IRQ_H */
+
diff --git a/nuttx/arch/arm/include/limits.h b/nuttx/arch/arm/include/limits.h
new file mode 100644
index 000000000..a692c9c36
--- /dev/null
+++ b/nuttx/arch/arm/include/limits.h
@@ -0,0 +1,75 @@
+/************************************************************
+ * limits.h
+ *
+ *   Copyright (C) 2007 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.
+ *
+ ************************************************************/
+
+#ifndef __ARCH_LIMITS_H
+#define __ARCH_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_LIMITS_H */
diff --git a/nuttx/arch/arm/include/serial.h b/nuttx/arch/arm/include/serial.h
new file mode 100644
index 000000000..1439300b0
--- /dev/null
+++ b/nuttx/arch/arm/include/serial.h
@@ -0,0 +1,61 @@
+/************************************************************
+ * arch/serial.h
+ *
+ *   Copyright (C) 2007 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.
+ *
+ ************************************************************/
+
+#ifndef __ARCH_SERIAL_H
+#define __ARCH_SERIAL_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/* IOCTL commands supported by the ARM serial driver */
+
+#define TIOCSBRK        0x5401  /* BSD compatibility */
+#define TIOCCBRK        0x5402  /* " " "           " */
+#define TIOCSERGSTRUCT  0x5403  /* Get up_dev_t for port */
+
+/************************************************************
+ * Public Data
+ ************************************************************/
+
+/************************************************************
+ * Public Functions
+ ************************************************************/
+
+#endif /* __ARCH_SERIAL_H */
diff --git a/nuttx/arch/arm/include/types.h b/nuttx/arch/arm/include/types.h
new file mode 100644
index 000000000..760790327
--- /dev/null
+++ b/nuttx/arch/arm/include/types.h
@@ -0,0 +1,82 @@
+/************************************************************
+ * arch/types.h
+ *
+ *   Copyright (C) 2007 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 sys/types.h
+ */
+
+#ifndef __ARCH_TYPES_H
+#define __ARCH_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_TYPES_H */
diff --git a/nuttx/arch/arm/include/watchdog.h b/nuttx/arch/arm/include/watchdog.h
new file mode 100644
index 000000000..dcf5e8f67
--- /dev/null
+++ b/nuttx/arch/arm/include/watchdog.h
@@ -0,0 +1,63 @@
+/************************************************************
+ * watchdog.h
+ *
+ *   Copyright (C) 2007 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.
+ *
+ ************************************************************/
+
+#ifndef __ARCH_WATCHDOG_H
+#define __ARCH_WATCHDOG_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/* IOCTL commands supported by the C5471 watchdog driver */
+
+#define WDIOC_KEEPALIVE 0x5701  /* Restart the watchdog timer */
+
+/************************************************************
+ * Private Data
+ ************************************************************/
+
+/************************************************************
+ * Private Functions
+ ************************************************************/
+
+/************************************************************
+ * Public Functions
+ ************************************************************/
+
+#endif /* __ARCH_WATCHDOG_H */