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/************************************************************************************
* arch/arm/src/armv7-m/ram_vectors.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_COMMON_ARMV7_M_RAM_VECTORS_H
#define __ARCH_ARM_SRC_COMMON_ARMV7_M_RAM_VECTORS_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/* If CONFIG_ARMV7M_CMNVECTOR is defined then the number of peripheral interrupts
* is provided in chip.h.
*/
#include "chip.h"
#include "up_internal.h"
#ifdef CONFIG_ARCH_RAMVECTORS
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* This logic currently only works if CONFIG_ARMV7M_CMNVECTOR is defined. That is
* because CONFIG_ARMV7M_CMNVECTOR is needed to induce chip.h into giving us the
* number of peripheral interrupts. "Oh want a tangled web we weave..."
*/
#ifndef CONFIG_ARMV7M_CMNVECTOR
# error "This logic requires CONFIG_ARMV7M_CMNVECTOR"
#endif
/* This, then is the size of the vector table (in 4-byte entries). This size
* includes the IDLE stack pointer which lies at the beginning of
* the table.
*/
#define ARMV7M_VECTAB_SIZE (ARMV7M_PERIPHERAL_INTERRUPTS + 16)
/************************************************************************************
* Public Data
************************************************************************************/
/* If CONFIG_ARCH_RAMVECTORS is defined, then the ARM logic must provide
* ARM-specific implementations of irq_initialize(), irq_attach(), and
* irq_dispatch. In this case, it is also assumed that the ARM vector
* table resides in RAM, has the the name up_ram_vectors, and has been
* properly positioned and aligned in memory by the linker script.
*/
extern up_vector_t g_ram_vectors[ARMV7M_VECTAB_SIZE]
__attribute__((section(".ram_vectors")));
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/****************************************************************************
* Name: up_ramvec_initialize
*
* Description:
* Copy vectors to RAM an configure the NVIC to use the RAM vectors.
*
****************************************************************************/
void up_ramvec_initialize(void);
/****************************************************************************
* Name: exception_common
*
* Description:
* This is the default, common vector handling entrypoint.
*
****************************************************************************/
void exception_common(void);
/****************************************************************************
* Name: up_ramvec_attach
*
* Description:
* Configure the ram vector table so that IRQ number 'irq' will be
* dipatched by hardware to 'vector'
*
****************************************************************************/
int up_ramvec_attach(int irq, up_vector_t vector);
#endif /* CONFIG_ARCH_RAMVECTORS */
#endif /* __ARCH_ARM_SRC_COMMON_ARMV7_M_RAM_VECTORS_H */
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