86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/****************************************************************************
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* sched/irq/irq_initialize.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/arch.h>
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#include <nuttx/irq.h>
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#include "irq/irq.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* This is the number of entries in the interrupt vector table */
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#ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
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# define TAB_SIZE CONFIG_ARCH_NUSER_INTERRUPTS
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#else
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# define TAB_SIZE NR_IRQS
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* This is the interrupt vector table */
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#ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
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struct irq_info_s g_irqvector[CONFIG_ARCH_NUSER_INTERRUPTS];
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#else
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struct irq_info_s g_irqvector[NR_IRQS];
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: irq_initialize
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*
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* Description:
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* Configure the IRQ subsystem
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*
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****************************************************************************/
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void irq_initialize(void)
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{
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int i;
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/* Point all interrupt vectors to the unexpected interrupt */
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for (i = 0; i < TAB_SIZE; i++)
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{
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g_irqvector[i].handler = irq_unexpected_isr;
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}
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#ifdef CONFIG_IRQCHAIN
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/* Initialize IRQ chain support */
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irqchain_initialize();
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#endif
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up_irqinitialize();
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}
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