forked from Imagelibrary/rtems
1e55619882
* Makefile.am, irq/irq_init.c: use vector/interrupt support from libcpu/powerpc/new-exceptions/bspsupport.
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/* irq_init.c
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*
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* This file contains the implementation of rtems initialization
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* related to interrupt handling.
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*
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* CopyRight (C) 1999 valette@crf.canon.fr
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*
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* Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com>
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* to make it valid for MVME2300 Motorola boards.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* irq_init.c,v 1.6.2.5 2003/09/04 18:45:20 joel Exp
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*/
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#include <libcpu/io.h>
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#include <libcpu/spr.h>
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#include <bsp/irq.h>
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#include <bsp.h>
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#include <libcpu/raw_exception.h>
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#include <rtems/bspIo.h>
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/*
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* default on/off function
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*/
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static void nop_func(){}
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/*
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* default isOn function
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*/
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static int not_connected() {return 0;}
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static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER];
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static rtems_irq_global_settings initial_config;
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static rtems_irq_connect_data defaultIrq = {
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/* vectorIdex, hdl , handle , on , off , isOn */
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0, nop_func , NULL , nop_func , nop_func , not_connected
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};
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static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={
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/*
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* Processor exceptions handled as interrupts
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*/
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0
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};
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/*
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* This code assumes the exceptions management setup has already
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* been done. We just need to replace the exceptions that will
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* be handled like interrupt. On mcp750/mpc750 and many PPC processors
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* this means the decrementer exception and the external exception.
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*/
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void BSP_rtems_irq_mng_init(unsigned cpuId)
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{
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int i;
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/*
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* First initialize the Interrupt management hardware
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*/
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/*
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* Initialize Rtems management interrupt table
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*/
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/*
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* re-init the rtemsIrq table
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*/
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for (i = 0; i < BSP_IRQ_NUMBER; i++) {
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rtemsIrq[i] = defaultIrq;
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rtemsIrq[i].name = i;
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}
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/*
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* Init initial Interrupt management config
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*/
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initial_config.irqNb = BSP_IRQ_NUMBER;
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initial_config.defaultEntry = defaultIrq;
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initial_config.irqHdlTbl = rtemsIrq;
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initial_config.irqBase = BSP_LOWEST_OFFSET;
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initial_config.irqPrioTbl = irqPrioTable;
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if (!BSP_rtems_irq_mngt_set(&initial_config)) {
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/*
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* put something here that will show the failure...
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*/
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BSP_panic(
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"Unable to initialize RTEMS interrupt Management!!! System locked\n"
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);
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}
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#ifdef TRACE_IRQ_INIT
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printk("RTEMS IRQ management is now operationnal\n");
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#endif
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}
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