forked from Imagelibrary/rtems
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/* irq_init.c
|
|
*
|
|
* This file contains the implementation of rtems initialization
|
|
* related to interrupt handling.
|
|
*
|
|
* CopyRight (C) 1999 valette@crf.canon.fr
|
|
*
|
|
* Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com>
|
|
* to make it valid for MVME2300 Motorola boards.
|
|
*
|
|
* Modified by T. Straumann for the 'beatnik' BSP.
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rtems.org/license/LICENSE.
|
|
*/
|
|
|
|
#include <rtems.h>
|
|
#include <bsp.h>
|
|
#include <bsp/irq.h>
|
|
#include <bsp/vectors.h>
|
|
#include <rtems/bspIo.h>
|
|
|
|
#if 0
|
|
#include <libcpu/io.h>
|
|
#include <libcpu/spr.h>
|
|
#include <bsp/pci.h>
|
|
#include <bsp/residual.h>
|
|
#include <bsp/openpic.h>
|
|
#include <bsp/irq.h>
|
|
#include <bsp.h>
|
|
#include <bsp/motorola.h>
|
|
#endif
|
|
|
|
/*
|
|
#define SHOW_ISA_PCI_BRIDGE_SETTINGS
|
|
*/
|
|
|
|
extern unsigned int external_exception_vector_prolog_code_size[];
|
|
extern void external_exception_vector_prolog_code(void);
|
|
extern unsigned int decrementer_exception_vector_prolog_code_size[];
|
|
extern void decrementer_exception_vector_prolog_code(void);
|
|
|
|
/*
|
|
* default handler
|
|
*/
|
|
static void nop_func(void *arg){}
|
|
|
|
static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER];
|
|
static rtems_irq_global_settings initial_config;
|
|
static rtems_irq_prio rtemsPrioTbl[BSP_IRQ_NUMBER];
|
|
static rtems_irq_connect_data defaultIrq = {
|
|
name: 0,
|
|
hdl: nop_func,
|
|
handle: 0,
|
|
on: 0,
|
|
off: 0,
|
|
isOn: 0
|
|
};
|
|
|
|
|
|
/*
|
|
* This code assumes the exceptions management setup has already
|
|
* been done. We just need to replace the exceptions that will
|
|
* be handled like interrupt. On mcp750/mpc750 and many PPC processors
|
|
* this means the decrementer exception and the external exception.
|
|
*/
|
|
|
|
void BSP_rtems_irq_mng_init(unsigned cpuId)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* First initialize the Interrupt management hardware
|
|
*/
|
|
|
|
/*
|
|
* Initialize RTEMS management interrupt table
|
|
*/
|
|
|
|
/*
|
|
* re-init the rtemsIrq table
|
|
*/
|
|
for (i = BSP_LOWEST_OFFSET; i <= BSP_MAX_OFFSET; i++) {
|
|
rtemsIrq[i] = defaultIrq;
|
|
rtemsIrq[i].name = i;
|
|
rtemsPrioTbl[i] = BSP_IRQ_DEFAULT_PRIORITY;
|
|
}
|
|
|
|
/*
|
|
* Init initial Interrupt management config
|
|
*/
|
|
initial_config.irqNb = BSP_IRQ_NUMBER;
|
|
initial_config.defaultEntry = defaultIrq;
|
|
initial_config.irqHdlTbl = rtemsIrq;
|
|
initial_config.irqBase = BSP_LOWEST_OFFSET;
|
|
initial_config.irqPrioTbl = rtemsPrioTbl;
|
|
|
|
if (!BSP_rtems_irq_mngt_set(&initial_config)) {
|
|
/*
|
|
* put something here that will show the failure...
|
|
*/
|
|
rtems_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n");
|
|
}
|
|
|
|
#ifdef TRACE_IRQ_INIT
|
|
printk("RTEMS IRQ management is now operationnal\n");
|
|
#endif
|
|
}
|
|
|