LXR linux/arch/m68k/coldfire/vectors.c

   1// SPDX-License-Identifier: GPL-2.0
   2/***************************************************************************/
   3
   4/*
   5 *      vectors.c  -- high level trap setup for ColdFire
   6 *
   7 *      Copyright (C) 1999-2007, Greg Ungerer <gerg@snapgear.com>
   8 */
   9
  10/***************************************************************************/
  11
  12#include <linux/kernel.h>
  13#include <linux/init.h>
  14#include <linux/irq.h>
  15#include <asm/traps.h>
  16#include <asm/machdep.h>
  17#include <asm/coldfire.h>
  18#include <asm/mcfsim.h>
  19#include <asm/mcfwdebug.h>
  20
  21/***************************************************************************/
  22
  23#ifdef TRAP_DBG_INTERRUPT
  24
  25asmlinkage void dbginterrupt_c(struct frame *fp)
  26{
  27        extern void dump(struct pt_regs *fp);
  28        printk(KERN_DEBUG "%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__);
  29        dump((struct pt_regs *) fp);
  30        asm("halt");
  31}
  32
  33#endif
  34
  35/***************************************************************************/
  36
  37/* Assembler routines */
  38asmlinkage void buserr(void);
  39asmlinkage void trap(void);
  40asmlinkage void system_call(void);
  41asmlinkage void inthandler(void);
  42
  43void __init trap_init(void)
  44{
  45        int i;
  46
  47        /*
  48         *      There is a common trap handler and common interrupt
  49         *      handler that handle almost every vector. We treat
  50         *      the system call and bus error special, they get their
  51         *      own first level handlers.
  52         */
  53        for (i = 3; (i <= 23); i++)
  54                _ramvec[i] = trap;
  55        for (i = 33; (i <= 63); i++)
  56                _ramvec[i] = trap;
  57        for (i = 24; (i <= 31); i++)
  58                _ramvec[i] = inthandler;
  59        for (i = 64; (i < 255); i++)
  60                _ramvec[i] = inthandler;
  61        _ramvec[255] = 0;
  62
  63        _ramvec[2] = buserr;
  64        _ramvec[32] = system_call;
  65
  66#ifdef TRAP_DBG_INTERRUPT
  67        _ramvec[12] = dbginterrupt;
  68#endif
  69}
  70
  71/***************************************************************************/
  72