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
  25 asmlinkage 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 */
  38 asmlinkage void buserr(void);
  39 asmlinkage void trap(void);
  40 asmlinkage void system_call(void);
  41 asmlinkage void inthandler(void);
  42
  43 void __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 /***************************************************************************/