arch/m68k/coldfire/vectors.c

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