1 /***************************************************************************/
2 
3 /*
4  *	linux/arch/m68knommu/platform/coldfire/vectors.c
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 
dbginterrupt_c(struct frame * fp)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 extern e_vector	*_ramvec;
37 
38 /* Assembler routines */
39 asmlinkage void buserr(void);
40 asmlinkage void trap(void);
41 asmlinkage void system_call(void);
42 asmlinkage void inthandler(void);
43 
trap_init(void)44 void __init trap_init(void)
45 {
46 	int i;
47 
48 	/*
49 	 *	There is a common trap handler and common interrupt
50 	 *	handler that handle almost every vector. We treat
51 	 *	the system call and bus error special, they get their
52 	 *	own first level handlers.
53 	 */
54 	for (i = 3; (i <= 23); i++)
55 		_ramvec[i] = trap;
56 	for (i = 33; (i <= 63); i++)
57 		_ramvec[i] = trap;
58 	for (i = 24; (i <= 31); i++)
59 		_ramvec[i] = inthandler;
60 	for (i = 64; (i < 255); i++)
61 		_ramvec[i] = inthandler;
62 	_ramvec[255] = 0;
63 
64 	_ramvec[2] = buserr;
65 	_ramvec[32] = system_call;
66 
67 #ifdef TRAP_DBG_INTERRUPT
68 	_ramvec[12] = dbginterrupt;
69 #endif
70 }
71 
72 /***************************************************************************/
73