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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001// SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/***************************************************************************/
3
4/*
Greg Ungererece9ae62014-08-19 11:55:24 +10005 * vectors.c -- high level trap setup for ColdFire
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 *
Greg Ungerer2502b6672007-07-19 01:49:12 -07007 * Copyright (C) 1999-2007, Greg Ungerer <gerg@snapgear.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 */
9
10/***************************************************************************/
11
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/init.h>
Greg Ungerer2502b6672007-07-19 01:49:12 -070014#include <linux/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <asm/traps.h>
16#include <asm/machdep.h>
17#include <asm/coldfire.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <asm/mcfsim.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070037/* Assembler routines */
38asmlinkage void buserr(void);
39asmlinkage void trap(void);
40asmlinkage void system_call(void);
41asmlinkage void inthandler(void);
42
Greg Ungerer622e9472011-06-23 15:52:25 +100043void __init trap_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044{
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/***************************************************************************/