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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /***************************************************************************/ |
3 | ||
4 | /* | |
ece9ae65 | 5 | * vectors.c -- high level trap setup for ColdFire |
1da177e4 | 6 | * |
2502b667 | 7 | * Copyright (C) 1999-2007, Greg Ungerer <gerg@snapgear.com> |
1da177e4 LT |
8 | */ |
9 | ||
10 | /***************************************************************************/ | |
11 | ||
1da177e4 | 12 | #include <linux/kernel.h> |
1da177e4 | 13 | #include <linux/init.h> |
2502b667 | 14 | #include <linux/irq.h> |
1da177e4 LT |
15 | #include <asm/traps.h> |
16 | #include <asm/machdep.h> | |
17 | #include <asm/coldfire.h> | |
1da177e4 | 18 | #include <asm/mcfsim.h> |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
622e9472 | 43 | void __init trap_init(void) |
1da177e4 LT |
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 | /***************************************************************************/ |