| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /***************************************************************************/ |
| 2 | |
| 3 | /* |
| 4 | * linux/arch/m68knommu/platform/5307/vectors.c |
| 5 | * |
| 6 | * Copyright (C) 1999-2003, Greg Ungerer <gerg@snapgear.com> |
| 7 | */ |
| 8 | |
| 9 | /***************************************************************************/ |
| 10 | |
| 11 | #include <linux/config.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/param.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/unistd.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <asm/irq.h> |
| 19 | #include <asm/dma.h> |
| 20 | #include <asm/traps.h> |
| 21 | #include <asm/machdep.h> |
| 22 | #include <asm/coldfire.h> |
| 23 | #include <asm/mcftimer.h> |
| 24 | #include <asm/mcfsim.h> |
| 25 | #include <asm/mcfdma.h> |
| 26 | #include <asm/mcfwdebug.h> |
| 27 | |
| 28 | /***************************************************************************/ |
| 29 | |
| 30 | #ifdef TRAP_DBG_INTERRUPT |
| 31 | |
| 32 | asmlinkage void dbginterrupt_c(struct frame *fp) |
| 33 | { |
| 34 | extern void dump(struct pt_regs *fp); |
| 35 | printk(KERN_DEBUG "%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__); |
| 36 | dump((struct pt_regs *) fp); |
| 37 | asm("halt"); |
| 38 | } |
| 39 | |
| 40 | #endif |
| 41 | |
| 42 | /***************************************************************************/ |
| 43 | |
| 44 | extern e_vector *_ramvec; |
| 45 | |
| 46 | void set_evector(int vecnum, void (*handler)(void)) |
| 47 | { |
| 48 | if (vecnum >= 0 && vecnum <= 255) |
| 49 | _ramvec[vecnum] = handler; |
| 50 | } |
| 51 | |
| 52 | /***************************************************************************/ |
| 53 | |
| 54 | /* Assembler routines */ |
| 55 | asmlinkage void buserr(void); |
| 56 | asmlinkage void trap(void); |
| 57 | asmlinkage void system_call(void); |
| 58 | asmlinkage void inthandler(void); |
| 59 | |
| 60 | void __init coldfire_trap_init(void) |
| 61 | { |
| 62 | int i; |
| 63 | |
| 64 | /* |
| 65 | * There is a common trap handler and common interrupt |
| 66 | * handler that handle almost every vector. We treat |
| 67 | * the system call and bus error special, they get their |
| 68 | * own first level handlers. |
| 69 | */ |
| 70 | for (i = 3; (i <= 23); i++) |
| 71 | _ramvec[i] = trap; |
| 72 | for (i = 33; (i <= 63); i++) |
| 73 | _ramvec[i] = trap; |
| 74 | for (i = 24; (i <= 31); i++) |
| 75 | _ramvec[i] = inthandler; |
| 76 | for (i = 64; (i < 255); i++) |
| 77 | _ramvec[i] = inthandler; |
| 78 | _ramvec[255] = 0; |
| 79 | |
| 80 | _ramvec[2] = buserr; |
| 81 | _ramvec[32] = system_call; |
| 82 | |
| 83 | #ifdef TRAP_DBG_INTERRUPT |
| 84 | _ramvec[12] = dbginterrupt; |
| 85 | #endif |
| 86 | } |
| 87 | |
| 88 | /***************************************************************************/ |
| 89 | |
| 90 | void coldfire_reset(void) |
| 91 | { |
| 92 | HARD_RESET_NOW(); |
| 93 | } |
| 94 | |
| 95 | /***************************************************************************/ |