1 // SPDX-License-Identifier: GPL-2.0 2 /***************************************************************************/ 3 4 /* 5 * vectors.c -- high level trap setup for ColdFire 6 * 7 * Copyright (C) 1999-2007, Greg Ungerer <gerg@snapgear.com> 8 */ 9 10 /***************************************************************************/ 11 12 #include <linux/kernel.h> 13 #include <linux/init.h> 14 #include <linux/irq.h> 15 #include <asm/traps.h> 16 #include <asm/machdep.h> 17 #include <asm/coldfire.h> 18 #include <asm/mcfsim.h> 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 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 43 void __init trap_init(void) 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 /***************************************************************************/ 72