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 <linux/cpu.h> 16 #include <asm/traps.h> 17 #include <asm/machdep.h> 18 #include <asm/coldfire.h> 19 #include <asm/mcfsim.h> 20 #include <asm/mcfwdebug.h> 21 22 /***************************************************************************/ 23 24 #ifdef TRAP_DBG_INTERRUPT 25 dbginterrupt_c(struct frame * fp)26asmlinkage void dbginterrupt_c(struct frame *fp) 27 { 28 extern void dump(struct pt_regs *fp); 29 printk(KERN_DEBUG "%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__); 30 dump((struct pt_regs *) fp); 31 asm("halt"); 32 } 33 34 #endif 35 36 /***************************************************************************/ 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)44void __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