111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*
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* barebox - traps.c Routines related to interrupts and exceptions
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*
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* Copyright (c) 2005 blackfin.uclinux.org
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*
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* This file is based on
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* No original Copyright holder listed,
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* Probabily original (C) Roman Zippel (assigned DJD, 1999)
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*
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* Copyright 2003 Metrowerks - for Blackfin
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* Copyright 2000-2001 Lineo, Inc. D. Jeff Dionne <jeff@lineo.ca>
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* Copyright 1999-2000 D. Jeff Dionne, <jeff@uclinux.org>
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*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <linux/types.h>
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#include <asm/system.h>
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#include <asm/traps.h>
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#include <asm/page.h>
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#include <asm/cplb.h>
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#include <asm/ptrace.h>
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#include <asm/cpu.h>
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void dump_regs(struct pt_regs *fp)
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{
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printf("DCPLB_FAULT_ADDR=%p\n", *pDCPLB_FAULT_ADDR);
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printf("ICPLB_FAULT_ADDR=%p\n", *pICPLB_FAULT_ADDR);
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printf("stack frame=0x%x, ", (unsigned int) fp);
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printf("bad PC=0x%04x\n", (unsigned int) fp->pc);
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printf("RETE: %08lx RETN: %08lx RETX: %08lx RETS: %08lx\n", fp->rete, fp->retn, fp->retx, fp->rets);
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printf("IPEND: %04lx SYSCFG: %04lx\n", fp->ipend, fp->syscfg);
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printf("SEQSTAT: %08lx SP: %08lx\n", (long)fp->seqstat, (long)fp);
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printf("R0: %08lx R1: %08lx R2: %08lx R3: %08lx\n", fp->r0, fp->r1, fp->r2, fp->r3);
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printf("R4: %08lx R5: %08lx R6: %08lx R7: %08lx\n", fp->r4, fp->r5, fp->r6, fp->r7);
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printf("P0: %08lx P1: %08lx P2: %08lx P3: %08lx\n", fp->p0, fp->p1, fp->p2, fp->p3);
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printf("P4: %08lx P5: %08lx FP: %08lx\n", fp->p4, fp->p5, fp->fp);
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printf("A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n", fp->a0w, fp->a0x, fp->a1w, fp->a1x);
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printf("LB0: %08lx LT0: %08lx LC0: %08lx\n", fp->lb0, fp->lt0, fp->lc0);
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printf("LB1: %08lx LT1: %08lx LC1: %08lx\n", fp->lb1, fp->lt1, fp->lc1);
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printf("B0: %08lx L0: %08lx M0: %08lx I0: %08lx\n", fp->b0, fp->l0, fp->m0, fp->i0);
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printf("B1: %08lx L1: %08lx M1: %08lx I1: %08lx\n", fp->b1, fp->l1, fp->m1, fp->i1);
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printf("B2: %08lx L2: %08lx M2: %08lx I2: %08lx\n", fp->b2, fp->l2, fp->m2, fp->i2);
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printf("B3: %08lx L3: %08lx M3: %08lx I3: %08lx\n", fp->b3, fp->l3, fp->m3, fp->i3);
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}
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static const char *trap_to_string(int trapnr)
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{
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switch (trapnr) {
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case VEC_MISALI_D:
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return "Data access misaligned";
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case VEC_MISALI_I:
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return "Instruction fetch misaligned";
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case VEC_CPLB_I_M:
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return "Instruction fetch CPLB miss";
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}
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return NULL;
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}
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void trap_c (struct pt_regs *regs)
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{
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unsigned long trapnr = (regs->seqstat) & SEQSTAT_EXCAUSE;
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const char *str;
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printf("Exception occured!\n\n");
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str = trap_to_string(trapnr);
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if (str)
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printf("%s\n", str);
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printf("code=[0x%x]\n", trapnr);
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dump_regs(regs);
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printf("\nPlease reset the board\n");
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reset_cpu(0);
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}
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void blackfin_irq_panic(int reason, struct pt_regs *regs)
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{
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printf("\n\nException: IRQ 0x%x entered\n", reason);
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dump_regs(regs);
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printf("Unhandled IRQ or exceptions!\n");
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printf("Please reset the board \n");
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reset_cpu(0);
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}
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