blob: 14f1da9ff13656038becab3ea1cd45b516f9f962 [file] [log] [blame]
/*
* barebox - traps.c Routines related to interrupts and exceptions
*
* Copyright (c) 2005 blackfin.uclinux.org
*
* This file is based on
* No original Copyright holder listed,
* Probabily original (C) Roman Zippel (assigned DJD, 1999)
*
* Copyright 2003 Metrowerks - for Blackfin
* Copyright 2000-2001 Lineo, Inc. D. Jeff Dionne <jeff@lineo.ca>
* Copyright 1999-2000 D. Jeff Dionne, <jeff@uclinux.org>
*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <linux/types.h>
#include <asm/system.h>
#include <asm/traps.h>
#include <asm/page.h>
#include <asm/cplb.h>
#include <asm/ptrace.h>
#include <asm/cpu.h>
void dump_regs(struct pt_regs *fp)
{
printf("DCPLB_FAULT_ADDR=%p\n", *pDCPLB_FAULT_ADDR);
printf("ICPLB_FAULT_ADDR=%p\n", *pICPLB_FAULT_ADDR);
printf("stack frame=0x%x, ", (unsigned int) fp);
printf("bad PC=0x%04x\n", (unsigned int) fp->pc);
printf("RETE: %08lx RETN: %08lx RETX: %08lx RETS: %08lx\n", fp->rete, fp->retn, fp->retx, fp->rets);
printf("IPEND: %04lx SYSCFG: %04lx\n", fp->ipend, fp->syscfg);
printf("SEQSTAT: %08lx SP: %08lx\n", (long)fp->seqstat, (long)fp);
printf("R0: %08lx R1: %08lx R2: %08lx R3: %08lx\n", fp->r0, fp->r1, fp->r2, fp->r3);
printf("R4: %08lx R5: %08lx R6: %08lx R7: %08lx\n", fp->r4, fp->r5, fp->r6, fp->r7);
printf("P0: %08lx P1: %08lx P2: %08lx P3: %08lx\n", fp->p0, fp->p1, fp->p2, fp->p3);
printf("P4: %08lx P5: %08lx FP: %08lx\n", fp->p4, fp->p5, fp->fp);
printf("A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n", fp->a0w, fp->a0x, fp->a1w, fp->a1x);
printf("LB0: %08lx LT0: %08lx LC0: %08lx\n", fp->lb0, fp->lt0, fp->lc0);
printf("LB1: %08lx LT1: %08lx LC1: %08lx\n", fp->lb1, fp->lt1, fp->lc1);
printf("B0: %08lx L0: %08lx M0: %08lx I0: %08lx\n", fp->b0, fp->l0, fp->m0, fp->i0);
printf("B1: %08lx L1: %08lx M1: %08lx I1: %08lx\n", fp->b1, fp->l1, fp->m1, fp->i1);
printf("B2: %08lx L2: %08lx M2: %08lx I2: %08lx\n", fp->b2, fp->l2, fp->m2, fp->i2);
printf("B3: %08lx L3: %08lx M3: %08lx I3: %08lx\n", fp->b3, fp->l3, fp->m3, fp->i3);
}
static const char *trap_to_string(int trapnr)
{
switch (trapnr) {
case VEC_MISALI_D:
return "Data access misaligned";
case VEC_MISALI_I:
return "Instruction fetch misaligned";
case VEC_CPLB_I_M:
return "Instruction fetch CPLB miss";
}
return NULL;
}
void trap_c (struct pt_regs *regs)
{
uint32_t trapnr = (regs->seqstat) & SEQSTAT_EXCAUSE;
const char *str;
printf("Exception occured!\n\n");
str = trap_to_string(trapnr);
if (str)
printf("%s\n", str);
printf("code=[0x%x]\n", trapnr);
dump_regs(regs);
printf("\nPlease reset the board\n");
reset_cpu(0);
}
void blackfin_irq_panic(int reason, struct pt_regs *regs)
{
printf("\n\nException: IRQ 0x%x entered\n", reason);
dump_regs(regs);
printf("Unhandled IRQ or exceptions!\n");
printf("Please reset the board \n");
reset_cpu(0);
}