113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/*
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* U-boot - ints.c Interrupt related routines
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*
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* Copyright (c) 2005-2007 Analog Devices Inc.
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*
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* This file is based on ints.c
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*
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* Apr18 2003, Changed by HuTao to support interrupt cascading for Blackfin
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* drivers
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*
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* Copyright 1996 Roman Zippel
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* Copyright 1999 D. Jeff Dionne <jeff@uclinux.org>
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* Copyright 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
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* Copyright 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
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* Copyright 2003 Metrowerks/Motorola
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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., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <common.h>
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#include <linux/stddef.h>
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#include <asm/system.h>
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#include <asm/traps.h>
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#include <asm/io.h>
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#include <asm/errno.h>
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#include <asm/blackfin.h>
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#include "cpu.h"
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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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printf("code=[0x%x], ", (unsigned int)(regs->seqstat & 0x3f));
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printf("stack frame=0x%x, ", (unsigned int)regs);
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printf("bad PC=0x%04x\n", (unsigned int)regs->pc);
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dump(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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}
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void blackfin_init_IRQ(void)
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{
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*(unsigned volatile long *)(SICA_IMASK0) = 0;
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#ifndef CONFIG_KGDB
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*(unsigned volatile long *)(EVT1) = 0x0;
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#endif
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*(unsigned volatile long *)(EVT2) =
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(unsigned volatile long)evt_nmi;
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*(unsigned volatile long *)(EVT3) =
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(unsigned volatile long)trap;
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*(unsigned volatile long *)(EVT5) =
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(unsigned volatile long)evt_ivhw;
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*(unsigned volatile long *)(EVT0) =
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(unsigned volatile long)evt_rst;
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*(unsigned volatile long *)(EVT6) =
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(unsigned volatile long)evt_timer;
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*(unsigned volatile long *)(EVT7) =
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(unsigned volatile long)evt_evt7;
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*(unsigned volatile long *)(EVT8) =
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(unsigned volatile long)evt_evt8;
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*(unsigned volatile long *)(EVT9) =
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(unsigned volatile long)evt_evt9;
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*(unsigned volatile long *)(EVT10) =
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(unsigned volatile long)evt_evt10;
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*(unsigned volatile long *)(EVT11) =
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(unsigned volatile long)evt_evt11;
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*(unsigned volatile long *)(EVT12) =
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(unsigned volatile long)evt_evt12;
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*(unsigned volatile long *)(EVT13) =
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(unsigned volatile long)evt_evt13;
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*(unsigned volatile long *)(EVT14) =
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(unsigned volatile long)evt_system_call;
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*(unsigned volatile long *)(EVT15) =
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(unsigned volatile long)evt_soft_int1;
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*(volatile unsigned long *)ILAT = 0;
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asm("csync;");
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*(volatile unsigned long *)IMASK = 0xffbf;
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asm("csync;");
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}
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void exception_handle(void)
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{
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#if defined (CONFIG_PANIC_HANG)
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display_excp();
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#else
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udelay(100000); /* allow messages to go out */
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do_reset(NULL, 0, 0, NULL);
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#endif
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}
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void display_excp(void)
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{
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printf("Exception!\n");
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}
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