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/*
* U-boot - ints.c Interrupt related routines
*
* Copyright (c) 2005-2007 Analog Devices Inc.
*
* This file is based on ints.c
*
* Apr18 2003, Changed by HuTao to support interrupt cascading for Blackfin
* drivers
*
* Copyright 1996 Roman Zippel
* Copyright 1999 D. Jeff Dionne <jeff@uclinux.org>
* Copyright 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
* Copyright 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
* Copyright 2003 Metrowerks/Motorola
*
* (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., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <common.h>
#include <linux/stddef.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/machdep.h>
#include <asm/setup.h>
#include <asm/blackfin.h>
#include "cpu.h"
void blackfin_irq_panic(int reason, struct pt_regs *regs)
{
printf("\n\nException: IRQ 0x%x entered\n", reason);
printf("code=[0x%x], ", (unsigned int)(regs->seqstat & 0x3f));
printf("stack frame=0x%x, ", (unsigned int)regs);
printf("bad PC=0x%04x\n", (unsigned int)regs->pc);
dump(regs);
printf("Unhandled IRQ or exceptions!\n");
printf("Please reset the board \n");
}
void blackfin_init_IRQ(void)
{
*(unsigned volatile long *)(SIC_IMASK) = SIC_UNMASK_ALL;
cli();
#ifndef CONFIG_KGDB
*(unsigned volatile long *)(EVT_EMULATION_ADDR) = 0x0;
#endif
*(unsigned volatile long *)(EVT_NMI_ADDR) =
(unsigned volatile long)evt_nmi;
*(unsigned volatile long *)(EVT_EXCEPTION_ADDR) =
(unsigned volatile long)trap;
*(unsigned volatile long *)(EVT_HARDWARE_ERROR_ADDR) =
(unsigned volatile long)evt_ivhw;
*(unsigned volatile long *)(EVT_RESET_ADDR) =
(unsigned volatile long)evt_rst;
*(unsigned volatile long *)(EVT_TIMER_ADDR) =
(unsigned volatile long)evt_timer;
*(unsigned volatile long *)(EVT_IVG7_ADDR) =
(unsigned volatile long)evt_evt7;
*(unsigned volatile long *)(EVT_IVG8_ADDR) =
(unsigned volatile long)evt_evt8;
*(unsigned volatile long *)(EVT_IVG9_ADDR) =
(unsigned volatile long)evt_evt9;
*(unsigned volatile long *)(EVT_IVG10_ADDR) =
(unsigned volatile long)evt_evt10;
*(unsigned volatile long *)(EVT_IVG11_ADDR) =
(unsigned volatile long)evt_evt11;
*(unsigned volatile long *)(EVT_IVG12_ADDR) =
(unsigned volatile long)evt_evt12;
*(unsigned volatile long *)(EVT_IVG13_ADDR) =
(unsigned volatile long)evt_evt13;
*(unsigned volatile long *)(EVT_IVG14_ADDR) =
(unsigned volatile long)evt_system_call;
*(unsigned volatile long *)(EVT_IVG15_ADDR) =
(unsigned volatile long)evt_soft_int1;
*(volatile unsigned long *)ILAT = 0;
asm("csync;");
sti();
*(volatile unsigned long *)IMASK = 0xffbf;
asm("csync;");
}
void exception_handle(void)
{
#if defined (CONFIG_PANIC_HANG)
display_excp();
#else
udelay(100000); /* allow messages to go out */
do_reset(NULL, 0, 0, NULL);
#endif
}
void display_excp(void)
{
printf("Exception!\n");
}
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