/* * 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"); }