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Diffstat (limited to 'cpu/bf537/ints.c')
| -rw-r--r-- | cpu/bf537/ints.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/cpu/bf537/ints.c b/cpu/bf537/ints.c new file mode 100644 index 0000000..5586689 --- /dev/null +++ b/cpu/bf537/ints.c @@ -0,0 +1,117 @@ +/* + * 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"); +} |