| Wolfgang Denk | 97caf67 | 2006-03-12 02:12:27 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * U-boot - ints.c Interrupt related routines |
| 3 | * |
| 4 | * Copyright (c) 2005 blackfin.uclinux.org |
| 5 | * |
| 6 | * This file is based on ints.c |
| 7 | * |
| 8 | * Apr18 2003, Changed by HuTao to support interrupt cascading for Blackfin |
| 9 | * drivers |
| 10 | * |
| 11 | * Copyright 1996 Roman Zippel |
| 12 | * Copyright 1999 D. Jeff Dionne <jeff@uclinux.org> |
| 13 | * Copyright 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca> |
| 14 | * Copyright 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca> |
| 15 | * Copyright 2003 Metrowerks/Motorola |
| 16 | * |
| 17 | * (C) Copyright 2000-2004 |
| 18 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 19 | * |
| 20 | * See file CREDITS for list of people who contributed to this |
| 21 | * project. |
| 22 | * |
| 23 | * This program is free software; you can redistribute it and/or |
| 24 | * modify it under the terms of the GNU General Public License as |
| 25 | * published by the Free Software Foundation; either version 2 of |
| 26 | * the License, or (at your option) any later version. |
| 27 | * |
| 28 | * This program is distributed in the hope that it will be useful, |
| 29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 31 | * GNU General Public License for more details. |
| 32 | * |
| 33 | * You should have received a copy of the GNU General Public License |
| 34 | * along with this program; if not, write to the Free Software |
| 35 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 36 | * MA 02111-1307 USA |
| 37 | */ |
| 38 | |
| 39 | #include <common.h> |
| 40 | #include <linux/stddef.h> |
| 41 | #include <asm/system.h> |
| 42 | #include <asm/irq.h> |
| 43 | #include <asm/traps.h> |
| 44 | #include <asm/io.h> |
| 45 | #include <asm/errno.h> |
| 46 | #include <asm/machdep.h> |
| 47 | #include <asm/setup.h> |
| 48 | #include <asm/blackfin.h> |
| 49 | #include "cpu.h" |
| 50 | |
| 51 | void blackfin_irq_panic(int reason, struct pt_regs *regs) |
| 52 | { |
| 53 | printf("\n\nException: IRQ 0x%x entered\n", reason); |
| 54 | printf("code=[0x%x], ", (unsigned int) (regs->seqstat & 0x3f)); |
| 55 | printf("stack frame=0x%x, ", (unsigned int) regs); |
| 56 | printf("bad PC=0x%04x\n", (unsigned int) regs->pc); |
| 57 | dump(regs); |
| 58 | printf("Unhandled IRQ or exceptions!\n"); |
| 59 | printf("Please reset the board \n"); |
| 60 | } |
| 61 | |
| 62 | void blackfin_init_IRQ(void) |
| 63 | { |
| 64 | *(unsigned volatile long *) (SIC_IMASK) = SIC_UNMASK_ALL; |
| 65 | cli(); |
| 66 | #ifndef CONFIG_KGDB |
| 67 | *(unsigned volatile long *) (EVT_EMULATION_ADDR) = 0x0; |
| 68 | #endif |
| 69 | *(unsigned volatile long *) (EVT_NMI_ADDR) = |
| 70 | (unsigned volatile long) evt_nmi; |
| 71 | *(unsigned volatile long *) (EVT_EXCEPTION_ADDR) = |
| 72 | (unsigned volatile long) trap; |
| 73 | *(unsigned volatile long *) (EVT_HARDWARE_ERROR_ADDR) = |
| 74 | (unsigned volatile long) evt_ivhw; |
| 75 | *(unsigned volatile long *) (EVT_RESET_ADDR) = |
| 76 | (unsigned volatile long) evt_rst; |
| 77 | *(unsigned volatile long *) (EVT_TIMER_ADDR) = |
| 78 | (unsigned volatile long) evt_timer; |
| 79 | *(unsigned volatile long *) (EVT_IVG7_ADDR) = |
| 80 | (unsigned volatile long) evt_evt7; |
| 81 | *(unsigned volatile long *) (EVT_IVG8_ADDR) = |
| 82 | (unsigned volatile long) evt_evt8; |
| 83 | *(unsigned volatile long *) (EVT_IVG9_ADDR) = |
| 84 | (unsigned volatile long) evt_evt9; |
| 85 | *(unsigned volatile long *) (EVT_IVG10_ADDR) = |
| 86 | (unsigned volatile long) evt_evt10; |
| 87 | *(unsigned volatile long *) (EVT_IVG11_ADDR) = |
| 88 | (unsigned volatile long) evt_evt11; |
| 89 | *(unsigned volatile long *) (EVT_IVG12_ADDR) = |
| 90 | (unsigned volatile long) evt_evt12; |
| 91 | *(unsigned volatile long *) (EVT_IVG13_ADDR) = |
| 92 | (unsigned volatile long) evt_evt13; |
| 93 | *(unsigned volatile long *) (EVT_IVG14_ADDR) = |
| 94 | (unsigned volatile long) evt_system_call; |
| 95 | *(unsigned volatile long *) (EVT_IVG15_ADDR) = |
| 96 | (unsigned volatile long) evt_soft_int1; |
| 97 | *(volatile unsigned long *) ILAT = 0; |
| 98 | asm("csync;"); |
| 99 | sti(); |
| 100 | *(volatile unsigned long *) IMASK = 0xffbf; |
| 101 | asm("csync;"); |
| 102 | } |
| 103 | |
| 104 | void display_excp(void) |
| 105 | { |
| 106 | printf("Exception!\n"); |
| 107 | } |