cpu/arm920t/interrupts.c

   1 /*
   2  * (C) Copyright 2002
   3  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   4  * Marius Groeger <mgroeger@sysgo.de>
   5  *
   6  * (C) Copyright 2002
   7  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   8  * Alex Zuepke <azu@sysgo.de>
   9  *
  10  * (C) Copyright 2002
  11  * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
  12  *
  13  * See file CREDITS for list of people who contributed to this
  14  * project.
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License as
  18  * published by the Free Software Foundation; either version 2 of
  19  * the License, or (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29  * MA 02111-1307 USA
  30  */
  31
  32 #include <common.h>
  33 #include <arm920t.h>
  34
  35 #ifdef CONFIG_USE_IRQ
  36 #include <asm/proc-armv/ptrace.h>
  37 void do_irq (struct pt_regs *pt_regs)
  38 {
  39 #if defined (ARM920_IRQ_CALLBACK)
  40         ARM920_IRQ_CALLBACK();
  41 #elif defined (CONFIG_ARCH_INTEGRATOR)
  42         /* ASSUMED to be a timer interrupt  */
  43         /* Just clear it - count handled in */
  44         /* integratorap.c                   */
  45         *(volatile ulong *)(CFG_TIMERBASE + 0x0C) = 0;
  46 #else
  47 #error do_irq() not defined for this cpu type
  48 #endif
  49 }
  50 #endif