cpu/mcf5227x/interrupts.c

   1 /*
   2  *
   3  * (C) Copyright 2000-2004
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  *
   6  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
   7  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 /* CPU specific interrupt routine */
  29 #include <common.h>
  30 #include <asm/immap.h>
  31
  32 int interrupt_init(void)
  33 {
  34         volatile int0_t *intp = (int0_t *) (CFG_INTR_BASE);
  35
  36         /* Make sure all interrupts are disabled */
  37         intp->imrh0 |= 0xFFFFFFFF;
  38         intp->imrl0 |= 0xFFFFFFFF;
  39
  40         enable_interrupts();
  41         return 0;
  42 }
  43
  44 #if defined(CONFIG_MCFTMR)
  45 void dtimer_intr_setup(void)
  46 {
  47         volatile int0_t *intp = (int0_t *) (CFG_INTR_BASE);
  48
  49         intp->icr0[CFG_TMRINTR_NO] = CFG_TMRINTR_PRI;
  50         intp->imrh0 &= ~CFG_TMRINTR_MASK;
  51 }
  52 #endif