cpu/mcf52x2/interrupts.c

   1 /*
   2  * (C) Copyright 2000-2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
   6  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28 #include <watchdog.h>
  29 #include <asm/processor.h>
  30 #include <asm/immap.h>
  31
  32 #ifdef  CONFIG_M5272
  33 int interrupt_init(void)
  34 {
  35         volatile intctrl_t *intp = (intctrl_t *) (MMAP_INTC);
  36
  37         /* disable all external interrupts */
  38         intp->int_icr1 = 0x88888888;
  39         intp->int_icr2 = 0x88888888;
  40         intp->int_icr3 = 0x88888888;
  41         intp->int_icr4 = 0x88888888;
  42         intp->int_pitr = 0x00000000;
  43         /* initialize vector register */
  44         intp->int_pivr = 0x40;
  45
  46         enable_interrupts();
  47
  48         return 0;
  49 }
  50
  51 #if defined(CONFIG_MCFTMR)
  52 void dtimer_intr_setup(void)
  53 {
  54         volatile intctrl_t *intp = (intctrl_t *) (CONFIG_SYS_INTR_BASE);
  55
  56         intp->int_icr1 &= ~INT_ICR1_TMR3MASK;
  57         intp->int_icr1 |= CONFIG_SYS_TMRINTR_PRI;
  58 }
  59 #endif                          /* CONFIG_MCFTMR */
  60 #endif                          /* CONFIG_M5272 */
  61
  62 #if defined(CONFIG_M5282) || defined(CONFIG_M5271) || defined(CONFIG_M5275)
  63 int interrupt_init(void)
  64 {
  65         volatile int0_t *intp = (int0_t *) (CONFIG_SYS_INTR_BASE);
  66
  67         /* Make sure all interrupts are disabled */
  68         intp->imrl0 |= 0x1;
  69
  70         enable_interrupts();
  71         return 0;
  72 }
  73
  74 #if defined(CONFIG_MCFTMR)
  75 void dtimer_intr_setup(void)
  76 {
  77         volatile int0_t *intp = (int0_t *) (CONFIG_SYS_INTR_BASE);
  78
  79         intp->icr0[CONFIG_SYS_TMRINTR_NO] = CONFIG_SYS_TMRINTR_PRI;
  80         intp->imrl0 &= 0xFFFFFFFE;
  81         intp->imrl0 &= ~CONFIG_SYS_TMRINTR_MASK;
  82 }
  83 #endif                          /* CONFIG_MCFTMR */
  84 #endif                          /* CONFIG_M5282 | CONFIG_M5271 | CONFIG_M5275 */
  85
  86 #if defined(CONFIG_M5249) || defined(CONFIG_M5253)
  87 int interrupt_init(void)
  88 {
  89         enable_interrupts();
  90
  91         return 0;
  92 }
  93
  94 #if defined(CONFIG_MCFTMR)
  95 void dtimer_intr_setup(void)
  96 {
  97         mbar_writeLong(MCFSIM_IMR, mbar_readLong(MCFSIM_IMR) & ~0x00000400);
  98         mbar_writeByte(MCFSIM_TIMER2ICR, CONFIG_SYS_TMRINTR_PRI);
  99 }
 100 #endif                          /* CONFIG_MCFTMR */
 101 #endif                          /* CONFIG_M5249 || CONFIG_M5253 */