LXR uboot/arch/powerpc/cpu/mpc8220/interrupts.c

   1/*
   2 * (C) Copyright -2003
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2001
   6 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
   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/*
  28 * interrupts.c - just enough support for the decrementer/timer
  29 */
  30
  31#include <common.h>
  32#include <asm/processor.h>
  33#include <command.h>
  34
  35int interrupt_init_cpu (ulong * decrementer_count)
  36{
  37        *decrementer_count = get_tbclk () / CONFIG_SYS_HZ;
  38
  39        return (0);
  40}
  41
  42/****************************************************************************/
  43
  44/*
  45 * Handle external interrupts
  46 */
  47void external_interrupt (struct pt_regs *regs)
  48{
  49        puts ("external_interrupt (oops!)\n");
  50}
  51
  52void timer_interrupt_cpu (struct pt_regs *regs)
  53{
  54        /* nothing to do here */
  55        return;
  56}
  57
  58/****************************************************************************/
  59
  60/*
  61 * Install and free a interrupt handler.
  62 */
  63
  64void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
  65{
  66
  67}
  68
  69void irq_free_handler (int vec)
  70{
  71
  72}
  73
  74/****************************************************************************/
  75
  76void
  77do_irqinfo (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char * const argv[])
  78{
  79        puts ("IRQ related functions are unimplemented currently.\n");
  80}
  81