LXR uboot/arch/powerpc/cpu/mpc83xx/interrupts.c

   1/*
   2 * (C) Copyright 2000-2002
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * Copyright 2004 Freescale Semiconductor, Inc.
   6 *
   7 * See file CREDITS for list of people who contributed to this
   8 * project.
   9 *
  10 * This program is free software; you can redistribute it and/or
  11 * modify it under the terms of the GNU General Public License as
  12 * published by the Free Software Foundation; either version 2 of
  13 * the License, or (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23 * MA 02111-1307 USA
  24 */
  25
  26#include <common.h>
  27#include <command.h>
  28#include <mpc83xx.h>
  29#include <asm/processor.h>
  30
  31DECLARE_GLOBAL_DATA_PTR;
  32
  33struct irq_action {
  34        interrupt_handler_t *handler;
  35        void *arg;
  36        ulong count;
  37};
  38
  39int interrupt_init_cpu (unsigned *decrementer_count)
  40{
  41        volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
  42
  43        *decrementer_count = (gd->bus_clk / 4) / CONFIG_SYS_HZ;
  44
  45        /* Enable e300 time base */
  46
  47        immr->sysconf.spcr |= 0x00400000;
  48
  49        return 0;
  50}
  51
  52
  53/*
  54 * Handle external interrupts
  55 */
  56
  57void external_interrupt (struct pt_regs *regs)
  58{
  59}
  60
  61
  62/*
  63 * Install and free an interrupt handler.
  64 */
  65
  66void
  67irq_install_handler (int irq, interrupt_handler_t * handler, void *arg)
  68{
  69}
  70
  71
  72void irq_free_handler (int irq)
  73{
  74}
  75
  76
  77void timer_interrupt_cpu (struct pt_regs *regs)
  78{
  79        /* nothing to do here */
  80        return;
  81}
  82
  83
  84#if defined(CONFIG_CMD_IRQ)
  85
  86/* ripped this out of ppc4xx/interrupts.c */
  87
  88/*
  89 * irqinfo - print information about PCI devices
  90 */
  91
  92void
  93do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char * const argv[])
  94{
  95}
  96
  97#endif
  98