LXR linux/arch/powerpc/platforms/40x/hcu4.c

   1/*
   2 * Architecture- / platform-specific boot-time initialization code for
   3 * IBM PowerPC 4xx based boards. Adapted from original
   4 * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
   5 * <dan@net4x.com>.
   6 *
   7 * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
   8 *
   9 * Rewritten and ported to the merged powerpc tree:
  10 * Copyright 2007 IBM Corporation
  11 * Josh Boyer <jwboyer@linux.vnet.ibm.com>
  12 *
  13 * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
  14 * the terms of the GNU General Public License version 2.  This program
  15 * is licensed "as is" without any warranty of any kind, whether express
  16 * or implied.
  17 */
  18
  19#include <linux/init.h>
  20#include <linux/of_platform.h>
  21
  22#include <asm/machdep.h>
  23#include <asm/prom.h>
  24#include <asm/udbg.h>
  25#include <asm/time.h>
  26#include <asm/uic.h>
  27#include <asm/ppc4xx.h>
  28
  29static __initdata struct of_device_id hcu4_of_bus[] = {
  30        { .compatible = "ibm,plb3", },
  31        { .compatible = "ibm,opb", },
  32        { .compatible = "ibm,ebc", },
  33        {},
  34};
  35
  36static int __init hcu4_device_probe(void)
  37{
  38        of_platform_bus_probe(NULL, hcu4_of_bus, NULL);
  39        return 0;
  40}
  41machine_device_initcall(hcu4, hcu4_device_probe);
  42
  43static int __init hcu4_probe(void)
  44{
  45        unsigned long root = of_get_flat_dt_root();
  46
  47        if (!of_flat_dt_is_compatible(root, "netstal,hcu4"))
  48                return 0;
  49
  50        return 1;
  51}
  52
  53define_machine(hcu4) {
  54        .name                   = "HCU4",
  55        .probe                  = hcu4_probe,
  56        .progress               = udbg_progress,
  57        .init_IRQ               = uic_init_tree,
  58        .get_irq                = uic_get_irq,
  59        .restart                = ppc4xx_reset_system,
  60        .calibrate_decr         = generic_calibrate_decr,
  61};
  62