linux/arch/powerpc/platforms/40x/walnut.c
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   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#include <linux/rtc.h>
  22
  23#include <asm/machdep.h>
  24#include <asm/prom.h>
  25#include <asm/udbg.h>
  26#include <asm/time.h>
  27#include <asm/uic.h>
  28#include <asm/pci-bridge.h>
  29#include <asm/ppc4xx.h>
  30
  31static __initdata struct of_device_id walnut_of_bus[] = {
  32        { .compatible = "ibm,plb3", },
  33        { .compatible = "ibm,opb", },
  34        { .compatible = "ibm,ebc", },
  35        {},
  36};
  37
  38static int __init walnut_device_probe(void)
  39{
  40        of_platform_bus_probe(NULL, walnut_of_bus, NULL);
  41        of_instantiate_rtc();
  42
  43        return 0;
  44}
  45machine_device_initcall(walnut, walnut_device_probe);
  46
  47static int __init walnut_probe(void)
  48{
  49        unsigned long root = of_get_flat_dt_root();
  50
  51        if (!of_flat_dt_is_compatible(root, "ibm,walnut"))
  52                return 0;
  53
  54        pci_set_flags(PCI_REASSIGN_ALL_RSRC);
  55
  56        return 1;
  57}
  58
  59define_machine(walnut) {
  60        .name                   = "Walnut",
  61        .probe                  = walnut_probe,
  62        .progress               = udbg_progress,
  63        .init_IRQ               = uic_init_tree,
  64        .get_irq                = uic_get_irq,
  65        .restart                = ppc4xx_reset_system,
  66        .calibrate_decr         = generic_calibrate_decr,
  67};
  68