arch/powerpc/platforms/44x/ebony.c

   1 /*
   2  * Ebony board specific routines
   3  *
   4  * Matt Porter <mporter@kernel.crashing.org>
   5  * Copyright 2002-2005 MontaVista Software Inc.
   6  *
   7  * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
   8  * Copyright (c) 2003-2005 Zultys Technologies
   9  *
  10  * Rewritten and ported to the merged powerpc tree:
  11  * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
  12  *
  13  * This program is free software; you can redistribute  it and/or modify it
  14  * under  the terms of  the GNU General  Public License as published by the
  15  * Free Software Foundation;  either version 2 of the  License, or (at your
  16  * option) any later version.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <asm/machdep.h>
  21 #include <asm/prom.h>
  22 #include <asm/udbg.h>
  23 #include <asm/time.h>
  24 #include <asm/uic.h>
  25 #include <asm/of_platform.h>
  26
  27 #include "44x.h"
  28
  29 static struct of_device_id ebony_of_bus[] = {
  30         { .compatible = "ibm,plb4", },
  31         { .compatible = "ibm,opb", },
  32         { .compatible = "ibm,ebc", },
  33         {},
  34 };
  35
  36 static int __init ebony_device_probe(void)
  37 {
  38         if (!machine_is(ebony))
  39                 return 0;
  40
  41         of_platform_bus_probe(NULL, ebony_of_bus, NULL);
  42
  43         return 0;
  44 }
  45 device_initcall(ebony_device_probe);
  46
  47 /*
  48  * Called very early, MMU is off, device-tree isn't unflattened
  49  */
  50 static int __init ebony_probe(void)
  51 {
  52         unsigned long root = of_get_flat_dt_root();
  53
  54         if (!of_flat_dt_is_compatible(root, "ibm,ebony"))
  55                 return 0;
  56
  57         return 1;
  58 }
  59
  60 define_machine(ebony) {
  61         .name                   = "Ebony",
  62         .probe                  = ebony_probe,
  63         .progress               = udbg_progress,
  64         .init_IRQ               = uic_init_tree,
  65         .get_irq                = uic_get_irq,
  66         .restart                = ppc44x_reset_system,
  67         .calibrate_decr         = generic_calibrate_decr,
  68 };