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

   1 /*
   2  * Taishan board specific routines based off ebony.c code
   3  * original copyrights below
   4  *
   5  * Matt Porter <mporter@kernel.crashing.org>
   6  * Copyright 2002-2005 MontaVista Software Inc.
   7  *
   8  * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
   9  * Copyright (c) 2003-2005 Zultys Technologies
  10  *
  11  * Rewritten and ported to the merged powerpc tree:
  12  * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
  13  *
  14  * Modified from ebony.c for taishan:
  15  * Copyright 2007 Hugh Blemings <hugh@au.ibm.com>, IBM Corporation.
  16  *
  17  * This program is free software; you can redistribute  it and/or modify it
  18  * under  the terms of  the GNU General  Public License as published by the
  19  * Free Software Foundation;  either version 2 of the  License, or (at your
  20  * option) any later version.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/of_platform.h>
  25
  26 #include <asm/machdep.h>
  27 #include <asm/prom.h>
  28 #include <asm/udbg.h>
  29 #include <asm/time.h>
  30 #include <asm/uic.h>
  31 #include <asm/pci-bridge.h>
  32
  33 #include "44x.h"
  34
  35 static __initdata struct of_device_id taishan_of_bus[] = {
  36         { .compatible = "ibm,plb4", },
  37         { .compatible = "ibm,opb", },
  38         { .compatible = "ibm,ebc", },
  39         {},
  40 };
  41
  42 static int __init taishan_device_probe(void)
  43 {
  44         of_platform_bus_probe(NULL, taishan_of_bus, NULL);
  45
  46         return 0;
  47 }
  48 machine_device_initcall(taishan, taishan_device_probe);
  49
  50 /*
  51  * Called very early, MMU is off, device-tree isn't unflattened
  52  */
  53 static int __init taishan_probe(void)
  54 {
  55         unsigned long root = of_get_flat_dt_root();
  56
  57         if (!of_flat_dt_is_compatible(root, "amcc,taishan"))
  58                 return 0;
  59
  60         ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
  61
  62         return 1;
  63 }
  64
  65 define_machine(taishan) {
  66         .name                   = "Taishan",
  67         .probe                  = taishan_probe,
  68         .progress               = udbg_progress,
  69         .init_IRQ               = uic_init_tree,
  70         .get_irq                = uic_get_irq,
  71         .restart                = ppc44x_reset_system,
  72         .calibrate_decr         = generic_calibrate_decr,
  73 };