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kernel/linux-rt-4.4.41/arch/powerpc/platforms/40x/walnut.c 1.65 KB
5113f6f70   김현기   kernel add
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  /*
   * Architecture- / platform-specific boot-time initialization code for
   * IBM PowerPC 4xx based boards. Adapted from original
   * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
   * <dan@net4x.com>.
   *
   * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
   *
   * Rewritten and ported to the merged powerpc tree:
   * Copyright 2007 IBM Corporation
   * Josh Boyer <jwboyer@linux.vnet.ibm.com>
   *
   * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
   * the terms of the GNU General Public License version 2.  This program
   * is licensed "as is" without any warranty of any kind, whether express
   * or implied.
   */
  
  #include <linux/init.h>
  #include <linux/of_platform.h>
  #include <linux/rtc.h>
  
  #include <asm/machdep.h>
  #include <asm/prom.h>
  #include <asm/udbg.h>
  #include <asm/time.h>
  #include <asm/uic.h>
  #include <asm/pci-bridge.h>
  #include <asm/ppc4xx.h>
  
  static const struct of_device_id walnut_of_bus[] __initconst = {
  	{ .compatible = "ibm,plb3", },
  	{ .compatible = "ibm,opb", },
  	{ .compatible = "ibm,ebc", },
  	{},
  };
  
  static int __init walnut_device_probe(void)
  {
  	of_platform_bus_probe(NULL, walnut_of_bus, NULL);
  	of_instantiate_rtc();
  
  	return 0;
  }
  machine_device_initcall(walnut, walnut_device_probe);
  
  static int __init walnut_probe(void)
  {
  	unsigned long root = of_get_flat_dt_root();
  
  	if (!of_flat_dt_is_compatible(root, "ibm,walnut"))
  		return 0;
  
  	pci_set_flags(PCI_REASSIGN_ALL_RSRC);
  
  	return 1;
  }
  
  define_machine(walnut) {
  	.name			= "Walnut",
  	.probe			= walnut_probe,
  	.progress		= udbg_progress,
  	.init_IRQ		= uic_init_tree,
  	.get_irq		= uic_get_irq,
  	.restart		= ppc4xx_reset_system,
  	.calibrate_decr		= generic_calibrate_decr,
  };