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Linux/arch/powerpc/platforms/40x/walnut.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 #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 
 31 static const struct of_device_id walnut_of_bus[] __initconst = {
 32         { .compatible = "ibm,plb3", },
 33         { .compatible = "ibm,opb", },
 34         { .compatible = "ibm,ebc", },
 35         {},
 36 };
 37 
 38 static 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 }
 45 machine_device_initcall(walnut, walnut_device_probe);
 46 
 47 static 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 
 59 define_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 

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