walnut.c

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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 <[email protected]>, and Dan Malek
 * <[email protected]>.
 *
 * Copyright(c) 1999-2000 Grant Erickson <[email protected]>
 *
 * Rewritten and ported to the merged powerpc tree:
 * Copyright 2007 IBM Corporation
 * Josh Boyer <[email protected]>
 *
 * 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 __initdata struct of_device_id walnut_of_bus[] = {
    { .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,
};