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@@ -0,0 +1,68 @@
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+/*
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+ * Architecture- / platform-specific boot-time initialization code for
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+ * IBM PowerPC 4xx based boards. Adapted from original
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+ * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
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+ * <dan@net4x.com>.
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+ *
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+ * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
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+ *
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+ * Rewritten and ported to the merged powerpc tree:
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+ * Copyright 2007 IBM Corporation
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+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
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+ *
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+ * 2002 (c) MontaVista, Software, Inc. This file is licensed under
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+ * the terms of the GNU General Public License version 2. This program
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+ * is licensed "as is" without any warranty of any kind, whether express
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+ * or implied.
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+ */
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+
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+#include <linux/init.h>
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+#include <asm/machdep.h>
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+#include <asm/prom.h>
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+#include <asm/udbg.h>
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+#include <asm/time.h>
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+#include <asm/uic.h>
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+#include <asm/of_platform.h>
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+
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+static struct of_device_id walnut_of_bus[] = {
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+ { .compatible = "ibm,plb3", },
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+ { .compatible = "ibm,opb", },
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+ { .compatible = "ibm,ebc", },
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+ {},
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+};
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+
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+static int __init walnut_device_probe(void)
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+{
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+ if (!machine_is(walnut))
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+ return 0;
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+
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+ /* FIXME: do bus probe here */
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+ of_platform_bus_probe(NULL, walnut_of_bus, NULL);
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+
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+ return 0;
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+}
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+device_initcall(walnut_device_probe);
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+
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+static int __init walnut_probe(void)
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+{
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+ unsigned long root = of_get_flat_dt_root();
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+
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+ if (!of_flat_dt_is_compatible(root, "ibm,walnut"))
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+ return 0;
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+
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+ return 1;
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+}
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+
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+static void __init walnut_setup_arch(void)
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+{
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+}
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+
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+define_machine(walnut) {
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+ .name = "Walnut",
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+ .probe = walnut_probe,
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+ .setup_arch = walnut_setup_arch,
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+ .progress = udbg_progress,
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+ .init_IRQ = uic_init_tree,
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+ .get_irq = uic_get_irq,
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+ .calibrate_decr = generic_calibrate_decr,
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+};
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Josh Boyer