[POWERPC] Walnut board support
[linux-2.6-block.git] / arch / powerpc / platforms / 40x / walnut.c
CommitLineData
545c069c
JB
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 <asm/machdep.h>
21#include <asm/prom.h>
22#include <asm/udbg.h>
23#include <asm/time.h>
24#include <asm/uic.h>
25#include <asm/of_platform.h>
26
27static struct of_device_id walnut_of_bus[] = {
28 { .compatible = "ibm,plb3", },
29 { .compatible = "ibm,opb", },
30 { .compatible = "ibm,ebc", },
31 {},
32};
33
34static int __init walnut_device_probe(void)
35{
36 if (!machine_is(walnut))
37 return 0;
38
39 /* FIXME: do bus probe here */
40 of_platform_bus_probe(NULL, walnut_of_bus, NULL);
41
42 return 0;
43}
44device_initcall(walnut_device_probe);
45
46static int __init walnut_probe(void)
47{
48 unsigned long root = of_get_flat_dt_root();
49
50 if (!of_flat_dt_is_compatible(root, "ibm,walnut"))
51 return 0;
52
53 return 1;
54}
55
56static void __init walnut_setup_arch(void)
57{
58}
59
60define_machine(walnut) {
61 .name = "Walnut",
62 .probe = walnut_probe,
63 .setup_arch = walnut_setup_arch,
64 .progress = udbg_progress,
65 .init_IRQ = uic_init_tree,
66 .get_irq = uic_get_irq,
67 .calibrate_decr = generic_calibrate_decr,
68};