1/*
2 * arch/powerpc/platforms/embedded6xx/gamecube.c
3 *
4 * Nintendo GameCube board-specific support
5 * Copyright (C) 2004-2009 The GameCube Linux Team
6 * Copyright (C) 2007,2008,2009 Albert Herranz
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
12 *
13 */
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/irq.h>
18#include <linux/kexec.h>
19#include <linux/seq_file.h>
20#include <linux/of_platform.h>
21
22#include <asm/io.h>
23#include <asm/machdep.h>
24#include <asm/prom.h>
25#include <asm/time.h>
26#include <asm/udbg.h>
27
28#include "flipper-pic.h"
29#include "usbgecko_udbg.h"
30
31
32static void gamecube_spin(void)
33{
34	/* spin until power button pressed */
35	for (;;)
36		cpu_relax();
37}
38
39static void gamecube_restart(char *cmd)
40{
41	local_irq_disable();
42	flipper_platform_reset();
43	gamecube_spin();
44}
45
46static void gamecube_power_off(void)
47{
48	local_irq_disable();
49	gamecube_spin();
50}
51
52static void gamecube_halt(void)
53{
54	gamecube_restart(NULL);
55}
56
57static void __init gamecube_init_early(void)
58{
59	ug_udbg_init();
60}
61
62static int __init gamecube_probe(void)
63{
64	unsigned long dt_root;
65
66	dt_root = of_get_flat_dt_root();
67	if (!of_flat_dt_is_compatible(dt_root, "nintendo,gamecube"))
68		return 0;
69
70	pm_power_off = gamecube_power_off;
71
72	return 1;
73}
74
75static void gamecube_shutdown(void)
76{
77	flipper_quiesce();
78}
79
80define_machine(gamecube) {
81	.name			= "gamecube",
82	.probe			= gamecube_probe,
83	.init_early		= gamecube_init_early,
84	.restart		= gamecube_restart,
85	.halt			= gamecube_halt,
86	.init_IRQ		= flipper_pic_probe,
87	.get_irq		= flipper_pic_get_irq,
88	.calibrate_decr		= generic_calibrate_decr,
89	.progress		= udbg_progress,
90	.machine_shutdown	= gamecube_shutdown,
91};
92
93
94static const struct of_device_id gamecube_of_bus[] = {
95	{ .compatible = "nintendo,flipper", },
96	{ },
97};
98
99static int __init gamecube_device_probe(void)
100{
101	if (!machine_is(gamecube))
102		return 0;
103
104	of_platform_bus_probe(NULL, gamecube_of_bus, NULL);
105	return 0;
106}
107device_initcall(gamecube_device_probe);
108
109