summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/embedded6xx/gamecube.c
blob: 36789cec957cac11a7a23e92fcf5cc5184c59aba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
/*
 * arch/powerpc/platforms/embedded6xx/gamecube.c
 *
 * Nintendo GameCube board-specific support
 * Copyright (C) 2004-2009 The GameCube Linux Team
 * Copyright (C) 2007,2008,2009 Albert Herranz
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kexec.h>
#include <linux/seq_file.h>
#include <linux/of_platform.h>

#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/time.h>
#include <asm/udbg.h>

#include "flipper-pic.h"
#include "usbgecko_udbg.h"


static void __noreturn gamecube_spin(void)
{
	/* spin until power button pressed */
	for (;;)
		cpu_relax();
}

static void __noreturn gamecube_restart(char *cmd)
{
	local_irq_disable();
	flipper_platform_reset();
	gamecube_spin();
}

static void gamecube_power_off(void)
{
	local_irq_disable();
	gamecube_spin();
}

static void __noreturn gamecube_halt(void)
{
	gamecube_restart(NULL);
}

static int __init gamecube_probe(void)
{
	if (!of_machine_is_compatible("nintendo,gamecube"))
		return 0;

	pm_power_off = gamecube_power_off;

	ug_udbg_init();

	return 1;
}

static void gamecube_shutdown(void)
{
	flipper_quiesce();
}

define_machine(gamecube) {
	.name			= "gamecube",
	.probe			= gamecube_probe,
	.restart		= gamecube_restart,
	.halt			= gamecube_halt,
	.init_IRQ		= flipper_pic_probe,
	.get_irq		= flipper_pic_get_irq,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
	.machine_shutdown	= gamecube_shutdown,
};


static const struct of_device_id gamecube_of_bus[] = {
	{ .compatible = "nintendo,flipper", },
	{ },
};

static int __init gamecube_device_probe(void)
{
	if (!machine_is(gamecube))
		return 0;

	of_platform_bus_probe(NULL, gamecube_of_bus, NULL);
	return 0;
}
device_initcall(gamecube_device_probe);