1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * arch/powerpc/platforms/embedded6xx/gamecube.c
4 *
5 * Nintendo GameCube board-specific support
6 * Copyright (C) 2004-2009 The GameCube Linux Team
7 * Copyright (C) 2007,2008,2009 Albert Herranz
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/irq.h>
13#include <linux/kexec.h>
14#include <linux/seq_file.h>
15#include <linux/of_platform.h>
16
17#include <asm/io.h>
18#include <asm/machdep.h>
19#include <asm/time.h>
20#include <asm/udbg.h>
21
22#include "flipper-pic.h"
23#include "usbgecko_udbg.h"
24
25
26static void __noreturn gamecube_spin(void)
27{
28	/* spin until power button pressed */
29	for (;;)
30		cpu_relax();
31}
32
33static void __noreturn gamecube_restart(char *cmd)
34{
35	local_irq_disable();
36	flipper_platform_reset();
37	gamecube_spin();
38}
39
40static void gamecube_power_off(void)
41{
42	local_irq_disable();
43	gamecube_spin();
44}
45
46static void __noreturn gamecube_halt(void)
47{
48	gamecube_restart(NULL);
49}
50
51static int __init gamecube_probe(void)
52{
53	pm_power_off = gamecube_power_off;
54
55	ug_udbg_init();
56
57	return 1;
58}
59
60static void gamecube_shutdown(void)
61{
62	flipper_quiesce();
63}
64
65define_machine(gamecube) {
66	.name			= "gamecube",
67	.compatible		= "nintendo,gamecube",
68	.probe			= gamecube_probe,
69	.restart		= gamecube_restart,
70	.halt			= gamecube_halt,
71	.init_IRQ		= flipper_pic_probe,
72	.get_irq		= flipper_pic_get_irq,
73	.progress		= udbg_progress,
74	.machine_shutdown	= gamecube_shutdown,
75};
76
77
78static const struct of_device_id gamecube_of_bus[] = {
79	{ .compatible = "nintendo,flipper", },
80	{ },
81};
82
83static int __init gamecube_device_probe(void)
84{
85	of_platform_bus_probe(NULL, gamecube_of_bus, NULL);
86	return 0;
87}
88machine_device_initcall(gamecube, gamecube_device_probe);
89
90