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
gamecube_spin(void)32 static void gamecube_spin(void)
33 {
34 /* spin until power button pressed */
35 for (;;)
36 cpu_relax();
37 }
38
gamecube_restart(char * cmd)39 static void gamecube_restart(char *cmd)
40 {
41 local_irq_disable();
42 flipper_platform_reset();
43 gamecube_spin();
44 }
45
gamecube_power_off(void)46 static void gamecube_power_off(void)
47 {
48 local_irq_disable();
49 gamecube_spin();
50 }
51
gamecube_halt(void)52 static void gamecube_halt(void)
53 {
54 gamecube_restart(NULL);
55 }
56
gamecube_init_early(void)57 static void __init gamecube_init_early(void)
58 {
59 ug_udbg_init();
60 }
61
gamecube_probe(void)62 static 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
gamecube_shutdown(void)75 static void gamecube_shutdown(void)
76 {
77 flipper_quiesce();
78 }
79
define_machine(gamecube)80 define_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
94 static const struct of_device_id gamecube_of_bus[] = {
95 { .compatible = "nintendo,flipper", },
96 { },
97 };
98
gamecube_device_probe(void)99 static 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 }
107 device_initcall(gamecube_device_probe);
108
109