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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e90d71d0 AH |
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 | |
e90d71d0 AH |
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/prom.h> | |
20 | #include <asm/time.h> | |
21 | #include <asm/udbg.h> | |
22 | ||
23 | #include "flipper-pic.h" | |
24 | #include "usbgecko_udbg.h" | |
25 | ||
26 | ||
95ec77c0 | 27 | static void __noreturn gamecube_spin(void) |
e90d71d0 AH |
28 | { |
29 | /* spin until power button pressed */ | |
30 | for (;;) | |
31 | cpu_relax(); | |
32 | } | |
33 | ||
95ec77c0 | 34 | static void __noreturn gamecube_restart(char *cmd) |
e90d71d0 AH |
35 | { |
36 | local_irq_disable(); | |
37 | flipper_platform_reset(); | |
38 | gamecube_spin(); | |
39 | } | |
40 | ||
41 | static void gamecube_power_off(void) | |
42 | { | |
43 | local_irq_disable(); | |
44 | gamecube_spin(); | |
45 | } | |
46 | ||
95ec77c0 | 47 | static void __noreturn gamecube_halt(void) |
e90d71d0 AH |
48 | { |
49 | gamecube_restart(NULL); | |
50 | } | |
51 | ||
e90d71d0 AH |
52 | static int __init gamecube_probe(void) |
53 | { | |
56571384 | 54 | if (!of_machine_is_compatible("nintendo,gamecube")) |
e90d71d0 AH |
55 | return 0; |
56 | ||
9178ba29 AG |
57 | pm_power_off = gamecube_power_off; |
58 | ||
f2d57694 BH |
59 | ug_udbg_init(); |
60 | ||
e90d71d0 AH |
61 | return 1; |
62 | } | |
63 | ||
64 | static void gamecube_shutdown(void) | |
65 | { | |
66 | flipper_quiesce(); | |
67 | } | |
68 | ||
e90d71d0 AH |
69 | define_machine(gamecube) { |
70 | .name = "gamecube", | |
71 | .probe = gamecube_probe, | |
e90d71d0 | 72 | .restart = gamecube_restart, |
e90d71d0 AH |
73 | .halt = gamecube_halt, |
74 | .init_IRQ = flipper_pic_probe, | |
75 | .get_irq = flipper_pic_get_irq, | |
76 | .calibrate_decr = generic_calibrate_decr, | |
77 | .progress = udbg_progress, | |
78 | .machine_shutdown = gamecube_shutdown, | |
e90d71d0 AH |
79 | }; |
80 | ||
81 | ||
ce6d73c9 | 82 | static const struct of_device_id gamecube_of_bus[] = { |
e90d71d0 AH |
83 | { .compatible = "nintendo,flipper", }, |
84 | { }, | |
85 | }; | |
86 | ||
87 | static int __init gamecube_device_probe(void) | |
88 | { | |
89 | if (!machine_is(gamecube)) | |
90 | return 0; | |
91 | ||
92 | of_platform_bus_probe(NULL, gamecube_of_bus, NULL); | |
93 | return 0; | |
94 | } | |
95 | device_initcall(gamecube_device_probe); | |
96 |