gamecube.c (1797B)
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 if (!of_machine_is_compatible("nintendo,gamecube")) 54 return 0; 55 56 pm_power_off = gamecube_power_off; 57 58 ug_udbg_init(); 59 60 return 1; 61} 62 63static void gamecube_shutdown(void) 64{ 65 flipper_quiesce(); 66} 67 68define_machine(gamecube) { 69 .name = "gamecube", 70 .probe = gamecube_probe, 71 .restart = gamecube_restart, 72 .halt = gamecube_halt, 73 .init_IRQ = flipper_pic_probe, 74 .get_irq = flipper_pic_get_irq, 75 .calibrate_decr = generic_calibrate_decr, 76 .progress = udbg_progress, 77 .machine_shutdown = gamecube_shutdown, 78}; 79 80 81static const struct of_device_id gamecube_of_bus[] = { 82 { .compatible = "nintendo,flipper", }, 83 { }, 84}; 85 86static int __init gamecube_device_probe(void) 87{ 88 if (!machine_is(gamecube)) 89 return 0; 90 91 of_platform_bus_probe(NULL, gamecube_of_bus, NULL); 92 return 0; 93} 94device_initcall(gamecube_device_probe); 95