cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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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