// SPDX-License-Identifier: GPL-2.0 /* * ip30-power.c: Software powerdown and reset handling for IP30 architecture. * * Copyright (C) 2004-2007 Stanislaw Skowronek <skylark@unaligned.org> * 2014 Joshua Kinard <linux@kumba.dev> * 2009 Johannes Dickgreber <tanzy@gmx.de> */ #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/sched.h> #include <linux/notifier.h> #include <linux/delay.h> #include <linux/rtc/ds1685.h> #include <linux/interrupt.h> #include <linux/pm.h> #include <asm/reboot.h> #include <asm/sgi/heart.h> static void __noreturn ip30_machine_restart(char *cmd) { /* * Execute HEART cold reset * Yes, it's cold-HEARTed! */ heart_write((heart_read(&heart_regs->mode) | HM_COLD_RST), &heart_regs->mode); unreachable(); } static int __init ip30_reboot_setup(void) { _machine_restart = ip30_machine_restart; return 0; } subsys_initcall(ip30_reboot_setup);