/arch/mips/dec/reset.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Reset a DECstation machine.
 4 *
 5 * Copyright (C) 199x  the Anonymous
 6 * Copyright (C) 2001, 2002, 2003  Maciej W. Rozycki
 7 */
 8#include <linux/interrupt.h>
 9#include <linux/linkage.h>
10
11#include <asm/addrspace.h>
12
13typedef void __noreturn (* noret_func_t)(void);
14
15static inline void __noreturn back_to_prom(void)
16{
17	noret_func_t func = (void *)CKSEG1ADDR(0x1fc00000);
18
19	func();
20}
21
22void __noreturn dec_machine_restart(char *command)
23{
24	back_to_prom();
25}
26
27void __noreturn dec_machine_halt(void)
28{
29	back_to_prom();
30}
31
32void __noreturn dec_machine_power_off(void)
33{
34    /* DECstations don't have a software power switch */
35	back_to_prom();
36}
37
38irqreturn_t dec_intr_halt(int irq, void *dev_id)
39{
40	dec_machine_halt();
41}