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43 lines · 777 B

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
13#include <asm/dec/reset.h>
14
15typedef void __noreturn (* noret_func_t)(void);
16
17static inline void __noreturn back_to_prom(void)
18{
19 noret_func_t func = (void *)CKSEG1ADDR(0x1fc00000);
20
21 func();
22}
23
24void __noreturn dec_machine_restart(char *command)
25{
26 back_to_prom();
27}
28
29void __noreturn dec_machine_halt(void)
30{
31 back_to_prom();
32}
33
34void __noreturn dec_machine_power_off(void)
35{
36 /* DECstations don't have a software power switch */
37 back_to_prom();
38}
39
40irqreturn_t dec_intr_halt(int irq, void *dev_id)
41{
42 dec_machine_halt();
43}