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Linux/arch/mips/dec/reset.c

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

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