release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/dec/reset.c

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