arch/mips/lasat/reset.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Thomas Horsten <thh@lasat.com>
   4  * Copyright (C) 2000 LASAT Networks A/S.
   5  *
   6  * Reset the LASAT board.
   7  */
   8 #include <linux/kernel.h>
   9 #include <linux/pm.h>
  10
  11 #include <asm/reboot.h>
  12 #include <asm/lasat/lasat.h>
  13
  14 #include "picvue.h"
  15 #include "prom.h"
  16
  17 static void lasat_machine_restart(char *command);
  18 static void lasat_machine_halt(void);
  19
  20 /* Used to set machine to boot in service mode via /proc interface */
  21 int lasat_boot_to_service;
  22
  23 static void lasat_machine_restart(char *command)
  24 {
  25         local_irq_disable();
  26
  27         if (lasat_boot_to_service) {
  28                 *(volatile unsigned int *)0xa0000024 = 0xdeadbeef;
  29                 *(volatile unsigned int *)0xa00000fc = 0xfedeabba;
  30         }
  31         *lasat_misc->reset_reg = 0xbedead;
  32         for (;;) ;
  33 }
  34
  35 static void lasat_machine_halt(void)
  36 {
  37         local_irq_disable();
  38
  39         prom_monitor();
  40         for (;;) ;
  41 }
  42
  43 void lasat_reboot_setup(void)
  44 {
  45         _machine_restart = lasat_machine_restart;
  46         _machine_halt = lasat_machine_halt;
  47         pm_power_off = lasat_machine_halt;
  48 }