1/* 2 * This program is free software; you can redistribute it and/or modify it 3 * under the terms of the GNU General Public License as published by the 4 * Free Software Foundation; either version 2 of the License, or (at your 5 * option) any later version. 6 * 7 * Copyright (C) 1997, 2001 Ralf Baechle 8 * Copyright 2001 MontaVista Software Inc. 9 * Author: jsun@mvista.com or jsun@junsun.net 10 * 11 * Copyright (C) 2002 Momentum Computer Inc. 12 * Author: Matthew Dharm <mdharm@momenco.com> 13 * 14 * Louis Hamilton, Red Hat, Inc. 15 * hamilton@redhat.com [MIPS64 modifications] 16 */ 17#include <linux/sched.h> 18#include <linux/mm.h> 19#include <asm/io.h> 20#include <asm/pgtable.h> 21#include <asm/processor.h> 22#include <asm/reboot.h> 23#include <asm/system.h> 24#include <linux/delay.h> 25 26void momenco_ocelot_restart(char *command) 27{ 28 /* base address of timekeeper portion of part */ 29 void *nvram = (void *) 30#ifdef CONFIG_64BIT 31 0xfffffffffc807000; 32#else 33 0xfc807000; 34#endif 35 36 /* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */ 37 writeb(0x84, nvram + 0xff7); 38 39 /* wait for the watchdog to go off */ 40 mdelay(100+(1000/16)); 41 42 /* if the watchdog fails for some reason, let people know */ 43 printk(KERN_NOTICE "Watchdog reset failed\n"); 44} 45 46void momenco_ocelot_halt(void) 47{ 48 printk(KERN_NOTICE "\n** You can safely turn off the power\n"); 49 while (1) 50 __asm__(".set\tmips3\n\t" 51 "wait\n\t" 52 ".set\tmips0"); 53} 54 55void momenco_ocelot_power_off(void) 56{ 57 momenco_ocelot_halt(); 58} 59