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 momenco_jaguar_restart(char * command)26void momenco_jaguar_restart(char *command) 27 { 28 /* base address of timekeeper portion of part */ 29 #ifdef CONFIG_MIPS64 30 void *nvram = (void*) 0xfffffffffc807000; 31 #else 32 void *nvram = (void*) 0xfc807000; 33 #endif 34 /* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */ 35 writeb(0x84, nvram + 0xff7); 36 37 /* wait for the watchdog to go off */ 38 mdelay(100+(1000/16)); 39 40 /* if the watchdog fails for some reason, let people know */ 41 printk(KERN_NOTICE "Watchdog reset failed\n"); 42 } 43 momenco_jaguar_halt(void)44void momenco_jaguar_halt(void) 45 { 46 printk(KERN_NOTICE "\n** You can safely turn off the power\n"); 47 while (1) 48 __asm__(".set\tmips3\n\t" 49 "wait\n\t" 50 ".set\tmips0"); 51 } 52 momenco_jaguar_power_off(void)53void momenco_jaguar_power_off(void) 54 { 55 momenco_jaguar_halt(); 56 } 57