1/* 2 * Cobalt Reset operations 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file "COPYING" in the main directory of this archive 6 * for more details. 7 * 8 * Copyright (C) 1995, 1996, 1997 by Ralf Baechle 9 * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv) 10 */ 11#include <linux/init.h> 12#include <linux/io.h> 13#include <linux/leds.h> 14 15#include <asm/processor.h> 16 17#include <cobalt.h> 18 19#define RESET_PORT ((void __iomem *)CKSEG1ADDR(0x1c000000)) 20#define RESET 0x0f 21 22DEFINE_LED_TRIGGER(power_off_led_trigger); 23 24static int __init ledtrig_power_off_init(void) 25{ 26 led_trigger_register_simple("power-off", &power_off_led_trigger); 27 return 0; 28} 29device_initcall(ledtrig_power_off_init); 30 31void cobalt_machine_halt(void) 32{ 33 /* 34 * turn on power off LED on RaQ 35 */ 36 led_trigger_event(power_off_led_trigger, LED_FULL); 37 38 local_irq_disable(); 39 while (1) { 40 if (cpu_wait) 41 cpu_wait(); 42 } 43} 44 45void cobalt_machine_restart(char *command) 46{ 47 writeb(RESET, RESET_PORT); 48 49 /* we should never get here */ 50 cobalt_machine_halt(); 51} 52