/* * Cobalt Reset operations * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1995, 1996, 1997 by Ralf Baechle * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv) */ #include <linux/init.h> #include <linux/io.h> #include <linux/leds.h> #include <asm/idle.h> #include <asm/processor.h> #include <cobalt.h> #define RESET_PORT ((void __iomem *)CKSEG1ADDR(0x1c000000)) #define RESET 0x0f DEFINE_LED_TRIGGER(power_off_led_trigger); static int __init ledtrig_power_off_init(void) { led_trigger_register_simple("power-off", &power_off_led_trigger); return 0; } device_initcall(ledtrig_power_off_init); void cobalt_machine_halt(void) { /* * turn on power off LED on RaQ */ led_trigger_event(power_off_led_trigger, LED_FULL); local_irq_disable(); while (1) { if (cpu_wait) cpu_wait(); } } void cobalt_machine_restart(char *command) { writeb(RESET, RESET_PORT); /* we should never get here */ cobalt_machine_halt(); }