1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Cobalt Reset operations 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 5*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 6*4882a593Smuzhiyun * for more details. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Copyright (C) 1995, 1996, 1997 by Ralf Baechle 9*4882a593Smuzhiyun * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv) 10*4882a593Smuzhiyun */ 11*4882a593Smuzhiyun #include <linux/init.h> 12*4882a593Smuzhiyun #include <linux/io.h> 13*4882a593Smuzhiyun #include <linux/leds.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #include <asm/idle.h> 16*4882a593Smuzhiyun #include <asm/processor.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #include <cobalt.h> 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #define RESET_PORT ((void __iomem *)CKSEG1ADDR(0x1c000000)) 21*4882a593Smuzhiyun #define RESET 0x0f 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun DEFINE_LED_TRIGGER(power_off_led_trigger); 24*4882a593Smuzhiyun ledtrig_power_off_init(void)25*4882a593Smuzhiyunstatic int __init ledtrig_power_off_init(void) 26*4882a593Smuzhiyun { 27*4882a593Smuzhiyun led_trigger_register_simple("power-off", &power_off_led_trigger); 28*4882a593Smuzhiyun return 0; 29*4882a593Smuzhiyun } 30*4882a593Smuzhiyun device_initcall(ledtrig_power_off_init); 31*4882a593Smuzhiyun cobalt_machine_halt(void)32*4882a593Smuzhiyunvoid cobalt_machine_halt(void) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun /* 35*4882a593Smuzhiyun * turn on power off LED on RaQ 36*4882a593Smuzhiyun */ 37*4882a593Smuzhiyun led_trigger_event(power_off_led_trigger, LED_FULL); 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun local_irq_disable(); 40*4882a593Smuzhiyun while (1) { 41*4882a593Smuzhiyun if (cpu_wait) 42*4882a593Smuzhiyun cpu_wait(); 43*4882a593Smuzhiyun } 44*4882a593Smuzhiyun } 45*4882a593Smuzhiyun cobalt_machine_restart(char * command)46*4882a593Smuzhiyunvoid cobalt_machine_restart(char *command) 47*4882a593Smuzhiyun { 48*4882a593Smuzhiyun writeb(RESET, RESET_PORT); 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun /* we should never get here */ 51*4882a593Smuzhiyun cobalt_machine_halt(); 52*4882a593Smuzhiyun } 53