cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

reset.c (1090B)

      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/idle.h>
     16#include <asm/processor.h>
     17
     18#include <cobalt.h>
     19
     20#define RESET_PORT	((void __iomem *)CKSEG1ADDR(0x1c000000))
     21#define RESET		0x0f
     22
     23DEFINE_LED_TRIGGER(power_off_led_trigger);
     24
     25static int __init ledtrig_power_off_init(void)
     26{
     27	led_trigger_register_simple("power-off", &power_off_led_trigger);
     28	return 0;
     29}
     30device_initcall(ledtrig_power_off_init);
     31
     32void cobalt_machine_halt(void)
     33{
     34	/*
     35	 * turn on power off LED on RaQ
     36	 */
     37	led_trigger_event(power_off_led_trigger, LED_FULL);
     38
     39	local_irq_disable();
     40	while (1) {
     41		if (cpu_wait)
     42			cpu_wait();
     43	}
     44}
     45
     46void cobalt_machine_restart(char *command)
     47{
     48	writeb(RESET, RESET_PORT);
     49
     50	/* we should never get here */
     51	cobalt_machine_halt();
     52}