167da469e5
Added cpu_wait() to machine_halt(). For the power reduction in halt. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
51 lines
1 KiB
C
51 lines
1 KiB
C
/*
|
|
* 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/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();
|
|
}
|