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/*
* 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/sched.h>
#include <linux/mm.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/reboot.h>
#include <asm/system.h>
#include <asm/mipsregs.h>
#include <asm/cobalt/cobalt.h>
void cobalt_machine_halt(void)
{
int state, last, diff;
unsigned long mark;
/*
* turn off bar on Qube, flash power off LED on RaQ (0.5Hz)
*
* restart if ENTER and SELECT are pressed
*/
last = COBALT_KEY_PORT;
for (state = 0;;) {
state ^= COBALT_LED_POWER_OFF;
COBALT_LED_PORT = state;
diff = COBALT_KEY_PORT ^ last;
last ^= diff;
if((diff & (COBALT_KEY_ENTER | COBALT_KEY_SELECT)) && !(~last & (COBALT_KEY_ENTER | COBALT_KEY_SELECT)))
COBALT_LED_PORT = COBALT_LED_RESET;
for (mark = jiffies; jiffies - mark < HZ;)
;
}
}
void cobalt_machine_restart(char *command)
{
COBALT_LED_PORT = COBALT_LED_RESET;
/* we should never get here */
cobalt_machine_halt();
}
/*
* This triggers the luser mode device driver for the power switch ;-)
*/
void cobalt_machine_power_off(void)
{
printk("You can switch the machine off now.\n");
cobalt_machine_halt();
}
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