1/*
 2 *  linux/arch/mips/sni/process.c
 3 *
 4 *  Reset a SNI machine.
 5 */
 
 
 6#include <asm/io.h>
 7#include <asm/reboot.h>
 8#include <asm/sni.h>
 9
10/*
11 * This routine reboots the machine by asking the keyboard
12 * controller to pulse the reset-line low. We try that for a while,
13 * and if it doesn't work, we do some other stupid things.
14 */
15static inline void kb_wait(void)
16{
17	int i;
18
19	for (i = 0; i < 0x10000; i++)
20		if ((inb_p(0x64) & 0x02) == 0)
21			break;
22}
23
24/* XXX This ends up at the ARC firmware prompt ...  */
25void sni_machine_restart(char *command)
26{
27	int i, j;
28
29	/* This does a normal via the keyboard controller like a PC.
30	   We can do that easier ...  */
31	local_irq_disable();
32	for (;;) {
33		for (i = 0; i < 100; i++) {
34			kb_wait();
35			for (j = 0; j < 100000 ; j++)
36				/* nothing */;
37			outb_p(0xfe, 0x64);	 /* pulse reset low */
 
38		}
39	}
40}
41
42void sni_machine_power_off(void)
43{
44	*(volatile unsigned char *)PCIMT_CSWCSM = 0xfd;
45}

 1/*
 2 *  linux/arch/mips/sni/process.c
 3 *
 4 *  Reset a SNI machine.
 5 */
 6#include <linux/delay.h>
 7
 8#include <asm/io.h>
 9#include <asm/reboot.h>
10#include <asm/sni.h>
11
12/*
13 * This routine reboots the machine by asking the keyboard
14 * controller to pulse the reset-line low. We try that for a while,
15 * and if it doesn't work, we do some other stupid things.
16 */
17static inline void kb_wait(void)
18{
19	int i;
20
21	for (i = 0; i < 0x10000; i++)
22		if ((inb_p(0x64) & 0x02) == 0)
23			break;
24}
25
26/* XXX This ends up at the ARC firmware prompt ...  */
27void sni_machine_restart(char *command)
28{
29	int i;
30
31	/* This does a normal via the keyboard controller like a PC.
32	   We can do that easier ...  */
33	local_irq_disable();
34	for (;;) {
35		for (i = 0; i < 100; i++) {
36			kb_wait();
37			udelay(50);
 
38			outb_p(0xfe, 0x64);	 /* pulse reset low */
39			udelay(50);
40		}
41	}
42}
43
44void sni_machine_power_off(void)
45{
46	*(volatile unsigned char *)PCIMT_CSWCSM = 0xfd;
47}