52 строки
973 B
C
52 строки
973 B
C
|
/*
|
||
|
|
* linux/arch/mips/sni/process.c
|
||
|
|
*
|
||
|
|
* Reset a SNI machine.
|
||
|
|
*/
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/reboot.h>
|
||
|
|
#include <asm/system.h>
|
||
|
|
#include <asm/sni.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This routine reboots the machine by asking the keyboard
|
||
|
|
* controller to pulse the reset-line low. We try that for a while,
|
||
|
|
* and if it doesn't work, we do some other stupid things.
|
||
|
|
*/
|
||
|
|
static inline void
|
||
|
|
kb_wait(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i=0; i<0x10000; i++)
|
||
|
|
if ((inb_p(0x64) & 0x02) == 0)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* XXX This ends up at the ARC firmware prompt ... */
|
||
|
|
void sni_machine_restart(char *command)
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
|
||
|
|
/* This does a normal via the keyboard controller like a PC.
|
||
|
|
We can do that easier ... */
|
||
|
|
local_irq_disable();
|
||
|
|
for (;;) {
|
||
|
|
for (i=0; i<100; i++) {
|
||
|
|
kb_wait();
|
||
|
|
for(j = 0; j < 100000 ; j++)
|
||
|
|
/* nothing */;
|
||
|
|
outb_p(0xfe,0x64); /* pulse reset low */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void sni_machine_halt(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void sni_machine_power_off(void)
|
||
|
|
{
|
||
|
|
*(volatile unsigned char *)PCIMT_CSWCSM = 0xfd;
|
||
|
|
}
|