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/system.h> 9#include <asm/sni.h> 10 11/* 12 * This routine reboots the machine by asking the keyboard 13 * controller to pulse the reset-line low. We try that for a while, 14 * and if it doesn't work, we do some other stupid things. 15 */ 16static inline void kb_wait(void) 17{ 18 int i; 19 20 for (i = 0; i < 0x10000; i++) 21 if ((inb_p(0x64) & 0x02) == 0) 22 break; 23} 24 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_halt(void) 43{ 44} 45 46void sni_machine_power_off(void) 47{ 48 *(volatile unsigned char *)PCIMT_CSWCSM = 0xfd; 49} 50