include/asm-i386/mach-default/mach_reboot.h

   1 /*
   2  *  arch/i386/mach-generic/mach_reboot.h
   3  *
   4  *  Machine specific reboot functions for generic.
   5  *  Split out from reboot.c by Osamu Tomita <tomita@cinet.co.jp>
   6  */
   7 #ifndef _MACH_REBOOT_H
   8 #define _MACH_REBOOT_H
   9
  10 static inline void kb_wait(void)
  11 {
  12         int i;
  13
  14         for (i = 0; i < 0x10000; i++)
  15                 if ((inb_p(0x64) & 0x02) == 0)
  16                         break;
  17 }
  18
  19 static inline void mach_reboot(void)
  20 {
  21         int i;
  22         for (i = 0; i < 100; i++) {
  23                 kb_wait();
  24                 udelay(50);
  25                 outb(0x60, 0x64);       /* write Controller Command Byte */
  26                 udelay(50);
  27                 kb_wait();
  28                 udelay(50);
  29                 outb(0x14, 0x60);       /* set "System flag" */
  30                 udelay(50);
  31                 kb_wait();
  32                 udelay(50);
  33                 outb(0xfe, 0x64);       /* pulse reset low */
  34                 udelay(50);
  35         }
  36 }
  37
  38 #endif /* !_MACH_REBOOT_H */