arch/all-pc/exec/powerstate_handlers.c

   1 /*
   2     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: default x86 power state handlers
   6     Lang: english
   7 */
   8
   9 #include <exec/interrupts.h>
  10 #include <asm/io.h>
  11
  12 #include <proto/exec.h>
  13
  14 #define __AROS_KERNEL__
  15
  16 #include "exec_intern.h"
  17
  18 /* Call the kernel to perform a Cold Reset */
  19 AROS_INTH1(Exec_X86ColdResetHandler, struct Interrupt *, handler)
  20 {
  21     AROS_INTFUNC_INIT
  22
  23     UBYTE action = handler->is_Node.ln_Type;
  24
  25     if (action == SD_ACTION_COLDREBOOT)
  26     {
  27         krnSysCallChangePMState(0xFF);
  28     }
  29
  30     return FALSE;
  31
  32     AROS_INTFUNC_EXIT
  33 }
  34
  35 /* Call the kernel to perform a Warm Reset */
  36 AROS_INTH1(Exec_X86WarmResetHandler, struct Interrupt *, handler)
  37 {
  38     AROS_INTFUNC_INIT
  39
  40     UBYTE action = handler->is_Node.ln_Type;
  41
  42     if (action == SD_ACTION_WARMREBOOT)
  43     {
  44         /* Tell kernel to reboot */
  45         __asm__ __volatile__ ("int $0xfe"::"a"(0x100));
  46     }
  47
  48     /* We really should not return from that */
  49     return FALSE;
  50
  51     AROS_INTFUNC_EXIT
  52 }
  53
  54 /* This reset handler is called at the end of the shut down
  55  * chain (after the power-off screen), and calls the kernel
  56  * provided routine to power off the hardware if possible.
  57  */
  58 AROS_INTH1(Exec_X86ShutdownHandler, struct Interrupt *, handler)
  59 {
  60     AROS_INTFUNC_INIT
  61
  62     SuperState();
  63     while (TRUE)
  64     {
  65         /*
  66          * Either we will forever loop looking for a
  67          * syscall shutdown handler, or call an appropriate one =)
  68          */
  69
  70         krnSysCallChangePMState(0);
  71     };
  72
  73     /* We really should not return from that */
  74     return FALSE;
  75
  76     AROS_INTFUNC_EXIT
  77 }