reactos/hal/halx86/generic/pwroff.c

   1 /* $Id$
   2  *
   3  * FILE       : reactos/hal/x86/apm.c
   4  * DESCRIPTION: Turn CPU off...
   5  * PROJECT    : ReactOS Operating System
   6  * AUTHOR     : D. Lindauer (July 11 1997)
   7  * NOTE       : This program is public domain
   8  * REVISIONS  :
   9  *      1999-12-26
  10  */
  11
  12 #define APM_FUNCTION_AVAILABLE  0x5300
  13 #define APM_FUNCTION_CONNREAL   0x5301
  14 #define APM_FUNCTION_POWEROFF   0x5307
  15 #define APM_FUNCTION_ENABLECPU  0x530d
  16 #define APM_FUNCTION_ENABLEAPM  0x530e
  17
  18 #define APM_DEVICE_BIOS         0
  19 #define APM_DEVICE_ALL          1
  20
  21 #define APM_MODE_DISABLE        0
  22 #define APM_MODE_ENABLE         1
  23
  24
  25
  26 #if defined(__GNUC__)
  27
  28 nopm    db      'No power management functionality',10,13,'$'
  29 errmsg  db      'Power management error',10,13,'$'
  30 wrongver db     'Need APM version 1.1 or better',10,13,'$'
  31 ;
  32 ; Entry point
  33 ;
  34 go:
  35         mov     dx,offset nopm
  36         jc      error
  37         cmp     ax,101h                 ; See if version 1.1 or greater
  38         mov     dx,offset wrongver
  39         jc      error
  40
  41         mov     [ver],ax
  42         mov     ax,5301h                ; Do a real mode connection
  43         mov     bx,0                    ; device = BIOS
  44         int     15h
  45         jnc     noconerr
  46
  47         cmp     ah,2                    ; Pass if already connected
  48         mov     dx,offset errmsg        ; else error
  49         jnz     error
  50 noconerr:
  51         mov     ax,530eh                ; Enable latest version of APM
  52         mov     bx,0                    ; device = BIOS
  53         mov     cx,[ver]                ; version
  54         int     15h
  55         mov     dx,offset errmsg
  56         jc      error
  57
  58         mov     ax,530dh                ; Now engage and enable CPU management
  59         mov     bx,1                    ; device = all
  60         mov     cx,1                    ; enable
  61         int     15h
  62         mov     dx,offset errmsg
  63         jc      error
  64
  65         mov     ax,530fh
  66         mov     bx,1                    ; device = ALL
  67         mov     cx,1                    ; enable
  68         int     15h
  69         mov     dx,offset errmsg
  70         jc      error
  71
  72         mov     dx,offset errmsg
  73 error:
  74         call    print
  75         mov     ax,4c01h
  76         int     21h
  77         int 3
  78         end start
  79
  80
  81 BOOLEAN
  82 ApmCall (
  83         DWORD   Function,
  84         DWORD   Device,
  85         DWORD   Mode
  86         )
  87 {
  88         /* AX <== Function */
  89         /* BX <== Device */
  90         /* CX <== Mode */
  91         __asm__("int 21\n"); /* 0x15 */
  92 }
  93
  94 #elif defined(_MSC_VER)
  95 #else
  96 #error Unknown compiler for inline assembler
  97 #endif
  98
  99
 100 BOOLEAN
 101 HalPowerOff (VOID)
 102 {
 103         ApmCall (
 104                 APM_FUNCTION_AVAILABLE,
 105                 APM_DEVICE_BIOS,
 106                 0
 107                 );
 108         ApmCall (
 109                 APM_FUNCTION_ENABLEAPM,
 110                 );
 111         /* Shutdown CPU */
 112         ApmCall (
 113                 APM_FUNCTION_POWEROFF,
 114                 APM_DEVICE_ALL,
 115                 3
 116                 );
 117         return TRUE;
 118 }
 119
 120
 121 /* EOF */