reactos/boot/freeldr/freeldr/arch/i386/hwapm.c

   1 /*
   2  *  FreeLoader
   3  *
   4  *  Copyright (C) 2004  Eric Kohl
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <freeldr.h>
  22
  23 #define NDEBUG
  24 #include <debug.h>
  25
  26 static BOOL
  27 FindApmBios(VOID)
  28 {
  29   REGS  RegsIn;
  30   REGS  RegsOut;
  31
  32   RegsIn.b.ah = 0x53;
  33   RegsIn.b.al = 0x00;
  34   RegsIn.w.bx = 0x0000;
  35
  36   Int386(0x15, &RegsIn, &RegsOut);
  37
  38   if (INT386_SUCCESS(RegsOut))
  39     {
  40       DbgPrint((DPRINT_HWDETECT, "Found APM BIOS\n"));
  41       DbgPrint((DPRINT_HWDETECT, "AH: %x\n", RegsOut.b.ah));
  42       DbgPrint((DPRINT_HWDETECT, "AL: %x\n", RegsOut.b.al));
  43       DbgPrint((DPRINT_HWDETECT, "BH: %x\n", RegsOut.b.bh));
  44       DbgPrint((DPRINT_HWDETECT, "BL: %x\n", RegsOut.b.bl));
  45       DbgPrint((DPRINT_HWDETECT, "CX: %x\n", RegsOut.w.cx));
  46
  47       return TRUE;
  48     }
  49
  50   printf("No APM BIOS found\n");
  51
  52   return FALSE;
  53 }
  54
  55
  56 VOID
  57 DetectApmBios(FRLDRHKEY SystemKey, ULONG *BusNumber)
  58 {
  59   WCHAR Buffer[80];
  60   FRLDRHKEY BiosKey;
  61   LONG Error;
  62
  63   if (FindApmBios())
  64     {
  65       /* Create new bus key */
  66       swprintf(Buffer,
  67               L"MultifunctionAdapter\\%u", *BusNumber);
  68       Error = RegCreateKey(SystemKey,
  69                            Buffer,
  70                            &BiosKey);
  71       if (Error != ERROR_SUCCESS)
  72         {
  73           DbgPrint((DPRINT_HWDETECT, "RegCreateKey() failed (Error %u)\n", (int)Error));
  74           return;
  75         }
  76
  77 #if 0
  78       /* Set 'Component Information' */
  79       SetComponentInformation(BiosKey,
  80                               0x0,
  81                               0x0,
  82                               0xFFFFFFFF);
  83 #endif
  84
  85       /* Increment bus number */
  86       (*BusNumber)++;
  87
  88       /* Set 'Identifier' value */
  89       Error = RegSetValue(BiosKey,
  90                           L"Identifier",
  91                           REG_SZ,
  92                           (PCHAR)L"APM",
  93                           4 * sizeof(WCHAR));
  94       if (Error != ERROR_SUCCESS)
  95         {
  96           DbgPrint((DPRINT_HWDETECT, "RegSetValue() failed (Error %u)\n", (int)Error));
  97           return;
  98         }
  99
 100     }
 101
 102   /* FIXME: Add congiguration data */
 103 }
 104
 105 /* EOF */