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 #include <arch.h>
  23 #include <rtl.h>
  24 #include <debug.h>
  25 #include <mm.h>
  26 #include <portio.h>
  27
  28 #include "../../reactos/registry.h"
  29 #include "hardware.h"
  30
  31
  32 static BOOL
  33 FindApmBios(VOID)
  34 {
  35   REGS  RegsIn;
  36   REGS  RegsOut;
  37
  38   RegsIn.b.ah = 0x53;
  39   RegsIn.b.al = 0x00;
  40   RegsIn.w.bx = 0x0000;
  41
  42   Int386(0x15, &RegsIn, &RegsOut);
  43
  44   if (INT386_SUCCESS(RegsOut))
  45     {
  46       DbgPrint((DPRINT_HWDETECT, "Found APM BIOS\n"));
  47       DbgPrint((DPRINT_HWDETECT, "AH: %x\n", RegsOut.b.ah));
  48       DbgPrint((DPRINT_HWDETECT, "AL: %x\n", RegsOut.b.al));
  49       DbgPrint((DPRINT_HWDETECT, "BH: %x\n", RegsOut.b.bh));
  50       DbgPrint((DPRINT_HWDETECT, "BL: %x\n", RegsOut.b.bl));
  51       DbgPrint((DPRINT_HWDETECT, "CX: %x\n", RegsOut.w.cx));
  52
  53       return TRUE;
  54     }
  55
  56   printf("No APM BIOS found\n");
  57
  58   return FALSE;
  59 }
  60
  61
  62 VOID
  63 DetectApmBios(FRLDRHKEY SystemKey, ULONG *BusNumber)
  64 {
  65   char Buffer[80];
  66   FRLDRHKEY BiosKey;
  67   LONG Error;
  68
  69   if (FindApmBios())
  70     {
  71       /* Create new bus key */
  72       sprintf(Buffer,
  73               "MultifunctionAdapter\\%u", *BusNumber);
  74       Error = RegCreateKey(SystemKey,
  75                            Buffer,
  76                            &BiosKey);
  77       if (Error != ERROR_SUCCESS)
  78         {
  79           DbgPrint((DPRINT_HWDETECT, "RegCreateKey() failed (Error %u)\n", (int)Error));
  80           return;
  81         }
  82
  83 #if 0
  84       /* Set 'Component Information' */
  85       SetComponentInformation(BiosKey,
  86                               0x0,
  87                               0x0,
  88                               0xFFFFFFFF);
  89 #endif
  90
  91       /* Increment bus number */
  92       (*BusNumber)++;
  93
  94       /* Set 'Identifier' value */
  95       Error = RegSetValue(BiosKey,
  96                           "Identifier",
  97                           REG_SZ,
  98                           "APM",
  99                           4);
 100       if (Error != ERROR_SUCCESS)
 101         {
 102           DbgPrint((DPRINT_HWDETECT, "RegSetValue() failed (Error %u)\n", (int)Error));
 103           return;
 104         }
 105
 106     }
 107
 108   /* FIXME: Add congiguration data */
 109 }
 110
 111 /* EOF */