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 BOOLEAN
  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       DPRINTM(DPRINT_HWDETECT, "Found APM BIOS\n");
  41       DPRINTM(DPRINT_HWDETECT, "AH: %x\n", RegsOut.b.ah);
  42       DPRINTM(DPRINT_HWDETECT, "AL: %x\n", RegsOut.b.al);
  43       DPRINTM(DPRINT_HWDETECT, "BH: %x\n", RegsOut.b.bh);
  44       DPRINTM(DPRINT_HWDETECT, "BL: %x\n", RegsOut.b.bl);
  45       DPRINTM(DPRINT_HWDETECT, "CX: %x\n", RegsOut.w.cx);
  46
  47       return TRUE;
  48     }
  49
  50   DPRINTM(DPRINT_HWDETECT, "No APM BIOS found\n");
  51
  52   return FALSE;
  53 }
  54
  55
  56 VOID
  57 DetectApmBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
  58 {
  59     PCONFIGURATION_COMPONENT_DATA BiosKey;
  60     CM_PARTIAL_RESOURCE_LIST PartialResourceList;
  61
  62     if (FindApmBios())
  63     {
  64         /* Create new bus key */
  65         FldrCreateComponentKey(SystemKey,
  66                                L"MultifunctionAdapter",
  67                                *BusNumber,
  68                                AdapterClass,
  69                                MultiFunctionAdapter,
  70                                &BiosKey);
  71
  72         /* Set 'Component Information' */
  73         FldrSetComponentInformation(BiosKey,
  74                                     0x0,
  75                                     0x0,
  76                                     0xFFFFFFFF);
  77
  78         /* Set 'Configuration Data' value */
  79         memset(&PartialResourceList, 0, sizeof(CM_PARTIAL_RESOURCE_LIST));
  80         PartialResourceList.Version = 0;
  81         PartialResourceList.Revision = 0;
  82         PartialResourceList.Count = 0;
  83         FldrSetConfigurationData(BiosKey,
  84                                  &PartialResourceList,
  85                                  sizeof(CM_PARTIAL_RESOURCE_LIST) -
  86                                  sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR));
  87
  88         /* Increment bus number */
  89         (*BusNumber)++;
  90
  91         /* Set 'Identifier' value */
  92         FldrSetIdentifier(BiosKey, "APM");
  93     }
  94
  95     /* FIXME: Add configuration data */
  96 }
  97
  98 /* EOF */