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95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/*
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* FreeLoader
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*
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* Copyright (C) 2004 Eric Kohl
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <freeldr.h>
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#include <debug.h>
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DBG_DEFAULT_CHANNEL(HWDETECT);
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static BOOLEAN
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FindApmBios(VOID)
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{
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REGS RegsIn;
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REGS RegsOut;
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RegsIn.b.ah = 0x53;
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RegsIn.b.al = 0x00;
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RegsIn.w.bx = 0x0000;
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Int386(0x15, &RegsIn, &RegsOut);
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if (INT386_SUCCESS(RegsOut))
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{
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TRACE("Found APM BIOS\n");
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TRACE("AH: %x\n", RegsOut.b.ah);
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TRACE("AL: %x\n", RegsOut.b.al);
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TRACE("BH: %x\n", RegsOut.b.bh);
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TRACE("BL: %x\n", RegsOut.b.bl);
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TRACE("CX: %x\n", RegsOut.w.cx);
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return TRUE;
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}
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TRACE("No APM BIOS found\n");
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return FALSE;
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}
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VOID
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DetectApmBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
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{
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PCONFIGURATION_COMPONENT_DATA BiosKey;
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PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
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ULONG Size;
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Size = sizeof(CM_PARTIAL_RESOURCE_LIST) -
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sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);
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if (FindApmBios())
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{
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/* Create 'Configuration Data' value */
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PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
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memset(PartialResourceList, 0, Size);
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PartialResourceList->Version = 0;
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PartialResourceList->Revision = 0;
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PartialResourceList->Count = 0;
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/* Create new bus key */
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FldrCreateComponentKey(SystemKey,
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AdapterClass,
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MultiFunctionAdapter,
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0x0,
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0x0,
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0xFFFFFFFF,
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"APM",
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PartialResourceList,
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Size,
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&BiosKey);
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/* Increment bus number */
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(*BusNumber)++;
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}
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/* FIXME: Add configuration data */
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}
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/* EOF */
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