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 along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 */ 20 21 #include <freeldr.h> 22 23 #include <debug.h> 24 25 DBG_DEFAULT_CHANNEL(HWDETECT); 26 27 static BOOLEAN 28 FindApmBios(VOID) 29 { 30 REGS RegsIn; 31 REGS RegsOut; 32 33 RegsIn.b.ah = 0x53; 34 RegsIn.b.al = 0x00; 35 RegsIn.w.bx = 0x0000; 36 37 Int386(0x15, &RegsIn, &RegsOut); 38 39 if (INT386_SUCCESS(RegsOut)) 40 { 41 TRACE("Found APM BIOS\n"); 42 TRACE("AH: %x\n", RegsOut.b.ah); 43 TRACE("AL: %x\n", RegsOut.b.al); 44 TRACE("BH: %x\n", RegsOut.b.bh); 45 TRACE("BL: %x\n", RegsOut.b.bl); 46 TRACE("CX: %x\n", RegsOut.w.cx); 47 48 return TRUE; 49 } 50 51 TRACE("No APM BIOS found\n"); 52 53 return FALSE; 54 } 55 56 57 VOID 58 DetectApmBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber) 59 { 60 PCONFIGURATION_COMPONENT_DATA BiosKey; 61 PCM_PARTIAL_RESOURCE_LIST PartialResourceList; 62 ULONG Size; 63 64 Size = sizeof(CM_PARTIAL_RESOURCE_LIST) - 65 sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR); 66 67 if (FindApmBios()) 68 { 69 /* Create 'Configuration Data' value */ 70 PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST); 71 memset(PartialResourceList, 0, Size); 72 PartialResourceList->Version = 0; 73 PartialResourceList->Revision = 0; 74 PartialResourceList->Count = 0; 75 76 /* Create new bus key */ 77 FldrCreateComponentKey(SystemKey, 78 AdapterClass, 79 MultiFunctionAdapter, 80 0x0, 81 0x0, 82 0xFFFFFFFF, 83 "APM", 84 PartialResourceList, 85 Size, 86 &BiosKey); 87 88 /* Increment bus number */ 89 (*BusNumber)++; 90 } 91 92 /* FIXME: Add configuration data */ 93 } 94 95 /* EOF */ 96