43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
// BIOS configuration table.
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//
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// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
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// Copyright (C) 2002 MandrakeSoft S.A.
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//
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// This file may be distributed under the terms of the GNU LGPLv3 license.
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#include "biosvar.h" // CONFIG_BIOS_TABLE
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// DMA channel 3 used by hard disk BIOS
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#define CBT_F1_DMA3USED (1<<7)
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// 2nd interrupt controller (8259) installed
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#define CBT_F1_2NDPIC (1<<6)
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// Real-Time Clock installed
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#define CBT_F1_RTC (1<<5)
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// INT 15/AH=4Fh called upon INT 09h
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#define CBT_F1_INT154F (1<<4)
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// wait for external event (INT 15/AH=41h) supported
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#define CBT_F1_WAITEXT (1<<3)
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// extended BIOS area allocated (usually at top of RAM)
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#define CBT_F1_EBDA (1<<2)
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// bus is Micro Channel instead of ISA
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#define CBT_F1_MCA (1<<1)
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// system has dual bus (Micro Channel + ISA)
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#define CBT_F1_MCAISA (1<<0)
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// INT 16/AH=09h (keyboard functionality) supported
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#define CBT_F2_INT1609 (1<<6)
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struct bios_config_table_s BIOS_CONFIG_TABLE __aligned(1) VAR16 = {
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.size = sizeof(BIOS_CONFIG_TABLE) - 2,
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.model = CONFIG_MODEL_ID,
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.submodel = CONFIG_SUBMODEL_ID,
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.biosrev = CONFIG_BIOS_REVISION,
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.feature1 = (
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CBT_F1_2NDPIC | CBT_F1_RTC | CBT_F1_EBDA
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| (CONFIG_KBD_CALL_INT15_4F ? CBT_F1_INT154F : 0)),
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.feature2 = CBT_F2_INT1609,
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.feature3 = 0,
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.feature4 = 0,
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.feature5 = 0,
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};
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