1 | /** @file
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2 | * X86 (and AMD64) Local APIC registers (VMM,++).
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3 | *
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4 | * bios.mac is generated from this file by running 'kmk -f Maintenance.kmk incs'.
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5 | */
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6 |
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7 | /*
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8 | * Copyright (C) 2017-2023 Oracle and/or its affiliates.
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9 | *
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10 | * This file is part of VirtualBox base platform packages, as
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11 | * available from https://www.virtualbox.org.
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12 | *
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13 | * This program is free software; you can redistribute it and/or
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14 | * modify it under the terms of the GNU General Public License
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15 | * as published by the Free Software Foundation, in version 3 of the
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16 | * License.
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17 | *
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18 | * This program is distributed in the hope that it will be useful, but
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19 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 | * General Public License for more details.
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22 | *
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23 | * You should have received a copy of the GNU General Public License
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24 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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25 | *
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26 | * The contents of this file may alternatively be used under the terms
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27 | * of the Common Development and Distribution License Version 1.0
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28 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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29 | * in the VirtualBox distribution, in which case the provisions of the
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30 | * CDDL are applicable instead of those of the GPL.
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31 | *
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32 | * You may elect to license modified versions of this file under the
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33 | * terms and conditions of either the GPL or the CDDL or both.
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34 | *
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35 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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36 | */
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37 |
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38 | #ifndef VBOX_INCLUDED_bios_h
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39 | #define VBOX_INCLUDED_bios_h
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40 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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41 | # pragma once
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42 | #endif
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43 |
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44 | /** The BIOS control port.
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45 | * Write "Shutdown" byte by byte to shutdown the VM.
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46 | * Write "Bootfail" to indicate no bootable device.
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47 | * Write "Prochalt" to execute alternative CPU halt.
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48 | * @sa VBOX_BIOS_OLD_SHUTDOWN_PORT */
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49 | #define VBOX_BIOS_SHUTDOWN_PORT 0x040f
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50 |
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51 | /** Write this value to shut down VM. */
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52 | #define VBOX_BIOS_CTL_SHUTDOWN 0x8001
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53 | /** Write this value to report boot failure. */
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54 | #define VBOX_BIOS_CTL_BOOTFAIL 0x8002
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55 | /** Write this value to halt CPU. */
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56 | #define VBOX_BIOS_CTL_PROCHALT 0x8003
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57 |
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58 | /** The old shutdown port number.
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59 | * Older versions of VirtualBox uses this as does Bochs.
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60 | * @sa VBOX_BIOS_CONTROL_PORT */
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61 | #define VBOX_BIOS_OLD_SHUTDOWN_PORT 0x8900
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62 |
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63 |
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64 | #endif /* !VBOX_INCLUDED_bios_h */
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65 |
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