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/** @file
* X86 (and AMD64) Local APIC registers (VMM,++).
*
* bios.mac is generated from this file by running 'kmk -f Maintenance.kmk incs'.
*/
/*
* Copyright (C) 2017-2024 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_bios_h
#define VBOX_INCLUDED_bios_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
/** The BIOS control port.
* Write "Shutdown" byte by byte to shutdown the VM.
* Write "Bootfail" to indicate no bootable device.
* Write "Prochalt" to execute alternative CPU halt.
* @sa VBOX_BIOS_OLD_SHUTDOWN_PORT */
#define VBOX_BIOS_SHUTDOWN_PORT 0x040f
/** Write this value to shut down VM. */
#define VBOX_BIOS_CTL_SHUTDOWN 0x8001
/** Write this value to report boot failure. */
#define VBOX_BIOS_CTL_BOOTFAIL 0x8002
/** Write this value to halt CPU. */
#define VBOX_BIOS_CTL_PROCHALT 0x8003
/** The old shutdown port number.
* Older versions of VirtualBox uses this as does Bochs.
* @sa VBOX_BIOS_CONTROL_PORT */
#define VBOX_BIOS_OLD_SHUTDOWN_PORT 0x8900
#endif /* !VBOX_INCLUDED_bios_h */
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