108 lines
3 KiB
C
108 lines
3 KiB
C
/* $Id: bioslogo.h $ */
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/** @file
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* BiosLogo - The Private BIOS Logo Interface. (DEV)
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*/
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/*
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* Copyright (C) 2006-2023 Oracle and/or its affiliates.
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*
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* This file is part of VirtualBox base platform packages, as
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* available from https://www.virtualbox.org.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, in version 3 of the
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* License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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
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* along with this program; if not, see <https://www.gnu.org/licenses>.
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*
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* The contents of this file may alternatively be used under the terms
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* of the Common Development and Distribution License Version 1.0
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* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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* in the VirtualBox distribution, in which case the provisions of the
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* CDDL are applicable instead of those of the GPL.
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*
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* You may elect to license modified versions of this file under the
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* terms and conditions of either the GPL or the CDDL or both.
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*
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* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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*/
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#ifndef VBOX_INCLUDED_bioslogo_h
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#define VBOX_INCLUDED_bioslogo_h
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#ifndef RT_WITHOUT_PRAGMA_ONCE
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# pragma once
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#endif
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#ifndef VBOX_PC_BIOS
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# include <iprt/types.h>
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# include <iprt/assert.h>
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#endif
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/** @defgroup grp_bios_logo The Private BIOS Logo Interface.
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* @ingroup grp_devdrv
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* @internal
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*
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* @remark All this is currently duplicated in logo.c.
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*
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* @{
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*/
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/** The extra port which is used to show the BIOS logo. */
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#define LOGO_IO_PORT 0x3b8
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/** The BIOS logo fade in/fade out steps. */
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#define LOGO_SHOW_STEPS 16
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/** @name The BIOS logo commands.
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* @{
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*/
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#define LOGO_CMD_NOP 0
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#define LOGO_CMD_SET_OFFSET 0x100
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#define LOGO_CMD_SHOW_BMP 0x200
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/** @} */
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/**
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* PC Bios logo data structure.
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*/
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typedef struct LOGOHDR
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{
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/** Signature (LOGO_HDR_MAGIC/0x66BB). */
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uint16_t u16Signature;
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/** Logo time (msec). */
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uint16_t u16LogoMillies;
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/** Fade in - boolean. */
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uint8_t fu8FadeIn;
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/** Fade out - boolean. */
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uint8_t fu8FadeOut;
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/** Show setup - boolean. */
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uint8_t fu8ShowBootMenu;
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/** Reserved / padding. */
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uint8_t u8Reserved;
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/** Logo file size. */
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uint32_t cbLogo;
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} LOGOHDR;
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#ifndef VBOX_PC_BIOS
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AssertCompileSize(LOGOHDR, 12);
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#endif
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/** Pointer to a PC BIOS logo header. */
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typedef LOGOHDR *PLOGOHDR;
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/** Pointer to a const PC BIOS logo header. */
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typedef LOGOHDR const *PCLOGOHDR;
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/** The value of the LOGOHDR::u16Signature field. */
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#define LOGO_HDR_MAGIC 0x66BB
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/** The value which will switch you the default logo. */
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#define LOGO_DEFAULT_LOGO 0xFFFF
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/** @} */
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#endif /* !VBOX_INCLUDED_bioslogo_h */
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