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/* $Id: bioslogo.h $ */
/** @file
* BiosLogo - The Private BIOS Logo Interface. (DEV)
*/
/*
* Copyright (C) 2006-2023 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_bioslogo_h
#define VBOX_INCLUDED_bioslogo_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#ifndef VBOX_PC_BIOS
# include <iprt/types.h>
# include <iprt/assert.h>
#endif
/** @defgroup grp_bios_logo The Private BIOS Logo Interface.
* @ingroup grp_devdrv
* @internal
*
* @remark All this is currently duplicated in logo.c.
*
* @{
*/
/** The extra port which is used to show the BIOS logo. */
#define LOGO_IO_PORT 0x3b8
/** The BIOS logo fade in/fade out steps. */
#define LOGO_SHOW_STEPS 16
/** @name The BIOS logo commands.
* @{
*/
#define LOGO_CMD_NOP 0
#define LOGO_CMD_SET_OFFSET 0x100
#define LOGO_CMD_SHOW_BMP 0x200
/** @} */
/**
* PC Bios logo data structure.
*/
typedef struct LOGOHDR
{
/** Signature (LOGO_HDR_MAGIC/0x66BB). */
uint16_t u16Signature;
/** Logo time (msec). */
uint16_t u16LogoMillies;
/** Fade in - boolean. */
uint8_t fu8FadeIn;
/** Fade out - boolean. */
uint8_t fu8FadeOut;
/** Show setup - boolean. */
uint8_t fu8ShowBootMenu;
/** Reserved / padding. */
uint8_t u8Reserved;
/** Logo file size. */
uint32_t cbLogo;
} LOGOHDR;
#ifndef VBOX_PC_BIOS
AssertCompileSize(LOGOHDR, 12);
#endif
/** Pointer to a PC BIOS logo header. */
typedef LOGOHDR *PLOGOHDR;
/** Pointer to a const PC BIOS logo header. */
typedef LOGOHDR const *PCLOGOHDR;
/** The value of the LOGOHDR::u16Signature field. */
#define LOGO_HDR_MAGIC 0x66BB
/** The value which will switch you the default logo. */
#define LOGO_DEFAULT_LOGO 0xFFFF
/** @} */
#endif /* !VBOX_INCLUDED_bioslogo_h */
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