VirtualBox

source: vbox/trunk/include/VBox/bioslogo.h@ 77548

Last change on this file since 77548 was 76585, checked in by vboxsync, 6 years ago

*: scm --fix-header-guard-endif

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 2.7 KB
Line 
1/* $Id: bioslogo.h 76585 2019-01-01 06:31:29Z vboxsync $ */
2/** @file
3 * BiosLogo - The Private BIOS Logo Interface. (DEV)
4 */
5
6/*
7 * Copyright (C) 2006-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27#ifndef VBOX_INCLUDED_bioslogo_h
28#define VBOX_INCLUDED_bioslogo_h
29#ifndef RT_WITHOUT_PRAGMA_ONCE
30# pragma once
31#endif
32
33#ifndef VBOX_PC_BIOS
34# include <iprt/types.h>
35# include <iprt/assert.h>
36#endif
37
38/** @defgroup grp_bios_logo The Private BIOS Logo Interface.
39 * @ingroup grp_devdrv
40 * @internal
41 *
42 * @remark All this is currently duplicated in logo.c.
43 *
44 * @{
45 */
46
47/** The extra port which is used to show the BIOS logo. */
48#define LOGO_IO_PORT 0x3b8
49
50/** The BIOS logo fade in/fade out steps. */
51#define LOGO_SHOW_STEPS 16
52
53/** @name The BIOS logo commands.
54 * @{
55 */
56#define LOGO_CMD_NOP 0
57#define LOGO_CMD_SET_OFFSET 0x100
58#define LOGO_CMD_SHOW_BMP 0x200
59/** @} */
60
61/**
62 * PC Bios logo data structure.
63 */
64typedef struct LOGOHDR
65{
66 /** Signature (LOGO_HDR_MAGIC/0x66BB). */
67 uint16_t u16Signature;
68 /** Logo time (msec). */
69 uint16_t u16LogoMillies;
70 /** Fade in - boolean. */
71 uint8_t fu8FadeIn;
72 /** Fade out - boolean. */
73 uint8_t fu8FadeOut;
74 /** Show setup - boolean. */
75 uint8_t fu8ShowBootMenu;
76 /** Reserved / padding. */
77 uint8_t u8Reserved;
78 /** Logo file size. */
79 uint32_t cbLogo;
80} LOGOHDR;
81#ifndef VBOX_PC_BIOS
82AssertCompileSize(LOGOHDR, 12);
83#endif
84/** Pointer to a PC BIOS logo header. */
85typedef LOGOHDR *PLOGOHDR;
86/** Pointer to a const PC BIOS logo header. */
87typedef LOGOHDR const *PCLOGOHDR;
88
89/** The value of the LOGOHDR::u16Signature field. */
90#define LOGO_HDR_MAGIC 0x66BB
91
92/** The value which will switch you the default logo. */
93#define LOGO_DEFAULT_LOGO 0xFFFF
94
95/** @} */
96
97#endif /* !VBOX_INCLUDED_bioslogo_h */
98
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