| 1 | /* $Id: bioslogo.h 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * BiosLogo - The Private BIOS Logo Interface. (DEV)
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 | #ifndef VBOX_INCLUDED_bioslogo_h
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| 38 | #define VBOX_INCLUDED_bioslogo_h
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| 39 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 40 | # pragma once
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| 41 | #endif
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| 42 |
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| 43 | #ifndef VBOX_PC_BIOS
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| 44 | # include <iprt/types.h>
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| 45 | # include <iprt/assert.h>
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| 46 | #endif
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| 47 |
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| 48 | /** @defgroup grp_bios_logo The Private BIOS Logo Interface.
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| 49 | * @ingroup grp_devdrv
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| 50 | * @internal
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| 51 | *
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| 52 | * @remark All this is currently duplicated in logo.c.
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| 53 | *
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| 54 | * @{
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| 55 | */
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| 56 |
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| 57 | /** The extra port which is used to show the BIOS logo. */
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| 58 | #define LOGO_IO_PORT 0x3b8
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| 59 |
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| 60 | /** The BIOS logo fade in/fade out steps. */
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| 61 | #define LOGO_SHOW_STEPS 16
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| 62 |
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| 63 | /** @name The BIOS logo commands.
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| 64 | * @{
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| 65 | */
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| 66 | #define LOGO_CMD_NOP 0
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| 67 | #define LOGO_CMD_SET_OFFSET 0x100
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| 68 | #define LOGO_CMD_SHOW_BMP 0x200
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| 69 | /** @} */
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| 70 |
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| 71 | /**
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| 72 | * PC Bios logo data structure.
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| 73 | */
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| 74 | typedef struct LOGOHDR
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| 75 | {
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| 76 | /** Signature (LOGO_HDR_MAGIC/0x66BB). */
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| 77 | uint16_t u16Signature;
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| 78 | /** Logo time (msec). */
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| 79 | uint16_t u16LogoMillies;
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| 80 | /** Fade in - boolean. */
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| 81 | uint8_t fu8FadeIn;
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| 82 | /** Fade out - boolean. */
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| 83 | uint8_t fu8FadeOut;
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| 84 | /** Show setup - boolean. */
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| 85 | uint8_t fu8ShowBootMenu;
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| 86 | /** Reserved / padding. */
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| 87 | uint8_t u8Reserved;
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| 88 | /** Logo file size. */
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| 89 | uint32_t cbLogo;
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| 90 | } LOGOHDR;
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| 91 | #ifndef VBOX_PC_BIOS
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| 92 | AssertCompileSize(LOGOHDR, 12);
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| 93 | #endif
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| 94 | /** Pointer to a PC BIOS logo header. */
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| 95 | typedef LOGOHDR *PLOGOHDR;
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| 96 | /** Pointer to a const PC BIOS logo header. */
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| 97 | typedef LOGOHDR const *PCLOGOHDR;
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| 98 |
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| 99 | /** The value of the LOGOHDR::u16Signature field. */
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| 100 | #define LOGO_HDR_MAGIC 0x66BB
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| 101 |
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| 102 | /** The value which will switch you the default logo. */
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| 103 | #define LOGO_DEFAULT_LOGO 0xFFFF
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| 104 |
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| 105 | /** @} */
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| 106 |
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| 107 | #endif /* !VBOX_INCLUDED_bioslogo_h */
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| 108 |
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