.\" .\" Copyright (c) 1999 .\" Kazutaka YOKOTA .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer as .\" the first lines of this file unmodified. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" .\" $Id: splash.4,v 1.1 1999/02/07 05:40:14 yokota Exp $ .\" .Dd February 9, 1999 .Dt SPLASH 4 i386 .Os FreeBSD .Sh NAME .Nm splash .Nd splash screen / screen saver interface .Sh SYNOPSIS .Cd "pseudo-device splash" .Sh DESCRIPTION The .Nm pseudo device driver adds support for the splash screen and screen savers to the kernel. This driver is required if the splash bitmap image is to be loaded or any screen saver is to be used. .Sh SPLASH SCREEN You can load and display an arbitrary bitmap image file as welcome banner on the screen when the system is about to start. This image will remain on the screen during kernel initialization process until the ``Login'' prompt appears on the screen or until a screen saver is loaded and initialized. The image will also disappear if you hit any key, although this may not work immediately if the kernel is still probing devices. .Pp If you specify .Fl c or .Fl v boot option when loading kernel, the splash image will not appear. However, it is still loaded and can be used as a screen saver later: see below. .Pp In order to display the bitmap, the bitmap file itself and the matching splash image decoder module must be loaded by the boot loader. Currently the following decoder module is available: .Pp .Bl -tag -width splash_decoder -compact .It Pa splash_bmp.ko W*ndows BMP file decoder. While the BMP file format allows images of various color depths, this decoder currently only handles 256 color bitmaps. Bitmaps of other color depths will not be displayed. .El .Pp The .Sx EXAMPLES section illustrates how to set up the splash screen. .Pp If the standard VGA video mode is used, the size of the bitmap must be 320x200 or less. If you enable the VESA mode support in the kernel, either by statically linking the VESA module or by loading the VESA module .Pq see Xr vga 4 , you can load bitmaps up to a resolution of 1024x768, depending on the VESA BIOS and the amount of video memory on the video card. .Sh SCREEN SAVER The screen saver will activate when the system is considered idle: i.e. when the user has not typed a key or moved the mouse for a specified period of time. As the screen saver is an optional module, it must be explicitly loaded into memory. Currently the following screen saver modules are available: .Pp .Bl -tag -width splash_module.ko -compact .It Pa blank_saver.ko This screen saver simply blanks the screen. .It Pa daemon_saver.ko Animated BSD Daemon screen saver. .It Pa fade_saver.ko The screen will gradually fade away. .It Pa green_saver.ko If the monitor supports power saving mode, it will be turned off. .It Pa logo_saver.ko Animated graphical BSD Daemon. .It Pa rain_saver.ko Draws shower on the screen. .It Pa snake_saver.ko Draws a snake of string. .It Pa star_saver.ko Twinkling stars. .It Pa warp_saver.ko Streaking stars. .El .Pp Screen saver modules can be loaded using .Xr kldload 1 : .Pp .Dl kldload logo_saver .Pp The timeout value in seconds can be specified as follows: .Pp .Dl vidcontrol -t N .Pp Alternatively, you can set the .Ar saver variable in the .Pa /etc/rc.conf to the screen saver of your choice and the timeout value to the .Ar blanktime variable so that the screen saver is automatically loaded and the timeout value is set when the system starts. .Pp The screen saver may be instantly activated by hitting the .Ar saver key: the defaults are .Em Shift-Pause on the AT enhanced keyboard and .Em Shift-Ctrl-NumLock/Pause on the AT 84 keyboard. You can change the .Ar saver key by modifying the keymap .Pq see Xr kbdcontrol 1 , Xr keymap 5 , and assign the .Ar saver function to a key of your preference. .Pp The screen saver will not run if the screen is not in text mode. .Sh SPLASH SCREEN AS A SCREEN SAVER If you load a splash image but do not load a screen saver, you can continue using the splash module as a screen saver. The screen blanking interval can be specified as described in the .Sx SCREEN SAVER section above. .\".Sh DRIVER CONFIGURATION .Sh FILES .Bl -tag -width /modules/splash_xxxx.ko -compact .It /boot/loader.rc boot loader script .It /etc/rc.conf system configuration information .It /modules/splash_*.ko splash image decoder modules .It /modules/*_saver.ko screen saver modules .It /modules/vesa.ko the VESA support module .El .Sh EXAMPLE In order to load the splash screen or the screen saver, you must have the following line in the kernel configuration file. .Pp .Dl pseudo-device splash .Pp The following examples show how to load the splash screen image from the boot loader prompt. They may be typed by hand at the loader prompt or may be written in the boot loader script .Pa /boot/loader.rc .Pq see Xr loader.rc 5 . .Bd -literal -offset indent load kernel load -t splash_image_data chuck.bmp load splash_bmp .Ed .Pp The second line loads a bitmap image file to be used in the splash screen. In the above example, the file .Pa chuck.bmp is loaded. It is extremely important to include the option .Fl t Ar splash_image_data in this line, as the splash image decoder module will search for this tag name when looking up the preloaded bitmap data. The third line loads the splash image decoder module .Pa splash_bmp . .Pp In the following example, the VESA module is loaded so that a bitmap file which cannot be displayed in standard VGA modes may be shown using one of the VESA video modes. .Bd -literal -offset indent load kernel load vesa load -t splash_image_data chuck.bmp load splash_bmp .Ed .Pp If the VESA support is statically linked to the kernel, it is not necessary to load the VESA module. Just load the bitmap file and the splash decoder module as in the first example above. .\".Sh DIAGNOSTICS .Sh CAVEATS Both the splash screen and the screen saver work with .Xr syscons 4 only. They are not available for the alternative console driver .Xr pcvt 4 . .Sh BUGS If you load a screen saver while another screen saver has already been loaded, the first screen saver will not be automatically unloaded and will remain in memory, wasting kernel memory space. .Sh SEE ALSO .Xr vidcontrol 1 , .Xr syscons 4 , .Xr vga 4 , .Xr rc.conf 5 , .Xr kldload 8 , .Xr kldunload 8 . .Sh HISTORY The .Nm driver first appeared in .Fx 3.1 . .Sh AUTHORS The .Nm driver and this manual page were written by .An Kazutaka Yokota Aq yokota@FreeBSD.org . The .Pa splash_bmp module was written by .An Michael Smith Aq msmith@FreeBSD.org and .An Kazutaka Yokota .