ea1ed0c224
kernel selection menu to the beastie menu. List of kernels is taken from `kernels' in loader.conf(5) as a space (or comma) separated list of names to display (up to 9). If not set, default value is "kernel kernel.old". Does not validate that kernels exist because the next enhancement will be to allow selection of the root device. Discussed on: -current MFC after: 3 days
291 lines
8.1 KiB
Groff
291 lines
8.1 KiB
Groff
.\" Copyright (c) 1999 Daniel C. Sobral
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.Dd October 18, 2013
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.Dt LOADER.CONF 5
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.Os
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.Sh NAME
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.Nm loader.conf
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.Nd "system bootstrap configuration information"
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.Sh DESCRIPTION
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The file
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.Nm
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contains descriptive information on bootstrapping the system.
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Through
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it you can specify the kernel to be booted, parameters to be passed to
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it, and additional modules to be loaded; and generally set all variables
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described in
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.Xr loader 8 .
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.Pp
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The file
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.Pa /boot/loader.rc
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must contain the following two lines for
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.Nm
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to be automatically processed:
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.Pp
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.Dl include /boot/loader.4th
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.Dl start
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.Pp
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If no
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.Pa /boot/loader.rc
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exists at installworld time, one with the above lines will be installed.
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.Sh SYNTAX
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Though
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.Nm Ns 's
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format was defined explicitly to resemble
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.Xr rc.conf 5 ,
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and can be sourced by
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.Xr sh 1 ,
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some settings are treated in a special fashion.
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Also, the
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behavior of some settings is defined by the setting's suffix;
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the prefix identifies which module the setting controls.
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.Pp
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The general parsing rules are:
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.Bl -bullet
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.It
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Spaces and empty lines are ignored.
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.It
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A # sign will mark the remainder of the line as a comment.
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.It
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Only one setting can be present on each line.
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.El
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.Pp
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All settings have the following format:
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.Pp
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.Dl variable="value"
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.Pp
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Unless it belongs to one of the classes of settings that receive special
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treatment, a setting will set the value of a
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.Xr loader 8
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environment variable.
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The settings that receive special
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treatment are listed below.
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Settings beginning with
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.Qq *
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below define the modules to be loaded and
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may have any prefix; the prefix identifies a module.
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All such settings sharing a common
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prefix refer to the same module.
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.Bl -tag -width Ar
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.It Ar exec
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Immediately executes a
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.Xr loader 8
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command.
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This type of setting cannot be processed by programs other
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than
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.Xr loader 8 ,
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so its use should be avoided.
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Multiple instances of it will be processed
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independently.
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.It Ar loader_conf_files
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Defines additional configuration files to be processed right after the
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present file.
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.It Ar kernel
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Name of the kernel to be loaded.
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If no kernel name is set, no additional
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modules will be loaded.
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The name must be a subdirectory of
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.Pa /boot
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that contains a kernel.
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.It Ar kernel_options
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Flags to be passed to the kernel.
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.It Ar password
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Protect boot menu with a password without interrupting
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.Ic autoboot
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process.
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The password should be in clear text format.
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If a password is set, boot menu will not appear until any key is pressed during
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countdown period specified by
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.Va autoboot_delay
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variable or
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.Ic autoboot
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process fails.
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In both cases user should provide specified password to be able to access boot
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menu.
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.It Ar bootlock_password
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Provides a password to be required by check-password before execution is
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allowed to continue.
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The password should be in clear text format.
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If a password is set, the user must provide specified password to boot.
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.It Ar verbose_loading
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If set to
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.Dq YES ,
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module names will be displayed as they are loaded.
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.It Ar *_load
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If set to
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.Dq YES ,
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that module will be loaded.
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If no name is defined (see below), the
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module's name is taken to be the same as the prefix.
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.It Ar *_name
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Defines the name of the module.
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.It Ar *_type
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Defines the module's type.
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If none is given, it defaults to a kld module.
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.It Ar *_flags
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Flags and parameters to be passed to the module.
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.It Ar *_before
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Commands to be executed before the module is loaded.
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Use of this setting
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should be avoided.
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.It Ar *_after
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Commands to be executed after the module is loaded.
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Use of this setting
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should be avoided.
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.It Ar *_error
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Commands to be executed if the loading of a module fails.
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Except for the
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special value
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.Dq abort ,
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which aborts the bootstrap process, use of this setting should be avoided.
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.El
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.Pp
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.Em WARNING:
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developers should never use these suffixes for any kernel environment
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variables (tunables) or conflicts will result.
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.Sh DEFAULT SETTINGS
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Most of
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.Nm Ns 's
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default settings can be ignored.
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The few of them which are important
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or useful are:
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.Bl -tag -width bootfile -offset indent
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.It Va bitmap_load
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.Pq Dq NO
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If set to
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.Dq YES ,
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a bitmap will be loaded to be displayed on screen while booting.
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.It Va bitmap_name
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.Pq Dq Pa /boot/splash.bmp
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Name of the bitmap to be loaded.
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Any other name can be used.
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.It Va comconsole_speed
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.Dq ( 9600
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or the value of the
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.Va BOOT_COMCONSOLE_SPEED
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variable when
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.Xr loader 8
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was compiled).
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Sets the speed of the serial console.
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If the previous boot loader stage specified that a serial console
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is in use then the default speed is determined from the current
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serial port speed setting.
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.It Va console
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.Pq Dq vidconsole
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.Dq comconsole
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selects serial console,
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.Dq vidconsole
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selects the video console,
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.Dq nullconsole
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selects a mute console
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(useful for systems with neither a video console nor a serial port), and
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.Dq spinconsole
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selects the video console which prevents any input and hides all output
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replacing it with
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.Dq spinning
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character (useful for embedded products and such).
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.It Va kernel
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.Pq Dq kernel
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.It Va kernels
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.Pq Dq kernel kernel.old
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Space or comma separated list of kernels to present in the boot menu.
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.It Va loader_conf_files
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.Pq Dq Pa /boot/loader.conf /boot/loader.conf.local
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.It Va splash_bmp_load
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.Pq Dq NO
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If set to
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.Dq YES ,
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will load the splash screen module, making it possible to display a bmp image
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on the screen while booting.
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.It Va splash_pcx_load
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.Pq Dq NO
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If set to
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.Dq YES ,
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will load the splash screen module, making it possible to display a pcx image
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on the screen while booting.
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.It Va vesa_load
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.Pq Dq NO
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If set to
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.Dq YES ,
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the vesa module will be loaded, enabling bitmaps above VGA resolution to
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be displayed.
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.It Va beastie_disable
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If set to
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.Dq YES ,
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the beastie boot menu will be skipped.
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.It Va loader_logo Pq Dq Li orbbw
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Selects a desired logo in the beastie boot menu.
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Possible values are:
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.Dq Li orbbw ,
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.Dq Li orb ,
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.Dq Li fbsdbw ,
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.Dq Li beastiebw ,
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.Dq Li beastie ,
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and
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.Dq Li none .
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.It Va loader_color
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If set to
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.Dq NO ,
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the beastie boot menu will be displayed without ANSI coloring.
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.El
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.Sh FILES
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.Bl -tag -width /boot/defaults/loader.conf -compact
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.It Pa /boot/defaults/loader.conf
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default settings -- do not change this file.
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.It Pa /boot/loader.4th
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defines the commands used by loader to read and process
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.Nm .
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.It Pa /boot/loader.conf
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user defined settings.
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.It Pa /boot/loader.conf.local
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machine-specific settings for sites with a common loader.conf.
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.It Pa /boot/loader.rc
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contains the instructions to automatically process
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.Nm .
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.El
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.Sh SEE ALSO
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.Xr boot 8 ,
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.Xr loader 8 ,
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.Xr loader.4th 8
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.Sh HISTORY
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The file
|
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.Nm
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|
first appeared in
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.Fx 3.2 .
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.Sh AUTHORS
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This manual page was written by
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.An Daniel C. Sobral Aq dcs@FreeBSD.org .
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.Sh BUGS
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The
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.Xr loader 8
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stops reading
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.Nm
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when it encounters a syntax error, so any options which are vital for
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booting a particular system (i.e.\&
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.Dq Va hw.ata.ata_dma Ns "=0" )
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should precede any experimental additions to
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.Nm .
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