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93 lines
2.9 KiB
Groff
93 lines
2.9 KiB
Groff
.\" $OpenBSD: acpidump.8,v 1.19 2020/11/22 17:10:06 jmc Exp $
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.\"
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.\" Copyright (c) 1999 Doug Rabson <dfr@FreeBSD.org>
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.\" Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
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.\" Copyright (c) 2000 Yasuo YOKOYAMA <yokoyama@jp.FreeBSD.org>
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.\" Copyright (c) 2000 Hiroki Sato <hrs@FreeBSD.org>
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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 REGENTS 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 REGENTS 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: src/usr.sbin/acpi/acpidump/acpidump.8,v 1.9 2001/09/05 19:21:25 dd Exp $
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.\"
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.Dd $Mdocdate: November 22 2020 $
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.Dt ACPIDUMP 8
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.Os
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.Sh NAME
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.Nm acpidump
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.Nd dump ACPI tables
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.Sh SYNOPSIS
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.Nm
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.Fl o Ar prefix
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.Sh DESCRIPTION
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The
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.Nm
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command stores ACPI tables from physical memory into files specified by
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.Ar prefix .
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If
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.Ar prefix
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specifies a directory, the generated files will be of the form
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<prefix>/<sig>.<id>.
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Otherwise, they will be named <prefix>.<sig>.<id>.
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.Dq sig
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is the signature of the ACPI Table;
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.Dq id
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is unique for each table.
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.Pp
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Additionally a file called <prefix>/headers or <prefix>.headers will
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be created that contains additional human readable information
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pertaining to this specific dump.
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.Pp
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The ACPICA disassembler is available through the
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.Ox
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ports tree or package system:
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.Bd -literal -offset indent
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# pkg_add acpica
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$ iasl -d <prefix>.<sig>.<id>
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.Ed
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.Pp
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.Nm
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requires the ability to open
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.Pa /dev/kmem ,
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which may be restricted based upon the value of the
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.Ar kern.allowkmem
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.Xr sysctl 8 .
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.Pp
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.Nm
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is run at startup and stores the results in
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.Pa /var/db/acpi .
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.Sh FILES
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.Bl -tag -width /dev/mem
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.It Pa /dev/mem
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.It Pa /var/db/acpi
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.El
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.Sh SEE ALSO
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.Xr pkg_add 1 ,
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.Xr mem 4 ,
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.Xr packages 7 ,
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.Xr ports 7
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Ox 3.8 .
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