1.\" $NetBSD: qemufwcfg.4,v 1.6 2020/04/01 15:42:15 gson Exp $ 2.\" 3.\" Copyright (c) 2017 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd April 1, 2020 28.Dt QEMUFWCFG 4 29.Os 30.Sh NAME 31.Nm qemufwcfg 32.Nd QEMU Firmware Configuration device driver 33.Sh SYNOPSIS 34.Cd "qemufwcfg* at acpi?" 35.Cd "qemufwcfg* at fdt?" 36.Sh DESCRIPTION 37The 38.Nm 39interface allows QEMU to provide data items and files to guest 40operating systems. 41.Pp 42See the 43.Fl fw_cfg 44option in the 45.Nm qemu 46man page. 47.Sh FILES 48.Bl -tag -width 20n 49.It Pa /dev/qemufwcfg<n> 50device path 51.El 52.Sh SEE ALSO 53.Xr mount_qemufwcfg 8 54.Rs 55.%T QEMU Firmware Configuration (fw_cfg) Device 56.%U https://raw.githubusercontent.com/qemu/qemu/master/docs/specs/fw_cfg.txt 57.Re 58.Sh HISTORY 59The 60.Nm 61driver first appeared in 62.Nx 9.0 . 63