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82 lines
2.7 KiB
Groff
82 lines
2.7 KiB
Groff
.\"
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.\" Copyright (c) 2010 The FreeBSD Foundation
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.\" All rights reserved.
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.\"
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.\" This software was developed by Semihalf under sponsorship from
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.\" the FreeBSD Foundation.
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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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.\"
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.Dd July 12, 2010
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.Dt SIMPLEBUS 4
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.Os
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.Sh NAME
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.Nm simplebus
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.Nd ePAPR simple-bus driver
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.Sh SYNOPSIS
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.Cd "options FDT"
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.Sh DESCRIPTION
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This bus driver is dedicated for the
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.Pa simple-bus
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node of a flattened device tree compliant with the
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.Pa ePAPR
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specification.
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.Pp
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The
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.Nm
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entity does not represent any physical element by itself, it is rather an
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umbrella node grouping integrated on-chip peripherals like interrupt
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controller, connectivity controllers, accelerating engines and so on.
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.Pp
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The driver is generic and common for all flattened device tree nodes claiming
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.Pa simple-bus
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compatibility. It iterates over direct descendants of the
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.Pa simple-bus
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node, instantiates newbus children and assigns resources to them, based on the
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configuration data retrieved from the nodes properties in
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.Xr fdt 4 .
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.Pp
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Note the
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.Nm
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does not manage device resources and passes through any requests to the
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.Xr fdtbus 4 layer.
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.Sh SEE ALSO
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.Xr fdt 4 ,
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.Xr fdtbus 4 ,
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.Xr openfirm 4 ,
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.Sh STANDARDS
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Power.org Standard for Embedded Power Architecture Platform Requirements
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.Pq Vt ePAPR .
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.Sh HISTORY
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The
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.Nm
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support first appeared in
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.Fx 9.0 .
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.Sh AUTHORS
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The
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.Nm
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support was developed by Semihalf under sponsorship from the FreeBSD
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Foundation. This manual page was written by
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.An Rafal Jaworowski .
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