1.\" 2.\" Copyright (c) 2010 The FreeBSD Foundation 3.\" 4.\" This software was developed by Semihalf under sponsorship from 5.\" the FreeBSD Foundation. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $FreeBSD$ 29.\" 30.Dd July 12, 2010 31.Dt FDTBUS 4 32.Os 33.Sh NAME 34.Nm fdtbus 35.Nd Flattened Device Tree bus driver 36.Sh SYNOPSIS 37.Cd "options FDT" 38.Sh DESCRIPTION 39The 40.Nm 41abstract bus driver is the primary connection and translation layer between 42.Xr fdt 4 43hardware resources description and 44.Fx 45native newbus device drivers framework. 46For an embedded system 47.Nm 48represents peripherals typically found on a highly integrated chip 49(system-on-chip). 50.Pp 51The 52.Nm 53driver provides generic, common infrastructure for all 54.Xr fdt 4 55oriented device drivers, and its main responsibilities are the 56following: 57.Bl -bullet 58.It 59Creating newbus children that reflect 60.Xr fdt 4 61nodes in the flattened device tree. 62.It 63Managing SYS_RES_IRQ resources. 64.It 65Managing SYS_RES_MEMORY, SYS_RES_IOPORT resources. 66.El 67.Sh SEE ALSO 68.Xr fdt 4 , 69.Xr openfirm 4 , 70.Xr simplebus 4 71.Sh STANDARDS 72IEEE Std 1275: IEEE Standard for Boot (Initialization Configuration) Firmware: 73Core Requirements and Practices 74.Pq Vt Open Firmware . 75.Pp 76Power.org Standard for Embedded Power Architecture Platform Requirements 77.Pq Vt ePAPR . 78.Sh HISTORY 79The 80.Nm 81support first appeared in 82.Fx 9.0 . 83.Sh AUTHORS 84The 85.Nm 86support was developed by Semihalf under sponsorship from the FreeBSD 87Foundation. 88This manual page was written by 89.An Rafal Jaworowski . 90