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.Dd July 12, 2010 29.Dt FDTBUS 4 30.Os 31.Sh NAME 32.Nm fdtbus 33.Nd Flattened Device Tree bus driver 34.Sh SYNOPSIS 35.Cd "options FDT" 36.Sh DESCRIPTION 37The 38.Nm 39abstract bus driver is the primary connection and translation layer between 40.Xr fdt 4 41hardware resources description and 42.Fx 43native newbus device drivers framework. 44For an embedded system 45.Nm 46represents peripherals typically found on a highly integrated chip 47(system-on-chip). 48.Pp 49The 50.Nm 51driver provides generic, common infrastructure for all 52.Xr fdt 4 53oriented device drivers, and its main responsibilities are the 54following: 55.Bl -bullet 56.It 57Creating newbus children that reflect 58.Xr fdt 4 59nodes in the flattened device tree. 60.It 61Managing SYS_RES_IRQ resources. 62.It 63Managing SYS_RES_MEMORY, SYS_RES_IOPORT resources. 64.El 65.Sh SEE ALSO 66.Xr fdt 4 , 67.Xr openfirm 4 , 68.Xr simplebus 4 69.Sh STANDARDS 70IEEE Std 1275: IEEE Standard for Boot (Initialization Configuration) Firmware: 71Core Requirements and Practices 72.Pq Vt Open Firmware . 73.Pp 74Power.org Standard for Embedded Power Architecture Platform Requirements 75.Pq Vt ePAPR . 76.Sh HISTORY 77The 78.Nm 79support first appeared in 80.Fx 9.0 . 81.Sh AUTHORS 82The 83.Nm 84support was developed by Semihalf under sponsorship from the FreeBSD 85Foundation. 86This manual page was written by 87.An Rafal Jaworowski . 88