FDTBUS(4FREEBSD) - man page online | special files

FDTBUS(4)                          BSD Kernel Interfaces Manual                         FDTBUS(4)

NAME
     fdtbus — Flattened Device Tree bus driver

SYNOPSIS
     options FDT

DESCRIPTION
     The fdtbus abstract bus driver is the primary connection and translation layer between
     fdt(4) hardware resources description and FreeBSD native newbus device drivers framework.
     For an embedded system fdtbus represents peripherals typically found on a highly integrated
     chip (system-on-chip).

     The fdtbus driver provides generic, common infrastructure for all fdt(4) oriented device
     drivers, and its main responsibilities are the following:

     ·   Creating newbus children that reflect fdt(4) nodes in the flattened device tree.

     ·   Managing SYS_RES_IRQ resources.

     ·   Managing SYS_RES_MEMORY, SYS_RES_IOPORT resources.

SEE ALSO
     fdt(4), openfirm(4), simplebus(4)

STANDARDS
     IEEE Std 1275: IEEE Standard for Boot (Initialization Configuration) Firmware: Core Require‐
     ments and Practices (Open Firmware).

     Power.org Standard for Embedded Power Architecture Platform Requirements (ePAPR).

HISTORY
     The fdtbus support first appeared in FreeBSD 9.0.

AUTHORS
     The fdtbus support was developed by Semihalf under sponsorship from the FreeBSD Foundation.
     This manual page was written by Rafal Jaworowski.

BSD                                       July 12, 2010                                       BSD