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Command: simplebus | Section: 4 | Source: FreeBSD | File: simplebus.4.gz
SIMPLEBUS(4) FreeBSD Kernel Interfaces Manual SIMPLEBUS(4)
NAME
simplebus - ePAPR simple-bus driver
SYNOPSIS
options FDT
DESCRIPTION
This bus driver is dedicated for the simple-bus node of a flattened
device tree compliant with the ePAPR specification.
The simplebus entity does not represent any physical element by itself,
it is rather an umbrella node grouping integrated on-chip peripherals
like interrupt controller, connectivity controllers, accelerating engines
and so on.
The driver is generic and common for all flattened device tree nodes
claiming simple-bus compatibility. It iterates over direct descendants
of the simple-bus node, instantiates newbus children and assigns
resources to them, based on the configuration data retrieved from the
nodes properties in fdt(4).
Note the simplebus does not manage device resources and passes through
any requests to the fdtbus(4) layer.
SEE ALSO
fdt(4), fdtbus(4), openfirm(4)
STANDARDS
Power.org Standard for Embedded Power Architecture Platform Requirements
(ePAPR).
HISTORY
The simplebus support first appeared in FreeBSD 9.0.
AUTHORS
The simplebus support was developed by Semihalf under sponsorship from
the FreeBSD Foundation. This manual page was written by Rafal
Jaworowski.
FreeBSD 14.1-RELEASE-p8 July 12, 2010 FreeBSD 14.1-RELEASE-p8