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.

Debian                                            July 12, 2010                                     SIMPLEBUS(4)