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.