fdtbus (4)

Leading comments

Copyright (c) 2010 The FreeBSD Foundation
All rights reserved.

This software was developed by Semihalf under sponsorship from
the FreeBSD Foundation.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
  ...

(The comments found at the beginning of the groff file "man4/fdtbus.4freebsd".)

NAME

fdtbus - Flattened Device Tree bus driver

SYNOPSIS

options FDT

DESCRIPTION

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

The ifconfig 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 Requirements and Practices (Vt Open Firmware )

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

HISTORY

The ifconfig support first appeared in Fx 9.0 .

AUTHORS

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