FDTBUS(4) 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 new- bus device drivers framework. For an embedded system fdtbus represents pe- ripherals 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 de- vice 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 (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. FreeBSD 15.1 July 12, 2010 FDTBUS(4)
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