Given the correct device tree, the same compiled kernel can support different hardware configurations within a wider architecture family. Nodes contain properties and child nodes, while properties are name–value pairs.ĭevice trees have both a binary format for operating systems to use and a textual format for convenient editing and management. The Devicetree specification is currently managed by a community named, which is associated with, among others, Linaro and Arm.Ī device tree can hold any kind of data as internally it is a tree of named nodes and properties. On systems with a boot loader that does not support device trees, a static device tree may be installed along with the operating system the Linux kernel supports this approach. As an example, Das U-Boot and kexec can pass a device tree when launching a new operating system. Systems which use device trees usually pass a static device tree (perhaps stored in EEPROM, or stored in NAND device like eUFS) to the operating system, but can also generate a device tree in the early stages of booting. Personal computers with the x86 architecture generally do not use device trees, relying instead on various auto configuration protocols (e.g. ![]() Is targeted at smaller systems, but is still used with some server-class systems (for instance, those described by the Power Architecture Platform Reference). The device tree was derived from SPARC-based computers via the Open Firmware project. ![]() In computing, a devicetree (also written device tree) is a data structure describing the hardware components of a particular computer so that the operating system's kernel can use and manage those components, including the CPU or CPUs, the memory, the buses and the integrated peripherals. ![]() Not to be confused with Device file system.
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