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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