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DTB
A binary file describing a machine's hardware, handed to the kernel at boot.
DTB stands for Device Tree Blob: a compiled hardware description that tells an operating system kernel what devices exist and where, on platforms where the hardware can't be auto-discovered. The kernel reads it early in boot to configure itself. It is the same artifact as the fuller 'Device Tree Blob' entry.
See also
- Device Tree Blob (DTB)A compact file that tells the operating system what hardware is present, since the CPU can't just discover it.
- EL0 / EL1ARM's privilege tiers: EL0 is ordinary app code, EL1 is the operating-system kernel.
- ELFThe standard file format for executable programs and libraries on Linux and similar systems.
- execveThe specific system call that loads a new program and starts running it in place of the current one.