path: root/common/machine_id.c
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* common: machine_id: introduce machine id generationBastian Krause2019-09-301-0/+69
This patch adds functionality to pass device-specific information that will be hashed to generate a persistent unique machine id. It is then available as global.machine_id. It can be overwritten with nv.machine_id if necessary. Passing the machine id to the kernel is done in a separate patch. Note: if multiple sources provide hashable device-specific information (via machine_id_set_hashable()) the information provided by the last call prior to the late initcall set_machine_id() is used to generate the machine id from. Thus when updating barebox the machine id might change. Signed-off-by: Bastian Krause <> Signed-off-by: Sascha Hauer <>