Device serial number

allard · ‎2025-02-24

Simple question:

If i'm right the serial number returned by cat /sys/firmware/devicetree/base/serial-number is the UID from BSEC. Where is the code responsible for setting this value? I've seen the function get_board_serial in u-boot but it doesnt seem to be implement for the stm32mp1 board.

PatrickF · ‎2025-02-24

Hi @allard ,

not sure it answer your question.

The 96-bits UID is set in factory (i.e. fused inside OTP), readable thru BSEC. It cannot be altered and it is guaranteed to be unique within a STM32MP serie.

Regards.

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