LayerscapeのトピックFUID

FUID

CGW — Mon, 06 Feb 2023 17:13:01 GMT

On the ls1012a "There are two memory-mapped FUIDR registers whose values comprise FUID, the registers are 32-bit RO at addresses 1E8_021C and 1E8_0220. More information on these registers can be found in Trust Architecture Manual." Where are these addresses for the LS1028A?

Re: FUID

JosephAtNXP — Thu, 16 Feb 2023 16:59:17 GMT

Hi,

The FUIDR is a 64-bit value set (and write protected) with a software readable value. You can use images that
can only pass secure boot on a specific chip.

This FUIDR value is replaced with a process in the LS1028A, such thing does not occur in almost all LayerScape processors.

The reason that the register is replaced with the process is to ensure the protection intended even in the documentation itself.

Thank you for your patience, regards

Re: FUID

CGW — Fri, 24 Feb 2023 17:34:28 GMT

Any chance you code provide some code to get access to the FUIDR?