Programming NXP i.MX RT OTP fuse with west

[danie007]

Hi all,

We're using NXP's i.MX RT 1160 EVK and would like to program One Time Programmable (OTP) fuses on the processor.

Currently we can build, sign (MCUboot) & flash (with JTAG) but the fuse support is unknown

1. Does west support signing of eFuses? Is it planned?
2. How can we program fuses on the i.MX RT board?
3. Are there any documentation/issues regarding this?

Thanks in advance.

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CC @tkmozhi @vishnusudhan

[marc-hb]

@danie007 , west itself does not implement building, signing or flashing. These are Zephyr-specific whereas west is a generic wrapper (and multi-repo tool). For instance you can find the code that implements flashing here: https://github.com/zephyrproject-rtos/zephyr/tree/d8b45e38c130/scripts/west_commands/runners

west is merely invoking west "extensions" implemented by Zephyr https://docs.zephyrproject.org/latest/develop/west/build-flash-debug.html

So unless you have any objection I will transfer this issue to https://github.com/zephyrproject-rtos/zephyr/issues

I think details on how you already perform fusing now would be very useful; I mean how is it done without any (future) west indirection.

[danie007]

@marc-hb thanks for the overview on west and suggesting the appropriate channel for this query. It would be helpful if you could move/transfer this issue to the Zephyr repo.

Currently we're using NXP provided tools (blhost & MFGtool - pointing to respective user guides) for programming the OTP fuses on the i.MX RT board.

⬆️