[PATCH] i.MX: hab: always lock SRK hash after fusing

[Sascha Hauer]

On Mon, Mar 09, 2026 at 08:50:38AM +0100, Sascha Hauer wrote:
> 
> On Fri, 06 Mar 2026 11:38:12 +0100, Ulrich Ölmann wrote:
> > The flag IMX_SRK_HASH_WRITE_LOCK has been present since the introduction of
> > barebox' hab command in [1], but only got its first user recently. Keeping SRK
> > hash locking optional is dangerous though: after programming the SRK hash,
> > leaving it writable allows later manipulations which can render a device
> > unbootable.
> > 
> > Make SRK hash programming always burn the corresponding lock fuses on all
> > supported i.MX variants (IIM/OCOTP), and remove IMX_SRK_HASH_WRITE_LOCK.
> > 
> > [...]
> 
> Applied, thanks!
> 
> [1/1] i.MX: hab: always lock SRK hash after fusing
>       https://git.pengutronix.de/cgit/barebox/commit/?id=1f4d4a2b75b7 (link may not be stable)

Also added a note to the migration guide.

Sascha

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