From: Marco Felsch <m.felsch@pengutronix.de>
To: "Ulrich Ölmann" <u.oelmann@pengutronix.de>
Cc: Barebox List <barebox@lists.infradead.org>
Subject: Re: [PATCH] i.MX: hab: always lock SRK hash after fusing
Date: Fri, 6 Mar 2026 11:50:17 +0100 [thread overview]
Message-ID: <47lsia2feh4myvtr3nyxiwmkye7vufp4jaodm4nwbxtx5muje5@f77kdjdibms2> (raw)
In-Reply-To: <20260306103812.1330722-1-u.oelmann@pengutronix.de>
On 26-03-06, 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.
>
> [1] 9dc622d5622c ("i.MX: hab: Add HAB fusebox related convenience functions / command")
>
> Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
next prev parent reply other threads:[~2026-03-06 10:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-06 10:38 Ulrich Ölmann
2026-03-06 10:50 ` Marco Felsch [this message]
2026-03-09 7:50 ` Sascha Hauer
2026-03-09 8:07 ` Sascha Hauer
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