[PATCH] Kconfig: Don't use RSA_FREESCALE_EXP on MX7ULP

[Oleksandr Suvorov]

On Wed, Aug 25, 2021 at 5:13 PM Tom Rini <trini at konsulko.com> wrote:
>
> On Wed, Aug 25, 2021 at 04:56:51PM +0300, Oleksandr Suvorov wrote:
>
> > From: Ricardo Salveti <ricardo at foundries.io>
> >
> > The CAAM on IMX7ULP doesn't support public key hardware acceleration
> > (PKHA), as in other NXP parts. Disable RSA_FREESCALE_EXP for IMX7ULP
> > too.
> >
> > Fixed: f4e9ff7135 ("Kconfig: Don't use RSA_FREESCALE_EXP on IMX")
> > Signed-off-by: Ricardo Salveti <ricardo at foundries.io>
> > Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov at foundries.io>
> > ---
> >
> >  lib/rsa/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/lib/rsa/Kconfig b/lib/rsa/Kconfig
> > index a90d67e5a8..55e17596f0 100644
> > --- a/lib/rsa/Kconfig
> > +++ b/lib/rsa/Kconfig
> > @@ -1,6 +1,6 @@
> >  config RSA
> >       bool "Use RSA Library"
> > -     select RSA_FREESCALE_EXP if FSL_CAAM && !ARCH_MX7 && !ARCH_MX6 && !ARCH_MX5
> > +     select RSA_FREESCALE_EXP if FSL_CAAM && !ARCH_MX7 && !ARCH_MX7ULP && !ARCH_MX6 && !ARCH_MX5
> >       select RSA_SOFTWARE_EXP if !RSA_FREESCALE_EXP
> >       help
> >         RSA support. This enables the RSA algorithm used for FIT image
>
> What iMX families does this work on?  I think we need to look at fixing
> the logic to be a bit more restrictive to start with, instead of opting
> families out.

Frankly, I dunno. We fix what doesn't work. Investigating all imx families
and reworking everything around would take much more time and can't be done
right now.
Anyway, thanks for your question, I rechecked the patch and improved it.
The v2 is coming.
>
> --
> Tom



--
Best regards,

Oleksandr Suvorov
Software Engineer
W: www.foundries.io