[EXT] Re: [PATCH 0/4] soc: imx: secvio: Add secvio support

[Vabhav Sharma]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzk at kernel.org>
> Sent: Thursday, May 9, 2024 11:21 AM
> To: Vabhav Sharma <vabhav.sharma at nxp.com>; Rob Herring
> <robh at kernel.org>; Krzysztof Kozlowski <krzk+dt at kernel.org>; Conor Dooley
> <conor+dt at kernel.org>; Franck Lenormand <franck.lenormand at nxp.com>;
> Aisheng Dong <aisheng.dong at nxp.com>; Shawn Guo
> <shawnguo at kernel.org>; Sascha Hauer <s.hauer at pengutronix.de>;
> Pengutronix Kernel Team <kernel at pengutronix.de>; Fabio Estevam
> <festevam at gmail.com>; Peng Fan <peng.fan at nxp.com>
> Cc: devicetree at vger.kernel.org; linux-kernel at vger.kernel.org;
> imx at lists.linux.dev; linux-arm-kernel at lists.infradead.org; Varun Sethi
> <V.Sethi at nxp.com>; Silvano Di Ninno <silvano.dininno at nxp.com>; Pankaj
> Gupta <pankaj.gupta at nxp.com>; Frank Li <frank.li at nxp.com>; Daniel Baluta
> <daniel.baluta at nxp.com>; Iuliana Prodan <iuliana.prodan at nxp.com>; Horia
> Geanta <horia.geanta at nxp.com>
> Subject: [EXT] Re: [PATCH 0/4] soc: imx: secvio: Add secvio support
> 
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> 
> On 09/05/2024 02:45, Vabhav Sharma wrote:
> > The tampers are security feature available on i.MX products and
> > managed by SNVS block.The tamper goal is to detect the variation of
> > hardware or physical parameters, which can indicate an attack.
> >
> > The SNVS, which provides secure non-volatile storage, allows to detect
> > some hardware attacks against the SoC.They are connected to the
> > security-violation ports, which send an alert when an out-of-range
> > value is detected.
> >
> > This detection is done by:
> > -Analog tampers: measure analogic values
> >       - External clock frequency.
> >       - Temperature.
> >       - Voltage.
> >
> > - Digital tampers:
> >       - External tamper
> >       - Other detectors:
> >               - Secure real-time counter rollover tamper.
> >               - Monotonic counter rollover tamper.
> >               - Power supply glitch tamper.
> >
> > The on-chip sensors for voltage, temperature, and clock frequency
> > indicate if tamper scenarios may be present. These sensors generate an
> > out-of-range signal that causes a security violation to clear the
> > authentication and storage keys and to block access to sensitive
> > information.
> >
> > Add linux module secvio driver to handle security violation interrupt.
> >
> > The "imx-secvio-sc" module is designed to report security violations
> > and tamper triggering to the user.
> >
> > The functionalities of the module are accessible via the "debugfs"
> > kernel.The folder containing the interface files for the module is
> > "<kernel_debugfs>/secvio/".
> >
> > Get status
> > Reading from the "info" file will return the status of security:
> > - Fuse related to security tampers.
> > - SNVS readable registers.
> > - DGO registers.
> >
> > Signed-off-by: Vabhav Sharma <vabhav.sharma at nxp.com>
> > ---
> > Vabhav Sharma (4):
> >       dt-bindings: firmware: secvio: Add device tree bindings
> >       firmware: imx: Add SC APIs required for secvio module
> >       soc: imx: secvio: Add support for SNVS secvio and tamper via SCFW
> >       arm64: dts: imx8q: Add node for Security Violation
> 
> Please version your patches correctly and provide changelog.
Sure, I will update the changelog for v1 and v2.
> 
> I wrote about b4 already, which solves this as well.
Ok, I used it, will provide details for changelog in next version
> 
> What changed here?
As highlighted by you, Used b4 script to auto add all maintainer/reviewer.
> 
> Best regards,
> Krzysztof