> -----Original Message----- > From: Krzysztof Kozlowski <krzk@xxxxxxxxxx> > Sent: Thursday, May 9, 2024 11:21 AM > To: Vabhav Sharma <vabhav.sharma@xxxxxxx>; Rob Herring > <robh@xxxxxxxxxx>; Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>; Conor Dooley > <conor+dt@xxxxxxxxxx>; Franck Lenormand <franck.lenormand@xxxxxxx>; > Aisheng Dong <aisheng.dong@xxxxxxx>; Shawn Guo > <shawnguo@xxxxxxxxxx>; Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>; > Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>; Fabio Estevam > <festevam@xxxxxxxxx>; Peng Fan <peng.fan@xxxxxxx> > Cc: devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > imx@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; Varun Sethi > <V.Sethi@xxxxxxx>; Silvano Di Ninno <silvano.dininno@xxxxxxx>; Pankaj > Gupta <pankaj.gupta@xxxxxxx>; Frank Li <frank.li@xxxxxxx>; Daniel Baluta > <daniel.baluta@xxxxxxx>; Iuliana Prodan <iuliana.prodan@xxxxxxx>; Horia > Geanta <horia.geanta@xxxxxxx> > Subject: [EXT] Re: [PATCH 0/4] soc: imx: secvio: Add secvio support > > Caution: This is an external email. Please take care when clicking links or > opening attachments. When in doubt, report the message using the 'Report > this email' button > > > 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@xxxxxxx> > > --- > > 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
