<Cc alias>

I guess, something went wrong when I clicked "Reply all" the first time.

Manish, can you also talk about the tasks that Arm is willing to work on? Then we can ask for volunteers for the remaining ones. I'm sure, NVIDIA will contribute as this topic is close to our heart.

-Varun

From: Manish Pandey2 Manish.Pandey2@arm.com Sent: Monday, January 25, 2021 8:05 AM To: Varun Wadekar vwadekar@nvidia.com Cc: Filipe Rinaldi Filipe.Rinaldi@arm.com; Robin Randhawa Robin.Randhawa@ARM.com; Ed Doxat Ed.Doxat@arm.com; Joanna Farley joannafarley@icloud.com; Manish Badarkhe Manish.Badarkhe@arm.com; Olivier Deprez Olivier.Deprez@arm.com; Matteo Carlini Matteo.Carlini@arm.com; Doug Richmond Doug.Richmond@arm.com Subject: Re: Gather GIC changes required for safety critical machines

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++ Other Arm folks

Just realized that Varun has reduced the recipients(guess that was intentional) ________________________________ From: Manish Pandey2 <Manish.Pandey2@arm.commailto:Manish.Pandey2@arm.com> Sent: 25 January 2021 10:15 To: Varun Wadekar <vwadekar@nvidia.commailto:vwadekar@nvidia.com> Cc: Filipe Rinaldi <Filipe.Rinaldi@arm.commailto:Filipe.Rinaldi@arm.com>; Robin Randhawa <Robin.Randhawa@ARM.commailto:Robin.Randhawa@ARM.com>; Ed Doxat <Ed.Doxat@arm.commailto:Ed.Doxat@arm.com> Subject: Re: Gather GIC changes required for safety critical machines

Hi Varun,

We are trying to do both, based on interest from community we will prioritize these tasks. The reason why we can't do all the asks (mentioned in the list) ourselves is, currently we do not have "use cases/platforms" to test all the features, so we would rely on wider community to understand the requirements and work together to develop/test those features.

Thanks Manish ________________________________ From: Varun Wadekar <vwadekar@nvidia.commailto:vwadekar@nvidia.com> Sent: 22 January 2021 17:46 To: Manish Pandey2 <Manish.Pandey2@arm.commailto:Manish.Pandey2@arm.com> Cc: Filipe Rinaldi <Filipe.Rinaldi@arm.commailto:Filipe.Rinaldi@arm.com>; Robin Randhawa <Robin.Randhawa@ARM.commailto:Robin.Randhawa@ARM.com>; Ed Doxat <Ed.Doxat@arm.commailto:Ed.Doxat@arm.com> Subject: RE: Gather GIC changes required for safety critical machines

HI Manish,

Thanks for starting this discussion. The list captures all the functionalities that are useful and interesting to us.

Trying to understand the ask - are you trying to get feedback to allow you to prioritize the feature list? Or are you asking for the community to rate importance of these requirements?

I am afraid, if there isn't enough interest the list might be trimmed which would be an absolute shame.

-Varun

From: TF-A <tf-a-bounces@lists.trustedfirmware.orgmailto:tf-a-bounces@lists.trustedfirmware.org> On Behalf Of Manish Pandey2 via TF-A Sent: Friday, January 22, 2021 8:02 AM To: tf-a@lists.trustedfirmware.orgmailto:tf-a@lists.trustedfirmware.org Cc: Filipe Rinaldi <Filipe.Rinaldi@arm.commailto:Filipe.Rinaldi@arm.com>; Robin Randhawa <Robin.Randhawa@ARM.commailto:Robin.Randhawa@ARM.com>; Ed Doxat <Ed.Doxat@arm.commailto:Ed.Doxat@arm.com> Subject: [TF-A] Gather GIC changes required for safety critical machines

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Hi,

GIC600-AE is variant of GIC for safety critical machines, though its TRM is publicly available from quite some time but currently we do not have support in TF-A.

Purpose of this email is to kick start discussions around various possible GIC requirements as far as safety critical machines are concerned.

We have created following list of requirements based on inputs we got so far, changes are either adding new AE features or enhancements to existing drivers.

GIC-600AE feature requirement:

- Inject and detect RAS errors using Fault management unit(FMU)

- Validating feature parity with GIC600

- Running GIC IP in Dual core Lock-step(DCLS) mode.

GIC/RAS driver enhancements:

- Read trace and PMU records

- Keep RAS error records alive across a reset

- Disable GICR frames of fused-off cores

- Support for message signalled interrupts

- Saving/Restoring additional GIC registers during PM events

Feel free to add any additional requirements.

If there is enough community interest during the next Tech-forum meeting(28th Jan) we would like to go through these requirements in more detail.

Thanks Manish IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.