[edk2-devel] RFC: Adding support for ARM (RNDR etc.) to RngDxe

[Leif Lindholm]

Hi Sami,

JPGs work, but preferably published in a location where they're
unlikely to be deleted, and posted as URLs.

https://app.diagrams.net/ doesn't require a licensed application to
edit, and can be "saved to github" for example.

Please make sure to use the diagrams to support/clarify the mailing
list conversation rather than replacing it.

Best Regards,

Leif

On Thu, Dec 10, 2020 at 11:26:26 +0000, Sami Mujawar wrote:
> Hi All,
> 
> I am working on the TRNG FW API interface and will share more details for the discussion soon.
> We had some thoughts about streamlining the RngDxe implementations
> and would like to share some diagrams for the discussion.
> My diagrams are in Visio that I can export as JPG images. However, I
> am open to switching to any other suggested tool.
> 
> Hi Leif,
> 
> Can you suggest on how we can collaborate to share diagrams/documents, please?
> 
> Regards,
> 
> Sami Mujawar
> 
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Samer El-Haj-Mahmoud via groups.io
> Sent: 09 December 2020 04:48 AM
> To: devel at edk2.groups.io
> Cc: rfc at edk2.groups.io; Jiewen Yao <jiewen.yao at intel.com>; Rahul Kumar <rahul1.kumar at intel.com>
> Subject: Re: [edk2-devel] RFC: Adding support for ARM (RNDR etc.) to RngDxe
> 
> There is also the TRNG FW API, which is an architected SMC firmware interface:
> 
> https://developer.arm.com/documentation/den0098/latest/
> 
> ________________________________
> From: devel at edk2.groups.io<mailto:devel at edk2.groups.io> <devel at edk2.groups.io<mailto:devel at edk2.groups.io>> on behalf of Rebecca Cran via groups.io <rebecca=nuviainc.com at groups.io<mailto:rebecca=nuviainc.com at groups.io>>
> Sent: Tuesday, December 8, 2020, 11:33 PM
> To: devel at edk2.groups.io<mailto:devel at edk2.groups.io>
> Cc: rfc at edk2.groups.io<mailto:rfc at edk2.groups.io>; Jiewen Yao; Rahul Kumar
> Subject: [edk2-devel] RFC: Adding support for ARM (RNDR etc.) to RngDxe
> 
> Currently, RngDxe in SecurityPkg only supports Intel, with RdRand support.
> 
> 
> This RFC is to start a discussion about adding support for ARM.
> 
> 
> I have a Git branch with support for the optional ARMv8.5 RNDR
> instruction at https://github.com/bcran/edk2/commits/bcran-rndr which
> moves the existing Intel support into a Rand directory, and adds code to
> support RNDR in a new AArch64 directory.
> 
> There are other RNG implementations available for ARM, including
> platform-specific approaches on Graviton
> (https://lwn.net/Articles/790304/) and other platforms, so a more
> thorough rearchitecting/redesign may be desired.
> 
> 
> --
> Rebecca Cran
> 
> 
> 
> 
> 
> 
> 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.
> 


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