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

["Leif Lindholm" <leif@nuviainc.com>]

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@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Samer El-Haj-Mahmoud via groups.io
> Sent: 09 December 2020 04:48 AM
> To: devel@edk2.groups.io
> Cc: rfc@edk2.groups.io; Jiewen Yao <jiewen.yao@intel.com>; Rahul Kumar <rahul1.kumar@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@edk2.groups.io<mailto:devel@edk2.groups.io> <devel@edk2.groups.io<mailto:devel@edk2.groups.io>> on behalf of Rebecca Cran via groups.io <rebecca=nuviainc.com@groups.io<mailto:rebecca=nuviainc.com@groups.io>>
> Sent: Tuesday, December 8, 2020, 11:33 PM
> To: devel@edk2.groups.io<mailto:devel@edk2.groups.io>
> Cc: rfc@edk2.groups.io<mailto:rfc@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
> 
> 
> 
> 
> 
> 
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