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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I am working on the TRNG FW API interface and will share more details for the discussion soon.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">We had some thoughts about streamlining the RngDxe implementations and would like to share some diagrams for the discussion.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">My diagrams are in Visio that I can export as JPG images. However, I am open to switching to any other suggested tool.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi Leif,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Can you suggest on how we can collaborate to share diagrams/documents, please?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Sami Mujawar<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> devel@edk2.groups.io <devel@edk2.groups.io>
<b>On Behalf Of </b>Samer El-Haj-Mahmoud via groups.io<br>
<b>Sent:</b> 09 December 2020 04:48 AM<br>
<b>To:</b> devel@edk2.groups.io<br>
<b>Cc:</b> rfc@edk2.groups.io; Jiewen Yao <jiewen.yao@intel.com>; Rahul Kumar <rahul1.kumar@intel.com><br>
<b>Subject:</b> Re: [edk2-devel] RFC: Adding support for ARM (RNDR etc.) to RngDxe<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">There is also the TRNG FW API, which is an architected SMC firmware interface:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Arial",sans-serif;color:black"><a href="https://developer.arm.com/documentation/den0098/latest/">https://developer.arm.com/documentation/den0098/latest/</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><strong><span style="font-family:"Calibri",sans-serif">From:</span></strong>
<a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a> <<a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a>> on behalf of Rebecca Cran via groups.io <<a href="mailto:rebecca=nuviainc.com@groups.io">rebecca=nuviainc.com@groups.io</a>><br>
<strong><span style="font-family:"Calibri",sans-serif">Sent:</span></strong> Tuesday, December 8, 2020, 11:33 PM<br>
<strong><span style="font-family:"Calibri",sans-serif">To:</span></strong> <a href="mailto:devel@edk2.groups.io">
devel@edk2.groups.io</a><br>
<strong><span style="font-family:"Calibri",sans-serif">Cc:</span></strong> <a href="mailto:rfc@edk2.groups.io">
rfc@edk2.groups.io</a>; Jiewen Yao; Rahul Kumar<br>
<strong><span style="font-family:"Calibri",sans-serif">Subject:</span></strong> [edk2-devel] RFC: Adding support for ARM (RNDR etc.) to RngDxe<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Currently, RngDxe in SecurityPkg only supports Intel, with RdRand support.<br>
<br>
<br>
This RFC is to start a discussion about adding support for ARM.<br>
<br>
<br>
I have a Git branch with support for the optional ARMv8.5 RNDR <br>
instruction at <a href="https://github.com/bcran/edk2/commits/bcran-rndr">https://github.com/bcran/edk2/commits/bcran-rndr</a> which
<br>
moves the existing Intel support into a Rand directory, and adds code to <br>
support RNDR in a new AArch64 directory.<br>
<br>
There are other RNG implementations available for ARM, including <br>
platform-specific approaches on Graviton <br>
(<a href="https://lwn.net/Articles/790304/">https://lwn.net/Articles/790304/</a>) and other platforms, so a more
<br>
thorough rearchitecting/redesign may be desired.<br>
<br>
<br>
-- <br>
Rebecca Cran<br>
<br>
<br>
<br>
<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">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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