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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Dec 2020 04:48:29.1490 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f6b145fe-31c3-47c5-8966-08d89bfdac3d X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR03FT027.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB3806 Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_DB7PR08MB3260A8786D9E46AC468846CA90CC0DB7PR08MB3260eurp_" --_000_DB7PR08MB3260A8786D9E46AC468846CA90CC0DB7PR08MB3260eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable There is also the TRNG FW API, which is an architected SMC firmware interfa= ce: https://developer.arm.com/documentation/den0098/latest/ ________________________________ From: devel@edk2.groups.io on behalf of Rebecca Cra= n via groups.io Sent: Tuesday, December 8, 2020, 11:33 PM To: devel@edk2.groups.io Cc: 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 IMPORTANT NOTICE: The contents of this email and any attachments are confi= dential and may also be privileged. If you are not the intended recipient, = please notify the sender immediately and do not disclose the contents to an= y other person, use it for any purpose, or store or copy the information in= any medium. Thank you. --_000_DB7PR08MB3260A8786D9E46AC468846CA90CC0DB7PR08MB3260eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
There is also the TRNG FW API, which is an architected SMC firmware interf= ace:


From: devel@edk2.groups.io <= devel@edk2.groups.io> on behalf of Rebecca Cran via groups.io <rebecc= a=3Dnuviainc.com@groups.io>
Sent: Tuesday, December 8, 2020, 11:33 PM
To: devel@edk2.groups.io
Cc: rfc@edk2.groups.io; Jiewen Yao; Rahul Kumar
Subject: [edk2-devel] RFC: Adding support for ARM (RNDR e= tc.) to RngDxe

Currently, RngDxe in SecurityPkg only supports In= tel, 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 <= br> 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/790= 304/) and other platforms, so a more
thorough rearchitecting/redesign may be desired.


--
Rebecca Cran








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