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

Samer El-Haj-Mahmoud

There is also the TRNG FW API, which is an architected SMC firmware interface:

From: <> on behalf of Rebecca Cran via <>
Sent: Tuesday, December 8, 2020, 11:33 PM
Cc:; 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 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
( and other platforms, so a more
thorough rearchitecting/redesign may be desired.

Rebecca Cran

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