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:
From: firstname.lastname@example.org <email@example.com> on behalf of Rebecca Cran via groups.io <firstname.lastname@example.org>
Sent: Tuesday, December 8, 2020, 11:33 PM
Cc: email@example.com; 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.
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