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RFC: Adding support for ARM (RNDR etc.) to RngDxe
Rebecca Cran <rebecca@...>
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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