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arm64: Add support for bcm2838 RNG

Description

arm64: Add support for bcm2838 RNG

The hardware random number generator of the RPi4 differs slightly
from the version found on the RPi3.

This commit extends the existing bcm2835_rng driver to function on the RPi4.

Submitted by: James Mintram <me at jamesrm dot com>
Reviewed by: markm, cem, delphij
Approved by: csprng(cem, markm)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22493

Details

Provenance
gbeAuthored on Mar 6 2021, 11:28 AM
Reviewer
markm
Differential Revision
D22493: Support for bcm2838 RNG
Parents
R10:c743a6bd4fc0: Implement mallocarray_domainset(9) variant of mallocarray(9).
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