I am trying to figure out which VIA CPUs support hardware RNG under
recent FreeBSD. I've been looking at things on 7.0-RELEASE-p2. If
there is something that else I should be looking at, please let me
Based on 'man 4 random' I see:
"The only hardware implementation currently is for the
VIA C3 Nehemiah (stepping 3 or greater) CPU. More will be added in the
Poking around in the kernel I see that indeed nehemiah and yarrow seem
to be the only random sources there.
SYSCTL_UINT(_hw, OID_AUTO, via_feature_rng, CTLFLAG_RD,
&via_feature_rng, 0, "VIA C3/C7 RNG feature available in CPU");
Based on all this and some reading on wikipedia, my best guess is that
C3 Nehemiah and later and all C7 support the hardware RNG. Can anyone
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