tree a8918a4ee5d3d2ede6cc55f848ac6f597ce8913f
parent 3376eea9463218105ef23e452f33131d0410e70e
author Patrick Williams <patrick@stwcx.xyz> 1583173212 -0600
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1600110284 +0000

rng-tools: use 'hw-rng' to disable libjitterentropy

The warrior version of rng-tools introduced an optional PACKAGECONFIG,
which was enabled by default, called `libjitterentropy`.  For BMC chips
which have a hardware RNG, this is not a necessary feature, and causes
a noticeable delay in the start of the rngd.  On systems with very low
IO activity we are seeing cases of what appears to be hangs.

Define a machine feature which can be used to disable the PACKAGECONFIG
for machines which contain a BMC chip with a hardware RNG.  Aspeed has
one which is supported; Nuvoton currently does not.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Iee340ffd294c4f40ba3360acd3f750d886865608