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Andre PrzywaraandVarun Wadekar
3d25bdfca3
There are a number of workarounds for CVEs related to sidechannel
attacks on some CPU cores, most of them listed here:
https://developer.arm.com/documentation/110280/latest/
Also there are two other CVEs:
https://developer.arm.com/documentation/110324/latest/
https://developer.arm.com/documentation/110326/latest/
As these page reveals, those workaround do not apply to the Cortex-A53
(or A55) cores, so we can safely disable them in the Allwinner build
recipes, since they only use those two cores so far.
Also disable FEAT_MPAM, which is one of the only three later features
that are enabled default, but are not enabled in Cortex-A53 or A55
cores. Use the opportunity to group those options together and improve
the comment.
This decreases the code size by a few hundred bytes.
Change-Id: Ibc52a4fc9b8f5d9b2b28a2ce13d3ab99b63e9640
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
(cherry picked from commit d86ddcef6f)