fix(cpus): workaround for Cortex-A78C erratum 2779484

Cortex-A78C erratum 2779484 is a Cat B erratum that applies to
revisions r0p1 and r0p2 and is still open.

The workaround is to set the CPUACTLR3_EL1[47] bit to 1. Setting this
bit might have a small impact on power and negligible impact on

SDEN documentation:

Signed-off-by: Bipin Ravi <>
Change-Id: I9a8c16a845c3ba6eb2f17a5119aa6ca09a0d27ed
4 files changed