tree 69bcdaf5945b3b88301f5a51c176c75c4ef0d968
parent d55ab3509503257fa66daa55260c4f252c772e3c
author Bipin Ravi <bipin.ravi@arm.com> 1695072853 -0500
committer Varun Wadekar <vwadekar@nvidia.com> 1699023300 +0000

fix(cpus): workaround for Neoverse V2 erratum 2331132

Neoverse V2 erratum 2331132 is a Cat B erratum that applies to all
revisions <= r0p2 and is still open. The workaround is to write the
value 4'b1001 to the PF_MODE bits in the IMP_CPUECTLR2_EL1 register
which will place the data prefetcher in the most conservative mode
instead of disabling it.

SDEN documentation:
https://developer.arm.com/documentation/SDEN2332927/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Ic6c76375df465a4ad2e20dd7add7037477d973c1
(cherry picked from commit 8852fb5b7d94229475446c81cfa58851bc2204ff)