fix(errata): workaround for Cortex-X2 erratum 2216384
Cortex-X2 erratum 2216384 is a Cat B erratum that applies to
revisions r0p0, r1p0 and r2p0 of CPU. It is fixed in r2p1.
The workaround is to set CPUACTLR5_EL1[17] to 1'b1 followed by
applying an instruction patching sequence.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775100/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I3c216161678887c06a28c59644e784e0c7d37bab
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 54b7bac..244abf0 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -462,6 +462,10 @@
Cortex-X2 CPU. This needs to be enabled only for revisions r0p0, r1p0 and
r2p0 of the CPU, it is fixed in r2p1.
+- ``ERRATA_X2_2216384``: This applies errata 2216384 workaround to
+ Cortex-X2 CPU. This needs to be enabled only for revisions r0p0, r1p0 and
+ r2p0 of the CPU, it is fixed in r2p1.
+
DSU Errata Workarounds
----------------------