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
performance.
SDEN documentation:
https://developer.arm.com/documentation/SDEN2004089/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I9a8c16a845c3ba6eb2f17a5119aa6ca09a0d27ed
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 53b54b8..0f62778 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -369,6 +369,10 @@
Cortex-A78C CPU. This needs to be enabled for revisions r0p0, r0p1 and r0p2.
This erratum is still open.
+- ``ERRATA_A78C_2779484`` : This applies errata 2779484 workaround to
+ Cortex-A78C CPU. This needs to be enabled for revisions r0p1 and r0p2.
+ This erratum is still open.
+
For Cortex-X1 CPU, the following errata build flags are defined:
- ``ERRATA_X1_1821534`` : This applies errata 1821534 workaround to Cortex-X1