feat(cpus): workaround for Cortex A78 AE erratum 1951502
Cortex A78 AE erratum 1951502 is a Cat B erratum that applies to revisions
<= r0p1. It is still open. This erratum is avoided by inserting a DMB ST
before acquire atomic instructions without release semantics through a series
of writes to implementation defined system registers.
SDEN is available at https://developer.arm.com/documentation/SDEN1707912/0900
Change-Id: I812c5a37cdd03486df8af6046d9fa988f6a0a098
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index bc277a7..0a0d2f0 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -281,6 +281,12 @@
- ``ERRATA_A78_1821534``: This applies errata 1821534 workaround to Cortex-A78
CPU. This needs to be enabled for revisions r0p0 and r1p0.
+For Cortex-A78 AE, the following errata build flags are defined :
+
+- ``ERRATA_A78_AE_1951502`` : This applies errata 1951502 workaround to Cortex-A78
+ AE CPU. This needs to be enabled for revisions r0p0 and r0p1. This erratum is
+ still open.
+
For Neoverse N1, the following errata build flags are defined :
- ``ERRATA_N1_1073348``: This applies errata 1073348 workaround to Neoverse-N1