Workaround for Cortex A78 erratum 1951500
Cortex A78 erratum 1951500 is a Cat B erratum that applies to revisions
r0p0, r1p0, and r1p1. The workaround is to insert a DMB ST before
acquire atomic instructions without release semantics. This workaround
works on revisions r1p0 and r1p1, in r0p0 there is no workaround.
SDEN can be found here:
https://documentation-service.arm.com/static/5fb66157ca04df4095c1cc2e
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I47610cee75af6a127ea65edc4d5cffc7e6a2d0a3
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 09aa301..be7096c 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -268,6 +268,10 @@
- ``ERRATA_A78_1941498``: This applies errata 1941498 workaround to Cortex-A78
CPU. This needs to be enabled for revisions r0p0, r1p0, and r1p1 of the CPU.
+- ``ERRATA_A78_1951500``: This applies errata 1951500 workaround to Cortex-A78
+ CPU. This needs to be enabled for revisions r1p0 and r1p1, r0p0 has the same
+ issue but there is no workaround for that revision.
+
For Neoverse N1, the following errata build flags are defined :
- ``ERRATA_N1_1073348``: This applies errata 1073348 workaround to Neoverse-N1