fix(cpus): workaround for Neoverse-N2 erratum 2388450
Neoverse-N2 erratum 2388450 is a cat B erratum that applies to
revision r0p0 and is fixed in r0p1. The workaround is to set
bit[40] of CPUACTLR2_EL1 to disable folding of demand requests into
older prefetches with L2 miss requests outstanding.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest
Change-Id: I6dd949c79cea8dbad322e569aa5de86cf8cf9639
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 60313d5..07e7821 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -498,6 +498,10 @@
- ``ERRATA_N2_2280757``: This applies errata 2280757 workaround to Neoverse-N2
CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
+- ``ERRATA_N2_2388450``: This applies errata 2388450 workaround to Neoverse-N2
+ CPU. This needs to be enabled for revision r0p0 of the CPU, it is fixed in
+ r0p1.
+
For Cortex-X2, the following errata build flags are defined :
- ``ERRATA_X2_2002765``: This applies errata 2002765 workaround to Cortex-X2