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fix(cpus): workaround for Neoverse V2 erratum 2801372

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Neoverse V2 erratum 2801372 is a Cat B erratum that applies to
all revisions <=r0p1 and is fixed in r0p2. The workaround is to
insert a dsb before the isb in the power down sequence.

This errata is explained in SDEN 2332927 available at:
https://developer.arm.com/documentation/SDEN2332927

Change-Id: I8716b9785a67270a72ae329dc49a2f2239dfabff
Signed-off-by: Moritz Fischer <moritzf@google.com>
This commit is contained in:
Moritz Fischer 2023-07-06 00:01:23 +00:00
parent d281e05318
commit 40c81ed533
4 changed files with 41 additions and 1 deletions
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4
docs/design/cpu-specific-build-macros.rst
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@ -527,6 +527,10 @@ For Neoverse V2, the following errata build flags are defined :
IP. This needs to be enabled for revisions r0p0 and r0p1. It has been fixed
in r0p2.
- ``ERRATA_V2_2801372``: This applies errata 2801372 workaround to Neoverse-V2
CPU, this affects all configurations. This needs to be enabled for revisions
r0p0 and r0p1. It has been fixed in r0p2.
For Cortex-A710, the following errata build flags are defined :
- ``ERRATA_A710_1987031``: This applies errata 1987031 workaround to