tree ab094c5624364f25f07f791a3df8a957e5cb2790
parent 33e3e925415f36f81b593dc269d203ad2165e13e
author johpow01 <john.powell@arm.com> 1602106717 -0500
committer John <john.powell@arm.com> 1626730055 +0100

errata: workaround for Neoverse V1 errata 1940577

Neoverse V1 erratum 1940577 is a Cat B erratum, present in some
revisions of the V1 processor core.  The workaround is to insert a
DMB ST before acquire atomic instructions without release semantics.
This issue is present in revisions r0p0 - r1p1  but this workaround
only applies to revisions r1p0 - r1p1, there is no workaround for older
versions.

SDEN can be found here:
https://documentation-service.arm.com/static/60d499080320e92fa40b4625

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I210ad7d8f31c81b6ac51b028dfbce75a725c11aa