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bbff267b6f
Certain erratum workarounds like Neoverse N1 1542419, need a part of their mitigation done in EL3 and the rest in lower EL. But currently such workarounds return HIGHER_EL_MITIGATION which indicates that the erratum has already been mitigated by a higher EL(EL3 in this case) which causes the lower EL to not apply it's part of the mitigation. This patch fixes this issue by adding support for split workarounds so that on certain errata we return AFFECTED even though EL3 has applied it's workaround. This is done by reusing the chosen field of erratum_entry structure into a bitfield that has two bitfields - Bit 0 indicates that the erratum has been enabled in build, Bit 1 indicates that the erratum is a split workaround and should return AFFECTED instead of HIGHER_EL_MITIGATION. SDEN documentation: https://developer.arm.com/documentation/SDEN885747/latest Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com> Change-Id: Iec94d665b5f55609507a219a7d1771eb75e7f4a7 |
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