tree 30cb7cd10deefce1b2d2e2eb106123ea1938101a
parent fee323d92b05ead347509434017989b3ce332398
author dp-arm <dimitris.papastamos@arm.com> 1491907729 +0100
committer dp-arm <dimitris.papastamos@arm.com> 1492697121 +0100

css: Ensure PSCI system off/reset is not interrupted

If there is a pending interrupt, it is possible for the AP to come out
of the final WFI before SCP has a chance to act on it.  Prevent this
by disabling the GIC CPU interface before issuing a WFI.

Previously, SCP would not wait on WFI before taking an action but
would shut down the core or system regardless.

Change-Id: Ib0bcf69a515d540ed4f73c11e40ec7c863e39c92
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>