tree 83e9dc96a440e1c2f113bc822c7ecd3ebc7baf5d
parent f512157708a0b7a5946a17a11cd8590d813c375f
author Soby Mathew <soby.mathew@arm.com> 1412265411 +0100
committer Soby Mathew <soby.mathew@arm.com> 1422038175 +0000

Validate power_state and entrypoint when executing PSCI calls

This patch allows the platform to validate the power_state and
entrypoint information from the normal world early on in PSCI
calls so that we can return the error safely. New optional
pm_ops hooks `validate_power_state` and `validate_ns_entrypoint`
are introduced to do this.

As a result of these changes, all the other pm_ops handlers except
the PSCI_ON handler are expected to be successful. Also, the PSCI
implementation will now assert if a PSCI API is invoked without the
corresponding pm_ops handler being registered by the platform.

NOTE : PLATFORM PORTS WILL BREAK ON MERGE OF THIS COMMIT. The
pm hooks have 2 additional optional callbacks and the return type
of the other hooks have changed.

Fixes ARM-Software/tf-issues#229

Change-Id: I036bc0cff2349187c7b8b687b9ee0620aa7e24dc