tree 7538138fb153c315c8103eb2191c93dd563a1754
parent f5a49dde3a9a6a33e2ed4bfe45799a1dfa4197b5
author Antonio Nino Diaz <antonio.ninodiaz@arm.com> 1552485459 +0000
committer Saheer Babu <saheer.babu@arm.com> 1737462298 +0000

Add ARMv8.3 pointer authentication support

ARMv8.3-PAuth adds functionality that supports address authentication of
the contents of a register before that register is used as the target of
an indirect branch, or as a load.

This feature is supported only in AArch64 state.

This feature is mandatory in ARMv8.3 implementations.

This patch adds the functionality needed for platforms to provide
authentication keys for the TF-A Test Framework, and a new option
(ENABLE_PAUTH) to enable pointer authentication in the framework itself.
This option is disabled by default.

Pointer authentication support has been added to FVP.

Change-Id: Id2d5c978deb68ae60107879f1c3d0b231cba9f42
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>