tree bc5ec93bfc0ec7642d13aeb7c59c0517e67bce9c
parent a08b1549f6d6a65f567299ba9b8f697a2ce6bc97
author Wendy Liang <jliang@xilinx.com> 1505325762 -0700
committer Wendy Liang <jliang@xilinx.com> 1515456189 -0800

Introduce ZynqMP IPI implementation

Previously, ZynqMP IPI in ATF is only for ZynqMP PM,
This patch is to have a ZynqMP IPI implementation to handle
both ZynqMP PM IPI requirement and IPI mailbox service requirement
which will be introduced next.

We control IPI agents registers access but not IPI buffers access in
this implementation. Each IPI mailbox user will directly access the
IPI buffers.

Signed-off-by: Wendy Liang <jliang@xilinx.com>