linux-imx

MLKU-114-3 crypto: caam - OP-TEE firmware support

caam driver needs to be aware of OP-TEE f/w presence, since some things
are done differently:

1. there is no access to controller's register page (note however that
some registers are aliased in job rings' register pages)

It's worth mentioning that due to this, MCFGR[PS] cannot be read
and driver assumes MCFGR[PS] = b'0 - engine using 32-bit address pointers.

This is in sync with the fact that:
-all i.MX SoCs currently use MCFGR[PS] = b'0
-only i.MX OP-TEE use cases don't allow access to controller register page

Note: When DN OP-TEE will start enforcing the same policy,
this solution will stop working and information about caam configuration
will have to deduced in some other way.

2. as a consequence of "1.", part of the initialization is moved in
other f/w (TF-A etc.), e.g. RNG initialization

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>