Revert "drivers/crypto/fsl: assign job-rings to non-TrustZone"
authorBreno Matheus Lima <breno.lima@nxp.com>
Tue, 4 Jun 2019 02:54:44 +0000 (02:54 +0000)
committerStefano Babic <sbabic@denx.de>
Tue, 11 Jun 2019 08:42:48 +0000 (10:42 +0200)
commit51f1357f3428819eeb254ab3f496c2803b36bbb3
tree69cb0d1db21d94f009b9a010cdc219f06aa69a67
parent5f6d63adb948178483eb501514994a33e9e200ac
Revert "drivers/crypto/fsl: assign job-rings to non-TrustZone"

Commit 22191ac35344 ("drivers/crypto/fsl: assign job-rings to
 non-TrustZone") breaks HABv4 encrypted boot support in the
following i.MX devices:

- i.MX6UL
- i.MX7S
- i.MX7D
- i.MX7ULP

For preparing a HABv4 encrypted boot image it's necessary to
encapsulate the generated DEK in a blob. In devices listed
above the blob generation function takes into consideration
the Job Ring TrustZone ownership configuration (JROWN_NS)
and can be only decapsulated by the same configuration.

The ROM code expects DEK blobs encapsulated by the Secure World
environments which commonly have JROWN_NS = 0.

As U-Boot is running in Secure World we must have JROWN_NS = 0
so the blobs generated by dek_blob tool can be decapsulated
by the ROM code.

Job-rings assignment is now handled in OP-TEE OS, this commit can
be safely reverted.
https://github.com/OP-TEE/optee_os/pull/2986

This reverts commit 22191ac353445ad8fafc5a78aefcd94e78963041.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
drivers/crypto/fsl/jr.c
drivers/crypto/fsl/jr.h