[U-Boot] [PATCH] Revert "drivers/crypto/fsl: assign job-rings to non-TrustZone"

[Fabio Estevam]

Hi Breno,

On Mon, Jun 3, 2019 at 11:55 PM Breno Matheus Lima <breno.lima at nxp.com> wrote:
>
> 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 at nxp.com>

Thanks for the fix:

Reviewed-by: Fabio Estevam <festevam at gmail.com>