[U-Boot] CONFIG_OPTEE

[Robert P. J. Day]

On Tue, 20 Aug 2019, Stephen Segal wrote:

> Hi all,
>
> I'm not sure if this has been noticed or handled already, but it appears
> there are two separate config options named CONFIG_OPTEE.
>
> In drivers/tee/optee/Kconfig:
>
> config OPTEE
>         bool "OP-TEE"
>         depends on ARM_SMCCC
>         help
>           This implements the OP-TEE Trusted Execution Environment (TEE)
>           driver. OP-TEE is a Trusted OS designed primarily to rely on the
>           ARM TrustZone(R) technology as the underlying hardware isolation
>           mechanism. This driver can request services from OP-TEE, but also
>           handle Remote Procedure Calls (RPC) from OP-TEE needed to
>           execute a service. For more information see:
> https://www.op-tee.org
>
> And in lib/optee/Kconfig:
>
> config OPTEE
>         bool "Support OPTEE images"
>         help
>           U-Boot can be configured to boot OPTEE images.
>           Selecting this option will enable shared OPTEE library code and
>           enable an OPTEE specific bootm command that will perform
> additional
>           OPTEE specific checks before booting an OPTEE image created with
>           mkimage.
>
> This has the effect of making these options inter-dependent: it's
> impossible to enable one without the other.

  pretty sure i pointed that out once upon a time, and someone else
submitted a patch to resolve that.

rday