[PATCH v2] tee: optee: sync cache on pre-reloc OP-TEE invocation

[Jens Wiklander]

On Wed, May 19, 2021 at 4:28 PM Etienne Carriere
<etienne.carriere at linaro.org> wrote:
>
> This change ensures both U-Boot and OP-TEE see the same content
> from shared memory when OP-TEE is invoked prior U-Boot relocation.
>
> This change is required since U-Boot may execute with data cahce off

cache

> while OP-TEE always enables cache on memory shared with U-Boot.
>
> Signed-off-by: Etienne Carriere <etienne.carriere at linaro.org>
> ---
> Changes since v1:
> - Fix invocation argument buffer size in optee/core.c, using
>   OPTEE_MSG_GET_ARG_SIZE().
> - add missing #include <asm/cache.h> in tee-uclass.c
> ---
>  drivers/tee/optee/core.c | 21 ++++++++++++++++++++-
>  drivers/tee/tee-uclass.c | 19 ++++++++++++++++++-
>  include/tee.h            |  6 ++++++
>  3 files changed, 44 insertions(+), 2 deletions(-)

With the spell error in the commit message fixed:
Reviewed-by: Jens Wiklander <jens.wiklander at linaro.org>

Cheers,
Jens