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SubjectRe: [RFC PATCH 0/4] introduction of a remoteproc tee to load signed firmware images
On Tue, May 23, 2023 at 11:13:46AM +0200, Arnaud Pouliquen wrote:
> This RFC proposes an implementation of a remoteproc tee driver to
> communicate with a TEE trusted application in charge of authenticating
> and loading remoteproc firmware image in an Arm secure context.
>
> The services implemented are the same as those offered by the Linux
> remoteproc framework:
> - load of a signed firmware
> - start/stop of a coprocessor
> - get the resource table
>
>
> The OP-TEE code in charge of providing the service in a trusted application
> is proposed for upstream here:
> https://github.com/OP-TEE/optee_os/pull/6027
>
> For more details on the implementation a presentation is available here:
> https://resources.linaro.org/en/resource/6c5bGvZwUAjX56fvxthxds
>
> Arnaud Pouliquen (4):
> tee: Re-enable vmalloc page support for shared memory
> remoteproc: Add TEE support
> dt-bindings: remoteproc: add compatibility for TEE support
> remoteproc: stm32: Add support of an OP-TEE TA to load the firmware
>
> .../bindings/remoteproc/st,stm32-rproc.yaml | 33 +-
> drivers/remoteproc/Kconfig | 9 +
> drivers/remoteproc/Makefile | 1 +
> drivers/remoteproc/stm32_rproc.c | 234 +++++++++--
> drivers/remoteproc/tee_remoteproc.c | 397 ++++++++++++++++++
> drivers/tee/tee_shm.c | 24 +-
> include/linux/tee_remoteproc.h | 101 +++++
> 7 files changed, 753 insertions(+), 46 deletions(-)
> create mode 100644 drivers/remoteproc/tee_remoteproc.c
> create mode 100644 include/linux/tee_remoteproc.h

Looking at comments from Christoph, there seems to be a good refactoring
exercise in store for this pathset. As such I will wait for the next revision
to look at it.

Thanks,
Mathieu

>
> --
> 2.25.1
>

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