linux-kernel - [RFC PATCH 0/4] introduction of a remoteproc tee to load signed firmware images

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Message-ID: <20230523091350.292221-1-arnaud.pouliquen@foss.st.com>
Date:   Tue, 23 May 2023 11:13:46 +0200
From:   Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
To:     Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Jens Wiklander <jens.wiklander@...aro.org>
CC:     <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <op-tee@...ts.trustedfirmware.org>,
        Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
Subject: [RFC PATCH 0/4] introduction of a remoteproc tee to load signed firmware images

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

-- 
2.25.1