From: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
To: Bjorn Andersson <andersson@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Jens Wiklander <jens.wiklander@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: <linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-remoteproc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<op-tee@lists.trustedfirmware.org>, <devicetree@vger.kernel.org>,
Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Subject: [PATCH v4 0/4] Introduction of a remoteproc tee to load signed firmware
Date: Fri, 8 Mar 2024 15:47:04 +0100 [thread overview]
Message-ID: <20240308144708.62362-1-arnaud.pouliquen@foss.st.com> (raw)
Main updates from the previous version [1]:
- Remove the alternate boot sequence: rproc_alt_fw_boot()
- Introduce tee_rproc_parse_fw function
- create a cached table as done inrproc_elf_load_rsc_table[2],
- PR sent to OP-TEE to allow TA_RPROC_FW_CMD_LOAD_FW service
re-entrance[3].
- Rework TEE_REMOTEPROC description in Kconfig
- Introduce proc::tee_interface
Patch commit messages list updates with more details
base-commit: 62210f7509e13a2caa7b080722a45229b8f17a0a
[1] https://lore.kernel.org/linux-arm-kernel/Zdjl6Z2ktTwi+oWp@p14s/T/#m53f994237dc984c5dbbe3c75d2c30fcfff8548a0
[2] https://elixir.bootlin.com/linux/latest/source/drivers/remoteproc/remoteproc_elf_loader.c#L326
[3] https://github.com/OP-TEE/optee_os/pull/6743
Description of the feature:
This series proposes the implementation of a remoteproc tee driver to
communicate with a TEE trusted application responsible for authenticating and
loading the remoteproc firmware image in an Arm secure context.
1) Principle:
The remoteproc tee driver provides services to communicate with the OP-TEE
trusted application running on the Trusted Execution Context (TEE).
The trusted application in TEE manages the remote processor lifecycle:
- authenticating and loading firmware images,
- isolating and securing the remote processor memories,
- supporting multi-firmware (e.g., TF-M + Zephyr on a Cortex-M33),
- managing the start and stop of the firmware by the TEE.
2) Format of the signed image:
Refer to:
https://github.com/OP-TEE/optee_os/blob/master/ta/remoteproc/src/remoteproc_core.c#L18-L57
3) OP-TEE trusted application API:
Refer to:
https://github.com/OP-TEE/optee_os/blob/master/ta/remoteproc/include/ta_remoteproc.h
4) OP-TEE signature script
Refer to:
https://github.com/OP-TEE/optee_os/blob/master/scripts/sign_rproc_fw.py
Example of usage:
sign_rproc_fw.py --in <fw1.elf> --in <fw2.elf> --out <signed_fw.sign> --key ${OP-TEE_PATH}/keys/default.pem
5) Impact on User space Application
No sysfs impact.the user only needs to provide the signed firmware image
instead of the ELF image.
For more information about the implementation, a presentation is available here
(note that the format of the signed image has evolved between the presentation
and the integration in OP-TEE).
https://resources.linaro.org/en/resource/6c5bGvZwUAjX56fvxthxds
Arnaud Pouliquen (4):
remoteproc: Add TEE support
dt-bindings: remoteproc: Add compatibility for TEE support
remoteproc: stm32: Create sub-functions to request shutdown and
release
remoteproc: stm32: Add support of an OP-TEE TA to load the firmware
.../bindings/remoteproc/st,stm32-rproc.yaml | 51 +-
drivers/remoteproc/Kconfig | 10 +
drivers/remoteproc/Makefile | 1 +
drivers/remoteproc/stm32_rproc.c | 144 ++++--
drivers/remoteproc/tee_remoteproc.c | 434 ++++++++++++++++++
include/linux/remoteproc.h | 4 +
include/linux/tee_remoteproc.h | 112 +++++
7 files changed, 711 insertions(+), 45 deletions(-)
create mode 100644 drivers/remoteproc/tee_remoteproc.c
create mode 100644 include/linux/tee_remoteproc.h
base-commit: 62210f7509e13a2caa7b080722a45229b8f17a0a
--
2.25.1
next reply other threads:[~2024-03-08 14:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-08 14:47 Arnaud Pouliquen [this message]
2024-03-08 14:47 ` [PATCH v4 1/4] remoteproc: Add TEE support Arnaud Pouliquen
2024-03-10 3:18 ` kernel test robot
2024-03-25 16:46 ` Mathieu Poirier
2024-03-26 19:18 ` Arnaud POULIQUEN
2024-03-27 17:07 ` Mathieu Poirier
2024-03-29 8:58 ` Arnaud POULIQUEN
2024-04-01 15:54 ` Mathieu Poirier
2024-03-08 14:47 ` [PATCH v4 2/4] dt-bindings: remoteproc: Add compatibility for " Arnaud Pouliquen
2024-03-08 14:47 ` [PATCH v4 3/4] remoteproc: stm32: Create sub-functions to request shutdown and release Arnaud Pouliquen
2024-03-25 16:48 ` Mathieu Poirier
2024-03-08 14:47 ` [PATCH v4 4/4] remoteproc: stm32: Add support of an OP-TEE TA to load the firmware Arnaud Pouliquen
2024-03-25 16:51 ` Mathieu Poirier
2024-03-26 19:31 ` Arnaud POULIQUEN
2024-03-27 17:14 ` Mathieu Poirier
2024-03-29 10:57 ` Arnaud POULIQUEN
2024-04-01 15:46 ` Mathieu Poirier
2024-04-03 7:04 ` Arnaud POULIQUEN
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