OP-TEE June 2024

op-tee@lists.trustedfirmware.org

12 participants
13 discussions

[PATCH v6 0/5] Introduction of a remoteproc tee to load signed firmware

by Arnaud Pouliquen

Main updates from the previous version [1][2]: ------------------------------------------ 1) Rework resource table management - Rework tee_rproc_parse_fw to temporary map the resource table address to create a cached_table (similar to what is done in rproc_elf_load_rsc_table()). - Rename tee_rproc_get_loaded_rsc_table to tee_rproc_find_loaded_rsc_table - Introduce rproc_pa_to_va() allowing to translate the resource table physical address to virtual address based on remoteproc carveouts. 2) Merge the 2 "st,stm32-rproc.yaml" bindings patch in one As the st,rproc-id" is linked to the introduction of the "st,stm32mp1-m4-tee" compatible, merge following patches to address Krzysztof concern. - [PATCH v5 2/7] dt-bindings: remoteproc: Add compatibility for TEE support - [PATCH v5 3/7] dt-bindings: remoteproc: Add processor identifier property More details on updates are listed in commits messages. [1] https://lore.kernel.org/lkml/Zlil4YSjHxb0FRgf@p14s/T/ [2] https://lore.kernel.org/lkml/20240521122458.3517054-1-arnaud.pouliquen@foss… base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 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… 3) OP-TEE trusted application API: Refer to: https://github.com/OP-TEE/optee_os/blob/master/ta/remoteproc/include/ta_rem… 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 (5): remoteproc: core: Introduce rproc_pa_to_va helper 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 | 58 ++- drivers/remoteproc/Kconfig | 10 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/remoteproc_core.c | 74 ++- drivers/remoteproc/stm32_rproc.c | 147 ++++-- drivers/remoteproc/tee_remoteproc.c | 451 ++++++++++++++++++ include/linux/remoteproc.h | 7 + include/linux/tee_remoteproc.h | 99 ++++ 8 files changed, 801 insertions(+), 46 deletions(-) create mode 100644 drivers/remoteproc/tee_remoteproc.c create mode 100644 include/linux/tee_remoteproc.h base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 -- 2.25.1

1 year, 4 months

about Platforms supported

by 李涛

hi. could you pls tell me Which server manufacturer supports op-tee(and provide machine type)?thanks. litao(a)sursen.net

1 year, 4 months

[RESEND PATCH v5 0/7] Introduction of a remoteproc tee to load signed firmware

by Arnaud Pouliquen

Main updates from the previous version [1]: ------------------------------------------ 1) use proc->table_ptr as unique reference to point to the resource table --> update remoteproc_core.c to implement management of the resource table base on rproc->rproc->tee_interface new field: - on start get the resource table address from TEE remoteproc instead of finding it in firmware (ops choice to confirm) - on stop unmap the resource table before updating the proc->table_ptr pointer. 2) retrieve the TEE rproc Identifier from the device tree instead of hardcoding it --> Add a new "st,proc-id" property in device tree. More details on updates are listed in commits messages [1] https://lore.kernel.org/linux-arm-kernel/20240115135249.296822-1-arnaud.pou… base-commit: c8d8f841e95bcc07ac8c5621fc171a24f1fd5cdb 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… 3) OP-TEE trusted application API: Refer to: https://github.com/OP-TEE/optee_os/blob/master/ta/remoteproc/include/ta_rem… 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 (7): remoteproc: Add TEE support dt-bindings: remoteproc: Add compatibility for TEE support dt-bindings: remoteproc: Add processor identifier property remoteproc: core introduce rproc_set_rsc_table_on_start function remoteproc: core: support of the tee interface 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 | 58 ++- drivers/remoteproc/Kconfig | 10 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/remoteproc_core.c | 135 +++--- drivers/remoteproc/stm32_rproc.c | 149 ++++-- drivers/remoteproc/tee_remoteproc.c | 429 ++++++++++++++++++ include/linux/remoteproc.h | 4 + include/linux/tee_remoteproc.h | 99 ++++ 8 files changed, 784 insertions(+), 101 deletions(-) create mode 100644 drivers/remoteproc/tee_remoteproc.c create mode 100644 include/linux/tee_remoteproc.h -- 2.25.1

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OP-TEE June 2024