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[RFC] SCMI PTA with OCALL #90

Closed etienne-lms closed 1 year ago

etienne-lms commented 3 years ago

Relates to https://github.com/OP-TEE/optee_os/pull/4535.

These changes build on top of OCALL implementation from @HernanGatta in https://github.com/linaro-swg/linux/pull/72.

These changes implement an SCMI transport using an identified SCMI PTA exposed by OP-TEE. The 2 first commits implement an SCMI transport driver standard service, interfacing SCMI PTA from https://github.com/OP-TEE/optee_os/pull/4533. Last commit leverage OCALL support to provision a secure thread per SCMI communication channel, using SCMI PTA Ocall support from https://github.com/OP-TEE/optee_os/pull/4535.

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etienne-lms commented 1 year ago

Time to close this P-R. Another way to provision TEE thread is proposed in https://github.com/OP-TEE/optee_os/pull/5789.