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436eeae0 |
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09-May-2023 |
Rijo Thomas <Rijo-john.Thomas@amd.com> |
tee: amdtee: Add return_origin to 'struct tee_cmd_load_ta' After TEE has completed processing of TEE_CMD_ID_LOAD_TA, set proper value in 'return_origin' argument passed by open_session() call. To do so, add 'return_origin' field to the structure tee_cmd_load_ta. The Trusted OS shall update return_origin as part of TEE processing. This change to 'struct tee_cmd_load_ta' interface requires a similar update in AMD-TEE Trusted OS's TEE_CMD_ID_LOAD_TA interface. This patch has been verified on Phoenix Birman setup. On older APUs, return_origin value will be 0. Cc: stable@vger.kernel.org Fixes: 757cc3e9ff1d ("tee: add AMD-TEE driver") Tested-by: Sourabh Das <sourabh.das@amd.com> Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com> Acked-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
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757cc3e9 |
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26-Dec-2019 |
Rijo Thomas <Rijo-john.Thomas@amd.com> |
tee: add AMD-TEE driver Adds AMD-TEE driver. * targets AMD APUs which has AMD Secure Processor with software-based Trusted Execution Environment (TEE) support * registers with TEE subsystem * defines tee_driver_ops function callbacks * kernel allocated memory is used as shared memory between normal world and secure world. * acts as REE (Rich Execution Environment) communication agent, which uses the services of AMD Secure Processor driver to submit commands for processing in TEE environment Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Tom Lendacky <thomas.lendacky@amd.com> Acked-by: Jens Wiklander <jens.wiklander@linaro.org> Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com> Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com> Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com> Reviewed-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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