Failure to open ELE HSM session in OP-TEE / ELE FW API guide

[gpoulios]

Hello,

I'm trying to use the ELE keystore API in iMX93 EVK's OP-TEE but imx_ele_session_open() / ELE_CMD_SESSION_OPEN fails with HSM_NOT_READY_RATING. Does anybody have any hints on why ELE might not be ready to open sessions?

RM00284 does not mention anything about it, and in its example, as well as in the test code of the imx-secure-enclave repo, hsm_open_session() appears to be the very first call to ELE (which is what I'm also trying to do).

RM00284 also makes a reference to a "ELE FW API guide". Is this document accessible somehow? If not, is there anything else I can refer to?

Thank you.

[Harvey021 · Accepted solution]

Hello

The ELE FW Guide is under NDA. Send you guide for how to apply for that.

The fails related to "Services have not been initialized" - SAB Init (0x17). 

More details from the ELE FW Guide.

Regards

Harvey