Hi Poppy,

By “call secure services directly” I guess you mean function call?

That is forbidden.

Secure services can be only called by PSA Client APIs (psa_connect/psa_call/psa_close) or Partition provided APIs (for example psa_ps_set).

As Anton mentioned, platform folder actually provide HW level support to Secure Partitions and Framework (SPM).

Could you provide more details of you use case of calling Secure Services from platform folder?

Best Regards,

Kevin

From: TF-M <tf-m-bounces@lists.trustedfirmware.org> On Behalf Of Anton Komlev via TF-M
Sent: Tuesday, July 6, 2021 8:31 PM
To: tf-m@lists.trustedfirmware.org
Cc: nd <nd@arm.com>
Subject: Re: [TF-M] Whether the codes in platform folder of tf-m project can be allowed to call secure services in secure_fw folder?

Hi Poppy,

Platform folder represents a HW integration layer.

What kind of use case you have in mind to call the secure services from there?

Thanks,

Anton

From: TF-M <tf-m-bounces@lists.trustedfirmware.org> On Behalf Of Edward Yang via TF-M
Sent: Tuesday, July 6, 2021 9:30 AM
To: tf-m@lists.trustedfirmware.org; nd <nd@arm.com>
Subject: [TF-M] Whether the codes in platform folder of tf-m project can be allowed to call secure services in secure_fw folder?

Hi experts,

The tf-m project includes secure_fw and paltform these two folders, I want to know whether the codes in platform folder are allowed to call secure services directly?


Best Regards,
Poppy Wu

Macronix Microelectronics (Suzhou) Co.,Ltd

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