Hi,
On Mon, Sep 25, 2023 at 9:26 AM Olivier Deprez Olivier.Deprez@arm.com wrote:
Hi,
Are EHF and OP-TEE (opteed) designed to work together?
AFAIK this isn't supported. @Jens Wiklander please correct if this evolved.
None that I'm aware of.
Cheers, Jens
You'd need to implement some special logic in the optee SPD to handle the case of Group1NS interrupts (perform a synchronous entry back into OP-TEE for it to perform its housekeeping before returning to the normal world).
has some "aggregated interrupts" that contain both secure and non-secure sources
By secure interrupt, do you mean Group0 interrupt?
See an earlier thread on this topic:
https://lists.trustedfirmware.org/archives/list/op-tee@lists.trustedfirmware... As I understand it this was somewhat investigated and then abandoned.
Regards, Olivier.
From: Brian Neely via TF-A tf-a@lists.trustedfirmware.org Sent: 22 September 2023 22:43 To: tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org Subject: [TF-A] EHF + OP-TEE
Hello,
Are EHF and OP-TEE (opteed) designed to work together? I'm seeing some strange behavior when NS interrupts are routed to EL3 as FIQs (due to EHF), but before I dig into it further I wanted to confirm if EHF + OP-TEE is a valid combination.
Some background: Our system, which uses OP-TEE, has some "aggregated interrupts" that contain both secure and non-secure sources, for which we wanted to use SDEI to filter and dispatch to Linux (and SDEI requires EHF).
Thanks!
-Brian
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