From: Nagal, Amit via TF-A <tf-a@lists.trustedfirmware.org>
Sent: 27 March 2024 14:51
To: tf-a@lists.trustedfirmware.org <tf-a@lists.trustedfirmware.org>
Subject: [TF-A] RAS exceptions TRAP at EL3

 

Hi ,

I am using TF-A tests tests-single-fault.mk to inject RAS errors on AMD Xilinx platform which is cortex a-78 armv8.2 based.

With this test , I can see RAS exceptions are getting triggered at EL2 .

I want to trap this exception at EL3 and handle RAS errors further using FFH approach.

From code , I could see fvp platform using FAULT_INJECTION_SUPPORT=1 , but from documentation it is meant from ARMv8.4 .

I am following https://www.trustedfirmware.org/docs/RAS_Tech_Forum.pdf .
Another option is RAS_ALLOW_ERR_REC_ACCESS_NS , but in the pdf , for FFH it is mentioned RAS_ALLOW_ERR_REC_ACCESS_NS should be 0.

Can I be advised what should be done to trap the RAS exception at EL3 on armv8.2 cortex a78 platform ?

Regards
Amit



 
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