Hi all,
I have a similar but different question here :)
Why not the tf-a support both smpd and tspd.
Since the vendor's teeos that has not support ff-a interface currently.
With armv8.4-sel2, is there a choice to disable scr.eel2 with origin vendor's theeos IDs, and enable scr.eel2 with new ff-a services?
It seems to need some tlb maintenance, but it seems work.
On 2020/11/23 3:27 下午, Achin Gupta via TF-A wrote:
Hi Heyi,
Happy to discuss the detail but the short answer is no.
Instead, it is possible to run an MM partition in S-EL0 under the TEE. This work is being done with OP-TEE.
From a SW architecture standpoint, it did not seem like a good idea to let EL3 run its "application" i.e. MM SP alongside a TEE which also runs its own applications. It is better to let the TEE own S-EL1 and run all applications in S-EL0 under it.
Cheers, Achin
On 23/11/2020, 05:36, "TF-A on behalf of Heyi Guo via TF-A" <tf-a-bounces@lists.trustedfirmware.org on behalf of tf-a@lists.trustedfirmware.org> wrote:
Hi All, On some platforms there may be requirements to run both TEE and SPM_MM instances, such as providing TEE services on server platforms. Do TF-A support this scenario? If it doesn't, do it make sense to add such support? Thanks, Heyi -- TF-A mailing list TF-A@lists.trustedfirmware.org https://lists.trustedfirmware.org/mailman/listinfo/tf-a