linux-kernel - Re: [PATCH 2/2] tpm_ftpm_tee: register driver on tee bus

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Message-ID: <CAD8XO3YBUT0tOz+zZMT+wsXG_HgsEm+kOe9tqjdgxCUKdMv9qQ@mail.gmail.com>
Date:   Tue, 19 May 2020 10:09:54 +0300
From:   Maxim Uvarov <maxim.uvarov@...aro.org>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, tee-dev@...ts.linaro.org,
        peterhuewe@....de, jgg@...pe.ca, gregkh@...uxfoundation.org,
        Jens Wiklander <jens.wiklander@...aro.org>,
        linux-integrity@...r.kernel.org, Arnd Bergmann <arnd@...aro.org>,
        Sumit Garg <sumit.garg@...aro.org>
Subject: Re: [PATCH 2/2] tpm_ftpm_tee: register driver on tee bus

On Mon, 18 May 2020 at 22:38, Jarkko Sakkinen
<jarkko.sakkinen@...ux.intel.com> wrote:
>
> On Mon, 2020-05-18 at 16:34 +0300, Maxim Uvarov wrote:
> > Register driver on tee bus. module tee registers bus,
> > and module optee calls optee_enumerate_devices() to scan
> > all devices on the bus. This TA can be Early TA's ( can be
> > compiled into optee-os). In that case it will be on optee
> > bus before linux booting. Also optee-suplicant application
> > is needed to be loaded between optee module and ftpm module to
> > to maintain functionality for ftpm driver.
>
> Please use proper casing in the commit message e.g. tee to TEE
> and so forth.

Ok. Will do in v2.

> What is TA?

TA there is Trusted Application. I.e. application which runs in a
secure world (arm trust zone.).
This also fixes the Microsoft ftpm driver which has a corresponding
application for secure world.

Maxim.

>
> /Jarkko
>