From: Jens Wiklander <jens.wiklander@linaro.org>
To: Avri Altman <Avri.Altman@wdc.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
"op-tee@lists.trustedfirmware.org"
<op-tee@lists.trustedfirmware.org>,
Shyam Saini <shyamsaini@linux.microsoft.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
Jerome Forissier <jerome.forissier@linaro.org>,
Sumit Garg <sumit.garg@linaro.org>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
Bart Van Assche <bvanassche@acm.org>,
Randy Dunlap <rdunlap@infradead.org>,
Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v5 0/3] Replay Protected Memory Block (RPMB) subsystem
Date: Tue, 23 Apr 2024 10:44:09 +0200 [thread overview]
Message-ID: <CAHUa44F8J6byatNpg9W6Y2yinJw_RKEtLBKBSDxGkz0yx4Zi3A@mail.gmail.com> (raw)
In-Reply-To: <DM6PR04MB6575E485C2CDB40CC79A3081FC112@DM6PR04MB6575.namprd04.prod.outlook.com>
On Tue, Apr 23, 2024 at 10:22 AM Avri Altman <Avri.Altman@wdc.com> wrote:
>
> > On Tue, Apr 23, 2024 at 8:42 AM Avri Altman <Avri.Altman@wdc.com> wrote:
> > >
> > > > The OP-TEE driver finds the correct RPMB device to interact with by
> > > > iterating over available devices until one is found with a
> > > > programmed authentication matching the one OP-TEE is using. This
> > > > enables coexisting users of other RPMBs since the owner can be
> > > > determined by who knows the authentication key.
> > > Devices in plural?
> > > I am unaware of any board with multi eMMC devices soldered.
> > > Can you refer me to such a platform?
> >
> > I'm testing with a Hikey960 (HiSilicon Kirin 620)
> > https://www.96boards.org/product/hikey
> > It has one soldered eMMC and one removable eMMC.
> I used to have that board but with a UFS2.1 version, so I can't really tell.
> https://github.com/96boards/documentation/blob/master/consumer/hikey/hikey620/hardware-docs/hardware-user-manual.md#storage
> indicating only a single eMMC device and a SD.
That's what I'm testing with, the kernel finds two RPMBs with
different CIDs. I'm running my tests with the removable one.
> Either way, AFAIK there are no production designs that make use of more than a single embedded flash storage.
> This goes for both eMMC and UFS.
OK
Thanks,
Jens
prev parent reply other threads:[~2024-04-23 8:44 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 9:19 [PATCH v5 0/3] Replay Protected Memory Block (RPMB) subsystem Jens Wiklander
2024-04-22 9:19 ` [PATCH v5 1/3] rpmb: add " Jens Wiklander
2024-04-25 8:37 ` Manuel Traut
2024-04-26 13:08 ` Jens Wiklander
2024-04-22 9:19 ` [PATCH v5 2/3] mmc: block: register RPMB partition with the RPMB subsystem Jens Wiklander
2024-04-25 8:42 ` Manuel Traut
2024-04-26 13:24 ` Jens Wiklander
2024-04-29 9:40 ` Manuel Traut
2024-04-29 10:08 ` Jens Wiklander
2024-04-29 10:35 ` Manuel Traut
2024-04-29 10:45 ` Jens Wiklander
2024-04-29 11:13 ` Jens Wiklander
2024-04-29 13:13 ` Manuel Traut
2024-05-02 9:53 ` Jens Wiklander
2024-05-03 9:16 ` Manuel Traut
2024-04-29 19:36 ` Avri Altman
2024-05-07 9:21 ` Jens Wiklander
2024-04-22 9:19 ` [PATCH v5 3/3] optee: probe RPMB device using " Jens Wiklander
2024-04-25 9:13 ` Manuel Traut
2024-04-26 13:40 ` Jens Wiklander
2024-05-03 14:37 ` Manuel Traut
2024-05-06 8:34 ` Jens Wiklander
2024-04-23 6:42 ` [PATCH v5 0/3] Replay Protected Memory Block (RPMB) subsystem Avri Altman
2024-04-23 7:29 ` Jens Wiklander
2024-04-23 8:22 ` Avri Altman
2024-04-23 8:44 ` Jens Wiklander [this message]
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