On Tue, Apr 23, 2024 at 10:22 AM Avri Altman <Avri.Altman@xxxxxxx> wrote: > > > On Tue, Apr 23, 2024 at 8:42 AM Avri Altman <Avri.Altman@xxxxxxx> 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
