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/hikey62... indicating only a single eMMC device and a SD.
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.
Thanks, Avri
Cheers, Jens