[seL4] Android TEE OS with seL4? (was: Is the L4-embedded microkernel here means seL4)

On Mon, Apr 18, 2016 at 02:08:12PM +0800, XilongPei wrote: You need to take a wider view of what Trusty is, how it fits into Android, and what it provides. Trusty is a "TEE", the OS that runs in the secure world on ARM TrustZone-compatible platforms. See the recent thread about TrustZone and seL4 in general: http://sel4.systems/pipermail/devel/2016-March/000746.html In particular, Trusty is an application on the LK kernel. seL4 here would replace LK, not Trusty. Trusty itself seemingly only provides IPC between "secure" apps and non-"secure" apps (including processes in Linux via virtio and SMCs). To replace Trusty you'd need to implement a Trusty-compatible ABI, convince a bootloader to load seL4 as the TEE OS, and do the appropriate initialization so that the existing Linux driver and apps work. The kernel might need modification to support handling SMCs. As for the benefits, see the FAQ: https://wiki.sel4.systems/FrequentlyAskedQuestions#What_is_formal_verificat… and make your own opinion after inspecting the existing Trusty apps and considering possible system designs. -- cmr +610481782084 http://octayn.net/