About
The domain context component in OpenSBI provides basic CPU context management routines for existing OpenSBI domain. The context component was initially designed to facilitate the suspension and resumption of domains, enabling secure domains to efficiently share CPU resources, and allowing the UEFI Secure Variable or TEE service to run within it.
Project Scope and Timelines
The reference architecture shown below illustrates the scenario of employing enhanced secure domains to support runtime services, with the opensbi context providing synchronous context switching when a service is called.
- Context switch support for standalonemm
- Context switch support for TEE (like OP-TEE)
Components and Repos.
Based on OpenSBI v1.4
Stakeholders and Partners
- RISE
- Intel: Yong Li <yong.li@intel.com>
- External
- IPADS: Erhu Feng, Qingyu Shang
- StarFive: Cheehong Ang <cheehong.ang@starfivetech.com>,John Chew <yuinyee.chew@starfivetech.com>
Dependencies
None,
Measure of Success
Code upstream to OpenSBI
RISE Requirements
None,
Status
Updates
v4 patch in review, also verified patch in Andes's OPTEE PoC
Verified the patch can work with OP-TEE
https://github.com/yli147/opensbi/tree/dev-rpxy-optee-v3
https://github.com/yli147/optee_os/tree/dev-rpxy-optee-v3