Penglai Enclave Hardware Extensions

Penglai-Enclave is made scalable and secure with new hardware extensions.

Already implemented in Qemu

• sPMP (smode Physical Memory Protection)

sPMP is a proposal to RISC-V TEE group, Proposal_of_sPMP__S-mode_PMP_for_RISC-V.pdf is the detailed specification.

Implemented in FPGA

• PT area
• Overlay Page table
• On-demand cache line binding

In comming HW features

• memory encryption engine
• memory integrity