Caliptra - Support for VeeR EL2 with User Mode and Physical Memory Protection in Tock embedded OS

The Caliptra Root of Trust project, a collaboration between AMD, Google, Microsoft and NVIDIA within the CHIPS Alliance , is steadily heading towards its 2.0 release – an effort Antmicro is actively contributing to . They’ve recently described their implementation of User mode in the RISC-V VeeR EL2 core along with extended Physical Memory Protection, and related to this work, they’ve introduced support for VeeR EL2 with User Mode and PMP to the Tock embedded OS. The main goal of this implementation was to test the mode switching feature of the VeeR EL2 core with PMP enabled.