This is a prototype loosely based on the SPCI Alpha and SPRT pre-alpha specifications. Any interface / platform API introduced for this is subject to change as it evolves. Cactus is meant to be the main test Secure Partition. It is the one meant to have most of the tests that a Secure Partition has to do. Ivy is meant to be more minimalistic. In the future, Cactus may be modified to be a S-EL1 partition while Ivy will remain as a S-EL0 partition.