I know that EPC means “Enclave Page Cache” in the intel SGX context, so this variable may be related to these pages size/attributes, but it is actually a really large variable and I don’t know how it is handled. I want to know what offsets inside this variable are related to what configurations changes in the platform
There are also other UEFI variables I don’t understand what they are used for and I want to know more about them:
-SaPegData
-OfflineUniqueIDEKPubCRC
-OfflineUniqueIDEKPub
-SetUpdateCountVar
-MonotonicCounter (why would UEFI need a monotonic counter variable)
-UnlockID
-UnlockIDCopy
-SIO_DEV_STATUS_VAR
I would really appreciate any small contribution in this thread.