公开(公告)号：US11188640B1

公开(公告)日：2021-11-30

申请号：US16110329

申请日：2018-08-23

Applicant: Advanced Micro Devices, Inc.

Inventor： Jeremy W Powell ,  David A Kaplan

IPC: G06F17/00 ,  H04L29/06 ,  G06F21/53 ,  G06F21/74 ,  G06F21/57 ,  G06F21/60

Abstract: A method includes establishing an isolated execution environment for executing a platform firmware operating mode subroutine in a platform firmware operating mode. In response to receiving an interrupt, the platform firmware operating mode subroutine is executed in the isolated execution environment. In response to detecting an attempted access of a hardware resource resulting from execution of the platform firmware operating mode subroutine, the attempted access is blocked when the attempted access violates a security policy.