Patents by Inventor Jonathan Mark Lutz

Jonathan Mark Lutz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Technology for controlling access to processor debug features
    Patent number: 11734457
    Abstract: A processor that was manufactured by a manufacturer comprises privileged debug operational circuitry, a debug restriction fuse, a credential store, a credential of the manufacturer in the credential store, and debug control circuitry. The debug restriction fuse is a one-time programmable fuse. The debug control circuitry is to automatically restrict access to the privileged debug operational circuitry, based on the debug restriction fuse. The processor may also include public debug operational circuitry, a prevent-unauthorized-debug (PUD) fuse, and an undo-PUD fuse. When the PUD fuse is set and the undo-PUD fuse is clear, the debug control circuitry may respond to an attempt by a debugger to use the public debug operational circuitry by determining whether the debugger is authorized, disallowing access if the debugger is not authorized, and allowing access if the debugger is authorized. Other embodiments are described and claimed.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: August 22, 2023
    Assignee: Intel Corporation
    Inventors: Neel Piyush Shah, Enrico David Carrieri, Aditya Katragada, Jonathan Mark Lutz, Michael Carl Neve de Mevergnies, Bhavana Prabhakar
  • Technology For Controlling Access To Processor Debug Features
    Publication number: 20210192085
    Abstract: A processor that was manufactured by a manufacturer comprises privileged debug operational circuitry, a debug restriction fuse, a credential store, a credential of the manufacturer in the credential store, and debug control circuitry. The debug restriction fuse is a one-time programmable fuse. The debug control circuitry is to automatically restrict access to the privileged debug operational circuitry, based on the debug restriction fuse. The processor may also include public debug operational circuitry, a prevent-unauthorized-debug (PUD) fuse, and an undo-PUD fuse. When the PUD fuse is set and the undo-PUD fuse is clear, the debug control circuitry may respond to an attempt by a debugger to use the public debug operational circuitry by determining whether the debugger is authorized, disallowing access if the debugger is not authorized, and allowing access if the debugger is authorized. Other embodiments are described and claimed.
    Type: Application
    Filed: December 23, 2019
    Publication date: June 24, 2021
    Inventors: Neel Piyush Shah, Enrico David Carrieri, Aditya Katragada, Jonathan Mark Lutz, Michael Carl Neve de Mevergnies, Bhavana Prabhakar