Back to results
US 2023/0146154 A1Published application
Secure testing mode
AssigneeAdvanced Micro Devices, Inc.
InventorsVidyashankar Viswanathan, Richard E. George, Michael Y. Chow
Life of this patent
Estimating the term…
Abstract
A technique for operating a processing device is disclosed. The method includes irreversibly activating a testing mode switch of the processing device; in response to the activating, entering a testing mode in which normal operation of the processing device is disabled; receiving software for the processing device in the testing mode; based on whether the software is verified as testing mode-signed software, executing or not executing the software.
Claims20
A method for operating a processing device, the method comprising:
- irreversibly activating a testing mode switch of the processing device;
- in response to the activating, entering a testing mode in which normal operation of the processing device is disabled;
- receiving software for the processing device in the testing mode;
- based on whether the software is verified as testing mode-signed software, executing or not executing the software.
1 more element
A system, comprising:
- a processing engine;
- and
- a secure diagnostic mode system configured to:
- irreversibly activate a testing mode switch;
- in response to the activating, enter a testing mode in which normal operation of the processing engine is disabled;
- receive software for the testing mode;
- and
- based on whether the software is verified as testing mode-signed software, causing the software to execute or preventing the software from executing.
5 more elements
A system, comprising:
- a boot loader;
- and
- a processing device, comprising:
- a processing engine;
- and
- a secure diagnostic mode system configured to:
- irreversibly activate a testing mode switch;
- in response to the activating, enter a testing mode in which normal operation of the processing engine is disabled;
- receive software for the testing mode from the boot loader;
- and
- based on whether the software is verified as testing mode-signed software, causing the software to execute or preventing the software from executing.
8 more elements
Dependencies are inferred from the claim text.