Platform configuration management using a basic input/output system (BIOS)
View Patent ↗Methods and systems for platform configuration management may use a platform configuration register (PCR) stored on a trusted platform module (TPM) included with an information handling system. A basic input/output system (BIOS) may include instructions to generate a first PCR value based on BIOS settings while a user is operating the BIOS. When the first PCR value indicates a change from a previous PCR value stored in the PCR, an alert may be displayed to the user and sent to a network administrator. The BIOS may display an indication of a mapping of BIOS settings to the first PCR value.
1. A method for identifying a change in platform configuration register values selected by a user via BIOS user interface comprising:
accessing a mapping of basic input/output system (BIOS) settings to a platform configuration register (PCR) for an information handling system including a trusted platform module (TPM), wherein the BIOS settings are accessible for selection by a user of the information handling system from a BIOS user interface;
during operation of the BIOS user interface by the user and based on the BIOS settings and the mapping, generating a first PCR value indicative of BIOS settings currently selected by the user, the first PCR value corresponding to the PCR;
when the first PCR value indicates a change from a previous PCR value stored in the PCR, displaying a first alert in the BIOS user interface, the first alert indicating that the BIOS settings have changed the first PCR value; and
when the first alert is displayed, sending a second alert via a network connection to a network administrator for the information handling system to perform an action, the second alert including the first PCR value.
2. The method of claim 1 , further comprising:
when the first alert is displayed, displaying in the BIOS user interface an indication of which BIOS settings have resulted in the change to the first PCR value.
3. The method of claim 2 , further comprising:
when the first alert is displayed, displaying in the BIOS user interface user instructions for restoring the BIOS to correspond to the previous PCR value.
4. The method of claim 1 , wherein the action is to prevent lockout of the information handling system.
5. The method of claim 1 , further comprising:
displaying, in the BIOS user interface, an indication of the mapping of the BIOS settings to the PCR.
6. The method of claim 1 , wherein the PCR is a PCR 1 corresponding to a host platform configuration.
7. An information handling system for identifying a change in a platform configuration register values selected by a user via BIOS user interface comprising:
a processor subsystem having access to a basic input/output system (BIOS), wherein the BIOS includes BIOS instructions executable by the processor subsystem to:
generate a BIOS user interface for enabling a user to access and select BIOS settings for the BIOS;
access a mapping of the BIOS settings to a platform configuration register (PCR) for an information handling system including a trusted platform module (TPM);
during operation of the BIOS user interface by the user and based on the BIOS settings and the mapping, generate a first PCR value indicative of BIOS settings currently selected by the user, the first PCR value corresponding to the PCR;
when the first PCR value indicates a change from a previous PCR value stored in the PCR, display a first alert in the BIOS user interface, the first alert indicating that the BIOS settings have changed the first PCR value; and
when the first alert is displayed, send a second alert via a network connection to a network administrator for the information handling system to perform an action, the second alert including the first PCR value.
8. The information handling system of claim 7 , further comprising BIOS instructions to:
when the first alert is displayed, display in the BIOS user interface an indication of which BIOS settings have resulted in the change to the first PCR value.
9. The information handling system of claim 8 , further comprising BIOS instructions to:
when the first alert is displayed, display in the BIOS user interface user instructions for restoring the BIOS to correspond to the previous PCR value.
10. The information handling system of claim 7 , wherein the action is to prevent lockout of the information handling system.
11. The information handling system of claim 7 , further comprising BIOS instructions to:
display, in the BIOS user interface, an indication of the mapping of the BIOS settings to the PCR.
12. The information handling system of claim 7 , wherein the PCR is a PCR 1 corresponding to a host platform configuration.
13. An article of manufacture comprising a non-transitory computer-readable medium storing instructions, the instructions representing a basic input/output system (BIOS) that identifies a change in a platform configuration register values selected by a user via BIOS user interface, that, when executed by a processor of an information handling system, cause the processor to:
generate a BIOS user interface for enabling a user to access and select BIOS settings for the BIOS;
access a mapping of the BIOS settings to a platform configuration register (PCR) for an information handling system including a trusted platform module (TPM);
during operation of the BIOS user interface by the user and based on the BIOS settings and the mapping, generate a first PCR value indicative of BIOS settings currently selected by the user, the first PCR value corresponding to the PCR;
when the first PCR value indicates a change from a previous PCR value stored in the PCR, display a first alert in the BIOS user interface, the first alert indicating that the BIOS settings have changed the first PCR value; and
when the first alert is displayed, send a second alert via a network connection to a network administrator for the information handling system to perform an action, the second alert including the first PCR value.
14. The article of manufacture of claim 13 , further comprising BIOS instructions to:
when the first alert is displayed, display in the BIOS user interface an indication of which BIOS settings have resulted in the change to the first PCR value.
15. The information handling system of claim 14 , further comprising BIOS instructions to:
when the first alert is displayed, display in the BIOS user interface user instructions for restoring the BIOS to correspond to the previous PCR value.
16. The article of manufacture of claim 13 , wherein the action is to prevent lockout of the information handling system.
17. The article of manufacture of claim 13 , further comprising BIOS instructions to:
display, in the BIOS user interface, an indication of the mapping of the BIOS settings to the PCR.
18. The article of manufacture of claim 13 , wherein the PCR is a PCR 1 corresponding to a host platform configuration.