Method for processing UEFI protocols and system therefor
A Unified Extensible Firmware Interface protocol installer utilizes and modifies a list of global unique identifiers corresponding to Unified Extensible Firmware Interface protocols to determine whether to install a UEFI protocol.
1. A computer implemented method comprising:
receiving a request to install a first Unified Extensible Firmware Interface (UEFI) protocol at a UEFI load image function during execution of firmware of an information handling system;
initiating a UEFI install protocol function in response to receiving the request; and
in response to determining that a global unique identifier (GUID) associated with the first UEFI protocol is not included at a protocol GUID list:
installing the first UEFI protocol; and
appending the GUID associated with the first UEFI protocol to the protocol GUID list.
2. The method of claim 1 , further comprising:
in response to determining that the GUID is included at the protocol GUID list, preventing installation of the first UEFI protocol.
3. The method of claim 2 , further comprising:
appending a message to a log, the message identifying that the request to install the first UEFI protocol was prevented.
4. The method of claim 2 , further comprising:
providing a message to a device associated with the request to install the first UEFI protocol, the message identifying that the request to install the first UEFI protocol was prevented.
5. The method of claim 1 , further comprising:
receiving a request to install a second UEFI protocol at the information handling system; and
installing the second UEFI protocol without considering the protocol GUID list in response to determining a trusted driver execution environment phase has not completed.
6. The method of claim 1 , wherein the first UEFI protocol is associated with a UEFI image.
7. The method of claim 1 , wherein the UEFI protocol provides functions to access a device.
8. The method of claim 1 , further comprising:
storing a hash corresponding to the protocol GUID list at a platform configuration register included at a trusted platform module.
9. A computer implemented method comprising:
receiving a first request to install a first Unified Extensible Firmware Interface (UEFI) protocol at a UEFI load image function during execution of firmware of an information handling system;
initiating a UEFI install protocol function in response to receiving the request, and
in response to determining that a global unique identifier (GUID) associated with the first UEFI protocol is included at a protocol GUID list, preventing installation of the first UEFI protocol.
10. The method of claim 9 , further comprising preventing installation of the first UEFI protocol in response to determining a trusted driver execution phase has completed.
11. The method of claim 10 , further comprising determining the trusted driver execution phase has completed based on information stored at a platform configuration register.
12. The method of claim 11 , wherein the platform configuration register is included at a trusted platform module.
13. The method of claim 9 , further comprising:
receiving a request to install a second UEFI protocol at the information handling system; and
allowing installation of the second UEFI protocol in response to determining a trusted driver execution phase has not completed.
14. The method of claim 9 , further comprising:
in response to determining that the GUID is not included at a protocol GUID list:
installing the first UEFI protocol; and
appending the GUID associated with the first UEFI protocol to the protocol GUID list.
15. An information handling system comprising:
a memory; and
computer-readable instructions stored at the memory and executable by a microprocessor to:
receive a request to install a first Unified Extensible Firmware Interface (UEFI) protocol at a UEFI load image function during execution of firmware of an information handling system;
initiate a UEFI install protocol function in response to receiving the request; and
in response to determining that a global unique identifier (GUID) associated with the first UEFI protocol is not included at a protocol GUID list:
install the first UEFI protocol; and
append the GUID associated with the first UEFI protocol to the protocol GUID list.
16. The information handling system of claim 15 , wherein the instructions are further to:
in response to determining that the GUID associated with the first UEFI protocol is included at the protocol GUID list, prevent installation of the first UEFI protocol.
17. The information handling system of claim 16 , wherein the instructions are further to:
append a message to a log, the message identifying that the request to install the first UEFI protocol was prevented.
18. The information handling system of claim 16 , wherein the instructions are further to:
provide a message to a device associated with the request to install the first UEFI protocol, the message identifying that the request to install the first UEFI protocol was prevented.
19. The information handling system of claim 15 , wherein the first UEFI protocol is associated with a UEFI image.
20. The information handling system of claim 15 , wherein the instructions are further to:
receive a request to install a second UEFI protocol at the information handling system; and
install the second UEFI protocol without considering the protocol GUID list in response to determining that a trusted driver execution environment phase has not completed.