Computing performance and power management with firmware performance data structure
In some embodiments, a PPM interface for a computing platform may be provided with functionality to facilitate, to an OS through the PPM interface, firmware performance data.
1. A computing platform comprising:
a memory to store firmware boot program; and
a processor to execute the firmware boot program,
wherein the memory is to further store instructions to maintain a firmware basic boot performance table that includes a header and two or more performance records, wherein respective ones of the two or more performance records include:
timer information associated with final operating system (OS) loader activity; and
data associated with starting and ending boot time information.
2. The computing platform of claim 1 , wherein:
the one or more performance records comprise a timer value logged at a beginning of a firmware image execution.
3. The computing platform of claim 1 , wherein:
the one or more performance records comprise a timer value logged immediately prior to loading an operating system (OS) boot loader into the memory.
4. The computing platform of claim 1 , wherein:
the one or more performance records comprise a timer value logged immediately prior to launching a currently loaded operating system (OS) boot loader image.
5. The computing platform of claim 1 , wherein:
the one or more performance records comprise a timer value logged at a point where an operating system (OS) loader calls an ExitBootServices function for Unified Extensible Firmware Interface (UEFI) compatible firmware.
6. The computing platform of claim 1 , wherein:
the one or more performance records comprises a timer value logged at a point immediately prior to an operating system (OS) loader gaining control back from an ExitBootServices function for Unified Extensible Firmware Interface (UEFI) compatible firmware.
7. The computing platform of claim 1 , wherein:
the memory is to further store instructions to maintain a firmware performance data table (FPDT) structure.
8. The computing platform of claim 7 , wherein:
the FPDT structure is to include a firmware basic boot performance pointer record containing a pointer to the firmware basic boot performance table.
9. The computing platform of claim 1 , wherein:
the memory comprises a memory space to store the one or more performance records; and
an Operating System (OS) is prohibited from altering the memory space.
10. An apparatus, comprising:
a computer platform having firmware including Advanced Configuration and Power Interface (ACPI) components to maintain a firmware basic boot performance data record structure that includes a header and two or more performance records, wherein respective ones of the two or more performance records include:
timer information associated with final operating system (OS) loader activity; and
data associated with starting and ending boot time information; and
a memory to store the firmware basic boot performance data record structure.
11. The apparatus of claim 10 , wherein:
the ACPI components is to maintain a firmware performance data table (FPDT) structure that is to include a record containing a pointer to the firmware basic boot performance data record structure.
12. The apparatus of claim 10 , wherein:
an Operating System (OS) is to access the firmware performance data from the firmware basic boot performance data record structure.
13. The apparatus of claim 10 , wherein:
the firmware performance data is to track one or more firmware boot parameters during a boot process.
14. The apparatus of claim 10 , further comprising:
a processor coupled to the memory.
15. Non-transitory computer-readable storage media to store instructions that, when executed by a processor, cause the processor to perform a method comprising:
storing firmware boot program in a memory;
executing the firmware boot program; and
maintaining a firmware basic boot performance table that includes a header and one two or more performance records, wherein respective ones of the two or more performance records include:
timer information associated with final operating system (OS) loader activity; and
data associated with starting and ending boot time informationwherein the header comprises a length of the firmware basic boot performance table.
16. The non-transitory computer-readable storage media of claim 15 , wherein the one or more performance records comprise:
a timer value logged at a beginning of a firmware image execution;
a timer value logged immediately prior to loading an operating system (OS) boot loader into the memory;
a timer value logged immediately prior to launching a currently loaded operating system (OS) boot loader image;
a timer value logged at a point where an operating system (OS) loader calls an ExitBootServices function for Unified Extensible Firmware Interface (UEFI) compatible firmware; and/or
a timer value logged at a point immediately prior to an operating system (OS) loader gaining control back from an ExitBootServices function for Unified Extensible Firmware Interface (UEFI) compatible firmware.
17. The non-transitory computer-readable storage media of claim 15 to store instructions that, when executed by the processor, cause the processor to perform the method comprising:
maintaining a firmware performance data table (FPDT) structure.
18. The non-transitory computer-readable storage media of claim 17 , wherein the FPDT structure is to include a firmware basic boot performance pointer record containing a pointer to the firmware basic boot performance table.