Processor specific BIOS interface for power management

Details Processor specific BIOS interface for power management Processor specific BIOS interface for power management

2006-01-09

2009-08-18

Suryawanshi, Suresh K (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S322000

Reexamination Certificate

active

07577860

ABSTRACT:
Processor power management capabilities that enable an operating system kernel to interact with a plurality of ACPI-compliant computing devices to manage processor power using a generic processor description. Specifications of power processor management capabilities of processor types are stored in data structures, i.e., objects. Each object contains a control value field and a control mask field. The kernel loads a generic processor driver and objects for each processor type enabling the kernel to respond to power management events such as processor utilization and processor operating temperature events. In response to a power management event, the kernel calculates a desired processor performance state; sets bits in the control mask field to describe the desired processor performance state; and passes the control mask to the generic processor driver which controls the processor. Responses to power management events include adjusting processor voltage and/or adjusting processor frequency.

REFERENCES:
patent: 6691236 (2004-02-01), Atkinson
patent: 6845456 (2005-01-01), Menezes et al.
patent: 6889332 (2005-05-01), Helms et al.
patent: 7020786 (2006-03-01), Vyssotski et al.
patent: 2006/0129852 (2006-06-01), Bonola et al.

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