Hewlett-packard Development Company, L.p.

Compaq Computer Corporation, Inc.

Compaq Information Technologies Group, L.p.

Hewlett Packard Enterprise Development LP

Telefonaktiebolaget Lm Ericsson (publ)

Louis B Hobson

Mark A Piwonka

Michael R Durham

Randall L Hess

Mark D Tupa

Jeffrey D Kane

Robert S Wright

Christopher Rijken

Joshua N McMahon

Robert C Brooks

Manuel Novoa

Gregory P Ziarnik

Wael M Ibrahim

Robert J Volentine

Bernard D Desselle

Jose Sancho-Dominguez

John D Battles

Christine G Cash

Vicki L Carruthers

Hakeem Mohamed

Mark Colbert

Examples herein disclose determining whether a computing device should implement a zero watt state according to an engagement of a button. The examples disconnect a power source to the computing device based upon the determination the computing device should implement the zero watt state.

Determination of a zero watt state for implementation

Various examples herein disclose setting a cooling fan to an update operating speed that is higher than a normal operating speed in response to an indication that a firmware update is being executed. Such examples also disclose setting the cooling fan to a dynamic operating speed, which is adjusted in accordance with the firmware update, in response to an indication that the firmware update has completed.

Cooling fan speed in accordance with a firmware update

Example embodiments disclosed herein relate to implementing a power down state in a computing device. A sleep command is issued to place a computing device in a sleep state in response to receipt of a power off command at the computing device. Content of memory of the computing device is written to non-volatile storage of the computing device and the computing device is placed in a power off state.

Implementing a power off state in a computing device

A computing machine to power a memory to retain a process state of the computing machine if the computing machine is in a sleep state and transfer the process state from the memory to a non-volatile storage device, where the computing machine remains in the sleep state as the process state is transferred from the memory to the non-volatile storage device.

Process state of a computing machine

A first controller can provide system state information and a second controller can receive the system state information. The second controller can be programmed to control the state of a component. The state of the component can be based on information programmed in the second controller and the system state information. The component can include an off state and an operating state indicated by a signal from the second controller.

Controller

An electronic device () includes a network interface controller () and an input/output controller () having a link layer. A portion of the input/output controller is configured to be powered off during a lower power mode of the electronic device, where the first portion contains the link layer. Wakeup logic () separate from the input/output controller receives a wake indication from the network interface controller in response to the physical layer receiving a wake message on the network while the electronic device is in the lower power mode. The wakeup logic activates an indication to awaken the electronic device from the lower power mode in response to the wake indication from the network interface controller.

Providing wakeup logic to awaken an electronic device from a lower power mode

A computer system is provided, the computer system having a processor and a system memory coupled to the processor. The computer system also includes a Basic Input/Output System (BIOS) in communication with the processor. The BIOS selectively scrubs the system memory during a shutdown process of the computer system.

Methods and systems to selectively scrub a system memory

Systems and methods of determining a trust level from system management mode are disclosed. One such method includes: responsive to a system management mode interrupt (SMI), determining a trust level associated with code invoking the SMI; and responsive to determining that the trust level is untrusted, granting or denying a request made by the code invoking the SMI based at least in part on a type of the request.

Systems and methods of determining a trust level from system management mode

Systems and methods of securely updating BIOS are disclosed. One such system comprises a reprogrammable memory, a first and a second register, and comparison logic. The reprogrammable memory comprises a first portion and a protect input. The protect input is configured to disallow writes to at least the first portion when the memory protect input is at a first level, and to allow writes to at least the first portion when the protect input is at a second level; The comparison logic is configured to drive a comparison output to a third level responsive to the first and second registers having equal values, and to drive the comparison output to a fourth level responsive to the first and second registers having different values. The comparison output is electrically coupled to the memory protect input.

Apparatus for determining during a power-on sequence, a value to be written to a first register in a secure area and the same value to a second register in non-secure area, which during a protected mode, the value is compared such that if it is equal, enabling writing to a memory

A method and system of executing stack-based memory reference code. At least some of the illustrated embodiments are methods comprising waking a computer system from a reduced power operational state in which a memory controller loses at least some configuration information, executing memory reference code that utilizes a stack (wherein the memory reference code configures the main memory controller), and passing control of the computer system to an operating system. The time between executing a first instruction after waking the computer system and passing control to the operating system takes less than 200 milliseconds.

Method and system of executing stack-based memory reference code

A coordinator in a computer system receives a request from one of a plurality of operating systems (that coexist in the computer system) to invoke a service of a management routine in the computer system. The plurality of operating systems execute in respective virtual machines of the computer system. The coordinator processes the received request to invoke the service of the management routine to prevent a conflict from occurring with respect to at least another one of the plurality of operating systems.

Managing requests of operating systems executing in virtual machines

In one embodiment a method comprises collecting device configuration information during an initialization process in a computing device, storing the device configuration in a memory buffer, and using the device configuration information to restore the computing device from a low-power mode to an operational mode.

Growing community of inventors

Tomball, TX, United States of America

Louis B Hobson