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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Language applications for UEFI BIOSLeara, William Daniel 06 October 2014 (has links)
The Unified Extensible Firmware Interface (UEFI) is the industry-standard Basic Input/Output System (BIOS) firmware specification used by modern desktop, portable, and server computers, and is increasingly being ported to today's new mobile form factors as well. UEFI is firmware responsible for bootstrapping the hardware, turning control over to an operating system loader, and then providing runtime services to the operating system. ANTLR (ANother Tool for Language Recognition) is a lexer-parser generator for reading, processing, executing, and translating structured text and binary files. It supersedes older technologies such as lex/yacc or flex/bison and is widely used to build languages and programming tools. ANTLR accepts a provided grammar and generates a parser that can build and walk parse trees. This report studies UEFI BIOS and compiler theory and demonstrates ways compiler theory can be leveraged to solve problems in the UEFI BIOS domain. Specifically, this report uses ANTLR to implement two language applications aimed at furthering the development of UEFI BIOS implementations. They are: 1. A software complexity analysis application for UEFI created that leverages ANTLR's standard general-purpose C language grammar. The complexity analysis application uses general-purpose and domain-specific measures to give a complexity score to UEFI BIOS modules. 2. An ANTLR grammar created for the VFR domain-specific language, and a sample application which puts the grammar to use. VFR is a language describing visual elements on a display; the sample application creates an HTML preview of VFR code without requiring a developer to build and flash a BIOS image on a target machine to see its graphical layout. / text
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Microprocessor power management and a stand-alone benchmarking application for Android based platformsYeager, Hans L. 19 January 2012 (has links)
Components used in mobile hand-held devices (smart phones and tablets) vary greatly in performance and power consumption. The microprocessors used in these devices also have vastly different capabilities and manufacturing limitations leading to significant variation effects. Battery life is a significant concern to the end users of these products. A stand-alone Android application capable of benchmarking a device's performance and power consumption is introduced. The application does not require the end user to have any analytic equipment or to have a technical background. This enables individual end users to better understand their particular device's performance and battery life interaction. They may also use the application to determine if their device's performance or battery life has degraded over time. Data is also uploaded to a central location so that devices can be compared against each other. The benchmarking application is capable of resolving variation effects caused by device, environmental changes and power management actions. This application demonstrates the feasibility of creating a low cost ecosystem where thousands of devices can be quantitatively compared. / text
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OpenBSD Hardware Sensors — Environmental Monitoring and Fan ControlMurenin, Constantine Aleksandrovich 18 May 2010 (has links)
This thesis discusses the motivation, origin, history, design guidelines, API, the device drivers and userland utilities of the hardware sensors framework available in OpenBSD. The framework spans multiple utilities in the base system and the ports tree, is utilised by over 75 drivers, and is considered to be a distinctive and ready-to-use feature that sets OpenBSD apart from many other operating systems, and in its root is inseparable from the OpenBSD experience.
The present framework, however, is missing the functionality that would allow the user to interface with the fan-controlling part of the hardware monitors. We therefore discuss the topic of fan control and introduce sysctl-based interfacing with the fan-controlling capabilities of microprocessor system hardware monitors. The discussed prototype implementation reduces the noise and power-consumption characteristics in fans of personal computers, especially of those PCs that are designed from off-the-shelf components. We further argue that our prototype is easier, more intuitive and robust compared to solutions available elsewhere.
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OpenBSD Hardware Sensors — Environmental Monitoring and Fan ControlMurenin, Constantine Aleksandrovich 18 May 2010 (has links)
This thesis discusses the motivation, origin, history, design guidelines, API, the device drivers and userland utilities of the hardware sensors framework available in OpenBSD. The framework spans multiple utilities in the base system and the ports tree, is utilised by over 75 drivers, and is considered to be a distinctive and ready-to-use feature that sets OpenBSD apart from many other operating systems, and in its root is inseparable from the OpenBSD experience.
The present framework, however, is missing the functionality that would allow the user to interface with the fan-controlling part of the hardware monitors. We therefore discuss the topic of fan control and introduce sysctl-based interfacing with the fan-controlling capabilities of microprocessor system hardware monitors. The discussed prototype implementation reduces the noise and power-consumption characteristics in fans of personal computers, especially of those PCs that are designed from off-the-shelf components. We further argue that our prototype is easier, more intuitive and robust compared to solutions available elsewhere.
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