Abstract: Embodiments are disclosed for managing and providing access to a collection of digital resources. One embodiment provides a method comprising receiving a request to access a resource for a principal and determining one or more principal groups to which the principal belongs. The method further comprises obtaining resource set membership information indicating a resource set to which the resource belongs, and obtaining resource set access policy information for the resource set to which the resource belongs. The method yet further comprises determining whether the principal is allowed to access the resource based on the principal group membership information and the resource set access policy information, and, if the principal is allowed to access the resource, then permitting access to the resource by the principal.

Abstract: Embodiments are disclosed for managing and providing access to a collection of digital resources. One embodiment provides a method comprising receiving a request to access a resource for a principal and determining one or more principal groups to which the principal belongs. The method further comprises obtaining resource set membership information indicating a resource set to which the resource belongs, and obtaining resource set access policy information for the resource set to which the resource belongs. The method yet further comprises determining whether the principal is allowed to access the resource based on the principal group membership information and the resource set access policy information, and, if the principal is allowed to access the resource, then permitting access to the resource by the principal.

Abstract: Transitioning to a suspend to RAM sleeping state while also protecting against power losses while sleeping is provided. System state context data is saved to non-volatile storage and components in the computer system prepare to transition to a suspend to disc sleeping. A transition to the suspend to RAM sleeping state is then effected. Alternatively, after the system context is saved and the components are prepared to transition, the system may wake to a working state. The components may be directed to prepare for transitioning to a suspend to RAM sleeping state, and then the BIOS may be directed to execute the transition. In either embodiment, if power to the system is lost while the system is in the suspend to RAM system state, then the system may resume to a working state by reading the context file stored to non-volatile storage.

Abstract: A base ACPI power management state is selected and a feature of a power management state that is to be created is defined. The definition of the power management state to be created is attached to an object of the base ACPI power management state in an ACPI namespace.

Abstract: Transitioning to a suspend to RAM sleeping state while also protecting against power losses while sleeping is provided. System state context data is saved to non-volatile storage and components in the computer system prepare to transition to a suspend to disc sleeping. A transition to the suspend to RAM sleeping state is then effected. Alternatively, after the system context is saved and the components are prepared to transition, the system may wake to a working state. The components may be directed to prepare for transitioning to a suspend to RAM sleeping state, and then the BIOS may be directed to execute the transition. In either embodiment, if power to the system is lost while the system is in the suspend to RAM system state, then the system may resume to a working state by reading the context file stored to non-volatile storage.

Abstract: A method and system that enables customized computer machines to be more readily developed by removing the function of resource translation out of the hardware abstraction layer (HAL). A machine manufacturer describes a machine in firmware, such as accordance with the Advanced Configuration and Power Interface (ACPI) specification, using ACPI machine language (AML). Operating system components such as a Plug and Play (PnP) manager in the kernel, in conjunction with an ACPI driver, interpret the description information and locate resources (bus bridges) for which translation is needed. For any arbitrary bus architecture or CPU to PCI bridge implementation that can be expressed, e.g., in ACPI firmware, the invention provides a translator external to the HAL. In one implementation, a PnP driver communicates with the ACPI driver and various drivers in driver stacks via I/O request packets (IRPs) to look for resource translators.

Abstract: A system for adding multiple GPE blocks (in addition to the system/root GPE block device) to a computing system by creating a device entry in the ACPI namespace, and using a _CRS object to describe the system resources consumed by the device is described. The GPE block device may then access associated hardware devices through a well known mechanism (either I/O or Memory Mapped accesses). By creating additional GPE block devices within the ACPI namespace, general purpose events may be delivered using more traditional hardware interrupt mechanisms than with existing systems (e.g., wiring GPE blocks together). Moreover, by putting GPE block devices in the ACPI namespace, hardware components having hardware registers may be “hot plugged” to the computing system.

Abstract: A system and method that utilizes a common hardware register pseudo-language are disclosed. The present invention employs a common platform to specify hardware functionality and to execute hardware action(s). Hardware actions can be effectuated by performing a series of instructions, which comprise hardware register primitives and resources utilized by the primitives. The hardware register primitives are operations defined according to the common hardware register pseudo-language. The series of instructions can be loaded prior to boot or during initialization.