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Initially ACPI is exclusive to x86 architecture; Revision 5.0 of the ACPI specification was released in December 2011, [15] which added the ARM architecture support. The revision 5.1 was released in July 2014. [16] The latest specification revision is 6.5, which was released in August 2022. [6]
UEFI Platform Initialization (PI) specification 1.2 [9] 2009/05 Unified Extensible Firmware Interface (UEFI) specification 2.3.1 [10] 2011/04/08 UEFI Shell Specification 2.0 2008/10/08 Unified Display Interface (UDI) 1.0 Universal Serial Bus (USB) 4.0 2019
Defective BIOSes may not set up interrupt routing properly, or provide incorrect ACPI tables and Intel MultiProcessor Specification (MPS) tables. The APIC can also be a cause of system failure when the operating system does not support it properly. On older operating systems, the I/O and local APICs often had to be disabled.
Revision 1.2 was the last version of the APM specification, released in 1996. ACPI is the successor to APM. Microsoft dropped support for APM in Windows Vista. The Linux kernel still mostly supports APM, though support for APM CPU idle was dropped in version 3.0.
SFI provides access to a standard ACPI XSDT (Extended System Description Table). XSDT is used by SFI to prevent namespace collision between SPI and ACPI. It can access standard ACPI tables such as PCI Memory Configuration Table (MCFG). SFI support was merged into Linux kernel 2.6.32-rc1; [1] the core SFI patch is about 1,000 lines of code ...
UEFI Forum, Inc. is an alliance between technology companies to coordinate the development of the UEFI specifications. The board of directors includes representatives from twelve promoter companies: AMD, American Megatrends, ARM, Apple, Dell, Hewlett Packard Enterprise, HP Inc., Insyde Software, Intel, Lenovo, Microsoft, and Phoenix Technologies.
Processor performance states are defined by the Advanced Configuration and Power Interface (ACPI) specification, an open standard supported by all major operating systems; no additional software or drivers are required to support the technology. [1] The design concept behind Turbo Boost is commonly referred to as "dynamic overclocking". [2]
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