The UEFI Forum announced availability of the PI Spec v1.4, the ACPI Spec v6.0, the UEFI Spec v2.5, and Self-Certification Test (SCT v2.4B today.
PI Spec v1.4 changes:
* Graphics PPI: Launches graphics subsystem and memory controller in the PI layer, providing access to various operating systems including those that do not require full UEFI conformance.
* Multi-processor PPI: Initializes processors in the PI layer, creating a prime environment for parallelization, giving the system full use of multi-processor machines.
* Capsule PPI: Discovers operating-system-initiated firmware updates during run time and allows updates to be handled in the driver execution environment (DXE).
* No Execute Support: Protects firmware against compromised hypervisor or operating system firmware.
ACPI Spec v6.0 changes:
* CPU Topology Recognition: Identifies different CPU topologies, enabling finer control of SoCs—thereby improving power efficiency.
* Source Language Evolution: Introduces high-level language including symbolic operations and expressions for intuitive programming.
UEFI Spec v2.5 changes:
* Boot From HTTP: Provides an improved UEFI replacement for iPXE.
* Platform Recovery: Explicitly defines standard (non-emergency) boot options as well as OS and platform firmware recovery options for when the system boot fails.
* Connectivity Support: Supports Bluetooth® technology and Wi-Fi/EAP2.
* High Assurance Enterprise Replacement: Allows automated platform deployment for higher security Secure Boot configurations.
Read the full press release here:
http://www.uefi.org/node/897
Click to access UEFI%20Memory%20Specs%20Release%20Final_Apr%2030.pdf
Firmware Security 