PMC administers power management functions of the PCH including interfacing with other logic and controllers on the platform to perform power state transitions, configure, manage and respond to wake events, aggregate and report latency tolerance information for devices and peripherals connected to and integrated into the PCH etc.

Handles all Platform Controller Hub (PCH) power management related activities, running ARC code on top of the CSE hardware. Intel Power Management Controller Introduction:

The CSE hardware is also capable of running other types of firmware such as Power Management Controller (PMC), Integrated Sensor Hub (ISH), Imaging Unit (iUnit), Clear Audio Voice Speech (cAVS), Wireless Microcode (WCOD) etc. So there are a total of three families of CSE-based firmware: CSME (CSE ME), CSTXE (CSE TXE) and CSSPS (CSE SPS). The CSE hardware can run Management Engine (ME) 11+, Trusted Execution Engine (TXE) 3+ or Server Platform Services (SPS) 4+ firmware. It was first introduced in 2015 with the release of Skylake CPUs working alongside 100-series Sunrise Point Platform Controller Hub (PCH). The evolution of Intel Trusted Execution Engine into a unified security co-processor, running x86 code under a Minix-based Operating System. Intel Converged Security Engine Introduction: Thus it is essential for it to be operational in order for the platform to be working properly. Such functionality extends, but it's not limited, to Platform Clocks Control (ICC), Thermal Monitoring, Fan Control, Power Management, Overclocking, Silicon Workaround (resolves silicon bugs which would have otherwise required a new cpu stepping), Identity Protection Technology, Boot Guard, Rapid Start Technology, Sensor Hub Controller (ISHC), Wireless Display, PlayReady, Protected Video/Audio Path etc. The TXE is responsible for many parts of an Intel-based system. It operates independently from the main CPU, BIOS & OS but can interact with them if needed. This can perform various tasks while the system is booting, running or sleeping. Intel Trusted Execution Engine Introduction:īuilt into many Intel Chipset-based platforms is a small, low power computer subsystem called the Intel Trusted Execution Engine (Intel TXE). Intel (Converged Security) Trusted Execution Engine:

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