SMCAMDProcessor

XNU kernel extension for power management and monitoring of AMD processors. Also comes with a plugin for VirtualSMC to export readings to other applications.

Please note that this release is at very initial stage of development, make sure you have a proper backup of your EFI folder and never run on any system that matters.

Installation

SMCAMDProcessor now comes in two separate binaries(kernel extensions): *

AMDRyzenCPUPowerManagement.kext

SMCAMDProcessor.kext

AMDRyzenCPUPowerManagement.kext

1. Download the kext(s) and application from Release page
2. Add

   AMDRyzenCPUPowerManagement.kext

   to kext folder of your bootloader.
3. Edit your bootloader's config file to make sure the kext is enabled.
4. If you're using VirtualSMC you can also load

   SMCAMDProcessor.kext

   to publish sensor data.
5. Bootloaders like

   OpenCore

   will link each kext in the order they present in config file, so make sure

   AMDRyzenCPUPowerManagement.kext

   comes before

   SMCAMDProcessor.kext

   as it serves as a dependency.

Features

• CPU power management for AMD 17h processors.
• Supports for reading of temperature, energy and frequency data on AMD 17h Processors.
• Manual switching of processor speed.
• PState editing.

AMD Power Gadget

Editing PState

Since the release 0.3.1, you can now edit your CPU PState using AMD Power Tool.

To access PState editor: 1. Open AMD Power Tool 2. Go to 'Speed' tab 3. Click 'Advanced Options'

Fan Control

Due to the amount of request an experimental feature for reading and overriding fan speed is out!

You can access this menu from menu bar "Open -> SMC Fans" or the button in Power Tool. Currently only a limited amount of SMC controllers are supported.

Safety Notes

• Incorrect PState setting can potentially cause permanent damage to your computer hardware.
• For safety concern, this function was limited to root user only. You can either launch AMD Power Gadget with root user or use

  -amdpnopchk

  to disable this check.

Contribution

If you like this project, please consider supporting it via:

• Give it a star!

• Buy me a coffee(or a Zen 3 processsor 😝).

• Opening up an issue if you encountered any problem or want to make suggestions.

• or if you're a coding person, feel free to submit any pull request or just DM me on Discord.

Credits

• aluveitie for various enhancements and fixes.
• mauricelos for IT86XXE SMC chip driver.
• necross2 for adding support to temperature sensor offset.
• Shaneee for the beautiful icon.

Notes

• I am still fairly new to macOS kernel development, this software project was initally a hobby project, and it still is, to get some reading on my newly built AMD hackintosh computer.

• With that being said, please bear with some of the spaghetti and not-idiomatic codes. Any criticism is much welcomed :)