UTBMap.kext not being loaded?

I’m just leaving this here in case anyone else runs into this. Not sure if it’s something on my end, or there was something preventing this from properly being loaded.

I’ve been trying to load the generated UTBMap.kext for a couple of hours now and it didn’t seem to work at all. Do note that I’ve generated the kext using Windows. Everything is up to date (including BIOS, drivers, etc.).

Kextutil was reporting the following:

Diagnostics for /Users/adrian/UTBMap.kext:
Warnings:
    Personality CFBundleIdentifier differs from containing kext's (not necessarily a mistake, but rarely done):
        XHC
    Personality CFBundleIdentifier names a kext that can't be found:
        'XHC' -> 'com.dhinakg.USBToolBox.kext'
    Kext has no executable or compatible version, so it should not declare any OSBundleLibraries.

Dependency Resolution Failures:
    No kexts found for these libraries:
        com.dhinakg.USBToolBox.kext

In the end, I stumbled upon this page: https://dortania.github.io/OpenCore-Post-Install/usb/manual/manual.html#special-notes

After following the guide there, I changed the following:

• Remove OSBundleLibraries (this may be the thing causing the dependency resolution failure ?)
• Use the IOProviderClass the guide recommended
• Change a few other things to be closer to the sample plist and the recommended manual mapping; kept the IOProviderMergeProperties intact.

In the end, this helped load the kext and have the XHC Ports correlate with the IOProviderMergeProperties specified in the kext, and System Report shows the proper USB ports now.

I’ve attached the before (UTBMap.kext) and after (USBMap.kext) for reference.

usb kexts.zip

[dhinakg]

Up to you. Really need to work on proper docs (kext options, in depth how to map, etc) but I’ve just entered the period where I can’t spend a lot of time.

[adrianlungu]

Ah, ok, now it makes sense!

I wasn’t sure what the Use Native Classes option would do.

Might I propose a slight improvement in the docs for this repo ? Or if you’re open to collabs I could give it a shot and cook up a PR ?