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[SOLVED] Disabling USB Legacy Support from OS level

http://f.osdev.org/viewtopic.php?t=33795

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[SOLVED] Disabling USB Legacy Support from OS level

Posted: Mon Jul 29, 2019 1:28 am
by md37
Hello!
Wiki says that USB Legacy Support must be disabled by OS as soon as it initializes USB controller.
But how to do it?

Re: Disabling USB Legacy Support from OS level

Posted: Mon Jul 29, 2019 11:02 pm
by Korona
That depends on the controller. UHCI has a simple register to disable SMI generation, while EHCI and XHCI have a semaphore to communicate with the firmware. Check the data sheets.
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