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 Post subject: [SOLVED] Disabling USB Legacy Support from OS level
PostPosted: Mon Jul 29, 2019 1:28 am 
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Joined: Fri Jul 19, 2019 1:03 pm
Posts: 7
Hello!
Wiki says that USB Legacy Support must be disabled by OS as soon as it initializes USB controller.
But how to do it?


Last edited by md37 on Sat Nov 28, 2020 3:54 am, edited 1 time in total.

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 Post subject: Re: Disabling USB Legacy Support from OS level
PostPosted: Mon Jul 29, 2019 11:02 pm 
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Joined: Thu May 17, 2007 1:27 pm
Posts: 999
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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