W dniu 5.06.2023 o 11:55, Yuquan Wang pisze:
The current sbsa-ref cannot use EHCI controller which is only able to do 32-bit DMA, since sbsa-ref doesn't have RAM below 4GB. Hence, this uses XHCI to provide a usb controller with 64-bit DMA capablity instead of EHCI.Signed-off-by: Yuquan Wang<[email protected]>
Reviewed-by: Marcin Juszkiewicz <[email protected]>Without EDK2 changes Linux behaves same way (no USB found), with EDK2 changes (EHCI->XHCI) Linux gets USB devices.
