The usbmouse01.exe file in the testsuite directory of rtems-libbsd failed to run

I recently tried to build an application to capture mouse and keyboard events using the evdev and usb drivers of rtems-libbsd. I tried to run the demo under rtems-libbsd first, but it failed to scan any USB devices. When building rtems-libbsd, the configuration parameter I used was everything.ini, and the BSP I used was i386/pc386. With the qemu instruction is qemu-systemqemu-system-i386-m-m PC 256m -kernel build/i386-rtems7-pc386-everything /usbmouse01. stdio-device piix3-usb-uhci-device usb-kbd-device usb-mouse.

Could you please offer some advice on how to get mouse and keyboard events using the usb driver of rtems-libbsd?

Thanks,
yijunli