[Bug 1772165] Re: arm raspi2/raspi3 emulation has no USB support

[Carlo Bramini <1772165@bugs.launchpad.net>]

I'm also trying to run QEMU for emulating Raspberry PI, but I'm still unable to make working external USB devices like keyboard and mouse.
Unlike previous users, I'm not using a linux distro but Microsoft Windows 10 instead.
I'm using the precompiled 64bit executables downloaded from https://qemu.weilnetz.de/w64/ as suggested from the download page at qemu.org for Windows targets.
The version printed by the emulator is:

> QEMU emulator version 6.2.0 (v6.2.0-11889-g5b72bf03f5-dirty)
> Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers

I'm launching the emulator with this command as administrator:

qemu-system-arm -M raspi2b -drive file=2020-12-02-raspios-buster-
armhf.img,format=raw,if=sd -dtb qemu-rpi-kernel\native-
emuation\dtbs\bcm2709-rpi-2-b.dtb -kernel qemu-rpi-kernel\native-
emuation\kernels\kernel7.img -append "rw earlycon=pl011,0x3f201000
console=ttyAMA0 loglevel=8 root=/dev/mmcblk0p2 fsck.repair=yes
net.ifnames=0 rootwait memtest=1 dwc_otg.fiq_fsm_enable=0" -serial stdio
-no-reboot -netdev user,id=net0 -usb -device usb-kbd -device usb-tablet
-device usb-net,netdev=net0

Besides few obvious changes, like the separator character for
directories (\ instead of /) and quotes (" instead of '), the command is
the same as the one described above.

The emulator starts, the desktop of the OS appears, but still no keyboard and no mouse support.
However, I can still login by using the terminal provided by the emulated serial terminal.

Is the feature expected to work also on the port of QEMU for Windows?

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https://bugs.launchpad.net/bugs/1772165

Title:
  arm raspi2/raspi3 emulation has no USB support

Status in QEMU:
  Fix Released

Bug description:
  Using Qemu 2.12.0 on ArchLinux.

  Trying to emulate arm device with `qemu-system-arm` and attach usb
  device for unput using

  ` -usb -device usb-host,bus=001,vendorid=0x1d6b,productid=0x0002 `

  # lsusb returns

  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 001 Device 014: ID 13d3:3487 IMC Networks 
  Bus 001 Device 004: ID 0457:11af Silicon Integrated Systems Corp. 
  Bus 001 Device 003: ID 0bda:57e6 Realtek Semiconductor Corp. 
  Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

  # qemu returns
  qemu-system-arm: -device usb-host,bus=001,vendorid=0x1d6b,productid=0x0002: Bus '001' not found

  
  Tried with connecting external usb keyboard but that didn't seem to work either.

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