[PATCH 4/5] scripts: qemu_interactive.py: add new --usbblk option

[Ahmad Fatoum <a.fatoum@barebox.org>]

To be able to easily exercise the new xhci-pci support, add into
qemu_interactive.py a new --usbblk option that behaves like --blk, but
instead of creating a Virt I/O block device, creates a removable USB
storage.

As the ARM 64-bit Virt machine has no USB host by default, enable
xhci-pci there, so it can be readily used.

Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
---
 scripts/qemu_interactive.py           | 10 ++++++++++
 test/arm/virt@multi_v8_defconfig.yaml |  1 +
 2 files changed, 11 insertions(+)

diff --git a/scripts/qemu_interactive.py b/scripts/qemu_interactive.py
index a8605d23b132..827a831725ba 100755
--- a/scripts/qemu_interactive.py
+++ b/scripts/qemu_interactive.py
@@ -49,6 +49,9 @@ def register_shared_options(parser):
     _add_option(parser, "--blk", action="append", dest="qemu_block",
                 default=[], metavar="FILE",
                 help="Pass block device to emulated barebox. Can be specified more than once")
+    _add_option(parser, "--usbblk", action="append", dest="qemu_usbblock",
+                default=[], metavar="FILE",
+                help="Pass USB block device to emulated barebox. Can be specified more than once")
     _add_option(parser, "--env", action="append", dest="qemu_fw_cfg",
                 type=_assignment, default=[],
                 metavar="[envpath=]content | [envpath=]@filepath",
@@ -257,6 +260,13 @@ def apply_shared_options(strategy, target, options, *, interactive, fail=None):
         else:
             fail("--blk unsupported for target\n")
 
+    for i, blk in enumerate(_get_list_option(options, "qemu_usbblock")):
+        _append_qemu_args(
+            strategy, fail,
+            "-drive", f"if=none,format=raw,id=usbstorage{i},file={blk}",
+            "-device", f"usb-storage,drive=usbstorage{i},bus=usb-bus.0,removable=on"
+        )
+
     envopts = {}
 
     for i, fw_cfg in enumerate(_get_list_option(options, "qemu_fw_cfg")):
diff --git a/test/arm/virt@multi_v8_defconfig.yaml b/test/arm/virt@multi_v8_defconfig.yaml
index 4eb75da4610e..60707c951c2e 100644
--- a/test/arm/virt@multi_v8_defconfig.yaml
+++ b/test/arm/virt@multi_v8_defconfig.yaml
@@ -8,6 +8,7 @@ targets:
         memory: 1024M
         bios: barebox-qemu-virt.img
         display: qemu-default
+        extra_args: '-device qemu-xhci'
       BareboxDriver:
         prompt: 'barebox@[^:]+:[^ ]+ '
         bootstring: 'commandline:'
-- 
2.47.3