[OE-core] [PATCH] runqemu: add virtio block device

[Maxim Uvarov]

Implement new QB_DRIVE_TYPE="/dev/vdb" which falls back
to virtio block device emulated by qemu.
That is needed to support following qemu command line:
-drive id=disk0,file=%s,if=none,format=%s \
  -device virtio-blk-device,drive=disk0'

Real use case is arm64 emulation with qemu with atf+optee+uboot,
so that uboot driver sees this disk and able to load from it.

Signed-off-by: Maxim Uvarov <maxim.uvarov at linaro.org>
---
 scripts/runqemu | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/runqemu b/scripts/runqemu
index b6fca041ae..c324982e8a 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -1196,6 +1196,9 @@ class BaseConfig(object):
                     elif drive_type.startswith("/dev/hd"):
                         logger.info('Using ide drive')
                         vm_drive = "-drive file=%s,format=%s" % (self.rootfs, rootfs_format)
+                    elif drive_type.startswith("/dev/vdb"):
+                        logger.info('Using block virtio drive');
+                        vm_drive = '-drive id=disk0,file=%s,if=none,format=%s -device virtio-blk-device,drive=disk0' % (self.rootfs, rootfs_format)
                     else:
                         # virtio might have been selected explicitly (just use it), or
                         # is used as fallback (then warn about that).
-- 
2.17.1