runqemu: support booting ramfs-based images

Added support for booting ramfs-based images (e.g, poky-tiny) which
do not have block device support.

This fixes [YOCTO #2612].

(From OE-Core rev: b09c45f017da71ff966004752f8e926ea00ac451)

Signed-off-by: Scott Garman <scott.a.garman@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal
index eeadb24ebe..0d4f4a1d08 100755
--- a/scripts/runqemu-internal
+++ b/scripts/runqemu-internal
@@ -453,6 +453,11 @@ if [ "$MACHINE" = "akita" ]; then
     fi
 fi
 
+if [ "x$RAMFS" = "xtrue" ]; then
+    QEMUOPTIONS="-initrd $ROOTFS -nographic"
+    KERNCMDLINE="root=/dev/ram0"
+fi
+
 if [ "x$QEMUOPTIONS" = "x" ]; then
     echo "Error: Unable to support this combination of options"
     cleanup