[OE-core] [PATCH 2/2] runqemu: Allow the user to specity no kernel or rootFS

[Alistair Francis]

In some cirsumstances the user doesn't want to supply a kernel, rootFS
or DTB to QEMU. This will occur more now that QEMU supports loading
images using a '-device loader' method.

Allow users to specify 'none' for QB_DEFAULT_FSTYPE or QB_DEFAULT_KERNEL
to avoid supplying these options to QEMU.

Signed-off-by: Alistair Francis <alistair.francis at xilinx.com>
---
 scripts/runqemu | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/runqemu b/scripts/runqemu
index 922ebaf..ac10ee2 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -453,7 +453,7 @@ class BaseConfig(object):
     def check_rootfs(self):
         """Check and set rootfs"""
 
-        if self.fstype == 'nfs':
+        if self.fstype == 'nfs' or self.fstype == "none":
             return
 
         if self.rootfs and not os.path.exists(self.rootfs):
@@ -481,6 +481,10 @@ class BaseConfig(object):
         # QB_DEFAULT_KERNEL is always a full file path
         kernel_name = os.path.basename(self.get('QB_DEFAULT_KERNEL'))
 
+        # The user didn't want a kernel to be loaded
+        if kernel_name == "none":
+            return
+
         deploy_dir_image = self.get('DEPLOY_DIR_IMAGE')
         if not self.kernel:
             kernel_match_name = "%s/%s" % (deploy_dir_image, kernel_name)
-- 
2.7.4