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

[Alistair Francis]

On Wed, Nov 2, 2016 at 4:18 PM, Alistair Francis
<alistair.francis at xilinx.com> wrote:
> 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)

This diff didn't end up making it in somehow. This is also required:

diff --git a/scripts/runqemu b/scripts/runqemu
index ac10ee2..5f60312 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -861,6 +861,9 @@ class BaseConfig(object):
             k_root = '/dev/nfs nfsroot=%s:%s,%s' % (self.nfs_server,
self.nfs_dir, self.unfs_opts)
             self.kernel_cmdline = 'root=%s rw highres=off' % k_root

+        if self.fstype == 'none':
+            self.rootfs_options = ''
+
         self.set('ROOTFS_OPTIONS', self.rootfs_options)

     def guess_qb_system(self):

Thanks,

Alistair

> --
> 2.7.4
>