bootm: Optionally add a root= option to Kernel command line

It becomes a common case that the Kernel is loaded from the filesystem
which later becomes the rootfs. This adds a possibility to let bootm
automatically append the root= option to the kernel command line. This
is done when global.bootm.appendroot is true.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/boot.h b/include/boot.h
index 0198cc8826..8fcbb7f012 100644
--- a/include/boot.h
+++ b/include/boot.h
@@ -21,6 +21,11 @@ struct bootm_data {
 	enum bootm_verify verify;
 	bool force;
 	bool dryrun;
+	/*
+	 * appendroot - if true, try to add a suitable root= Kernel option to
+	 * mount the rootfs from the same device as the Kernel comes from.
+	 */
+	bool appendroot;
 	unsigned long initrd_address;
 	unsigned long os_address;
 	unsigned long os_entry;