wic: Add --embed-rootfs argument

This option adds the content of a rootfs on a specific location on the
rootfs.

It is very useful for making a partition that contains the rootfs for a
host and a target Eg:

/ -> Roofs for the host
/export/ -> Rootfs for the target (which will netboot)

Although today we support making a partition for "/export" this might
not be compatible with some upgrade systems, or we might be limited by
the number of partitions.

With this patch we can use something like:

part / --source rootfs --embed-rootfs target-image /export --embed-rootfs target-image2 /export2

on the .wks file.

(From OE-Core rev: efdcf94801f6abe8e4099e324d9a3deccd8d4384)

Signed-off-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/scripts/lib/wic/ksparser.py b/scripts/lib/wic/ksparser.py
index 650b976223..64c8c1175e 100644
--- a/scripts/lib/wic/ksparser.py
+++ b/scripts/lib/wic/ksparser.py
@@ -138,6 +138,7 @@ class KickStart():
         part.add_argument('--align', type=int)
         part.add_argument('--exclude-path', nargs='+')
         part.add_argument('--include-path', nargs='+')
+        part.add_argument('--embed-rootfs', nargs=2, action='append')
         part.add_argument("--extra-space", type=sizetype)
         part.add_argument('--fsoptions', dest='fsopts')
         part.add_argument('--fstype', default='vfat',