mkimage: Support automatic creating of a FIT without a .its

At present, when generating a FIT, mkimage requires a .its file containing
the structure of the FIT and referring to the images to be included.

Creating the .its file is a separate step that makes it harder to use FIT.
This is not required for creating legacy images.

Often the FIT is pretty standard, consisting of an OS image, some device
tree files and a single configuration. We can handle this case automatically
and avoid needing a .its file at all.

To start with, support automatically generate the FIT using a new '-f auto'
option. Initially this only supports adding a single image (e.g. a linux
kernel) and a single configuration.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/imagetool.h b/tools/imagetool.h
index 3cf42ac96a..4f426e40a0 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -61,6 +61,7 @@ struct image_tool_params {
 	int require_keys;	/* 1 to mark signing keys as 'required' */
 	int file_size;		/* Total size of output file */
 	int orig_file_size;	/* Original size for file before padding */
+	bool auto_its;		/* Automatically create the .its file */
 	int fit_image_type;	/* Image type to put into the FIT */
 };