spl: fit: Add booting OS first
If CONFIG_SPL_OS_BOOT is enabled, boot OS if kernel image is found
in FIT structure.
Signed-off-by: York Sun <york.sun@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/uImage.FIT/multi_spl.its b/doc/uImage.FIT/multi_spl.its
index e5551d4..d43563d 100644
--- a/doc/uImage.FIT/multi_spl.its
+++ b/doc/uImage.FIT/multi_spl.its
@@ -4,6 +4,13 @@
* (Bogus) example FIT image description file demonstrating the usage
* of multiple images loaded by the SPL.
* Several binaries will be loaded at their respective load addresses.
+ *
+ * For booting U-Boot, "firmware" is searched first. If not found, "loadables"
+ * is used to identify images to be loaded into memory. If falcon boot is
+ * enabled, "kernel" is searched first. If not found, it falls back to the
+ * same flow as booting U-Boot. Changing image type will result skipping
+ * specific image.
+ *
* Finally the one image specifying an entry point will be entered by the SPL.
*/