image-fdt: save name of FIT configuration in '/chosen' node

It can be useful for the OS (Linux) to know which configuration has
been chosen by U-Boot when launching a FIT image.
Store the name of the FIT configuration node used in a new string
property called 'u-boot,bootconf' in the '/chosen' node in device tree.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

diff --git a/boot/image-fdt.c b/boot/image-fdt.c
index 692a9ad3e429c83b8f4f9428b44456134c75eab8..fdb69926a266eb3896da617fea5cf9bf5fe9a54e 100644 (file)
--- a/boot/image-fdt.c
+++ b/boot/image-fdt.c
@@ -601,6 +601,12 @@ int image_setup_libfdt(bootm_headers_t *images, void *blob,
                goto err;
        }
 
+       /* Store name of configuration node as u-boot,bootconf in /chosen node */
+       if (images->fit_uname_cfg)
+               fdt_find_and_setprop(blob, "/chosen", "u-boot,bootconf",
+                                       images->fit_uname_cfg,
+                                       strlen(images->fit_uname_cfg) + 1, 1);
+
        /* Update ethernet nodes */
        fdt_fixup_ethernet(blob);
 #if CONFIG_IS_ENABLED(CMD_PSTORE)