diff mbox series

[RFC,2/3] of: fdt: print dtb build information

Message ID 20200113181625.3130-3-alexandre.torgue@st.com (mailing list archive)
State New, archived
Headers show
Series Add device tree build information | expand

Commit Message

Alexandre Torgue Jan. 13, 2020, 6:16 p.m. UTC
This commit prints out DTB build information (build time, dts source
version used, ...) if "Build-info" property exists in DTB root node.

Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
diff mbox series


diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 2cdf64d2456f..df5f54f9582a 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1224,9 +1224,18 @@  bool __init early_init_dt_scan(void *params)
 void __init unflatten_device_tree(void)
+	const char *build_info;
+	unsigned long dt_root;
 	__unflatten_device_tree(initial_boot_params, NULL, &of_root,
 				early_init_dt_alloc_memory_arch, false);
+	/* If available, provide dtb build information */
+	dt_root = of_get_flat_dt_root();
+	build_info = of_get_flat_dt_prop(dt_root, "Build-info", NULL);
+	if (build_info)
+		pr_info("%s\n", build_info);
 	/* Get pointer to "/chosen" and "/aliases" nodes for use everywhere */