fdt: Provide debug info when a device tree cannot be found

It can be quite confusing with a new platform to figure out why the device tree cannot be located. Add some debug information for this case. Signed-off-by: Simon Glass <sjg@chromium.org>

fdt: Provide debug info when a device tree cannot be found
It can be quite confusing with a new platform to figure out why the device tree cannot be located. Add some debug information for this case. Signed-off-by: Simon Glass <sjg@chromium.org>
Simon Glass
1 parent c4af6732c4
Showing 1 changed file with 7 additions and 0 deletions Side-by-side Diff
lib/fdtdec.c
@@ -568,6 +568,13 @@
 		puts("Missing DTB\n");
 #else
 		puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
+# ifdef DEBUG
+		if (gd->fdt_blob) {
+			printf("fdt_blob=%p\n", gd->fdt_blob);
+			print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
+				     32, 0);
+		}
+# endif
 #endif
 		return -1;
 	}
...	...	@@ -568,6 +568,13 @@
568	568	puts("Missing DTB\n");
569	569	#else
570	570	puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
	571	+# ifdef DEBUG
	572	+ if (gd->fdt_blob) {
	573	+ printf("fdt_blob=%p\n", gd->fdt_blob);
	574	+ print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
	575	+ 32, 0);
	576	+ }
	577	+# endif
571	578	#endif
572	579	return -1;
573	580	}