From: Simon Glass <sjg@chromium.org>
Date: Tue, 23 Jun 2015 21:39:09 +0000 (-0600)
Subject: fdt: Provide debug info when a device tree cannot be found
X-Git-Tag: KARO-TX6-2015-09-18~1293
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=70e1788a3dec43ea75a8e90671d689afa9a98789;hp=69d518560f97f237fbc0a252cf50fa863b254d85;p=karo-tx-uboot.git

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>
---

diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index f6c2b195a3..232ca74712 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -568,6 +568,13 @@ int fdtdec_prepare_fdt(void)
 		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;
 	}