From c309c2da147c2f166132341d578a41d3d9132966 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Sat, 20 Apr 2013 08:42:46 +0000
Subject: [PATCH] fdt: Skip checking FDT if the pointer is NULL
If we have no FDT, don't attempt to read from it. This allows sandbox to
run without an FDT if required.
Signed-off-by: Simon Glass <sjg@chromium.org>
---
lib/fdtdec.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 60369fbc57..ac1fe0be20 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -354,7 +354,8 @@ int fdtdec_check_fdt(void)
*/
int fdtdec_prepare_fdt(void)
{
- if (((uintptr_t)gd->fdt_blob & 3) || fdt_check_header(gd->fdt_blob)) {
+ if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
+ fdt_check_header(gd->fdt_blob)) {
printf("No valid FDT 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");
--
2.39.5