tree 2ecfa930caa658b6b2ad18a8e2261a2aa028e64d
parent a6f0c4faa4c65a7b7048b12c9d180d7e1aad1721
author Marek Vasut <marex@denx.de> 1346826884 +0200
committer Gerald Van Baren <gvb@unssw.com> 1347714968 -0400

fdt: Check if the FDT address is configured

In case the "fdt addr" command wasn't ran yet and any other "fdt"
subcommand was issued, the system crashed due to NULL pointer being
used.

This is caused by "fdt addr" command setting up a pointer to the
FDT memory location. Prior issuing "fdt addr", the pointer is NULL
so calling any other subcommands crashed the u-boot.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>