Commit graph

3 commits

Author SHA1 Message Date
Wolfgang Denk
d4c8aa9cb4 Coding Style cleanup: remove trailing empty lines
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-10-14 16:06:54 -04:00
Roger Meier
35084760a9 libfdt: SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause
Signed-off-by: Roger Meier <roger@bufferoverflow.ch>
Acked-by: Wolfgang Denk <wd@denx.de>
2013-08-10 09:04:25 -04:00
Gerald Van Baren
c71b64f361 libfdt: Add helper function to create a trivial, empty tree
The libfdt read/write functions are now usable enough that it's become a
moderately common pattern to use them to build and manipulate a device
tree from scratch.  For example, we do so ourself in our rw_tree1 testcase,
and qemu is starting to use this model when building device trees for some
targets such as e500.

However, the read/write functions require some sort of valid tree to begin
with, so this necessitates either having a trivial canned dtb to begin with
or, more commonly, creating an empty tree using the serial-write functions
first.

This patch adds a helper function which uses the serial-write functions to
create a trivial, empty but complete and valid tree in a supplied buffer,
ready for manipulation with the read/write functions.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

From git://git.jdl.com/software/dtc.git patch hash be6026838 with
adaptations to include/libfdt.h and lib/libfdt/Makefile for the U-Boot
environment.

Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
2012-10-15 22:24:36 -04:00