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author | Anthony Gutierrez <atgutier@umich.edu> | 2013-02-15 18:48:59 -0500 |
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committer | Anthony Gutierrez <atgutier@umich.edu> | 2013-02-15 18:48:59 -0500 |
commit | ba983f9387a703f3be8149382d4f0dcfb2009b6c (patch) | |
tree | 150af91f0ddd6de0b4138e75c317ef3f1cab4ce3 /ext/libfdt/fdt_empty_tree.c | |
parent | bd31a5dc18def5972967a595d65266d1f9ff05cb (diff) | |
download | gem5-ba983f9387a703f3be8149382d4f0dcfb2009b6c.tar.xz |
ext lib: add libfdt to enable flattened device tree support
this patch adds libfdt, a library necessary for supporting
flattened device tree support in current and future versions of
the linux/android kernel for ARM.
Diffstat (limited to 'ext/libfdt/fdt_empty_tree.c')
-rw-r--r-- | ext/libfdt/fdt_empty_tree.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/ext/libfdt/fdt_empty_tree.c b/ext/libfdt/fdt_empty_tree.c new file mode 100644 index 000000000..355863df6 --- /dev/null +++ b/ext/libfdt/fdt_empty_tree.c @@ -0,0 +1,63 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2012 David Gibson, IBM Corporation. + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_env.h" +#include "libfdt_internal.h" + +int fdt_create_empty_tree(void *buf, int bufsize) +{ + int err; + + err = fdt_create(buf, bufsize); + if (err) + return err; + + err = fdt_finish_reservemap(buf); + if (err) + return err; + + err = fdt_begin_node(buf, ""); + if (err) + return err; + + err = fdt_end_node(buf); + if (err) + return err; + + err = fdt_finish(buf); + if (err) + return err; + + return fdt_open_into(buf, buf, bufsize); +} + |