diff options
Diffstat (limited to 'libboot/tags_revision.c')
-rw-r--r-- | libboot/tags_revision.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/libboot/tags_revision.c b/libboot/tags_revision.c new file mode 100644 index 0000000..d4eeb40 --- /dev/null +++ b/libboot/tags_revision.c @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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 <boot/boot.h> +#include <boot/tags.h> +#include <boot/flash.h> + +static void tag_revision(unsigned tag, void *data, unsigned bytes, void *cookie) +{ + if(bytes == 4) { + memcpy(cookie, data, 4); + } +} + +unsigned tags_get_revision(void *tags) +{ + unsigned n = 0; + struct tag_handler h; + + h.type = 0x54410007; + h.func = tag_revision; + h.cookie = &n; + + tags_parse(tags, &h, 1); + + return n; +} |