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/*
* 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/tags.h>
#define DBG(x...) do{}while(0)
//#define DBG(x...) dprintf(x)
void tags_parse(void *_tags, struct tag_handler *handlers, unsigned count)
{
unsigned n;
unsigned *tags = _tags;
DBG("tags_parse %p\n", tags);
/* make sure there's a CORE marker first */
if(tags[0] != 2) return;
if(tags[1] != 0x54410001) return;
for(;;) {
unsigned size = tags[0];
unsigned type = tags[1];
DBG("tags_parse %x %x\n", size, type);
if(size < 2) break;
for(n = 0; n < count; n++) {
struct tag_handler *h = handlers + n;
if((h->type == type) || (h->type == 0)) {
h->func(type, (void*) &tags[2], (size - 2) * 4, h->cookie);
break;
}
}
tags += size;
}
}
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