| /* |
| * 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; |
| } |
| } |
| |