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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | 4205b865141ff2e255fe1d3bd16de18e217ef06a (patch) | |
tree | 37f362d54d4df0567b6ee2ad4526b2a58836232b /libboot/tags.c | |
download | legacy-4205b865141ff2e255fe1d3bd16de18e217ef06a.tar.gz |
Initial Contributionandroid-1.0release-1.0cdma-import
Diffstat (limited to 'libboot/tags.c')
-rw-r--r-- | libboot/tags.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/libboot/tags.c b/libboot/tags.c new file mode 100644 index 0000000..3fbf23b --- /dev/null +++ b/libboot/tags.c @@ -0,0 +1,64 @@ +/* + * 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; + } +} + |