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/*
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#include <common.h>
#include <chromeos/fmap.h>
off_t fmap_find(const uint8_t *image, size_t image_len)
{
off_t offset;
uint64_t sig;
memcpy(&sig, FMAP_SIGNATURE, strlen(FMAP_SIGNATURE));
/* Find 4-byte aligned FMAP signature within image */
for (offset = 0; offset < image_len; offset += 4) {
if (!memcmp(&image[offset], &sig, sizeof(sig))) {
break;
}
}
if (offset < image_len)
return offset;
else
return -1;
}
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