1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/crc32.h>
28
29 static unsigned int crc32_tab[] = { CRC32_TABLE };
30
31 /*
32 * Return a 32-bit CRC of the contents of the buffer.
33 *
34 * The seed is 0xffffffff and the result is XORed with 0xffffffff
35 * because this is what the Itanium firmware expects.
36 */
37 unsigned int
efi_crc32(const unsigned char * s,unsigned int len)38 efi_crc32(const unsigned char *s, unsigned int len)
39 {
40 unsigned int crc32val;
41
42 CRC32(crc32val, s, len, -1U, crc32_tab);
43
44 return (crc32val ^ -1U);
45 }
46