xref: /titanic_50/usr/src/cmd/boot/common/mboot_extra.h (revision 7b07063d906859b2be1e88791f801b3c96e432f6)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
24  */
25 
26 #ifndef	_MBOOT_EXTRA_H
27 #define	_MBOOT_EXTRA_H
28 
29 #ifdef	__cplusplus
30 extern "C" {
31 #endif
32 
33 #include <stdarg.h>
34 #include <sys/types.h>
35 #include "bblk_einfo.h"
36 
37 /* multiboot header needs to be located in the first 32KB. */
38 #define	MBOOT_SCAN_SIZE		(32 * 1024 * 1024)
39 
40 /* multiboot header AOUT_KLUDGE flag. */
41 #define	BB_MBOOT_AOUT_FLAG	(0x00010000)
42 
43 /* Extra header preceeding the payloads at the end of the bootblock. */
44 typedef struct _bb_extra_header {
45 	uint32_t	size;
46 	uint32_t	checksum;
47 } bb_header_ext_t;
48 
49 uint32_t compute_checksum(char *, uint32_t);
50 bblk_einfo_t *find_einfo(char *, uint32_t);
51 int find_multiboot(char *, uint32_t, uint32_t *);
52 void add_einfo(char *, char *, bblk_hs_t *, uint32_t);
53 int compare_bootblocks(char *, char *, char **);
54 
55 #ifdef	__cplusplus
56 }
57 #endif
58 
59 #endif /* _MBOOT_EXTRA_H */
60