xref: /titanic_41/usr/src/uts/intel/sys/bootinfo.h (revision fa8170787e7b6dbe65e182da9373af970c5861b2)
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 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_SYS_BOOTINFO_H
28 #define	_SYS_BOOTINFO_H
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 /*
35  * This is used by bootfs and dboot.  It should be at least as large as the
36  * number of modules that bootloaders (e.g., grub) can support.  This figure
37  * has been chosen to match grub's value exactly.
38  */
39 #define	MAX_BOOT_MODULES	99
40 
41 /*
42  * The 32-bit kernel loader code needs to build several structures that the
43  * kernel is expecting. They will contain native sized pointers for the
44  * target kernel.
45  */
46 
47 #if defined(_BOOT_TARGET_amd64)
48 
49 typedef uint64_t native_ptr_t;
50 
51 #elif defined(_BOOT_TARGET_i386)
52 
53 typedef uint32_t native_ptr_t;
54 
55 #elif defined(_KERNEL)
56 
57 typedef void *native_ptr_t;
58 
59 #endif
60 
61 typedef enum boot_module_type {
62 	BMT_ROOTFS,
63 	BMT_FILE,
64 	BMT_HASH
65 } boot_module_type_t;
66 
67 struct boot_memlist {
68 	uint64_t	addr;
69 	uint64_t	size;
70 	native_ptr_t	next;
71 	native_ptr_t	prev;
72 };
73 
74 /*
75  * The kernel needs to know how to find its modules.
76  */
77 struct boot_modules {
78 	native_ptr_t		bm_addr;
79 	native_ptr_t		bm_name;
80 	native_ptr_t		bm_hash;
81 	uint32_t		bm_size;
82 	boot_module_type_t	bm_type;
83 };
84 
85 /*
86  *
87  */
88 #pragma pack(1)
89 struct xboot_info {
90 	uint64_t	bi_next_paddr;	/* next physical address not used */
91 	native_ptr_t	bi_next_vaddr;	/* next virtual address not used */
92 	native_ptr_t	bi_cmdline;
93 	native_ptr_t	bi_phys_install;
94 	native_ptr_t	bi_rsvdmem;
95 	native_ptr_t	bi_pcimem;
96 	native_ptr_t	bi_modules;
97 	uint32_t	bi_module_cnt;
98 	uint32_t	bi_use_largepage;	/* MMU uses large pages */
99 	uint32_t	bi_use_pae;	/* MMU uses PAE mode (8 byte PTES) */
100 	uint32_t	bi_use_nx;	/* MMU uses NX bit in PTEs */
101 	uint32_t	bi_use_pge;	/* MMU uses Page Global Enable */
102 	native_ptr_t	bi_pt_window;
103 	native_ptr_t	bi_pte_to_pt_window;
104 	native_ptr_t	bi_kseg_size;	/* size used for kernel nucleus pages */
105 	uint64_t	bi_top_page_table;
106 #if defined(__xpv)
107 	native_ptr_t	bi_xen_start_info;
108 	native_ptr_t	bi_shared_info;		/* VA for shared_info */
109 #else
110 	native_ptr_t	bi_mb_info;
111 #endif
112 };
113 #pragma pack()
114 
115 #ifdef	__cplusplus
116 }
117 #endif
118 
119 #endif	/* _SYS_BOOTINFO_H */
120