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1/******************************************************************************
2 * elfnote.h
3 *
4 * Definitions used for the Xen ELF notes.
5 *
6 * Copyright (c) 2006, Ian Campbell, XenSource Ltd.
7 */
8
9#ifndef __XEN_PUBLIC_ELFNOTE_H__
10#define __XEN_PUBLIC_ELFNOTE_H__
11
12/*
13 * The notes should live in a SHT_NOTE segment and have "Xen" in the
14 * name field.
15 *
16 * Numeric types are either 4 or 8 bytes depending on the content of
17 * the desc field.
18 *
19 * LEGACY indicated the fields in the legacy __xen_guest string which
20 * this a note type replaces.
21 */
22
23/*
24 * NAME=VALUE pair (string).
25 *
26 * LEGACY: FEATURES and PAE
27 */
28#define XEN_ELFNOTE_INFO 0
29
30/*
31 * The virtual address of the entry point (numeric).
32 *
33 * LEGACY: VIRT_ENTRY
34 */
35#define XEN_ELFNOTE_ENTRY 1
36
37/* The virtual address of the hypercall transfer page (numeric).
38 *
39 * LEGACY: HYPERCALL_PAGE. (n.b. legacy value is a physical page
40 * number not a virtual address)
41 */
42#define XEN_ELFNOTE_HYPERCALL_PAGE 2
43
44/* The virtual address where the kernel image should be mapped (numeric).
45 *
46 * Defaults to 0.
47 *
48 * LEGACY: VIRT_BASE
49 */
50#define XEN_ELFNOTE_VIRT_BASE 3
51
52/*
53 * The offset of the ELF paddr field from the acutal required
54 * pseudo-physical address (numeric).
55 *
56 * This is used to maintain backwards compatibility with older kernels
57 * which wrote __PAGE_OFFSET into that field. This field defaults to 0
58 * if not present.
59 *
60 * LEGACY: ELF_PADDR_OFFSET. (n.b. legacy default is VIRT_BASE)
61 */
62#define XEN_ELFNOTE_PADDR_OFFSET 4
63
64/*
65 * The version of Xen that we work with (string).
66 *
67 * LEGACY: XEN_VER
68 */
69#define XEN_ELFNOTE_XEN_VERSION 5
70
71/*
72 * The name of the guest operating system (string).
73 *
74 * LEGACY: GUEST_OS
75 */
76#define XEN_ELFNOTE_GUEST_OS 6
77
78/*
79 * The version of the guest operating system (string).
80 *
81 * LEGACY: GUEST_VER
82 */
83#define XEN_ELFNOTE_GUEST_VERSION 7
84
85/*
86 * The loader type (string).
87 *
88 * LEGACY: LOADER
89 */
90#define XEN_ELFNOTE_LOADER 8
91
92/*
93 * The kernel supports PAE (x86/32 only, string = "yes" or "no").
94 *
95 * LEGACY: PAE (n.b. The legacy interface included a provision to
96 * indicate 'extended-cr3' support allowing L3 page tables to be
97 * placed above 4G. It is assumed that any kernel new enough to use
98 * these ELF notes will include this and therefore "yes" here is
99 * equivalent to "yes[entended-cr3]" in the __xen_guest interface.
100 */
101#define XEN_ELFNOTE_PAE_MODE 9
102
103/*
104 * The features supported/required by this kernel (string).
105 *
106 * The string must consist of a list of feature names (as given in
107 * features.h, without the "XENFEAT_" prefix) separated by '|'
108 * characters. If a feature is required for the kernel to function
109 * then the feature name must be preceded by a '!' character.
110 *
111 * LEGACY: FEATURES
112 */
113#define XEN_ELFNOTE_FEATURES 10
114
115/*
116 * The kernel requires the symbol table to be loaded (string = "yes" or "no")
117 * LEGACY: BSD_SYMTAB (n.b. The legacy treated the presence or absence
118 * of this string as a boolean flag rather than requiring "yes" or
119 * "no".
120 */
121#define XEN_ELFNOTE_BSD_SYMTAB 11
122
123/*
124 * The lowest address the hypervisor hole can begin at (numeric).
125 *
126 * This must not be set higher than HYPERVISOR_VIRT_START. Its presence
127 * also indicates to the hypervisor that the kernel can deal with the
128 * hole starting at a higher address.
129 */
130#define XEN_ELFNOTE_HV_START_LOW 12
131
132/*
133 * List of maddr_t-sized mask/value pairs describing how to recognize
134 * (non-present) L1 page table entries carrying valid MFNs (numeric).
135 */
136#define XEN_ELFNOTE_L1_MFN_VALID 13
137
138/*
139 * Whether or not the guest supports cooperative suspend cancellation.
140 */
141#define XEN_ELFNOTE_SUSPEND_CANCEL 14
142
143#endif /* __XEN_PUBLIC_ELFNOTE_H__ */
144
145/*
146 * Local variables:
147 * mode: C
148 * c-set-style: "BSD"
149 * c-basic-offset: 4
150 * tab-width: 4
151 * indent-tabs-mode: nil
152 * End:
153 */
1/******************************************************************************
2 * elfnote.h
3 *
4 * Definitions used for the Xen ELF notes.
5 *
6 * Copyright (c) 2006, Ian Campbell, XenSource Ltd.
7 */
8
9#ifndef __XEN_PUBLIC_ELFNOTE_H__
10#define __XEN_PUBLIC_ELFNOTE_H__
11
12/*
13 * The notes should live in a SHT_NOTE segment and have "Xen" in the
14 * name field.
15 *
16 * Numeric types are either 4 or 8 bytes depending on the content of
17 * the desc field.
18 *
19 * LEGACY indicated the fields in the legacy __xen_guest string which
20 * this a note type replaces.
21 */
22
23/*
24 * NAME=VALUE pair (string).
25 *
26 * LEGACY: FEATURES and PAE
27 */
28#define XEN_ELFNOTE_INFO 0
29
30/*
31 * The virtual address of the entry point (numeric).
32 *
33 * LEGACY: VIRT_ENTRY
34 */
35#define XEN_ELFNOTE_ENTRY 1
36
37/* The virtual address of the hypercall transfer page (numeric).
38 *
39 * LEGACY: HYPERCALL_PAGE. (n.b. legacy value is a physical page
40 * number not a virtual address)
41 */
42#define XEN_ELFNOTE_HYPERCALL_PAGE 2
43
44/* The virtual address where the kernel image should be mapped (numeric).
45 *
46 * Defaults to 0.
47 *
48 * LEGACY: VIRT_BASE
49 */
50#define XEN_ELFNOTE_VIRT_BASE 3
51
52/*
53 * The offset of the ELF paddr field from the acutal required
54 * pseudo-physical address (numeric).
55 *
56 * This is used to maintain backwards compatibility with older kernels
57 * which wrote __PAGE_OFFSET into that field. This field defaults to 0
58 * if not present.
59 *
60 * LEGACY: ELF_PADDR_OFFSET. (n.b. legacy default is VIRT_BASE)
61 */
62#define XEN_ELFNOTE_PADDR_OFFSET 4
63
64/*
65 * The version of Xen that we work with (string).
66 *
67 * LEGACY: XEN_VER
68 */
69#define XEN_ELFNOTE_XEN_VERSION 5
70
71/*
72 * The name of the guest operating system (string).
73 *
74 * LEGACY: GUEST_OS
75 */
76#define XEN_ELFNOTE_GUEST_OS 6
77
78/*
79 * The version of the guest operating system (string).
80 *
81 * LEGACY: GUEST_VER
82 */
83#define XEN_ELFNOTE_GUEST_VERSION 7
84
85/*
86 * The loader type (string).
87 *
88 * LEGACY: LOADER
89 */
90#define XEN_ELFNOTE_LOADER 8
91
92/*
93 * The kernel supports PAE (x86/32 only, string = "yes" or "no").
94 *
95 * LEGACY: PAE (n.b. The legacy interface included a provision to
96 * indicate 'extended-cr3' support allowing L3 page tables to be
97 * placed above 4G. It is assumed that any kernel new enough to use
98 * these ELF notes will include this and therefore "yes" here is
99 * equivalent to "yes[entended-cr3]" in the __xen_guest interface.
100 */
101#define XEN_ELFNOTE_PAE_MODE 9
102
103/*
104 * The features supported/required by this kernel (string).
105 *
106 * The string must consist of a list of feature names (as given in
107 * features.h, without the "XENFEAT_" prefix) separated by '|'
108 * characters. If a feature is required for the kernel to function
109 * then the feature name must be preceded by a '!' character.
110 *
111 * LEGACY: FEATURES
112 */
113#define XEN_ELFNOTE_FEATURES 10
114
115/*
116 * The kernel requires the symbol table to be loaded (string = "yes" or "no")
117 * LEGACY: BSD_SYMTAB (n.b. The legacy treated the presence or absence
118 * of this string as a boolean flag rather than requiring "yes" or
119 * "no".
120 */
121#define XEN_ELFNOTE_BSD_SYMTAB 11
122
123/*
124 * The lowest address the hypervisor hole can begin at (numeric).
125 *
126 * This must not be set higher than HYPERVISOR_VIRT_START. Its presence
127 * also indicates to the hypervisor that the kernel can deal with the
128 * hole starting at a higher address.
129 */
130#define XEN_ELFNOTE_HV_START_LOW 12
131
132/*
133 * List of maddr_t-sized mask/value pairs describing how to recognize
134 * (non-present) L1 page table entries carrying valid MFNs (numeric).
135 */
136#define XEN_ELFNOTE_L1_MFN_VALID 13
137
138/*
139 * Whether or not the guest supports cooperative suspend cancellation.
140 */
141#define XEN_ELFNOTE_SUSPEND_CANCEL 14
142
143#endif /* __XEN_PUBLIC_ELFNOTE_H__ */
144
145/*
146 * Local variables:
147 * mode: C
148 * c-set-style: "BSD"
149 * c-basic-offset: 4
150 * tab-width: 4
151 * indent-tabs-mode: nil
152 * End:
153 */