1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved
4 * Copyright 2009 Intel Corporation; author: H. Peter Anvin
5 *
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software and associated documentation
8 * files (the "Software"), to deal in the Software without
9 * restriction, including without limitation the rights to use,
10 * copy, modify, merge, publish, distribute, sublicense, and/or
11 * sell copies of the Software, and to permit persons to whom
12 * the Software is furnished to do so, subject to the following
13 * conditions:
14 *
15 * The above copyright notice and this permission notice shall
16 * be included in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
20 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
22 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * ----------------------------------------------------------------------- */
28
29 /*
30 * syslinux/config.h
31 *
32 * Query syslinux configuration information.
33 */
34
35 #ifndef _SYSLINUX_CONFIG_H
36 #define _SYSLINUX_CONFIG_H
37
38 #include <stdint.h>
39 #include <com32.h>
40
41 enum syslinux_filesystem {
42 SYSLINUX_FS_UNKNOWN = 0x30,
43 SYSLINUX_FS_SYSLINUX = 0x31,
44 SYSLINUX_FS_PXELINUX = 0x32,
45 SYSLINUX_FS_ISOLINUX = 0x33,
46 SYSLINUX_FS_EXTLINUX = 0x34,
47 };
48
49 struct syslinux_version {
50 uint16_t version; /* (major << 8)+minor */
51 uint16_t max_api;
52 enum syslinux_filesystem filesystem;
53 const char *version_string;
54 const char *copyright_string;
55 };
56
57 struct syslinux_ipinfo {
58 uint32_t ipver;
59 uint32_t myip;
60 uint32_t serverip;
61 uint32_t gateway;
62 uint32_t netmask;
63 };
64
65 extern __nocommon struct syslinux_version __syslinux_version;
syslinux_version(void)66 static inline const struct syslinux_version *syslinux_version(void)
67 {
68 return &__syslinux_version;
69 }
70
71 union syslinux_derivative_info {
72 struct {
73 com32sys_t r;
74 const void *esbx;
75 const void *fssi;
76 const void *gsdi;
77 } rr; /* real raw */
78 struct {
79 uint16_t _pad1[4];
80 uint32_t _pad2[7];
81 uint8_t filesystem;
82 uint8_t ah;
83 uint16_t axh;
84 } c; /* common */
85 struct {
86 uint16_t gs;
87 uint16_t fs;
88 uint16_t es;
89 uint16_t ds;
90 uint16_t di, dih;
91 uint16_t si, sih;
92 uint16_t bp, bph;
93 uint16_t sp, sph;
94 uint16_t bx, bxh;
95 uint16_t dx, dxh;
96 uint16_t cx, cxh;
97 uint16_t ax, axh;
98 uint32_t eflags;
99 const void *esbx;
100 const void *fssi;
101 const void *gsdi;
102 } r; /* raw */
103 struct {
104 uint16_t _gs, _fs, _es, _ds;
105 uint32_t _edi, _esi, _ebp, _esp, _ebx;
106 uint8_t drive_number, dh;
107 uint16_t _dxh;
108 uint8_t sector_shift, ch;
109 uint16_t _cxh;
110 uint8_t filesystem, ah;
111 uint16_t _axh;
112 uint32_t _eflags;
113 const void *ptab_ptr;
114 const uint32_t *esdi_ptr;
115 const uint64_t *partoffset;
116 } disk; /* syslinux/extlinux */
117 struct {
118 uint16_t _gs, stack_seg, pxenv_seg, _ds;
119 uint32_t _edi, stack_offs, _ebp, _esp, pxenv_offs;
120 uint16_t apiver;
121 uint16_t _dxh;
122 uint32_t myip;
123 uint8_t filesystem, ah;
124 uint16_t _axh;
125 uint32_t _eflags;
126 const void *pxenvptr;
127 const void *stack;
128 const struct syslinux_ipinfo *ipinfo;
129 } pxe; /* pxelinux */
130 struct {
131 uint16_t _gs, _fs, _es, _ds;
132 uint32_t _edi, _esi, _ebp, _esp, _ebx;
133 uint8_t drive_number, dh;
134 uint16_t _dxh;
135 uint8_t sector_shift, cd_mode;
136 uint16_t _cxh;
137 uint8_t filesystem, ah;
138 uint16_t _axh;
139 uint32_t _eflags;
140 const void *spec_packet;
141 const uint32_t *esdi_ptr;
142 const uint64_t *partoffset;
143 } iso; /* isolinux */
144 };
145
146 extern __nocommon union syslinux_derivative_info __syslinux_derivative_info;
147 static inline const union syslinux_derivative_info
syslinux_derivative_info(void)148 *syslinux_derivative_info(void)
149 {
150 return &__syslinux_derivative_info;
151 }
152
153 struct syslinux_serial_console_info {
154 uint16_t iobase;
155 uint16_t divisor;
156 uint16_t flowctl;
157 };
158
159 extern void __syslinux_set_serial_console_info(void);
160
161 extern __nocommon struct syslinux_serial_console_info
162 __syslinux_serial_console_info;
163 static inline const struct syslinux_serial_console_info
syslinux_serial_console_info(void)164 *syslinux_serial_console_info(void)
165 {
166 return &__syslinux_serial_console_info;
167 }
168
169 extern char ConfigName[];
syslinux_config_file(void)170 static inline const char *syslinux_config_file(void)
171 {
172 return ConfigName;
173 }
174
175 struct syslinux_ipappend_strings {
176 int count;
177 const char *const *ptr;
178 };
179 extern __nocommon struct syslinux_ipappend_strings __syslinux_ipappend_strings;
180 static inline const struct syslinux_ipappend_strings
syslinux_ipappend_strings(void)181 *syslinux_ipappend_strings(void)
182 {
183 return &__syslinux_ipappend_strings;
184 }
185
syslinux_filesystem(void)186 static inline enum syslinux_filesystem syslinux_filesystem(void)
187 {
188 return syslinux_derivative_info()->c.filesystem;
189 }
190
191 extern void get_derivative_info(union syslinux_derivative_info *di);
192
193 #endif /* _SYSLINUX_CONFIG_H */
194