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
41enum 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
49struct 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
57struct syslinux_ipinfo {
58    uint32_t ipver;
59    uint32_t myip;
60    uint32_t serverip;
61    uint32_t gateway;
62    uint32_t netmask;
63};
64
65extern __nocommon struct syslinux_version __syslinux_version;
66static inline const struct syslinux_version *syslinux_version(void)
67{
68    return &__syslinux_version;
69}
70
71union 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
146extern __nocommon union syslinux_derivative_info __syslinux_derivative_info;
147static inline const union syslinux_derivative_info
148    *syslinux_derivative_info(void)
149{
150    return &__syslinux_derivative_info;
151}
152
153struct syslinux_serial_console_info {
154    uint16_t iobase;
155    uint16_t divisor;
156    uint16_t flowctl;
157};
158
159extern void __syslinux_set_serial_console_info(void);
160
161extern __nocommon struct syslinux_serial_console_info
162    __syslinux_serial_console_info;
163static inline const struct syslinux_serial_console_info
164    *syslinux_serial_console_info(void)
165{
166    return &__syslinux_serial_console_info;
167}
168
169extern char ConfigName[];
170static inline const char *syslinux_config_file(void)
171{
172    return ConfigName;
173}
174
175struct syslinux_ipappend_strings {
176    int count;
177    const char *const *ptr;
178};
179extern __nocommon struct syslinux_ipappend_strings __syslinux_ipappend_strings;
180static inline const struct syslinux_ipappend_strings
181    *syslinux_ipappend_strings(void)
182{
183    return &__syslinux_ipappend_strings;
184}
185
186static inline enum syslinux_filesystem syslinux_filesystem(void)
187{
188    return syslinux_derivative_info()->c.filesystem;
189}
190
191extern void get_derivative_info(union syslinux_derivative_info *di);
192
193#endif /* _SYSLINUX_CONFIG_H */
194