1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: bootstrap.h,v 1.3 1998/09/03 02:10:07 msmith Exp $
*/
#include <sys/types.h>
/* XXX debugging */
extern struct console vidconsole;
#define MARK(s, c) {vidconsole.c_out(s); vidconsole.c_out(c); while (!vidconsole.c_ready()) ; vidconsole.c_in();}
/*
* Generic device specifier; architecture-dependant
* versions may be larger, but should be allowed to
* overlap.
*/
struct devdesc
{
struct devsw *d_dev;
int d_type;
#define DEVT_NONE 0
#define DEVT_DISK 1
#define DEVT_NET 2
};
/* Commands and return values; nonzero return sets command_errmsg != NULL */
typedef int (bootblk_cmd_t)(int argc, char *argv[]);
extern char *command_errmsg;
extern char command_errbuf[]; /* XXX blah, length */
#define CMD_OK 0
#define CMD_ERROR 1
/* interp.c */
extern void interact(void);
extern void source(char *filename);
/* boot.c */
extern int autoboot(int delay, char *prompt);
/* misc.c */
extern char *unargv(int argc, char *argv[]);
extern size_t strlenout(vm_offset_t str);
extern char *strdupout(vm_offset_t str);
/*
* Modular console support.
*/
struct console
{
char *c_name;
char *c_desc;
int c_flags;
#define C_PRESENTIN (1<<0)
#define C_PRESENTOUT (1<<1)
#define C_ACTIVEIN (1<<2)
#define C_ACTIVEOUT (1<<3)
void (* c_probe)(struct console *cp); /* set c_flags to match hardware */
int (* c_init)(int arg); /* reinit XXX may need more args */
void (* c_out)(int c); /* emit c */
int (* c_in)(void); /* wait for and return input */
int (* c_ready)(void); /* return nonzer if input waiting */
};
extern struct console *consoles[];
extern void cons_probe(void);
/*
* Plug-and-play enumerator/configurator interface.
*/
struct pnpinfo
{
char *pi_ident; /* ASCII identifier, actual format varies with bus/handler */
int pi_revision; /* optional revision (or -1) if not supported */
char *pi_module; /* module/args nominated to handle device */
int pi_argc; /* module arguments */
char **pi_argv;
int pi_handler; /* handler which detected this device */
struct pnpinfo *pi_next;
}
struct pnphandler
{
char *pp_name; /* handler/bus name */
struct pnpinfo *(pp_enumerate *)(int index); /* return a string identifying device (index) */
};
extern struct pnphandler *pnphandlers[]; /* provided by MD code */
/*
* Module metadata header.
*
* Metadata are allocated on our heap, and copied into kernel space
* before executing the kernel.
*/
struct module_metadata
{
size_t md_size;
u_int16_t md_type;
struct module_metadata *md_next;
char md_data[0]; /* data are immediately appended */
};
/*
* Loaded module information.
*
* At least one module (the kernel) must be loaded in order to boot.
* The kernel is always loaded first.
*
* String fields (m_name, m_type) should be dynamically allocated.
*/
struct loaded_module
{
char *m_name; /* module name */
char *m_type; /* verbose module type, eg 'ELF kernel', 'pnptable', etc. */
char *m_args; /* arguments for the module */
struct module_metadata *m_metadata; /* metadata that will be placed in the module directory */
int m_loader; /* index of the loader that read the file */
vm_offset_t m_addr; /* load address */
size_t m_size; /* module size */
struct loaded_module *m_next; /* next module */
};
struct module_format
{
/* Load function must return EFTYPE if it can't handle the module supplied */
int (* l_load)(char *filename, vm_offset_t dest, struct loaded_module **result);
/* Only a loader that will load a kernel (first module) should have an exec handler */
int (* l_exec)(struct loaded_module *mp);
};
extern struct module_format *module_formats[]; /* supplied by consumer */
extern struct loaded_module *loaded_modules;
extern int mod_load(char *name, int argc, char *argv[]);
extern int mod_loadobj(char *type, char *name);
extern struct loaded_module *mod_findmodule(char *name, char *type);
extern void mod_addmetadata(struct loaded_module *mp, int type, size_t size, void *p);
extern struct module_metadata *mod_findmetadata(struct loaded_module *mp, int type);
extern void mod_discard(struct loaded_module *mp);
/*
* Module information subtypes
*/
/* XXX these belong in <machine/bootinfo.h> */
#define MODINFO_NAME 0x0000
#define MODINFO_TYPE 0x0001
#define MODINFO_ADDR 0x0002
#define MODINFO_SIZE 0x0003
#define MODINFO_METADATA 0x8000
#define MODINFOMD_AOUTEXEC 0x0001 /* a.out exec header */
#define MODINFOMD_ELFHDR 0x0002 /* ELF header */
#define MODINFOMD_NOCOPY 0x8000 /* don't copy this metadata to the kernel */
/* MI module loaders */
extern int aout_loadmodule(char *filename, vm_offset_t dest, struct loaded_module **result);
extern vm_offset_t aout_findsym(char *name, struct loaded_module *mp);
/* extern int elf_loadmodule(char *filename, vm_offset_t dest, struct loaded_module **result); */
#define KLD_IDENT_SYMNAME "kld_identifier_"
#define MODINFOMD_KLDIDENT (MODINFOMD_NOCOPY | 0x4000)
#define MODINFOMD_KLDDEP (MODINFOMD_NOCOPY | 0x4001)
#if defined(__ELF__)
/*
* Alpha GAS needs an align before the section change. It seems to assume
* that after the .previous, it is aligned, so the following .align 3 is
* ignored. Since the previous instructions often contain strings, this is
* a problem.
*/
#ifdef __alpha__
#define MAKE_SET(set, sym) \
__asm(".align 3"); \
__asm(".section .set." #set ",\"aw\""); \
__asm(".quad " #sym); \
__asm(".previous")
#else
#define MAKE_SET(set, sym) \
__asm(".section .set." #set ",\"aw\""); \
__asm(".long " #sym); \
__asm(".previous")
#endif
#define TEXT_SET(set, sym) MAKE_SET(set, sym)
#define DATA_SET(set, sym) MAKE_SET(set, sym)
#define BSS_SET(set, sym) MAKE_SET(set, sym)
#define ABS_SET(set, sym) MAKE_SET(set, sym)
#else
/*
* Linker set support, directly from <sys/kernel.h>
*
* NB: the constants defined below must match those defined in
* ld/ld.h. Since their calculation requires arithmetic, we
* can't name them symbolically (e.g., 23 is N_SETT | N_EXT).
*/
#define MAKE_SET(set, sym, type) \
static void const * const __set_##set##_sym_##sym = &sym; \
__asm(".stabs \"_" #set "\", " #type ", 0, 0, _" #sym)
#define TEXT_SET(set, sym) MAKE_SET(set, sym, 23)
#define DATA_SET(set, sym) MAKE_SET(set, sym, 25)
#define BSS_SET(set, sym) MAKE_SET(set, sym, 27)
#define ABS_SET(set, sym) MAKE_SET(set, sym, 21)
#endif
struct linker_set {
int ls_length;
const void *ls_items[1]; /* really ls_length of them, trailing NULL */
};
/*
* Support for commands
*/
struct bootblk_command
{
const char *c_name;
const char *c_desc;
bootblk_cmd_t *c_fn;
};
#define COMMAND_SET(tag, key, desc, func) \
static bootblk_cmd_t func; \
static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
DATA_SET(Xcommand_set, _cmd_ ## tag);
extern struct linker_set Xcommand_set;
/*
* The intention of the architecture switch is to provide a convenient
* encapsulation of the interface between the bootstrap MI and MD code.
* MD code may selectively populate the switch at runtime based on the
* actual configuration of the target system.
*/
struct arch_switch
{
/* Automatically load modules as required by detected hardware */
int (* arch_autoload)();
/* Locate the device for (name), return pointer to tail in (*path) */
int (*arch_getdev)(void **dev, char *name, char **path);
/* Copy from local address space to module address space, similar to bcopy() */
int (*arch_copyin)(void *src, vm_offset_t dest, size_t len);
/* Copy to local address space from module address space, similar to bcopy() */
int (*arch_copyout)(vm_offset_t src, void *dest, size_t len);
/* Read from file to module address space, same semantics as read() */
int (*arch_readin)(int fd, vm_offset_t dest, size_t len);
};
extern struct arch_switch archsw;
/*
* XXX these belong in a system header
*/
#define KLD_NAMELEN 32
struct kld_module_dependancy
{
char kd_name[KLD_NAMELEN];
u_int32_t kd_version;
};
struct kld_module_identifier
{
u_int32_t ki_kldversion;
char ki_name[KLD_NAMELEN];
u_int32_t ki_version;
struct kld_module_dependancy *ki_deps;
int ki_ndeps;
size_t ki_depsize;
};
/*
* Use the depsize field in the identifier to correctly index a
* dependancy.
*/
#define KLD_GETDEP(ki, kd, n) (struct kld_module_dependancy *)((char *)(kd) + ((ki)->ki_depsize * (n)))
|
