1 /*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #include <sys/types.h>
30 #include <sys/queue.h>
31 #include <sys/linker_set.h>
32
33 /*
34 * Generic device specifier; architecture-dependant
35 * versions may be larger, but should be allowed to
36 * overlap.
37 */
38 struct devdesc
39 {
40 struct devsw *d_dev;
41 int d_type;
42 #define DEVT_NONE 0
43 #define DEVT_DISK 1
44 #define DEVT_NET 2
45 #define DEVT_CD 3
46 int d_unit;
47 };
48
49 /* Commands and return values; nonzero return sets command_errmsg != NULL */
50 typedef int (bootblk_cmd_t)(int argc, char *argv[]);
51 extern char *command_errmsg;
52 extern char command_errbuf[]; /* XXX blah, length */
53 #define CMD_OK 0
54 #define CMD_ERROR 1
55
56 /* interp.c */
57 void interact(void);
58 int include(const char *filename);
59
60 /* interp_backslash.c */
61 char *backslash(char *str);
62
63 /* interp_parse.c */
64 int parse(int *argc, char ***argv, char *str);
65
66 /* interp_forth.c */
67 void bf_init(void);
68 int bf_run(char *line);
69
70 /* boot.c */
71 int autoboot(int timeout, char *prompt);
72 void autoboot_maybe(void);
73 int getrootmount(char *rootdev);
74
75 /* misc.c */
76 char *unargv(int argc, char *argv[]);
77 void hexdump(caddr_t region, size_t len);
78 size_t strlenout(vm_offset_t str);
79 char *strdupout(vm_offset_t str);
80 void kern_bzero(vm_offset_t dest, size_t len);
81 int kern_pread(int fd, vm_offset_t dest, size_t len, off_t off);
82 void *alloc_pread(int fd, off_t off, size_t len);
83
84 /* bcache.c */
85 int bcache_init(u_int nblks, size_t bsize);
86 void bcache_flush(void);
87 int bcache_strategy(void *devdata, int unit, int rw, daddr_t blk,
88 size_t size, char *buf, size_t *rsize);
89
90 /*
91 * Disk block cache
92 */
93 struct bcache_devdata
94 {
95 int (*dv_strategy)(void *devdata, int rw, daddr_t blk, size_t size, char *buf, size_t *rsize);
96 void *dv_devdata;
97 };
98
99 /*
100 * Modular console support.
101 */
102 struct console
103 {
104 const char *c_name;
105 const char *c_desc;
106 int c_flags;
107 #define C_PRESENTIN (1<<0)
108 #define C_PRESENTOUT (1<<1)
109 #define C_ACTIVEIN (1<<2)
110 #define C_ACTIVEOUT (1<<3)
111 void (* c_probe)(struct console *cp); /* set c_flags to match hardware */
112 int (* c_init)(int arg); /* reinit XXX may need more args */
113 void (* c_out)(int c); /* emit c */
114 int (* c_in)(void); /* wait for and return input */
115 int (* c_ready)(void); /* return nonzer if input waiting */
116 };
117 extern struct console *consoles[];
118 void cons_probe(void);
119
120 /*
121 * Plug-and-play enumerator/configurator interface.
122 */
123 struct pnphandler
124 {
125 const char *pp_name; /* handler/bus name */
126 void (* pp_enumerate)(void); /* enumerate PnP devices, add to chain */
127 };
128
129 struct pnpident
130 {
131 char *id_ident; /* ASCII identifier, actual format varies with bus/handler */
132 STAILQ_ENTRY(pnpident) id_link;
133 };
134
135 struct pnpinfo
136 {
137 char *pi_desc; /* ASCII description, optional */
138 int pi_revision; /* optional revision (or -1) if not supported */
139 char *pi_module; /* module/args nominated to handle device */
140 int pi_argc; /* module arguments */
141 char **pi_argv;
142 struct pnphandler *pi_handler; /* handler which detected this device */
143 STAILQ_HEAD(,pnpident) pi_ident; /* list of identifiers */
144 STAILQ_ENTRY(pnpinfo) pi_link;
145 };
146
147 STAILQ_HEAD(pnpinfo_stql, pnpinfo);
148
149 extern struct pnpinfo_stql pnp_devices;
150
151 extern struct pnphandler *pnphandlers[]; /* provided by MD code */
152
153 void pnp_addident(struct pnpinfo *pi, char *ident);
154 struct pnpinfo *pnp_allocinfo(void);
155 void pnp_freeinfo(struct pnpinfo *pi);
156 void pnp_addinfo(struct pnpinfo *pi);
157 char *pnp_eisaformat(u_int8_t *data);
158
159 /*
160 * < 0 - No ISA in system
161 * == 0 - Maybe ISA, search for read data port
162 * > 0 - ISA in system, value is read data port address
163 */
164 extern int isapnp_readport;
165
166 /*
167 * Preloaded file metadata header.
168 *
169 * Metadata are allocated on our heap, and copied into kernel space
170 * before executing the kernel.
171 */
172 struct file_metadata
173 {
174 size_t md_size;
175 u_int16_t md_type;
176 struct file_metadata *md_next;
177 char md_data[1]; /* data are immediately appended */
178 };
179
180 struct preloaded_file;
181 struct mod_depend;
182
183 struct kernel_module
184 {
185 char *m_name; /* module name */
186 int m_version; /* module version */
187 /* char *m_args;*/ /* arguments for the module */
188 struct preloaded_file *m_fp;
189 struct kernel_module *m_next;
190 };
191
192 /*
193 * Preloaded file information. Depending on type, file can contain
194 * additional units called 'modules'.
195 *
196 * At least one file (the kernel) must be loaded in order to boot.
197 * The kernel is always loaded first.
198 *
199 * String fields (m_name, m_type) should be dynamically allocated.
200 */
201 struct preloaded_file
202 {
203 char *f_name; /* file name */
204 char *f_type; /* verbose file type, eg 'ELF kernel', 'pnptable', etc. */
205 char *f_args; /* arguments for the file */
206 struct file_metadata *f_metadata; /* metadata that will be placed in the module directory */
207 int f_loader; /* index of the loader that read the file */
208 vm_offset_t f_addr; /* load address */
209 size_t f_size; /* file size */
210 struct kernel_module *f_modules; /* list of modules if any */
211 struct preloaded_file *f_next; /* next file */
212 };
213
214 struct file_format
215 {
216 /* Load function must return EFTYPE if it can't handle the module supplied */
217 int (* l_load)(char *filename, u_int64_t dest, struct preloaded_file **result);
218 /* Only a loader that will load a kernel (first module) should have an exec handler */
219 int (* l_exec)(struct preloaded_file *mp);
220 };
221
222 extern struct file_format *file_formats[]; /* supplied by consumer */
223 extern struct preloaded_file *preloaded_files;
224
225 int mod_load(char *name, struct mod_depend *verinfo, int argc, char *argv[]);
226 int mod_loadkld(const char *name, int argc, char *argv[]);
227
228 struct preloaded_file *file_alloc(void);
229 struct preloaded_file *file_findfile(char *name, char *type);
230 struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
231 void file_discard(struct preloaded_file *fp);
232 void file_addmetadata(struct preloaded_file *fp, int type, size_t size, void *p);
233 int file_addmodule(struct preloaded_file *fp, char *modname, int version,
234 struct kernel_module **newmp);
235
236
237 /* MI module loaders */
238 #ifdef __elfN
239 /* Relocation types. */
240 #define ELF_RELOC_REL 1
241 #define ELF_RELOC_RELA 2
242
243 struct elf_file;
244 typedef Elf_Addr (symaddr_fn)(struct elf_file *ef, Elf_Size symidx);
245
246 int __elfN(loadfile)(char *filename, u_int64_t dest, struct preloaded_file **result);
247 int __elfN(obj_loadfile)(char *filename, u_int64_t dest,
248 struct preloaded_file **result);
249 int __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr,
250 const void *reldata, int reltype, Elf_Addr relbase,
251 Elf_Addr dataaddr, void *data, size_t len);
252 #endif
253
254 /*
255 * Support for commands
256 */
257 struct bootblk_command
258 {
259 const char *c_name;
260 const char *c_desc;
261 bootblk_cmd_t *c_fn;
262 };
263
264 #define COMMAND_SET(tag, key, desc, func) \
265 static bootblk_cmd_t func; \
266 static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
267 DATA_SET(Xcommand_set, _cmd_ ## tag)
268
269 SET_DECLARE(Xcommand_set, struct bootblk_command);
270
271 /*
272 * The intention of the architecture switch is to provide a convenient
273 * encapsulation of the interface between the bootstrap MI and MD code.
274 * MD code may selectively populate the switch at runtime based on the
275 * actual configuration of the target system.
276 */
277 struct arch_switch
278 {
279 /* Automatically load modules as required by detected hardware */
280 int (*arch_autoload)(void);
281 /* Locate the device for (name), return pointer to tail in (*path) */
282 int (*arch_getdev)(void **dev, const char *name, const char **path);
283 /* Copy from local address space to module address space, similar to bcopy() */
284 ssize_t (*arch_copyin)(const void *src, vm_offset_t dest,
285 const size_t len);
286 /* Copy to local address space from module address space, similar to bcopy() */
287 ssize_t (*arch_copyout)(const vm_offset_t src, void *dest,
288 const size_t len);
289 /* Read from file to module address space, same semantics as read() */
290 ssize_t (*arch_readin)(const int fd, vm_offset_t dest,
291 const size_t len);
292 /* Perform ISA byte port I/O (only for systems with ISA) */
293 int (*arch_isainb)(int port);
294 void (*arch_isaoutb)(int port, int value);
295 /* Pass in initial kernel memory size */
296 void (*arch_maphint)(vm_offset_t va, size_t len);
297 };
298 extern struct arch_switch archsw;
299
300 /* This must be provided by the MD code, but should it be in the archsw? */
301 void delay(int delay);
302
303 void dev_cleanup(void);
304
305 time_t time(time_t *tloc);
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