2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/boot/common/bootstrap.h,v 1.24.2.4 2001/12/21 22:19:13 jhb Exp $
29 #include <sys/types.h>
30 #include <sys/queue.h>
33 * Generic device specifier; architecture-dependant
34 * versions may be larger, but should be allowed to
47 /* Commands and return values; nonzero return sets command_errmsg != NULL */
48 typedef int (bootblk_cmd_t)(int argc, char *argv[]);
49 extern char *command_errmsg;
50 extern char command_errbuf[]; /* XXX blah, length */
56 int include(const char *filename);
58 /* interp_backslash.c */
59 char *backslash(char *str);
62 int parse(int *argc, char ***argv, char *str);
66 int bf_run(char *line);
69 int autoboot(int timeout, char *prompt);
70 void autoboot_maybe(void);
71 int getrootmount(char *rootdev);
74 char *unargv(int argc, char *argv[]);
75 void hexdump(caddr_t region, size_t len);
76 size_t strlenout(vm_offset_t str);
77 char *strdupout(vm_offset_t str);
80 int bcache_init(u_int nblks, size_t bsize);
81 void bcache_flush(void);
82 int bcache_strategy(void *devdata, int unit, int rw, daddr_t blk,
83 size_t size, char *buf, size_t *rsize);
90 int (*dv_strategy)(void *devdata, int rw, daddr_t blk, size_t size, char *buf, size_t *rsize);
95 * Modular console support.
102 #define C_PRESENTIN (1<<0)
103 #define C_PRESENTOUT (1<<1)
104 #define C_ACTIVEIN (1<<2)
105 #define C_ACTIVEOUT (1<<3)
106 void (* c_probe)(struct console *cp); /* set c_flags to match hardware */
107 int (* c_init)(int arg); /* reinit XXX may need more args */
108 void (* c_out)(int c); /* emit c */
109 int (* c_in)(void); /* wait for and return input */
110 int (* c_ready)(void); /* return nonzer if input waiting */
112 extern struct console *consoles[];
113 void cons_probe(void);
116 * Plug-and-play enumerator/configurator interface.
120 const char *pp_name; /* handler/bus name */
121 void (* pp_enumerate)(void); /* enumerate PnP devices, add to chain */
126 char *id_ident; /* ASCII identifier, actual format varies with bus/handler */
127 STAILQ_ENTRY(pnpident) id_link;
132 char *pi_desc; /* ASCII description, optional */
133 int pi_revision; /* optional revision (or -1) if not supported */
134 char *pi_module; /* module/args nominated to handle device */
135 int pi_argc; /* module arguments */
137 struct pnphandler *pi_handler; /* handler which detected this device */
138 STAILQ_HEAD(,pnpident) pi_ident; /* list of identifiers */
139 STAILQ_ENTRY(pnpinfo) pi_link;
142 extern struct pnphandler *pnphandlers[]; /* provided by MD code */
144 void pnp_addident(struct pnpinfo *pi, char *ident);
145 struct pnpinfo *pnp_allocinfo(void);
146 void pnp_freeinfo(struct pnpinfo *pi);
147 void pnp_addinfo(struct pnpinfo *pi);
148 char *pnp_eisaformat(u_int8_t *data);
151 * < 0 - No ISA in system
152 * == 0 - Maybe ISA, search for read data port
153 * > 0 - ISA in system, value is read data port address
155 extern int isapnp_readport;
158 * Module metadata header.
160 * Metadata are allocated on our heap, and copied into kernel space
161 * before executing the kernel.
163 struct module_metadata
167 struct module_metadata *md_next;
168 char md_data[0]; /* data are immediately appended */
172 * Loaded module information.
174 * At least one module (the kernel) must be loaded in order to boot.
175 * The kernel is always loaded first.
177 * String fields (m_name, m_type) should be dynamically allocated.
181 char *m_name; /* module name */
182 char *m_type; /* verbose module type, eg 'ELF kernel', 'pnptable', etc. */
183 char *m_args; /* arguments for the module */
184 struct module_metadata *m_metadata; /* metadata that will be placed in the module directory */
185 int m_loader; /* index of the loader that read the file */
186 vm_offset_t m_addr; /* load address */
187 size_t m_size; /* module size */
188 struct loaded_module *m_next; /* next module */
193 /* Load function must return EFTYPE if it can't handle the module supplied */
194 int (* l_load)(char *filename, vm_offset_t dest, struct loaded_module **result);
195 /* Only a loader that will load a kernel (first module) should have an exec handler */
196 int (* l_exec)(struct loaded_module *mp);
198 extern struct module_format *module_formats[]; /* supplied by consumer */
199 extern struct loaded_module *loaded_modules;
200 extern int mod_load(char *name, int argc, char *argv[]);
201 extern int mod_loadobj(char *type, char *name);
202 extern struct loaded_module *mod_findmodule(char *name, char *type);
203 extern void mod_addmetadata(struct loaded_module *mp, int type, size_t size, void *p);
204 extern struct module_metadata *mod_findmetadata(struct loaded_module *mp, int type);
205 extern void mod_discard(struct loaded_module *mp);
206 extern struct loaded_module *mod_allocmodule(void);
208 /* MI module loaders */
209 extern int aout_loadmodule(char *filename, vm_offset_t dest, struct loaded_module **result);
210 extern vm_offset_t aout_findsym(char *name, struct loaded_module *mp);
211 extern int elf_loadmodule(char *filename, vm_offset_t dest, struct loaded_module **result);
213 #ifndef NEW_LINKER_SET
214 #include <sys/linker_set.h>
216 /* XXX just for conversion's sake, until we move to the new linker set code */
218 #define SET_FOREACH(pvar, set) \
219 for ((char*) pvar = set.ls_items; \
220 (char*) pvar < (char*) &set.ls_items[set.ls_length]; \
223 #else /* NEW_LINKER_SET */
226 * Private macros, not to be used outside this header file.
228 #define __MAKE_SET(set, sym) \
229 static void *__CONCAT(__setentry,__LINE__) \
230 __attribute__((__section__("set_" #set),__unused__)) = &sym
231 #define __SET_BEGIN(set) \
232 ({ extern void *__CONCAT(__start_set_,set); \
233 &__CONCAT(__start_set_,set); })
234 #define __SET_END(set) \
235 ({ extern void *__CONCAT(__stop_set_,set); \
236 &__CONCAT(__stop_set_,set); })
242 /* Add an entry to a set. */
243 #define DATA_SET(set, sym) __MAKE_SET(set, sym)
246 * Iterate over all the elements of a set.
248 * Sets always contain addresses of things, and "pvar" points to words
249 * containing those addresses. Thus is must be declared as "type **pvar",
250 * and the address of each set item is obtained inside the loop by "*pvar".
252 #define SET_FOREACH(pvar, set) \
253 for (pvar = (__typeof__(pvar))__SET_BEGIN(set); \
254 pvar < (__typeof__(pvar))__SET_END(set); pvar++)
258 * Support for commands
260 struct bootblk_command
267 #define COMMAND_SET(tag, key, desc, func) \
268 static bootblk_cmd_t func; \
269 static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
270 DATA_SET(Xcommand_set, _cmd_ ## tag)
272 extern struct linker_set Xcommand_set;
275 * The intention of the architecture switch is to provide a convenient
276 * encapsulation of the interface between the bootstrap MI and MD code.
277 * MD code may selectively populate the switch at runtime based on the
278 * actual configuration of the target system.
282 /* Automatically load modules as required by detected hardware */
283 int (*arch_autoload)(void);
284 /* Locate the device for (name), return pointer to tail in (*path) */
285 int (*arch_getdev)(void **dev, const char *name, const char **path);
286 /* Copy from local address space to module address space, similar to bcopy() */
287 ssize_t (*arch_copyin)(const void *src, vm_offset_t dest,
289 /* Copy to local address space from module address space, similar to bcopy() */
290 ssize_t (*arch_copyout)(const vm_offset_t src, void *dest,
292 /* Read from file to module address space, same semantics as read() */
293 ssize_t (*arch_readin)(const int fd, vm_offset_t dest,
295 /* Perform ISA byte port I/O (only for systems with ISA) */
296 int (*arch_isainb)(int port);
297 void (*arch_isaoutb)(int port, int value);
299 extern struct arch_switch archsw;
301 /* This must be provided by the MD code, but should it be in the archsw? */
302 void delay(int delay);
304 void dev_cleanup(void);