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
32 #include <sys/types.h>
33 #include <sys/queue.h>
34 #include <sys/linker_set.h>
38 /* Commands and return values; nonzero return sets command_errmsg != NULL */
39 typedef int (bootblk_cmd_t)(int argc, char *argv[]);
40 #define COMMAND_ERRBUFSZ (256)
41 extern const char *command_errmsg;
42 extern char command_errbuf[COMMAND_ERRBUFSZ];
51 void interp_emit_prompt(void);
52 int interp_builtin_cmd(int argc, char *argv[]);
54 /* Called by interp.c for interp_*.c embedded interpreters */
55 int interp_include(const char *); /* Execute commands from filename */
56 void interp_init(void); /* Initialize interpreater */
57 int interp_run(const char *); /* Run a single command */
59 /* interp_backslash.c */
60 char *backslash(const char *str);
63 int parse(int *argc, char ***argv, const char *str);
66 void autoboot_maybe(void);
67 int getrootmount(char *rootdev);
70 char *unargv(int argc, char *argv[]);
71 void hexdump(caddr_t region, size_t len);
72 size_t strlenout(vm_offset_t str);
73 char *strdupout(vm_offset_t str);
74 void kern_bzero(vm_offset_t dest, size_t len);
75 int kern_pread(readin_handle_t fd, vm_offset_t dest, size_t len, off_t off);
76 void *alloc_pread(readin_handle_t fd, off_t off, size_t len);
79 void bcache_init(size_t nblks, size_t bsize);
80 void bcache_add_dev(int);
81 void *bcache_allocate(void);
82 void bcache_free(void *);
83 int bcache_strategy(void *devdata, int rw, daddr_t blk, size_t size,
84 char *buf, size_t *rsize);
91 int (*dv_strategy)(void *, int, daddr_t, size_t, char *, size_t *);
97 * Modular console support.
104 #define C_PRESENTIN (1<<0) /* console can provide input */
105 #define C_PRESENTOUT (1<<1) /* console can provide output */
106 #define C_ACTIVEIN (1<<2) /* user wants input from console */
107 #define C_ACTIVEOUT (1<<3) /* user wants output to console */
108 #define C_WIDEOUT (1<<4) /* c_out routine groks wide chars */
110 /* set c_flags to match hardware */
111 void (* c_probe)(struct console *cp);
112 /* reinit XXX may need more args */
113 int (* c_init)(int arg);
115 void (* c_out)(int c);
116 /* wait for and return input */
118 /* return nonzero if input waiting */
119 int (* c_ready)(void);
121 extern struct console *consoles[];
122 void cons_probe(void);
125 * Plug-and-play enumerator/configurator interface.
129 const char *pp_name; /* handler/bus name */
130 void (*pp_enumerate)(void); /* enumerate PnP devices, add to chain */
135 /* ASCII identifier, actual format varies with bus/handler */
137 STAILQ_ENTRY(pnpident) id_link;
142 char *pi_desc; /* ASCII description, optional */
143 int pi_revision; /* optional revision (or -1) if not supported */
144 char *pi_module; /* module/args nominated to handle device */
145 int pi_argc; /* module arguments */
147 struct pnphandler *pi_handler; /* handler which detected this device */
148 STAILQ_HEAD(, pnpident) pi_ident; /* list of identifiers */
149 STAILQ_ENTRY(pnpinfo) pi_link;
152 STAILQ_HEAD(pnpinfo_stql, pnpinfo);
154 extern struct pnphandler *pnphandlers[]; /* provided by MD code */
156 void pnp_addident(struct pnpinfo *pi, char *ident);
157 struct pnpinfo *pnp_allocinfo(void);
158 void pnp_freeinfo(struct pnpinfo *pi);
159 void pnp_addinfo(struct pnpinfo *pi);
160 char *pnp_eisaformat(uint8_t *data);
163 * < 0 - No ISA in system
164 * == 0 - Maybe ISA, search for read data port
165 * > 0 - ISA in system, value is read data port address
167 extern int isapnp_readport;
170 * Version information
172 extern char bootprog_info[];
175 * Interpreter information
177 extern const char bootprog_interp[];
178 #define INTERP_DEFINE(interpstr) \
179 const char bootprog_interp[] = "$Interpreter:" interpstr
183 * Preloaded file metadata header.
185 * Metadata are allocated on our heap, and copied into kernel space
186 * before executing the kernel.
192 struct file_metadata *md_next;
193 char md_data[1]; /* data are immediately appended */
196 struct preloaded_file;
201 char *m_name; /* module name */
202 int m_version; /* module version */
203 /* char *m_args; */ /* arguments for the module */
204 struct preloaded_file *m_fp;
205 struct kernel_module *m_next;
209 * Preloaded file information. Depending on type, file can contain
210 * additional units called 'modules'.
212 * At least one file (the kernel) must be loaded in order to boot.
213 * The kernel is always loaded first.
215 * String fields (m_name, m_type) should be dynamically allocated.
217 struct preloaded_file
219 char *f_name; /* file name */
220 char *f_type; /* verbose file type, eg 'ELF kernel', 'pnptable', etc. */
221 char *f_args; /* arguments for the file */
222 /* metadata that will be placed in the module directory */
223 struct file_metadata *f_metadata;
224 int f_loader; /* index of the loader that read the file */
225 vm_offset_t f_addr; /* load address */
226 size_t f_size; /* file size */
227 struct kernel_module *f_modules; /* list of modules if any */
228 struct preloaded_file *f_next; /* next file */
234 * Load function must return EFTYPE if it can't handle
235 * the module supplied
237 int (*l_load)(char *, uint64_t, struct preloaded_file **);
239 * Only a loader that will load a kernel (first module)
240 * should have an exec handler
242 int (*l_exec)(struct preloaded_file *);
245 extern struct file_format *file_formats[]; /* supplied by consumer */
246 extern struct preloaded_file *preloaded_files;
248 int mod_load(char *name, struct mod_depend *verinfo, int argc, char *argv[]);
249 int mod_loadkld(const char *name, int argc, char *argv[]);
252 struct preloaded_file *file_alloc(void);
253 struct preloaded_file *file_findfile(const char *name, const char *type);
254 struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
255 struct preloaded_file *file_loadraw(const char *name, char *type, int insert);
256 void file_discard(struct preloaded_file *fp);
257 void file_addmetadata(struct preloaded_file *, int, size_t, void *);
258 int file_addmodule(struct preloaded_file *, char *, int,
259 struct kernel_module **);
260 void file_removemetadata(struct preloaded_file *fp);
262 /* MI module loaders */
264 /* Relocation types. */
265 #define ELF_RELOC_REL 1
266 #define ELF_RELOC_RELA 2
268 /* Relocation offset for some architectures */
269 extern uint64_t __elfN(relocation_offset);
272 typedef Elf_Addr (symaddr_fn)(struct elf_file *ef, Elf_Size symidx);
274 int __elfN(loadfile)(char *, uint64_t, struct preloaded_file **);
275 int __elfN(obj_loadfile)(char *, uint64_t, struct preloaded_file **);
276 int __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr,
277 const void *reldata, int reltype, Elf_Addr relbase,
278 Elf_Addr dataaddr, void *data, size_t len);
279 int __elfN(loadfile_raw)(char *, uint64_t, struct preloaded_file **, int);
280 int __elfN(load_modmetadata)(struct preloaded_file *, uint64_t);
284 * Support for commands
286 struct bootblk_command
293 #define COMMAND_SET(tag, key, desc, func) \
294 static bootblk_cmd_t func; \
295 static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
296 DATA_SET(Xcommand_set, _cmd_ ## tag)
298 SET_DECLARE(Xcommand_set, struct bootblk_command);
301 * The intention of the architecture switch is to provide a convenient
302 * encapsulation of the interface between the bootstrap MI and MD code.
303 * MD code may selectively populate the switch at runtime based on the
304 * actual configuration of the target system.
308 /* Automatically load modules as required by detected hardware */
309 int (*arch_autoload)(void);
310 /* Locate the device for (name), return pointer to tail in (*path) */
311 int (*arch_getdev)(void **dev, const char *name, const char **path);
313 * Copy from local address space to module address space,
316 ssize_t (*arch_copyin)(const void *, vm_offset_t, const size_t);
318 * Copy to local address space from module address space,
321 ssize_t (*arch_copyout)(const vm_offset_t, void *, const size_t);
322 /* Read from file to module address space, same semantics as read() */
323 ssize_t (*arch_readin)(readin_handle_t, vm_offset_t, const size_t);
324 /* Perform ISA byte port I/O (only for systems with ISA) */
325 int (*arch_isainb)(int port);
326 void (*arch_isaoutb)(int port, int value);
329 * Interface to adjust the load address according to the "object"
332 uint64_t (*arch_loadaddr)(u_int type, void *data, uint64_t addr);
333 #define LOAD_ELF 1 /* data points to the ELF header. */
334 #define LOAD_RAW 2 /* data points to the file name. */
337 * Interface to inform MD code about a loaded (ELF) segment. This
338 * can be used to flush caches and/or set up translations.
341 void (*arch_loadseg)(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta);
343 void (*arch_loadseg)(void *eh, void *ph, uint64_t delta);
346 /* Probe ZFS pool(s), if needed. */
347 void (*arch_zfs_probe)(void);
349 /* Return the hypervisor name/type or NULL if not virtualized. */
350 const char *(*arch_hypervisor)(void);
352 /* For kexec-type loaders, get ksegment structure */
353 void (*arch_kexec_kseg_get)(int *nseg, void **kseg);
355 extern struct arch_switch archsw;
357 /* This must be provided by the MD code, but should it be in the archsw? */
358 void delay(int delay);
360 void dev_cleanup(void);
363 #define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
366 #endif /* !_BOOTSTRAP_H_ */