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
33 #include <sys/types.h>
34 #include <sys/queue.h>
35 #include <sys/linker_set.h>
40 /* Commands and return values; nonzero return sets command_errmsg != NULL */
41 typedef int (bootblk_cmd_t)(int argc, char *argv[]);
42 #define COMMAND_ERRBUFSZ (256)
43 extern const char *command_errmsg;
44 extern char command_errbuf[COMMAND_ERRBUFSZ];
53 void interp_emit_prompt(void);
54 int interp_builtin_cmd(int argc, char *argv[]);
55 bool interp_has_builtin_cmd(const char *cmd);
57 /* Called by interp.c for interp_*.c embedded interpreters */
58 int interp_include(const char *); /* Execute commands from filename */
59 void interp_init(void); /* Initialize interpreater */
60 int interp_run(const char *); /* Run a single command */
62 /* interp_backslash.c */
63 char *backslash(const char *str);
66 int parse(int *argc, char ***argv, const char *str);
69 void autoboot_maybe(void);
70 int getrootmount(char *rootdev);
73 char *unargv(int argc, char *argv[]);
74 size_t strlenout(vm_offset_t str);
75 char *strdupout(vm_offset_t str);
76 void kern_bzero(vm_offset_t dest, size_t len);
77 int kern_pread(readin_handle_t fd, vm_offset_t dest, size_t len, off_t off);
78 void *alloc_pread(readin_handle_t fd, off_t off, size_t len);
81 void bcache_init(size_t nblks, size_t bsize);
82 void bcache_add_dev(int);
83 void *bcache_allocate(void);
84 void bcache_free(void *);
85 int bcache_strategy(void *devdata, int rw, daddr_t blk, size_t size,
86 char *buf, size_t *rsize);
93 int (*dv_strategy)(void *, int, daddr_t, size_t, char *, size_t *);
99 * Modular console support.
106 #define C_PRESENTIN (1<<0) /* console can provide input */
107 #define C_PRESENTOUT (1<<1) /* console can provide output */
108 #define C_ACTIVEIN (1<<2) /* user wants input from console */
109 #define C_ACTIVEOUT (1<<3) /* user wants output to console */
110 #define C_WIDEOUT (1<<4) /* c_out routine groks wide chars */
112 /* set c_flags to match hardware */
113 void (* c_probe)(struct console *cp);
114 /* reinit XXX may need more args */
115 int (* c_init)(int arg);
117 void (* c_out)(int c);
118 /* wait for and return input */
120 /* return nonzero if input waiting */
121 int (* c_ready)(void);
123 extern struct console *consoles[];
124 void cons_probe(void);
125 bool cons_update_mode(bool);
126 void autoload_font(bool);
128 extern int module_verbose;
130 MODULE_VERBOSE_SILENT, /* say nothing */
131 MODULE_VERBOSE_SIZE, /* print name and size */
132 MODULE_VERBOSE_TWIDDLE, /* show progress */
133 MODULE_VERBOSE_FULL, /* all we have */
137 * Plug-and-play enumerator/configurator interface.
141 const char *pp_name; /* handler/bus name */
142 void (*pp_enumerate)(void); /* enumerate PnP devices, add to chain */
147 /* ASCII identifier, actual format varies with bus/handler */
149 STAILQ_ENTRY(pnpident) id_link;
154 char *pi_desc; /* ASCII description, optional */
155 int pi_revision; /* optional revision (or -1) if not supported */
156 char *pi_module; /* module/args nominated to handle device */
157 int pi_argc; /* module arguments */
159 struct pnphandler *pi_handler; /* handler which detected this device */
160 STAILQ_HEAD(, pnpident) pi_ident; /* list of identifiers */
161 STAILQ_ENTRY(pnpinfo) pi_link;
164 STAILQ_HEAD(pnpinfo_stql, pnpinfo);
166 extern struct pnphandler *pnphandlers[]; /* provided by MD code */
168 void pnp_addident(struct pnpinfo *pi, char *ident);
169 struct pnpinfo *pnp_allocinfo(void);
170 void pnp_freeinfo(struct pnpinfo *pi);
171 void pnp_addinfo(struct pnpinfo *pi);
172 char *pnp_eisaformat(uint8_t *data);
175 * < 0 - No ISA in system
176 * == 0 - Maybe ISA, search for read data port
177 * > 0 - ISA in system, value is read data port address
179 extern int isapnp_readport;
182 * Version information
184 extern char bootprog_info[];
185 extern unsigned bootprog_rev;
188 * Interpreter information
190 extern const char bootprog_interp[];
191 #define INTERP_DEFINE(interpstr) \
192 const char bootprog_interp[] = "$Interpreter:" interpstr
196 * Preloaded file metadata header.
198 * Metadata are allocated on our heap, and copied into kernel space
199 * before executing the kernel.
205 vm_offset_t md_addr; /* Valid after copied to kernel space */
206 struct file_metadata *md_next;
207 char md_data[1]; /* data are immediately appended */
210 struct preloaded_file;
215 char *m_name; /* module name */
216 int m_version; /* module version */
217 /* char *m_args; */ /* arguments for the module */
218 struct preloaded_file *m_fp;
219 struct kernel_module *m_next;
223 * Preloaded file information. Depending on type, file can contain
224 * additional units called 'modules'.
226 * At least one file (the kernel) must be loaded in order to boot.
227 * The kernel is always loaded first.
229 * String fields (m_name, m_type) should be dynamically allocated.
231 struct preloaded_file
233 char *f_name; /* file name */
234 char *f_type; /* verbose file type, eg 'ELF kernel', 'pnptable', etc. */
235 char *f_args; /* arguments for the file */
236 /* metadata that will be placed in the module directory */
237 struct file_metadata *f_metadata;
238 int f_loader; /* index of the loader that read the file */
239 vm_offset_t f_addr; /* load address */
240 size_t f_size; /* file size */
241 struct kernel_module *f_modules; /* list of modules if any */
242 struct preloaded_file *f_next; /* next file */
244 bool f_kernphys_relocatable;
246 #if defined(__i386__)
247 bool f_tg_kernel_support;
254 * Load function must return EFTYPE if it can't handle
255 * the module supplied
257 int (*l_load)(char *, uint64_t, struct preloaded_file **);
259 * Only a loader that will load a kernel (first module)
260 * should have an exec handler
262 int (*l_exec)(struct preloaded_file *);
265 extern struct file_format *file_formats[]; /* supplied by consumer */
266 extern struct preloaded_file *preloaded_files;
268 int mod_load(char *name, struct mod_depend *verinfo, int argc, char *argv[]);
269 int mod_loadkld(const char *name, int argc, char *argv[]);
272 struct preloaded_file *file_alloc(void);
273 struct preloaded_file *file_findfile(const char *name, const char *type);
274 struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
275 struct preloaded_file *file_loadraw(const char *name, char *type, int insert);
276 void file_discard(struct preloaded_file *fp);
277 void file_addmetadata(struct preloaded_file *, int, size_t, void *);
278 int file_addmodule(struct preloaded_file *, char *, int,
279 struct kernel_module **);
280 void file_removemetadata(struct preloaded_file *fp);
281 int file_addbuf(const char *name, const char *type, size_t len, void *buf);
282 int tslog_init(void);
283 int tslog_publish(void);
285 vm_offset_t build_font_module(vm_offset_t);
287 /* MI module loaders */
289 /* Relocation types. */
290 #define ELF_RELOC_REL 1
291 #define ELF_RELOC_RELA 2
293 /* Relocation offset for some architectures */
294 extern uint64_t __elfN(relocation_offset);
297 typedef Elf_Addr (symaddr_fn)(struct elf_file *ef, Elf_Size symidx);
299 int __elfN(loadfile)(char *, uint64_t, struct preloaded_file **);
300 int __elfN(obj_loadfile)(char *, uint64_t, struct preloaded_file **);
301 int __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr,
302 const void *reldata, int reltype, Elf_Addr relbase,
303 Elf_Addr dataaddr, void *data, size_t len);
304 int __elfN(loadfile_raw)(char *, uint64_t, struct preloaded_file **, int);
305 int __elfN(load_modmetadata)(struct preloaded_file *, uint64_t);
309 * Support for commands
311 struct bootblk_command
318 #define COMMAND_SET(tag, key, desc, func) \
319 static bootblk_cmd_t func; \
320 static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
321 DATA_SET(Xcommand_set, _cmd_ ## tag)
323 SET_DECLARE(Xcommand_set, struct bootblk_command);
326 * The intention of the architecture switch is to provide a convenient
327 * encapsulation of the interface between the bootstrap MI and MD code.
328 * MD code may selectively populate the switch at runtime based on the
329 * actual configuration of the target system.
333 /* Automatically load modules as required by detected hardware */
334 int (*arch_autoload)(void);
335 /* Locate the device for (name), return pointer to tail in (*path) */
336 int (*arch_getdev)(void **dev, const char *name, const char **path);
338 * Copy from local address space to module address space,
341 ssize_t (*arch_copyin)(const void *, vm_offset_t, const size_t);
343 * Copy to local address space from module address space,
346 ssize_t (*arch_copyout)(const vm_offset_t, void *, const size_t);
347 /* Read from file to module address space, same semantics as read() */
348 ssize_t (*arch_readin)(readin_handle_t, vm_offset_t, const size_t);
349 /* Perform ISA byte port I/O (only for systems with ISA) */
350 int (*arch_isainb)(int port);
351 void (*arch_isaoutb)(int port, int value);
354 * Interface to adjust the load address according to the "object"
357 uint64_t (*arch_loadaddr)(u_int type, void *data, uint64_t addr);
358 #define LOAD_ELF 1 /* data points to the ELF header. */
359 #define LOAD_RAW 2 /* data points to the file name. */
362 * Interface to inform MD code about a loaded (ELF) segment. This
363 * can be used to flush caches and/or set up translations.
366 void (*arch_loadseg)(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta);
368 void (*arch_loadseg)(void *eh, void *ph, uint64_t delta);
371 /* Probe ZFS pool(s), if needed. */
372 void (*arch_zfs_probe)(void);
374 /* Return the hypervisor name/type or NULL if not virtualized. */
375 const char *(*arch_hypervisor)(void);
377 extern struct arch_switch archsw;
379 /* This must be provided by the MD code, but should it be in the archsw? */
380 void delay(int delay);
382 /* common code to set currdev variable. */
383 int gen_setcurrdev(struct env_var *ev, int flags, const void *value);
384 int mount_currdev(struct env_var *, int, const void *);
385 void set_currdev(const char *devname);
388 #define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
391 #endif /* !_BOOTSTRAP_H_ */