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[]);
56 /* Called by interp.c for interp_*.c embedded interpreters */
57 int interp_include(const char *); /* Execute commands from filename */
58 void interp_init(void); /* Initialize interpreater */
59 int interp_run(const char *); /* Run a single command */
61 /* interp_backslash.c */
62 char *backslash(const char *str);
65 int parse(int *argc, char ***argv, const char *str);
68 void autoboot_maybe(void);
69 int getrootmount(char *rootdev);
72 char *unargv(int argc, char *argv[]);
73 size_t strlenout(vm_offset_t str);
74 char *strdupout(vm_offset_t str);
75 void kern_bzero(vm_offset_t dest, size_t len);
76 int kern_pread(readin_handle_t fd, vm_offset_t dest, size_t len, off_t off);
77 void *alloc_pread(readin_handle_t fd, off_t off, size_t len);
80 void bcache_init(size_t nblks, size_t bsize);
81 void bcache_add_dev(int);
82 void *bcache_allocate(void);
83 void bcache_free(void *);
84 int bcache_strategy(void *devdata, int rw, daddr_t blk, size_t size,
85 char *buf, size_t *rsize);
92 int (*dv_strategy)(void *, int, daddr_t, size_t, char *, size_t *);
98 * Modular console support.
105 #define C_PRESENTIN (1<<0) /* console can provide input */
106 #define C_PRESENTOUT (1<<1) /* console can provide output */
107 #define C_ACTIVEIN (1<<2) /* user wants input from console */
108 #define C_ACTIVEOUT (1<<3) /* user wants output to console */
109 #define C_WIDEOUT (1<<4) /* c_out routine groks wide chars */
111 /* set c_flags to match hardware */
112 void (* c_probe)(struct console *cp);
113 /* reinit XXX may need more args */
114 int (* c_init)(int arg);
116 void (* c_out)(int c);
117 /* wait for and return input */
119 /* return nonzero if input waiting */
120 int (* c_ready)(void);
122 extern struct console *consoles[];
123 void cons_probe(void);
124 bool cons_update_mode(bool);
125 void autoload_font(bool);
128 * Plug-and-play enumerator/configurator interface.
132 const char *pp_name; /* handler/bus name */
133 void (*pp_enumerate)(void); /* enumerate PnP devices, add to chain */
138 /* ASCII identifier, actual format varies with bus/handler */
140 STAILQ_ENTRY(pnpident) id_link;
145 char *pi_desc; /* ASCII description, optional */
146 int pi_revision; /* optional revision (or -1) if not supported */
147 char *pi_module; /* module/args nominated to handle device */
148 int pi_argc; /* module arguments */
150 struct pnphandler *pi_handler; /* handler which detected this device */
151 STAILQ_HEAD(, pnpident) pi_ident; /* list of identifiers */
152 STAILQ_ENTRY(pnpinfo) pi_link;
155 STAILQ_HEAD(pnpinfo_stql, pnpinfo);
157 extern struct pnphandler *pnphandlers[]; /* provided by MD code */
159 void pnp_addident(struct pnpinfo *pi, char *ident);
160 struct pnpinfo *pnp_allocinfo(void);
161 void pnp_freeinfo(struct pnpinfo *pi);
162 void pnp_addinfo(struct pnpinfo *pi);
163 char *pnp_eisaformat(uint8_t *data);
166 * < 0 - No ISA in system
167 * == 0 - Maybe ISA, search for read data port
168 * > 0 - ISA in system, value is read data port address
170 extern int isapnp_readport;
173 * Version information
175 extern char bootprog_info[];
178 * Interpreter information
180 extern const char bootprog_interp[];
181 #define INTERP_DEFINE(interpstr) \
182 const char bootprog_interp[] = "$Interpreter:" interpstr
186 * Preloaded file metadata header.
188 * Metadata are allocated on our heap, and copied into kernel space
189 * before executing the kernel.
195 struct file_metadata *md_next;
196 char md_data[1]; /* data are immediately appended */
199 struct preloaded_file;
204 char *m_name; /* module name */
205 int m_version; /* module version */
206 /* char *m_args; */ /* arguments for the module */
207 struct preloaded_file *m_fp;
208 struct kernel_module *m_next;
212 * Preloaded file information. Depending on type, file can contain
213 * additional units called 'modules'.
215 * At least one file (the kernel) must be loaded in order to boot.
216 * The kernel is always loaded first.
218 * String fields (m_name, m_type) should be dynamically allocated.
220 struct preloaded_file
222 char *f_name; /* file name */
223 char *f_type; /* verbose file type, eg 'ELF kernel', 'pnptable', etc. */
224 char *f_args; /* arguments for the file */
225 /* metadata that will be placed in the module directory */
226 struct file_metadata *f_metadata;
227 int f_loader; /* index of the loader that read the file */
228 vm_offset_t f_addr; /* load address */
229 size_t f_size; /* file size */
230 struct kernel_module *f_modules; /* list of modules if any */
231 struct preloaded_file *f_next; /* next file */
233 bool f_kernphys_relocatable;
235 #if defined(__i386__)
236 bool f_tg_kernel_support;
243 * Load function must return EFTYPE if it can't handle
244 * the module supplied
246 int (*l_load)(char *, uint64_t, struct preloaded_file **);
248 * Only a loader that will load a kernel (first module)
249 * should have an exec handler
251 int (*l_exec)(struct preloaded_file *);
254 extern struct file_format *file_formats[]; /* supplied by consumer */
255 extern struct preloaded_file *preloaded_files;
257 int mod_load(char *name, struct mod_depend *verinfo, int argc, char *argv[]);
258 int mod_loadkld(const char *name, int argc, char *argv[]);
261 struct preloaded_file *file_alloc(void);
262 struct preloaded_file *file_findfile(const char *name, const char *type);
263 struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
264 struct preloaded_file *file_loadraw(const char *name, char *type, int insert);
265 void file_discard(struct preloaded_file *fp);
266 void file_addmetadata(struct preloaded_file *, int, size_t, void *);
267 int file_addmodule(struct preloaded_file *, char *, int,
268 struct kernel_module **);
269 void file_removemetadata(struct preloaded_file *fp);
270 int file_addbuf(const char *name, const char *type, size_t len, void *buf);
271 int tslog_init(void);
272 int tslog_publish(void);
274 vm_offset_t build_font_module(vm_offset_t);
276 /* MI module loaders */
278 /* Relocation types. */
279 #define ELF_RELOC_REL 1
280 #define ELF_RELOC_RELA 2
282 /* Relocation offset for some architectures */
283 extern uint64_t __elfN(relocation_offset);
286 typedef Elf_Addr (symaddr_fn)(struct elf_file *ef, Elf_Size symidx);
288 int __elfN(loadfile)(char *, uint64_t, struct preloaded_file **);
289 int __elfN(obj_loadfile)(char *, uint64_t, struct preloaded_file **);
290 int __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr,
291 const void *reldata, int reltype, Elf_Addr relbase,
292 Elf_Addr dataaddr, void *data, size_t len);
293 int __elfN(loadfile_raw)(char *, uint64_t, struct preloaded_file **, int);
294 int __elfN(load_modmetadata)(struct preloaded_file *, uint64_t);
298 * Support for commands
300 struct bootblk_command
307 #define COMMAND_SET(tag, key, desc, func) \
308 static bootblk_cmd_t func; \
309 static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
310 DATA_SET(Xcommand_set, _cmd_ ## tag)
312 SET_DECLARE(Xcommand_set, struct bootblk_command);
315 * The intention of the architecture switch is to provide a convenient
316 * encapsulation of the interface between the bootstrap MI and MD code.
317 * MD code may selectively populate the switch at runtime based on the
318 * actual configuration of the target system.
322 /* Automatically load modules as required by detected hardware */
323 int (*arch_autoload)(void);
324 /* Locate the device for (name), return pointer to tail in (*path) */
325 int (*arch_getdev)(void **dev, const char *name, const char **path);
327 * Copy from local address space to module address space,
330 ssize_t (*arch_copyin)(const void *, vm_offset_t, const size_t);
332 * Copy to local address space from module address space,
335 ssize_t (*arch_copyout)(const vm_offset_t, void *, const size_t);
336 /* Read from file to module address space, same semantics as read() */
337 ssize_t (*arch_readin)(readin_handle_t, vm_offset_t, const size_t);
338 /* Perform ISA byte port I/O (only for systems with ISA) */
339 int (*arch_isainb)(int port);
340 void (*arch_isaoutb)(int port, int value);
343 * Interface to adjust the load address according to the "object"
346 uint64_t (*arch_loadaddr)(u_int type, void *data, uint64_t addr);
347 #define LOAD_ELF 1 /* data points to the ELF header. */
348 #define LOAD_RAW 2 /* data points to the file name. */
351 * Interface to inform MD code about a loaded (ELF) segment. This
352 * can be used to flush caches and/or set up translations.
355 void (*arch_loadseg)(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta);
357 void (*arch_loadseg)(void *eh, void *ph, uint64_t delta);
360 /* Probe ZFS pool(s), if needed. */
361 void (*arch_zfs_probe)(void);
363 /* Return the hypervisor name/type or NULL if not virtualized. */
364 const char *(*arch_hypervisor)(void);
366 /* For kexec-type loaders, get ksegment structure */
367 void (*arch_kexec_kseg_get)(int *nseg, void **kseg);
369 extern struct arch_switch archsw;
371 /* This must be provided by the MD code, but should it be in the archsw? */
372 void delay(int delay);
374 void dev_cleanup(void);
379 typedef int (nvstore_getter_cb_t)(void *, const char *, void **);
380 typedef int (nvstore_setter_cb_t)(void *, int, const char *,
381 const void *, size_t);
382 typedef int (nvstore_setter_str_cb_t)(void *, const char *, const char *,
384 typedef int (nvstore_unset_cb_t)(void *, const char *);
385 typedef int (nvstore_print_cb_t)(void *, void *);
386 typedef int (nvstore_iterate_cb_t)(void *, int (*)(void *, void *));
388 typedef struct nvs_callbacks {
389 nvstore_getter_cb_t *nvs_getter;
390 nvstore_setter_cb_t *nvs_setter;
391 nvstore_setter_str_cb_t *nvs_setter_str;
392 nvstore_unset_cb_t *nvs_unset;
393 nvstore_print_cb_t *nvs_print;
394 nvstore_iterate_cb_t *nvs_iterate;
397 int nvstore_init(const char *, nvs_callbacks_t *, void *);
398 int nvstore_fini(const char *);
399 void *nvstore_get_store(const char *);
400 int nvstore_print(void *);
401 int nvstore_get_var(void *, const char *, void **);
402 int nvstore_set_var(void *, int, const char *, void *, size_t);
403 int nvstore_set_var_from_string(void *, const char *, const char *,
405 int nvstore_unset_var(void *, const char *);
407 /* common code to set currdev variable. */
408 extern int mount_currdev(struct env_var *, int, const void *);
411 #define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
414 #endif /* !_BOOTSTRAP_H_ */