/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _BOOTSTRAP_H_
#define _BOOTSTRAP_H_
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/linker_set.h>
#include "readin.h"
/* Commands and return values; nonzero return sets command_errmsg != NULL */
typedef int (bootblk_cmd_t)(int argc, char *argv[]);
#define COMMAND_ERRBUFSZ (256)
extern const char *command_errmsg;
extern char command_errbuf[COMMAND_ERRBUFSZ];
#define CMD_OK 0
#define CMD_WARN 1
#define CMD_ERROR 2
#define CMD_CRIT 3
#define CMD_FATAL 4
/* interp.c */
void interact(void);
void interp_emit_prompt(void);
int interp_builtin_cmd(int argc, char *argv[]);
/* Called by interp.c for interp_*.c embedded interpreters */
int interp_include(const char *); /* Execute commands from filename */
void interp_init(void); /* Initialize interpreater */
int interp_run(const char *); /* Run a single command */
/* interp_backslash.c */
char *backslash(const char *str);
/* interp_parse.c */
int parse(int *argc, char ***argv, const char *str);
/* boot.c */
void autoboot_maybe(void);
int getrootmount(char *rootdev);
/* misc.c */
char *unargv(int argc, char *argv[]);
size_t strlenout(vm_offset_t str);
char *strdupout(vm_offset_t str);
void kern_bzero(vm_offset_t dest, size_t len);
int kern_pread(readin_handle_t fd, vm_offset_t dest, size_t len, off_t off);
void *alloc_pread(readin_handle_t fd, off_t off, size_t len);
/* bcache.c */
void bcache_init(size_t nblks, size_t bsize);
void bcache_add_dev(int);
void *bcache_allocate(void);
void bcache_free(void *);
int bcache_strategy(void *devdata, int rw, daddr_t blk, size_t size,
char *buf, size_t *rsize);
/*
* Disk block cache
*/
struct bcache_devdata
{
int (*dv_strategy)(void *, int, daddr_t, size_t, char *, size_t *);
void *dv_devdata;
void *dv_cache;
};
/*
* Modular console support.
*/
struct console
{
const char *c_name;
const char *c_desc;
int c_flags;
#define C_PRESENTIN (1<<0) /* console can provide input */
#define C_PRESENTOUT (1<<1) /* console can provide output */
#define C_ACTIVEIN (1<<2) /* user wants input from console */
#define C_ACTIVEOUT (1<<3) /* user wants output to console */
#define C_WIDEOUT (1<<4) /* c_out routine groks wide chars */
/* set c_flags to match hardware */
void (* c_probe)(struct console *cp);
/* reinit XXX may need more args */
int (* c_init)(int arg);
/* emit c */
void (* c_out)(int c);
/* wait for and return input */
int (* c_in)(void);
/* return nonzero if input waiting */
int (* c_ready)(void);
};
extern struct console *consoles[];
void cons_probe(void);
/*
* Plug-and-play enumerator/configurator interface.
*/
struct pnphandler
{
const char *pp_name; /* handler/bus name */
void (*pp_enumerate)(void); /* enumerate PnP devices, add to chain */
};
struct pnpident
{
/* ASCII identifier, actual format varies with bus/handler */
char *id_ident;
STAILQ_ENTRY(pnpident) id_link;
};
struct pnpinfo
{
char *pi_desc; /* ASCII description, optional */
int pi_revision; /* optional revision (or -1) if not supported */
char *pi_module; /* module/args nominated to handle device */
int pi_argc; /* module arguments */
char **pi_argv;
struct pnphandler *pi_handler; /* handler which detected this device */
STAILQ_HEAD(, pnpident) pi_ident; /* list of identifiers */
STAILQ_ENTRY(pnpinfo) pi_link;
};
STAILQ_HEAD(pnpinfo_stql, pnpinfo);
extern struct pnphandler *pnphandlers[]; /* provided by MD code */
void pnp_addident(struct pnpinfo *pi, char *ident);
struct pnpinfo *pnp_allocinfo(void);
void pnp_freeinfo(struct pnpinfo *pi);
void pnp_addinfo(struct pnpinfo *pi);
char *pnp_eisaformat(uint8_t *data);
/*
* < 0 - No ISA in system
* == 0 - Maybe ISA, search for read data port
* > 0 - ISA in system, value is read data port address
*/
extern int isapnp_readport;
/*
* Version information
*/
extern char bootprog_info[];
/*
* Interpreter information
*/
extern const char bootprog_interp[];
#define INTERP_DEFINE(interpstr) \
const char bootprog_interp[] = "$Interpreter:" interpstr
/*
* Preloaded file metadata header.
*
* Metadata are allocated on our heap, and copied into kernel space
* before executing the kernel.
*/
struct file_metadata
{
size_t md_size;
uint16_t md_type;
struct file_metadata *md_next;
char md_data[1]; /* data are immediately appended */
};
struct preloaded_file;
struct mod_depend;
struct kernel_module
{
char *m_name; /* module name */
int m_version; /* module version */
/* char *m_args; */ /* arguments for the module */
struct preloaded_file *m_fp;
struct kernel_module *m_next;
};
/*
* Preloaded file information. Depending on type, file can contain
* additional units called 'modules'.
*
* At least one file (the kernel) must be loaded in order to boot.
* The kernel is always loaded first.
*
* String fields (m_name, m_type) should be dynamically allocated.
*/
struct preloaded_file
{
char *f_name; /* file name */
char *f_type; /* verbose file type, eg 'ELF kernel', 'pnptable', etc. */
char *f_args; /* arguments for the file */
/* metadata that will be placed in the module directory */
struct file_metadata *f_metadata;
int f_loader; /* index of the loader that read the file */
vm_offset_t f_addr; /* load address */
size_t f_size; /* file size */
struct kernel_module *f_modules; /* list of modules if any */
struct preloaded_file *f_next; /* next file */
};
struct file_format
{
/*
* Load function must return EFTYPE if it can't handle
* the module supplied
*/
int (*l_load)(char *, uint64_t, struct preloaded_file **);
/*
* Only a loader that will load a kernel (first module)
* should have an exec handler
*/
int (*l_exec)(struct preloaded_file *);
};
extern struct file_format *file_formats[]; /* supplied by consumer */
extern struct preloaded_file *preloaded_files;
int mod_load(char *name, struct mod_depend *verinfo, int argc, char *argv[]);
int mod_loadkld(const char *name, int argc, char *argv[]);
void unload(void);
struct preloaded_file *file_alloc(void);
struct preloaded_file *file_findfile(const char *name, const char *type);
struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
struct preloaded_file *file_loadraw(const char *name, char *type, int insert);
void file_discard(struct preloaded_file *fp);
void file_addmetadata(struct preloaded_file *, int, size_t, void *);
int file_addmodule(struct preloaded_file *, char *, int,
struct kernel_module **);
void file_removemetadata(struct preloaded_file *fp);
/* MI module loaders */
#ifdef __elfN
/* Relocation types. */
#define ELF_RELOC_REL 1
#define ELF_RELOC_RELA 2
/* Relocation offset for some architectures */
extern uint64_t __elfN(relocation_offset);
struct elf_file;
typedef Elf_Addr (symaddr_fn)(struct elf_file *ef, Elf_Size symidx);
int __elfN(loadfile)(char *, uint64_t, struct preloaded_file **);
int __elfN(obj_loadfile)(char *, uint64_t, struct preloaded_file **);
int __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr,
const void *reldata, int reltype, Elf_Addr relbase,
Elf_Addr dataaddr, void *data, size_t len);
int __elfN(loadfile_raw)(char *, uint64_t, struct preloaded_file **, int);
int __elfN(load_modmetadata)(struct preloaded_file *, uint64_t);
#endif
/*
* Support for commands
*/
struct bootblk_command
{
const char *c_name;
const char *c_desc;
bootblk_cmd_t *c_fn;
};
#define COMMAND_SET(tag, key, desc, func) \
static bootblk_cmd_t func; \
static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \
DATA_SET(Xcommand_set, _cmd_ ## tag)
SET_DECLARE(Xcommand_set, struct bootblk_command);
/*
* The intention of the architecture switch is to provide a convenient
* encapsulation of the interface between the bootstrap MI and MD code.
* MD code may selectively populate the switch at runtime based on the
* actual configuration of the target system.
*/
struct arch_switch
{
/* Automatically load modules as required by detected hardware */
int (*arch_autoload)(void);
/* Locate the device for (name), return pointer to tail in (*path) */
int (*arch_getdev)(void **dev, const char *name, const char **path);
/*
* Copy from local address space to module address space,
* similar to bcopy()
*/
ssize_t (*arch_copyin)(const void *, vm_offset_t, const size_t);
/*
* Copy to local address space from module address space,
* similar to bcopy()
*/
ssize_t (*arch_copyout)(const vm_offset_t, void *, const size_t);
/* Read from file to module address space, same semantics as read() */
ssize_t (*arch_readin)(readin_handle_t, vm_offset_t, const size_t);
/* Perform ISA byte port I/O (only for systems with ISA) */
int (*arch_isainb)(int port);
void (*arch_isaoutb)(int port, int value);
/*
* Interface to adjust the load address according to the "object"
* being loaded.
*/
uint64_t (*arch_loadaddr)(u_int type, void *data, uint64_t addr);
#define LOAD_ELF 1 /* data points to the ELF header. */
#define LOAD_RAW 2 /* data points to the file name. */
/*
* Interface to inform MD code about a loaded (ELF) segment. This
* can be used to flush caches and/or set up translations.
*/
#ifdef __elfN
void (*arch_loadseg)(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta);
#else
void (*arch_loadseg)(void *eh, void *ph, uint64_t delta);
#endif
/* Probe ZFS pool(s), if needed. */
void (*arch_zfs_probe)(void);
/* Return the hypervisor name/type or NULL if not virtualized. */
const char *(*arch_hypervisor)(void);
/* For kexec-type loaders, get ksegment structure */
void (*arch_kexec_kseg_get)(int *nseg, void **kseg);
};
extern struct arch_switch archsw;
/* This must be provided by the MD code, but should it be in the archsw? */
void delay(int delay);
void dev_cleanup(void);
/*
* nvstore API.
*/
typedef int (nvstore_getter_cb_t)(void *, const char *, void **);
typedef int (nvstore_setter_cb_t)(void *, int, const char *,
const void *, size_t);
typedef int (nvstore_setter_str_cb_t)(void *, const char *, const char *,
const char *);
typedef int (nvstore_unset_cb_t)(void *, const char *);
typedef int (nvstore_print_cb_t)(void *, void *);
typedef int (nvstore_iterate_cb_t)(void *, int (*)(void *, void *));
typedef struct nvs_callbacks {
nvstore_getter_cb_t *nvs_getter;
nvstore_setter_cb_t *nvs_setter;
nvstore_setter_str_cb_t *nvs_setter_str;
nvstore_unset_cb_t *nvs_unset;
nvstore_print_cb_t *nvs_print;
nvstore_iterate_cb_t *nvs_iterate;
} nvs_callbacks_t;
int nvstore_init(const char *, nvs_callbacks_t *, void *);
int nvstore_fini(const char *);
void *nvstore_get_store(const char *);
int nvstore_print(void *);
int nvstore_get_var(void *, const char *, void **);
int nvstore_set_var(void *, int, const char *, void *, size_t);
int nvstore_set_var_from_string(void *, const char *, const char *,
const char *);
int nvstore_unset_var(void *, const char *);
#ifndef CTASSERT
#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
#endif
#endif /* !_BOOTSTRAP_H_ */