FreeBSD-5.3/sys/boot/common/bootstrap.h
/*-
* 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: src/sys/boot/common/bootstrap.h,v 1.38.6.1 2004/09/03 19:25:40 iedowse Exp $
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/linker_set.h>
/*
* Generic device specifier; architecture-dependant
* versions may be larger, but should be allowed to
* overlap.
*/
struct devdesc
{
struct devsw *d_dev;
int d_type;
#define DEVT_NONE 0
#define DEVT_DISK 1
#define DEVT_NET 2
#define DEVT_CD 3
};
/* Commands and return values; nonzero return sets command_errmsg != NULL */
typedef int (bootblk_cmd_t)(int argc, char *argv[]);
extern char *command_errmsg;
extern char command_errbuf[]; /* XXX blah, length */
#define CMD_OK 0
#define CMD_ERROR 1
/* interp.c */
void interact(void);
int include(const char *filename);
/* interp_backslash.c */
char *backslash(char *str);
/* interp_parse.c */
int parse(int *argc, char ***argv, char *str);
/* interp_forth.c */
void bf_init(void);
int bf_run(char *line);
/* boot.c */
int autoboot(int timeout, char *prompt);
void autoboot_maybe(void);
int getrootmount(char *rootdev);
/* misc.c */
char *unargv(int argc, char *argv[]);
void hexdump(caddr_t region, size_t len);
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(int fd, vm_offset_t dest, size_t len, off_t off);
void *alloc_pread(int fd, off_t off, size_t len);
/* bcache.c */
int bcache_init(u_int nblks, size_t bsize);
void bcache_flush(void);
int bcache_strategy(void *devdata, int unit, int rw, daddr_t blk,
size_t size, char *buf, size_t *rsize);
/*
* Disk block cache
*/
struct bcache_devdata
{
int (*dv_strategy)(void *devdata, int rw, daddr_t blk, size_t size, char *buf, size_t *rsize);
void *dv_devdata;
};
/*
* Modular console support.
*/
struct console
{
const char *c_name;
const char *c_desc;
int c_flags;
#define C_PRESENTIN (1<<0)
#define C_PRESENTOUT (1<<1)
#define C_ACTIVEIN (1<<2)
#define C_ACTIVEOUT (1<<3)
void (* c_probe)(struct console *cp); /* set c_flags to match hardware */
int (* c_init)(int arg); /* reinit XXX may need more args */
void (* c_out)(int c); /* emit c */
int (* c_in)(void); /* wait for and return input */
int (* c_ready)(void); /* return nonzer if input waiting */
};
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
{
char *id_ident; /* ASCII identifier, actual format varies with bus/handler */
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 pnpinfo_stql pnp_devices;
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(u_int8_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;
/*
* 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;
u_int16_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 */
struct file_metadata *f_metadata; /* metadata that will be placed in the module directory */
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 *filename, u_int64_t dest, struct preloaded_file **result);
/* Only a loader that will load a kernel (first module) should have an exec handler */
int (* l_exec)(struct preloaded_file *mp);
};
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[]);
struct preloaded_file *file_alloc(void);
struct preloaded_file *file_findfile(char *name, char *type);
struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type);
void file_discard(struct preloaded_file *fp);
void file_addmetadata(struct preloaded_file *fp, int type, size_t size, void *p);
int file_addmodule(struct preloaded_file *fp, char *modname, int version,
struct kernel_module **newmp);
/* MI module loaders */
#ifdef __elfN
/* Relocation types. */
#define ELF_RELOC_REL 1
#define ELF_RELOC_RELA 2
struct elf_file;
typedef Elf_Addr (symaddr_fn)(struct elf_file *ef, Elf_Word symidx);
int __elfN(loadfile)(char *filename, u_int64_t dest, struct preloaded_file **result);
int __elfN(obj_loadfile)(char *filename, u_int64_t dest,
struct preloaded_file **result);
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);
#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 *src, vm_offset_t dest,
const size_t len);
/* Copy to local address space from module address space, similar to bcopy() */
ssize_t (*arch_copyout)(const vm_offset_t src, void *dest,
const size_t len);
/* Read from file to module address space, same semantics as read() */
ssize_t (*arch_readin)(const int fd, vm_offset_t dest,
const size_t len);
/* Perform ISA byte port I/O (only for systems with ISA) */
int (*arch_isainb)(int port);
void (*arch_isaoutb)(int port, int value);
};
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);
time_t time(time_t *tloc);