/*- * Copyright (c) 1998 Michael Smith * 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. * * $Id: bootstrap.h,v 1.4 1998/09/04 02:43:26 msmith Exp $ */ #include /* XXX debugging */ extern struct console vidconsole; #define MARK(s, c) {vidconsole.c_out(s); vidconsole.c_out(c); while (!vidconsole.c_ready()) ; vidconsole.c_in();} /* * 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 }; /* 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 */ extern void interact(void); extern void source(char *filename); /* interp_parse.c */ extern int parse(int *argc, char ***argv, char *str); /* boot.c */ extern int autoboot(int delay, char *prompt); /* misc.c */ extern char *unargv(int argc, char *argv[]); extern size_t strlenout(vm_offset_t str); extern char *strdupout(vm_offset_t str); /* * Modular console support. */ struct console { char *c_name; 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[]; extern void cons_probe(void); /* * Plug-and-play enumerator/configurator interface. */ struct pnpident { char *id_ident; /* ASCII identifier, actual format varies with bus/handler */ struct pnpident *id_next; /* the next identifier */ }; struct pnphandler; struct pnpinfo { struct pnpident *pi_ident; /* list of identifiers */ 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 */ struct pnpinfo *pi_next; }; struct pnphandler { char *pp_name; /* handler/bus name */ void (* pp_enumerate)(struct pnpinfo **); /* add detected devices to chain */ }; extern struct pnphandler *pnphandlers[]; /* provided by MD code */ extern void pnp_addident(struct pnpinfo *pi, char *ident); /* * Module metadata header. * * Metadata are allocated on our heap, and copied into kernel space * before executing the kernel. */ struct module_metadata { size_t md_size; u_int16_t md_type; struct module_metadata *md_next; char md_data[0]; /* data are immediately appended */ }; /* * Loaded module information. * * At least one module (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 loaded_module { char *m_name; /* module name */ char *m_type; /* verbose module type, eg 'ELF kernel', 'pnptable', etc. */ char *m_args; /* arguments for the module */ struct module_metadata *m_metadata; /* metadata that will be placed in the module directory */ int m_loader; /* index of the loader that read the file */ vm_offset_t m_addr; /* load address */ size_t m_size; /* module size */ struct loaded_module *m_next; /* next module */ }; struct module_format { /* Load function must return EFTYPE if it can't handle the module supplied */ int (* l_load)(char *filename, vm_offset_t dest, struct loaded_module **result); /* Only a loader that will load a kernel (first module) should have an exec handler */ int (* l_exec)(struct loaded_module *mp); }; extern struct module_format *module_formats[]; /* supplied by consumer */ extern struct loaded_module *loaded_modules; extern int mod_load(char *name, int argc, char *argv[]); extern int mod_loadobj(char *type, char *name); extern struct loaded_module *mod_findmodule(char *name, char *type); extern void mod_addmetadata(struct loaded_module *mp, int type, size_t size, void *p); extern struct module_metadata *mod_findmetadata(struct loaded_module *mp, int type); extern void mod_discard(struct loaded_module *mp); extern struct loaded_module *mod_allocmodule(void); /* MI module loaders */ extern int aout_loadmodule(char *filename, vm_offset_t dest, struct loaded_module **result); extern vm_offset_t aout_findsym(char *name, struct loaded_module *mp); /* extern int elf_loadmodule(char *filename, vm_offset_t dest, struct loaded_module **result); */ /* * Module information subtypes * * XXX these are copies of the defines in , and should be nuked * XXX before being committed. */ #define MODINFO_NAME 0x0000 #define MODINFO_TYPE 0x0001 #define MODINFO_ADDR 0x0002 #define MODINFO_SIZE 0x0003 #define MODINFO_METADATA 0x8000 #define MODINFOMD_AOUTEXEC 0x0001 /* a.out exec header */ #define MODINFOMD_ELFHDR 0x0002 /* ELF header */ #define MODINFOMD_NOCOPY 0x8000 /* don't copy this metadata to the kernel */ #define KLD_IDENT_SYMNAME "kld_identifier_" #define MODINFOMD_KLDIDENT (MODINFOMD_NOCOPY | 0x4000) #define MODINFOMD_KLDDEP (MODINFOMD_NOCOPY | 0x4001) #if defined(__ELF__) /* * Alpha GAS needs an align before the section change. It seems to assume * that after the .previous, it is aligned, so the following .align 3 is * ignored. Since the previous instructions often contain strings, this is * a problem. */ #ifdef __alpha__ #define MAKE_SET(set, sym) \ __asm(".align 3"); \ __asm(".section .set." #set ",\"aw\""); \ __asm(".quad " #sym); \ __asm(".previous") #else #define MAKE_SET(set, sym) \ __asm(".section .set." #set ",\"aw\""); \ __asm(".long " #sym); \ __asm(".previous") #endif #define TEXT_SET(set, sym) MAKE_SET(set, sym) #define DATA_SET(set, sym) MAKE_SET(set, sym) #define BSS_SET(set, sym) MAKE_SET(set, sym) #define ABS_SET(set, sym) MAKE_SET(set, sym) #else /* * Linker set support, directly from * * NB: the constants defined below must match those defined in * ld/ld.h. Since their calculation requires arithmetic, we * can't name them symbolically (e.g., 23 is N_SETT | N_EXT). */ #define MAKE_SET(set, sym, type) \ static void const * const __set_##set##_sym_##sym = &sym; \ __asm(".stabs \"_" #set "\", " #type ", 0, 0, _" #sym) #define TEXT_SET(set, sym) MAKE_SET(set, sym, 23) #define DATA_SET(set, sym) MAKE_SET(set, sym, 25) #define BSS_SET(set, sym) MAKE_SET(set, sym, 27) #define ABS_SET(set, sym) MAKE_SET(set, sym, 21) #endif struct linker_set { int ls_length; const void *ls_items[1]; /* really ls_length of them, trailing NULL */ }; /* * 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); extern struct linker_set Xcommand_set; /* * 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)(); /* Locate the device for (name), return pointer to tail in (*path) */ int (*arch_getdev)(void **dev, char *name, char **path); /* Copy from local address space to module address space, similar to bcopy() */ int (*arch_copyin)(void *src, vm_offset_t dest, size_t len); /* Copy to local address space from module address space, similar to bcopy() */ int (*arch_copyout)(vm_offset_t src, void *dest, size_t len); /* Read from file to module address space, same semantics as read() */ int (*arch_readin)(int fd, vm_offset_t dest, 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? */ extern void delay(int delay); /* * XXX these belong in a system header */ #define KLD_NAMELEN 32 struct kld_module_dependancy { char kd_name[KLD_NAMELEN]; u_int32_t kd_version; }; struct kld_module_identifier { u_int32_t ki_kldversion; char ki_name[KLD_NAMELEN]; u_int32_t ki_version; struct kld_module_dependancy *ki_deps; int ki_ndeps; size_t ki_depsize; }; /* * Use the depsize field in the identifier to correctly index a * dependancy. */ #define KLD_GETDEP(ki, kd, n) (struct kld_module_dependancy *)((char *)(kd) + ((ki)->ki_depsize * (n)))