1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 *
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27 */ 28 29#include <sys/types.h> 30#include <sys/queue.h> 31 32/* XXX debugging */ 33extern struct console vidconsole; 34#define MARK(s, c) {vidconsole.c_out(s); vidconsole.c_out(c); while (!vidconsole.c_ready()) ; vidconsole.c_in();} 35 36/* 37 * Generic device specifier; architecture-dependant 38 * versions may be larger, but should be allowed to 39 * overlap. 40 */ 41struct devdesc 42{ 43 struct devsw *d_dev; 44 int d_type; 45#define DEVT_NONE 0 46#define DEVT_DISK 1 47#define DEVT_NET 2 48}; 49 50/* Commands and return values; nonzero return sets command_errmsg != NULL */ 51typedef int (bootblk_cmd_t)(int argc, char *argv[]); 52extern char *command_errmsg; 53extern char command_errbuf[]; /* XXX blah, length */ 54#define CMD_OK 0 55#define CMD_ERROR 1 56 57/* interp.c */ 58extern void interact(void); 59extern int include(char *filename); 60 61/* interp_parse.c */ 62extern int parse(int *argc, char ***argv, char *str); 63 64/* interp_forth.c */ 65extern void bf_init(void); 66extern int bf_run(char *line); 67 68/* boot.c */ 69extern int autoboot(int delay, char *prompt); 70extern void autoboot_maybe(void); 71extern int getrootmount(char *rootdev); 72 73/* misc.c */ 74extern char *unargv(int argc, char *argv[]); 75extern void hexdump(caddr_t region, size_t len); 76extern size_t strlenout(vm_offset_t str); 77extern char *strdupout(vm_offset_t str); 78 79/* bcache.c */ 80extern int bcache_init(int nblks, size_t bsize); 81extern void bcache_flush(); 82 83/* 84 * Disk block cache 85 */ 86struct bcache_devdata 87{ 88 int (*dv_strategy)(void *devdata, int rw, daddr_t blk, size_t size, void *buf, size_t *rsize); 89 void *dv_devdata; 90}; 91 92/* 93 * Modular console support. 94 */ 95struct console 96{ 97 char *c_name; 98 char *c_desc; 99 int c_flags; 100#define C_PRESENTIN (1<<0) 101#define C_PRESENTOUT (1<<1) 102#define C_ACTIVEIN (1<<2) 103#define C_ACTIVEOUT (1<<3) 104 void (* c_probe)(struct console *cp); /* set c_flags to match hardware */ 105 int (* c_init)(int arg); /* reinit XXX may need more args */ 106 void (* c_out)(int c); /* emit c */ 107 int (* c_in)(void); /* wait for and return input */ 108 int (* c_ready)(void); /* return nonzer if input waiting */ 109}; 110extern struct console *consoles[]; 111extern void cons_probe(void); 112 113/* 114 * Plug-and-play enumerator/configurator interface. 115 */ 116struct pnphandler 117{ 118 char *pp_name; /* handler/bus name */ 119 void (* pp_enumerate)(void); /* enumerate PnP devices, add to chain */ 120}; 121 122struct pnpident 123{ 124 char *id_ident; /* ASCII identifier, actual format varies with bus/handler */ 125 STAILQ_ENTRY(pnpident) id_link; 126}; 127 128struct pnpinfo 129{ 130 char *pi_desc; /* ASCII description, optional */ 131 int pi_revision; /* optional revision (or -1) if not supported */ 132 char *pi_module; /* module/args nominated to handle device */ 133 int pi_argc; /* module arguments */ 134 char **pi_argv; 135 struct pnphandler *pi_handler; /* handler which detected this device */ 136 STAILQ_HEAD(,pnpident) pi_ident; /* list of identifiers */ 137 STAILQ_ENTRY(pnpinfo) pi_link; 138}; 139 140extern struct pnphandler *pnphandlers[]; /* provided by MD code */ 141 142extern void pnp_addident(struct pnpinfo *pi, char *ident); 143extern struct pnpinfo *pnp_allocinfo(void); 144extern void pnp_freeinfo(struct pnpinfo *pi); 145extern void pnp_addinfo(struct pnpinfo *pi); 146extern char *pnp_eisaformat(u_int8_t *data); 147 148/* 149 * < 0 - No ISA in system 150 * == 0 - Maybe ISA, search for read data port 151 * > 0 - ISA in system, value is read data port address 152 */ 153extern int isapnp_readport; 154 155/* 156 * Preloaded file metadata header. 157 * 158 * Metadata are allocated on our heap, and copied into kernel space 159 * before executing the kernel. 160 */ 161struct file_metadata 162{ 163 size_t md_size; 164 u_int16_t md_type; 165 struct file_metadata *md_next; 166 char md_data[0]; /* data are immediately appended */ 167}; 168 169struct preloaded_file; 170 171struct kernel_module 172{ 173 char *m_name; /* module name */ 174/* char *m_args;*/ /* arguments for the module */ 175 struct preloaded_file *m_fp; 176 struct kernel_module *m_next; 177}; 178 179/* 180 * Preloaded file information. Depending on type, file can contain 181 * additional units called 'modules'. 182 * 183 * At least one file (the kernel) must be loaded in order to boot. 184 * The kernel is always loaded first. 185 * 186 * String fields (m_name, m_type) should be dynamically allocated. 187 */ 188struct preloaded_file 189{ 190 char *f_name; /* file name */ 191 char *f_type; /* verbose file type, eg 'ELF kernel', 'pnptable', etc. */ 192 char *f_args; /* arguments for the file */ 193 struct file_metadata *f_metadata; /* metadata that will be placed in the module directory */ 194 int f_loader; /* index of the loader that read the file */ 195 vm_offset_t f_addr; /* load address */ 196 size_t f_size; /* file size */ 197 struct kernel_module *f_modules; /* list of modules if any */ 198 struct preloaded_file *f_next; /* next file */ 199}; 200 201struct file_format 202{ 203 /* Load function must return EFTYPE if it can't handle the module supplied */ 204 int (* l_load)(char *filename, vm_offset_t dest, struct preloaded_file **result); 205 /* Only a loader that will load a kernel (first module) should have an exec handler */ 206 int (* l_exec)(struct preloaded_file *mp); 207}; 208 209extern struct file_format *file_formats[]; /* supplied by consumer */ 210extern struct preloaded_file *preloaded_files; 211 212extern int mod_load(char *name, int argc, char *argv[]); 213extern int mod_loadobj(char *type, char *name); 214 215struct preloaded_file *file_alloc(void); 216struct preloaded_file *file_findfile(char *name, char *type); 217struct file_metadata *file_findmetadata(struct preloaded_file *fp, int type); 218void file_discard(struct preloaded_file *fp); 219void file_addmetadata(struct preloaded_file *fp, int type, size_t size, void *p); 220int file_addmodule(struct preloaded_file *fp, char *modname, 221 struct kernel_module **newmp); 222 223 224/* MI module loaders */ 225extern int aout_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result); 226extern vm_offset_t aout_findsym(char *name, struct preloaded_file *fp); 227 228extern int elf_loadfile(char *filename, vm_offset_t dest, struct preloaded_file **result); 229 230#ifndef NEW_LINKER_SET 231#include <sys/linker_set.h> 232 233/* XXX just for conversion's sake, until we move to the new linker set code */ 234 235#define SET_FOREACH(pvar, set) \ 236 for ((char*) pvar = set.ls_items; \ 237 (char*) pvar < (char*) &set.ls_items[set.ls_length]; \ 238 pvar++) 239 240#else /* NEW_LINKER_SET */ 241 242/* 243 * Private macros, not to be used outside this header file. 244 */ 245#define __MAKE_SET(set, sym) \ 246 static void *__CONCAT(__setentry,__LINE__) \ 247 __attribute__((__section__("set_" #set),__unused__)) = &sym 248#define __SET_BEGIN(set) \ 249 ({ extern void *__CONCAT(__start_set_,set); \ 250 &__CONCAT(__start_set_,set); }) 251#define __SET_END(set) \ 252 ({ extern void *__CONCAT(__stop_set_,set); \ 253 &__CONCAT(__stop_set_,set); }) 254 255/* 256 * Public macros. 257 */ 258 259/* Add an entry to a set. */ 260#define DATA_SET(set, sym) __MAKE_SET(set, sym) 261 262/* 263 * Iterate over all the elements of a set. 264 * 265 * Sets always contain addresses of things, and "pvar" points to words 266 * containing those addresses. Thus is must be declared as "type **pvar", 267 * and the address of each set item is obtained inside the loop by "*pvar". 268 */ 269#define SET_FOREACH(pvar, set) \ 270 for (pvar = (__typeof__(pvar))__SET_BEGIN(set); \ 271 pvar < (__typeof__(pvar))__SET_END(set); pvar++) 272#endif 273 274/* 275 * Support for commands 276 */ 277struct bootblk_command 278{ 279 const char *c_name; 280 const char *c_desc; 281 bootblk_cmd_t *c_fn; 282}; 283 284#define COMMAND_SET(tag, key, desc, func) \ 285 static bootblk_cmd_t func; \ 286 static struct bootblk_command _cmd_ ## tag = { key, desc, func }; \ 287 DATA_SET(Xcommand_set, _cmd_ ## tag); 288 289extern struct linker_set Xcommand_set; 290 291/* 292 * The intention of the architecture switch is to provide a convenient 293 * encapsulation of the interface between the bootstrap MI and MD code. 294 * MD code may selectively populate the switch at runtime based on the 295 * actual configuration of the target system. 296 */ 297struct arch_switch 298{ 299 /* Automatically load modules as required by detected hardware */ 300 int (* arch_autoload)(); 301 /* Locate the device for (name), return pointer to tail in (*path) */ 302 int (*arch_getdev)(void **dev, const char *name, const char **path); 303 /* Copy from local address space to module address space, similar to bcopy() */ 304 int (*arch_copyin)(void *src, vm_offset_t dest, size_t len); 305 /* Copy to local address space from module address space, similar to bcopy() */ 306 int (*arch_copyout)(vm_offset_t src, void *dest, size_t len); 307 /* Read from file to module address space, same semantics as read() */ 308 int (*arch_readin)(int fd, vm_offset_t dest, size_t len); 309 /* Perform ISA byte port I/O (only for systems with ISA) */ 310 int (*arch_isainb)(int port); 311 void (*arch_isaoutb)(int port, int value); 312}; 313extern struct arch_switch archsw; 314 315/* This must be provided by the MD code, but should it be in the archsw? */ 316extern void delay(int delay);
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