Signals have to be blocked when creating our LWPs or a LWP may receive a
[dragonfly.git] / sys / kern / init_main.c
CommitLineData
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1/*
2 * Copyright (c) 1995 Terrence R. Lambert
3 * All rights reserved.
4 *
5 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 * (c) UNIX System Laboratories, Inc.
8 * All or some portions of this file are derived from material licensed
9 * to the University of California by American Telephone and Telegraph
10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
11 * the permission of UNIX System Laboratories, Inc.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * @(#)init_main.c 8.9 (Berkeley) 1/21/94
42 * $FreeBSD: src/sys/kern/init_main.c,v 1.134.2.8 2003/06/06 20:21:32 tegge Exp $
287ebb09 43 * $DragonFly: src/sys/kern/init_main.c,v 1.81 2007/06/29 21:54:08 dillon Exp $
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44 */
45
46#include "opt_init_path.h"
47
48#include <sys/param.h>
49#include <sys/file.h>
50#include <sys/filedesc.h>
51#include <sys/kernel.h>
52#include <sys/mount.h>
53#include <sys/sysctl.h>
54#include <sys/proc.h>
55#include <sys/resourcevar.h>
56#include <sys/signalvar.h>
57#include <sys/systm.h>
58#include <sys/vnode.h>
59#include <sys/sysent.h>
60#include <sys/reboot.h>
61#include <sys/sysproto.h>
62#include <sys/vmmeter.h>
63#include <sys/unistd.h>
64#include <sys/malloc.h>
0b692e79 65#include <sys/machintr.h>
dadab5e9 66#include <sys/file2.h>
f8c3996b 67#include <sys/thread2.h>
e3161323 68#include <sys/sysref2.h>
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69
70#include <machine/cpu.h>
71
72#include <vm/vm.h>
73#include <vm/vm_param.h>
74#include <sys/lock.h>
75#include <vm/pmap.h>
76#include <vm/vm_map.h>
ba39e2e0 77#include <vm/vm_extern.h>
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78#include <sys/user.h>
79#include <sys/copyright.h>
80
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81/* Components of the first process -- never freed. */
82static struct session session0;
83static struct pgrp pgrp0;
b1b4e5a6 84static struct sigacts sigacts0;
0679adc4 85static struct filedesc filedesc0;
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86static struct plimit limit0;
87static struct vmspace vmspace0;
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88struct proc *initproc;
89struct proc proc0;
08f2f1bb 90struct lwp lwp0;
b7c628e4 91struct thread thread0;
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92
93int cmask = CMASK;
94extern struct user *proc0paddr;
95extern int fallback_elf_brand;
96
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97int boothowto = 0; /* initialized so that it can be patched */
98SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, "");
99
100/*
101 * This ensures that there is at least one entry so that the sysinit_set
ba39e2e0 102 * symbol is not undefined. A sybsystem ID of SI_SPECIAL_DUMMY is never
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103 * executed.
104 */
ba39e2e0 105SYSINIT(placeholder, SI_SPECIAL_DUMMY, SI_ORDER_ANY, NULL, NULL)
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106
107/*
108 * The sysinit table itself. Items are checked off as the are run.
109 * If we want to register new sysinit types, add them to newsysinit.
110 */
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111SET_DECLARE(sysinit_set, struct sysinit);
112struct sysinit **sysinit, **sysinit_end;
113struct sysinit **newsysinit, **newsysinit_end;
114
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115
116/*
117 * Merge a new sysinit set into the current set, reallocating it if
118 * necessary. This can only be called after malloc is running.
119 */
120void
dc62b251 121sysinit_add(struct sysinit **set, struct sysinit **set_end)
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122{
123 struct sysinit **newset;
124 struct sysinit **sipp;
125 struct sysinit **xipp;
dc62b251 126 int count;
984263bc 127
dc62b251 128 count = set_end - set;
984263bc 129 if (newsysinit)
dc62b251 130 count += newsysinit_end - newsysinit;
984263bc 131 else
dc62b251 132 count += sysinit_end - sysinit;
efda3bd0 133 newset = kmalloc(count * sizeof(*sipp), M_TEMP, M_WAITOK);
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134 if (newset == NULL)
135 panic("cannot malloc for sysinit");
136 xipp = newset;
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137 if (newsysinit) {
138 for (sipp = newsysinit; sipp < newsysinit_end; sipp++)
984263bc 139 *xipp++ = *sipp;
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140 } else {
141 for (sipp = sysinit; sipp < sysinit_end; sipp++)
984263bc 142 *xipp++ = *sipp;
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143 }
144 for (sipp = set; sipp < set_end; sipp++)
984263bc 145 *xipp++ = *sipp;
984263bc 146 if (newsysinit)
efda3bd0 147 kfree(newsysinit, M_TEMP);
984263bc 148 newsysinit = newset;
dc62b251 149 newsysinit_end = newset + count;
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150}
151
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152/*
153 * Callbacks from machine-dependant startup code (e.g. init386) to set
154 * up low level entities related to cpu #0's globaldata.
155 *
156 * Called from very low level boot code.
157 */
158void
159mi_proc0init(struct globaldata *gd, struct user *proc0paddr)
160{
161 lwkt_init_thread(&thread0, proc0paddr, LWKT_THREAD_STACK, 0, gd);
162 lwkt_set_comm(&thread0, "thread0");
6bf59cd2 163 LIST_INIT(&proc0.p_lwps);
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164 LIST_INSERT_HEAD(&proc0.p_lwps, &lwp0, lwp_list);
165 lwp0.lwp_thread = &thread0;
166 lwp0.lwp_proc = &proc0;
6bf59cd2 167 proc0.p_usched = usched_init();
08f2f1bb 168 lwp0.lwp_cpumask = 0xFFFFFFFF;
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169 varsymset_init(&proc0.p_varsymset, NULL);
170 thread0.td_flags |= TDF_RUNNING;
171 thread0.td_proc = &proc0;
08f2f1bb 172 thread0.td_lwp = &lwp0;
6bf59cd2 173 thread0.td_switch = cpu_heavy_switch; /* YYY eventually LWKT */
6b7dca13 174 lwkt_schedule_self(curthread);
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175}
176
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177/*
178 * System startup; initialize the world, create process 0, mount root
179 * filesystem, and fork to create init and pagedaemon. Most of the
180 * hard work is done in the lower-level initialization routines including
181 * startup(), which does memory initialization and autoconfiguration.
182 *
183 * This allows simple addition of new kernel subsystems that require
184 * boot time initialization. It also allows substitution of subsystem
185 * (for instance, a scheduler, kernel profiler, or VM system) by object
186 * module. Finally, it allows for optional "kernel threads".
187 */
188void
189mi_startup(void)
190{
8a8d5d85 191 struct sysinit *sip; /* system initialization*/
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192 struct sysinit **sipp; /* system initialization*/
193 struct sysinit **xipp; /* interior loop of sort*/
194 struct sysinit *save; /* bubble*/
984263bc 195
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196 if (sysinit == NULL) {
197 sysinit = SET_BEGIN(sysinit_set);
198 sysinit_end = SET_LIMIT(sysinit_set);
199 }
200
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201restart:
202 /*
203 * Perform a bubble sort of the system initialization objects by
204 * their subsystem (primary key) and order (secondary key).
205 */
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206 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
207 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
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208 if ((*sipp)->subsystem < (*xipp)->subsystem ||
209 ((*sipp)->subsystem == (*xipp)->subsystem &&
210 (*sipp)->order <= (*xipp)->order))
211 continue; /* skip*/
212 save = *sipp;
213 *sipp = *xipp;
214 *xipp = save;
215 }
216 }
217
218 /*
219 * Traverse the (now) ordered list of system initialization tasks.
220 * Perform each task, and continue on to the next task.
221 *
222 * The last item on the list is expected to be the scheduler,
223 * which will not return.
224 */
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225 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
226 sip = *sipp;
ba39e2e0 227 if (sip->subsystem == SI_SPECIAL_DUMMY)
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228 continue; /* skip dummy task(s)*/
229
ba39e2e0 230 if (sip->subsystem == SI_SPECIAL_DONE)
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231 continue;
232
233 /* Call function */
8a8d5d85 234 (*(sip->func))(sip->udata);
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235
236 /* Check off the one we're just done */
ba39e2e0 237 sip->subsystem = SI_SPECIAL_DONE;
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238
239 /* Check if we've installed more sysinit items via KLD */
240 if (newsysinit != NULL) {
dc62b251 241 if (sysinit != SET_BEGIN(sysinit_set))
efda3bd0 242 kfree(sysinit, M_TEMP);
984263bc 243 sysinit = newsysinit;
dc62b251 244 sysinit_end = newsysinit_end;
984263bc 245 newsysinit = NULL;
dc62b251 246 newsysinit_end = NULL;
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247 goto restart;
248 }
249 }
250
251 panic("Shouldn't get here!");
252 /* NOTREACHED*/
253}
254
255
256/*
257 ***************************************************************************
258 ****
259 **** The following SYSINIT's belong elsewhere, but have not yet
260 **** been moved.
261 ****
262 ***************************************************************************
263 */
264static void
265print_caddr_t(void *data __unused)
266{
6ea70f76 267 kprintf("%s", (char *)data);
984263bc 268}
ba39e2e0 269SYSINIT(announce, SI_BOOT1_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright)
984263bc 270
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271/*
272 * Leave the critical section that protected us from spurious interrupts
273 * so device probes work.
274 */
275static void
276leavecrit(void *dummy __unused)
277{
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278 MachIntrABI.finalize();
279 cpu_enable_intr();
280 MachIntrABI.cleanup();
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281 crit_exit();
282 KKASSERT(!IN_CRITICAL_SECT(curthread));
dbcd0c9b 283
f8c3996b 284 if (bootverbose)
6ea70f76 285 kprintf("Leaving critical section, allowing interrupts\n");
f8c3996b 286}
ba39e2e0 287SYSINIT(leavecrit, SI_BOOT2_LEAVE_CRIT, SI_ORDER_ANY, leavecrit, NULL)
984263bc 288
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289/*
290 * This is called after the threading system is up and running,
291 * including the softclock, clock interrupts, and SMP.
292 */
293static void
294tsleepworks(void *dummy __unused)
295{
296 tsleep_now_works = 1;
297}
298SYSINIT(tsleepworks, SI_BOOT2_FINISH_SMP, SI_ORDER_SECOND, tsleepworks, NULL)
299
300/*
301 * This is called after devices have configured. Tell the kernel we are
302 * no longer in cold boot.
303 */
304static void
305endofcoldboot(void *dummy __unused)
306{
307 cold = 0;
308}
309SYSINIT(endofcoldboot, SI_SUB_ISWARM, SI_ORDER_ANY, endofcoldboot, NULL)
310
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311/*
312 ***************************************************************************
313 ****
314 **** The two following SYSINT's are proc0 specific glue code. I am not
315 **** convinced that they can not be safely combined, but their order of
316 **** operation has been maintained as the same as the original init_main.c
317 **** for right now.
318 ****
319 **** These probably belong in init_proc.c or kern_proc.c, since they
320 **** deal with proc0 (the fork template process).
321 ****
322 ***************************************************************************
323 */
324/* ARGSUSED*/
325static void
326proc0_init(void *dummy __unused)
327{
0679adc4 328 struct proc *p;
81eea9f4 329 struct lwp *lp;
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330
331 p = &proc0;
08f2f1bb 332 lp = &lwp0;
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333
334 /*
335 * Initialize process and pgrp structures.
336 */
337 procinit();
338
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339 /*
340 * additional VM structures
341 */
342 vm_init2();
343
344 /*
345 * Create process 0 (the swapper).
346 */
347 LIST_INSERT_HEAD(&allproc, p, p_list);
348 p->p_pgrp = &pgrp0;
349 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
350 LIST_INIT(&pgrp0.pg_members);
351 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);
352
353 pgrp0.pg_session = &session0;
354 session0.s_count = 1;
355 session0.s_leader = p;
356
357 p->p_sysent = &aout_sysvec;
358
344ad853 359 p->p_flag = P_SYSTEM;
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360 p->p_stat = SACTIVE;
361 lp->lwp_stat = LSRUN;
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362 p->p_nice = NZERO;
363 p->p_rtprio.type = RTP_PRIO_NORMAL;
364 p->p_rtprio.prio = 0;
08f2f1bb 365 lp->lwp_rtprio = p->p_rtprio;
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366
367 p->p_peers = 0;
368 p->p_leader = p;
369
370 bcopy("swapper", p->p_comm, sizeof ("swapper"));
81eea9f4 371 bcopy("swapper", thread0.td_comm, sizeof ("swapper"));
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372
373 /* Create credentials. */
984263bc 374 p->p_ucred = crget();
41c20dac 375 p->p_ucred->cr_ruidinfo = uifind(0);
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376 p->p_ucred->cr_ngroups = 1; /* group 0 */
377 p->p_ucred->cr_uidinfo = uifind(0);
378
379 /* Don't jail it */
41c20dac 380 p->p_ucred->cr_prison = NULL;
984263bc 381
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382 /* Create sigacts. */
383 p->p_sigacts = &sigacts0;
384 p->p_sigacts->ps_refcnt = 1;
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385
386 /* Initialize signal state for process 0. */
c0b8a06d 387 siginit(p);
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388
389 /* Create the file descriptor table. */
228b401d 390 fdinit_bootstrap(p, &filedesc0, cmask);
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391
392 /* Create the limits structures. */
c0b8a06d 393 plimit_init0(&limit0);
984263bc 394 p->p_limit = &limit0;
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395
396 /* Allocate a prototype map so we have something to fork. */
397 pmap_pinit0(vmspace_pmap(&vmspace0));
398 p->p_vmspace = &vmspace0;
287ebb09 399 lp->lwp_vmspace = p->p_vmspace;
e3161323 400 sysref_init(&vmspace0.vm_sysref, &vmspace_sysref_class);
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401 vm_map_init(&vmspace0.vm_map,
402 round_page(VM_MIN_USER_ADDRESS),
403 trunc_page(VM_MAX_USER_ADDRESS),
404 vmspace_pmap(&vmspace0));
e3161323 405 sysref_activate(&vmspace0.vm_sysref);
984263bc 406
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407 /*
408 * Charge root for one process.
409 */
41c20dac 410 (void)chgproccnt(p->p_ucred->cr_uidinfo, 1, 0);
ba39e2e0 411 vm_init_limits(p);
984263bc 412}
ba39e2e0 413SYSINIT(p0init, SI_BOOT2_PROC0, SI_ORDER_FIRST, proc0_init, NULL)
984263bc 414
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415static int proc0_post_callback(struct proc *p, void *data __unused);
416
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417/* ARGSUSED*/
418static void
419proc0_post(void *dummy __unused)
420{
421 struct timespec ts;
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422
423 /*
424 * Now we can look at the time, having had a chance to verify the
425 * time from the file system. Pretend that proc0 started now.
426 */
8fa76237 427 allproc_scan(proc0_post_callback, NULL);
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428
429 /*
430 * Give the ``random'' number generator a thump.
431 * XXX: Does read_random() contain enough bits to be used here ?
432 */
433 nanotime(&ts);
cddfb7bb 434 skrandom(ts.tv_sec ^ ts.tv_nsec);
984263bc 435}
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436
437static int
438proc0_post_callback(struct proc *p, void *data __unused)
439{
440 microtime(&p->p_start);
441 return(0);
442}
443
ba39e2e0 444SYSINIT(p0post, SI_SUB_PROC0_POST, SI_ORDER_FIRST, proc0_post, NULL)
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445
446/*
447 ***************************************************************************
448 ****
449 **** The following SYSINIT's and glue code should be moved to the
450 **** respective files on a per subsystem basis.
451 ****
452 ***************************************************************************
453 */
454
455
456/*
457 ***************************************************************************
458 ****
459 **** The following code probably belongs in another file, like
460 **** kern/init_init.c.
461 ****
462 ***************************************************************************
463 */
464
465/*
466 * List of paths to try when searching for "init".
467 */
468static char init_path[MAXPATHLEN] =
469#ifdef INIT_PATH
470 __XSTRING(INIT_PATH);
471#else
472 "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall";
473#endif
474SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, "");
475
476/*
477 * Start the initial user process; try exec'ing each pathname in init_path.
478 * The program is invoked with one argument containing the boot flags.
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479 *
480 * The MP lock is held on entry.
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481 */
482static void
91bd9c1e 483start_init(void *dummy, struct trapframe *frame)
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484{
485 vm_offset_t addr;
486 struct execve_args args;
487 int options, error;
488 char *var, *path, *next, *s;
489 char *ucp, **uap, *arg0, *arg1;
490 struct proc *p;
553ea3c8 491 struct lwp *lp;
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492 struct mount *mp;
493 struct vnode *vp;
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494
495 p = curproc;
496
08f2f1bb 497 lp = ONLY_LWP_IN_PROC(p);
553ea3c8 498
984263bc 499 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */
861905fb 500 mp = mountlist_boot_getfirst();
21739618 501 if (VFS_ROOT(mp, &vp))
984263bc 502 panic("cannot find root vnode");
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503 if (mp->mnt_ncmountpt.ncp == NULL) {
504 cache_allocroot(&mp->mnt_ncmountpt, mp, vp);
505 cache_unlock(&mp->mnt_ncmountpt); /* leave ref intact */
8c361dda 506 }
21739618 507 p->p_fd->fd_cdir = vp;
597aea93 508 vref(p->p_fd->fd_cdir);
21739618 509 p->p_fd->fd_rdir = vp;
597aea93 510 vref(p->p_fd->fd_rdir);
28623bf9 511 vfs_cache_setroot(vp, cache_hold(&mp->mnt_ncmountpt));
a11aaa81 512 vn_unlock(vp); /* leave ref intact */
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513 cache_copy(&mp->mnt_ncmountpt, &p->p_fd->fd_ncdir);
514 cache_copy(&mp->mnt_ncmountpt, &p->p_fd->fd_nrdir);
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515
516 /*
517 * Need just enough stack to hold the faked-up "execve()" arguments.
518 */
519 addr = trunc_page(USRSTACK - PAGE_SIZE);
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520 error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE,
521 FALSE,
522 VM_MAPTYPE_NORMAL,
523 VM_PROT_ALL, VM_PROT_ALL,
524 0);
525 if (error)
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526 panic("init: couldn't allocate argument space");
527 p->p_vmspace->vm_maxsaddr = (caddr_t)addr;
528 p->p_vmspace->vm_ssize = 1;
529
bc01a404 530 if ((var = kgetenv("init_path")) != NULL) {
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531 strncpy(init_path, var, sizeof init_path);
532 init_path[sizeof init_path - 1] = 0;
533 }
bc01a404 534 if ((var = kgetenv("kern.fallback_elf_brand")) != NULL)
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535 fallback_elf_brand = strtol(var, NULL, 0);
536
537 for (path = init_path; *path != '\0'; path = next) {
538 while (*path == ':')
539 path++;
540 if (*path == '\0')
541 break;
542 for (next = path; *next != '\0' && *next != ':'; next++)
543 /* nothing */ ;
544 if (bootverbose)
6ea70f76 545 kprintf("start_init: trying %.*s\n", (int)(next - path),
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546 path);
547
548 /*
549 * Move out the boot flag argument.
550 */
551 options = 0;
552 ucp = (char *)USRSTACK;
553 (void)subyte(--ucp, 0); /* trailing zero */
554 if (boothowto & RB_SINGLE) {
555 (void)subyte(--ucp, 's');
556 options = 1;
557 }
558#ifdef notyet
559 if (boothowto & RB_FASTBOOT) {
560 (void)subyte(--ucp, 'f');
561 options = 1;
562 }
563#endif
564
565#ifdef BOOTCDROM
566 (void)subyte(--ucp, 'C');
567 options = 1;
568#endif
569 if (options == 0)
570 (void)subyte(--ucp, '-');
571 (void)subyte(--ucp, '-'); /* leading hyphen */
572 arg1 = ucp;
573
574 /*
575 * Move out the file name (also arg 0).
576 */
577 (void)subyte(--ucp, 0);
578 for (s = next - 1; s >= path; s--)
579 (void)subyte(--ucp, *s);
580 arg0 = ucp;
581
582 /*
583 * Move out the arg pointers.
584 */
585 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1));
586 (void)suword((caddr_t)--uap, (long)0); /* terminator */
587 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1);
588 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0);
589
590 /*
591 * Point at the arguments.
592 */
593 args.fname = arg0;
594 args.argv = uap;
595 args.envv = NULL;
596
597 /*
598 * Now try to exec the program. If can't for any reason
599 * other than it doesn't exist, complain.
600 *
601 * Otherwise, return via fork_trampoline() all the way
602 * to user mode as init!
a2a5ad0d
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603 *
604 * WARNING! We may have been moved to another cpu after
0a3f9b47
MD
605 * acquiring the current user process designation. The
606 * MP lock will migrate with us though so we still have to
607 * release it.
984263bc 608 */
753fd850 609 if ((error = sys_execve(&args)) == 0) {
8a8d5d85 610 rel_mplock();
52eedfb5 611 lp->lwp_proc->p_usched->acquire_curproc(lp);
984263bc 612 return;
8a8d5d85 613 }
984263bc 614 if (error != ENOENT)
6ea70f76 615 kprintf("exec %.*s: error %d\n", (int)(next - path),
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616 path, error);
617 }
6ea70f76 618 kprintf("init: not found in path %s\n", init_path);
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619 panic("no init");
620}
621
622/*
623 * Like kthread_create(), but runs in it's own address space.
624 * We do this early to reserve pid 1.
625 *
626 * Note special case - do not make it runnable yet. Other work
627 * in progress will change this more.
628 */
629static void
630create_init(const void *udata __unused)
631{
632 int error;
bb3cd951 633 struct lwp *lp;
984263bc 634
e43a034f 635 crit_enter();
08f2f1bb 636 error = fork1(&lwp0, RFFDG | RFPROC, &initproc);
984263bc 637 if (error)
fc92d4aa 638 panic("cannot fork init: %d", error);
344ad853 639 initproc->p_flag |= P_SYSTEM;
08f2f1bb 640 lp = ONLY_LWP_IN_PROC(initproc);
bb3cd951 641 cpu_set_fork_handler(lp, start_init, NULL);
e43a034f 642 crit_exit();
984263bc 643}
ba39e2e0 644SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL)
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645
646/*
647 * Make it runnable now.
648 */
649static void
650kick_init(const void *udata __unused)
651{
08f2f1bb 652 start_forked_proc(&lwp0, initproc);
984263bc 653}
ba39e2e0 654SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL)
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655
656/*
657 * Machine independant globaldata initialization
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658 *
659 * WARNING! Called from early boot, 'mycpu' may not work yet.
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660 */
661void
d0e06f83 662mi_gdinit(struct globaldata *gd, int cpuid)
8ad65e08 663{
85100692 664 TAILQ_INIT(&gd->gd_tdfreeq); /* for pmap_{new,dispose}_thread() */
88c4d2f6 665 TAILQ_INIT(&gd->gd_systimerq);
e3161323 666 gd->gd_sysid_alloc = cpuid; /* prime low bits for cpu lookup */
d0e06f83 667 gd->gd_cpuid = cpuid;
fda1ad89 668 gd->gd_cpumask = (cpumask_t)1 << cpuid;
8ad65e08 669 lwkt_gdinit(gd);
41a01a4d 670 vm_map_entry_reserve_cpu_init(gd);
fc17ad60 671 sleep_gdinit(gd);
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672}
673