Commit | Line | Data |
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da7c5cc6 | 1 | /* |
475798b6 KM |
2 | * Copyright (c) 1982, 1986, 1989 Regents of the University of California. |
3 | * All rights reserved. | |
da7c5cc6 | 4 | * |
475798b6 KM |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | * | |
3ca85ace | 17 | * @(#)init_main.c 7.11 (Berkeley) %G% |
da7c5cc6 | 18 | */ |
961945a8 | 19 | |
94368568 JB |
20 | #include "param.h" |
21 | #include "systm.h" | |
94368568 JB |
22 | #include "user.h" |
23 | #include "kernel.h" | |
94368568 JB |
24 | #include "mount.h" |
25 | #include "map.h" | |
26 | #include "proc.h" | |
475798b6 | 27 | #include "vnode.h" |
94368568 JB |
28 | #include "seg.h" |
29 | #include "conf.h" | |
30 | #include "buf.h" | |
31 | #include "vm.h" | |
32 | #include "cmap.h" | |
33 | #include "text.h" | |
34 | #include "clist.h" | |
8fe87cbb | 35 | #include "malloc.h" |
94368568 | 36 | #include "protosw.h" |
f378da4c | 37 | #include "reboot.h" |
d301d150 KM |
38 | |
39 | #include "machine/pte.h" | |
40 | #include "machine/reg.h" | |
41 | #include "machine/cpu.h" | |
961945a8 | 42 | |
28c7a4c5 | 43 | int cmask = CMASK; |
475798b6 | 44 | extern int (*mountroot)(); |
c4708522 BJ |
45 | /* |
46 | * Initialization code. | |
47 | * Called from cold start routine as | |
48 | * soon as a stack and segmentation | |
49 | * have been established. | |
50 | * Functions: | |
51 | * clear and free user core | |
52 | * turn on clock | |
53 | * hand craft 0th process | |
54 | * call all initialization routines | |
55 | * fork - process 0 to schedule | |
c4708522 | 56 | * - process 1 execute bootstrap |
a5829200 | 57 | * - process 2 to page out |
c4708522 BJ |
58 | */ |
59 | main(firstaddr) | |
b7892118 | 60 | int firstaddr; |
c4708522 | 61 | { |
73248996 | 62 | register int i; |
dd4b582c | 63 | register struct proc *p; |
8fe87cbb | 64 | register struct pgrp *pg; |
4f083fd7 | 65 | int s; |
c4708522 | 66 | |
c4708522 | 67 | rqinit(); |
fbf9a431 | 68 | #include "loop.h" |
c4708522 | 69 | startup(firstaddr); |
c4708522 BJ |
70 | |
71 | /* | |
72 | * set up system process 0 (swapper) | |
73 | */ | |
dd4b582c | 74 | p = &proc[0]; |
206ecc72 | 75 | p->p_p0br = u.u_pcb.pcb_p0br; |
dd4b582c BJ |
76 | p->p_szpt = 1; |
77 | p->p_addr = uaddr(p); | |
78 | p->p_stat = SRUN; | |
79 | p->p_flag |= SLOAD|SSYS; | |
80 | p->p_nice = NZERO; | |
81 | setredzone(p->p_addr, (caddr_t)&u); | |
82 | u.u_procp = p; | |
8fe87cbb MT |
83 | MALLOC(pgrphash[0], struct pgrp *, sizeof (struct pgrp), |
84 | M_PGRP, M_NOWAIT); | |
85 | if ((pg = pgrphash[0]) == NULL) | |
86 | panic("no space to craft zero'th process group"); | |
87 | pg->pg_id = 0; | |
88 | pg->pg_hforw = 0; | |
89 | pg->pg_mem = p; | |
90 | pg->pg_jobc = 0; | |
91 | p->p_pgrp = pg; | |
92 | p->p_pgrpnxt = 0; | |
93 | MALLOC(pg->pg_session, struct session *, sizeof (struct session), | |
94 | M_SESSION, M_NOWAIT); | |
95 | if (pg->pg_session == NULL) | |
96 | panic("no space to craft zero'th session"); | |
97 | pg->pg_session->s_count = 1; | |
98 | pg->pg_session->s_leader = 0; | |
27ef8b9b MT |
99 | #ifdef KTRACE |
100 | p->p_tracep = NULL; | |
101 | p->p_traceflag = 0; | |
102 | #endif | |
14fda239 | 103 | /* |
4898b838 KM |
104 | * These assume that the u. area is always mapped |
105 | * to the same virtual address. Otherwise must be | |
14fda239 KM |
106 | * handled when copying the u. area in newproc(). |
107 | */ | |
475798b6 | 108 | u.u_nd.ni_iov = &u.u_nd.ni_nd.nd_iovec; |
4898b838 | 109 | u.u_ap = u.u_arg; |
14fda239 | 110 | u.u_nd.ni_iovcnt = 1; |
fb1db32c | 111 | |
28c7a4c5 | 112 | u.u_cmask = cmask; |
a5829200 | 113 | u.u_lastfile = -1; |
d3003a84 BJ |
114 | for (i = 0; i < sizeof(u.u_rlimit)/sizeof(u.u_rlimit[0]); i++) |
115 | u.u_rlimit[i].rlim_cur = u.u_rlimit[i].rlim_max = | |
116 | RLIM_INFINITY; | |
4898b838 | 117 | /* |
8ede3c1b MK |
118 | * configure virtual memory system, |
119 | * set vm rlimits | |
4898b838 KM |
120 | */ |
121 | vminit(); | |
8ede3c1b | 122 | |
475798b6 KM |
123 | /* |
124 | * Get vnodes for swapdev, argdev, and rootdev. | |
125 | */ | |
126 | ihinit(); | |
127 | nchinit(); | |
128 | if (bdevvp(swapdev, &swapdev_vp) || | |
129 | bdevvp(argdev, &argdev_vp) || | |
130 | bdevvp(rootdev, &rootvp)) | |
131 | panic("can't setup bdevvp's"); | |
132 | ||
133 | /* | |
134 | * Setup credentials | |
135 | */ | |
136 | u.u_cred = crget(); | |
137 | u.u_ngroups = 1; | |
138 | ||
1d348849 | 139 | #if defined(QUOTA) |
859bd1be RE |
140 | qtinit(); |
141 | p->p_quota = u.u_quota = getquota(0, 0, Q_NDQ); | |
142 | #endif | |
c70d0a8b | 143 | startrtclock(); |
5cb75b5d | 144 | #if defined(vax) |
f882447b SL |
145 | #include "kg.h" |
146 | #if NKG > 0 | |
d0ab60b1 | 147 | startkgclock(); |
fb1db32c | 148 | #endif |
d0ab60b1 | 149 | #endif |
c4708522 BJ |
150 | |
151 | /* | |
d872f034 | 152 | * Initialize tables, protocols, and set up well-known inodes. |
c4708522 | 153 | */ |
d872f034 | 154 | mbinit(); |
a5829200 | 155 | cinit(); |
730ff8ce MK |
156 | #include "sl.h" |
157 | #if NSL > 0 | |
158 | slattach(); /* XXX */ | |
159 | #endif | |
4f4caf05 BJ |
160 | #if NLOOP > 0 |
161 | loattach(); /* XXX */ | |
162 | #endif | |
4f083fd7 SL |
163 | /* |
164 | * Block reception of incoming packets | |
165 | * until protocols have been initialized. | |
166 | */ | |
167 | s = splimp(); | |
fbf9a431 | 168 | ifinit(); |
b7892118 | 169 | domaininit(); |
4f083fd7 | 170 | splx(s); |
1d348849 | 171 | pqinit(); |
fd690153 | 172 | xinit(); |
fa1a0164 | 173 | swapinit(); |
e6254ffb BJ |
174 | #ifdef GPROF |
175 | kmstartup(); | |
176 | #endif | |
475798b6 KM |
177 | #ifdef NFS |
178 | nfsinit(); | |
179 | #endif | |
9d6d37ce | 180 | |
27b91f59 BJ |
181 | /* kick off timeout driven events by calling first time */ |
182 | roundrobin(); | |
183 | schedcpu(); | |
184 | schedpaging(); | |
185 | ||
186 | /* set up the root file system */ | |
475798b6 KM |
187 | if ((*mountroot)()) |
188 | panic("cannot mount root"); | |
189 | /* | |
190 | * Get vnode for '/'. | |
191 | * Setup rootdir and u.u_cdir to point to it. | |
192 | */ | |
193 | if (VFS_ROOT(rootfs, &rootdir)) | |
194 | panic("cannot find root vnode"); | |
195 | u.u_cdir = rootdir; | |
196 | u.u_cdir->v_count++; | |
3ca85ace | 197 | VOP_UNLOCK(rootdir); |
c4708522 | 198 | u.u_rdir = NULL; |
475798b6 | 199 | boottime = time; |
27b91f59 | 200 | |
c4708522 BJ |
201 | u.u_dmap = zdmap; |
202 | u.u_smap = zdmap; | |
203 | ||
5cb75b5d | 204 | enablertclock(); /* enable realtime clock interrupts */ |
28c7a4c5 MK |
205 | /* |
206 | * make init process | |
207 | */ | |
208 | ||
209 | proc[0].p_szpt = CLSIZE; | |
210 | if (newproc(0)) { | |
211 | expand(clrnd((int)btoc(szicode)), 0); | |
8011f5df | 212 | (void) swpexpand(u.u_dsize, (size_t)0, &u.u_dmap, &u.u_smap); |
28c7a4c5 MK |
213 | (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode); |
214 | /* | |
215 | * Return goes to loc. 0 of user init | |
216 | * code just copied out. | |
217 | */ | |
218 | return; | |
219 | } | |
c4708522 BJ |
220 | /* |
221 | * make page-out daemon (process 2) | |
c34926db | 222 | * the daemon has ctopt(nswbuf*CLSIZE*KLMAX) pages of page |
c4708522 BJ |
223 | * table so that it can map dirty pages into |
224 | * its address space during asychronous pushes. | |
225 | */ | |
c34926db | 226 | proc[0].p_szpt = clrnd(ctopt(nswbuf*CLSIZE*KLMAX + UPAGES)); |
c4708522 BJ |
227 | if (newproc(0)) { |
228 | proc[2].p_flag |= SLOAD|SSYS; | |
c34926db | 229 | proc[2].p_dsize = u.u_dsize = nswbuf*CLSIZE*KLMAX; |
c4708522 | 230 | pageout(); |
b7892118 | 231 | /*NOTREACHED*/ |
c4708522 BJ |
232 | } |
233 | ||
234 | /* | |
c4708522 BJ |
235 | * enter scheduling loop |
236 | */ | |
c4708522 BJ |
237 | proc[0].p_szpt = 1; |
238 | sched(); | |
239 | } | |
240 | ||
94d38c1e KM |
241 | /* |
242 | * Initialize hash links for buffers. | |
243 | */ | |
244 | bhinit() | |
245 | { | |
246 | register int i; | |
247 | register struct bufhd *bp; | |
248 | ||
249 | for (bp = bufhash, i = 0; i < BUFHSZ; i++, bp++) | |
250 | bp->b_forw = bp->b_back = (struct buf *)bp; | |
c4708522 BJ |
251 | } |
252 | ||
c4708522 BJ |
253 | /* |
254 | * Initialize the buffer I/O system by freeing | |
255 | * all buffers and setting all device buffer lists to empty. | |
c4708522 BJ |
256 | */ |
257 | binit() | |
258 | { | |
21c39d9c | 259 | register struct buf *bp, *dp; |
c4708522 | 260 | register int i; |
af371633 | 261 | int base, residual; |
c4708522 | 262 | |
63e97a1d BJ |
263 | for (dp = bfreelist; dp < &bfreelist[BQUEUES]; dp++) { |
264 | dp->b_forw = dp->b_back = dp->av_forw = dp->av_back = dp; | |
265 | dp->b_flags = B_HEAD; | |
266 | } | |
af371633 KM |
267 | base = bufpages / nbuf; |
268 | residual = bufpages % nbuf; | |
6459ebe0 | 269 | for (i = 0; i < nbuf; i++) { |
c4708522 BJ |
270 | bp = &buf[i]; |
271 | bp->b_dev = NODEV; | |
4f083fd7 | 272 | bp->b_bcount = 0; |
6459ebe0 | 273 | bp->b_un.b_addr = buffers + i * MAXBSIZE; |
af371633 KM |
274 | if (i < residual) |
275 | bp->b_bufsize = (base + 1) * CLBYTES; | |
276 | else | |
277 | bp->b_bufsize = base * CLBYTES; | |
961945a8 | 278 | binshash(bp, &bfreelist[BQ_AGE]); |
63e97a1d | 279 | bp->b_flags = B_BUSY|B_INVAL; |
c4708522 BJ |
280 | brelse(bp); |
281 | } | |
fa1a0164 MK |
282 | } |
283 | ||
284 | /* | |
285 | * Set up swap devices. | |
286 | * Initialize linked list of free swap | |
287 | * headers. These do not actually point | |
288 | * to buffers, but rather to pages that | |
289 | * are being swapped in and out. | |
290 | */ | |
291 | swapinit() | |
292 | { | |
293 | register int i; | |
294 | register struct buf *sp = swbuf; | |
295 | struct swdevt *swp; | |
3f36033f | 296 | int error; |
fa1a0164 | 297 | |
41888f16 BJ |
298 | /* |
299 | * Count swap devices, and adjust total swap space available. | |
fa1a0164 | 300 | * Some of this space will not be available until a swapon() |
41888f16 BJ |
301 | * system is issued, usually when the system goes multi-user. |
302 | */ | |
303 | nswdev = 0; | |
d668d9ba SL |
304 | nswap = 0; |
305 | for (swp = swdevt; swp->sw_dev; swp++) { | |
41888f16 | 306 | nswdev++; |
d668d9ba SL |
307 | if (swp->sw_nblks > nswap) |
308 | nswap = swp->sw_nblks; | |
309 | } | |
41888f16 | 310 | if (nswdev == 0) |
fa1a0164 | 311 | panic("swapinit"); |
b2fdd14d | 312 | if (nswdev > 1) |
d668d9ba | 313 | nswap = ((nswap + dmmax - 1) / dmmax) * dmmax; |
41888f16 | 314 | nswap *= nswdev; |
8ede3c1b MK |
315 | /* |
316 | * If there are multiple swap areas, | |
317 | * allow more paging operations per second. | |
318 | */ | |
319 | if (nswdev > 1) | |
320 | maxpgio = (maxpgio * (2 * nswdev - 1)) / 2; | |
475798b6 KM |
321 | if (bdevvp(swdevt[0].sw_dev, &swdevt[0].sw_vp)) |
322 | panic("swapvp"); | |
3f36033f MK |
323 | if (error = swfree(0)) { |
324 | printf("swfree errno %d\n", error); /* XXX */ | |
325 | panic("swapinit swfree 0"); | |
326 | } | |
c4708522 | 327 | |
fa1a0164 MK |
328 | /* |
329 | * Now set up swap buffer headers. | |
330 | */ | |
c34926db | 331 | bswlist.av_forw = sp; |
0a34b6fd | 332 | for (i=0; i<nswbuf-1; i++, sp++) |
c34926db BJ |
333 | sp->av_forw = sp+1; |
334 | sp->av_forw = NULL; | |
c4708522 | 335 | } |
e7c7d88e BJ |
336 | |
337 | /* | |
338 | * Initialize clist by freeing all character blocks, then count | |
339 | * number of character devices. (Once-only routine) | |
340 | */ | |
341 | cinit() | |
342 | { | |
343 | register int ccp; | |
344 | register struct cblock *cp; | |
e7c7d88e BJ |
345 | |
346 | ccp = (int)cfree; | |
347 | ccp = (ccp+CROUND) & ~CROUND; | |
348 | for(cp=(struct cblock *)ccp; cp < &cfree[nclist-1]; cp++) { | |
349 | cp->c_next = cfreelist; | |
350 | cfreelist = cp; | |
351 | cfreecount += CBSIZE; | |
352 | } | |
e7c7d88e | 353 | } |