kernel: Make SMP support default (and non-optional).
[dragonfly.git] / sys / platform / vkernel / i386 / autoconf.c
CommitLineData
a7231bde
MD
1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
37 * $FreeBSD: src/sys/i386/i386/autoconf.c,v 1.146.2.2 2001/06/07 06:05:58 dd Exp $
a7231bde
MD
38 */
39
40/*
41 * Setup the system to run on the current machine.
42 *
43 * Configure() is called at boot time and initializes the vba
44 * device tables and the memory controller monitoring. Available
45 * devices are determined (from possibilities mentioned in ioconf.c),
46 * and the drivers are initialized.
47 */
48#include "opt_bootp.h"
49#include "opt_ffs.h"
50#include "opt_cd9660.h"
51#include "opt_nfs.h"
52#include "opt_nfsroot.h"
a7231bde
MD
53#include "opt_rootdevname.h"
54
55#include "use_isa.h"
56
57#include <sys/param.h>
58#include <sys/systm.h>
59#include <sys/bootmaj.h>
60#include <sys/bus.h>
6f7b98e0 61#include <sys/buf.h>
a7231bde 62#include <sys/conf.h>
a7231bde
MD
63#include <sys/diskslice.h>
64#include <sys/reboot.h>
65#include <sys/kernel.h>
66#include <sys/malloc.h>
67#include <sys/mount.h>
68#include <sys/cons.h>
69#include <sys/thread.h>
70#include <sys/device.h>
71#include <sys/machintr.h>
72
6f7b98e0
MD
73#include <vm/pmap.h>
74#include <vm/vm_kern.h>
75#include <vm/vm_extern.h>
76#include <vm/vm_pager.h>
77
4e497a4d 78#if 0
a7231bde
MD
79#include <machine/pcb.h>
80#include <machine/pcb_ext.h>
81#include <machine/vm86.h>
4e497a4d 82#endif
6a8aa90e 83#include <machine/smp.h>
a7231bde 84#include <machine/globaldata.h>
71152ac6 85#include <machine/md_var.h>
a7231bde
MD
86
87#if NISA > 0
88#include <bus/isa/isavar.h>
89
716a081c 90device_t isa_bus_device = NULL;
a7231bde
MD
91#endif
92
6f7b98e0
MD
93static void cpu_startup (void *);
94static void configure_first (void *);
95static void configure (void *);
96static void configure_final (void *);
a7231bde
MD
97
98#if defined(FFS) && defined(FFS_ROOT)
99static void setroot (void);
100#endif
101
102#if defined(NFS) && defined(NFS_ROOT)
103#if !defined(BOOTP_NFSROOT)
104static void pxe_setup_nfsdiskless(void);
105#endif
106#endif
107
7c006a9e 108SYSINIT(cpu, SI_BOOT2_START_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
a7231bde
MD
109SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
110/* SI_ORDER_SECOND is hookable */
111SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
112/* SI_ORDER_MIDDLE is hookable */
113SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
114
028066b1
MD
115cdev_t rootdev = NULL;
116cdev_t dumpdev = NULL;
a7231bde 117
6f7b98e0
MD
118/*
119 *
120 */
121static void
122cpu_startup(void *dummy)
123{
124 vm_offset_t buffer_sva;
125 vm_offset_t buffer_eva;
126 vm_offset_t pager_sva;
127 vm_offset_t pager_eva;
6f7b98e0
MD
128
129 kprintf("%s", version);
361c5f22
MD
130 kprintf("real memory = %ju (%ju MB)\n",
131 (uintmax_t)ptoa(Maxmem),
132 (uintmax_t)ptoa(Maxmem) / 1024 / 1024);
6f7b98e0
MD
133
134 if (nbuf == 0) {
135 int factor = 4 * BKVASIZE / 1024;
71152ac6 136 int kbytes = Maxmem * (PAGE_SIZE / 1024);
6f7b98e0
MD
137
138 nbuf = 50;
139 if (kbytes > 4096)
140 nbuf += min((kbytes - 4096) / factor, 65536 / factor);
141 if (kbytes > 65536)
142 nbuf += (kbytes - 65536) * 2 / (factor * 5);
143 if (maxbcache && nbuf > maxbcache / BKVASIZE)
144 nbuf = maxbcache / BKVASIZE;
145 }
146 if (nbuf > (virtual_end - virtual_start) / (BKVASIZE * 2)) {
147 nbuf = (virtual_end - virtual_start) / (BKVASIZE * 2);
f86b3b54 148 kprintf("Warning: nbufs capped at %ld\n", nbuf);
6f7b98e0
MD
149 }
150
74d62460 151 nswbuf = lmax(lmin(nbuf / 4, 256), 16);
6f7b98e0
MD
152#ifdef NSWBUF_MIN
153 if (nswbuf < NSWBUF_MIN)
154 nswbuf = NSWBUF_MIN;
155#endif
71152ac6
MD
156
157 /*
158 * Allocate memory for the buffer cache
159 */
160 buf = (void *)kmem_alloc(&kernel_map, nbuf * sizeof(struct buf));
161 swbuf = (void *)kmem_alloc(&kernel_map, nswbuf * sizeof(struct buf));
162
163
6f7b98e0
MD
164#ifdef DIRECTIO
165 ffs_rawread_setup();
166#endif
167 kmem_suballoc(&kernel_map, &clean_map, &clean_sva, &clean_eva,
168 (nbuf*BKVASIZE) + (nswbuf*MAXPHYS) + pager_map_size);
169 kmem_suballoc(&clean_map, &buffer_map, &buffer_sva, &buffer_eva,
170 (nbuf*BKVASIZE));
171 buffer_map.system_map = 1;
172 kmem_suballoc(&clean_map, &pager_map, &pager_sva, &pager_eva,
173 (nswbuf*MAXPHYS) + pager_map_size);
174 pager_map.system_map = 1;
6f7b98e0
MD
175#if defined(USERCONFIG)
176 userconfig();
177 cninit(); /* the preferred console may have changed */
178#endif
361c5f22
MD
179 kprintf("avail memory = %ju (%ju MB)\n",
180 (uintmax_t)ptoa(vmstats.v_free_count),
181 (uintmax_t)ptoa(vmstats.v_free_count) / 1024 / 1024);
6f7b98e0
MD
182 bufinit();
183 vm_pager_bufferinit();
6f7b98e0
MD
184 mp_start();
185 mp_announce();
6f7b98e0
MD
186 cpu_setregs();
187}
188
a7231bde
MD
189/*
190 * Determine i/o configuration for a machine.
191 */
192static void
193configure_first(void *dummy)
194{
195}
196
197static void
198configure(void *dummy)
199{
200 /*
201 * Final interrupt support acviation, then enable hardware interrupts.
202 */
203 MachIntrABI.finalize();
204 cpu_enable_intr();
205
206 /*
207 * This will configure all devices, generally starting with the
208 * nexus (i386/i386/nexus.c). The nexus ISA code explicitly
209 * dummies up the attach in order to delay legacy initialization
210 * until after all other busses/subsystems have had a chance
211 * at those resources.
212 */
213 root_bus_configure();
214
215#if NISA > 0
216 /*
217 * Explicitly probe and attach ISA last. The isa bus saves
218 * it's device node at attach time for us here.
219 */
220 if (isa_bus_device)
221 isa_probe_children(isa_bus_device);
222#endif
223
224 /*
225 * Allow lowering of the ipl to the lowest kernel level if we
226 * panic (or call tsleep() before clearing `cold'). No level is
227 * completely safe (since a panic may occur in a critical region
228 * at splhigh()), but we want at least bio interrupts to work.
229 */
230 safepri = TDPRI_KERN_USER;
231}
232
233static void
234configure_final(void *dummy)
235{
a7231bde
MD
236 cninit_finish();
237
4e497a4d 238 if (bootverbose)
26be20a0 239 kprintf("Device configuration finished.\n");
a7231bde
MD
240}
241
242#ifdef BOOTP
243void bootpc_init(void);
244#endif
245/*
246 * Do legacy root filesystem discovery.
247 */
248void
249cpu_rootconf(void)
250{
251#ifdef BOOTP
252 bootpc_init();
253#endif
254#if defined(NFS) && defined(NFS_ROOT)
255#if !defined(BOOTP_NFSROOT)
256 pxe_setup_nfsdiskless();
257 if (nfs_diskless_valid)
258#endif
259 rootdevnames[0] = "nfs:";
260#endif
261#if defined(FFS) && defined(FFS_ROOT)
262 if (!rootdevnames[0])
263 setroot();
264#endif
265}
266SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
267
268u_long bootdev = 0; /* not a cdev_t - encoding is different */
269
270#if defined(FFS) && defined(FFS_ROOT)
a7231bde
MD
271
272/*
273 * The boot code uses old block device major numbers to pass bootdev to
274 * us. We have to translate these to character device majors because
275 * we don't have block devices any more.
276 */
277static int
278boot_translate_majdev(int bmajor)
279{
280 static int conv[] = { BOOTMAJOR_CONVARY };
281
c157ff7a 282 if (bmajor >= 0 && bmajor < NELEM(conv))
a7231bde
MD
283 return(conv[bmajor]);
284 return(-1);
285}
286
287/*
288 * Attempt to find the device from which we were booted.
289 * If we can do so, and not instructed not to do so,
290 * set rootdevs[] and rootdevnames[] to correspond to the
291 * boot device(s).
292 *
293 * This code survives in order to allow the system to be
294 * booted from legacy environments that do not correctly
295 * populate the kernel environment. There are significant
296 * restrictions on the bootability of the system in this
297 * situation; it can only be mounting root from a 'da'
298 * 'wd' or 'fd' device, and the root filesystem must be ufs.
299 */
300static void
301setroot(void)
302{
303 int majdev, mindev, unit, slice, part;
304 cdev_t newrootdev, dev;
305 char partname[2];
306 char *sname;
307
308 if ((bootdev & B_MAGICMASK) != B_DEVMAGIC) {
26be20a0 309 kprintf("no B_DEVMAGIC (bootdev=%#lx)\n", bootdev);
a7231bde
MD
310 return;
311 }
312 majdev = boot_translate_majdev(B_TYPE(bootdev));
313 if (bootverbose) {
26be20a0 314 kprintf("bootdev: %08lx type=%ld unit=%ld "
a7231bde
MD
315 "slice=%ld part=%ld major=%d\n",
316 bootdev, B_TYPE(bootdev), B_UNIT(bootdev),
317 B_SLICE(bootdev), B_PARTITION(bootdev), majdev);
318 }
319 dev = udev2dev(makeudev(majdev, 0), 0);
320 if (!dev_is_good(dev))
321 return;
322 unit = B_UNIT(bootdev);
323 slice = B_SLICE(bootdev);
324 if (slice == WHOLE_DISK_SLICE)
325 slice = COMPATIBILITY_SLICE;
326 if (slice < 0 || slice >= MAX_SLICES) {
26be20a0 327 kprintf("bad slice\n");
a7231bde
MD
328 return;
329 }
330
4e497a4d
MD
331 part = B_PARTITION(bootdev);
332 mindev = dkmakeminor(unit, slice, part);
a7231bde
MD
333 newrootdev = udev2dev(makeudev(majdev, mindev), 0);
334 if (!dev_is_good(newrootdev))
335 return;
336 sname = dsname(newrootdev, unit, slice, part, partname);
337 rootdevnames[0] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
f8c7a42d 338 ksprintf(rootdevnames[0], "ufs:%s%s", sname, partname);
a7231bde
MD
339
340 /*
341 * For properly dangerously dedicated disks (ones with a historical
342 * bogus partition table), the boot blocks will give slice = 4, but
343 * the kernel will only provide the compatibility slice since it
344 * knows that slice 4 is not a real slice. Arrange to try mounting
345 * the compatibility slice as root if mounting the slice passed by
346 * the boot blocks fails. This handles the dangerously dedicated
347 * case and perhaps others.
348 */
349 if (slice == COMPATIBILITY_SLICE)
350 return;
351 slice = COMPATIBILITY_SLICE;
352 sname = dsname(newrootdev, unit, slice, part, partname);
353 rootdevnames[1] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
f8c7a42d 354 ksprintf(rootdevnames[1], "ufs:%s%s", sname, partname);
a7231bde
MD
355}
356#endif
357
358#if defined(NFS) && defined(NFS_ROOT)
359#if !defined(BOOTP_NFSROOT)
360
361#include <sys/socket.h>
362#include <net/if.h>
363#include <net/if_dl.h>
364#include <net/if_types.h>
365#include <net/if_var.h>
366#include <net/ethernet.h>
367#include <netinet/in.h>
368#include <vfs/nfs/rpcv2.h>
369#include <vfs/nfs/nfsproto.h>
370#include <vfs/nfs/nfs.h>
371#include <vfs/nfs/nfsdiskless.h>
372
373extern struct nfs_diskless nfs_diskless;
374
375/*
376 * Convert a kenv variable to a sockaddr. If the kenv variable does not
377 * exist the sockaddr will remain zerod out (callers typically just check
378 * sin_len). A network address of 0.0.0.0 is equivalent to failure.
379 */
380static int
381inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa)
382{
383 u_int32_t a[4];
384 char *cp;
385
386 bzero(sa, sizeof(*sa));
387
388 if ((cp = kgetenv(ev)) == NULL)
389 return(1);
e93690c2 390 if (ksscanf(cp, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]) != 4)
a7231bde
MD
391 return(1);
392 if (a[0] == 0 && a[1] == 0 && a[2] == 0 && a[3] == 0)
393 return(1);
394 /* XXX is this ordering correct? */
395 sa->sin_addr.s_addr = (a[3] << 24) + (a[2] << 16) + (a[1] << 8) + a[0];
396 sa->sin_len = sizeof(*sa);
397 sa->sin_family = AF_INET;
398 return(0);
399}
400
401static int
402hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa)
403{
404 char *cp;
405 u_int32_t a[6];
406
407 bzero(sa, sizeof(*sa));
408 sa->sdl_len = sizeof(*sa);
409 sa->sdl_family = AF_LINK;
410 sa->sdl_type = IFT_ETHER;
411 sa->sdl_alen = ETHER_ADDR_LEN;
412 if ((cp = kgetenv(ev)) == NULL)
413 return(1);
e93690c2 414 if (ksscanf(cp, "%x:%x:%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]) != 6)
a7231bde
MD
415 return(1);
416 sa->sdl_data[0] = a[0];
417 sa->sdl_data[1] = a[1];
418 sa->sdl_data[2] = a[2];
419 sa->sdl_data[3] = a[3];
420 sa->sdl_data[4] = a[4];
421 sa->sdl_data[5] = a[5];
422 return(0);
423}
424
425static int
426decode_nfshandle(char *ev, u_char *fh)
427{
428 u_char *cp;
429 int len, val;
430
431 if (((cp = kgetenv(ev)) == NULL) || (strlen(cp) < 2) || (*cp != 'X'))
432 return(0);
433 len = 0;
434 cp++;
435 for (;;) {
436 if (*cp == 'X')
437 return(len);
e93690c2 438 if ((ksscanf(cp, "%2x", &val) != 1) || (val > 0xff))
a7231bde
MD
439 return(0);
440 *(fh++) = val;
441 len++;
442 cp += 2;
443 if (len > NFSX_V2FH)
444 return(0);
445 }
446}
447
448/*
449 * Populate the essential fields in the nfsv3_diskless structure.
450 *
451 * The loader is expected to export the following environment variables:
452 *
453 * boot.netif.ip IP address on boot interface
454 * boot.netif.netmask netmask on boot interface
455 * boot.netif.gateway default gateway (optional)
456 * boot.netif.hwaddr hardware address of boot interface
b58aa6d0 457 * boot.netif.name name of boot interface (instead of hw addr)
a7231bde
MD
458 * boot.nfsroot.server IP address of root filesystem server
459 * boot.nfsroot.path path of the root filesystem on server
460 * boot.nfsroot.nfshandle NFS handle for root filesystem on server
461 */
462static void
463pxe_setup_nfsdiskless(void)
464{
465 struct nfs_diskless *nd = &nfs_diskless;
466 struct ifnet *ifp;
467 struct ifaddr *ifa;
468 struct sockaddr_dl *sdl, ourdl;
469 struct sockaddr_in myaddr, netmask;
470 char *cp;
471
472 /* set up interface */
473 if (inaddr_to_sockaddr("boot.netif.ip", &myaddr))
474 return;
475 if (inaddr_to_sockaddr("boot.netif.netmask", &netmask)) {
26be20a0 476 kprintf("PXE: no netmask\n");
a7231bde
MD
477 return;
478 }
479 bcopy(&myaddr, &nd->myif.ifra_addr, sizeof(myaddr));
480 bcopy(&myaddr, &nd->myif.ifra_broadaddr, sizeof(myaddr));
481 ((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr =
482 myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr;
483 bcopy(&netmask, &nd->myif.ifra_mask, sizeof(netmask));
484
b58aa6d0
MD
485 if ((cp = kgetenv("boot.netif.name")) != NULL) {
486 TAILQ_FOREACH(ifp, &ifnet, if_link) {
487 if (strcmp(cp, ifp->if_xname) == 0)
488 break;
489 }
490 if (ifp)
491 goto match_done;
492 kprintf("PXE: cannot find interface %s\n", cp);
493 return;
494 }
495
a7231bde 496 if (hwaddr_to_sockaddr("boot.netif.hwaddr", &ourdl)) {
26be20a0 497 kprintf("PXE: no hardware address\n");
a7231bde
MD
498 return;
499 }
500 ifa = NULL;
a7231bde 501 TAILQ_FOREACH(ifp, &ifnet, if_link) {
27eaa4f1
SZ
502 struct ifaddr_container *ifac;
503
504 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
505 ifa = ifac->ifa;
506
a7231bde
MD
507 if ((ifa->ifa_addr->sa_family == AF_LINK) &&
508 (sdl = ((struct sockaddr_dl *)ifa->ifa_addr))) {
509 if ((sdl->sdl_type == ourdl.sdl_type) &&
510 (sdl->sdl_alen == ourdl.sdl_alen) &&
511 !bcmp(sdl->sdl_data + sdl->sdl_nlen,
512 ourdl.sdl_data + ourdl.sdl_nlen,
513 sdl->sdl_alen))
514 goto match_done;
515 }
516 }
517 }
26be20a0 518 kprintf("PXE: no interface\n");
a7231bde
MD
519 return; /* no matching interface */
520match_done:
521 strlcpy(nd->myif.ifra_name, ifp->if_xname, sizeof(nd->myif.ifra_name));
522
523 /* set up gateway */
524 inaddr_to_sockaddr("boot.netif.gateway", &nd->mygateway);
525
526 /* XXX set up swap? */
527
528 /* set up root mount */
529 nd->root_args.rsize = 8192; /* XXX tunable? */
530 nd->root_args.wsize = 8192;
b58aa6d0
MD
531 nd->root_args.sotype = SOCK_STREAM;
532 nd->root_args.flags = NFSMNT_WSIZE | NFSMNT_RSIZE | NFSMNT_RESVPORT;
a7231bde 533 if (inaddr_to_sockaddr("boot.nfsroot.server", &nd->root_saddr)) {
26be20a0 534 kprintf("PXE: no server\n");
a7231bde
MD
535 return;
536 }
537 nd->root_saddr.sin_port = htons(NFS_PORT);
538
539 /*
540 * A tftp-only loader may pass NFS path information without a
541 * root handle. Generate a warning but continue configuring.
542 */
543 if (decode_nfshandle("boot.nfsroot.nfshandle", &nd->root_fh[0]) == 0) {
26be20a0 544 kprintf("PXE: Warning, no NFS handle passed from loader\n");
a7231bde
MD
545 }
546 if ((cp = kgetenv("boot.nfsroot.path")) != NULL)
547 strncpy(nd->root_hostnam, cp, MNAMELEN - 1);
548
549 nfs_diskless_valid = 1;
550}
551
552#endif
553#endif