kernel: Make SMP support default (and non-optional).
[dragonfly.git] / sys / platform / vkernel64 / x86_64 / autoconf.c
CommitLineData
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1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * Copyright (c) 2008 The DragonFly Project.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * William Jolitz.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
38 * $FreeBSD: src/sys/i386/i386/autoconf.c,v 1.146.2.2 2001/06/07 06:05:58 dd Exp $
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39 */
40
41/*
42 * Setup the system to run on the current machine.
43 *
44 * Configure() is called at boot time and initializes the vba
45 * device tables and the memory controller monitoring. Available
46 * devices are determined (from possibilities mentioned in ioconf.c),
47 * and the drivers are initialized.
48 */
49#include "opt_bootp.h"
50#include "opt_ffs.h"
51#include "opt_cd9660.h"
52#include "opt_nfs.h"
53#include "opt_nfsroot.h"
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54#include "opt_rootdevname.h"
55
56#include "use_isa.h"
57
58#include <sys/param.h>
59#include <sys/systm.h>
60#include <sys/bootmaj.h>
61#include <sys/bus.h>
62#include <sys/buf.h>
63#include <sys/conf.h>
64#include <sys/diskslice.h>
65#include <sys/reboot.h>
66#include <sys/kernel.h>
67#include <sys/malloc.h>
68#include <sys/mount.h>
69#include <sys/cons.h>
70#include <sys/thread.h>
71#include <sys/device.h>
72#include <sys/machintr.h>
73
74#include <vm/vm_kern.h>
75#include <vm/vm_extern.h>
76#include <vm/vm_pager.h>
77
78#if 0
79#include <machine/pcb.h>
80#include <machine/pcb_ext.h>
81#endif
82#include <machine/smp.h>
83#include <machine/globaldata.h>
84#include <machine/md_var.h>
85
86#if NISA > 0
87#include <bus/isa/isavar.h>
88
716a081c 89device_t isa_bus_device = NULL;
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90#endif
91
92static void cpu_startup (void *);
93static void configure_first (void *);
94static void configure (void *);
95static void configure_final (void *);
96
97#if defined(FFS) && defined(FFS_ROOT)
98static void setroot (void);
99#endif
100
101#if defined(NFS) && defined(NFS_ROOT)
102#if !defined(BOOTP_NFSROOT)
103static void pxe_setup_nfsdiskless(void);
104#endif
105#endif
106
7c006a9e 107SYSINIT(cpu, SI_BOOT2_START_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
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108SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
109/* SI_ORDER_SECOND is hookable */
110SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
111/* SI_ORDER_MIDDLE is hookable */
112SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
113
114cdev_t rootdev = NULL;
115cdev_t dumpdev = NULL;
116
117/*
118 *
119 */
120static void
121cpu_startup(void *dummy)
122{
123 vm_offset_t buffer_sva;
124 vm_offset_t buffer_eva;
125 vm_offset_t pager_sva;
126 vm_offset_t pager_eva;
127
128 kprintf("%s", version);
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129 kprintf("real memory = %ju (%juK bytes)\n",
130 (uintmax_t)ptoa(Maxmem), (uintmax_t)(ptoa(Maxmem) / 1024));
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131
132 if (nbuf == 0) {
133 int factor = 4 * BKVASIZE / 1024;
134 int kbytes = Maxmem * (PAGE_SIZE / 1024);
135
136 nbuf = 50;
137 if (kbytes > 4096)
138 nbuf += min((kbytes - 4096) / factor, 65536 / factor);
139 if (kbytes > 65536)
140 nbuf += (kbytes - 65536) * 2 / (factor * 5);
141 if (maxbcache && nbuf > maxbcache / BKVASIZE)
142 nbuf = maxbcache / BKVASIZE;
143 }
144 if (nbuf > (virtual_end - virtual_start) / (BKVASIZE * 2)) {
145 nbuf = (virtual_end - virtual_start) / (BKVASIZE * 2);
f86b3b54 146 kprintf("Warning: nbufs capped at %ld\n", nbuf);
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147 }
148
74d62460 149 nswbuf = lmax(lmin(nbuf / 4, 256), 16);
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150#ifdef NSWBUF_MIN
151 if (nswbuf < NSWBUF_MIN)
152 nswbuf = NSWBUF_MIN;
153#endif
154
155 /*
156 * Allocate memory for the buffer cache
157 */
158 buf = (void *)kmem_alloc(&kernel_map, nbuf * sizeof(struct buf));
159 swbuf = (void *)kmem_alloc(&kernel_map, nswbuf * sizeof(struct buf));
160
161
162#ifdef DIRECTIO
163 ffs_rawread_setup();
164#endif
165 kmem_suballoc(&kernel_map, &clean_map, &clean_sva, &clean_eva,
166 (nbuf*BKVASIZE) + (nswbuf*MAXPHYS) + pager_map_size);
167 kmem_suballoc(&clean_map, &buffer_map, &buffer_sva, &buffer_eva,
168 (nbuf*BKVASIZE));
169 buffer_map.system_map = 1;
170 kmem_suballoc(&clean_map, &pager_map, &pager_sva, &pager_eva,
171 (nswbuf*MAXPHYS) + pager_map_size);
172 pager_map.system_map = 1;
173#if defined(USERCONFIG)
174 userconfig();
175 cninit(); /* the preferred console may have changed */
176#endif
177 kprintf("avail memory = %lu (%luK bytes)\n", ptoa(vmstats.v_free_count),
178 ptoa(vmstats.v_free_count) / 1024);
179 bufinit();
180 vm_pager_bufferinit();
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181 mp_start();
182 mp_announce();
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183 cpu_setregs();
184}
185
186/*
187 * Determine i/o configuration for a machine.
188 */
189static void
190configure_first(void *dummy)
191{
192}
193
194static void
195configure(void *dummy)
196{
197 /*
198 * Final interrupt support acviation, then enable hardware interrupts.
199 */
200 MachIntrABI.finalize();
201 cpu_enable_intr();
202
203 /*
204 * This will configure all devices, generally starting with the
205 * nexus (i386/i386/nexus.c). The nexus ISA code explicitly
206 * dummies up the attach in order to delay legacy initialization
207 * until after all other busses/subsystems have had a chance
208 * at those resources.
209 */
210 root_bus_configure();
211
212#if NISA > 0
213 /*
214 * Explicitly probe and attach ISA last. The isa bus saves
215 * it's device node at attach time for us here.
216 */
217 if (isa_bus_device)
218 isa_probe_children(isa_bus_device);
219#endif
220
221 /*
222 * Allow lowering of the ipl to the lowest kernel level if we
223 * panic (or call tsleep() before clearing `cold'). No level is
224 * completely safe (since a panic may occur in a critical region
225 * at splhigh()), but we want at least bio interrupts to work.
226 */
227 safepri = TDPRI_KERN_USER;
228}
229
230static void
231configure_final(void *dummy)
232{
233 cninit_finish();
234
235 if (bootverbose)
236 kprintf("Device configuration finished.\n");
237}
238
239#ifdef BOOTP
240void bootpc_init(void);
241#endif
242/*
243 * Do legacy root filesystem discovery.
244 */
245void
246cpu_rootconf(void)
247{
248#ifdef BOOTP
249 bootpc_init();
250#endif
251#if defined(NFS) && defined(NFS_ROOT)
252#if !defined(BOOTP_NFSROOT)
253 pxe_setup_nfsdiskless();
254 if (nfs_diskless_valid)
255#endif
256 rootdevnames[0] = "nfs:";
257#endif
258#if defined(FFS) && defined(FFS_ROOT)
259 if (!rootdevnames[0])
260 setroot();
261#endif
262}
263SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
264
265u_long bootdev = 0; /* not a cdev_t - encoding is different */
266
267#if defined(FFS) && defined(FFS_ROOT)
268
269/*
270 * The boot code uses old block device major numbers to pass bootdev to
271 * us. We have to translate these to character device majors because
272 * we don't have block devices any more.
273 */
274static int
275boot_translate_majdev(int bmajor)
276{
277 static int conv[] = { BOOTMAJOR_CONVARY };
278
c157ff7a 279 if (bmajor >= 0 && bmajor < NELEM(conv))
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280 return(conv[bmajor]);
281 return(-1);
282}
283
284/*
285 * Attempt to find the device from which we were booted.
286 * If we can do so, and not instructed not to do so,
287 * set rootdevs[] and rootdevnames[] to correspond to the
288 * boot device(s).
289 *
290 * This code survives in order to allow the system to be
291 * booted from legacy environments that do not correctly
292 * populate the kernel environment. There are significant
293 * restrictions on the bootability of the system in this
294 * situation; it can only be mounting root from a 'da'
295 * 'wd' or 'fd' device, and the root filesystem must be ufs.
296 */
297static void
298setroot(void)
299{
300 int majdev, mindev, unit, slice, part;
301 cdev_t newrootdev, dev;
302 char partname[2];
303 char *sname;
304
305 if ((bootdev & B_MAGICMASK) != B_DEVMAGIC) {
306 kprintf("no B_DEVMAGIC (bootdev=%#lx)\n", bootdev);
307 return;
308 }
309 majdev = boot_translate_majdev(B_TYPE(bootdev));
310 if (bootverbose) {
311 kprintf("bootdev: %08lx type=%ld unit=%ld "
312 "slice=%ld part=%ld major=%d\n",
313 bootdev, B_TYPE(bootdev), B_UNIT(bootdev),
314 B_SLICE(bootdev), B_PARTITION(bootdev), majdev);
315 }
316 dev = udev2dev(makeudev(majdev, 0), 0);
317 if (!dev_is_good(dev))
318 return;
319 unit = B_UNIT(bootdev);
320 slice = B_SLICE(bootdev);
321 if (slice == WHOLE_DISK_SLICE)
322 slice = COMPATIBILITY_SLICE;
323 if (slice < 0 || slice >= MAX_SLICES) {
324 kprintf("bad slice\n");
325 return;
326 }
327
328 part = B_PARTITION(bootdev);
329 mindev = dkmakeminor(unit, slice, part);
330 newrootdev = udev2dev(makeudev(majdev, mindev), 0);
331 if (!dev_is_good(newrootdev))
332 return;
333 sname = dsname(newrootdev, unit, slice, part, partname);
334 rootdevnames[0] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
335 ksprintf(rootdevnames[0], "ufs:%s%s", sname, partname);
336
337 /*
338 * For properly dangerously dedicated disks (ones with a historical
339 * bogus partition table), the boot blocks will give slice = 4, but
340 * the kernel will only provide the compatibility slice since it
341 * knows that slice 4 is not a real slice. Arrange to try mounting
342 * the compatibility slice as root if mounting the slice passed by
343 * the boot blocks fails. This handles the dangerously dedicated
344 * case and perhaps others.
345 */
346 if (slice == COMPATIBILITY_SLICE)
347 return;
348 slice = COMPATIBILITY_SLICE;
349 sname = dsname(newrootdev, unit, slice, part, partname);
350 rootdevnames[1] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
351 ksprintf(rootdevnames[1], "ufs:%s%s", sname, partname);
352}
353#endif
354
355#if defined(NFS) && defined(NFS_ROOT)
356#if !defined(BOOTP_NFSROOT)
357
358#include <sys/socket.h>
359#include <net/if.h>
360#include <net/if_dl.h>
361#include <net/if_types.h>
362#include <net/if_var.h>
363#include <net/ethernet.h>
364#include <netinet/in.h>
365#include <vfs/nfs/rpcv2.h>
366#include <vfs/nfs/nfsproto.h>
367#include <vfs/nfs/nfs.h>
368#include <vfs/nfs/nfsdiskless.h>
369
370extern struct nfs_diskless nfs_diskless;
371
372/*
373 * Convert a kenv variable to a sockaddr. If the kenv variable does not
374 * exist the sockaddr will remain zerod out (callers typically just check
375 * sin_len). A network address of 0.0.0.0 is equivalent to failure.
376 */
377static int
378inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa)
379{
380 u_int32_t a[4];
381 char *cp;
382
383 bzero(sa, sizeof(*sa));
384
385 if ((cp = kgetenv(ev)) == NULL)
386 return(1);
387 if (ksscanf(cp, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]) != 4)
388 return(1);
389 if (a[0] == 0 && a[1] == 0 && a[2] == 0 && a[3] == 0)
390 return(1);
391 /* XXX is this ordering correct? */
392 sa->sin_addr.s_addr = (a[3] << 24) + (a[2] << 16) + (a[1] << 8) + a[0];
393 sa->sin_len = sizeof(*sa);
394 sa->sin_family = AF_INET;
395 return(0);
396}
397
398static int
399hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa)
400{
401 char *cp;
402 u_int32_t a[6];
403
404 bzero(sa, sizeof(*sa));
405 sa->sdl_len = sizeof(*sa);
406 sa->sdl_family = AF_LINK;
407 sa->sdl_type = IFT_ETHER;
408 sa->sdl_alen = ETHER_ADDR_LEN;
409 if ((cp = kgetenv(ev)) == NULL)
410 return(1);
411 if (ksscanf(cp, "%x:%x:%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]) != 6)
412 return(1);
413 sa->sdl_data[0] = a[0];
414 sa->sdl_data[1] = a[1];
415 sa->sdl_data[2] = a[2];
416 sa->sdl_data[3] = a[3];
417 sa->sdl_data[4] = a[4];
418 sa->sdl_data[5] = a[5];
419 return(0);
420}
421
422static int
423decode_nfshandle(char *ev, u_char *fh)
424{
425 u_char *cp;
426 int len, val;
427
428 if (((cp = kgetenv(ev)) == NULL) || (strlen(cp) < 2) || (*cp != 'X'))
429 return(0);
430 len = 0;
431 cp++;
432 for (;;) {
433 if (*cp == 'X')
434 return(len);
435 if ((ksscanf(cp, "%2x", &val) != 1) || (val > 0xff))
436 return(0);
437 *(fh++) = val;
438 len++;
439 cp += 2;
440 if (len > NFSX_V2FH)
441 return(0);
442 }
443}
444
445/*
446 * Populate the essential fields in the nfsv3_diskless structure.
447 *
448 * The loader is expected to export the following environment variables:
449 *
450 * boot.netif.ip IP address on boot interface
451 * boot.netif.netmask netmask on boot interface
452 * boot.netif.gateway default gateway (optional)
453 * boot.netif.hwaddr hardware address of boot interface
454 * boot.netif.name name of boot interface (instead of hw addr)
455 * boot.nfsroot.server IP address of root filesystem server
456 * boot.nfsroot.path path of the root filesystem on server
457 * boot.nfsroot.nfshandle NFS handle for root filesystem on server
458 */
459static void
460pxe_setup_nfsdiskless(void)
461{
462 struct nfs_diskless *nd = &nfs_diskless;
463 struct ifnet *ifp;
464 struct ifaddr *ifa;
465 struct sockaddr_dl *sdl, ourdl;
466 struct sockaddr_in myaddr, netmask;
467 char *cp;
468
469 /* set up interface */
470 if (inaddr_to_sockaddr("boot.netif.ip", &myaddr))
471 return;
472 if (inaddr_to_sockaddr("boot.netif.netmask", &netmask)) {
473 kprintf("PXE: no netmask\n");
474 return;
475 }
476 bcopy(&myaddr, &nd->myif.ifra_addr, sizeof(myaddr));
477 bcopy(&myaddr, &nd->myif.ifra_broadaddr, sizeof(myaddr));
478 ((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr =
479 myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr;
480 bcopy(&netmask, &nd->myif.ifra_mask, sizeof(netmask));
481
482 if ((cp = kgetenv("boot.netif.name")) != NULL) {
483 TAILQ_FOREACH(ifp, &ifnet, if_link) {
484 if (strcmp(cp, ifp->if_xname) == 0)
485 break;
486 }
487 if (ifp)
488 goto match_done;
489 kprintf("PXE: cannot find interface %s\n", cp);
490 return;
491 }
492
493 if (hwaddr_to_sockaddr("boot.netif.hwaddr", &ourdl)) {
494 kprintf("PXE: no hardware address\n");
495 return;
496 }
497 ifa = NULL;
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498 TAILQ_FOREACH(ifp, &ifnet, if_link) {
499 struct ifaddr_container *ifac;
500
501 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
502 ifa = ifac->ifa;
503
504 if ((ifa->ifa_addr->sa_family == AF_LINK) &&
505 (sdl = ((struct sockaddr_dl *)ifa->ifa_addr))) {
506 if ((sdl->sdl_type == ourdl.sdl_type) &&
507 (sdl->sdl_alen == ourdl.sdl_alen) &&
508 !bcmp(sdl->sdl_data + sdl->sdl_nlen,
509 ourdl.sdl_data + ourdl.sdl_nlen,
510 sdl->sdl_alen))
511 goto match_done;
512 }
513 }
514 }
515 kprintf("PXE: no interface\n");
516 return; /* no matching interface */
517match_done:
518 strlcpy(nd->myif.ifra_name, ifp->if_xname, sizeof(nd->myif.ifra_name));
519
520 /* set up gateway */
521 inaddr_to_sockaddr("boot.netif.gateway", &nd->mygateway);
522
523 /* XXX set up swap? */
524
525 /* set up root mount */
526 nd->root_args.rsize = 8192; /* XXX tunable? */
527 nd->root_args.wsize = 8192;
528 nd->root_args.sotype = SOCK_STREAM;
529 nd->root_args.flags = NFSMNT_WSIZE | NFSMNT_RSIZE | NFSMNT_RESVPORT;
530 if (inaddr_to_sockaddr("boot.nfsroot.server", &nd->root_saddr)) {
531 kprintf("PXE: no server\n");
532 return;
533 }
534 nd->root_saddr.sin_port = htons(NFS_PORT);
535
536 /*
537 * A tftp-only loader may pass NFS path information without a
538 * root handle. Generate a warning but continue configuring.
539 */
540 if (decode_nfshandle("boot.nfsroot.nfshandle", &nd->root_fh[0]) == 0) {
541 kprintf("PXE: Warning, no NFS handle passed from loader\n");
542 }
543 if ((cp = kgetenv("boot.nfsroot.path")) != NULL)
544 strncpy(nd->root_hostnam, cp, MNAMELEN - 1);
545
546 nfs_diskless_valid = 1;
547}
548
549#endif
550#endif