x86_64: Remove old IOAPIC code
[dragonfly.git] / sys / platform / pc64 / x86_64 / autoconf.c
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1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
c8fe38ae 3 * Copyright (c) 2008 The DragonFly Project.
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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"
54#include "opt_bus.h"
55#include "opt_rootdevname.h"
56
57#include "use_isa.h"
58
59#include <sys/param.h>
60#include <sys/systm.h>
61#include <sys/bootmaj.h>
62#include <sys/bus.h>
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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
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74#include <machine/bootinfo.h>
75#include <machine/md_var.h>
76#include <machine/smp.h>
77#include <machine_base/icu/icu.h>
d7f50089 78
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79#include <machine/pcb.h>
80#include <machine/pcb_ext.h>
d7f50089 81#include <machine/globaldata.h>
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82
83#if NISA > 0
84#include <bus/isa/isavar.h>
85
86device_t isa_bus_device = 0;
87#endif
88
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89static void configure_first (void *);
90static void configure (void *);
91static void configure_final (void *);
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92
93#if defined(FFS) && defined(FFS_ROOT)
94static void setroot (void);
95#endif
96
97#if defined(NFS) && defined(NFS_ROOT)
98#if !defined(BOOTP_NFSROOT)
99static void pxe_setup_nfsdiskless(void);
100#endif
101#endif
102
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103SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
104/* SI_ORDER_SECOND is hookable */
105SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
106/* SI_ORDER_MIDDLE is hookable */
107SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
108
109cdev_t rootdev = NULL;
110cdev_t dumpdev = NULL;
111
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112/*
113 * Determine i/o configuration for a machine.
114 */
115static void
116configure_first(void *dummy)
117{
118}
119
120static void
121configure(void *dummy)
122{
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123 /*
124 * This will configure all devices, generally starting with the
125 * nexus (i386/i386/nexus.c). The nexus ISA code explicitly
126 * dummies up the attach in order to delay legacy initialization
127 * until after all other busses/subsystems have had a chance
128 * at those resources.
129 */
130 root_bus_configure();
131
132#if NISA > 0
133 /*
134 * Explicitly probe and attach ISA last. The isa bus saves
135 * it's device node at attach time for us here.
136 */
137 if (isa_bus_device)
138 isa_probe_children(isa_bus_device);
139#endif
140
141 /*
142 * Allow lowering of the ipl to the lowest kernel level if we
143 * panic (or call tsleep() before clearing `cold'). No level is
144 * completely safe (since a panic may occur in a critical region
145 * at splhigh()), but we want at least bio interrupts to work.
146 */
147 safepri = TDPRI_KERN_USER;
148}
149
150static void
151configure_final(void *dummy)
152{
153 cninit_finish();
154
c8fe38ae 155 if (bootverbose) {
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156#if JG
157 /*
158 * Print out the BIOS's idea of the disk geometries.
159 */
bfc09ba0 160 int i;
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161 kprintf("BIOS Geometries:\n");
162 for (i = 0; i < N_BIOS_GEOM; i++) {
163 unsigned long bios_geom;
164 int max_cylinder, max_head, max_sector;
165
166 bios_geom = bootinfo.bi_bios_geom[i];
167
168 /*
169 * XXX the bootstrap punts a 1200K floppy geometry
170 * when the get-disk-geometry interrupt fails. Skip
171 * drives that have this geometry.
172 */
173 if (bios_geom == 0x4f010f)
174 continue;
175
176 kprintf(" %x:%08lx ", i, bios_geom);
177 max_cylinder = bios_geom >> 16;
178 max_head = (bios_geom >> 8) & 0xff;
179 max_sector = bios_geom & 0xff;
180 kprintf(
181 "0..%d=%d cylinders, 0..%d=%d heads, 1..%d=%d sectors\n",
182 max_cylinder, max_cylinder + 1,
183 max_head, max_head + 1,
184 max_sector, max_sector);
185 }
186 kprintf(" %d accounted for\n", bootinfo.bi_n_bios_used);
187
d7f50089 188 kprintf("Device configuration finished.\n");
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189#endif
190 }
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191}
192
193#ifdef BOOTP
194void bootpc_init(void);
195#endif
196/*
197 * Do legacy root filesystem discovery.
198 */
199void
200cpu_rootconf(void)
201{
202#ifdef BOOTP
203 bootpc_init();
204#endif
205#if defined(NFS) && defined(NFS_ROOT)
206#if !defined(BOOTP_NFSROOT)
207 pxe_setup_nfsdiskless();
208 if (nfs_diskless_valid)
209#endif
210 rootdevnames[0] = "nfs:";
211#endif
212#if defined(FFS) && defined(FFS_ROOT)
213 if (!rootdevnames[0])
214 setroot();
215#endif
216}
217SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
218
219u_long bootdev = 0; /* not a cdev_t - encoding is different */
220
221#if defined(FFS) && defined(FFS_ROOT)
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222#define FDMAJOR 2
223#define FDUNITSHIFT 6
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224
225/*
226 * The boot code uses old block device major numbers to pass bootdev to
227 * us. We have to translate these to character device majors because
228 * we don't have block devices any more.
229 */
230static int
231boot_translate_majdev(int bmajor)
232{
233 static int conv[] = { BOOTMAJOR_CONVARY };
234
c157ff7a 235 if (bmajor >= 0 && bmajor < NELEM(conv))
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236 return(conv[bmajor]);
237 return(-1);
238}
239
240/*
241 * Attempt to find the device from which we were booted.
242 * If we can do so, and not instructed not to do so,
243 * set rootdevs[] and rootdevnames[] to correspond to the
244 * boot device(s).
245 *
246 * This code survives in order to allow the system to be
247 * booted from legacy environments that do not correctly
248 * populate the kernel environment. There are significant
249 * restrictions on the bootability of the system in this
250 * situation; it can only be mounting root from a 'da'
251 * 'wd' or 'fd' device, and the root filesystem must be ufs.
252 */
253static void
254setroot(void)
255{
256 int majdev, mindev, unit, slice, part;
257 cdev_t newrootdev, dev;
258 char partname[2];
259 char *sname;
260
261 if ((bootdev & B_MAGICMASK) != B_DEVMAGIC) {
262 kprintf("no B_DEVMAGIC (bootdev=%#lx)\n", bootdev);
263 return;
264 }
265 majdev = boot_translate_majdev(B_TYPE(bootdev));
266 if (bootverbose) {
267 kprintf("bootdev: %08lx type=%ld unit=%ld "
268 "slice=%ld part=%ld major=%d\n",
269 bootdev, B_TYPE(bootdev), B_UNIT(bootdev),
270 B_SLICE(bootdev), B_PARTITION(bootdev), majdev);
271 }
272 dev = udev2dev(makeudev(majdev, 0), 0);
273 if (!dev_is_good(dev))
274 return;
275 unit = B_UNIT(bootdev);
276 slice = B_SLICE(bootdev);
277 if (slice == WHOLE_DISK_SLICE)
278 slice = COMPATIBILITY_SLICE;
279 if (slice < 0 || slice >= MAX_SLICES) {
280 kprintf("bad slice\n");
281 return;
282 }
283
284 part = B_PARTITION(bootdev);
285 mindev = dkmakeminor(unit, slice, part);
286 newrootdev = udev2dev(makeudev(majdev, mindev), 0);
287 if (!dev_is_good(newrootdev))
288 return;
289 sname = dsname(newrootdev, unit, slice, part, partname);
290 rootdevnames[0] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
291 ksprintf(rootdevnames[0], "ufs:%s%s", sname, partname);
292
293 /*
294 * For properly dangerously dedicated disks (ones with a historical
295 * bogus partition table), the boot blocks will give slice = 4, but
296 * the kernel will only provide the compatibility slice since it
297 * knows that slice 4 is not a real slice. Arrange to try mounting
298 * the compatibility slice as root if mounting the slice passed by
299 * the boot blocks fails. This handles the dangerously dedicated
300 * case and perhaps others.
301 */
302 if (slice == COMPATIBILITY_SLICE)
303 return;
304 slice = COMPATIBILITY_SLICE;
305 sname = dsname(newrootdev, unit, slice, part, partname);
306 rootdevnames[1] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
307 ksprintf(rootdevnames[1], "ufs:%s%s", sname, partname);
308}
309#endif
310
311#if defined(NFS) && defined(NFS_ROOT)
312#if !defined(BOOTP_NFSROOT)
313
314#include <sys/socket.h>
315#include <net/if.h>
316#include <net/if_dl.h>
317#include <net/if_types.h>
318#include <net/if_var.h>
319#include <net/ethernet.h>
320#include <netinet/in.h>
321#include <vfs/nfs/rpcv2.h>
322#include <vfs/nfs/nfsproto.h>
323#include <vfs/nfs/nfs.h>
324#include <vfs/nfs/nfsdiskless.h>
325
326extern struct nfs_diskless nfs_diskless;
327
328/*
329 * Convert a kenv variable to a sockaddr. If the kenv variable does not
330 * exist the sockaddr will remain zerod out (callers typically just check
331 * sin_len). A network address of 0.0.0.0 is equivalent to failure.
332 */
333static int
334inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa)
335{
336 u_int32_t a[4];
337 char *cp;
338
339 bzero(sa, sizeof(*sa));
340
341 if ((cp = kgetenv(ev)) == NULL)
342 return(1);
343 if (ksscanf(cp, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]) != 4)
344 return(1);
345 if (a[0] == 0 && a[1] == 0 && a[2] == 0 && a[3] == 0)
346 return(1);
347 /* XXX is this ordering correct? */
348 sa->sin_addr.s_addr = (a[3] << 24) + (a[2] << 16) + (a[1] << 8) + a[0];
349 sa->sin_len = sizeof(*sa);
350 sa->sin_family = AF_INET;
351 return(0);
352}
353
354static int
355hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa)
356{
357 char *cp;
358 u_int32_t a[6];
359
360 bzero(sa, sizeof(*sa));
361 sa->sdl_len = sizeof(*sa);
362 sa->sdl_family = AF_LINK;
363 sa->sdl_type = IFT_ETHER;
364 sa->sdl_alen = ETHER_ADDR_LEN;
365 if ((cp = kgetenv(ev)) == NULL)
366 return(1);
367 if (ksscanf(cp, "%x:%x:%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]) != 6)
368 return(1);
369 sa->sdl_data[0] = a[0];
370 sa->sdl_data[1] = a[1];
371 sa->sdl_data[2] = a[2];
372 sa->sdl_data[3] = a[3];
373 sa->sdl_data[4] = a[4];
374 sa->sdl_data[5] = a[5];
375 return(0);
376}
377
378static int
379decode_nfshandle(char *ev, u_char *fh)
380{
381 u_char *cp;
382 int len, val;
383
384 if (((cp = kgetenv(ev)) == NULL) || (strlen(cp) < 2) || (*cp != 'X'))
385 return(0);
386 len = 0;
387 cp++;
388 for (;;) {
389 if (*cp == 'X')
390 return(len);
391 if ((ksscanf(cp, "%2x", &val) != 1) || (val > 0xff))
392 return(0);
393 *(fh++) = val;
394 len++;
395 cp += 2;
396 if (len > NFSX_V2FH)
397 return(0);
398 }
399}
400
401/*
402 * Populate the essential fields in the nfsv3_diskless structure.
403 *
404 * The loader is expected to export the following environment variables:
405 *
406 * boot.netif.ip IP address on boot interface
407 * boot.netif.netmask netmask on boot interface
408 * boot.netif.gateway default gateway (optional)
409 * boot.netif.hwaddr hardware address of boot interface
410 * boot.nfsroot.server IP address of root filesystem server
411 * boot.nfsroot.path path of the root filesystem on server
412 * boot.nfsroot.nfshandle NFS handle for root filesystem on server
413 */
414static void
415pxe_setup_nfsdiskless(void)
416{
417 struct nfs_diskless *nd = &nfs_diskless;
418 struct ifnet *ifp;
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419 struct sockaddr_dl *sdl, ourdl;
420 struct sockaddr_in myaddr, netmask;
421 char *cp;
422
423 /* set up interface */
424 if (inaddr_to_sockaddr("boot.netif.ip", &myaddr))
425 return;
426 if (inaddr_to_sockaddr("boot.netif.netmask", &netmask)) {
427 kprintf("PXE: no netmask\n");
428 return;
429 }
430 bcopy(&myaddr, &nd->myif.ifra_addr, sizeof(myaddr));
431 bcopy(&myaddr, &nd->myif.ifra_broadaddr, sizeof(myaddr));
432 ((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr =
433 myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr;
434 bcopy(&netmask, &nd->myif.ifra_mask, sizeof(netmask));
435
436 if (hwaddr_to_sockaddr("boot.netif.hwaddr", &ourdl)) {
437 kprintf("PXE: no hardware address\n");
438 return;
439 }
d7f50089 440 TAILQ_FOREACH(ifp, &ifnet, if_link) {
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441 struct ifaddr_container *ifac;
442
443 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
c8fe38ae 444 struct ifaddr *ifa = ifac->ifa;
27eaa4f1 445
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446 if ((ifa->ifa_addr->sa_family == AF_LINK) &&
447 (sdl = ((struct sockaddr_dl *)ifa->ifa_addr))) {
448 if ((sdl->sdl_type == ourdl.sdl_type) &&
449 (sdl->sdl_alen == ourdl.sdl_alen) &&
450 !bcmp(sdl->sdl_data + sdl->sdl_nlen,
451 ourdl.sdl_data + ourdl.sdl_nlen,
452 sdl->sdl_alen))
453 goto match_done;
454 }
455 }
456 }
457 kprintf("PXE: no interface\n");
458 return; /* no matching interface */
459match_done:
460 strlcpy(nd->myif.ifra_name, ifp->if_xname, sizeof(nd->myif.ifra_name));
461
462 /* set up gateway */
463 inaddr_to_sockaddr("boot.netif.gateway", &nd->mygateway);
464
465 /* XXX set up swap? */
466
467 /* set up root mount */
468 nd->root_args.rsize = 8192; /* XXX tunable? */
469 nd->root_args.wsize = 8192;
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470 nd->root_args.sotype = SOCK_STREAM;
471 nd->root_args.flags = NFSMNT_WSIZE | NFSMNT_RSIZE | NFSMNT_RESVPORT;
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472 if (inaddr_to_sockaddr("boot.nfsroot.server", &nd->root_saddr)) {
473 kprintf("PXE: no server\n");
474 return;
475 }
476 nd->root_saddr.sin_port = htons(NFS_PORT);
477
478 /*
479 * A tftp-only loader may pass NFS path information without a
480 * root handle. Generate a warning but continue configuring.
481 */
482 if (decode_nfshandle("boot.nfsroot.nfshandle", &nd->root_fh[0]) == 0) {
483 kprintf("PXE: Warning, no NFS handle passed from loader\n");
484 }
485 if ((cp = kgetenv("boot.nfsroot.path")) != NULL)
486 strncpy(nd->root_hostnam, cp, MNAMELEN - 1);
487
488 nfs_diskless_valid = 1;
489}
490
491#endif
492#endif