i386 - Get completely rid of APIC_IO
[dragonfly.git] / sys / platform / pc32 / i386 / autoconf.c
CommitLineData
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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 $
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"
53#include "opt_bus.h"
54#include "opt_rootdevname.h"
55
1f2de5d4 56#include "use_isa.h"
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57
58#include <sys/param.h>
59#include <sys/systm.h>
fabb8ceb 60#include <sys/bootmaj.h>
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61#include <sys/bus.h>
62#include <sys/conf.h>
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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>
8f41e33b 69#include <sys/thread.h>
335dda38 70#include <sys/device.h>
37e7efec 71#include <sys/machintr.h>
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72
73#include <machine/bootinfo.h>
984263bc 74#include <machine/md_var.h>
984263bc 75#include <machine/smp.h>
a9295349 76#include <machine_base/icu/icu.h>
984263bc 77
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78#include <machine/pcb.h>
79#include <machine/pcb_ext.h>
80#include <machine/vm86.h>
81#include <machine/globaldata.h>
8f41e33b 82
984263bc 83#if NISA > 0
1f2de5d4 84#include <bus/isa/isavar.h>
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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)
3ae0cd58 94static void setroot (void);
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95#endif
96
97#if defined(NFS) && defined(NFS_ROOT)
f15db79e 98#if !defined(BOOTP_NFSROOT)
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99static void pxe_setup_nfsdiskless(void);
100#endif
f15db79e 101#endif
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102
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
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109cdev_t rootdev = NULL;
110cdev_t dumpdev = NULL;
984263bc 111
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112/*
113 * Determine i/o configuration for a machine.
114 */
115static void
f123d5a1 116configure_first(void *dummy)
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117{
118}
119
120static void
f123d5a1 121configure(void *dummy)
984263bc 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 */
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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 /*
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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 */
e43a034f 147 safepri = TDPRI_KERN_USER;
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148}
149
150static void
f123d5a1 151configure_final(void *dummy)
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152{
153 int i;
154
155 cninit_finish();
156
157 if (bootverbose) {
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158#ifdef SMP /* APIC-IO */
159 if (apic_io_enable)
160 imen_dump();
161#endif
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162
163 /*
164 * Print out the BIOS's idea of the disk geometries.
165 */
26be20a0 166 kprintf("BIOS Geometries:\n");
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167 for (i = 0; i < N_BIOS_GEOM; i++) {
168 unsigned long bios_geom;
169 int max_cylinder, max_head, max_sector;
170
171 bios_geom = bootinfo.bi_bios_geom[i];
172
173 /*
174 * XXX the bootstrap punts a 1200K floppy geometry
175 * when the get-disk-geometry interrupt fails. Skip
176 * drives that have this geometry.
177 */
178 if (bios_geom == 0x4f010f)
179 continue;
180
26be20a0 181 kprintf(" %x:%08lx ", i, bios_geom);
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182 max_cylinder = bios_geom >> 16;
183 max_head = (bios_geom >> 8) & 0xff;
184 max_sector = bios_geom & 0xff;
26be20a0 185 kprintf(
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186 "0..%d=%d cylinders, 0..%d=%d heads, 1..%d=%d sectors\n",
187 max_cylinder, max_cylinder + 1,
188 max_head, max_head + 1,
189 max_sector, max_sector);
190 }
26be20a0 191 kprintf(" %d accounted for\n", bootinfo.bi_n_bios_used);
984263bc 192
26be20a0 193 kprintf("Device configuration finished.\n");
984263bc 194 }
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195}
196
197#ifdef BOOTP
f15db79e 198void bootpc_init(void);
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199#endif
200/*
201 * Do legacy root filesystem discovery.
202 */
203void
f123d5a1 204cpu_rootconf(void)
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205{
206#ifdef BOOTP
207 bootpc_init();
208#endif
209#if defined(NFS) && defined(NFS_ROOT)
210#if !defined(BOOTP_NFSROOT)
211 pxe_setup_nfsdiskless();
212 if (nfs_diskless_valid)
213#endif
214 rootdevnames[0] = "nfs:";
215#endif
216#if defined(FFS) && defined(FFS_ROOT)
217 if (!rootdevnames[0])
218 setroot();
219#endif
220}
221SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
222
b13267a5 223u_long bootdev = 0; /* not a cdev_t - encoding is different */
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224
225#if defined(FFS) && defined(FFS_ROOT)
226#define FDMAJOR 2
227#define FDUNITSHIFT 6
228
229/*
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230 * The boot code uses old block device major numbers to pass bootdev to
231 * us. We have to translate these to character device majors because
232 * we don't have block devices any more.
233 */
234static int
235boot_translate_majdev(int bmajor)
236{
237 static int conv[] = { BOOTMAJOR_CONVARY };
238
239 if (bmajor >= 0 && bmajor < sizeof(conv)/sizeof(conv[0]))
240 return(conv[bmajor]);
241 return(-1);
242}
243
244/*
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245 * Attempt to find the device from which we were booted.
246 * If we can do so, and not instructed not to do so,
247 * set rootdevs[] and rootdevnames[] to correspond to the
248 * boot device(s).
249 *
250 * This code survives in order to allow the system to be
251 * booted from legacy environments that do not correctly
252 * populate the kernel environment. There are significant
253 * restrictions on the bootability of the system in this
254 * situation; it can only be mounting root from a 'da'
255 * 'wd' or 'fd' device, and the root filesystem must be ufs.
256 */
257static void
f123d5a1 258setroot(void)
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259{
260 int majdev, mindev, unit, slice, part;
b13267a5 261 cdev_t newrootdev, dev;
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262 char partname[2];
263 char *sname;
264
265 if ((bootdev & B_MAGICMASK) != B_DEVMAGIC) {
26be20a0 266 kprintf("no B_DEVMAGIC (bootdev=%#lx)\n", bootdev);
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267 return;
268 }
fabb8ceb 269 majdev = boot_translate_majdev(B_TYPE(bootdev));
422bd071 270 if (bootverbose) {
26be20a0 271 kprintf("bootdev: %08lx type=%ld unit=%ld "
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272 "slice=%ld part=%ld major=%d\n",
273 bootdev, B_TYPE(bootdev), B_UNIT(bootdev),
274 B_SLICE(bootdev), B_PARTITION(bootdev), majdev);
275 }
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276 dev = udev2dev(makeudev(majdev, 0), 0);
277 if (!dev_is_good(dev))
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278 return;
279 unit = B_UNIT(bootdev);
280 slice = B_SLICE(bootdev);
281 if (slice == WHOLE_DISK_SLICE)
282 slice = COMPATIBILITY_SLICE;
283 if (slice < 0 || slice >= MAX_SLICES) {
26be20a0 284 kprintf("bad slice\n");
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285 return;
286 }
287
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288 part = B_PARTITION(bootdev);
289 mindev = dkmakeminor(unit, slice, part);
e4c9c0c8 290 newrootdev = udev2dev(makeudev(majdev, mindev), 0);
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291 if (!dev_is_good(newrootdev))
292 return;
984263bc 293 sname = dsname(newrootdev, unit, slice, part, partname);
efda3bd0 294 rootdevnames[0] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
f8c7a42d 295 ksprintf(rootdevnames[0], "ufs:%s%s", sname, partname);
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296
297 /*
298 * For properly dangerously dedicated disks (ones with a historical
299 * bogus partition table), the boot blocks will give slice = 4, but
300 * the kernel will only provide the compatibility slice since it
301 * knows that slice 4 is not a real slice. Arrange to try mounting
302 * the compatibility slice as root if mounting the slice passed by
303 * the boot blocks fails. This handles the dangerously dedicated
304 * case and perhaps others.
305 */
306 if (slice == COMPATIBILITY_SLICE)
307 return;
308 slice = COMPATIBILITY_SLICE;
309 sname = dsname(newrootdev, unit, slice, part, partname);
efda3bd0 310 rootdevnames[1] = kmalloc(strlen(sname) + 6, M_DEVBUF, M_WAITOK);
f8c7a42d 311 ksprintf(rootdevnames[1], "ufs:%s%s", sname, partname);
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312}
313#endif
314
315#if defined(NFS) && defined(NFS_ROOT)
f15db79e 316#if !defined(BOOTP_NFSROOT)
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317
318#include <sys/socket.h>
319#include <net/if.h>
320#include <net/if_dl.h>
321#include <net/if_types.h>
322#include <net/if_var.h>
323#include <net/ethernet.h>
324#include <netinet/in.h>
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325#include <vfs/nfs/rpcv2.h>
326#include <vfs/nfs/nfsproto.h>
327#include <vfs/nfs/nfs.h>
328#include <vfs/nfs/nfsdiskless.h>
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329
330extern struct nfs_diskless nfs_diskless;
331
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332/*
333 * Convert a kenv variable to a sockaddr. If the kenv variable does not
334 * exist the sockaddr will remain zerod out (callers typically just check
335 * sin_len). A network address of 0.0.0.0 is equivalent to failure.
336 */
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337static int
338inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa)
339{
340 u_int32_t a[4];
341 char *cp;
342
343 bzero(sa, sizeof(*sa));
984263bc 344
bc01a404 345 if ((cp = kgetenv(ev)) == NULL)
984263bc 346 return(1);
e93690c2 347 if (ksscanf(cp, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]) != 4)
984263bc 348 return(1);
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349 if (a[0] == 0 && a[1] == 0 && a[2] == 0 && a[3] == 0)
350 return(1);
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351 /* XXX is this ordering correct? */
352 sa->sin_addr.s_addr = (a[3] << 24) + (a[2] << 16) + (a[1] << 8) + a[0];
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353 sa->sin_len = sizeof(*sa);
354 sa->sin_family = AF_INET;
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355 return(0);
356}
357
358static int
359hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa)
360{
361 char *cp;
362 u_int32_t a[6];
363
364 bzero(sa, sizeof(*sa));
365 sa->sdl_len = sizeof(*sa);
366 sa->sdl_family = AF_LINK;
367 sa->sdl_type = IFT_ETHER;
368 sa->sdl_alen = ETHER_ADDR_LEN;
bc01a404 369 if ((cp = kgetenv(ev)) == NULL)
984263bc 370 return(1);
e93690c2 371 if (ksscanf(cp, "%x:%x:%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]) != 6)
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372 return(1);
373 sa->sdl_data[0] = a[0];
374 sa->sdl_data[1] = a[1];
375 sa->sdl_data[2] = a[2];
376 sa->sdl_data[3] = a[3];
377 sa->sdl_data[4] = a[4];
378 sa->sdl_data[5] = a[5];
379 return(0);
380}
381
382static int
383decode_nfshandle(char *ev, u_char *fh)
384{
385 u_char *cp;
386 int len, val;
387
bc01a404 388 if (((cp = kgetenv(ev)) == NULL) || (strlen(cp) < 2) || (*cp != 'X'))
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389 return(0);
390 len = 0;
391 cp++;
392 for (;;) {
393 if (*cp == 'X')
394 return(len);
e93690c2 395 if ((ksscanf(cp, "%2x", &val) != 1) || (val > 0xff))
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396 return(0);
397 *(fh++) = val;
398 len++;
399 cp += 2;
400 if (len > NFSX_V2FH)
401 return(0);
402 }
403}
404
405/*
406 * Populate the essential fields in the nfsv3_diskless structure.
407 *
408 * The loader is expected to export the following environment variables:
409 *
410 * boot.netif.ip IP address on boot interface
411 * boot.netif.netmask netmask on boot interface
412 * boot.netif.gateway default gateway (optional)
413 * boot.netif.hwaddr hardware address of boot interface
414 * boot.nfsroot.server IP address of root filesystem server
415 * boot.nfsroot.path path of the root filesystem on server
416 * boot.nfsroot.nfshandle NFS handle for root filesystem on server
417 */
418static void
f123d5a1 419pxe_setup_nfsdiskless(void)
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420{
421 struct nfs_diskless *nd = &nfs_diskless;
422 struct ifnet *ifp;
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423 struct sockaddr_dl *sdl, ourdl;
424 struct sockaddr_in myaddr, netmask;
425 char *cp;
426
427 /* set up interface */
428 if (inaddr_to_sockaddr("boot.netif.ip", &myaddr))
429 return;
430 if (inaddr_to_sockaddr("boot.netif.netmask", &netmask)) {
26be20a0 431 kprintf("PXE: no netmask\n");
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432 return;
433 }
434 bcopy(&myaddr, &nd->myif.ifra_addr, sizeof(myaddr));
435 bcopy(&myaddr, &nd->myif.ifra_broadaddr, sizeof(myaddr));
436 ((struct sockaddr_in *) &nd->myif.ifra_broadaddr)->sin_addr.s_addr =
437 myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr;
438 bcopy(&netmask, &nd->myif.ifra_mask, sizeof(netmask));
439
440 if (hwaddr_to_sockaddr("boot.netif.hwaddr", &ourdl)) {
26be20a0 441 kprintf("PXE: no hardware address\n");
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442 return;
443 }
984263bc 444 TAILQ_FOREACH(ifp, &ifnet, if_link) {
b2632176
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445 struct ifaddr_container *ifac;
446
447 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
448 struct ifaddr *ifa = ifac->ifa;
449
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450 if ((ifa->ifa_addr->sa_family == AF_LINK) &&
451 (sdl = ((struct sockaddr_dl *)ifa->ifa_addr))) {
452 if ((sdl->sdl_type == ourdl.sdl_type) &&
453 (sdl->sdl_alen == ourdl.sdl_alen) &&
454 !bcmp(sdl->sdl_data + sdl->sdl_nlen,
455 ourdl.sdl_data + ourdl.sdl_nlen,
456 sdl->sdl_alen))
457 goto match_done;
458 }
459 }
460 }
26be20a0 461 kprintf("PXE: no interface\n");
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462 return; /* no matching interface */
463match_done:
3e4a09e7 464 strlcpy(nd->myif.ifra_name, ifp->if_xname, sizeof(nd->myif.ifra_name));
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465
466 /* set up gateway */
467 inaddr_to_sockaddr("boot.netif.gateway", &nd->mygateway);
468
469 /* XXX set up swap? */
470
471 /* set up root mount */
472 nd->root_args.rsize = 8192; /* XXX tunable? */
473 nd->root_args.wsize = 8192;
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474 nd->root_args.sotype = SOCK_STREAM;
475 nd->root_args.flags = NFSMNT_WSIZE | NFSMNT_RSIZE | NFSMNT_RESVPORT;
984263bc 476 if (inaddr_to_sockaddr("boot.nfsroot.server", &nd->root_saddr)) {
26be20a0 477 kprintf("PXE: no server\n");
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478 return;
479 }
480 nd->root_saddr.sin_port = htons(NFS_PORT);
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481
482 /*
483 * A tftp-only loader may pass NFS path information without a
484 * root handle. Generate a warning but continue configuring.
485 */
984263bc 486 if (decode_nfshandle("boot.nfsroot.nfshandle", &nd->root_fh[0]) == 0) {
26be20a0 487 kprintf("PXE: Warning, no NFS handle passed from loader\n");
984263bc 488 }
bc01a404 489 if ((cp = kgetenv("boot.nfsroot.path")) != NULL)
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490 strncpy(nd->root_hostnam, cp, MNAMELEN - 1);
491
492 nfs_diskless_valid = 1;
493}
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494
495#endif
984263bc 496#endif