summaryrefslogtreecommitdiffstats
path: root/sys/conf/NOTES
blob: 06af80589e5ec0b8c12707c5134fa55f42f86e6f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
# $FreeBSD$
#
# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
#
# Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
# 'makeoptions', 'hints', etc. go into the kernel configuration that you
# run config(8) with.
#
# Lines that begin with 'hint.' are NOT for config(8), they go into your
# hints file.  See /boot/device.hints and/or the 'hints' config(8) directive.
#
# Please use ``make LINT'' to create an old-style LINT file if you want to
# do kernel test-builds.
#
# This file contains machine independent kernel configuration notes.  For
# machine dependent notes, look in /sys/<arch>/conf/NOTES.
#

#
# NOTES conventions and style guide:
#
# Large block comments should begin and end with a line containing only a
# comment character.
#
# To describe a particular object, a block comment (if it exists) should
# come first.  Next should come device, options, and hints lines in that
# order.  All device and option lines must be described by a comment that
# doesn't just expand the device or option name.  Use only a concise
# comment on the same line if possible.  Very detailed descriptions of
# devices and subsystems belong in manpages.
#
# A space followed by a tab separates 'option' from an option name.  Two
# spaces followed by a tab separate 'device' from a device name.  Comments
# after an option or device should use one space after the comment character.
# To comment out a negative option that disables code and thus should not be
# enabled for LINT builds, precede 'option' with "#!".
#

#
# This is the ``identification'' of the kernel.  Usually this should
# be the same as the name of your kernel.
#
ident		LINT

#
# The `maxusers' parameter controls the static sizing of a number of
# internal system tables by a formula defined in subr_param.c.  Setting
# maxusers to 0 will cause the system to auto-size based on physical 
# memory.
#
maxusers	10

#
# The `makeoptions' parameter allows variables to be passed to the
# generated Makefile in the build area.
#
# CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
# after most other flags.  Here we use it to inhibit use of non-optimal
# gcc builtin functions (e.g., memcmp).
#
# DEBUG happens to be magic.
# The following is equivalent to 'config -g KERNELNAME' and creates
# 'kernel.debug' compiled with -g debugging as well as a normal
# 'kernel'.  Use 'make install.debug' to install the debug kernel
# but that isn't normally necessary as the debug symbols are not loaded
# by the kernel and are not useful there anyway.
#
# KERNEL can be overridden so that you can change the default name of your
# kernel.
#
# MODULES_OVERRIDE can be used to limit modules built to a specific list.
#
makeoptions	CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
#makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
#makeoptions	KERNEL=foo		#Build kernel "foo" and install "/foo"
# Only build Linux API modules and plus those parts of the sound system I need.
#makeoptions	MODULES_OVERRIDE="linux sound/snd sound/pcm sound/driver/maestro3"
makeoptions	DESTDIR=/tmp


#
# Certain applications can grow to be larger than the 512M limit
# that FreeBSD initially imposes.  Below are some options to
# allow that limit to grow to 1GB, and can be increased further
# with changing the parameters.  MAXDSIZ is the maximum that the
# limit can be set to, and the DFLDSIZ is the default value for
# the limit.  MAXSSIZ is the maximum that the stack limit can be
# set to.  You might want to set the default lower than the max, 
# and explicitly set the maximum with a shell command for processes
# that regularly exceed the limit like INND.
#
options 	MAXDSIZ=(1024UL*1024*1024)
options 	MAXSSIZ=(128UL*1024*1024)
options 	DFLDSIZ=(1024UL*1024*1024)

#
# BLKDEV_IOSIZE sets the default block size used in user block
# device I/O.  Note that this value will be overriden by the label
# when specifying a block device from a label with a non-0
# partition blocksize.  The default is PAGE_SIZE.
#
options 	BLKDEV_IOSIZE=8192

# Options for the VM subsystem
options 	PQ_CACHESIZE=512	# color for 512k/16k cache
# Deprecated options supported for backwards compatibility
#options 	PQ_NOOPT		# No coloring
#options 	PQ_LARGECACHE		# color for 512k/16k cache
#options 	PQ_HUGECACHE		# color for 1024k/16k cache
#options 	PQ_MEDIUMCACHE		# color for 256k/16k cache
#options 	PQ_NORMALCACHE		# color for 64k/16k cache

# This allows you to actually store this configuration file into
# the kernel binary itself, where it may be later read by saying:
#    strings -n 3 /boot/kernel/kernel | sed -n 's/^___//p' > MYKERNEL
#
options 	INCLUDE_CONFIG_FILE     # Include this file in kernel

options 	GEOM_AES
options 	GEOM_APPLE
options 	GEOM_BDE
options 	GEOM_BSD
options 	GEOM_GPT
options 	GEOM_MBR
options 	GEOM_PC98
options 	GEOM_SUNLABEL
options 	GEOM_VOL

#
# The root device and filesystem type can be compiled in;
# this provides a fallback option if the root device cannot
# be correctly guessed by the bootstrap code, or an override if
# the RB_DFLTROOT flag (-r) is specified when booting the kernel.
#
options 	ROOTDEVNAME=\"ufs:da0s2e\"


#####################################################################
# Scheduler options:
#
# Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
# select which scheduler is compiled in.
#
# SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
# queue and no cpu affinity which makes it suboptimal for SMP.  It has very
# good interactivity and priority selection.
#
# SCHED_ULE is a new experimental scheduler that has been designed for SMP,
# but will work just fine on UP too.  Users of this scheduler should expect
# some hicups and be prepaired to provide feedback.
#
options		SCHED_4BSD
#options	SCHED_ULE

#####################################################################
# SMP OPTIONS:
#
# SMP enables building of a Symmetric MultiProcessor Kernel.

# Mandatory:
options 	SMP			# Symmetric MultiProcessor Kernel

# ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
# if the thread that currently owns the mutex is executing on another
# CPU.
options 	ADAPTIVE_MUTEXES

# SMP Debugging Options:
#
# MUTEX_DEBUG enables various extra assertions in the mutex code.
# WITNESS enables the witness code which detects deadlocks and cycles
#         during locking operations.
# WITNESS_DDB causes the witness code to drop into the kernel debugger if
#	  a lock heirarchy violation occurs or if locks are held when going to
#	  sleep.
# WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
options 	MUTEX_DEBUG
options 	WITNESS
options 	WITNESS_DDB
options 	WITNESS_SKIPSPIN

#
# MUTEX_PROFILING - Profiling mutual exclusion locks (mutexes).  This
# records four numbers for each acquisition point (identified by
# source file name and line number): longest time held, total time held,
# number of non-recursive acquisitions, and average time held. Measurements
# are made and stored in nanoseconds (using nanotime(9)), but are presented
# in microseconds, which should be sufficient for the locks which actually
# want this (those that are held long and / or often).  The MUTEX_PROFILING
# option has the following sysctl namespace for controlling and viewing its
# operation:
#
#  debug.mutex.prof.enable - enable / disable profiling
#  debug.mutex.prof.acquisitions - number of mutex acquisitions held
#  debug.mutex.prof.records - number of acquisition points recorded
#  debug.mutex.prof.maxrecords - max number of acquisition points
#  debug.mutex.prof.rejected - number of rejections (due to full table)
#  debug.mutex.prof.hashsize - hash size
#  debug.mutex.prof.collisions - number of hash collisions
#  debug.mutex.prof.stats - profiling statistics
#
options 	MUTEX_PROFILING


#####################################################################
# COMPATIBILITY OPTIONS                                             

#
# Implement system calls compatible with 4.3BSD and older versions of
# FreeBSD.  You probably do NOT want to remove this as much current code
# still relies on the 4.3 emulation.
#
options 	COMPAT_43

# Enable FreeBSD4 compatibility syscalls
options 	COMPAT_FREEBSD4

#
# These three options provide support for System V Interface
# Definition-style interprocess communication, in the form of shared
# memory, semaphores, and message queues, respectively.
#
options 	SYSVSHM
options 	SYSVSEM
options 	SYSVMSG


#####################################################################
# DEBUGGING OPTIONS

#
# Enable the kernel debugger.
#
options 	DDB

#
# Use direct symbol lookup routines for ddb instead of the kernel linker
# ones, so that symbols (mostly) work before the kernel linker has been
# initialized.  This is not the default because it breaks ddb's lookup of
# symbols in loaded modules.
#
#!options 	DDB_NOKLDSYM

#
# Print a stack trace of the current thread out on the console for a panic.
#
options 	DDB_TRACE

#
# Don't drop into DDB for a panic. Intended for unattended operation
# where you may want to drop to DDB from the console, but still want
# the machine to recover from a panic
#
options 	DDB_UNATTENDED

#
# If using GDB remote mode to debug the kernel, there's a non-standard
# extension to the remote protocol that can be used to use the serial
# port as both the debugging port and the system console.  It's non-
# standard and you're on your own if you enable it.  See also the
# "remotechat" variables in the FreeBSD specific version of gdb.
#
options 	GDB_REMOTE_CHAT

#
# KTRACE enables the system-call tracing facility ktrace(2).  To be more
# SMP-friendly, KTRACE uses a worker thread to process most trace events
# asynchronously to the thread generating the event.  This requires a
# pre-allocated store of objects representing trace events.  The
# KTRACE_REQUEST_POOL option specifies the initial size of this store.
# The size of the pool can be adjusted both at boottime and runtime via
# the kern.ktrace_request_pool tunable and sysctl.
#
options 	KTRACE			#kernel tracing
options 	KTRACE_REQUEST_POOL=101

#
# KTR is a kernel tracing mechanism imported from BSD/OS.  Currently it
# has no userland interface aside from a few sysctl's.  It is enabled with
# the KTR option.  KTR_ENTRIES defines the number of entries in the circular
# trace buffer.  KTR_COMPILE defines the mask of events to compile into the
# kernel as defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
# initial value of the ktr_mask variable which determines at runtime what
# events to trace.  KTR_CPUMASK determines which CPU's log events, with
# bit X corresponding to cpu X.  KTR_VERBOSE enables dumping of KTR events
# to the console by default.  This functionality can be toggled via the
# debug.ktr_verbose sysctl and defaults to off if KTR_VERBOSE is not defined.
#
options 	KTR
options 	KTR_ENTRIES=1024
options 	KTR_COMPILE=(KTR_INTR|KTR_PROC)
options 	KTR_MASK=KTR_INTR
options 	KTR_CPUMASK=0x3
options 	KTR_VERBOSE

#
# The INVARIANTS option is used in a number of source files to enable
# extra sanity checking of internal structures.  This support is not
# enabled by default because of the extra time it would take to check
# for these conditions, which can only occur as a result of
# programming errors.
#
options 	INVARIANTS

#
# The INVARIANT_SUPPORT option makes us compile in support for
# verifying some of the internal structures.  It is a prerequisite for
# 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
# called.  The intent is that you can set 'INVARIANTS' for single
# source files (by changing the source file or specifying it on the
# command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
# wish to build a kernel module with 'INVARIANTS', then adding
# 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
# infrastructure without the added overhead.
#
options 	INVARIANT_SUPPORT

#
# The DIAGNOSTIC option is used to enable extra debugging information
# from some parts of the kernel.  As this makes everything more noisy,
# it is disabled by default.
#
options 	DIAGNOSTIC

#
# REGRESSION causes optional kernel interfaces necessary only for regression
# testing to be enabled.  These interfaces may consitute security risks
# when enabled, as they permit processes to easily modify aspects of the
# run-time environment to reproduce unlikely or unusual (possibly normally
# impossible) scenarios.
#
options 	REGRESSION

#
# RESTARTABLE_PANICS allows one to continue from a panic as if it were
# a call to the debugger via the Debugger() function instead.  It is only
# useful if a kernel debugger is present.  To restart from a panic, reset
# the panicstr variable to NULL and continue execution.  This option is
# for development use only and should NOT be used in production systems
# to "workaround" a panic.
#
#options 	RESTARTABLE_PANICS

#
# This option let some drivers co-exist that can't co-exist in a running
# system.  This is used to be able to compile all kernel code in one go for
# quality assurance purposes (like this file, which the option takes it name
# from.)
#
options 	COMPILING_LINT


#####################################################################
# NETWORKING OPTIONS

#
# Protocol families:
#  Only the INET (Internet) family is officially supported in FreeBSD.
#  Source code for the NS (Xerox Network Service) is provided for amusement
#  value.
#
options 	INET			#Internet communications protocols
options 	INET6			#IPv6 communications protocols
options 	IPSEC			#IP security
options 	IPSEC_ESP		#IP security (crypto; define w/ IPSEC)
options 	IPSEC_DEBUG		#debug for IP security
#
# Set IPSEC_FILTERGIF to force packets coming through a gif tunnel
# to be processed by any configured packet filtering (ipfw, ipf).
# The default is that packets coming from a tunnel are _not_ processed;
# they are assumed trusted.
#
# Note that enabling this can be problematic as there are no mechanisms
# in place for distinguishing packets coming out of a tunnel (e.g. no
# encX devices as found on openbsd).
#
#options 	IPSEC_FILTERGIF		#filter ipsec packets from a tunnel

#options 	FAST_IPSEC		#new IPsec (cannot define w/ IPSEC)

options 	IPX			#IPX/SPX communications protocols
options 	IPXIP			#IPX in IP encapsulation (not available)
options 	IPTUNNEL		#IP in IPX encapsulation (not available)

#options 	NCP			#NetWare Core protocol

options 	NETATALK		#Appletalk communications protocols
options 	NETATALKDEBUG		#Appletalk debugging

# These are currently broken but are shipped due to interest.
#options 	NS			#Xerox NS protocols
#options 	NSIP			#XNS over IP

#
# SMB/CIFS requester
# NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
# options.
# NETSMBCRYPTO enables support for encrypted passwords.
options 	NETSMB			#SMB/CIFS requester
options 	NETSMBCRYPTO		#encrypted password support for SMB

# mchain library. It can be either loaded as KLD or compiled into kernel
options 	LIBMCHAIN

# netgraph(4). Enable the base netgraph code with the NETGRAPH option.
# Individual node types can be enabled with the corresponding option
# listed below; however, this is not strictly necessary as netgraph
# will automatically load the corresponding KLD module if the node type
# is not already compiled into the kernel. Each type below has a
# corresponding man page, e.g., ng_async(8).
options 	NETGRAPH		#netgraph(4) system
options 	NETGRAPH_ASYNC
options 	NETGRAPH_BPF
options 	NETGRAPH_BRIDGE
options 	NETGRAPH_CISCO
options 	NETGRAPH_ECHO
options 	NETGRAPH_ETHER
options 	NETGRAPH_FRAME_RELAY
options 	NETGRAPH_GIF
options 	NETGRAPH_GIF_DEMUX
options 	NETGRAPH_HOLE
options 	NETGRAPH_IFACE
options 	NETGRAPH_IP_INPUT
options 	NETGRAPH_KSOCKET
options 	NETGRAPH_L2TP
options 	NETGRAPH_LMI
# MPPC compression requires proprietary files (not included)
#options 	NETGRAPH_MPPC_COMPRESSION
options 	NETGRAPH_MPPC_ENCRYPTION
options 	NETGRAPH_ONE2MANY
options 	NETGRAPH_PPP
options 	NETGRAPH_PPPOE
options 	NETGRAPH_PPTPGRE
options 	NETGRAPH_RFC1490
options 	NETGRAPH_SOCKET
options 	NETGRAPH_SPLIT
options 	NETGRAPH_TEE
options 	NETGRAPH_TTY
options 	NETGRAPH_UI
options 	NETGRAPH_VJC

device		mn	# Munich32x/Falc54 Nx64kbit/sec cards.
device		lmc	# tulip based LanMedia WAN cards
device		musycc	# LMC/SBE LMC1504 quad T1/E1

#
# Network interfaces:
#  The `loop' device is MANDATORY when networking is enabled.
#  The `ether' device provides generic code to handle
#  Ethernets; it is MANDATORY when an Ethernet device driver is
#  configured or token-ring is enabled.
#  The 'wlan' device provides generic code to support 802.11
#  drivers, including host AP mode; it is MANDATORY for the wi
#  driver and will eventually be required by all 802.11 drivers.
#  The `fddi' device provides generic code to support FDDI.
#  The `arcnet' device provides generic code to support Arcnet.
#  The `sppp' device serves a similar role for certain types
#  of synchronous PPP links (like `cx', `ar').
#  The `sl' device implements the Serial Line IP (SLIP) service.
#  The `ppp' device implements the Point-to-Point Protocol.
#  The `bpf' device enables the Berkeley Packet Filter.  Be
#  aware of the legal and administrative consequences of enabling this
#  option.  The number of devices determines the maximum number of
#  simultaneous BPF clients programs runnable.
#  The `disc' device implements a minimal network interface,
#  which throws away all packets sent and never receives any.  It is
#  included for testing purposes.  This shows up as the `ds' interface.
#  The `tap' device is a pty-like virtual Ethernet interface
#  The `tun' device implements (user-)ppp and nos-tun
#  The `gif' device implements IPv6 over IP4 tunneling,
#  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
#  IPv6 over IPv6 tunneling.
#  The `gre' device implements two types of IP4 over IP4 tunneling:
#  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
#  The XBONEHACK option allows the same pair of addresses to be configured on
#  multiple gif interfaces.
#  The `faith' device captures packets sent to it and diverts them
#  to the IPv4/IPv6 translation daemon.
#  The `stf' device implements 6to4 encapsulation.
#  The `ef' device provides support for multiple ethernet frame types
#  specified via ETHER_* options. See ef(4) for details.
#
# The PPP_BSDCOMP option enables support for compress(1) style entire
# packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
# PPP_FILTER enables code for filtering the ppp data stream and selecting
# events for resetting the demand dial activity timer - requires bpf.
# See pppd(8) for more details.
#
device		ether			#Generic Ethernet
device		vlan			#VLAN support
device		wlan			#802.11 support
device		token			#Generic TokenRing
device		fddi			#Generic FDDI
device		arcnet			#Generic Arcnet
device		sppp			#Generic Synchronous PPP
device		loop			#Network loopback device
device		bpf			#Berkeley packet filter
device		disc			#Discard device (ds0, ds1, etc)
device		tap			#Virtual Ethernet driver
device		tun			#Tunnel driver (ppp(8), nos-tun(8))
device		sl			#Serial Line IP
device		gre			#IP over IP tunneling
device		ppp			#Point-to-point protocol
options 	PPP_BSDCOMP		#PPP BSD-compress support
options 	PPP_DEFLATE		#PPP zlib/deflate/gzip support
options 	PPP_FILTER		#enable bpf filtering (needs bpf)

device		ef			# Multiple ethernet frames support
options 	ETHER_II		# enable Ethernet_II frame
options 	ETHER_8023		# enable Ethernet_802.3 (Novell) frame
options 	ETHER_8022		# enable Ethernet_802.2 frame
options 	ETHER_SNAP		# enable Ethernet_802.2/SNAP frame

# for IPv6
device		gif			#IPv6 and IPv4 tunneling
options 	XBONEHACK
device		faith			#for IPv6 and IPv4 translation
device		stf			#6to4 IPv6 over IPv4 encapsulation

#
# Internet family options:
#
# MROUTING enables the kernel multicast packet forwarder, which works
# with mrouted(8).
#
# IPFIREWALL enables support for IP firewall construction, in
# conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
# logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
# limits the number of times a matching entry can be logged.
#
# WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
# and if you do not add other rules during startup to allow access,
# YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
# in /etc/rc.conf when first enabling this feature, then refining the
# firewall rules in /etc/rc.firewall after you've tested that the new kernel
# feature works properly.
#
# IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
# allow everything.  Use with care, if a cracker can crash your
# firewall machine, they can get to your protected machines.  However,
# if you are using it as an as-needed filter for specific problems as
# they arise, then this may be for you.  Changing the default to 'allow'
# means that you won't get stuck if the kernel and /sbin/ipfw binary get
# out of sync.
#
# IPDIVERT enables the divert IP sockets, used by ``ipfw divert''
#
# IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
# packets without touching the ttl).  This can be useful to hide firewalls
# from traceroute and similar tools.
#
# PFIL_HOOKS enables an abtraction layer which is meant to be used in
# network code where filtering is required.  See the pfil(9) man page.
# This option is a subset of the IPFILTER option.
#
# TCPDEBUG enables code which keeps traces of the TCP state machine
# for sockets with the SO_DEBUG option set, which can then be examined
# using the trpt(8) utility.
#
options 	MROUTING		# Multicast routing
options 	IPFIREWALL		#firewall
options 	IPFIREWALL_VERBOSE	#enable logging to syslogd(8)
options 	IPFIREWALL_FORWARD	#enable transparent proxy support
options 	IPFIREWALL_VERBOSE_LIMIT=100	#limit verbosity
options 	IPFIREWALL_DEFAULT_TO_ACCEPT	#allow everything by default
options 	IPV6FIREWALL		#firewall for IPv6
options 	IPV6FIREWALL_VERBOSE
options 	IPV6FIREWALL_VERBOSE_LIMIT=100
options 	IPV6FIREWALL_DEFAULT_TO_ACCEPT
options 	IPDIVERT		#divert sockets
options 	IPFILTER		#ipfilter support
options 	IPFILTER_LOG		#ipfilter logging
options 	IPFILTER_DEFAULT_BLOCK	#block all packets by default
options 	IPSTEALTH		#support for stealth forwarding
options 	PFIL_HOOKS
options 	TCPDEBUG

# RANDOM_IP_ID causes the ID field in IP packets to be randomized
# instead of incremented by 1 with each packet generated.  This
# option closes a minor information leak which allows remote
# observers to determine the rate of packet generation on the
# machine by watching the counter.
options 	RANDOM_IP_ID

# Statically Link in accept filters
options 	ACCEPT_FILTER_DATA
options 	ACCEPT_FILTER_HTTP

# TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
# prevents nmap et al. from identifying the TCP/IP stack, but breaks support
# for RFC1644 extensions and is not recommended for web servers.
#
options 	TCP_DROP_SYNFIN		#drop TCP packets with SYN+FIN

# DUMMYNET enables the "dummynet" bandwidth limiter. You need
# IPFIREWALL as well. See the dummynet(4) and ipfw(8) manpages for more info.
# When you run DUMMYNET it is advisable to also have "options HZ=1000"
# to achieve a smoother scheduling of the traffic.
#
# BRIDGE enables bridging between ethernet cards -- see bridge(4).
# You can use IPFIREWALL and DUMMYNET together with bridging.
#
options 	DUMMYNET
options 	BRIDGE

# Zero copy sockets support.  This enables "zero copy" for sending and
# receving data via a socket.  The send side works for any type of NIC,
# the receive side only works for NICs that support MTUs greater than the
# page size of your architecture and that support header splitting.  See
# zero_copy(9) for more details.
options 	ZERO_COPY_SOCKETS

#
# ATM (HARP version) options
#
# ATM_CORE includes the base ATM functionality code.  This must be included
#	for ATM support.
#
# ATM_IP includes support for running IP over ATM.
#
# At least one (and usually only one) of the following signalling managers
# must be included (note that all signalling managers include PVC support):
# ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
# ATM_SPANS includes support for the `spans' signalling manager, which runs
#	the FORE Systems's proprietary SPANS signalling protocol.
# ATM_UNI includes support for the `uni30' and `uni31' signalling managers,
#	which run the ATM Forum UNI 3.x signalling protocols.
#
# The `hea' driver provides support for the Efficient Networks, Inc.
# ENI-155p ATM PCI Adapter.
#
# The `hfa' driver provides support for the FORE Systems, Inc.
# PCA-200E ATM PCI Adapter.
#
options 	ATM_CORE		#core ATM protocol family
options 	ATM_IP			#IP over ATM support
options 	ATM_SIGPVC		#SIGPVC signalling manager
options 	ATM_SPANS		#SPANS signalling manager
options 	ATM_UNI			#UNI signalling manager

device		hea			#Efficient ENI-155p ATM PCI
device		hfa			#FORE PCA-200E ATM PCI


#####################################################################
# FILESYSTEM OPTIONS

#
# Only the root, /usr, and /tmp filesystems need be statically
# compiled; everything else will be automatically loaded at mount
# time.  (Exception: the UFS family--- FFS --- cannot
# currently be demand-loaded.)  Some people still prefer to statically
# compile other filesystems as well.
#
# NB: The NULL, PORTAL, UMAP and UNION filesystems are known to be
# buggy, and WILL panic your system if you attempt to do anything with
# them.  They are included here as an incentive for some enterprising
# soul to sit down and fix them.
#

# One of these is mandatory:
options 	FFS			#Fast filesystem
options 	NFSCLIENT		#Network File System
options 	NFSSERVER		#Network File System

# The rest are optional:
options 	CD9660			#ISO 9660 filesystem
options 	FDESCFS			#File descriptor filesystem
options 	HPFS			#OS/2 File system
options 	MSDOSFS			#MS DOS File System (FAT, FAT32)
options 	NTFS			#NT File System
options 	NULLFS			#NULL filesystem
#options 	NWFS			#NetWare filesystem
options 	PORTALFS		#Portal filesystem
options 	PROCFS			#Process filesystem (requires PSEUDOFS)
options 	PSEUDOFS		#Pseudo-filesystem framework
options 	SMBFS			#SMB/CIFS filesystem
options 	UDF			#Universal Disk Format
options 	UMAPFS			#UID map filesystem
options 	UNIONFS			#Union filesystem
# The xFS_ROOT options REQUIRE the associated ``options xFS''
options 	NFS_ROOT		#NFS usable as root device

# Soft updates is a technique for improving filesystem speed and
# making abrupt shutdown less risky.
#
options 	SOFTUPDATES

# Extended attributes allow additional data to be associated with files,
# and is used for ACLs, Capabilities, and MAC labels.
# See src/sys/ufs/ufs/README.extattr for more information.
options 	UFS_EXTATTR
options 	UFS_EXTATTR_AUTOSTART

# Access Control List support for UFS filesystems.  The current ACL
# implementation requires extended attribute support, UFS_EXTATTR,
# for the underlying filesystem.
# See src/sys/ufs/ufs/README.acls for more information.
options 	UFS_ACL

# Directory hashing improves the speed of operations on very large
# directories at the expense of some memory.
options 	UFS_DIRHASH

# Make space in the kernel for a root filesystem on a md device.
# Define to the number of kilobytes to reserve for the filesystem.
options 	MD_ROOT_SIZE=10

# Make the md device a potential root device, either with preloaded
# images of type mfs_root or md_root.
options 	MD_ROOT

# Allow this many swap-devices.
#
# In order to manage swap, the system must reserve bitmap space that
# scales with the largest mounted swap device multiplied by NSWAPDEV, 
# irregardless of whether other swap devices exist or not.  So it
# is not a good idea to make this value too large.
options 	NSWAPDEV=5

# Disk quotas are supported when this option is enabled.
options 	QUOTA			#enable disk quotas

# If you are running a machine just as a fileserver for PC and MAC
# users, using SAMBA or Netatalk, you may consider setting this option
# and keeping all those users' directories on a filesystem that is
# mounted with the suiddir option. This gives new files the same
# ownership as the directory (similar to group). It's a security hole
# if you let these users run programs, so confine it to file-servers
# (but it'll save you lots of headaches in those cases). Root owned
# directories are exempt and X bits are cleared. The suid bit must be
# set on the directory as well; see chmod(1) PC owners can't see/set
# ownerships so they keep getting their toes trodden on. This saves
# you all the support calls as the filesystem it's used on will act as
# they expect: "It's my dir so it must be my file".
#
options 	SUIDDIR

# NFS options:
options 	NFS_MINATTRTIMO=3	# VREG attrib cache timeout in sec
options 	NFS_MAXATTRTIMO=60
options 	NFS_MINDIRATTRTIMO=30	# VDIR attrib cache timeout in sec
options 	NFS_MAXDIRATTRTIMO=60
options 	NFS_GATHERDELAY=10	# Default write gather delay (msec)
options 	NFS_WDELAYHASHSIZ=16	# and with this
options 	NFS_DEBUG		# Enable NFS Debugging

# Coda stuff:
options 	CODA			#CODA filesystem.
device		vcoda	4		#coda minicache <-> venus comm.

#
# Add support for the EXT2FS filesystem of Linux fame.  Be a bit
# careful with this - the ext2fs code has a tendency to lag behind
# changes and not be exercised very much, so mounting read/write could
# be dangerous (and even mounting read only could result in panics.)
#
options 	EXT2FS

# Use real implementations of the aio_* system calls.  There are numerous
# stability and security issues in the current aio code that make it
# unsuitable for inclusion on machines with untrusted local users.
options 	VFS_AIO

# Enable the code UFS IO optimization through the VM system.  This allows
# use VM operations instead of copying operations when possible.
# 
# Even with this enabled, actual use of the code is still controlled by the
# sysctl vfs.ioopt.  0 gives no optimization, 1 gives normal (use VM
# operations if a request happens to fit), 2 gives agressive optimization
# (the operations are split to do as much as possible through the VM system.)
#
# Enabling this will probably not give an overall speedup except for
# special workloads.
#
# WARNING: Do not enable this, it is known to be broken, and will result
# in system instability, as well as possible data loss.
options 	ENABLE_VFS_IOOPT

# Cryptographically secure random number generator; /dev/[u]random
device		random


#####################################################################
# POSIX P1003.1B

# Real time extensions added in the 1993 Posix
# _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING

options 	_KPOSIX_PRIORITY_SCHEDULING
# p1003_1b_semaphores are very experimental,
# user should be ready to assist in debugging if problems arise.
options		P1003_1B_SEMAPHORES


#####################################################################
# SECURITY POLICY PARAMETERS

# Support for Mandatory Access Control (MAC):
options 	MAC
options 	MAC_BIBA
options 	MAC_BSDEXTENDED
options 	MAC_DEBUG
options 	MAC_IFOFF
options 	MAC_LOMAC
options 	MAC_MLS
options 	MAC_NONE
options 	MAC_PARTITION
options 	MAC_SEEOTHERUIDS
options 	MAC_TEST


#####################################################################
# CLOCK OPTIONS

# The granularity of operation is controlled by the kernel option HZ whose
# default value (100) means a granularity of 10ms (1s/HZ).
# Some subsystems, such as DUMMYNET, might benefit from a smaller
# granularity such as 1ms or less, for a smoother scheduling of packets.
# Consider, however, that reducing the granularity too much might
# cause excessive overhead in clock interrupt processing,
# potentially causing ticks to be missed and thus actually reducing
# the accuracy of operation.

options 	HZ=100

# If you see the "calcru: negative time of %ld usec for pid %d (%s)\n"
# message you probably have some broken sw/hw which disables interrupts
# for too long.  You can make the system more resistant to this by
# choosing a high value for NTIMECOUNTER.  The default is 5, there
# is no upper limit but more than a couple of hundred are not productive.

options 	NTIMECOUNTER=20

# Enable support for the kernel PLL to use an external PPS signal,
# under supervision of [x]ntpd(8)
# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp

options 	PPS_SYNC


#####################################################################
# SCSI DEVICES

# SCSI DEVICE CONFIGURATION

# The SCSI subsystem consists of the `base' SCSI code, a number of
# high-level SCSI device `type' drivers, and the low-level host-adapter
# device drivers.  The host adapters are listed in the ISA and PCI
# device configuration sections below.
#
# Beginning with FreeBSD 2.0.5 you can wire down your SCSI devices so
# that a given bus, target, and LUN always come on line as the same
# device unit.  In earlier versions the unit numbers were assigned
# in the order that the devices were probed on the SCSI bus.  This
# means that if you removed a disk drive, you may have had to rewrite
# your /etc/fstab file, and also that you had to be careful when adding
# a new disk as it may have been probed earlier and moved your device
# configuration around.

# This old behavior is maintained as the default behavior.  The unit
# assignment begins with the first non-wired down unit for a device
# type.  For example, if you wire a disk as "da3" then the first
# non-wired disk will be assigned da4.

# The syntax for wiring down devices is:

hint.scbus.0.at="ahc0"
hint.scbus.1.at="ahc1"
hint.scbus.1.bus="0"
hint.scbus.3.at="ahc2"
hint.scbus.3.bus="0"
hint.scbus.2.at="ahc2"
hint.scbus.2.bus="1"
hint.da.0.at="scbus0"
hint.da.0.target="0"
hint.da.0.unit="0"
hint.da.1.at="scbus3"
hint.da.1.target="1"
hint.da.2.at="scbus2"
hint.da.2.target="3"
hint.sa.1.at="scbus1"
hint.sa.1.target="6"

# "units" (SCSI logical unit number) that are not specified are
# treated as if specified as LUN 0.

# All SCSI devices allocate as many units as are required.

# The ch driver drives SCSI Media Changer ("jukebox") devices.
#
# The da driver drives SCSI Direct Access ("disk") and Optical Media
# ("WORM") devices.
#
# The sa driver drives SCSI Sequential Access ("tape") devices.
#
# The cd driver drives SCSI Read Only Direct Access ("cd") devices.
#
# The ses driver drives SCSI Envinronment Services ("ses") and
# SAF-TE ("SCSI Accessable Fault-Tolerant Enclosure") devices.
#
# The pt driver drives SCSI Processor devices.
#
# 
# Target Mode support is provided here but also requires that a SIM
# (SCSI Host Adapter Driver) provide support as well.
#
# The targ driver provides target mode support as a Processor type device.
# It exists to give the minimal context necessary to respond to Inquiry
# commands. There is a sample user application that shows how the rest
# of the command support might be done in /usr/share/examples/scsi_target.
#
# The targbh driver provides target mode support and exists to respond
# to incoming commands that do not otherwise have a logical unit assigned
# to them.
# 
# The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
# configuration as the "pass" driver.

device		scbus		#base SCSI code
device		ch		#SCSI media changers
device		da		#SCSI direct access devices (aka disks)
device		sa		#SCSI tapes
device		cd		#SCSI CD-ROMs
device		ses		#SCSI Environmental Services (and SAF-TE)
device		pt		#SCSI processor 
device		targ		#SCSI Target Mode Code
device		targbh		#SCSI Target Mode Blackhole Device
device		pass		#CAM passthrough driver

# CAM OPTIONS:
# debugging options:
# -- NOTE --  If you specify one of the bus/target/lun options, you must
#             specify them all!
# CAMDEBUG: When defined enables debugging macros
# CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
# CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
# CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
# CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
#                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
#
# CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
# CAM_NEW_TRAN_CODE: this is the new transport layer code that will be switched
#			to soon
# SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
# SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
# SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
#             queue after a bus reset, and the number of milliseconds to
#             freeze the device queue after a bus device reset.  This
#             can be changed at boot and runtime with the
#             kern.cam.scsi_delay tunable/sysctl.
options 	CAMDEBUG
options 	CAM_DEBUG_BUS=-1
options 	CAM_DEBUG_TARGET=-1
options 	CAM_DEBUG_LUN=-1
options 	CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
options 	CAM_MAX_HIGHPOWER=4
options 	SCSI_NO_SENSE_STRINGS
options 	SCSI_NO_OP_STRINGS
options 	SCSI_DELAY=8000	# Be pessimistic about Joe SCSI device

# Options for the CAM CDROM driver:
# CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
# CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
#                           enforced if there is I/O waiting for another LUN
# The compiled in defaults for these variables are 2 and 10 seconds,
# respectively.
#
# These can also be changed on the fly with the following sysctl variables:
# kern.cam.cd.changer.min_busy_seconds
# kern.cam.cd.changer.max_busy_seconds
#
options 	CHANGER_MIN_BUSY_SECONDS=2
options 	CHANGER_MAX_BUSY_SECONDS=10

# Options for the CAM sequential access driver:
# SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
# SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
# SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
# SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
# SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
options 	SA_IO_TIMEOUT=4
options 	SA_SPACE_TIMEOUT=60
options 	SA_REWIND_TIMEOUT=(2*60)
options 	SA_ERASE_TIMEOUT=(4*60)
options 	SA_1FM_AT_EOD

# Optional timeout for the CAM processor target (pt) device
# This is specified in seconds.  The default is 60 seconds.
options 	SCSI_PT_DEFAULT_TIMEOUT=60

# Optional enable of doing SES passthrough on other devices (e.g., disks)
#
# Normally disabled because a lot of newer SCSI disks report themselves
# as having SES capabilities, but this can then clot up attempts to build
# build a topology with the SES device that's on the box these drives
# are in....
options 	SES_ENABLE_PASSTHROUGH


#####################################################################
# MISCELLANEOUS DEVICES AND OPTIONS

# The `pty' device usually turns out to be ``effectively mandatory'',
# as it is required for `telnetd', `rlogind', `screen', `emacs', and
# `xterm', among others.

device		pty		#Pseudo ttys
device		nmdm		#back-to-back tty devices
device		md		#Memory/malloc disk
device		snp		#Snoop device - to look at pty/vty/etc..
device		ccd		#Concatenated disk driver

# Configuring Vinum into the kernel is not necessary, since the kld
# module gets started automatically when vinum(8) starts.  This
# device is also untested.  Use at your own risk.
#
# The option VINUMDEBUG must match the value set in CFLAGS
# in src/sbin/vinum/Makefile.  Failure to do so will result in
# the following message from vinum(8):
#
# Can't get vinum config: Invalid argument
#
# see vinum(4) for more reasons not to use these options.
device		vinum		#Vinum concat/mirror/raid driver
options 	VINUMDEBUG	#enable Vinum debugging hooks

# RAIDframe device.  RAID_AUTOCONFIG allows RAIDframe to search all of the
# disk devices in the system looking for components that it recognizes (already
# configured once before) and auto-configured them into arrays.
device		raidframe
options		RAID_AUTOCONFIG

# Kernel side iconv library
options 	LIBICONV

# Size of the kernel message buffer.  Should be N * pagesize.
options 	MSGBUF_SIZE=40960


#####################################################################
# HARDWARE DEVICE CONFIGURATION

# For ISA the required hints are listed.
# EISA, MCA, PCI and pccard are self identifying buses, so no hints
# are needed.

#
# Mandatory devices:
#

options 	FB_DEBUG		# Frame buffer debugging

device		splash			# Splash screen and screen saver support

# Various screen savers.
device		blank_saver
device		daemon_saver
device		fade_saver
device		fire_saver
device		green_saver
device		logo_saver
device		rain_saver
device		star_saver
device		warp_saver

# The syscons console driver (sco color console compatible).
device		sc
hint.sc.0.at="isa"
options 	MAXCONS=16		# number of virtual consoles
options 	SC_ALT_MOUSE_IMAGE	# simplified mouse cursor in text mode
options 	SC_DFLT_FONT		# compile font in
makeoptions	SC_DFLT_FONT=cp850
options 	SC_DISABLE_DDBKEY	# disable `debug' key
options 	SC_DISABLE_REBOOT	# disable reboot key sequence
options 	SC_HISTORY_SIZE=200	# number of history buffer lines
options 	SC_MOUSE_CHAR=0x3	# char code for text mode mouse cursor
options 	SC_PIXEL_MODE		# add support for the raster text mode

# The following options will let you change the default colors of syscons.
options 	SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
options 	SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
options 	SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
options 	SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)

# The following options will let you change the default behaviour of
# cut-n-paste feature
options 	SC_CUT_SPACES2TABS	# convert leading spaces into tabs
options 	SC_CUT_SEPCHARS=\"x09\"	# set of characters that delimit words
					# (default is single space - \"x20\")

# If you have a two button mouse, you may want to add the following option
# to use the right button of the mouse to paste text.
options 	SC_TWOBUTTON_MOUSE

# You can selectively disable features in syscons.
options 	SC_NO_CUTPASTE
options 	SC_NO_FONT_LOADING
options 	SC_NO_HISTORY
options 	SC_NO_SYSMOUSE
options 	SC_NO_SUSPEND_VTYSWITCH

# `flags' for sc
#	0x80	Put the video card in the VESA 800x600 dots, 16 color mode
#	0x100	Probe for a keyboard device periodically if one is not present

#
# Optional devices:
#

#
# SCSI host adapters:
#
# adv: All Narrow SCSI bus AdvanSys controllers.
# adw: Second Generation AdvanSys controllers including the ADV940UW.
# ahb: Adaptec 174x EISA controllers
# ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
#      19160x/29160x, aic7770/aic78xx
# ahd: Adaptec 29320/39320 Controllers.
# aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
# amd: Support for the AMD 53C974 SCSI host adapter chip as found on devices
#      such as the Tekram DC-390(T).
# isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
#      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
#      ISP 12160 Ultra3 SCSI,
#      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
#      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
# ispfw: Firmware module for Qlogic host adapters
# mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
#      or FC9x9 Fibre Channel host adapters.
# ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
# sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
#      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875, 
#      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D, 
#      53C1010-33, 53C1010-66.
# trm: Tekram DC395U/UW/F DC315U adapters.

device		adv
hint.adv.0.at="isa"
device		adw
device		aic
hint.aic.0.at="isa"
device		ahb
device		ahc
device		ahd
device		amd
device		isp
hint.isp.0.disable="1"
hint.isp.0.role="3"
hint.isp.0.prefer_iomap="1"
hint.isp.0.prefer_memmap="1"
hint.isp.0.fwload_disable="1"
hint.isp.0.ignore_nvram="1"
hint.isp.0.fullduplex="1"
hint.isp.0.topology="lport"
hint.isp.0.topology="nport"
hint.isp.0.topology="lport-only"
hint.isp.0.topology="nport-only"
# we can't get u_int64_t types, nor can we get strings if it's got
# a leading 0x, hence this silly dodge.
hint.isp.0.portwnn="w50000000aaaa0000"
hint.isp.0.nodewnn="w50000000aaaa0001"
device		ispfw
device		mpt
device		ncr
device		sym
device		trm

# The aic7xxx driver will attempt to use memory mapped I/O for all PCI
# controllers that have it configured only if this option is set. Unfortunately,
# this doesn't work on some motherboards, which prevents it from being the
# default.
options 	AHC_ALLOW_MEMIO

# Dump the contents of the ahc controller configuration PROM.
options 	AHC_DUMP_EEPROM

# Bitmap of units to enable targetmode operations.
options 	AHC_TMODE_ENABLE

# Compile in aic79xx debugging code.
options 	AHD_DEBUG

# Aic79xx driver debugging options.   
# See the ahd(4) manpage
options 	AHD_DEBUG_OPTS=0xFFFFFFFF

# Print human-readable register definitions when debugging
options 	AHD_REG_PRETTY_PRINT

# The adw driver will attempt to use memory mapped I/O for all PCI
# controllers that have it configured only if this option is set.
options 	ADW_ALLOW_MEMIO

# Options used in dev/isp/ (Qlogic SCSI/FC driver).
#
#	ISP_TARGET_MODE		-	enable target mode operation
#
options 	ISP_TARGET_MODE=1

# Options used in dev/sym/ (Symbios SCSI driver).
#options 	SYM_SETUP_LP_PROBE_MAP	#-Low Priority Probe Map (bits)
					# Allows the ncr to take precedence
					# 1 (1<<0) -> 810a, 860
					# 2 (1<<1) -> 825a, 875, 885, 895
					# 4 (1<<2) -> 895a, 896, 1510d 
#options 	SYM_SETUP_SCSI_DIFF	#-HVD support for 825a, 875, 885
					# disabled:0 (default), enabled:1
#options 	SYM_SETUP_PCI_PARITY	#-PCI parity checking
					# disabled:0, enabled:1 (default)
#options 	SYM_SETUP_MAX_LUN	#-Number of LUNs supported
					# default:8, range:[1..64]

#
# The 'ATA' driver supports all ATA and ATAPI devices, including PC Card
# devices. You only need one "device ata" for it to find all
# PCI and PC Card ATA/ATAPI devices on modern machines.
device		ata
device		atadisk		# ATA disk drives
device		atapicd		# ATAPI CDROM drives
device		atapifd		# ATAPI floppy drives
device		atapist		# ATAPI tape drives
device		atapicam	# emulate ATAPI devices as SCSI ditto via CAM
				# needs CAM to be present (scbus & pass)
#
# For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
hint.ata.0.at="isa"
hint.ata.0.port="0x1f0"
hint.ata.0.irq="14"
hint.ata.1.at="isa"
hint.ata.1.port="0x170"
hint.ata.1.irq="15"

#
# The following options are valid on the ATA driver:
#
# ATA_STATIC_ID:	controller numbering is static ie depends on location
#			else the device numbers are dynamically allocated.

options 	ATA_STATIC_ID

#
# Standard floppy disk controllers and floppy tapes, supports
# the Y-E DATA External FDD (PC Card)
#
device		fdc
hint.fdc.0.at="isa"
hint.fdc.0.port="0x3F0"
hint.fdc.0.irq="6"
hint.fdc.0.drq="2"
#
# FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
# gotta turn it actually on by setting the variable fd_debug with DDB,
# however.
options 	FDC_DEBUG
#
# Activate this line if you happen to have an Insight floppy tape.
# Probing them proved to be dangerous for people with floppy disks only,
# so it's "hidden" behind a flag:
#hint.fdc.0.flags="1"

# Specify floppy devices
hint.fd.0.at="fdc0"
hint.fd.0.drive="0"
hint.fd.1.at="fdc0"
hint.fd.1.drive="1"

#
# sio: serial ports (see sio(4)), including support for various
#      PC Card devices, such as Modem and NICs (see etc/defaults/pccard.conf)

device		sio
hint.sio.0.at="isa"
hint.sio.0.port="0x3F8"
hint.sio.0.flags="0x10"
hint.sio.0.irq="4"

#
# `flags' for serial drivers that support consoles (only for sio now):
#	0x10	enable console support for this unit.  The other console flags
#		are ignored unless this is set.  Enabling console support does
#		not make the unit the preferred console - boot with -h or set
#		the 0x20 flag for that.  Currently, at most one unit can have
#		console support; the first one (in config file order) with
#		this flag set is preferred.  Setting this flag for sio0 gives
#		the old behaviour.
#	0x20	force this unit to be the console (unless there is another
#		higher priority console).  This replaces the COMCONSOLE option.
#	0x40	reserve this unit for low level console operations.  Do not
#		access the device in any normal way.
#	0x80	use this port for serial line gdb support in ddb.
#
# PnP `flags'
#	0x1	disable probing of this device.  Used to prevent your modem
#		from being attached as a PnP modem.
#

# Options for serial drivers that support consoles (only for sio now):
options 	BREAK_TO_DEBUGGER	#a BREAK on a comconsole goes to
					#DDB, if available.
options 	CONSPEED=115200		# speed for serial console
					# (default 9600)

# Solaris implements a new BREAK which is initiated by a character
# sequence CR ~ ^b which is similar to a familiar pattern used on
# Sun servers by the Remote Console.
options 	ALT_BREAK_TO_DEBUGGER

# Options for sio:
options 	COM_ESP			#code for Hayes ESP
options 	COM_MULTIPORT		#code for some cards with shared IRQs

# Other flags for sio that aren't documented in the man page.
#	0x20000	enable hardware RTS/CTS and larger FIFOs.  Only works for
#		ST16650A-compatible UARTs.

# PCI Universal Communications driver
# Supports various single and multi port PCI serial cards. Maybe later
# also the parallel ports on combination serial/parallel cards. New cards
# can be added in src/sys/dev/puc/pucdata.c.
#
# If the PUC_FASTINTR option is used the driver will try to use fast
# interrupts. The card must then be the only user of that interrupt.
# Interrupts cannot be shared when using PUC_FASTINTR.
device		puc
options 	PUC_FASTINTR

#
# Network interfaces:
#
# MII bus support is required for some PCI 10/100 ethernet NICs,
# namely those which use MII-compliant transceivers or implement
# tranceiver control interfaces that operate like an MII. Adding
# "device miibus0" to the kernel config pulls in support for
# the generic miibus API and all of the PHY drivers, including a
# generic one for PHYs that aren't specifically handled by an
# individual driver.
device		miibus

# an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
#       PCI and ISA varieties.
# awi:  Support for IEEE 802.11 PC Card devices using the AMD Am79C930 and
#       Harris (Intersil) Chipset with PCnetMobile firmware by AMD.
# bge:	Support for gigabit ethernet adapters based on the Broadcom
#	BCM570x family of controllers, including the 3Com 3c996-T,
#	the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
#	the embedded gigE NICs on Dell PowerEdge 2550 servers.
# cm:	Arcnet SMC COM90c26 / SMC COM90c56
#	(and SMC COM90c66 in '56 compatibility mode) adapters.
# cnw:  Xircom CNW/Netware Airsurfer PC Card adapter
# cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters
# dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
#       and various workalikes including:
#       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
#       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
#       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
#       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
#       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
#       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110, 
#       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX, 
#       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
#       KNE110TX.
# de:   Digital Equipment DC21040
# em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
# ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
#       and PC Card devices using these chipsets.
# ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
#       Olicom Ethernet PC Card devices.
# fe:   Fujitsu MB86960A/MB86965A Ethernet
# fea:  DEC DEFEA EISA FDDI adapter
# fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
# fxp:  Intel EtherExpress Pro/100B
#	(hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
# gx:   Intel Pro/1000 Gigabit Ethernet (82542, 82543-F, 82543-T)
# lge:	Support for PCI gigabit ethernet adapters based on the Level 1
#	LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
#	SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
# my:	Myson Fast Ethernet (MTD80X, MTD89X)
# nge:	Support for PCI gigabit ethernet adapters based on the National
#	Semiconductor DP83820 and DP83821 chipset. This includes the
#	SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
#	GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the LinkSys
#	EG1032 and EG1064, the Surecom EP-320G-TX and the Netgear GA622T.
# pcn:	Support for PCI fast ethernet adapters based on the AMD Am79c97x
#	chipsets, including the PCnet/FAST, PCnet/FAST+, PCnet/PRO and
#	PCnet/Home. These were previously handled by the lnc driver (and
#	still will be if you leave this driver out of the kernel).
# rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
#       chipset.  Note that the RealTek driver defaults to using programmed
#       I/O to do register accesses because memory mapped mode seems to cause
#       severe lockups on SMP hardware.  This driver also supports the
#       Accton EN1207D `Cheetah' adapter, which uses a chip called
#       the MPX 5030/5038, which is either a RealTek in disguise or a
#       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
#       chipset and is supported by this driver, not the 'vr' driver.
# sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
#       Adaptec AIC-6915 "starfire" controller.
#       This includes dual and quad port cards, as well as one 100baseFX card.
#       Most of these are 64-bit PCI devices, except for one single port
#       card which is 32-bit.
# sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
#       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
# sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
#       This includes the SK-9841 and SK-9842 single port cards (single mode
#       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
#       (also single mode and multimode).
#       The driver will autodetect the number of ports on the card and
#       attach each one as a separate network interface.
# sn:   Support for ISA and PC Card Ethernet devices using the
#       SMC91C90/92/94/95 chips.
# ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
#       the D-Link DFE-550TX.
# ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
#       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
#       3Com 3c985, the Netgear GA620 and various others.  Note that you will
#       probably want to bump up NMBCLUSTERS a lot to use this driver.
# tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
#       cards and integrated ethernet controllers.  This includes several
#       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
#       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
#       supports several Olicom 10Mbps and 10/100 boards.
# tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II serie)
# txp:	Support for 3Com 3cR990 cards with the "Typhoon" chipset
# vr:   Support for various fast ethernet adapters based on the VIA
#       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
#       including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking 
#       Technologies PN102TX, and the AOpen/Acer ALN-320.
# vx:   3Com 3C590 and 3C595
# wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
#       Note: this is not the same as the Winbond W89C940F, which is a
#       NE2000 clone.
# wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
#       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
#       bridge with a PCMCIA adapter plugged into it.
# xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
#       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
#       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
# xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
#       Etherlink XL cards and integrated controllers.  This includes the
#       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
#       Precision desktop machines and the integrated 3c905-TX chips
#       in Dell Latitude laptop docking stations.
#       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX

# Order for ISA/EISA devices is important here

device		cm
hint.cm.0.at="isa"
hint.cm.0.port="0x2e0"
hint.cm.0.irq="9"
hint.cm.0.maddr="0xdc000"
device		cs
hint.cs.0.at="isa"
hint.cs.0.port="0x300"
device		ep
device		ex
device		fe
hint.fe.0.at="isa"
hint.fe.0.port="0x300"
device		fea
device		sn
hint.sn.0.at="isa"
hint.sn.0.port="0x300"
hint.sn.0.irq="10"
device		an
device		awi
device		cnw
device		wi
device		xe

# PCI Ethernet NICs that use the common MII bus controller code.
device		dc		# DEC/Intel 21143 and various workalikes
device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
hint.fxp.0.prefer_iomap="0"
device		my		# Myson Fast Ethernet (MTD80X, MTD89X)
device		rl		# RealTek 8129/8139
device		pcn		# AMD Am79C97x PCI 10/100 NICs
device		sf		# Adaptec AIC-6915 (``Starfire'')
device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
device		ste		# Sundance ST201 (D-Link DFE-550TX)
device		tl		# Texas Instruments ThunderLAN
device		tx		# SMC EtherPower II (83c170 ``EPIC'')
device		vr		# VIA Rhine, Rhine II
device		wb		# Winbond W89C840F
device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')

# PCI Ethernet NICs.
device		de		# DEC/Intel DC21x4x (``Tulip'')
device		txp		# 3Com 3cR990 (``Typhoon'')
device		vx		# 3Com 3c590, 3c595 (``Vortex'')

# PCI Gigabit & FDDI NICs.
device		bge
device		gx
device		lge
device		nge
device		sk
device		ti
device		fpa

# Use "private" jumbo buffers allocated exclusively for the ti(4) driver.
# This option is incompatible with the TI_JUMBO_HDRSPLIT option below.
#options 	TI_PRIVATE_JUMBOS
# Turn on the header splitting option for the ti(4) driver firmware.  This
# only works for Tigon II chips, and has no effect for Tigon I chips.
options 	TI_JUMBO_HDRSPLIT

# These two options allow manipulating the mbuf cluster size and mbuf size,
# respectively.  Be very careful with NIC driver modules when changing
# these from their default values, because that can potentially cause a
# mismatch between the mbuf size assumed by the kernel and the mbuf size
# assumed by a module.  The only driver that currently has the ability to
# detect a mismatch is ti(4).
options 	MCLSHIFT=12	# mbuf cluster shift in bits, 12 == 4KB
options 	MSIZE=512	# mbuf size in bytes

#
# ATM related options (Cranor version)
# (note: this driver cannot be used with the HARP ATM stack)
#
# The `en' device provides support for Efficient Networks (ENI)
# ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
#
# atm device provides generic atm functions and is required for
# atm devices.
# NATM enables the netnatm protocol family that can be used to
# bypass TCP/IP.
#
# the current driver supports only PVC operations (no atm-arp, no multicast).
# for more details, please read the original documents at
# http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
#
device		atm
device		en
options 	NATM			#native ATM

#
# Audio drivers: `pcm', `sbc', `gusc'
#
# pcm: PCM audio through various sound cards.
#
# This has support for a large number of new audio cards, based on
# CS423x, OPTi931, Yamaha OPL-SAx, and also for SB16, GusPnP.
# For more information about this driver and supported cards,
# see the pcm.4 man page.
#
# The flags of the device tells the device a bit more info about the
# device that normally is obtained through the PnP interface.
#	bit  2..0   secondary DMA channel;
#	bit  4      set if the board uses two dma channels;
#	bit 15..8   board type, overrides autodetection; leave it
#		    zero if don't know what to put in (and you don't,
#		    since this is unsupported at the moment...).
#
# Supported cards include:
# Creative SoundBlaster ISA PnP/non-PnP
# Supports ESS and Avance ISA chips as well.
# Gravis UltraSound ISA PnP/non-PnP
# Crystal Semiconductor CS461x/428x PCI
# Neomagic 256AV (ac97)
# Most of the more common ISA/PnP sb/mss/ess compatable cards.

device		pcm

# For non-pnp sound cards with no bridge drivers only:
hint.pcm.0.at="isa"
hint.pcm.0.irq="10"
hint.pcm.0.drq="1"
hint.pcm.0.flags="0x0"

#
# midi: MIDI interfaces and synthesizers
#

device		midi

# For non-pnp sound cards with no bridge drivers:
hint.midi.0.at="isa"
hint.midi.0.irq="5"
hint.midi.0.flags="0x0"

# For serial ports (this example configures port 2):
# TODO: implement generic tty-midi interface so that we can use
#	other uarts.
hint.midi.0.at="isa"
hint.midi.0.port="0x2F8"
hint.midi.0.irq="3"

#
# seq: MIDI sequencer
#

device		seq

# The bridge drivers for sound cards.  These can be separately configured
# for providing services to the likes of new-midi.
# When used with 'device pcm' they also provide pcm sound services.
#
# sbc:  Creative SoundBlaster ISA PnP/non-PnP
#	Supports ESS and Avance ISA chips as well.
# gusc: Gravis UltraSound ISA PnP/non-PnP
# csa:  Crystal Semiconductor CS461x/428x PCI

# For non-PnP cards:
device		sbc
hint.sbc.0.at="isa"
hint.sbc.0.port="0x220"
hint.sbc.0.irq="5"
hint.sbc.0.drq="1"
hint.sbc.0.flags="0x15"
device		gusc
hint.gusc.0.at="isa"
hint.gusc.0.port="0x220"
hint.gusc.0.irq="5"
hint.gusc.0.drq="1"
hint.gusc.0.flags="0x13"

#
# Miscellaneous hardware:
#
# scd: Sony CD-ROM using proprietary (non-ATAPI) interface
# mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
# meteor: Matrox Meteor video capture board
# bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
# cy: Cyclades serial driver
# joy: joystick (including IO DATA PCJOY PC Card joystick)
# rc: RISCom/8 multiport card
# rp: Comtrol Rocketport(ISA/PCI) - single card
# si: Specialix SI/XIO 4-32 port terminal multiplexor
# nmdm: nullmodem terminal driver (see nmdm(4))

# Notes on the Comtrol Rocketport driver:
#
# The exact values used for rp0 depend on how many boards you have
# in the system.  The manufacturer's sample configs are listed as:
#
#               device  rp	# core driver support
#
#   Comtrol Rocketport ISA single card
#		hint.rp.0.at="isa"
#		hint.rp.0.port="0x280"
#
#   If instead you have two ISA cards, one installed at 0x100 and the
#   second installed at 0x180, then you should add the following to
#   your kernel probe hints:
#		hint.rp.0.at="isa"
#		hint.rp.0.port="0x100"
#		hint.rp.1.at="isa"
#		hint.rp.1.port="0x180"
#
#   For 4 ISA cards, it might be something like this:
#		hint.rp.0.at="isa"
#		hint.rp.0.port="0x180"
#		hint.rp.1.at="isa"
#		hint.rp.1.port="0x100"
#		hint.rp.2.at="isa"
#		hint.rp.2.port="0x340"
#		hint.rp.3.at="isa"
#		hint.rp.3.port="0x240"
#
#   For PCI cards, you need no hints.

# Mitsumi CD-ROM
device		mcd      
hint.mcd.0.at="isa"
hint.mcd.0.port="0x300"
# for the Sony CDU31/33A CDROM
device		scd
hint.scd.0.at="isa"
hint.scd.0.port="0x230"
device		joy			# PnP aware, hints for nonpnp only
hint.joy.0.at="isa"
hint.joy.0.port="0x201"
device		rc
hint.rc.0.at="isa"
hint.rc.0.port="0x220"
hint.rc.0.irq="12"
device		rp
hint.rp.0.at="isa"
hint.rp.0.port="0x280"
device		si
options 	SI_DEBUG
hint.si.0.at="isa"
hint.si.0.maddr="0xd0000"
hint.si.0.irq="12"
device		nmdm

#
# The `meteor' device is a PCI video capture board. It can also have the
# following options:
#   options METEOR_ALLOC_PAGES=xxx	preallocate kernel pages for data entry
#	figure (ROWS*COLUMN*BYTES_PER_PIXEL*FRAME+PAGE_SIZE-1)/PAGE_SIZE
#   options METEOR_DEALLOC_PAGES	remove all allocated pages on close(2)
#   options METEOR_DEALLOC_ABOVE=xxx	remove all allocated pages above the
#	specified amount. If this value is below the allocated amount no action
#	taken
#   options METEOR_SYSTEM_DEFAULT={METEOR_PAL|METEOR_NTSC|METEOR_SECAM}, used
#	for initialization of fps routine when a signal is not present.
#
# The 'bktr' device is a PCI video capture device using the Brooktree
# bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
# TV card, eg Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
# Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
#
# options 	OVERRIDE_CARD=xxx
# options 	OVERRIDE_TUNER=xxx
# options 	OVERRIDE_MSP=1
# options 	OVERRIDE_DBX=1
# These options can be used to override the auto detection
# The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
# Using sysctl(8) run-time overrides on a per-card basis can be made
#
# options 	BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
# or
# options 	BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
# Specifes the default video capture mode.
# This is required for Dual Crystal (28&35Mhz) boards where PAL is used
# to prevent hangs during initialisation.  eg VideoLogic Captivator PCI.
#
# options 	BKTR_USE_PLL
# PAL or SECAM users who have a 28Mhz crystal (and no 35Mhz crystal)
# must enable PLL mode with this option. eg some new Bt878 cards.
#
# options 	BKTR_GPIO_ACCESS
# This enable IOCTLs which give user level access to the GPIO port.
#
# options 	BKTR_NO_MSP_RESET
# Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
#
# options 	BKTR_430_FX_MODE
# Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
#
# options 	BKTR_SIS_VIA_MODE
# Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
# needed for some old SiS and VIA chipset motherboards.
# This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
# motherboards and motherboards with bad or incomplete PCI 2.1 support.
# As a rough guess, old = before 1998
#

device		meteor	1

#
# options	BKTR_USE_FREEBSD_SMBUS
# Compile with FreeBSD SMBus implementation
#
# Brooktree driver has been ported to the new I2C framework. Thus,
# you'll need to have the following 3 lines in the kernel config.
#     device smbus
#     device iicbus
#     device iicbb
#     device iicsmb
# The iic and smb devices are only needed if you want to control other
# I2C slaves connected to the external connector of some cards.
#
device		bktr

#
# SMB bus
#
# System Management Bus support is provided by the 'smbus' device.
# Access to the SMBus device is via the 'smb' device (/dev/smb*),
# which is a child of the 'smbus' device.
#
# Supported devices:
# smb		standard io through /dev/smb*
#
# Supported SMB interfaces:
# iicsmb	I2C to SMB bridge with any iicbus interface
# bktr		brooktree848 I2C hardware interface
# intpm		Intel PIIX4 (82371AB, 82443MX) Power Management Unit
# alpm		Acer Aladdin-IV/V/Pro2 Power Management Unit
# ichsmb	Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
# viapm		VIA VT82C586B/596B/686A and VT8233 Power Management Unit 
# amdpm		AMD 756 Power Management Unit
# nfpm		NVIDIA nForce Power Management Unit
#
device		smbus		# Bus support, required for smb below.

device		intpm
device		alpm
device		ichsmb
device		viapm
device		amdpm
device		nfpm

device		smb

#
# I2C Bus
#
# Philips i2c bus support is provided by the `iicbus' device.
#
# Supported devices:
# ic	i2c network interface
# iic	i2c standard io
# iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
#
# Supported interfaces:
# bktr	brooktree848 I2C software interface
#
# Other:
# iicbb	generic I2C bit-banging code (needed by lpbb, bktr)
#
device		iicbus		# Bus support, required for ic/iic/iicsmb below.
device		iicbb

device		ic
device		iic
device		iicsmb		# smb over i2c bridge

# Parallel-Port Bus
#
# Parallel port bus support is provided by the `ppbus' device.
# Multiple devices may be attached to the parallel port, devices
# are automatically probed and attached when found.
#
# Supported devices:
# vpo	Iomega Zip Drive
#	Requires SCSI disk support ('scbus' and 'da'), best
#	performance is achieved with ports in EPP 1.9 mode.
# lpt	Parallel Printer
# plip	Parallel network interface
# ppi	General-purpose I/O ("Geek Port") + IEEE1284 I/O
# pps	Pulse per second Timing Interface
# lpbb	Philips official parallel port I2C bit-banging interface
#
# Supported interfaces:
# ppc	ISA-bus parallel port interfaces.
#

options 	PPC_PROBE_CHIPSET # Enable chipset specific detection
				  # (see flags in ppc(4))
options 	DEBUG_1284	# IEEE1284 signaling protocol debug
options 	PERIPH_1284	# Makes your computer act as an IEEE1284
				# compliant peripheral
options 	DONTPROBE_1284	# Avoid boot detection of PnP parallel devices
options 	VP0_DEBUG	# ZIP/ZIP+ debug
options 	LPT_DEBUG	# Printer driver debug
options 	PPC_DEBUG	# Parallel chipset level debug
options 	PLIP_DEBUG	# Parallel network IP interface debug
options 	PCFCLOCK_VERBOSE         # Verbose pcfclock driver
options 	PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)

device		ppc
hint.ppc.0.at="isa"
hint.ppc.0.irq="7"
device		ppbus
device		vpo
device		lpt
device		plip
device		ppi
device		pps
device		lpbb
device		pcfclock

# Kernel BOOTP support

options 	BOOTP		# Use BOOTP to obtain IP address/hostname
				# Requires NFSCLIENT and NFS_ROOT
options 	BOOTP_NFSROOT	# NFS mount root filesystem using BOOTP info
options 	BOOTP_NFSV3	# Use NFS v3 to NFS mount root
options 	BOOTP_COMPAT	# Workaround for broken bootp daemons.
options 	BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP

#
# Add tie-ins for a hardware watchdog.  This only enable the hooks;
# the user must still supply the actual driver.
#
options 	HW_WDOG

#
# Disable swapping. This option removes all code which actually performs
# swapping, so it's not possible to turn it back on at run-time.
#
# This is sometimes usable for systems which don't have any swap space
# (see also sysctls "vm.defer_swapspace_pageouts" and
# "vm.disable_swapspace_pageouts")
#
#options 	NO_SWAPPING

# Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
# for sendfile(2) that are used to map file VM pages, and normally
# default to a quantity that is roughly 16*MAXUSERS+512. You would
# typically want about 4 of these for each simultaneous file send.
#
options 	NSFBUFS=1024

#
# Enable extra debugging code for locks.  This stores the filename and
# line of whatever acquired the lock in the lock itself, and change a
# number of function calls to pass around the relevant data.  This is
# not at all useful unless you are debugging lock code.  Also note
# that it is likely to break e.g. fstat(1) unless you recompile your
# userland with -DDEBUG_LOCKS as well.
#
options 	DEBUG_LOCKS


#####################################################################
# USB support
# UHCI controller
device		uhci
# OHCI controller
device		ohci
# General USB code (mandatory for USB)
device		usb
#
# USB Double Bulk Pipe devices
device		udbp
# Generic USB device driver
device		ugen
# Human Interface Device (anything with buttons and dials)
device		uhid
# USB keyboard
device		ukbd
# USB printer
device		ulpt
# USB Iomega Zip 100 Drive (Requires scbus and da)
device		umass
# USB modem support
device		umodem
# USB mouse
device		ums
# Diamond Rio 500 Mp3 player
device		urio
# USB scanners
device		uscanner
# USB serial support
device		ucom
# USB support for serial adapters based on the FT8U100AX and FT8U232AM
device		uftdi
# USB support for Prolific PL-2303 serial adapters
device		uplcom
# USB support for Belkin F5U103 and compatible serial adapters
device		ubsa
# USB serial support for DDI pocket's PHS
device		uvscom
# USB Visor and Palm devices
device		uvisor

# USB Fm Radio
device		ufm
#
# ADMtek USB ethernet. Supports the LinkSys USB100TX,
# the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
# and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
# eval board.
device		aue
#
# CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
# and Netmate II, and the Belkin F5U111.
device		cue
#
# Kawasaki LSI ethernet. Supports the LinkSys USB10T,
# Entrega USB-NET-E45, Peracom Ethernet Adapter, the
# 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
# the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
# and 2104USB, and the Corega USB-T.
device		kue

# debugging options for the USB subsystem
#
options 	USB_DEBUG

# options for ukbd:
options 	UKBD_DFLT_KEYMAP	# specify the built-in keymap
makeoptions	UKBD_DFLT_KEYMAP=it.iso

#####################################################################
# Firewire support

device		firewire	# Firewire bus code
device		sbp		# SCSI over Firewire (Requires scbus and da)
device		fwe		# Ethernet over Firewire (non-standard!)

#####################################################################
# crypto subsystem
#
# This is a port of the openbsd crypto framework.  Include this when
# configuring FAST_IPSEC and when you have a h/w crypto device to accelerate
# user applications that link to openssl.
#
# Drivers are ports from openbsd with some simple enhancements that have
# been fed back to openbsd.

device		crypto		# core crypto support
device		cryptodev	# /dev/crypto for access to h/w

device		hifn		# Hifn 7951, 7781, etc.
device		ubsec		# Broadcom 5501, 5601, 58xx

#####################################################################


#
# Embedded system options:
#
# An embedded system might want to run something other than init.
options 	INIT_PATH=/sbin/init:/stand/sysinstall

# Debug options
options 	BUS_DEBUG	# enable newbus debugging
options 	DEBUG_VFS_LOCKS	# enable vfs lock debugging

#####################################################################
# SYSV IPC KERNEL PARAMETERS
#
# Maximum number of entries in a semaphore map.
options 	SEMMAP=31

# Maximum number of System V semaphores that can be used on the system at
# one time. 
options 	SEMMNI=11

# Total number of semaphores system wide
options 	SEMMNS=61

# Total number of undo structures in system
options 	SEMMNU=31

# Maximum number of System V semaphores that can be used by a single process
# at one time. 
options 	SEMMSL=61

# Maximum number of operations that can be outstanding on a single System V
# semaphore at one time. 
options 	SEMOPM=101

# Maximum number of undo operations that can be outstanding on a single
# System V semaphore at one time. 
options 	SEMUME=11

# Maximum number of shared memory pages system wide.
options 	SHMALL=1025

# Maximum size, in bytes, of a single System V shared memory region. 
options 	SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
options 	SHMMAXPGS=1025

# Minimum size, in bytes, of a single System V shared memory region. 
options 	SHMMIN=2

# Maximum number of shared memory regions that can be used on the system
# at one time. 
options 	SHMMNI=33

# Maximum number of System V shared memory regions that can be attached to
# a single process at one time. 
options 	SHMSEG=9

# Set the amount of time (in seconds) the system will wait before
# rebooting automatically when a kernel panic occurs.  If set to (-1),
# the system will wait indefinitely until a key is pressed on the
# console.
options 	PANIC_REBOOT_WAIT_TIME=16

#####################################################################

# More undocumented options for linting.
# Note that documenting these are not considered an affront.

options 	CAM_DEBUG_DELAY

# VFS cluster debugging.
options 	CLUSTERDEBUG

options 	DEBUG

# Kernel filelock debugging.
options 	LOCKF_DEBUG

# System V compatible message queues
# Please note that the values provided here are used to test kernel
# building.  The defaults in the sources provide almost the same numbers.
# MSGSSZ must be a power of 2 between 8 and 1024.
options 	MSGMNB=2049	# Max number of chars in queue
options 	MSGMNI=41	# Max number of message queue identifiers
options 	MSGSEG=2049	# Max number of message segments
options 	MSGSSZ=16	# Size of a message segment
options 	MSGTQL=41	# Max number of messages in system

options 	NBUF=512	# Number of buffer headers

options 	NMBCLUSTERS=1024	# Number of mbuf clusters

options 	SCSI_NCR_DEBUG
options 	SCSI_NCR_MAX_SYNC=10000
options 	SCSI_NCR_MAX_WIDE=1
options 	SCSI_NCR_MYADDR=7

options 	SC_DEBUG_LEVEL=5	# Syscons debug level
options 	SC_RENDER_DEBUG	# syscons rendering debugging

options 	SHOW_BUSYBUFS	# List buffers that prevent root unmount
options 	SLIP_IFF_OPTS
options 	VFS_BIO_DEBUG	# VFS buffer I/O debugging

options		KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack

# Yet more undocumented options for linting.
options 	AAC_DEBUG
options 	ACD_DEBUG
options 	ACPI_MAX_THREADS=1
#!options 	ACPI_NO_SEMAPHORES
# Broken:
##options 	ASR_MEASURE_PERFORMANCE
options 	AST_DEBUG
options 	ATAPI_DEBUG
options 	ATA_DEBUG
# BKTR_ALLOC_PAGES has no effect except to cause warnings, and
# BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
# driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
##options 	BKTR_ALLOC_PAGES=(217*4+1)
options 	BROOKTREE_ALLOC_PAGES=(217*4+1)
options 	MAXFILES=999
# METEOR_TEST_VIDEO has no effect since meteor is broken.
options 	METEOR_TEST_VIDEO
options 	NDEVFSINO=1025
options 	NDEVFSOVERFLOW=32769
OpenPOWER on IntegriCloud