aboutsummaryrefslogtreecommitdiff
path: root/sys/amd64/conf/NOTES
blob: fe0d908d0e39df17a0dacd292d2a96d4d9c00ced (plain) (blame)
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
#
# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
#
# This file contains machine dependent kernel configuration notes.  For
# machine independent notes, look in /sys/conf/NOTES.
#
# $FreeBSD$
#

#
# This directive is mandatory; it defines the architecture to be
# configured for; in this case, the AMD64 family based machines.
#
machine		amd64

#
# We want LINT to cover profiling as well.
#XXX#profile         2


#####################################################################
# SMP OPTIONS:
#
# The apic device enables the use of the I/O APIC for interrupt delivery.
# The apic device can be used in both UP and SMP kernels, but is required
# for SMP kernels.  Thus, the apic device is not strictly an SMP option,
# but it is a prerequisite for SMP.
#
# Notes:
#
# By default, mixed mode is used to route IRQ0 from the AT timer via
# the 8259A master PIC through the ExtINT pin on the first I/O APIC.
# This can be disabled via the NO_MIXED_MODE option.  In that case,
# IRQ0 will be routed via an intpin on the first I/O APIC.  Not all
# motherboards hook IRQ0 up to the first I/O APIC even though their
# MP table or MADT may claim to do so.  That is why mixed mode is
# enabled by default.
#

# Optional:
device		atpic			# Optional legacy pic support
device		mptable			# Optional MPSPEC mptable support
options 	NO_MIXED_MODE		# Disable use of mixed mode


#####################################################################
# CPU OPTIONS

#
# You must specify at least one CPU (the one you intend to run on);
# deleting the specification for CPUs you don't need to use may make
# parts of the system run faster.
#
cpu		HAMMER			# aka K8, aka Opteron & Athlon64

#
# Options for CPU features.
#

#
# PERFMON causes the driver for Pentium/Pentium Pro performance counters
# to be compiled.  See perfmon(4) for more information.
#
#XXX#options 	PERFMON

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

#
# DEVICE_POLLING adds support for mixed interrupt-polling handling
# of network device drivers, which has significant benefits in terms
# of robustness to overloads and responsivity, as well as permitting
# accurate scheduling of the CPU time between kernel network processing
# and other activities.  The drawback is a moderate (up to 1/HZ seconds)
# potential increase in response times.
# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
# to achieve smoother behaviour.
# Additionally, you can enable/disable polling at runtime with the
# sysctl variable kern.polling.enable (defaults off), and select
# the CPU fraction reserved to userland with the sysctl variable
# kern.polling.user_frac (default 50, range 0..100).
#
# Not all device drivers support this mode of operation at the time of
# this writing.  See polling(4) for more details.

options 	DEVICE_POLLING

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

# The following options are used for debugging clock behavior only, and
# should not be used for production systems.

# CLK_CALIBRATION_LOOP causes clock calibration to be run in a loop at
# startup until the user presses a key.  (The i8254 clock is always
# calibrated relative to the RTC (mc146818a) and this option causes the
# calibration to be repeated.)
options 	CLK_CALIBRATION_LOOP

# CLK_USE_I8254_CALIBRATION causes the calibrated frequency of the i8254
# clock to actually be used.
options 	CLK_USE_I8254_CALIBRATION

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

device		gzip		#Exec gzipped a.out's.  REQUIRES COMPAT_AOUT!


#####################################################################
# HARDWARE BUS CONFIGURATION

#
# ISA bus
#
device		isa

#
# Options for `isa':
#
# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
# This option breaks suspend/resume on some portables.
#
# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
# Automatic EOI is documented not to work for for the slave with the
# original i8259A, but it works for some clones and some integrated
# versions.
#
# MAXMEM specifies the amount of RAM on the machine; if this is not
# specified, FreeBSD will first read the amount of memory from the CMOS
# RAM, so the amount of memory will initially be limited to 64MB or 16MB
# depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
# then attempt to detect the installed amount of RAM.  If this probe
# fails to detect >64MB RAM you will have to use the MAXMEM option.
# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
# be 131072 (128 * 1024).
#
# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
# reset the CPU for reboot.  This is needed on some systems with broken
# keyboard controllers.

options 	AUTO_EOI_1
#options 	AUTO_EOI_2

options 	MAXMEM=(128*1024)
#options 	BROKEN_KEYBOARD_RESET

#
# PCI bus & PCI options:
#
device		pci

#
# AGP GART support
device		agp

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

#
# Optional devices:
#

# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support.  This will create
# the /dev/3dfx0 device to work with glide implementations.  This should get
# linked to /dev/3dfx and /dev/voodoo.  Note that this is not the same as
# the tdfx DRI module from XFree86 and is completely unrelated.
#
# To enable Linuxulator support, one must also include COMPAT_LINUX in the
# config as well, or you will not have the dependencies.  The other option
# is to load both as modules.

device		tdfx			# Enable 3Dfx Voodoo support
#XXX#options 	TDFX_LINUX		# Enable Linuxulator support

#
# ACPI support using the Intel ACPI Component Architecture reference
# implementation.
#
# ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
# kernel environment variables to select initial debugging levels for the
# Intel ACPICA code.  (Note that the Intel code must also have USE_DEBUGGER
# defined when it is built).
#
# ACPI_MAX_THREADS sets the number of task threads started.
#
# ACPI_NO_SEMAPHORES makes the AcpiOs*Semaphore routines a no-op.
#
# ACPICA_PEDANTIC enables strict checking of AML.  Our default is to
# relax these checks to allow code generated by the Microsoft compiler
# to still execute.
#
# Note that building ACPI into the kernel is deprecated; the module is
# normally loaded automatically by the loader.

device		acpi
options 	ACPI_DEBUG
options 	ACPI_MAX_THREADS=1
#!options 	ACPI_NO_SEMAPHORES
#!options 	ACPICA_PEDANTIC

# DRM options:
# mgadrm:    AGP Matrox G200, G400, G450, G550
# r128drm:   ATI Rage 128
# radeondrm: ATI Radeon up to 9000/9100
# sisdrm:    SiS 300/305,540,630
# tdfxdrm:   3dfx Voodoo 3/4/5 and Banshee
# DRM_DEBUG: include debug printfs, very slow
#
# mga requires AGP in the kernel, and it is recommended
# for AGP r128 and radeon cards.

device		mgadrm
device		"r128drm"
device		radeondrm
device		sisdrm
device		tdfxdrm

options 	DRM_DEBUG

#
# Network interfaces:
#

# ath:  Atheros a/b/g WiFi adapters (requires ath_hal and wlan)
# ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
#       HP PC Lan+, various PC Card devices (refer to etc/defaults/pccard.conf)
#       (requires miibus)
# lnc:  Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 and
#       Am79C960)

#XXX#	still calls MD i386 kvtop function instead of vtophys etc
#XXX#device		ed
#XXX#device		lnc

#XXX#device	ath
#XXX#device	ath_hal		# Atheros HAL (includes binary component)
device		wlan		# 802.11 layer

#
# ATA raid adapters
#
#XXX this stores pointers in a 32bit field that is defined by the hardware
#device	pst

#
# 3ware 9000 series PATA/SATA RAID controller driver and options.
# The driver is implemented as a SIM, and so, needs the CAM infrastructure.
#
options		TWA_DEBUG		# 0-10; 10 prints the most messages.
options		TWA_FLASH_FIRMWARE	# firmware image bundled when defined.
device		twa			# 3ware 9000 series PATA/SATA RAID

#
# SCSI host adapters:
#
# ncv: NCR 53C500 based SCSI host adapters.
# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
# stg: TMC 18C30, 18C50 based SCSI host adapters.

device		ncv
device		nsp
device		stg

#
# Adaptec FSA RAID controllers, including integrated DELL controllers,
# the Dell PERC 2/QC and the HP NetRAID-4M
device		aac
device		aacp	# SCSI Passthrough interface (optional, CAM required)

#
# IBM (now Adaptec) ServeRAID controllers
device		ips

#
# SafeNet crypto driver: can be moved to the MI NOTES as soon as
# it's tested on a big-endian machine
#
device		safe		# SafeNet 1141
options		SAFE_DEBUG	# enable debugging support: hw.safe.debug
options		SAFE_RNDTEST	# enable rndtest support

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

#
# Miscellaneous hardware:
#
# cy: Cyclades serial driver
# digi: Digiboard driver

# Notes on the Specialix SI/XIO driver:
#  The host card is memory, not IO mapped.
#  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
#  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
#  The cards can use an IRQ of 11, 12 or 15.

device		cy
options 	CY_PCI_FASTINTR		# Use with cy_pci unless irq is shared
device		digi
# BIOS & FEP/OS components of device digi.
device		digi_CX
device		digi_CX_PCI
device		digi_EPCX
device		digi_EPCX_PCI
device		digi_Xe
device		digi_Xem
device		digi_Xr
# sx device is i386 and pc98 only at the moment.
device		sx
options 	SX_DEBUG
# HOT1 Xilinx 6200 card (http://www.vcc.com/)
device		xrpu

#
# Laptop/Notebook options:
#


#
# I2C Bus
#

#---------------------------------------------------------------------------
# ISDN4BSD
#
# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
#
# i4b passive ISDN cards support contains the following hardware drivers:
#
#	isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
#	iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
#	ifpi  - AVM Fritz!Card PCI driver
#	ifpi2  - AVM Fritz!Card PCI version 2 driver
#	itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
#
# i4b active ISDN cards support contains the following hardware drivers:
#
#	iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
#
# Note that the ``options'' (if given) and ``device'' lines must BOTH
# be uncommented to enable support for a given card !
#
# In addition to a hardware driver (and probably an option) the mandatory
# ISDN protocol stack devices and the mandatory support device must be
# enabled as well as one or more devices from the optional devices section.
#
#---------------------------------------------------------------------------
#	isic driver (Siemens/Infineon chipsets)
#
#XXX#device	isic
#
# PCI bus Cards:
# --------------
#
# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI)
options 	ELSA_QS1PCI
#
#---------------------------------------------------------------------------
#	ifpi2 driver for AVM Fritz!Card PCI version 2
#
# AVM Fritz!Card PCI version 2
#XXX#device  "ifpi2"
#
#---------------------------------------------------------------------------
#	iwic driver for Winbond W6692 chipset
#
# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards)
#XXX#device  iwic
#
#---------------------------------------------------------------------------
#	itjc driver for Siemens ISAC / TJNet Tiger300/320 chipset
#
# Traverse Technologies NETjet-S
# Teles PCI-TJ
#XXX#device  itjc
#
#---------------------------------------------------------------------------
#	iavc driver (AVM active cards, needs i4bcapi driver!)
#
#XXX#device	iavc
#
#---------------------------------------------------------------------------
#	ISDN Protocol Stack - mandatory for all hardware drivers
#
# Q.921 / layer 2 - i4b passive cards D channel handling
#XXX#device		"i4bq921"
#
# Q.931 / layer 3 - i4b passive cards D channel handling
#XXX#device		"i4bq931"
#
# layer 4 - i4b common passive and active card handling
#XXX#device		"i4b"
#
#---------------------------------------------------------------------------
#	ISDN devices - mandatory for all hardware drivers
#
# userland driver to do ISDN tracing (for passive cards only)
#XXX#device		"i4btrc"	4
#
# userland driver to control the whole thing
#XXX#device		"i4bctl"
#
#---------------------------------------------------------------------------
#	ISDN devices - optional
#
# userland driver for access to raw B channel
#XXX#device		"i4brbch"	4
#
# userland driver for telephony
#XXX#device		"i4btel"	2
#
# network driver for IP over raw HDLC ISDN
#XXX#device		"i4bipr"	4
# enable VJ header compression detection for ipr i/f
options 	IPR_VJ
# enable logging of the first n IP packets to isdnd (n=32 here)
options 	IPR_LOG=32
#
# network driver for sync PPP over ISDN; requires an equivalent
# number of sppp device to be configured
#XXX#device		"i4bisppp"	4
#
# B-channel interface to the netgraph subsystem
#XXX#device		"i4bing"	2
#
#---------------------------------------------------------------------------

#
# System Management Bus (SMB)
#
options 	ENABLE_ALART		# Control alarm on Intel intpm driver

#
# Set the number of PV entries per process.  Increasing this can
# stop panics related to heavy use of shared memory.  However, that can
# (combined with large amounts of physical memory) cause panics at
# boot time due the kernel running out of VM space.
#
# If you're tweaking this, you might also want to increase the sysctls
# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
#
# The value below is the one more than the default.
#
options 	PMAP_SHPGPERPROC=201


#####################################################################
# ABI Emulation

#XXX keep these here for now and reactivate when support for emulating
#XXX these 32 bit binaries is added.

# Enable iBCS2 runtime support for SCO and ISC binaries
#XXX#options 	IBCS2

# Emulate spx device for client side of SVR3 local X interface
#XXX#options 	SPX_HACK

# Enable Linux ABI emulation
#XXX#options 	COMPAT_LINUX

# Enable 32-bit Linux ABI emulation (requires COMPAT_43 and IA32)
options 	COMPAT_LINUX32

# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
# and PSEUDOFS)
#XXX#options 	LINPROCFS

#
# SysVR4 ABI emulation
#
# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
# a KLD module.
# The STREAMS network emulation code can also be compiled statically or as a
# module.  If loaded as a module, it must be loaded before the svr4 module
# (the /usr/sbin/svr4 script does this for you).  If compiling statically,
# the `streams' device must be configured into any kernel which also
# specifies COMPAT_SVR4.  It is possible to have a statically-configured
# STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
# script understands that it doesn't need to load the `streams' module under
# those circumstances.
# Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
# (whether static or dynamic).
#
#XXX#options 	COMPAT_SVR4	# build emulator statically
#XXX#options 	DEBUG_SVR4	# enable verbose debugging
#XXX#device	streams		# STREAMS network driver (required for svr4).


#####################################################################
# VM OPTIONS

# KSTACK_PAGES is the number of memory pages to assign to the kernel
# stack of each thread.

options 	KSTACK_PAGES=3

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

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

options 	FB_INSTALL_CDEV		# install a CDEV entry in /dev

options 	KBDIO_DEBUG=2
options 	KBD_MAXRETRY=4
options 	KBD_MAXWAIT=6
options 	KBD_RESETDELAY=201

options 	PSM_DEBUG=1

options 	TIMER_FREQ=((14318182+6)/12)

options 	VM_KMEM_SIZE
options 	VM_KMEM_SIZE_MAX
options 	VM_KMEM_SIZE_SCALE


# The I/O device
device		io