FreeBSD/Linux Kernel Cross Reference
sys/i386/conf/NOTES
1 #
2 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
3 #
4 # This file contains machine dependent kernel configuration notes. For
5 # machine independent notes, look in /sys/conf/NOTES.
6 #
7 # $FreeBSD: releng/11.1/sys/i386/conf/NOTES 314210 2017-02-24 16:02:01Z kib $
8 #
9
10 #
11 # We want LINT to cover profiling as well.
12 profile 2
13
14 #
15 # Enable the kernel DTrace hooks which are required to load the DTrace
16 # kernel modules.
17 #
18 options KDTRACE_HOOKS
19
20 # DTrace core
21 # NOTE: introduces CDDL-licensed components into the kernel
22 #device dtrace
23
24 # DTrace modules
25 #device dtrace_profile
26 #device dtrace_sdt
27 #device dtrace_fbt
28 #device dtrace_systrace
29 #device dtrace_prototype
30 #device dtnfscl
31 #device dtmalloc
32
33 # Alternatively include all the DTrace modules
34 #device dtraceall
35
36
37 #####################################################################
38 # SMP OPTIONS:
39 #
40 # The apic device enables the use of the I/O APIC for interrupt delivery.
41 # The apic device can be used in both UP and SMP kernels, but is required
42 # for SMP kernels. Thus, the apic device is not strictly an SMP option,
43 # but it is a prerequisite for SMP.
44 #
45 # Notes:
46 #
47 # HTT CPUs should only be used if they are enabled in the BIOS. For
48 # the ACPI case, ACPI only correctly tells us about any HTT CPUs if
49 # they are enabled. However, most HTT systems do not list HTT CPUs
50 # in the MP Table if they are enabled, thus we guess at the HTT CPUs
51 # for the MP Table case. However, we shouldn't try to guess and use
52 # these CPUs if HTT is disabled. Thus, HTT guessing is only enabled
53 # for the MP Table if the user explicitly asks for it via the
54 # MPTABLE_FORCE_HTT option. Do NOT use this option if you have HTT
55 # disabled in your BIOS.
56 #
57 # IPI_PREEMPTION instructs the kernel to preempt threads running on other
58 # CPUS if needed. Relies on the PREEMPTION option
59
60 # Mandatory:
61 device apic # I/O apic
62
63 # Optional:
64 options MPTABLE_FORCE_HTT # Enable HTT CPUs with the MP Table
65 options IPI_PREEMPTION
66
67 #
68 # Watchdog routines.
69 #
70 options MP_WATCHDOG
71
72 # Debugging options.
73 #
74 options COUNT_XINVLTLB_HITS # Counters for TLB events
75 options COUNT_IPIS # Per-CPU IPI interrupt counters
76
77
78
79 #####################################################################
80 # CPU OPTIONS
81
82 #
83 # You must specify at least one CPU (the one you intend to run on);
84 # deleting the specification for CPUs you don't need to use may make
85 # parts of the system run faster.
86 #
87 cpu I486_CPU
88 cpu I586_CPU # aka Pentium(tm)
89 cpu I686_CPU # aka Pentium Pro(tm)
90
91 #
92 # Options for CPU features.
93 #
94 # CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
95 # forgotten to enable them.
96 #
97 # CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
98 # CPU if CPU supports it. The default is double-clock mode on
99 # BlueLightning CPU box.
100 #
101 # CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
102 # BlueLightning CPU. It works only with Cyrix FPU, and this option
103 # should not be used with Intel FPU.
104 #
105 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
106 #
107 # CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
108 # of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
109 # Otherwise, the NO_LOCK bit of CCR1 is cleared. (NOTE 3)
110 #
111 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
112 # mapped mode. Default is 2-way set associative mode.
113 #
114 # CPU_DISABLE_5X86_LSSER disables load store serialize (i.e., enables
115 # reorder). This option should not be used if you use memory mapped
116 # I/O device(s).
117 #
118 # CPU_ELAN enables support for AMDs ElanSC520 CPU.
119 # CPU_ELAN_PPS enables precision timestamp code.
120 # CPU_ELAN_XTAL sets the clock crystal frequency in Hz.
121 #
122 # CPU_ENABLE_LONGRUN enables support for Transmeta Crusoe LongRun
123 # technology which allows to restrict power consumption of the CPU by
124 # using group of hw.crusoe.* sysctls.
125 #
126 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
127 #
128 # CPU_GEODE is for the SC1100 Geode embedded processor. This option
129 # is necessary because the i8254 timecounter is toast.
130 #
131 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
132 # for i386 machines.
133 #
134 # CPU_IORT defines I/O clock delay time (NOTE 1). Default values of
135 # I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
136 # (no clock delay).
137 #
138 # CPU_L2_LATENCY specifies the L2 cache latency value. This option is used
139 # only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
140 # The default value is 5.
141 #
142 # CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
143 # of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
144 # 1).
145 #
146 # CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs. This option
147 # is useful when you use Socket 8 to Socket 370 converter, because most Pentium
148 # Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
149 #
150 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
151 #
152 # CPU_SOEKRIS enables support www.soekris.com hardware.
153 #
154 # CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
155 # enters suspend mode following execution of HALT instruction.
156 #
157 # CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
158 #
159 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
160 # K5/K6/K6-2 CPUs.
161 #
162 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
163 # flush at hold state.
164 #
165 # CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
166 # without cache flush at hold state, and (2) write-back CPU cache on
167 # Cyrix 6x86 whose revision < 2.7 (NOTE 2).
168 #
169 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
170 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
171 # executed. This option is only needed if I586_CPU is also defined,
172 # and should be included for any non-Pentium CPU that defines it.
173 #
174 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
175 # which indicates that the 15-16MB range is *definitely* not being
176 # occupied by an ISA memory hole.
177 #
178 # NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
179 # CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
180 # These options may crash your system.
181 #
182 # NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
183 # in write-through mode when revision < 2.7. If revision of Cyrix
184 # 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
185 #
186 # NOTE 3: This option may cause failures for software that requires
187 # locked cycles in order to operate correctly.
188 #
189 options CPU_ATHLON_SSE_HACK
190 options CPU_BLUELIGHTNING_3X
191 options CPU_BLUELIGHTNING_FPU_OP_CACHE
192 options CPU_BTB_EN
193 options CPU_DIRECT_MAPPED_CACHE
194 options CPU_DISABLE_5X86_LSSER
195 options CPU_ELAN
196 options CPU_ELAN_PPS
197 options CPU_ELAN_XTAL=32768000
198 options CPU_ENABLE_LONGRUN
199 options CPU_FASTER_5X86_FPU
200 options CPU_GEODE
201 options CPU_I486_ON_386
202 options CPU_IORT
203 options CPU_L2_LATENCY=5
204 options CPU_LOOP_EN
205 options CPU_PPRO2CELERON
206 options CPU_RSTK_EN
207 options CPU_SOEKRIS
208 options CPU_SUSP_HLT
209 options CPU_UPGRADE_HW_CACHE
210 options CPU_WT_ALLOC
211 options CYRIX_CACHE_WORKS
212 options CYRIX_CACHE_REALLY_WORKS
213 #options NO_F00F_HACK
214
215 # Debug options
216 options NPX_DEBUG # enable npx debugging
217
218 #
219 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
220 # to be compiled. See perfmon(4) for more information.
221 #
222 options PERFMON
223
224 #
225 # XBOX causes the kernel to be bootable on the Microsoft XBox console system.
226 # The resulting kernel will auto-detect whether it is being booted on a XBox,
227 # so kernels compiled with this option will also work on an ordinary PC.
228 # This option require I686_CPU.
229 #
230 # xboxfb includes support for the XBox frame buffer device. It is fully USB-
231 # keyboard aware, and will only be used if an xbox is detected. This option
232 # (obviously) requires XBOX support in your kernel.
233 #
234 # NOTE: xboxfb currently conflicts with syscons(4); if you have an XBOX and
235 # include both in your kernel; you will not get any video output. Ordinary
236 # PC's do not suffer from this.
237 #
238 options XBOX
239 device xboxfb
240
241
242 #####################################################################
243 # NETWORKING OPTIONS
244
245 #
246 # DEVICE_POLLING adds support for mixed interrupt-polling handling
247 # of network device drivers, which has significant benefits in terms
248 # of robustness to overloads and responsivity, as well as permitting
249 # accurate scheduling of the CPU time between kernel network processing
250 # and other activities. The drawback is a moderate (up to 1/HZ seconds)
251 # potential increase in response times.
252 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
253 # to achieve smoother behaviour.
254 # Additionally, you can enable/disable polling at runtime with help of
255 # the ifconfig(8) utility, and select the CPU fraction reserved to
256 # userland with the sysctl variable kern.polling.user_frac
257 # (default 50, range 0..100).
258 #
259 # Not all device drivers support this mode of operation at the time of
260 # this writing. See polling(4) for more details.
261
262 options DEVICE_POLLING
263
264 # BPF_JITTER adds support for BPF just-in-time compiler.
265
266 options BPF_JITTER
267
268 # OpenFabrics Enterprise Distribution (Infiniband).
269 options OFED
270 options OFED_DEBUG_INIT
271
272 # Sockets Direct Protocol
273 options SDP
274 options SDP_DEBUG
275
276 # IP over Infiniband
277 options IPOIB
278 options IPOIB_DEBUG
279 options IPOIB_CM
280
281
282 #####################################################################
283 # CLOCK OPTIONS
284
285 # Provide read/write access to the memory in the clock chip.
286 device nvram # Access to rtc cmos via /dev/nvram
287
288
289 #####################################################################
290 # MISCELLANEOUS DEVICES AND OPTIONS
291
292 device speaker #Play IBM BASIC-style noises out your speaker
293 hint.speaker.0.at="isa"
294 hint.speaker.0.port="0x61"
295 device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
296 device apm_saver # Requires APM
297
298
299 #####################################################################
300 # HARDWARE BUS CONFIGURATION
301
302 #
303 # ISA bus
304 #
305 device isa
306
307 #
308 # Options for `isa':
309 #
310 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
311 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
312 # This option breaks suspend/resume on some portables.
313 #
314 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
315 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
316 # Automatic EOI is documented not to work for for the slave with the
317 # original i8259A, but it works for some clones and some integrated
318 # versions.
319 #
320 # MAXMEM specifies the amount of RAM on the machine; if this is not
321 # specified, FreeBSD will first read the amount of memory from the CMOS
322 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
323 # depending on the BIOS. If the BIOS reports 64MB, a memory probe will
324 # then attempt to detect the installed amount of RAM. If this probe
325 # fails to detect >64MB RAM you will have to use the MAXMEM option.
326 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
327 # be 131072 (128 * 1024).
328 #
329 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
330 # reset the CPU for reboot. This is needed on some systems with broken
331 # keyboard controllers.
332
333 options AUTO_EOI_1
334 #options AUTO_EOI_2
335
336 options MAXMEM=(128*1024)
337 #options BROKEN_KEYBOARD_RESET
338
339 #
340 # EISA bus
341 #
342 # The EISA bus device is `eisa'. It provides auto-detection and
343 # configuration support for all devices on the EISA bus.
344
345 device eisa
346
347 # By default, only 10 EISA slots are probed, since the slot numbers
348 # above clash with the configuration address space of the PCI subsystem,
349 # and the EISA probe is not very smart about this. This is sufficient
350 # for most machines, but in particular the HP NetServer LC series comes
351 # with an onboard AIC7770 dual-channel SCSI controller on EISA slot #11,
352 # thus you need to bump this figure to 12 for them.
353 options EISA_SLOTS=12
354
355 #
356 # MCA bus:
357 #
358 # The MCA bus device is `mca'. It provides auto-detection and
359 # configuration support for all devices on the MCA bus.
360 # No hints are required for MCA.
361
362 device mca
363
364 #
365 # AGP GART support
366 device agp
367
368 # AGP debugging.
369 options AGP_DEBUG
370
371
372 #####################################################################
373 # HARDWARE DEVICE CONFIGURATION
374
375 # To include support for VGA VESA video modes
376 options VESA
377
378 # Turn on extra debugging checks and output for VESA support.
379 options VESA_DEBUG
380
381 device dpms # DPMS suspend & resume via VESA BIOS
382
383 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
384 options X86BIOS
385
386 #
387 # Hints for the non-optional Numeric Processing eXtension driver.
388 hint.npx.0.flags="0x0"
389 hint.npx.0.irq="13"
390
391 #
392 # `flags' for npx0:
393 # 0x01 don't use the npx registers to optimize bcopy.
394 # 0x02 don't use the npx registers to optimize bzero.
395 # 0x04 don't use the npx registers to optimize copyin or copyout.
396 # The npx registers are normally used to optimize copying and zeroing when
397 # all of the following conditions are satisfied:
398 # I586_CPU is an option
399 # the cpu is an i586 (perhaps not a Pentium)
400 # the probe for npx0 succeeds
401 # INT 16 exception handling works.
402 # Then copying and zeroing using the npx registers is normally 30-100% faster.
403 # The flags can be used to control cases where it doesn't work or is slower.
404 # Setting them at boot time using hints works right (the optimizations
405 # are not used until later in the bootstrap when npx0 is attached).
406 # Flag 0x08 automatically disables the i586 optimized routines.
407 #
408
409 #
410 # Optional devices:
411 #
412
413 # PS/2 mouse
414 device psm
415 hint.psm.0.at="atkbdc"
416 hint.psm.0.irq="12"
417
418 # Options for psm:
419 options PSM_HOOKRESUME #hook the system resume event, useful
420 #for some laptops
421 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
422
423 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
424 device atkbdc
425 hint.atkbdc.0.at="isa"
426 hint.atkbdc.0.port="0x060"
427
428 # The AT keyboard
429 device atkbd
430 hint.atkbd.0.at="atkbdc"
431 hint.atkbd.0.irq="1"
432
433 # Options for atkbd:
434 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
435 makeoptions ATKBD_DFLT_KEYMAP=fr.dvorak
436
437 # `flags' for atkbd:
438 # 0x01 Force detection of keyboard, else we always assume a keyboard
439 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
440 # 0x03 Force detection and avoid reset, might help with certain
441 # dockingstations
442 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
443
444 # Video card driver for VGA adapters.
445 device vga
446 hint.vga.0.at="isa"
447
448 # Options for vga:
449 # Try the following option if the mouse pointer is not drawn correctly
450 # or font does not seem to be loaded properly. May cause flicker on
451 # some systems.
452 options VGA_ALT_SEQACCESS
453
454 # If you can dispense with some vga driver features, you may want to
455 # use the following options to save some memory.
456 #options VGA_NO_FONT_LOADING # don't save/load font
457 #options VGA_NO_MODE_CHANGE # don't change video modes
458
459 # Older video cards may require this option for proper operation.
460 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
461
462 # The following option probably won't work with the LCD displays.
463 options VGA_WIDTH90 # support 90 column modes
464
465 # Debugging.
466 options VGA_DEBUG
467
468 # vt(4) drivers.
469 device vt_vga
470
471 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
472 device s3pci
473
474 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
475 # the /dev/3dfx0 device to work with glide implementations. This should get
476 # linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
477 # the tdfx DRI module from XFree86 and is completely unrelated.
478 #
479 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
480 # config as well. The other option is to load both as modules.
481
482 device tdfx # Enable 3Dfx Voodoo support
483 device tdfx_linux # Enable Linuxulator support
484
485 #
486 # ACPI support using the Intel ACPI Component Architecture reference
487 # implementation.
488 #
489 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
490 # kernel environment variables to select initial debugging levels for the
491 # Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER
492 # defined when it is built).
493
494 device acpi
495 options ACPI_DEBUG
496 options ACPI_DMAR
497
498 # ACPI WMI Mapping driver
499 device acpi_wmi
500
501 # ACPI Asus Extras (LCD backlight/brightness, video output, etc.)
502 device acpi_asus
503
504 # ACPI Fujitsu Extras (Buttons)
505 device acpi_fujitsu
506
507 # ACPI extras driver for HP laptops
508 device acpi_hp
509
510 # ACPI extras driver for IBM laptops
511 device acpi_ibm
512
513 # ACPI Panasonic Extras (LCD backlight/brightness, video output, etc.)
514 device acpi_panasonic
515
516 # ACPI Sony extra (LCD brightness)
517 device acpi_sony
518
519 # ACPI Toshiba Extras (LCD backlight/brightness, video output, etc.)
520 device acpi_toshiba
521
522 # ACPI Video Extensions (LCD backlight/brightness, video output, etc.)
523 device acpi_video
524
525 # ACPI Docking Station
526 device acpi_dock
527
528 # ACPI ASOC ATK0110 ASUSTeK AI Booster (voltage, temperature and fan sensors)
529 device aibs
530
531 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
532 device cpufreq
533
534 # Direct Rendering modules for 3D acceleration.
535 device drm # DRM core module required by DRM drivers
536 device i915drm # Intel i830 through i915
537 device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
538 device mgadrm # AGP Matrox G200, G400, G450, G550
539 device r128drm # ATI Rage 128
540 device radeondrm # ATI Radeon
541 device savagedrm # S3 Savage3D, Savage4
542 device sisdrm # SiS 300/305, 540, 630
543 device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
544 device viadrm # VIA
545 options DRM_DEBUG # Include debug printfs (slow)
546
547 #
548 # mse: Logitech and ATI InPort bus mouse ports
549
550 device mse
551 hint.mse.0.at="isa"
552 hint.mse.0.port="0x23c"
553 hint.mse.0.irq="5"
554
555 #
556 # Network interfaces:
557 #
558
559 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
560 # adapters.
561 # ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
562 # with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
563 # NETGRAPH_CRONYX is configured)
564 # cp: Cronyx Tau-PCI sync single/dual/four port
565 # V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
566 # serial adaptor (requires sppp (default), or NETGRAPH if
567 # NETGRAPH_CRONYX is configured)
568 # cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
569 # ctau: Cronyx Tau sync dual port V.35/RS-232/RS-530/RS-449/X.21/G.703/E1
570 # serial adaptor (requires sppp (default), or NETGRAPH if
571 # NETGRAPH_CRONYX is configured)
572 # ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
573 # HP PC Lan+, various PC Card devices
574 # (requires miibus)
575 # ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
576 # Intel EtherExpress
577 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
578 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
579 # Requires the iwi firmware module
580 # iwn: Intel Wireless WiFi Link 1000/105/135/2000/4965/5000/6000/6050 abgn
581 # 802.11 network adapters
582 # Requires the iwn firmware module
583 # mlx4ib: Mellanox ConnectX HCA InfiniBand
584 # mlxen: Mellanox ConnectX HCA Ethernet
585 # mthca: Mellanox HCA InfiniBand
586 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
587 # sbni: Granch SBNI12-xx ISA and PCI adapters
588 # vmx: VMware VMXNET3 Ethernet (BSD open source)
589 # wl: Lucent Wavelan (ISA card only).
590 # wpi: Intel 3945ABG Wireless LAN controller
591 # Requires the wpi firmware module
592
593 # Order for ISA/EISA devices is important here
594
595 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
596 device ce
597 device cp
598 device cs # Crystal Semiconductor CS89x0 NIC
599 hint.cs.0.at="isa"
600 hint.cs.0.port="0x300"
601 device ctau
602 hint.ctau.0.at="isa"
603 hint.ctau.0.port="0x240"
604 hint.ctau.0.irq="15"
605 hint.ctau.0.drq="7"
606 #options NETGRAPH_CRONYX # Enable NETGRAPH support for Cronyx adapter(s)
607 device ed # NE[12]000, SMC Ultra, 3c503, DS8390 cards
608 options ED_3C503
609 options ED_HPP
610 options ED_SIC
611 hint.ed.0.at="isa"
612 hint.ed.0.port="0x280"
613 hint.ed.0.irq="5"
614 hint.ed.0.maddr="0xd8000"
615 device ie # EtherExpress 8/16, 3C507, StarLAN 10 etc.
616 # Hints only required for Starlan
617 hint.ie.2.at="isa"
618 hint.ie.2.port="0x300"
619 hint.ie.2.irq="5"
620 hint.ie.2.maddr="0xd0000"
621 device ipw # Intel 2100 wireless NICs.
622 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
623 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
624 # Hint for the i386-only ISA front-end of le(4).
625 hint.le.0.at="isa"
626 hint.le.0.port="0x280"
627 hint.le.0.irq="10"
628 hint.le.0.drq="0"
629 device mlx4ib # Mellanox ConnectX HCA InfiniBand
630 device mlxen # Mellanox ConnectX HCA Ethernet
631 device mthca # Mellanox HCA InfiniBand
632 device nfe # nVidia nForce MCP on-board Ethernet
633 device sbni
634 hint.sbni.0.at="isa"
635 hint.sbni.0.port="0x210"
636 hint.sbni.0.irq="0xefdead"
637 hint.sbni.0.flags="0"
638 device vmx # VMware VMXNET3 Ethernet
639 device wl
640 hint.wl.0.at="isa"
641 hint.wl.0.port="0x300"
642 options WLCACHE # enables the signal-strength cache
643 options WLDEBUG # enables verbose debugging output
644 device wpi # Intel 3945ABG wireless NICs.
645
646 # IEEE 802.11 adapter firmware modules
647
648 # Intel PRO/Wireless 2100 firmware:
649 # ipwfw: BSS/IBSS/monitor mode firmware
650 # ipwbssfw: BSS mode firmware
651 # ipwibssfw: IBSS mode firmware
652 # ipwmonitorfw: Monitor mode firmware
653 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
654 # iwifw: BSS/IBSS/monitor mode firmware
655 # iwibssfw: BSS mode firmware
656 # iwiibssfw: IBSS mode firmware
657 # iwimonitorfw: Monitor mode firmware
658 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
659 # iwnfw: Single module to support all devices
660 # iwn1000fw: Specific module for the 1000 only
661 # iwn105fw: Specific module for the 105 only
662 # iwn135fw: Specific module for the 135 only
663 # iwn2000fw: Specific module for the 2000 only
664 # iwn2030fw: Specific module for the 2030 only
665 # iwn4965fw: Specific module for the 4965 only
666 # iwn5000fw: Specific module for the 5000 only
667 # iwn5150fw: Specific module for the 5150 only
668 # iwn6000fw: Specific module for the 6000 only
669 # iwn6000g2afw: Specific module for the 6000g2a only
670 # iwn6000g2bfw: Specific module for the 6000g2b only
671 # iwn6050fw: Specific module for the 6050 only
672 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
673
674 device iwifw
675 device iwibssfw
676 device iwiibssfw
677 device iwimonitorfw
678 device ipwfw
679 device ipwbssfw
680 device ipwibssfw
681 device ipwmonitorfw
682 device iwnfw
683 device iwn1000fw
684 device iwn105fw
685 device iwn135fw
686 device iwn2000fw
687 device iwn2030fw
688 device iwn4965fw
689 device iwn5000fw
690 device iwn5150fw
691 device iwn6000fw
692 device iwn6000g2afw
693 device iwn6000g2bfw
694 device iwn6050fw
695 device wpifw
696
697 #
698 # ATA raid adapters
699 #
700 device pst
701
702 #
703 # Areca 11xx and 12xx series of SATA II RAID controllers.
704 # CAM is required.
705 #
706 device arcmsr # Areca SATA II RAID
707
708 #
709 # 3ware 9000 series PATA/SATA RAID controller driver and options.
710 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
711 #
712 options TWA_DEBUG # 0-10; 10 prints the most messages.
713 options TWA_FLASH_FIRMWARE # firmware image bundled when defined.
714 device twa # 3ware 9000 series PATA/SATA RAID
715
716 #
717 # SCSI host adapters:
718 #
719 # ncv: NCR 53C500 based SCSI host adapters.
720 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
721 # stg: TMC 18C30, 18C50 based SCSI host adapters.
722
723 device ncv
724 device nsp
725 device stg
726 hint.stg.0.at="isa"
727 hint.stg.0.port="0x140"
728 hint.stg.0.port="11"
729
730 #
731 # Adaptec FSA RAID controllers, including integrated DELL controllers,
732 # the Dell PERC 2/QC and the HP NetRAID-4M
733 device aac
734 device aacp # SCSI Passthrough interface (optional, CAM required)
735
736 #
737 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
738 device aacraid # Container interface, CAM required
739
740 #
741 # Highpoint RocketRAID 27xx.
742 device hpt27xx
743
744 #
745 # Highpoint RocketRAID 182x.
746 device hptmv
747
748 #
749 # Highpoint DC7280 and R750.
750 device hptnr
751
752 #
753 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
754 # RR2210, RR174x, RR2522, RR231x, RR230x.
755 device hptrr
756
757 #
758 # Highpoint RocketRaid 3xxx series SATA RAID
759 device hptiop
760
761 #
762 # IBM (now Adaptec) ServeRAID controllers
763 device ips
764
765 #
766 # Intel C600 (Patsburg) integrated SAS controller
767 device isci
768 options ISCI_LOGGING # enable debugging in isci HAL
769
770 #
771 # NVM Express (NVMe) support
772 device nvme # base NVMe driver
773 device nvd # expose NVMe namespaces as disks, depends on nvme
774
775 #
776 # PMC-Sierra SAS/SATA controller
777 device pmspcv
778 #
779 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
780 # it's tested on a big-endian machine
781 #
782 device safe # SafeNet 1141
783 options SAFE_DEBUG # enable debugging support: hw.safe.debug
784 options SAFE_RNDTEST # enable rndtest support
785
786 #
787 # glxiic is an I2C driver for the AMD Geode LX CS5536 System Management Bus
788 # controller. Requires 'device iicbus'.
789 #
790 device glxiic # AMD Geode LX CS5536 System Management Bus
791
792 #
793 # glxsb is a driver for the Security Block in AMD Geode LX processors.
794 # Requires 'device crypto'.
795 #
796 device glxsb # AMD Geode LX Security Block
797
798 #
799 # VirtIO support
800 #
801 # The virtio entry provides a generic bus for use by the device drivers.
802 # It must be combined with an interface that communicates with the host.
803 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
804 # only has support for PCI. Therefore, virtio_pci must be statically
805 # compiled in or loaded as a module for the device drivers to function.
806 #
807 device virtio # Generic VirtIO bus (required)
808 device virtio_pci # VirtIO PCI Interface
809 device vtnet # VirtIO Ethernet device
810 device virtio_blk # VirtIO Block device
811 device virtio_scsi # VirtIO SCSI device
812 device virtio_balloon # VirtIO Memory Balloon device
813 device virtio_random # VirtIO Entropy device
814 device virtio_console # VirtIO Console device
815
816 device hyperv # HyperV drivers
817
818 #####################################################################
819
820 #
821 # Miscellaneous hardware:
822 #
823 # apm: Laptop Advanced Power Management (experimental)
824 # ipmi: Intelligent Platform Management Interface
825 # smapi: System Management Application Program Interface driver
826 # smbios: DMI/SMBIOS entry point
827 # vpd: Vital Product Data kernel interface
828 # pmtimer: Adjust system timer at wakeup time
829 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
830 # spic: Sony Programmable I/O controller (VAIO notebooks)
831 # asmc: Apple System Management Controller
832 # si: Specialix International SI/XIO or SX intelligent serial card driver
833 # tpm: Trusted Platform Module
834
835 # Notes on APM
836 # The flags takes the following meaning for apm0:
837 # 0x0020 Statclock is broken.
838
839 # Notes on the Specialix SI/XIO driver:
840 # The host card is memory, not IO mapped.
841 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
842 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
843 # The cards can use an IRQ of 11, 12 or 15.
844
845 # Notes on the Sony Programmable I/O controller
846 # This is a temporary driver that should someday be replaced by something
847 # that hooks into the ACPI layer. The device is hooked to the PIIX4's
848 # General Device 10 decoder, which means you have to fiddle with PCI
849 # registers to map it in, even though it is otherwise treated here as
850 # an ISA device. At the moment, the driver polls, although the device
851 # is capable of generating interrupts. It largely undocumented.
852 # The port location in the hint is where you WANT the device to be
853 # mapped. 0x10a0 seems to be traditional. At the moment the jogdial
854 # is the only thing truly supported, but apparently a fair percentage
855 # of the Vaio extra features are controlled by this device.
856
857 device apm
858 hint.apm.0.flags="0x20"
859 device ipmi
860 device smapi
861 device smbios
862 device vpd
863 device pmtimer
864 device pbio
865 hint.pbio.0.at="isa"
866 hint.pbio.0.port="0x360"
867 device spic
868 hint.spic.0.at="isa"
869 hint.spic.0.port="0x10a0"
870 device asmc
871 device si
872 device tpm
873 device padlock_rng # VIA Padlock RNG
874 device rdrand_rng # Intel Bull Mountain RNG
875 device aesni # AES-NI OpenCrypto module
876
877 #
878 # Laptop/Notebook options:
879 #
880 # See also:
881 # apm under `Miscellaneous hardware'
882 # above.
883
884 # For older notebooks that signal a powerfail condition (external
885 # power supply dropped, or battery state low) by issuing an NMI:
886
887 options POWERFAIL_NMI # make it beep instead of panicing
888
889 #
890 # I2C Bus
891 #
892 # Philips i2c bus support is provided by the `iicbus' device.
893 #
894 # Supported interfaces:
895 # pcf Philips PCF8584 ISA-bus controller
896 #
897 device pcf
898 hint.pcf.0.at="isa"
899 hint.pcf.0.port="0x320"
900 hint.pcf.0.irq="5"
901
902 #
903 # Hardware watchdog timers:
904 #
905 # ichwd: Intel ICH watchdog timer
906 # amdsbwd: AMD SB7xx watchdog timer
907 # viawd: VIA south bridge watchdog timer
908 # wbwd: Winbond watchdog timer
909 #
910 device ichwd
911 device amdsbwd
912 device viawd
913 device wbwd
914
915 #
916 # Temperature sensors:
917 #
918 # coretemp: on-die sensor on Intel Core and newer CPUs
919 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
920 #
921 device coretemp
922 device amdtemp
923
924 #
925 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
926 # microcode update feature.
927 #
928 device cpuctl
929
930 #
931 # System Management Bus (SMB)
932 #
933 options ENABLE_ALART # Control alarm on Intel intpm driver
934
935 #
936 # Set the number of PV entries per process. Increasing this can
937 # stop panics related to heavy use of shared memory. However, that can
938 # (combined with large amounts of physical memory) cause panics at
939 # boot time due the kernel running out of VM space.
940 #
941 # If you're tweaking this, you might also want to increase the sysctls
942 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
943 #
944 # The value below is the one more than the default.
945 #
946 options PMAP_SHPGPERPROC=201
947
948 #
949 # Change the size of the kernel virtual address space. Due to
950 # constraints in loader(8) on i386, this must be a multiple of 4.
951 # 256 = 1 GB of kernel address space. Increasing this also causes
952 # a reduction of the address space in user processes. 512 splits
953 # the 4GB cpu address space in half (2GB user, 2GB kernel). For PAE
954 # kernels, the value will need to be double non-PAE. A value of 1024
955 # for PAE kernels is necessary to split the address space in half.
956 # This will likely need to be increased to handle memory sizes >4GB.
957 # PAE kernels default to a value of 512.
958 #
959 options KVA_PAGES=260
960
961 #
962 # Number of initial kernel page table pages used for early bootstrap.
963 # This number should include enough pages to map the kernel, any
964 # modules or other data loaded with the kernel by the loader, and data
965 # structures allocated before the VM system is initialized such as the
966 # vm_page_t array. Each page table page maps 4MB (2MB with PAE).
967 #
968 options NKPT=31
969
970
971 #####################################################################
972 # ABI Emulation
973
974 # Enable iBCS2 runtime support for SCO and ISC binaries
975 #options IBCS2
976
977 # Emulate spx device for client side of SVR3 local X interface
978 options SPX_HACK
979
980 # Enable 32-bit runtime support for CloudABI binaries.
981 options COMPAT_CLOUDABI32
982
983 # Enable Linux ABI emulation
984 options COMPAT_LINUX
985
986 # Enable i386 a.out binary support
987 options COMPAT_AOUT
988
989 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
990 # and PSEUDOFS)
991 options LINPROCFS
992
993 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
994 # and PSEUDOFS)
995 options LINSYSFS
996
997 #
998 # SysVR4 ABI emulation
999 #
1000 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
1001 # a KLD module.
1002 # The STREAMS network emulation code can also be compiled statically or as a
1003 # module. If loaded as a module, it must be loaded before the svr4 module
1004 # (the /usr/sbin/svr4 script does this for you). If compiling statically,
1005 # the `streams' device must be configured into any kernel which also
1006 # specifies COMPAT_SVR4. It is possible to have a statically-configured
1007 # STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
1008 # script understands that it doesn't need to load the `streams' module under
1009 # those circumstances.
1010 # Caveat: At this time, `options KTRACE' is required for the svr4 emulator
1011 # (whether static or dynamic).
1012 #
1013 options COMPAT_SVR4 # build emulator statically
1014 options DEBUG_SVR4 # enable verbose debugging
1015 device streams # STREAMS network driver (required for svr4).
1016
1017 # Enable NDIS binary driver support
1018 options NDISAPI
1019 device ndis
1020
1021
1022 #####################################################################
1023 # VM OPTIONS
1024
1025 # Disable the 4 MByte page PSE CPU feature. The PSE feature allows the
1026 # kernel to use 4 MByte pages to map the kernel instead of 4k pages.
1027 # This saves on the amount of memory needed for page tables needed to
1028 # map the kernel. You should only disable this feature as a temporary
1029 # workaround if you are having problems with it enabled.
1030 #
1031 #options DISABLE_PSE
1032
1033 # Disable the global pages PGE CPU feature. The PGE feature allows pages
1034 # to be marked with the PG_G bit. TLB entries for these pages are not
1035 # flushed from the cache when %cr3 is reloaded. This can make context
1036 # switches less expensive. You should only disable this feature as a
1037 # temporary workaround if you are having problems with it enabled.
1038 #
1039 #options DISABLE_PG_G
1040
1041 # KSTACK_PAGES is the number of memory pages to assign to the kernel
1042 # stack of each thread.
1043
1044 options KSTACK_PAGES=3
1045
1046 # Enable detailed accounting by the PV entry allocator.
1047
1048 options PV_STATS
1049
1050 #####################################################################
1051
1052 # More undocumented options for linting.
1053 # Note that documenting these are not considered an affront.
1054
1055 options FB_INSTALL_CDEV # install a CDEV entry in /dev
1056
1057 options I586_PMC_GUPROF=0x70000
1058 options KBDIO_DEBUG=2
1059 options KBD_MAXRETRY=4
1060 options KBD_MAXWAIT=6
1061 options KBD_RESETDELAY=201
1062
1063 options PSM_DEBUG=1
1064
1065 options TIMER_FREQ=((14318182+6)/12)
1066
1067 options VM_KMEM_SIZE
1068 options VM_KMEM_SIZE_MAX
1069 options VM_KMEM_SIZE_SCALE
1070
1071
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