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 # $FreeBSD$
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 #####################################################################
226 # NETWORKING OPTIONS
227
228 #
229 # DEVICE_POLLING adds support for mixed interrupt-polling handling
230 # of network device drivers, which has significant benefits in terms
231 # of robustness to overloads and responsivity, as well as permitting
232 # accurate scheduling of the CPU time between kernel network processing
233 # and other activities. The drawback is a moderate (up to 1/HZ seconds)
234 # potential increase in response times.
235 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
236 # to achieve smoother behaviour.
237 # Additionally, you can enable/disable polling at runtime with help of
238 # the ifconfig(8) utility, and select the CPU fraction reserved to
239 # userland with the sysctl variable kern.polling.user_frac
240 # (default 50, range 0..100).
241 #
242 # Not all device drivers support this mode of operation at the time of
243 # this writing. See polling(4) for more details.
244
245 options DEVICE_POLLING
246
247 # BPF_JITTER adds support for BPF just-in-time compiler.
248
249 options BPF_JITTER
250
251 # OpenFabrics Enterprise Distribution (Infiniband).
252 options OFED
253 options OFED_DEBUG_INIT
254
255 # Sockets Direct Protocol
256 options SDP
257 options SDP_DEBUG
258
259 # IP over Infiniband
260 options IPOIB
261 options IPOIB_DEBUG
262 options IPOIB_CM
263
264
265 #####################################################################
266 # CLOCK OPTIONS
267
268 # Provide read/write access to the memory in the clock chip.
269 device nvram # Access to rtc cmos via /dev/nvram
270
271
272 #####################################################################
273 # MISCELLANEOUS DEVICES AND OPTIONS
274
275 device speaker #Play IBM BASIC-style noises out your speaker
276 envvar hint.speaker.0.at="isa"
277 envvar hint.speaker.0.port="0x61"
278
279
280 #####################################################################
281 # HARDWARE BUS CONFIGURATION
282
283 #
284 # ISA bus
285 #
286 device isa
287
288 #
289 # Options for `isa':
290 #
291 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
292 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
293 # This option breaks suspend/resume on some portables.
294 #
295 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
296 # interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
297 # Automatic EOI is documented not to work for for the slave with the
298 # original i8259A, but it works for some clones and some integrated
299 # versions.
300 #
301 # MAXMEM specifies the amount of RAM on the machine; if this is not
302 # specified, FreeBSD will first read the amount of memory from the CMOS
303 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
304 # depending on the BIOS. If the BIOS reports 64MB, a memory probe will
305 # then attempt to detect the installed amount of RAM. If this probe
306 # fails to detect >64MB RAM you will have to use the MAXMEM option.
307 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
308 # be 131072 (128 * 1024).
309 #
310 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
311 # reset the CPU for reboot. This is needed on some systems with broken
312 # keyboard controllers.
313
314 options AUTO_EOI_1
315 #options AUTO_EOI_2
316
317 options MAXMEM=(128*1024)
318 #options BROKEN_KEYBOARD_RESET
319
320 #
321 # AGP GART support
322 device agp
323
324 # AGP debugging.
325 options AGP_DEBUG
326
327
328 #####################################################################
329 # HARDWARE DEVICE CONFIGURATION
330
331 # To include support for VGA VESA video modes
332 options VESA
333
334 # Turn on extra debugging checks and output for VESA support.
335 options VESA_DEBUG
336
337 device dpms # DPMS suspend & resume via VESA BIOS
338
339 # x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
340 options X86BIOS
341
342 #
343 # Hints for the non-optional Numeric Processing eXtension driver.
344 envvar hint.npx.0.flags="0x0"
345 envvar hint.npx.0.irq="13"
346
347 #
348 # `flags' for npx0:
349 # 0x01 don't use the npx registers to optimize bcopy.
350 # 0x02 don't use the npx registers to optimize bzero.
351 # 0x04 don't use the npx registers to optimize copyin or copyout.
352 # The npx registers are normally used to optimize copying and zeroing when
353 # all of the following conditions are satisfied:
354 # I586_CPU is an option
355 # the cpu is an i586 (perhaps not a Pentium)
356 # the probe for npx0 succeeds
357 # INT 16 exception handling works.
358 # Then copying and zeroing using the npx registers is normally 30-100% faster.
359 # The flags can be used to control cases where it doesn't work or is slower.
360 # Setting them at boot time using hints works right (the optimizations
361 # are not used until later in the bootstrap when npx0 is attached).
362 # Flag 0x08 automatically disables the i586 optimized routines.
363 #
364
365 #
366 # Optional devices:
367 #
368
369 # PS/2 mouse
370 device psm
371 envvar hint.psm.0.at="atkbdc"
372 envvar hint.psm.0.irq="12"
373
374 # Options for psm:
375 options PSM_HOOKRESUME #hook the system resume event, useful
376 #for some laptops
377 options PSM_RESETAFTERSUSPEND #reset the device at the resume event
378
379 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
380 device atkbdc
381 envvar hint.atkbdc.0.at="isa"
382 envvar hint.atkbdc.0.port="0x060"
383
384 # The AT keyboard
385 device atkbd
386 envvar hint.atkbd.0.at="atkbdc"
387 envvar hint.atkbd.0.irq="1"
388
389 # Options for atkbd:
390 options ATKBD_DFLT_KEYMAP # specify the built-in keymap
391 makeoptions ATKBD_DFLT_KEYMAP=fr.dvorak
392
393 # `flags' for atkbd:
394 # 0x01 Force detection of keyboard, else we always assume a keyboard
395 # 0x02 Don't reset keyboard, useful for some newer ThinkPads
396 # 0x03 Force detection and avoid reset, might help with certain
397 # dockingstations
398 # 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
399
400 # Video card driver for VGA adapters.
401 device vga
402 envvar hint.vga.0.at="isa"
403
404 # Options for vga:
405 # Try the following option if the mouse pointer is not drawn correctly
406 # or font does not seem to be loaded properly. May cause flicker on
407 # some systems.
408 options VGA_ALT_SEQACCESS
409
410 # If you can dispense with some vga driver features, you may want to
411 # use the following options to save some memory.
412 #options VGA_NO_FONT_LOADING # don't save/load font
413 #options VGA_NO_MODE_CHANGE # don't change video modes
414
415 # Older video cards may require this option for proper operation.
416 options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
417
418 # The following option probably won't work with the LCD displays.
419 options VGA_WIDTH90 # support 90 column modes
420
421 # Debugging.
422 options VGA_DEBUG
423
424 # vt(4) drivers.
425 device vt_vga
426 device vt_vbefb
427
428 # Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
429 device s3pci
430
431 # 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
432 # the /dev/3dfx0 device to work with glide implementations. This should get
433 # linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
434 # the tdfx DRI module from XFree86 and is completely unrelated.
435 #
436 # To enable Linuxulator support, one must also include COMPAT_LINUX in the
437 # config as well. The other option is to load both as modules.
438
439 device tdfx # Enable 3Dfx Voodoo support
440 device tdfx_linux # Enable Linuxulator support
441
442 options IOMMU # Enable IOMMU support
443
444 #
445 # ACPI support using the Intel ACPI Component Architecture reference
446 # implementation.
447 #
448 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
449 # kernel environment variables to select initial debugging levels for the
450 # Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER
451 # defined when it is built).
452
453 device acpi
454 options ACPI_DEBUG
455
456 # ACPI WMI Mapping driver
457 device acpi_wmi
458
459 # ACPI Asus Extras (LCD backlight/brightness, video output, etc.)
460 device acpi_asus
461
462 # ACPI Fujitsu Extras (Buttons)
463 device acpi_fujitsu
464
465 # ACPI extras driver for HP laptops
466 device acpi_hp
467
468 # ACPI extras driver for IBM laptops
469 device acpi_ibm
470
471 # ACPI Panasonic Extras (LCD backlight/brightness, video output, etc.)
472 device acpi_panasonic
473
474 # ACPI Sony extra (LCD brightness)
475 device acpi_sony
476
477 # ACPI Toshiba Extras (LCD backlight/brightness, video output, etc.)
478 device acpi_toshiba
479
480 # ACPI Video Extensions (LCD backlight/brightness, video output, etc.)
481 device acpi_video
482
483 # ACPI Docking Station
484 device acpi_dock
485
486 # ACPI ASOC ATK0110 ASUSTeK AI Booster (voltage, temperature and fan sensors)
487 device aibs
488
489 # The cpufreq(4) driver provides support for non-ACPI CPU frequency control
490 device cpufreq
491
492 #
493 # Network interfaces:
494 #
495
496 # bxe: Broadcom NetXtreme II (BCM5771X/BCM578XX) PCIe 10Gb Ethernet
497 # adapters.
498 # ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
499 # with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
500 # NETGRAPH_CRONYX is configured)
501 # cp: Cronyx Tau-PCI sync single/dual/four port
502 # V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
503 # serial adaptor (requires sppp (default), or NETGRAPH if
504 # NETGRAPH_CRONYX is configured)
505 # igc: Intel I225 2.5G Ethernet adapter
506 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
507 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
508 # Requires the iwi firmware module
509 # iwn: Intel Wireless WiFi Link 1000/105/135/2000/4965/5000/6000/6050 abgn
510 # 802.11 network adapters
511 # Requires the iwn firmware module
512 # mthca: Mellanox HCA InfiniBand
513 # mlx4ib: Mellanox ConnectX HCA InfiniBand
514 # mlx4en: Mellanox ConnectX HCA Ethernet
515 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
516 # sbni: Granch SBNI12-xx ISA and PCI adapters
517 # vmx: VMware VMXNET3 Ethernet (BSD open source)
518 # wpi: Intel 3945ABG Wireless LAN controller
519 # Requires the wpi firmware module
520
521 # Order for ISA/EISA devices is important here
522
523 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
524 device ce
525 device cp
526 envvar hint.cs.0.at="isa"
527 envvar hint.cs.0.port="0x300"
528 #options NETGRAPH_CRONYX # Enable NETGRAPH support for Cronyx adapter(s)
529 options ED_3C503
530 options ED_HPP
531 options ED_SIC
532 envvar hint.ed.0.at="isa"
533 envvar hint.ed.0.port="0x280"
534 envvar hint.ed.0.irq="5"
535 envvar hint.ed.0.maddr="0xd8000"
536 device igc # Intel I225 2.5G Ethernet
537 device ipw # Intel 2100 wireless NICs.
538 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
539 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
540 # Hint for the i386-only ISA front-end of le(4).
541 envvar hint.le.0.at="isa"
542 envvar hint.le.0.port="0x280"
543 envvar hint.le.0.irq="10"
544 envvar hint.le.0.drq="0"
545 device mthca # Mellanox HCA InfiniBand
546 device mlx4 # Shared code module between IB and Ethernet
547 device mlx4ib # Mellanox ConnectX HCA InfiniBand
548 device mlx4en # Mellanox ConnectX HCA Ethernet
549 device nfe # nVidia nForce MCP on-board Ethernet
550 device sbni
551 envvar hint.sbni.0.at="isa"
552 envvar hint.sbni.0.port="0x210"
553 envvar hint.sbni.0.irq="0xefdead"
554 envvar hint.sbni.0.flags="0"
555 device vmx # VMware VMXNET3 Ethernet
556 device wpi # Intel 3945ABG wireless NICs.
557
558 # IEEE 802.11 adapter firmware modules
559
560 # Intel PRO/Wireless 2100 firmware:
561 # ipwfw: BSS/IBSS/monitor mode firmware
562 # ipwbssfw: BSS mode firmware
563 # ipwibssfw: IBSS mode firmware
564 # ipwmonitorfw: Monitor mode firmware
565 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
566 # iwifw: BSS/IBSS/monitor mode firmware
567 # iwibssfw: BSS mode firmware
568 # iwiibssfw: IBSS mode firmware
569 # iwimonitorfw: Monitor mode firmware
570 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
571 # iwnfw: Single module to support all devices
572 # iwn1000fw: Specific module for the 1000 only
573 # iwn105fw: Specific module for the 105 only
574 # iwn135fw: Specific module for the 135 only
575 # iwn2000fw: Specific module for the 2000 only
576 # iwn2030fw: Specific module for the 2030 only
577 # iwn4965fw: Specific module for the 4965 only
578 # iwn5000fw: Specific module for the 5000 only
579 # iwn5150fw: Specific module for the 5150 only
580 # iwn6000fw: Specific module for the 6000 only
581 # iwn6000g2afw: Specific module for the 6000g2a only
582 # iwn6000g2bfw: Specific module for the 6000g2b only
583 # iwn6050fw: Specific module for the 6050 only
584 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
585
586 device iwifw
587 device iwibssfw
588 device iwiibssfw
589 device iwimonitorfw
590 device ipwfw
591 device ipwbssfw
592 device ipwibssfw
593 device ipwmonitorfw
594 device iwnfw
595 device iwn1000fw
596 device iwn105fw
597 device iwn135fw
598 device iwn2000fw
599 device iwn2030fw
600 device iwn4965fw
601 device iwn5000fw
602 device iwn5150fw
603 device iwn6000fw
604 device iwn6000g2afw
605 device iwn6000g2bfw
606 device iwn6050fw
607 device wpifw
608
609 #
610 # Non-Transparent Bridge (NTB) drivers
611 #
612 device if_ntb # Virtual NTB network interface
613 device ntb_transport # NTB packet transport driver
614 device ntb # NTB hardware interface
615 device ntb_hw_amd # AMD NTB hardware driver
616 device ntb_hw_intel # Intel NTB hardware driver
617 device ntb_hw_plx # PLX NTB hardware driver
618
619 #
620 # ATA raid adapters
621 #
622 device pst
623
624 #
625 # Areca 11xx and 12xx series of SATA II RAID controllers.
626 # CAM is required.
627 #
628 device arcmsr # Areca SATA II RAID
629
630 #
631 # 3ware 9000 series PATA/SATA RAID controller driver and options.
632 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
633 #
634 options TWA_DEBUG # 0-10; 10 prints the most messages.
635 device twa # 3ware 9000 series PATA/SATA RAID
636
637 #
638 # Adaptec FSA RAID controllers, including integrated DELL controllers,
639 # the Dell PERC 2/QC and the HP NetRAID-4M
640 device aac
641 device aacp # SCSI Passthrough interface (optional, CAM required)
642
643 #
644 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
645 device aacraid # Container interface, CAM required
646
647 #
648 # Highpoint RocketRAID 27xx.
649 device hpt27xx
650
651 #
652 # Highpoint RocketRAID 182x.
653 device hptmv
654
655 #
656 # Highpoint DC7280 and R750.
657 device hptnr
658
659 #
660 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
661 # RR2210, RR174x, RR2522, RR231x, RR230x.
662 device hptrr
663
664 #
665 # Highpoint RocketRaid 3xxx series SATA RAID
666 device hptiop
667
668 #
669 # Intel integrated Memory Controller (iMC) SMBus controller
670 # Sandybridge-Xeon, Ivybridge-Xeon, Haswell-Xeon, Broadwell-Xeon
671 device imcsmb
672
673 #
674 # IBM (now Adaptec) ServeRAID controllers
675 device ips
676
677 #
678 # Intel C600 (Patsburg) integrated SAS controller
679 device isci
680 options ISCI_LOGGING # enable debugging in isci HAL
681
682 #
683 # NVM Express (NVMe) support
684 device nvme # base NVMe driver
685 device nvd # expose NVMe namespaces as disks, depends on nvme
686
687 #
688 # Intel Volume Management Device (VMD) support
689 device vmd
690
691 #
692 # PMC-Sierra SAS/SATA controller
693 device pmspcv
694 #
695 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
696 # it's tested on a big-endian machine
697 #
698 device safe # SafeNet 1141
699 options SAFE_DEBUG # enable debugging support: hw.safe.debug
700 options SAFE_RNDTEST # enable rndtest support
701
702 #
703 # glxiic is an I2C driver for the AMD Geode LX CS5536 System Management Bus
704 # controller. Requires 'device iicbus'.
705 #
706 device glxiic # AMD Geode LX CS5536 System Management Bus
707
708 #
709 # glxsb is a driver for the Security Block in AMD Geode LX processors.
710 # Requires 'device crypto'.
711 #
712 device glxsb # AMD Geode LX Security Block
713
714 #
715 # VirtIO support
716 #
717 # The virtio entry provides a generic bus for use by the device drivers.
718 # It must be combined with an interface that communicates with the host.
719 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
720 # only has support for PCI. Therefore, virtio_pci must be statically
721 # compiled in or loaded as a module for the device drivers to function.
722 #
723 device virtio # Generic VirtIO bus (required)
724 device virtio_pci # VirtIO PCI Interface
725 device vtnet # VirtIO Ethernet device
726 device virtio_blk # VirtIO Block device
727 device virtio_scsi # VirtIO SCSI device
728 device virtio_balloon # VirtIO Memory Balloon device
729 device virtio_random # VirtIO Entropy device
730 device virtio_console # VirtIO Console device
731
732 # Linux KVM paravirtualization support
733 device kvm_clock # KVM paravirtual clock driver
734
735 options HYPERV
736 device hyperv # HyperV drivers
737
738 #####################################################################
739
740 #
741 # Miscellaneous hardware:
742 #
743 # ipmi: Intelligent Platform Management Interface
744 # smapi: System Management Application Program Interface driver
745 # smbios: DMI/SMBIOS entry point
746 # vpd: Vital Product Data kernel interface
747 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
748 # asmc: Apple System Management Controller
749 # si: Specialix International SI/XIO or SX intelligent serial card driver
750 # tpm: Trusted Platform Module
751
752 # Notes on the Specialix SI/XIO driver:
753 # The host card is memory, not IO mapped.
754 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
755 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
756 # The cards can use an IRQ of 11, 12 or 15.
757
758 # Notes on the Sony Programmable I/O controller
759 # This is a temporary driver that should someday be replaced by something
760 # that hooks into the ACPI layer. The device is hooked to the PIIX4's
761 # General Device 10 decoder, which means you have to fiddle with PCI
762 # registers to map it in, even though it is otherwise treated here as
763 # an ISA device. At the moment, the driver polls, although the device
764 # is capable of generating interrupts. It largely undocumented.
765 # The port location in the hint is where you WANT the device to be
766 # mapped. 0x10a0 seems to be traditional. At the moment the jogdial
767 # is the only thing truly supported, but apparently a fair percentage
768 # of the Vaio extra features are controlled by this device.
769
770 device ipmi
771 device smapi
772 device smbios
773 device vpd
774 device pbio
775 envvar hint.pbio.0.at="isa"
776 envvar hint.pbio.0.port="0x360"
777 device asmc
778 device tpm
779 device padlock_rng # VIA Padlock RNG
780 device rdrand_rng # Intel Bull Mountain RNG
781 device aesni # AES-NI OpenCrypto module
782 device ossl # OpenSSL OpenCrypto module
783
784 #
785 # Laptop/Notebook options:
786 #
787 # See also:
788 # apm under `Miscellaneous hardware'
789 # above.
790
791 device backlight
792
793 # For older notebooks that signal a powerfail condition (external
794 # power supply dropped, or battery state low) by issuing an NMI:
795
796 options POWERFAIL_NMI # make it beep instead of panicing
797
798 #
799 # I2C Bus
800 #
801 # Philips i2c bus support is provided by the `iicbus' device.
802 #
803 # Supported interfaces:
804 # pcf Philips PCF8584 ISA-bus controller
805 #
806 device pcf
807 envvar hint.pcf.0.at="isa"
808 envvar hint.pcf.0.port="0x320"
809 envvar hint.pcf.0.irq="5"
810
811 #
812 # Hardware watchdog timers:
813 #
814 # ichwd: Intel ICH watchdog timer
815 # amdsbwd: AMD SB7xx watchdog timer
816 # viawd: VIA south bridge watchdog timer
817 # wbwd: Winbond watchdog timer
818 # itwd: ITE Super I/O watchdog timer
819 #
820 device ichwd
821 device amdsbwd
822 device viawd
823 device wbwd
824 device itwd
825
826 #
827 # Temperature sensors:
828 #
829 # coretemp: on-die sensor on Intel Core and newer CPUs
830 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
831 #
832 device coretemp
833 device amdtemp
834
835 #
836 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
837 # microcode update feature.
838 #
839 device cpuctl
840
841 #
842 # SuperIO driver.
843 #
844 device superio
845
846 #
847 # System Management Bus (SMB)
848 #
849 options ENABLE_ALART # Control alarm on Intel intpm driver
850
851 #
852 # Set the number of PV entries per process. Increasing this can
853 # stop panics related to heavy use of shared memory. However, that can
854 # (combined with large amounts of physical memory) cause panics at
855 # boot time due the kernel running out of VM space.
856 #
857 # If you're tweaking this, you might also want to increase the sysctls
858 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
859 #
860 # The value below is the one more than the default.
861 #
862 options PMAP_SHPGPERPROC=201
863
864 #
865 # Number of initial kernel page table pages used for early bootstrap.
866 # This number should include enough pages to map the kernel, any
867 # modules or other data loaded with the kernel by the loader, and data
868 # structures allocated before the VM system is initialized such as the
869 # vm_page_t array. Each page table page maps 4MB (2MB with PAE).
870 #
871 options NKPT=31
872
873 #
874 # HID-over-I2C support
875 #
876 device iichid # HID-over-I2C support
877 options IICHID_DEBUG # Enable HID-over-I2C debug messages
878 options IICHID_SAMPLING # Workaround missing GPIO INTR support
879
880 #####################################################################
881 # ABI Emulation
882
883 # Enable (32-bit) a.out binary support
884 options COMPAT_AOUT
885
886 # Enable 32-bit runtime support for CloudABI binaries.
887 options COMPAT_CLOUDABI32
888
889 # Enable Linux ABI emulation
890 options COMPAT_LINUX
891
892 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
893 # and PSEUDOFS)
894 options LINPROCFS
895
896 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
897 # and PSEUDOFS)
898 options LINSYSFS
899
900 # Enable NDIS binary driver support
901 options NDISAPI
902 device ndis
903
904
905 #####################################################################
906 # VM OPTIONS
907
908 # KSTACK_PAGES is the number of memory pages to assign to the kernel
909 # stack of each thread.
910
911 options KSTACK_PAGES=5
912
913 # Enable detailed accounting by the PV entry allocator.
914
915 options PV_STATS
916
917 #####################################################################
918
919 # More undocumented options for linting.
920 # Note that documenting these are not considered an affront.
921
922 options FB_INSTALL_CDEV # install a CDEV entry in /dev
923
924 options I586_PMC_GUPROF=0x70000
925 options KBDIO_DEBUG=2
926 options KBD_MAXRETRY=4
927 options KBD_MAXWAIT=6
928 options KBD_RESETDELAY=201
929
930 options PSM_DEBUG=1
931
932 options TIMER_FREQ=((14318182+6)/12)
933
934 options VM_KMEM_SIZE
935 options VM_KMEM_SIZE_MAX
936 options VM_KMEM_SIZE_SCALE
937
938
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