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 # ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
506 # iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
507 # Requires the iwi firmware module
508 # iwn: Intel Wireless WiFi Link 1000/105/135/2000/4965/5000/6000/6050 abgn
509 # 802.11 network adapters
510 # Requires the iwn firmware module
511 # mthca: Mellanox HCA InfiniBand
512 # mlx4ib: Mellanox ConnectX HCA InfiniBand
513 # mlx4en: Mellanox ConnectX HCA Ethernet
514 # nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
515 # sbni: Granch SBNI12-xx ISA and PCI adapters
516 # vmx: VMware VMXNET3 Ethernet (BSD open source)
517 # wpi: Intel 3945ABG Wireless LAN controller
518 # Requires the wpi firmware module
519
520 # Order for ISA/EISA devices is important here
521
522 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
523 device ce
524 device cp
525 envvar hint.cs.0.at="isa"
526 envvar hint.cs.0.port="0x300"
527 #options NETGRAPH_CRONYX # Enable NETGRAPH support for Cronyx adapter(s)
528 options ED_3C503
529 options ED_HPP
530 options ED_SIC
531 envvar hint.ed.0.at="isa"
532 envvar hint.ed.0.port="0x280"
533 envvar hint.ed.0.irq="5"
534 envvar hint.ed.0.maddr="0xd8000"
535 device ipw # Intel 2100 wireless NICs.
536 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
537 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
538 # Hint for the i386-only ISA front-end of le(4).
539 envvar hint.le.0.at="isa"
540 envvar hint.le.0.port="0x280"
541 envvar hint.le.0.irq="10"
542 envvar hint.le.0.drq="0"
543 device mthca # Mellanox HCA InfiniBand
544 device mlx4 # Shared code module between IB and Ethernet
545 device mlx4ib # Mellanox ConnectX HCA InfiniBand
546 device mlx4en # Mellanox ConnectX HCA Ethernet
547 device nfe # nVidia nForce MCP on-board Ethernet
548 device sbni
549 envvar hint.sbni.0.at="isa"
550 envvar hint.sbni.0.port="0x210"
551 envvar hint.sbni.0.irq="0xefdead"
552 envvar hint.sbni.0.flags="0"
553 device vmx # VMware VMXNET3 Ethernet
554 device wpi # Intel 3945ABG wireless NICs.
555
556 # IEEE 802.11 adapter firmware modules
557
558 # Intel PRO/Wireless 2100 firmware:
559 # ipwfw: BSS/IBSS/monitor mode firmware
560 # ipwbssfw: BSS mode firmware
561 # ipwibssfw: IBSS mode firmware
562 # ipwmonitorfw: Monitor mode firmware
563 # Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
564 # iwifw: BSS/IBSS/monitor mode firmware
565 # iwibssfw: BSS mode firmware
566 # iwiibssfw: IBSS mode firmware
567 # iwimonitorfw: Monitor mode firmware
568 # Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
569 # iwnfw: Single module to support all devices
570 # iwn1000fw: Specific module for the 1000 only
571 # iwn105fw: Specific module for the 105 only
572 # iwn135fw: Specific module for the 135 only
573 # iwn2000fw: Specific module for the 2000 only
574 # iwn2030fw: Specific module for the 2030 only
575 # iwn4965fw: Specific module for the 4965 only
576 # iwn5000fw: Specific module for the 5000 only
577 # iwn5150fw: Specific module for the 5150 only
578 # iwn6000fw: Specific module for the 6000 only
579 # iwn6000g2afw: Specific module for the 6000g2a only
580 # iwn6000g2bfw: Specific module for the 6000g2b only
581 # iwn6050fw: Specific module for the 6050 only
582 # wpifw: Intel 3945ABG Wireless LAN Controller firmware
583
584 device iwifw
585 device iwibssfw
586 device iwiibssfw
587 device iwimonitorfw
588 device ipwfw
589 device ipwbssfw
590 device ipwibssfw
591 device ipwmonitorfw
592 device iwnfw
593 device iwn1000fw
594 device iwn105fw
595 device iwn135fw
596 device iwn2000fw
597 device iwn2030fw
598 device iwn4965fw
599 device iwn5000fw
600 device iwn5150fw
601 device iwn6000fw
602 device iwn6000g2afw
603 device iwn6000g2bfw
604 device iwn6050fw
605 device wpifw
606
607 #
608 # Non-Transparent Bridge (NTB) drivers
609 #
610 device if_ntb # Virtual NTB network interface
611 device ntb_transport # NTB packet transport driver
612 device ntb # NTB hardware interface
613 device ntb_hw_amd # AMD NTB hardware driver
614 device ntb_hw_intel # Intel NTB hardware driver
615 device ntb_hw_plx # PLX NTB hardware driver
616
617 #
618 # ATA raid adapters
619 #
620 device pst
621
622 #
623 # Areca 11xx and 12xx series of SATA II RAID controllers.
624 # CAM is required.
625 #
626 device arcmsr # Areca SATA II RAID
627
628 #
629 # 3ware 9000 series PATA/SATA RAID controller driver and options.
630 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
631 #
632 options TWA_DEBUG # 0-10; 10 prints the most messages.
633 device twa # 3ware 9000 series PATA/SATA RAID
634
635 #
636 # Adaptec FSA RAID controllers, including integrated DELL controllers,
637 # the Dell PERC 2/QC and the HP NetRAID-4M
638 device aac
639 device aacp # SCSI Passthrough interface (optional, CAM required)
640
641 #
642 # Adaptec by PMC RAID controllers, Series 6/7/8 and upcoming families
643 device aacraid # Container interface, CAM required
644
645 #
646 # Highpoint RocketRAID 27xx.
647 device hpt27xx
648
649 #
650 # Highpoint RocketRAID 182x.
651 device hptmv
652
653 #
654 # Highpoint DC7280 and R750.
655 device hptnr
656
657 #
658 # Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
659 # RR2210, RR174x, RR2522, RR231x, RR230x.
660 device hptrr
661
662 #
663 # Highpoint RocketRaid 3xxx series SATA RAID
664 device hptiop
665
666 #
667 # Intel integrated Memory Controller (iMC) SMBus controller
668 # Sandybridge-Xeon, Ivybridge-Xeon, Haswell-Xeon, Broadwell-Xeon
669 device imcsmb
670
671 #
672 # IBM (now Adaptec) ServeRAID controllers
673 device ips
674
675 #
676 # Intel C600 (Patsburg) integrated SAS controller
677 device isci
678 options ISCI_LOGGING # enable debugging in isci HAL
679
680 #
681 # NVM Express (NVMe) support
682 device nvme # base NVMe driver
683 device nvd # expose NVMe namespaces as disks, depends on nvme
684
685 #
686 # PMC-Sierra SAS/SATA controller
687 device pmspcv
688 #
689 # SafeNet crypto driver: can be moved to the MI NOTES as soon as
690 # it's tested on a big-endian machine
691 #
692 device safe # SafeNet 1141
693 options SAFE_DEBUG # enable debugging support: hw.safe.debug
694 options SAFE_RNDTEST # enable rndtest support
695
696 #
697 # glxiic is an I2C driver for the AMD Geode LX CS5536 System Management Bus
698 # controller. Requires 'device iicbus'.
699 #
700 device glxiic # AMD Geode LX CS5536 System Management Bus
701
702 #
703 # glxsb is a driver for the Security Block in AMD Geode LX processors.
704 # Requires 'device crypto'.
705 #
706 device glxsb # AMD Geode LX Security Block
707
708 #
709 # VirtIO support
710 #
711 # The virtio entry provides a generic bus for use by the device drivers.
712 # It must be combined with an interface that communicates with the host.
713 # Multiple such interfaces defined by the VirtIO specification. FreeBSD
714 # only has support for PCI. Therefore, virtio_pci must be statically
715 # compiled in or loaded as a module for the device drivers to function.
716 #
717 device virtio # Generic VirtIO bus (required)
718 device virtio_pci # VirtIO PCI Interface
719 device vtnet # VirtIO Ethernet device
720 device virtio_blk # VirtIO Block device
721 device virtio_scsi # VirtIO SCSI device
722 device virtio_balloon # VirtIO Memory Balloon device
723 device virtio_random # VirtIO Entropy device
724 device virtio_console # VirtIO Console device
725
726 device hyperv # HyperV drivers
727
728 #####################################################################
729
730 #
731 # Miscellaneous hardware:
732 #
733 # ipmi: Intelligent Platform Management Interface
734 # smapi: System Management Application Program Interface driver
735 # smbios: DMI/SMBIOS entry point
736 # vpd: Vital Product Data kernel interface
737 # pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
738 # asmc: Apple System Management Controller
739 # si: Specialix International SI/XIO or SX intelligent serial card driver
740 # tpm: Trusted Platform Module
741
742 # Notes on the Specialix SI/XIO driver:
743 # The host card is memory, not IO mapped.
744 # The Rev 1 host cards use a 64K chunk, on a 32K boundary.
745 # The Rev 2 host cards use a 32K chunk, on a 32K boundary.
746 # The cards can use an IRQ of 11, 12 or 15.
747
748 # Notes on the Sony Programmable I/O controller
749 # This is a temporary driver that should someday be replaced by something
750 # that hooks into the ACPI layer. The device is hooked to the PIIX4's
751 # General Device 10 decoder, which means you have to fiddle with PCI
752 # registers to map it in, even though it is otherwise treated here as
753 # an ISA device. At the moment, the driver polls, although the device
754 # is capable of generating interrupts. It largely undocumented.
755 # The port location in the hint is where you WANT the device to be
756 # mapped. 0x10a0 seems to be traditional. At the moment the jogdial
757 # is the only thing truly supported, but apparently a fair percentage
758 # of the Vaio extra features are controlled by this device.
759
760 device ipmi
761 device smapi
762 device smbios
763 device vpd
764 device pbio
765 envvar hint.pbio.0.at="isa"
766 envvar hint.pbio.0.port="0x360"
767 device asmc
768 device tpm
769 device padlock_rng # VIA Padlock RNG
770 device rdrand_rng # Intel Bull Mountain RNG
771 device aesni # AES-NI OpenCrypto module
772 device ossl # OpenSSL OpenCrypto module
773
774 #
775 # Laptop/Notebook options:
776 #
777 # See also:
778 # apm under `Miscellaneous hardware'
779 # above.
780
781 device backlight
782
783 # For older notebooks that signal a powerfail condition (external
784 # power supply dropped, or battery state low) by issuing an NMI:
785
786 options POWERFAIL_NMI # make it beep instead of panicing
787
788 #
789 # I2C Bus
790 #
791 # Philips i2c bus support is provided by the `iicbus' device.
792 #
793 # Supported interfaces:
794 # pcf Philips PCF8584 ISA-bus controller
795 #
796 device pcf
797 envvar hint.pcf.0.at="isa"
798 envvar hint.pcf.0.port="0x320"
799 envvar hint.pcf.0.irq="5"
800
801 #
802 # Hardware watchdog timers:
803 #
804 # ichwd: Intel ICH watchdog timer
805 # amdsbwd: AMD SB7xx watchdog timer
806 # viawd: VIA south bridge watchdog timer
807 # wbwd: Winbond watchdog timer
808 # itwd: ITE Super I/O watchdog timer
809 #
810 device ichwd
811 device amdsbwd
812 device viawd
813 device wbwd
814 device itwd
815
816 #
817 # Temperature sensors:
818 #
819 # coretemp: on-die sensor on Intel Core and newer CPUs
820 # amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
821 #
822 device coretemp
823 device amdtemp
824
825 #
826 # CPU control pseudo-device. Provides access to MSRs, CPUID info and
827 # microcode update feature.
828 #
829 device cpuctl
830
831 #
832 # SuperIO driver.
833 #
834 device superio
835
836 #
837 # System Management Bus (SMB)
838 #
839 options ENABLE_ALART # Control alarm on Intel intpm driver
840
841 #
842 # Set the number of PV entries per process. Increasing this can
843 # stop panics related to heavy use of shared memory. However, that can
844 # (combined with large amounts of physical memory) cause panics at
845 # boot time due the kernel running out of VM space.
846 #
847 # If you're tweaking this, you might also want to increase the sysctls
848 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
849 #
850 # The value below is the one more than the default.
851 #
852 options PMAP_SHPGPERPROC=201
853
854 #
855 # Number of initial kernel page table pages used for early bootstrap.
856 # This number should include enough pages to map the kernel, any
857 # modules or other data loaded with the kernel by the loader, and data
858 # structures allocated before the VM system is initialized such as the
859 # vm_page_t array. Each page table page maps 4MB (2MB with PAE).
860 #
861 options NKPT=31
862
863 #
864 # HID-over-I2C support
865 #
866 device iichid # HID-over-I2C support
867 options IICHID_DEBUG # Enable HID-over-I2C debug messages
868 options IICHID_SAMPLING # Workaround missing GPIO INTR support
869
870 #####################################################################
871 # ABI Emulation
872
873 # Enable (32-bit) a.out binary support
874 options COMPAT_AOUT
875
876 # Enable 32-bit runtime support for CloudABI binaries.
877 options COMPAT_CLOUDABI32
878
879 # Enable Linux ABI emulation
880 options COMPAT_LINUX
881
882 # Enable the linux-like proc filesystem support (requires COMPAT_LINUX
883 # and PSEUDOFS)
884 options LINPROCFS
885
886 #Enable the linux-like sys filesystem support (requires COMPAT_LINUX
887 # and PSEUDOFS)
888 options LINSYSFS
889
890 # Enable NDIS binary driver support
891 options NDISAPI
892 device ndis
893
894
895 #####################################################################
896 # VM OPTIONS
897
898 # KSTACK_PAGES is the number of memory pages to assign to the kernel
899 # stack of each thread.
900
901 options KSTACK_PAGES=5
902
903 # Enable detailed accounting by the PV entry allocator.
904
905 options PV_STATS
906
907 #####################################################################
908
909 # More undocumented options for linting.
910 # Note that documenting these are not considered an affront.
911
912 options FB_INSTALL_CDEV # install a CDEV entry in /dev
913
914 options I586_PMC_GUPROF=0x70000
915 options KBDIO_DEBUG=2
916 options KBD_MAXRETRY=4
917 options KBD_MAXWAIT=6
918 options KBD_RESETDELAY=201
919
920 options PSM_DEBUG=1
921
922 options TIMER_FREQ=((14318182+6)/12)
923
924 options VM_KMEM_SIZE
925 options VM_KMEM_SIZE_MAX
926 options VM_KMEM_SIZE_SCALE
927
928
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