2 # GENERIC -- Generic kernel configuration file for FreeBSD/amd64
4 # For more information on this file, please read the config(5) manual page,
5 # and/or the handbook section on Kernel Configuration Files:
7 # https://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
9 # The handbook is also available locally in /usr/share/doc/handbook
10 # if you've installed the doc distribution, otherwise always see the
11 # FreeBSD World Wide Web server (https://www.FreeBSD.org/) for the
14 # An exhaustive list of options and more detailed explanations of the
15 # device lines is also present in the ../../conf/NOTES and NOTES files.
16 # If you are in doubt as to the purpose or necessity of a line, check first
24 makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
25 makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support
27 options SCHED_ULE # ULE scheduler
28 options NUMA # Non-Uniform Memory Architecture support
29 options PREEMPTION # Enable kernel thread preemption
30 options VIMAGE # Subsystem virtualization, e.g. VNET
31 options INET # InterNETworking
32 options INET6 # IPv6 communications protocols
33 options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5
34 options ROUTE_MPATH # Multipath routing support
35 options TCP_OFFLOAD # TCP offload
36 options TCP_BLACKBOX # Enhanced TCP event logging
37 options TCP_HHOOK # hhook(9) framework for TCP
38 options TCP_RFC7413 # TCP Fast Open
39 options SCTP_SUPPORT # Allow kldload of SCTP
40 options KERN_TLS # TLS transmit & receive offload
41 options FFS # Berkeley Fast Filesystem
42 options SOFTUPDATES # Enable FFS soft updates support
43 options UFS_ACL # Support for access control lists
44 options UFS_DIRHASH # Improve performance on big directories
45 options UFS_GJOURNAL # Enable gjournal-based UFS journaling
46 options QUOTA # Enable disk quotas for UFS
47 options MD_ROOT # MD is a potential root device
48 options NFSCL # Network Filesystem Client
49 options NFSD # Network Filesystem Server
50 options NFSLOCKD # Network Lock Manager
51 options NFS_ROOT # NFS usable as /, requires NFSCL
52 options MSDOSFS # MSDOS Filesystem
53 options CD9660 # ISO 9660 Filesystem
54 options PROCFS # Process filesystem (requires PSEUDOFS)
55 options PSEUDOFS # Pseudo-filesystem framework
56 options TMPFS # Efficient memory filesystem
57 options GEOM_RAID # Soft RAID functionality.
58 options GEOM_LABEL # Provides labelization
59 options EFIRT # EFI Runtime Services support
60 options COMPAT_FREEBSD32 # Compatible with i386 binaries
61 options COMPAT_FREEBSD4 # Compatible with FreeBSD4
62 options COMPAT_FREEBSD5 # Compatible with FreeBSD5
63 options COMPAT_FREEBSD6 # Compatible with FreeBSD6
64 options COMPAT_FREEBSD7 # Compatible with FreeBSD7
65 options COMPAT_FREEBSD9 # Compatible with FreeBSD9
66 options COMPAT_FREEBSD10 # Compatible with FreeBSD10
67 options COMPAT_FREEBSD11 # Compatible with FreeBSD11
68 options COMPAT_FREEBSD12 # Compatible with FreeBSD12
69 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
70 options KTRACE # ktrace(1) support
71 options STACK # stack(9) support
72 options SYSVSHM # SYSV-style shared memory
73 options SYSVMSG # SYSV-style message queues
74 options SYSVSEM # SYSV-style semaphores
75 options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
76 options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
77 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
78 options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
79 options AUDIT # Security event auditing
80 options CAPABILITY_MODE # Capsicum capability mode
81 options CAPABILITIES # Capsicum capabilities
82 options MAC # TrustedBSD MAC Framework
83 options KDTRACE_FRAME # Ensure frames are compiled in
84 options KDTRACE_HOOKS # Kernel DTrace hooks
85 options DDB_CTF # Kernel ELF linker loads CTF data
86 options INCLUDE_CONFIG_FILE # Include this file in kernel
87 options RACCT # Resource accounting framework
88 options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
89 options RCTL # Resource limits
91 # Debugging support. Always need this:
92 options KDB # Enable kernel debugger support.
93 options KDB_TRACE # Print a stack trace for a panic.
94 # For full debugger support use (turn off in stable branch):
95 options BUF_TRACKING # Track buffer history
96 options DDB # Support DDB.
97 options FULL_BUF_TRACKING # Track more buffer history
98 options GDB # Support remote GDB.
99 options DEADLKRES # Enable the deadlock resolver
100 options INVARIANTS # Enable calls of extra sanity checking
101 options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
102 options QUEUE_MACRO_DEBUG_TRASH # Trash queue(2) internal pointers on invalidation
103 options WITNESS # Enable checks to detect deadlocks and cycles
104 options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
105 options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
106 options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default
109 #options COVERAGE # Generic kernel coverage. Used by KCOV
110 #options KCOV # Kernel Coverage Sanitizer
111 # Warning: KUBSAN can result in a kernel too large for loader to load
112 #options KUBSAN # Kernel Undefined Behavior Sanitizer
113 #options KCSAN # Kernel Concurrency Sanitizer
115 # Kernel dump features.
116 options EKCD # Support for encrypted kernel dumps
117 options GZIO # gzip-compressed kernel and user dumps
118 options ZSTDIO # zstd-compressed kernel and user dumps
119 options DEBUGNET # debugnet networking
120 options NETDUMP # netdump(4) client support
121 options NETGDB # netgdb(4) client support
123 # Make an SMP-capable kernel by default
124 options SMP # Symmetric MultiProcessor Kernel
125 options EARLY_AP_STARTUP
127 # CPU frequency control
134 options PCI_HP # PCI-Express native HotPlug
135 options PCI_IOV # PCI SR-IOV support
141 device ahci # AHCI-compatible SATA controllers
142 device ata # Legacy ATA/SATA controllers
143 device mvs # Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA
144 device siis # SiliconImage SiI3124/SiI3132/SiI3531 SATA
147 device ahc # AHA2940 and onboard AIC7xxx devices
148 device ahd # AHA39320/29320 and onboard AIC79xx devices
149 device esp # AMD Am53C974 (Tekram DC-390(T))
150 device hptiop # Highpoint RocketRaid 3xxx series
151 device isp # Qlogic family
152 #device ispfw # Firmware for QLogic HBAs- normally a module
153 device mpt # LSI-Logic MPT-Fusion
154 device mps # LSI-Logic MPT-Fusion 2
155 device mpr # LSI-Logic MPT-Fusion 3
156 device sym # NCR/Symbios Logic
157 device isci # Intel C600 SAS controller
158 device ocs_fc # Emulex FC adapters
159 device pvscsi # VMware PVSCSI
161 # ATA/SCSI peripherals
162 device scbus # SCSI bus (required for ATA/SCSI)
163 device ch # SCSI media changers
164 device da # Direct Access (disks)
165 device sa # Sequential Access (tape etc)
167 device pass # Passthrough device (direct ATA/SCSI access)
168 device ses # Enclosure Services (SES and SAF-TE)
169 #device ctl # CAM Target Layer
171 # RAID controllers interfaced to the SCSI subsystem
172 device amr # AMI MegaRAID
173 device arcmsr # Areca SATA II RAID
174 device ciss # Compaq Smart RAID 5*
175 device iir # Intel Integrated RAID
176 device ips # IBM (Adaptec) ServeRAID
177 device mly # Mylex AcceleRAID/eXtremeRAID
178 device twa # 3ware 9000 series PATA/SATA RAID
179 device smartpqi # Microsemi smartpqi driver
180 device tws # LSI 3ware 9750 SATA+SAS 6Gb/s RAID controller
183 device aac # Adaptec FSA RAID
184 device aacp # SCSI passthrough for aac (requires CAM)
185 device aacraid # Adaptec by PMC RAID
186 device ida # Compaq Smart RAID
187 device mfi # LSI MegaRAID SAS
188 device mlx # Mylex DAC960 family
189 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
190 device pmspcv # PMC-Sierra SAS/SATA Controller driver
191 #XXX pointer/int warnings
192 #device pst # Promise Supertrak SX6000
193 device twe # 3ware ATA RAID
195 # NVM Express (NVMe) support
196 device nvme # base NVMe driver
197 device nvd # expose NVMe namespaces as disks, depends on nvme
199 # Intel Volume Management Device (VMD) support
200 device vmd # base VMD device
201 device vmd_bus # bus for VMD children
203 # atkbdc0 controls both the keyboard and the PS/2 mouse
204 device atkbdc # AT keyboard controller
205 device atkbd # AT keyboard
206 device psm # PS/2 mouse
208 device kbdmux # keyboard multiplexer
210 device vga # VGA video card driver
211 options VESA # Add support for VESA BIOS Extensions (VBE)
213 device splash # Splash screen and screen saver support
215 # syscons is the default console driver, resembling an SCO console
217 options SC_PIXEL_MODE # add support for the raster text mode
219 # vt is the new video console driver
225 device agp # support several AGP chipsets
227 # PCCARD (PCMCIA) support
228 # PCMCIA and cardbus bridge support
229 device cbb # cardbus (yenta) bridge
230 device pccard # PC Card (16-bit) bus
231 device cardbus # CardBus (32-bit) bus
234 device uart # Generic UART driver
238 device ppbus # Parallel port bus (required)
240 device ppi # Parallel port interface device
241 #device vpo # Requires scbus and da
243 device puc # Multi I/O cards and multi-channel UARTs
245 # PCI/PCI-X/PCIe Ethernet NICs that use iflib infrastructure
247 device em # Intel PRO/1000 Gigabit Ethernet Family
248 device ix # Intel PRO/10GbE PCIE PF Ethernet
249 device ixv # Intel PRO/10GbE PCIE VF Ethernet
250 device ixl # Intel 700 Series Physical Function
251 device iavf # Intel Adaptive Virtual Function
252 device ice # Intel 800 Series Physical Function
253 device vmx # VMware VMXNET3 Ethernet
254 device axp # AMD EPYC integrated NIC
257 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
258 device le # AMD Am7900 LANCE and Am79C9xx PCnet
259 device ti # Alteon Networks Tigon I/II gigabit Ethernet
261 # PCI Ethernet NICs that use the common MII bus controller code.
262 # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
263 device miibus # MII bus support
264 device ae # Attansic/Atheros L2 FastEthernet
265 device age # Attansic/Atheros L1 Gigabit Ethernet
266 device alc # Atheros AR8131/AR8132 Ethernet
267 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
268 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
269 device bfe # Broadcom BCM440x 10/100 Ethernet
270 device bge # Broadcom BCM570xx Gigabit Ethernet
271 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
272 device dc # DEC/Intel 21143 and various workalikes
273 device et # Agere ET1310 10/100/Gigabit Ethernet
274 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
275 device gem # Sun GEM/Sun ERI/Apple GMAC
276 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
277 device lge # Level 1 LXT1001 gigabit Ethernet
278 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
279 device nfe # nVidia nForce MCP on-board Ethernet
280 device nge # NatSemi DP83820 gigabit Ethernet
281 device re # RealTek 8139C+/8169/8169S/8110S
282 device rl # RealTek 8129/8139
283 device sge # Silicon Integrated Systems SiS190/191
284 device sis # Silicon Integrated Systems SiS 900/SiS 7016
285 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
286 device ste # Sundance ST201 (D-Link DFE-550TX)
287 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
288 device vge # VIA VT612x gigabit Ethernet
289 device vr # VIA Rhine, Rhine II
290 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
293 device wlan # 802.11 support
294 options IEEE80211_DEBUG # enable debug msgs
295 options IEEE80211_SUPPORT_MESH # enable 802.11s draft support
296 device wlan_wep # 802.11 WEP support
297 device wlan_ccmp # 802.11 CCMP support
298 device wlan_tkip # 802.11 TKIP support
299 device wlan_amrr # AMRR transmit rate control algorithm
300 device an # Aironet 4500/4800 802.11 wireless NICs.
301 device ath # Atheros NICs
302 device ath_pci # Atheros pci/cardbus glue
303 device ath_hal # pci/cardbus chip support
304 options AH_AR5416_INTERRUPT_MITIGATION # AR5416 interrupt mitigation
305 options ATH_ENABLE_11N # Enable 802.11n support for AR5416 and later
306 device ath_rate_sample # SampleRate tx rate control for ath
307 #device bwi # Broadcom BCM430x/BCM431x wireless NICs.
308 #device bwn # Broadcom BCM43xx wireless NICs.
309 device ipw # Intel 2100 wireless NICs.
310 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
311 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
312 device malo # Marvell Libertas wireless NICs.
313 device mwl # Marvell 88W8363 802.11n wireless NICs.
314 device ral # Ralink Technology RT2500 wireless NICs.
315 device wpi # Intel 3945ABG wireless NICs.
318 device crypto # core crypto support
319 device aesni # AES-NI OpenCrypto module
320 device loop # Network loopback
321 device padlock_rng # VIA Padlock RNG
322 device rdrand_rng # Intel Bull Mountain RNG
323 device ether # Ethernet support
324 device vlan # 802.1Q VLAN support
325 device tuntap # Packet tunnel.
326 device md # Memory "disks"
327 device gif # IPv6 and IPv4 tunneling
328 device firmware # firmware assist module
330 # The `bpf' device enables the Berkeley Packet Filter.
331 # Be aware of the administrative consequences of enabling this!
332 # Note that 'bpf' is required for DHCP.
333 device bpf # Berkeley packet filter
336 options USB_DEBUG # enable debug msgs
337 device uhci # UHCI PCI->USB interface
338 device ohci # OHCI PCI->USB interface
339 device ehci # EHCI PCI->USB interface (USB 2.0)
340 device xhci # XHCI PCI->USB interface (USB 3.0)
341 device usb # USB Bus (required)
342 device ukbd # Keyboard
343 device umass # Disks/Mass storage - Requires scbus and da
346 device sound # Generic sound driver (required)
347 device snd_cmi # CMedia CMI8338/CMI8738
348 device snd_csa # Crystal Semiconductor CS461x/428x
349 device snd_emu10kx # Creative SoundBlaster Live! and Audigy
350 device snd_es137x # Ensoniq AudioPCI ES137x
351 device snd_hda # Intel High Definition Audio
352 device snd_ich # Intel, NVidia and other ICH AC'97 Audio
353 device snd_via8233 # VIA VT8233x Audio
356 device mmc # MMC/SD bus
357 device mmcsd # MMC/SD memory card
358 device sdhci # Generic PCI SD Host Controller
359 device rtsx # Realtek SD card reader
362 device virtio # Generic VirtIO bus (required)
363 device virtio_pci # VirtIO PCI device
364 device vtnet # VirtIO Ethernet device
365 device virtio_blk # VirtIO Block device
366 device virtio_scsi # VirtIO SCSI device
367 device virtio_balloon # VirtIO Memory Balloon device
369 # HyperV drivers and enhancement support
370 device hyperv # HyperV drivers
372 # Xen HVM Guest Optimizations
373 # NOTE: XENHVM depends on xenpci. They must be added or removed together.
374 options XENHVM # Xen HVM kernel infrastructure
375 device xenpci # Xen HVM Hypervisor services driver
377 # Netmap provides direct access to TX/RX rings on supported NICs
378 device netmap # netmap(4) support
381 options EVDEV_SUPPORT # evdev support in legacy drivers
382 device evdev # input event device support
383 device uinput # install /dev/uinput cdev
386 options HID_DEBUG # enable debug msgs
387 device hid # Generic HID support
388 options IICHID_SAMPLING # Workaround missing GPIO INTR support