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 # IP (v4/v6) security
34 options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5
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 # Stream Control Transmission Protocol
40 options FFS # Berkeley Fast Filesystem
41 options SOFTUPDATES # Enable FFS soft updates support
42 options UFS_ACL # Support for access control lists
43 options UFS_DIRHASH # Improve performance on big directories
44 options UFS_GJOURNAL # Enable gjournal-based UFS journaling
45 options QUOTA # Enable disk quotas for UFS
46 options MD_ROOT # MD is a potential root device
47 options NFSCL # Network Filesystem Client
48 options NFSD # Network Filesystem Server
49 options NFSLOCKD # Network Lock Manager
50 options NFS_ROOT # NFS usable as /, requires NFSCL
51 options MSDOSFS # MSDOS Filesystem
52 options CD9660 # ISO 9660 Filesystem
53 options PROCFS # Process filesystem (requires PSEUDOFS)
54 options PSEUDOFS # Pseudo-filesystem framework
55 options GEOM_RAID # Soft RAID functionality.
56 options GEOM_LABEL # Provides labelization
57 options EFIRT # EFI Runtime Services support
58 options COMPAT_FREEBSD32 # Compatible with i386 binaries
59 options COMPAT_FREEBSD4 # Compatible with FreeBSD4
60 options COMPAT_FREEBSD5 # Compatible with FreeBSD5
61 options COMPAT_FREEBSD6 # Compatible with FreeBSD6
62 options COMPAT_FREEBSD7 # Compatible with FreeBSD7
63 options COMPAT_FREEBSD9 # Compatible with FreeBSD9
64 options COMPAT_FREEBSD10 # Compatible with FreeBSD10
65 options COMPAT_FREEBSD11 # Compatible with FreeBSD11
66 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
67 options KTRACE # ktrace(1) support
68 options STACK # stack(9) support
69 options SYSVSHM # SYSV-style shared memory
70 options SYSVMSG # SYSV-style message queues
71 options SYSVSEM # SYSV-style semaphores
72 options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
73 options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
74 options KBD_INSTALL_CDEV # install a CDEV entry in /dev
75 options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
76 options AUDIT # Security event auditing
77 options CAPABILITY_MODE # Capsicum capability mode
78 options CAPABILITIES # Capsicum capabilities
79 options MAC # TrustedBSD MAC Framework
80 options KDTRACE_FRAME # Ensure frames are compiled in
81 options KDTRACE_HOOKS # Kernel DTrace hooks
82 options DDB_CTF # Kernel ELF linker loads CTF data
83 options INCLUDE_CONFIG_FILE # Include this file in kernel
84 options RACCT # Resource accounting framework
85 options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
86 options RCTL # Resource limits
88 # Debugging support. Always need this:
89 options KDB # Enable kernel debugger support.
90 options KDB_TRACE # Print a stack trace for a panic.
91 # For full debugger support use (turn off in stable branch):
92 options BUF_TRACKING # Track buffer history
93 options DDB # Support DDB.
94 options FULL_BUF_TRACKING # Track more buffer history
95 options GDB # Support remote GDB.
96 options DEADLKRES # Enable the deadlock resolver
97 options INVARIANTS # Enable calls of extra sanity checking
98 options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
99 options WITNESS # Enable checks to detect deadlocks and cycles
100 options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
101 options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
102 options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default
103 # Warning: KUBSAN can result in a kernel too large for loader to load
104 #options KUBSAN # Kernel Undefined Behavior Sanitizer
106 # Kernel dump features.
107 options EKCD # Support for encrypted kernel dumps
108 options GZIO # gzip-compressed kernel and user dumps
109 options ZSTDIO # zstd-compressed kernel and user dumps
110 options NETDUMP # netdump(4) client support
112 # Make an SMP-capable kernel by default
113 options SMP # Symmetric MultiProcessor Kernel
114 options EARLY_AP_STARTUP
116 # CPU frequency control
123 options PCI_HP # PCI-Express native HotPlug
124 options PCI_IOV # PCI SR-IOV support
130 device ahci # AHCI-compatible SATA controllers
131 device ata # Legacy ATA/SATA controllers
132 device mvs # Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA
133 device siis # SiliconImage SiI3124/SiI3132/SiI3531 SATA
136 device ahc # AHA2940 and onboard AIC7xxx devices
137 device ahd # AHA39320/29320 and onboard AIC79xx devices
138 device esp # AMD Am53C974 (Tekram DC-390(T))
139 device hptiop # Highpoint RocketRaid 3xxx series
140 device isp # Qlogic family
141 #device ispfw # Firmware for QLogic HBAs- normally a module
142 device mpt # LSI-Logic MPT-Fusion
143 device mps # LSI-Logic MPT-Fusion 2
144 device mpr # LSI-Logic MPT-Fusion 3
145 device sym # NCR/Symbios Logic
146 device trm # Tekram DC395U/UW/F DC315U adapters
147 device isci # Intel C600 SAS controller
148 device ocs_fc # Emulex FC adapters
150 # ATA/SCSI peripherals
151 device scbus # SCSI bus (required for ATA/SCSI)
152 device ch # SCSI media changers
153 device da # Direct Access (disks)
154 device sa # Sequential Access (tape etc)
156 device pass # Passthrough device (direct ATA/SCSI access)
157 device ses # Enclosure Services (SES and SAF-TE)
158 #device ctl # CAM Target Layer
160 # RAID controllers interfaced to the SCSI subsystem
161 device amr # AMI MegaRAID
162 device arcmsr # Areca SATA II RAID
163 device ciss # Compaq Smart RAID 5*
164 device hptmv # Highpoint RocketRAID 182x
165 device hptnr # Highpoint DC7280, R750
166 device hptrr # Highpoint RocketRAID 17xx, 22xx, 23xx, 25xx
167 device hpt27xx # Highpoint RocketRAID 27xx
168 device iir # Intel Integrated RAID
169 device ips # IBM (Adaptec) ServeRAID
170 device mly # Mylex AcceleRAID/eXtremeRAID
171 device twa # 3ware 9000 series PATA/SATA RAID
172 device smartpqi # Microsemi smartpqi driver
173 device tws # LSI 3ware 9750 SATA+SAS 6Gb/s RAID controller
176 device aac # Adaptec FSA RAID
177 device aacp # SCSI passthrough for aac (requires CAM)
178 device aacraid # Adaptec by PMC RAID
179 device ida # Compaq Smart RAID
180 device mfi # LSI MegaRAID SAS
181 device mlx # Mylex DAC960 family
182 device mrsas # LSI/Avago MegaRAID SAS/SATA, 6Gb/s and 12Gb/s
183 device pmspcv # PMC-Sierra SAS/SATA Controller driver
184 #XXX pointer/int warnings
185 #device pst # Promise Supertrak SX6000
186 device twe # 3ware ATA RAID
188 # NVM Express (NVMe) support
189 device nvme # base NVMe driver
190 device nvd # expose NVMe namespaces as disks, depends on nvme
192 # atkbdc0 controls both the keyboard and the PS/2 mouse
193 device atkbdc # AT keyboard controller
194 device atkbd # AT keyboard
195 device psm # PS/2 mouse
197 device kbdmux # keyboard multiplexer
199 device vga # VGA video card driver
200 options VESA # Add support for VESA BIOS Extensions (VBE)
202 device splash # Splash screen and screen saver support
204 # syscons is the default console driver, resembling an SCO console
206 options SC_PIXEL_MODE # add support for the raster text mode
208 # vt is the new video console driver
213 device agp # support several AGP chipsets
215 # PCCARD (PCMCIA) support
216 # PCMCIA and cardbus bridge support
217 device cbb # cardbus (yenta) bridge
218 device pccard # PC Card (16-bit) bus
219 device cardbus # CardBus (32-bit) bus
222 device uart # Generic UART driver
226 device ppbus # Parallel port bus (required)
228 device ppi # Parallel port interface device
229 #device vpo # Requires scbus and da
231 device puc # Multi I/O cards and multi-channel UARTs
234 device bxe # Broadcom NetXtreme II BCM5771X/BCM578XX 10GbE
235 device de # DEC/Intel DC21x4x (``Tulip'')
236 device em # Intel PRO/1000 Gigabit Ethernet Family
237 device ix # Intel PRO/10GbE PCIE PF Ethernet
238 device ixv # Intel PRO/10GbE PCIE VF Ethernet
239 device ixl # Intel 700 Series Physical Function
240 device iavf # Intel Adaptive Virtual Function
241 device le # AMD Am7900 LANCE and Am79C9xx PCnet
242 device ti # Alteon Networks Tigon I/II gigabit Ethernet
243 device txp # 3Com 3cR990 (``Typhoon'')
244 device vx # 3Com 3c590, 3c595 (``Vortex'')
246 # PCI Ethernet NICs that use the common MII bus controller code.
247 # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
248 device miibus # MII bus support
249 device ae # Attansic/Atheros L2 FastEthernet
250 device age # Attansic/Atheros L1 Gigabit Ethernet
251 device alc # Atheros AR8131/AR8132 Ethernet
252 device ale # Atheros AR8121/AR8113/AR8114 Ethernet
253 device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet
254 device bfe # Broadcom BCM440x 10/100 Ethernet
255 device bge # Broadcom BCM570xx Gigabit Ethernet
256 device cas # Sun Cassini/Cassini+ and NS DP83065 Saturn
257 device dc # DEC/Intel 21143 and various workalikes
258 device et # Agere ET1310 10/100/Gigabit Ethernet
259 device fxp # Intel EtherExpress PRO/100B (82557, 82558)
260 device gem # Sun GEM/Sun ERI/Apple GMAC
261 device hme # Sun HME (Happy Meal Ethernet)
262 device jme # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
263 device lge # Level 1 LXT1001 gigabit Ethernet
264 device msk # Marvell/SysKonnect Yukon II Gigabit Ethernet
265 device nfe # nVidia nForce MCP on-board Ethernet
266 device nge # NatSemi DP83820 gigabit Ethernet
267 device pcn # AMD Am79C97x PCI 10/100 (precedence over 'le')
268 device re # RealTek 8139C+/8169/8169S/8110S
269 device rl # RealTek 8129/8139
270 device sf # Adaptec AIC-6915 (``Starfire'')
271 device sge # Silicon Integrated Systems SiS190/191
272 device sis # Silicon Integrated Systems SiS 900/SiS 7016
273 device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
274 device ste # Sundance ST201 (D-Link DFE-550TX)
275 device stge # Sundance/Tamarack TC9021 gigabit Ethernet
276 device tl # Texas Instruments ThunderLAN
277 device tx # SMC EtherPower II (83c170 ``EPIC'')
278 device vge # VIA VT612x gigabit Ethernet
279 device vr # VIA Rhine, Rhine II
280 device wb # Winbond W89C840F
281 device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
284 device wlan # 802.11 support
285 options IEEE80211_DEBUG # enable debug msgs
286 options IEEE80211_AMPDU_AGE # age frames in AMPDU reorder q's
287 options IEEE80211_SUPPORT_MESH # enable 802.11s draft support
288 device wlan_wep # 802.11 WEP support
289 device wlan_ccmp # 802.11 CCMP support
290 device wlan_tkip # 802.11 TKIP support
291 device wlan_amrr # AMRR transmit rate control algorithm
292 device an # Aironet 4500/4800 802.11 wireless NICs.
293 device ath # Atheros NICs
294 device ath_pci # Atheros pci/cardbus glue
295 device ath_hal # pci/cardbus chip support
296 options AH_SUPPORT_AR5416 # enable AR5416 tx/rx descriptors
297 options AH_AR5416_INTERRUPT_MITIGATION # AR5416 interrupt mitigation
298 options ATH_ENABLE_11N # Enable 802.11n support for AR5416 and later
299 device ath_rate_sample # SampleRate tx rate control for ath
300 #device bwi # Broadcom BCM430x/BCM431x wireless NICs.
301 #device bwn # Broadcom BCM43xx wireless NICs.
302 device ipw # Intel 2100 wireless NICs.
303 device iwi # Intel 2200BG/2225BG/2915ABG wireless NICs.
304 device iwn # Intel 4965/1000/5000/6000 wireless NICs.
305 device malo # Marvell Libertas wireless NICs.
306 device mwl # Marvell 88W8363 802.11n wireless NICs.
307 device ral # Ralink Technology RT2500 wireless NICs.
308 device wi # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
309 device wpi # Intel 3945ABG wireless NICs.
312 device crypto # core crypto support
313 device loop # Network loopback
314 device random # Entropy device
315 device padlock_rng # VIA Padlock RNG
316 device rdrand_rng # Intel Bull Mountain RNG
317 device ether # Ethernet support
318 device vlan # 802.1Q VLAN support
319 device tun # Packet tunnel.
320 device md # Memory "disks"
321 device gif # IPv6 and IPv4 tunneling
322 device firmware # firmware assist module
324 # The `bpf' device enables the Berkeley Packet Filter.
325 # Be aware of the administrative consequences of enabling this!
326 # Note that 'bpf' is required for DHCP.
327 device bpf # Berkeley packet filter
330 options USB_DEBUG # enable debug msgs
331 device uhci # UHCI PCI->USB interface
332 device ohci # OHCI PCI->USB interface
333 device ehci # EHCI PCI->USB interface (USB 2.0)
334 device xhci # XHCI PCI->USB interface (USB 3.0)
335 device usb # USB Bus (required)
336 device ukbd # Keyboard
337 device umass # Disks/Mass storage - Requires scbus and da
340 device sound # Generic sound driver (required)
341 device snd_cmi # CMedia CMI8338/CMI8738
342 device snd_csa # Crystal Semiconductor CS461x/428x
343 device snd_emu10kx # Creative SoundBlaster Live! and Audigy
344 device snd_es137x # Ensoniq AudioPCI ES137x
345 device snd_hda # Intel High Definition Audio
346 device snd_ich # Intel, NVidia and other ICH AC'97 Audio
347 device snd_via8233 # VIA VT8233x Audio
350 device mmc # MMC/SD bus
351 device mmcsd # MMC/SD memory card
352 device sdhci # Generic PCI SD Host Controller
355 device virtio # Generic VirtIO bus (required)
356 device virtio_pci # VirtIO PCI device
357 device vtnet # VirtIO Ethernet device
358 device virtio_blk # VirtIO Block device
359 device virtio_scsi # VirtIO SCSI device
360 device virtio_balloon # VirtIO Memory Balloon device
362 # HyperV drivers and enhancement support
363 device hyperv # HyperV drivers
365 # Xen HVM Guest Optimizations
366 # NOTE: XENHVM depends on xenpci. They must be added or removed together.
367 options XENHVM # Xen HVM kernel infrastructure
368 device xenpci # Xen HVM Hypervisor services driver
371 device vmx # VMware VMXNET3 Ethernet
373 # Netmap provides direct access to TX/RX rings on supported NICs
374 device netmap # netmap(4) support
377 options EVDEV_SUPPORT # evdev support in legacy drivers
378 device evdev # input event device support
379 device uinput # install /dev/uinput cdev