1# 2# MINIMAL -- Mostly Minimal kernel configuration file for FreeBSD/i386 3# 4# Many definitions of minimal are possible. The one this file follows is 5# GENERIC, minus all functionality that can be replaced by loading kernel 6# modules. 7# 8# Exceptions: 9# o While UFS is buildable as a module, the current module lacks 10# some features (ACL, GJOURNAL) that GENERIC includes. 11# o acpi as a module has been reported flakey and not well tested, so 12# is included in the kernel. 13# o (non-loaded) random is included due to uncertainty... 14# o Many networking things are included 15# 16# For now, please run changes to these list past imp@freebsd.org 17# 18# For more information on this file, please read the config(5) manual page, 19# and/or the handbook section on Kernel Configuration Files: 20# 21# https://docs.freebsd.org/en/books/handbook/kernelconfig/#kernelconfig-config 22# 23# The handbook is also available locally in /usr/share/doc/handbook 24# if you've installed the doc distribution, otherwise always see the 25# FreeBSD World Wide Web server (https://www.FreeBSD.org/) for the 26# latest information. 27# 28# An exhaustive list of options and more detailed explanations of the 29# device lines is also present in the ../../conf/NOTES and NOTES files. 30# If you are in doubt as to the purpose or necessity of a line, check first 31# in NOTES. 32# 33# $FreeBSD$ 34 35cpu I486_CPU 36cpu I586_CPU 37cpu I686_CPU 38ident MINIMAL 39 40makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols 41makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support 42 43options SCHED_ULE # ULE scheduler 44options PREEMPTION # Enable kernel thread preemption 45options INET # InterNETworking 46options INET6 # IPv6 communications protocols 47options CC_NEWRENO # include newreno congestion control 48options CC_DEFAULT=\"newreno\" # define our default CC module it should be compiled in. 49options TCP_OFFLOAD # TCP offload 50options SCTP_SUPPORT # Allow kldload of SCTP 51options FFS # Berkeley Fast Filesystem 52options SOFTUPDATES # Enable FFS soft updates support 53options UFS_ACL # Support for access control lists 54options UFS_DIRHASH # Improve performance on big directories 55options UFS_GJOURNAL # Enable gjournal-based UFS journaling 56options QUOTA # Enable disk quotas for UFS 57options MD_ROOT # MD is a potential root device 58options COMPAT_FREEBSD4 # Compatible with FreeBSD4 59options COMPAT_FREEBSD5 # Compatible with FreeBSD5 60options COMPAT_FREEBSD6 # Compatible with FreeBSD6 61options COMPAT_FREEBSD7 # Compatible with FreeBSD7 62options COMPAT_FREEBSD9 # Compatible with FreeBSD9 63options COMPAT_FREEBSD10 # Compatible with FreeBSD10 64options COMPAT_FREEBSD11 # Compatible with FreeBSD11 65options COMPAT_FREEBSD12 # Compatible with FreeBSD12 66options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI 67options KTRACE # ktrace(1) support 68options STACK # stack(9) support 69options SYSVSHM # SYSV-style shared memory 70options SYSVMSG # SYSV-style message queues 71options SYSVSEM # SYSV-style semaphores 72options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions 73options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed. 74options KBD_INSTALL_CDEV # install a CDEV entry in /dev 75options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4) 76options AUDIT # Security event auditing 77options CAPABILITY_MODE # Capsicum capability mode 78options CAPABILITIES # Capsicum capabilities 79options MAC # TrustedBSD MAC Framework 80options KDTRACE_FRAME # Ensure frames are compiled in 81options KDTRACE_HOOKS # Kernel DTrace hooks 82options DDB_CTF # Kernel ELF linker loads CTF data 83options INCLUDE_CONFIG_FILE # Include this file in kernel 84 85# Debugging support. Always need this: 86options KDB # Enable kernel debugger support. 87options KDB_TRACE # Print a stack trace for a panic. 88# For full debugger support use (turn off in stable branch): 89options DDB # Support DDB. 90options GDB # Support remote GDB. 91options DEADLKRES # Enable the deadlock resolver 92options INVARIANTS # Enable calls of extra sanity checking 93options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS 94options WITNESS # Enable checks to detect deadlocks and cycles 95options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed 96options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones 97options VERBOSE_SYSINIT=0 # Support debug.verbose_sysinit, off by default 98 99# Make an SMP-capable kernel by default 100options SMP # Symmetric MultiProcessor Kernel 101options EARLY_AP_STARTUP 102device apic 103 104# CPU frequency control 105device cpufreq 106 107# Bus support. 108device acpi 109device smbios 110device pci 111 112# atkbdc0 controls both the keyboard and the PS/2 mouse 113device atkbdc # AT keyboard controller 114device atkbd # AT keyboard 115device psm # PS/2 mouse 116 117device kbdmux # keyboard multiplexer 118 119device vga # VGA video card driver 120options VESA # Add support for VESA BIOS Extensions (VBE) 121 122device splash # Splash screen and screen saver support 123 124# syscons is the default console driver, resembling an SCO console 125device sc 126options SC_PIXEL_MODE # add support for the raster text mode 127 128# vt is the new video console driver 129device vt 130device vt_vga 131device vt_efifb 132device vt_vbefb 133 134device agp # support several AGP chipsets 135 136# Pseudo devices. 137device loop # Network loopback 138device padlock_rng # VIA Padlock RNG 139device rdrand_rng # Intel Bull Mountain RNG 140device ether # Ethernet support 141device vlan # 802.1Q VLAN support 142device tuntap # Packet tunnel. 143device gif # IPv6 and IPv4 tunneling 144 145# The `bpf' device enables the Berkeley Packet Filter. 146# Be aware of the administrative consequences of enabling this! 147# Note that 'bpf' is required for DHCP. 148device bpf # Berkeley packet filter 149 150# Linux KVM paravirtualization support 151device kvm_clock # KVM paravirtual clock driver 152 153# Xen HVM Guest Optimizations 154# NOTE: XENHVM depends on xenpci. They must be added or removed together. 155options XENHVM # Xen HVM kernel infrastructure 156device xenpci # Xen HVM Hypervisor services driver 157device xentimer # Xen x86 PV timer device 158 159# evdev interface 160options EVDEV_SUPPORT # evdev support in legacy drivers 161device evdev # input event device support 162device uinput # install /dev/uinput cdev 163