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# (XXX from i386:NOTES,v 1.1106; merge in updates) 7# $FreeBSD$ 8# 9 10# We don't have modules on amd64. 11makeoptions NO_MODULES=not_yet 12 13# 14# This directive is mandatory; it defines the architecture to be 15# configured for; in this case, the 386 family based IBM-PC and 16# compatibles. 17# 18machine amd64 19 20# 21# We want LINT to cover profiling as well 22#X#profile 2 23 24 25##################################################################### 26# SMP OPTIONS: 27# 28# The apic device enables the use of the I/O APIC for interrupt delivery. 29# The apic device can be used in both UP and SMP kernels, but is required 30# for SMP kernels. Thus, the apic device is not strictly an SMP option, 31# but it is a prerequisite for SMP. 32# 33# Notes: 34# 35# Be sure to disable 'cpu I386_CPU' for SMP kernels. 36# 37# By default, mixed mode is used to route IRQ0 from the AT timer via 38# the 8259A master PIC through the ExtINT pin on the first I/O APIC. 39# This can be disabled via the NO_MIXED_MODE option. In that case, 40# IRQ0 will be routed via an intpin on the first I/O APIC. Not all 41# motherboards hook IRQ0 up to the first I/O APIC even though their 42# MP table or MADT may claim to do so. That is why mixed mode is 43# enabled by default. 44# 45 46# Optional: 47device atpic 48device mptable 49options NO_MIXED_MODE # Disable use of mixed mode 50 51 52##################################################################### 53# CPU OPTIONS 54 55# 56# You must specify at least one CPU (the one you intend to run on); 57# deleting the specification for CPUs you don't need to use may make 58# parts of the system run faster. 59# 60cpu HAMMER 61 62# 63# Options for CPU features. 64# 65 66# 67# PERFMON causes the driver for Pentium/Pentium Pro performance counters 68# to be compiled. See perfmon(4) for more information. 69# 70#X#options PERFMON 71 72 73##################################################################### 74# NETWORKING OPTIONS 75 76# 77# DEVICE_POLLING adds support for mixed interrupt-polling handling 78# of network device drivers, which has significant benefits in terms 79# of robustness to overloads and responsivity, as well as permitting 80# accurate scheduling of the CPU time between kernel network processing 81# and other activities. The drawback is a moderate (up to 1/HZ seconds) 82# potential increase in response times. 83# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING 84# to achieve smoother behaviour. 85# Additionally, you can enable/disable polling at runtime with the 86# sysctl variable kern.polling.enable (defaults off), and select 87# the CPU fraction reserved to userland with the sysctl variable 88# kern.polling.user_frac (default 50, range 0..100). 89# 90# Only the "dc" "fxp" and "sis" devices support this mode of operation at 91# the time of this writing. 92 93options DEVICE_POLLING 94 95 96##################################################################### 97# CLOCK OPTIONS 98 99# The following options are used for debugging clock behavior only, and 100# should not be used for production systems. 101# 102# CLK_CALIBRATION_LOOP will run the clock calibration loop at startup 103# until the user presses a key. 104 105options CLK_CALIBRATION_LOOP 106 107# The following two options measure the frequency of the corresponding 108# clock relative to the RTC (onboard mc146818a). 109 110options CLK_USE_I8254_CALIBRATION 111options CLK_USE_TSC_CALIBRATION 112 113 114##################################################################### 115# MISCELLANEOUS DEVICES AND OPTIONS 116 117device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT! 118 119 120##################################################################### 121# HARDWARE BUS CONFIGURATION 122 123# 124# ISA bus 125# 126device isa 127 128# 129# Options for `isa': 130# 131# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A 132# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 133# This option breaks suspend/resume on some portables. 134# 135# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A 136# interrupt controller. This saves about 0.7-1.25 usec for each interrupt. 137# Automatic EOI is documented not to work for for the slave with the 138# original i8259A, but it works for some clones and some integrated 139# versions. 140# 141# MAXMEM specifies the amount of RAM on the machine; if this is not 142# specified, FreeBSD will first read the amount of memory from the CMOS 143# RAM, so the amount of memory will initially be limited to 64MB or 16MB 144# depending on the BIOS. If the BIOS reports 64MB, a memory probe will 145# then attempt to detect the installed amount of RAM. If this probe 146# fails to detect >64MB RAM you will have to use the MAXMEM option. 147# The amount is in kilobytes, so for a machine with 128MB of RAM, it would 148# be 131072 (128 * 1024). 149# 150# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to 151# reset the CPU for reboot. This is needed on some systems with broken 152# keyboard controllers. 153 154options AUTO_EOI_1 155#options AUTO_EOI_2 156 157options MAXMEM=(128*1024) 158#options BROKEN_KEYBOARD_RESET 159 160# 161# PCI bus & PCI options: 162# 163device pci 164 165# 166# AGP GART support 167device agp 168 169 170##################################################################### 171# HARDWARE DEVICE CONFIGURATION 172 173# 174# Mandatory devices: 175# 176 177# 178# Optional devices: 179# 180 181# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create 182# the /dev/3dfx0 device to work with glide implementations. This should get 183# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as 184# the tdfx DRI module from XFree86 and is completely unrelated. 185# 186# To enable Linuxulator support, one must also include COMPAT_LINUX in the 187# config as well, or you will not have the dependencies. The other option 188# is to load both as modules. 189 190device tdfx # Enable 3Dfx Voodoo support 191#X#options TDFX_LINUX # Enable Linuxulator support 192 193# 194# ACPI support using the Intel ACPI Component Architecture reference 195# implementation. 196# 197# ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer 198# kernel environment variables to select initial debugging levels for the 199# Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER 200# defined when it is built). 201# 202# ACPI_MAX_THREADS sets the number of task threads started. 203# 204# ACPI_NO_SEMAPHORES makes the AcpiOs*Semaphore routines a no-op. 205# 206# ACPICA_PEDANTIC enables strict checking of AML. Our default is to 207# relax these checks to allow code generated by the Microsoft compiler 208# to still execute. 209# 210# Note that building ACPI into the kernel is deprecated; the module is 211# normally loaded automatically by the loader. 212# 213device acpi 214options ACPI_DEBUG 215options ACPI_MAX_THREADS=1 216#!options ACPI_NO_SEMAPHORES 217#!options ACPICA_PEDANTIC 218 219# DRM options: 220# mgadrm: AGP Matrox G200, G400, G450, G550 221# r128drm: ATI Rage 128 222# radeondrm: ATI Radeon up to 9000/9100 223# sisdrm: SiS 300/305,540,630 224# tdfxdrm: 3dfx Voodoo 3/4/5 and Banshee 225# DRM_DEBUG: include debug printfs, very slow 226# 227# mga requires AGP in the kernel, and it is recommended 228# for AGP r128 and radeon cards. 229 230device mgadrm 231device "r128drm" 232device radeondrm 233device sisdrm 234device tdfxdrm 235 236options DRM_DEBUG 237 238# 239# Network interfaces: 240# 241 242# ath: Atheros a/b/g WiFi adapters (requires ath_hal and wlan) 243 244#X#device ath 245#X#device ath_hal # Atheros HAL (includes binary component) 246device wlan # 802.11 layer 247 248# 249# ATA raid adapters 250# 251#XXX this stores pointers in a 32bit field that is defined by the hardware 252#device pst 253 254# 255# SCSI host adapters: 256# 257 258# 259# Adaptec FSA RAID controllers, including integrated DELL controllers, 260# the Dell PERC 2/QC and the HP NetRAID-4M 261device aac 262device aacp # SCSI Passthrough interface (optional, CAM required) 263 264# 265# IBM (now Adaptec) ServeRAID controllers 266device ips 267 268# 269# SafeNet crypto driver: can be moved to the MI NOTES as soon as 270# it's tested on a big-endian machine 271# 272device safe # SafeNet 1141 273options SAFE_DEBUG # enable debugging support: hw.safe.debug 274options SAFE_RNDTEST # enable rndtest support 275 276##################################################################### 277 278# 279# Miscellaneous hardware: 280# 281# digi: Digiboard driver 282 283# Notes on the Specialix SI/XIO driver: 284# The host card is memory, not IO mapped. 285# The Rev 1 host cards use a 64K chunk, on a 32K boundary. 286# The Rev 2 host cards use a 32K chunk, on a 32K boundary. 287# The cards can use an IRQ of 11, 12 or 15. 288 289device digi 290hint.digi.0.at="isa" 291hint.digi.0.port="0x104" 292hint.digi.0.maddr="0xd0000" 293# BIOS & FEP/OS components of device digi. 294device digi_CX 295device digi_CX_PCI 296device digi_EPCX 297device digi_EPCX_PCI 298device digi_Xe 299device digi_Xem 300device digi_Xr 301# HOT1 Xilinx 6200 card (http://www.vcc.com/) 302device xrpu 303 304# 305# Laptop/Notebook options: 306# 307 308 309# 310# I2C Bus 311# 312 313#--------------------------------------------------------------------------- 314 315# 316# Set the number of PV entries per process. Increasing this can 317# stop panics related to heavy use of shared memory. However, that can 318# (combined with large amounts of physical memory) cause panics at 319# boot time due the kernel running out of VM space. 320# 321# If you're tweaking this, you might also want to increase the sysctls 322# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target". 323# 324# The value below is the one more than the default. 325# 326options PMAP_SHPGPERPROC=201 327 328 329##################################################################### 330# ABI Emulation 331 332#XXX keep these here for now and reactivate when support for emulating 333#XXX these 32 bit binaries is added. 334 335# Enable iBCS2 runtime support for SCO and ISC binaries 336#X#options IBCS2 337 338# Emulate spx device for client side of SVR3 local X interface 339#X#options SPX_HACK 340 341# Enable Linux ABI emulation 342#X#options COMPAT_LINUX 343 344# Enable the linux-like proc filesystem support (requires COMPAT_LINUX 345# and PSEUDOFS) 346#X#options LINPROCFS 347 348# 349# SysVR4 ABI emulation 350# 351# The svr4 ABI emulator can be statically compiled into the kernel or loaded as 352# a KLD module. 353# The STREAMS network emulation code can also be compiled statically or as a 354# module. If loaded as a module, it must be loaded before the svr4 module 355# (the /usr/sbin/svr4 script does this for you). If compiling statically, 356# the `streams' device must be configured into any kernel which also 357# specifies COMPAT_SVR4. It is possible to have a statically-configured 358# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4 359# script understands that it doesn't need to load the `streams' module under 360# those circumstances. 361# Caveat: At this time, `options KTRACE' is required for the svr4 emulator 362# (whether static or dynamic). 363# 364#X#options COMPAT_SVR4 # build emulator statically 365#X#options DEBUG_SVR4 # enable verbose debugging 366#X#device streams # STREAMS network driver (required for svr4). 367 368 369##################################################################### 370# VM OPTIONS 371 372# KSTACK_PAGES is the number of memory pages to assign to the kernel 373# stack of each thread. 374 375options KSTACK_PAGES=3 376 377##################################################################### 378 379# More undocumented options for linting. 380# Note that documenting these are not considered an affront. 381 382options FB_INSTALL_CDEV # install a CDEV entry in /dev 383 384# PECOFF module (Win32 Execution Format) 385#X#options PECOFF_SUPPORT 386#X#options PECOFF_DEBUG 387 388options ENABLE_ALART 389options KBDIO_DEBUG=2 390options KBD_MAXRETRY=4 391options KBD_MAXWAIT=6 392options KBD_RESETDELAY=201 393 394options PSM_DEBUG=1 395 396options TIMER_FREQ=((14318182+6)/12) 397 398options VM_KMEM_SIZE 399options VM_KMEM_SIZE_MAX 400options VM_KMEM_SIZE_SCALE 401 402############################################################### 403# Broken stuff that shouldn't really be broken 404 405# machine/ioctl_meteor.h and machine/bt848.h 406nodevice bktr 407 408# pointer/int stuff 409nodevice mgadrm 410nodevice "r128drm" 411nodevice radeondrm 412nodevice sisdrm 413nodevice tdfxdrm 414 415# missing conf lines (must be fixed ASAP) 416nooption SC_DFLT_FONT 417nooption UKBD_DFLT_KEYMAP 418nooption ATKBD_DFLT_KEYMAP 419nooption PMAP_SHPGPERPROC 420nooption CLK_USE_I8254_CALIBRATION 421# XXX dead option 422nooption CLK_USE_TSC_CALIBRATION 423