freebsd-dev/sys/amd64/conf/NOTES
Bjoern A. Zeeb 4507f02e0e lindev(4) [1] is supposed to be a collection of linux-specific pseudo
devices that we also support, just not by default (thus only LINT or
module builds by default).

While currently there is only "/dev/full" [2], we are planning to see more
in the future.  We may decide to change the module/dependency logic in the
future should the list grow too long.

This is not part of linux.ko as also non-linux binaries like kFreeBSD
userland or ports can make use of this as well.

Suggested by:	rwatson [1] (name)
Submitted by:	ed [2]
Discussed with:	markm, ed, rwatson, kib (weeks ago)
Reviewed by:	rwatson, brueffer (prev. version)
PR:		kern/68961
MFC after:	6 weeks
2009-09-26 12:45:28 +00:00

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#
# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
#
# This file contains machine dependent kernel configuration notes. For
# machine independent notes, look in /sys/conf/NOTES.
#
# $FreeBSD$
#
#
# We want LINT to cover profiling as well.
profile 2
#####################################################################
# SMP OPTIONS:
#
# Notes:
#
# IPI_PREEMPTION instructs the kernel to preempt threads running on other
# CPUS if needed. Relies on the PREEMPTION option
# Optional:
options IPI_PREEMPTION
device atpic # Optional legacy pic support
device mptable # Optional MPSPEC mptable support
#
# Watchdog routines.
#
options MP_WATCHDOG
#####################################################################
# CPU OPTIONS
#
# You must specify at least one CPU (the one you intend to run on);
# deleting the specification for CPUs you don't need to use may make
# parts of the system run faster.
#
cpu HAMMER # aka K8, aka Opteron & Athlon64
#
# Options for CPU features.
#
#
# PERFMON causes the driver for Pentium/Pentium Pro performance counters
# to be compiled. See perfmon(4) for more information.
#
#XXX#options PERFMON
#####################################################################
# NETWORKING OPTIONS
#
# DEVICE_POLLING adds support for mixed interrupt-polling handling
# of network device drivers, which has significant benefits in terms
# of robustness to overloads and responsivity, as well as permitting
# accurate scheduling of the CPU time between kernel network processing
# and other activities. The drawback is a moderate (up to 1/HZ seconds)
# potential increase in response times.
# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
# to achieve smoother behaviour.
# Additionally, you can enable/disable polling at runtime with help of
# the ifconfig(8) utility, and select the CPU fraction reserved to
# userland with the sysctl variable kern.polling.user_frac
# (default 50, range 0..100).
#
# Not all device drivers support this mode of operation at the time of
# this writing. See polling(4) for more details.
options DEVICE_POLLING
# BPF_JITTER adds support for BPF just-in-time compiler.
options BPF_JITTER
#####################################################################
# CLOCK OPTIONS
# Provide read/write access to the memory in the clock chip.
device nvram # Access to rtc cmos via /dev/nvram
#####################################################################
# MISCELLANEOUS DEVICES AND OPTIONS
device speaker #Play IBM BASIC-style noises out your speaker
hint.speaker.0.at="isa"
hint.speaker.0.port="0x61"
device gzip #Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
#####################################################################
# HARDWARE BUS CONFIGURATION
#
# ISA bus
#
device isa
#
# Options for `isa':
#
# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
# interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
# This option breaks suspend/resume on some portables.
#
# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
# interrupt controller. This saves about 0.7-1.25 usec for each interrupt.
# Automatic EOI is documented not to work for for the slave with the
# original i8259A, but it works for some clones and some integrated
# versions.
#
# MAXMEM specifies the amount of RAM on the machine; if this is not
# specified, FreeBSD will first read the amount of memory from the CMOS
# RAM, so the amount of memory will initially be limited to 64MB or 16MB
# depending on the BIOS. If the BIOS reports 64MB, a memory probe will
# then attempt to detect the installed amount of RAM. If this probe
# fails to detect >64MB RAM you will have to use the MAXMEM option.
# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
# be 131072 (128 * 1024).
#
# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
# reset the CPU for reboot. This is needed on some systems with broken
# keyboard controllers.
options AUTO_EOI_1
#options AUTO_EOI_2
options MAXMEM=(128*1024)
#options BROKEN_KEYBOARD_RESET
#
# PCI bus & PCI options:
#
device pci
#
# AGP GART support
device agp
#
# AGP debugging.
#
options AGP_DEBUG
#####################################################################
# HARDWARE DEVICE CONFIGURATION
# To include support for VGA VESA video modes
options VESA
# Turn on extra debugging checks and output for VESA support.
options VESA_DEBUG
device dpms # DPMS suspend & resume via VESA BIOS
# x86 real mode BIOS emulator, required by atkbdc/dpms/vesa
options X86BIOS
#
# Optional devices:
#
# PS/2 mouse
device psm
hint.psm.0.at="atkbdc"
hint.psm.0.irq="12"
# Options for psm:
options PSM_HOOKRESUME #hook the system resume event, useful
#for some laptops
options PSM_RESETAFTERSUSPEND #reset the device at the resume event
# The keyboard controller; it controls the keyboard and the PS/2 mouse.
device atkbdc
hint.atkbdc.0.at="isa"
hint.atkbdc.0.port="0x060"
# The AT keyboard
device atkbd
hint.atkbd.0.at="atkbdc"
hint.atkbd.0.irq="1"
# Options for atkbd:
options ATKBD_DFLT_KEYMAP # specify the built-in keymap
makeoptions ATKBD_DFLT_KEYMAP=jp.106
# `flags' for atkbd:
# 0x01 Force detection of keyboard, else we always assume a keyboard
# 0x02 Don't reset keyboard, useful for some newer ThinkPads
# 0x03 Force detection and avoid reset, might help with certain
# dockingstations
# 0x04 Old-style (XT) keyboard support, useful for older ThinkPads
# Video card driver for VGA adapters.
device vga
hint.vga.0.at="isa"
# Options for vga:
# Try the following option if the mouse pointer is not drawn correctly
# or font does not seem to be loaded properly. May cause flicker on
# some systems.
options VGA_ALT_SEQACCESS
# If you can dispense with some vga driver features, you may want to
# use the following options to save some memory.
#options VGA_NO_FONT_LOADING # don't save/load font
#options VGA_NO_MODE_CHANGE # don't change video modes
# Older video cards may require this option for proper operation.
options VGA_SLOW_IOACCESS # do byte-wide i/o's to TS and GDC regs
# The following option probably won't work with the LCD displays.
options VGA_WIDTH90 # support 90 column modes
# Debugging.
options VGA_DEBUG
# Linear framebuffer driver for S3 VESA 1.2 cards. Works on top of VESA.
device s3pci
# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
# the /dev/3dfx0 device to work with glide implementations. This should get
# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
# the tdfx DRI module from XFree86 and is completely unrelated.
#
# To enable Linuxulator support, one must also include COMPAT_LINUX in the
# config as well. The other option is to load both as modules.
device tdfx # Enable 3Dfx Voodoo support
#XXX#device tdfx_linux # Enable Linuxulator support
#
# ACPI support using the Intel ACPI Component Architecture reference
# implementation.
#
# ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
# kernel environment variables to select initial debugging levels for the
# Intel ACPICA code. (Note that the Intel code must also have USE_DEBUGGER
# defined when it is built).
device acpi
options ACPI_DEBUG
# The cpufreq(4) driver provides support for non-ACPI CPU frequency control
device cpufreq
# Direct Rendering modules for 3D acceleration.
device drm # DRM core module required by DRM drivers
device i915drm # Intel i830 through i915
device mach64drm # ATI Rage Pro, Rage Mobility P/M, Rage XL
device mgadrm # AGP Matrox G200, G400, G450, G550
device r128drm # ATI Rage 128
device radeondrm # ATI Radeon
device savagedrm # S3 Savage3D, Savage4
device sisdrm # SiS 300/305, 540, 630
device tdfxdrm # 3dfx Voodoo 3/4/5 and Banshee
options DRM_DEBUG # Include debug printfs (slow)
#
# Network interfaces:
#
# ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
# HP PC Lan+, various PC Card devices
# (requires miibus)
# ipw: Intel PRO/Wireless 2100 IEEE 802.11 adapter
# iwi: Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
# iwn: Intel Wireless WiFi Link 4965AGN 802.11 network adapters
# nfe: nVidia nForce MCP on-board Ethernet Networking (BSD open source)
# nve: nVidia nForce MCP on-board Ethernet Networking
# ral: Ralink Technology IEEE 802.11 wireless adapter
# wpi: Intel 3945ABG Wireless LAN controller
device ed
options ED_3C503
options ED_HPP
options ED_SIC
device iwi
device iwn
device ipw
device nfe
device nve
device ral
device wpi
device ath # Atheros pci/cardbus NIC's
device ath_hal # pci/cardbus chip support
options AH_SUPPORT_AR5416 # enable AR5416 tx/rx descriptors
device ath_rate_sample # SampleRate tx rate control for ath
#device ath_rate_amrr # AMRR rate control for ath driver
#device ath_rate_onoe # Onoe rate control for ath driver
#
#XXX this stores pointers in a 32bit field that is defined by the hardware
#device pst
#
# Areca 11xx and 12xx series of SATA II RAID controllers.
# CAM is required.
#
device arcmsr # Areca SATA II RAID
#
# 3ware 9000 series PATA/SATA RAID controller driver and options.
# The driver is implemented as a SIM, and so, needs the CAM infrastructure.
#
options TWA_DEBUG # 0-10; 10 prints the most messages.
options TWA_FLASH_FIRMWARE # firmware image bundled when defined.
device twa # 3ware 9000 series PATA/SATA RAID
#
# SCSI host adapters:
#
# ncv: NCR 53C500 based SCSI host adapters.
# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
# stg: TMC 18C30, 18C50 based SCSI host adapters.
device ncv
device nsp
device stg
#
# Adaptec FSA RAID controllers, including integrated DELL controllers,
# the Dell PERC 2/QC and the HP NetRAID-4M
device aac
device aacp # SCSI Passthrough interface (optional, CAM required)
#
# Highpoint RocketRAID 182x.
device hptmv
#
# Highpoint RocketRAID. Supports RR172x, RR222x, RR2240, RR232x, RR2340,
# RR2210, RR174x, RR2522, RR231x, RR230x.
device hptrr
#
# Highpoint RocketRaid 3xxx series SATA RAID
device hptiop
#
# IBM (now Adaptec) ServeRAID controllers
device ips
#
# SafeNet crypto driver: can be moved to the MI NOTES as soon as
# it's tested on a big-endian machine
#
device safe # SafeNet 1141
options SAFE_DEBUG # enable debugging support: hw.safe.debug
options SAFE_RNDTEST # enable rndtest support
#####################################################################
#
# Miscellaneous hardware:
#
# ipmi: Intelligent Platform Management Interface
# pbio: Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
# smbios: DMI/SMBIOS entry point
# vpd: Vital Product Data kernel interface
# asmc: Apple System Management Controller
# si: Specialix International SI/XIO or SX intelligent serial card
# Notes on the Specialix SI/XIO driver:
# The host card is memory, not IO mapped.
# The Rev 1 host cards use a 64K chunk, on a 32K boundary.
# The Rev 2 host cards use a 32K chunk, on a 32K boundary.
# The cards can use an IRQ of 11, 12 or 15.
device ipmi
device pbio
hint.pbio.0.at="isa"
hint.pbio.0.port="0x360"
device smbios
device vpd
device asmc
#device si
#
# Laptop/Notebook options:
#
#
# I2C Bus
#
#
# Hardware watchdog timers:
#
# ichwd: Intel ICH watchdog timer
#
device ichwd
#
# Temperature sensors:
#
# coretemp: on-die sensor on Intel Core and newer CPUs
# amdtemp: on-die sensor on AMD K8/K10/K11 CPUs
#
device coretemp
device amdtemp
#
# CPU control pseudo-device. Provides access to MSRs, CPUID info and
# microcode update feature.
#
device cpuctl
#
# System Management Bus (SMB)
#
options ENABLE_ALART # Control alarm on Intel intpm driver
#
# Set the number of PV entries per process. Increasing this can
# stop panics related to heavy use of shared memory. However, that can
# (combined with large amounts of physical memory) cause panics at
# boot time due the kernel running out of VM space.
#
# If you're tweaking this, you might also want to increase the sysctls
# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
#
# The value below is the one more than the default.
#
options PMAP_SHPGPERPROC=201
#####################################################################
# ABI Emulation
#XXX keep these here for now and reactivate when support for emulating
#XXX these 32 bit binaries is added.
# Enable 32-bit runtime support for FreeBSD/i386 binaries.
options COMPAT_IA32
# Enable iBCS2 runtime support for SCO and ISC binaries
#XXX#options IBCS2
# Emulate spx device for client side of SVR3 local X interface
#XXX#options SPX_HACK
# Enable Linux ABI emulation
#XXX#options COMPAT_LINUX
# Enable 32-bit Linux ABI emulation (requires COMPAT_43 and COMPAT_IA32)
options COMPAT_LINUX32
# Enable the linux-like proc filesystem support (requires COMPAT_LINUX32
# and PSEUDOFS)
options LINPROCFS
#Enable the linux-like sys filesystem support (requires COMPAT_LINUX32
# and PSEUDOFS)
options LINSYSFS
#
# SysVR4 ABI emulation
#
# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
# a KLD module.
# The STREAMS network emulation code can also be compiled statically or as a
# module. If loaded as a module, it must be loaded before the svr4 module
# (the /usr/sbin/svr4 script does this for you). If compiling statically,
# the `streams' device must be configured into any kernel which also
# specifies COMPAT_SVR4. It is possible to have a statically-configured
# STREAMS device and a dynamically loadable svr4 emulator; the /usr/sbin/svr4
# script understands that it doesn't need to load the `streams' module under
# those circumstances.
# Caveat: At this time, `options KTRACE' is required for the svr4 emulator
# (whether static or dynamic).
#
#XXX#options COMPAT_SVR4 # build emulator statically
#XXX#options DEBUG_SVR4 # enable verbose debugging
#XXX#device streams # STREAMS network driver (required for svr4).
#####################################################################
# VM OPTIONS
# KSTACK_PAGES is the number of memory pages to assign to the kernel
# stack of each thread.
options KSTACK_PAGES=3
#####################################################################
# More undocumented options for linting.
# Note that documenting these are not considered an affront.
options FB_INSTALL_CDEV # install a CDEV entry in /dev
options KBDIO_DEBUG=2
options KBD_MAXRETRY=4
options KBD_MAXWAIT=6
options KBD_RESETDELAY=201
options PSM_DEBUG=1
options TIMER_FREQ=((14318182+6)/12)
options VM_KMEM_SIZE
options VM_KMEM_SIZE_MAX
options VM_KMEM_SIZE_SCALE
# Enable NDIS binary driver support
options NDISAPI
device ndis
# Linux-specific pseudo devices support
device lindev