MFC r203691:

[FreeBSD/stable/8.git] / sys / amd64 / conf / NOTES

#
# 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

\f
#####################################################################
# 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


\f
#####################################################################
# 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

\f
#####################################################################
# 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

\f
#####################################################################
# CLOCK OPTIONS

# Provide read/write access to the memory in the clock chip.
device          nvram           # Access to rtc cmos via /dev/nvram

\f
#####################################################################
# 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!

\f
#####################################################################
# 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

\f
#####################################################################
# 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
#       Requires the ipw firmware module
# iwi:  Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 adapters
#       Requires the iwi firmware module
# iwn:  Intel Wireless WiFi Link 4965/1000/5000/6000 802.11 network adapters
#       Requires the iwn firmware module
# mwl:  Marvell 88W8363 IEEE 802.11 adapter
#       Requires the mwl firmware module
# 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
#       Requires the wpi firmware module

device          ed
options         ED_3C503
options         ED_HPP
options         ED_SIC
device          ipw
device          iwi
device          iwn
device          mwl
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

# IEEE 802.11 adapter firmware modules

# Intel PRO/Wireless 2100 firmware:
#   ipwfw:              BSS/IBSS/monitor mode firmware
#   ipwbssfw:           BSS mode firmware
#   ipwibssfw:          IBSS mode firmware
#   ipwmonitorfw:       Monitor mode firmware
# Intel PRO/Wireless 2200BG/2225BG/2915ABG firmware:
#   iwifw:              BSS/IBSS/monitor mode firmware
#   iwibssfw:           BSS mode firmware
#   iwiibssfw:          IBSS mode firmware
#   iwimonitorfw:       Monitor mode firmware
# Intel Wireless WiFi Link 4965/1000/5000/6000 series firmware:
#   iwnfw:              Single module to support the 4965/1000/5000/5150/6000
#   iwn4965fw:          Specific module for the 4965 only
#   iwn1000fw:          Specific module for the 1000 only
#   iwn5000fw:          Specific module for the 5000 only
#   iwn5150fw:          Specific module for the 5150 only
#   iwn6000fw:          Specific module for the 6000 only
# mwlfw:        Marvell 88W8363 firmware
# wpifw:        Intel 3945ABG Wireless LAN Controller firmware

device          iwifw
device          iwibssfw
device          iwiibssfw
device          iwimonitorfw
device          ipwfw
device          ipwbssfw
device          ipwibssfw
device          ipwmonitorfw
device          iwnfw
device          iwn4965fw
device          iwn1000fw
device          iwn5000fw
device          iwn5150fw
device          iwn6000fw
device          mwlfw
device          wpifw

#
#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
# amdsbwd: AMD SB7xx watchdog timer
#
device          ichwd
device          amdsbwd

#
# 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

\f
#####################################################################
# 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_FREEBSD32

# 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_FREEBSD32)
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).

\f
#####################################################################
# 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