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Commit a9913044 authored by Randy Dunlap's avatar Randy Dunlap Committed by Linus Torvalds
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[PATCH] kernel-parameters cleanup 

Fix typos & trailing whitespace.
Add blank lines in a few places.
Remove "AM53C974=" option:  driver does not exist.
Restrict to < 80 columns in most places (but don't split formatted
  command-line arguments).
Add a few option arguments for completeness.
Signed-off-by: default avatarRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 4196c3af
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Inline Side-by-side
Showing with 260 additions and 236 deletions
Documentation/kernel-parameters.txt
View file @ a9913044
......@@ -17,7 +17,7 @@ are specified on the kernel command line with the module name plus
usbcore.blinkenlights=1
The text in square brackets at the beginning of the description state the
The text in square brackets at the beginning of the description states the
restrictions on the kernel for the said kernel parameter to be valid. The
restrictions referred to are that the relevant option is valid if:
......@@ -27,8 +27,8 @@ restrictions referred to are that the relevant option is valid if:
APM Advanced Power Management support is enabled.
AX25 Appropriate AX.25 support is enabled.
CD Appropriate CD support is enabled.
DEVFS devfs support is enabled.
DRM Direct Rendering Management support is enabled.
DEVFS devfs support is enabled.
DRM Direct Rendering Management support is enabled.
EDD BIOS Enhanced Disk Drive Services (EDD) is enabled
EFI EFI Partitioning (GPT) is enabled
EIDE EIDE/ATAPI support is enabled.
......@@ -71,7 +71,7 @@ restrictions referred to are that the relevant option is valid if:
SERIAL Serial support is enabled.
SMP The kernel is an SMP kernel.
SPARC Sparc architecture is enabled.
SWSUSP Software suspension is enabled.
SWSUSP Software suspend is enabled.
TS Appropriate touchscreen support is enabled.
USB USB support is enabled.
USBHID USB Human Interface Device support is enabled.
......@@ -105,13 +105,13 @@ running once the system is up.
See header of drivers/scsi/53c7xx.c.
See also Documentation/scsi/ncr53c7xx.txt.
acpi= [HW,ACPI] Advanced Configuration and Power Interface
Format: { force | off | ht | strict }
acpi= [HW,ACPI] Advanced Configuration and Power Interface
Format: { force | off | ht | strict | noirq }
force -- enable ACPI if default was off
off -- disable ACPI if default was on
noirq -- do not use ACPI for IRQ routing
ht -- run only enough ACPI to enable Hyper Threading
strict -- Be less tolerant of platforms that are not
strict -- Be less tolerant of platforms that are not
strictly ACPI specification compliant.
See also Documentation/pm.txt, pci=noacpi
......@@ -119,20 +119,23 @@ running once the system is up.
acpi_sleep= [HW,ACPI] Sleep options
Format: { s3_bios, s3_mode }
See Documentation/power/video.txt
acpi_sci= [HW,ACPI] ACPI System Control Interrupt trigger mode
Format: { level | edge | high | low }
Format: { level | edge | high | low }
acpi_irq_balance [HW,ACPI] ACPI will balance active IRQs
default in APIC mode
acpi_irq_balance [HW,ACPI]
ACPI will balance active IRQs
default in APIC mode
acpi_irq_nobalance [HW,ACPI] ACPI will not move active IRQs (default)
default in PIC mode
acpi_irq_nobalance [HW,ACPI]
ACPI will not move active IRQs (default)
default in PIC mode
acpi_irq_pci= [HW,ACPI] If irq_balance, Clear listed IRQs for use by PCI
acpi_irq_pci= [HW,ACPI] If irq_balance, clear listed IRQs for
use by PCI
Format: <irq>,<irq>...
acpi_irq_isa= [HW,ACPI] If irq_balance, Mark listed IRQs used by ISA
acpi_irq_isa= [HW,ACPI] If irq_balance, mark listed IRQs used by ISA
Format: <irq>,<irq>...
acpi_osi= [HW,ACPI] empty param disables _OSI
......@@ -145,14 +148,14 @@ running once the system is up.
acpi_dbg_layer= [HW,ACPI]
Format: <int>
Each bit of the <int> indicates an acpi debug layer,
Each bit of the <int> indicates an ACPI debug layer,
1: enable, 0: disable. It is useful for boot time
debugging. After system has booted up, it can be set
via /proc/acpi/debug_layer.
acpi_dbg_level= [HW,ACPI]
Format: <int>
Each bit of the <int> indicates an acpi debug level,
Each bit of the <int> indicates an ACPI debug level,
1: enable, 0: disable. It is useful for boot time
debugging. After system has booted up, it can be set
via /proc/acpi/debug_level.
......@@ -161,12 +164,13 @@ running once the system is up.
acpi_generic_hotkey [HW,ACPI]
Allow consolidated generic hotkey driver to
over-ride platform specific driver.
override platform specific driver.
See also Documentation/acpi-hotkey.txt.
enable_timer_pin_1 [i386,x86-64]
Enable PIN 1 of APIC timer
Can be useful to work around chipset bugs (in particular on some ATI chipsets)
Can be useful to work around chipset bugs
(in particular on some ATI chipsets).
The kernel tries to set a reasonable default.
disable_timer_pin_1 [i386,x86-64]
......@@ -182,7 +186,7 @@ running once the system is up.
adlib= [HW,OSS]
Format: <io>
advansys= [HW,SCSI]
See header of drivers/scsi/advansys.c.
......@@ -192,7 +196,7 @@ running once the system is up.
aedsp16= [HW,OSS] Audio Excel DSP 16
Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq>
See also header of sound/oss/aedsp16.c.
aha152x= [HW,SCSI]
See Documentation/scsi/aha152x.txt.
......@@ -205,10 +209,6 @@ running once the system is up.
aic79xx= [HW,SCSI]
See Documentation/scsi/aic79xx.txt.
AM53C974= [HW,SCSI]
Format: <host-scsi-id>,<target-scsi-id>,<max-rate>,<max-offset>
See also header of drivers/scsi/AM53C974.c.
amijoy.map= [HW,JOY] Amiga joystick support
Map of devices attached to JOY0DAT and JOY1DAT
Format: <a>,<b>
......@@ -219,23 +219,24 @@ running once the system is up.
connected to one of 16 gameports
Format: <type1>,<type2>,..<type16>
apc= [HW,SPARC] Power management functions (SPARCstation-4/5 + deriv.)
apc= [HW,SPARC]
Power management functions (SPARCstation-4/5 + deriv.)
Format: noidle
Disable APC CPU standby support. SPARCstation-Fox does
not play well with APC CPU idle - disable it if you have
APC and your system crashes randomly.
apic= [APIC,i386] Change the output verbosity whilst booting
apic= [APIC,i386] Change the output verbosity whilst booting
Format: { quiet (default) | verbose | debug }
Change the amount of debugging information output
when initialising the APIC and IO-APIC components.
apm= [APM] Advanced Power Management
See header of arch/i386/kernel/apm.c.
applicom= [HW]
Format: <mem>,<irq>
arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
Format: <io>,<irq>,<nodeID>
......@@ -250,38 +251,40 @@ running once the system is up.
atkbd.reset= [HW] Reset keyboard during initialization
atkbd.set= [HW] Select keyboard code set
Format: <int> (2 = AT (default) 3 = PS/2)
atkbd.set= [HW] Select keyboard code set
Format: <int> (2 = AT (default), 3 = PS/2)
atkbd.scroll= [HW] Enable scroll wheel on MS Office and similar
keyboards
atkbd.softraw= [HW] Choose between synthetic and real raw mode
Format: <bool> (0 = real, 1 = synthetic (default))
atkbd.softrepeat=
[HW] Use software keyboard repeat
atkbd.softrepeat= [HW]
Use software keyboard repeat
autotest [IA64]
awe= [HW,OSS] AWE32/SB32/AWE64 wave table synth
Format: <io>,<memsize>,<isapnp>
aztcd= [HW,CD] Aztech CD268 CDROM driver
Format: <io>,0x79 (?)
baycom_epp= [HW,AX25]
Format: <io>,<mode>
baycom_par= [HW,AX25] BayCom Parallel Port AX.25 Modem
Format: <io>,<mode>
See header of drivers/net/hamradio/baycom_par.c.
baycom_ser_fdx= [HW,AX25] BayCom Serial Port AX.25 Modem (Full Duplex Mode)
baycom_ser_fdx= [HW,AX25]
BayCom Serial Port AX.25 Modem (Full Duplex Mode)
Format: <io>,<irq>,<mode>[,<baud>]
See header of drivers/net/hamradio/baycom_ser_fdx.c.
baycom_ser_hdx= [HW,AX25] BayCom Serial Port AX.25 Modem (Half Duplex Mode)
baycom_ser_hdx= [HW,AX25]
BayCom Serial Port AX.25 Modem (Half Duplex Mode)
Format: <io>,<irq>,<mode>
See header of drivers/net/hamradio/baycom_ser_hdx.c.
......@@ -292,7 +295,8 @@ running once the system is up.
blkmtd_count=
bttv.card= [HW,V4L] bttv (bt848 + bt878 based grabber cards)
bttv.radio= Most important insmod options are available as kernel args too.
bttv.radio= Most important insmod options are available as
kernel args too.
bttv.pll= See Documentation/video4linux/bttv/Insmod-options
bttv.tuner= and Documentation/video4linux/bttv/CARDLIST
......@@ -318,15 +322,17 @@ running once the system is up.
checkreqprot [SELINUX] Set initial checkreqprot flag value.
Format: { "0" | "1" }
See security/selinux/Kconfig help text.
0 -- check protection applied by kernel (includes any implied execute protection).
0 -- check protection applied by kernel (includes
any implied execute protection).
1 -- check protection requested by application.
Default value is set via a kernel config option.
Value can be changed at runtime via /selinux/checkreqprot.
clock= [BUGS=IA-32, HW] gettimeofday timesource override.
Value can be changed at runtime via
/selinux/checkreqprot.
clock= [BUGS=IA-32,HW] gettimeofday timesource override.
Forces specified timesource (if avaliable) to be used
when calculating gettimeofday(). If specicified timesource
is not avalible, it defaults to PIT.
when calculating gettimeofday(). If specicified
timesource is not avalible, it defaults to PIT.
Format: { pit | tsc | cyclone | pmtmr }
hpet= [IA-32,HPET] option to disable HPET and use PIT.
......@@ -336,17 +342,19 @@ running once the system is up.
Format: { auto | [<io>,][<irq>] }
com20020= [HW,NET] ARCnet - COM20020 chipset
Format: <io>[,<irq>[,<nodeID>[,<backplane>[,<ckp>[,<timeout>]]]]]
Format:
<io>[,<irq>[,<nodeID>[,<backplane>[,<ckp>[,<timeout>]]]]]
com90io= [HW,NET] ARCnet - COM90xx chipset (IO-mapped buffers)
Format: <io>[,<irq>]
com90xx= [HW,NET] ARCnet - COM90xx chipset (memory-mapped buffers)
com90xx= [HW,NET]
ARCnet - COM90xx chipset (memory-mapped buffers)
Format: <io>[,<irq>[,<memstart>]]
condev= [HW,S390] console device
conmode=
console= [KNL] Output console device and options.
tty<n> Use the virtual console device <n>.
......@@ -367,7 +375,8 @@ running once the system is up.
options are the same as for ttyS, above.
cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver
Format: <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]
Format:
<first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]
cpia_pp= [HW,PPT]
Format: { parport<nr> | auto | none }
......@@ -384,10 +393,10 @@ running once the system is up.
cs89x0_media= [HW,NET]
Format: { rj45 | aui | bnc }
cyclades= [HW,SERIAL] Cyclades multi-serial port adapter.
dasd= [HW,NET]
dasd= [HW,NET]
See header of drivers/s390/block/dasd_devmap.c.
db9.dev[2|3]= [HW,JOY] Multisystem joystick support via parallel port
......@@ -406,7 +415,7 @@ running once the system is up.
dhash_entries= [KNL]
Set number of hash buckets for dentry cache.
digi= [HW,SERIAL]
IO parameters + enable/disable command.
......@@ -424,11 +433,11 @@ running once the system is up.
dtc3181e= [HW,SCSI]
earlyprintk= [IA-32, X86-64]
earlyprintk= [IA-32,X86-64]
earlyprintk=vga
earlyprintk=serial[,ttySn[,baudrate]]
Append ,keep to not disable it when the real console
Append ",keep" to not disable it when the real console
takes over.
Only vga or serial at a time, not both.
......@@ -451,7 +460,7 @@ running once the system is up.
Format: {"of[f]" | "sk[ipmbr]"}
See comment in arch/i386/boot/edd.S
eicon= [HW,ISDN]
eicon= [HW,ISDN]
Format: <id>,<membase>,<irq>
eisa_irq_edge= [PARISC,HW]
......@@ -462,12 +471,13 @@ running once the system is up.
arch/i386/kernel/cpu/cpufreq/elanfreq.c.
elevator= [IOSCHED]
Format: {"as"|"cfq"|"deadline"|"noop"}
See Documentation/block/as-iosched.txt
and Documentation/block/deadline-iosched.txt for details.
Format: {"as" | "cfq" | "deadline" | "noop"}
See Documentation/block/as-iosched.txt and
Documentation/block/deadline-iosched.txt for details.
elfcorehdr= [IA-32]
Specifies physical address of start of kernel core image
elf header.
Specifies physical address of start of kernel core
image elf header.
See Documentation/kdump.txt for details.
enforcing [SELINUX] Set initial enforcing status.
......@@ -485,7 +495,7 @@ running once the system is up.
es1371= [HW,OSS]
Format: <spdif>,[<nomix>,[<amplifier>]]
See also header of sound/oss/es1371.c.
ether= [HW,NET] Ethernet cards parameters
This option is obsoleted by the "netdev=" option, which
has equivalent usage. See its documentation for details.
......@@ -526,12 +536,13 @@ running once the system is up.
gus= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma16>
gvp11= [HW,SCSI]
hashdist= [KNL,NUMA] Large hashes allocated during boot
are distributed across NUMA nodes. Defaults on
for IA-64, off otherwise.
Format: 0 | 1 (for off | on)
hcl= [IA-64] SGI's Hardware Graph compatibility layer
......@@ -595,13 +606,13 @@ running once the system is up.
ide?= [HW] (E)IDE subsystem
Format: ide?=noprobe or chipset specific parameters.
See Documentation/ide.txt.
idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed
See Documentation/ide.txt.
idle= [HW]
Format: idle=poll or idle=halt
ihash_entries= [KNL]
Set number of hash buckets for inode cache.
......@@ -649,7 +660,7 @@ running once the system is up.
firmware running.
isapnp= [ISAPNP]
Format: <RDP>, <reset>, <pci_scan>, <verbosity>
Format: <RDP>,<reset>,<pci_scan>,<verbosity>
isolcpus= [KNL,SMP] Isolate CPUs from the general scheduler.
Format: <cpu number>,...,<cpu number>
......@@ -661,32 +672,33 @@ running once the system is up.
"number of CPUs in system - 1".
This option is the preferred way to isolate CPUs. The
alternative - manually setting the CPU mask of all tasks
in the system can cause problems and suboptimal load
balancer performance.
alternative -- manually setting the CPU mask of all
tasks in the system -- can cause problems and
suboptimal load balancer performance.
isp16= [HW,CD]
Format: <io>,<irq>,<dma>,<setup>
iucv= [HW,NET]
iucv= [HW,NET]
js= [HW,JOY] Analog joystick
See Documentation/input/joystick.txt.
keepinitrd [HW,ARM]
kstack=N [IA-32, X86-64] Print N words from the kernel stack
kstack=N [IA-32,X86-64] Print N words from the kernel stack
in oops dumps.
l2cr= [PPC]
lapic [IA-32,APIC] Enable the local APIC even if BIOS disabled it.
lapic [IA-32,APIC] Enable the local APIC even if BIOS
disabled it.
lasi= [HW,SCSI] PARISC LASI driver for the 53c700 chip
Format: addr:<io>,irq:<irq>
llsc*= [IA64]
See function print_params() in arch/ia64/sn/kernel/llsc4.c.
llsc*= [IA64] See function print_params() in
arch/ia64/sn/kernel/llsc4.c.
load_ramdisk= [RAM] List of ramdisks to load from floppy
See Documentation/ramdisk.txt.
......@@ -713,8 +725,9 @@ running once the system is up.
7 (KERN_DEBUG) debug-level messages
log_buf_len=n Sets the size of the printk ring buffer, in bytes.
Format is n, nk, nM. n must be a power of two. The
default is set in kernel config.
Format: { n | nk | nM }
n must be a power of two. The default size
is set in the kernel config file.
lp=0 [LP] Specify parallel ports to use, e.g,
lp=port[,port...] lp=none,parport0 (lp0 not configured, lp1 uses
......@@ -750,23 +763,23 @@ running once the system is up.
ltpc= [NET]
Format: <io>,<irq>,<dma>
mac5380= [HW,SCSI]
Format: <can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
mac5380= [HW,SCSI] Format:
<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
mac53c9x= [HW,SCSI]
Format: <num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
mac53c9x= [HW,SCSI] Format:
<num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
machvec= [IA64]
Force the use of a particular machine-vector (machvec) in a generic
kernel. Example: machvec=hpzx1_swiotlb
machvec= [IA64] Force the use of a particular machine-vector
(machvec) in a generic kernel.
Example: machvec=hpzx1_swiotlb
mad16= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma16>,<mpu_io>,<mpu_irq>,<joystick>
mad16= [HW,OSS] Format:
<io>,<irq>,<dma>,<dma16>,<mpu_io>,<mpu_irq>,<joystick>
maui= [HW,OSS]
Format: <io>,<irq>
max_loop= [LOOP] Maximum number of loopback devices that can
max_loop= [LOOP] Maximum number of loopback devices that can
be mounted
Format: <1-256>
......@@ -776,11 +789,11 @@ running once the system is up.
max_addr=[KMG] [KNL,BOOT,ia64] All physical memory greater than or
equal to this physical address is ignored.
max_luns= [SCSI] Maximum number of LUNs to probe
max_luns= [SCSI] Maximum number of LUNs to probe.
Should be between 1 and 2^32-1.
max_report_luns=
[SCSI] Maximum number of LUNs received
[SCSI] Maximum number of LUNs received.
Should be between 1 and 16384.
mca-pentium [BUGS=IA-32]
......@@ -796,11 +809,11 @@ running once the system is up.
md= [HW] RAID subsystems devices and level
See Documentation/md.txt.
mdacon= [MDA]
Format: <first>,<last>
Specifies range of consoles to be captured by the MDA.
mem=nn[KMG] [KNL,BOOT] Force usage of a specific amount of memory
Amount of memory to be used when the kernel is not able
to see the whole system memory or for test.
......@@ -851,15 +864,15 @@ running once the system is up.
MTD_Partition= [MTD]
Format: <name>,<region-number>,<size>,<offset>
MTD_Region= [MTD]
Format: <name>,<region-number>[,<base>,<size>,<buswidth>,<altbuswidth>]
MTD_Region= [MTD] Format:
<name>,<region-number>[,<base>,<size>,<buswidth>,<altbuswidth>]
mtdparts= [MTD]
See drivers/mtd/cmdline.c.
mtouchusb.raw_coordinates=
[HW] Make the MicroTouch USB driver use raw coordinates ('y', default)
or cooked coordinates ('n')
[HW] Make the MicroTouch USB driver use raw coordinates
('y', default) or cooked coordinates ('n')
n2= [NET] SDL Inc. RISCom/N2 synchronous serial card
......@@ -880,7 +893,9 @@ running once the system is up.
Format: <irq>,<io>,<mem_start>,<mem_end>,<name>
Note that mem_start is often overloaded to mean
something different and driver-specific.
This usage is only documented in each driver source
file if at all.
nfsaddrs= [NFS]
See Documentation/nfsroot.txt.
......@@ -893,8 +908,8 @@ running once the system is up.
emulation library even if a 387 maths coprocessor
is present.
noalign [KNL,ARM]
noalign [KNL,ARM]
noapic [SMP,APIC] Tells the kernel to not make use of any
IOAPICs that may be present in the system.
......@@ -905,19 +920,19 @@ running once the system is up.
on "Classic" PPC cores.
nocache [ARM]
nodisconnect [HW,SCSI,M68K] Disables SCSI disconnects.
noexec [IA-64]
noexec [IA-32, X86-64]
noexec [IA-32,X86-64]
noexec=on: enable non-executable mappings (default)
noexec=off: disable nn-executable mappings
nofxsr [BUGS=IA-32]
nohlt [BUGS=ARM]
no-hlt [BUGS=IA-32] Tells the kernel that the hlt
instruction doesn't work correctly and not to
use it.
......@@ -948,8 +963,9 @@ running once the system is up.
noresidual [PPC] Don't use residual data on PReP machines.
noresume [SWSUSP] Disables resume and restore original swap space.
noresume [SWSUSP] Disables resume and restores original swap
space.
no-scroll [VGA] Disables scrollback.
This is required for the Braillex ib80-piezo Braille
reader made by F.H. Papenmeier (Germany).
......@@ -965,16 +981,16 @@ running once the system is up.
nousb [USB] Disable the USB subsystem
nowb [ARM]
opl3= [HW,OSS]
Format: <io>
opl3sa= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>,<mpu_io>,<mpu_irq>
opl3sa2= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>,<mss_io>,<mpu_io>,<ymode>,<loopback>[,<isapnp>,<multiple]
opl3sa2= [HW,OSS] Format:
<io>,<irq>,<dma>,<dma2>,<mss_io>,<mpu_io>,<ymode>,<loopback>[,<isapnp>,<multiple]
oprofile.timer= [HW]
Use timer interrupt instead of performance counters
......@@ -993,36 +1009,33 @@ running once the system is up.
Format: <parport#>
parkbd.mode= [HW] Parallel port keyboard adapter mode of operation,
0 for XT, 1 for AT (default is AT).
Format: <mode>
parport=0 [HW,PPT] Specify parallel ports. 0 disables.
parport=auto Use 'auto' to force the driver to use
parport=0xBBB[,IRQ[,DMA]] any IRQ/DMA settings detected (the
default is to ignore detected IRQ/DMA
settings because of possible
conflicts). You can specify the base
address, IRQ, and DMA settings; IRQ and
DMA should be numbers, or 'auto' (for
using detected settings on that
particular port), or 'nofifo' (to avoid
using a FIFO even if it is detected).
Parallel ports are assigned in the
order they are specified on the command
line, starting with parport0.
parport_init_mode=
[HW,PPT] Configure VIA parallel port to
operate in specific mode. This is
necessary on Pegasos computer where
firmware has no options for setting up
parallel port mode and sets it to
spp. Currently this function knows
686a and 8231 chips.
Format: <mode>
parport= [HW,PPT] Specify parallel ports. 0 disables.
Format: { 0 | auto | 0xBBB[,IRQ[,DMA]] }
Use 'auto' to force the driver to use any
IRQ/DMA settings detected (the default is to
ignore detected IRQ/DMA settings because of
possible conflicts). You can specify the base
address, IRQ, and DMA settings; IRQ and DMA
should be numbers, or 'auto' (for using detected
settings on that particular port), or 'nofifo'
(to avoid using a FIFO even if it is detected).
Parallel ports are assigned in the order they
are specified on the command line, starting
with parport0.
parport_init_mode= [HW,PPT]
Configure VIA parallel port to operate in
a specific mode. This is necessary on Pegasos
computer where firmware has no options for setting
up parallel port mode and sets it to spp.
Currently this function knows 686a and 8231 chips.
Format: [spp|ps2|epp|ecp|ecpepp]
pas2= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma16>,<sb_io>,<sb_irq>,<sb_dma>,<sb_dma16>
pas2= [HW,OSS] Format:
<io>,<irq>,<dma>,<dma16>,<sb_io>,<sb_irq>,<sb_dma>,<sb_dma16>
pas16= [HW,SCSI]
See header of drivers/scsi/pas16.c.
......@@ -1032,64 +1045,67 @@ running once the system is up.
See header of drivers/block/paride/pcd.c.
See also Documentation/paride.txt.
pci=option[,option...] [PCI] various PCI subsystem options:
off [IA-32] don't probe for the PCI bus
bios [IA-32] force use of PCI BIOS, don't access
the hardware directly. Use this if your machine
has a non-standard PCI host bridge.
nobios [IA-32] disallow use of PCI BIOS, only direct
hardware access methods are allowed. Use this
if you experience crashes upon bootup and you
suspect they are caused by the BIOS.
conf1 [IA-32] Force use of PCI Configuration Mechanism 1.
conf2 [IA-32] Force use of PCI Configuration Mechanism 2.
nosort [IA-32] Don't sort PCI devices according to
order given by the PCI BIOS. This sorting is done
to get a device order compatible with older kernels.
biosirq [IA-32] Use PCI BIOS calls to get the interrupt
routing table. These calls are known to be buggy
on several machines and they hang the machine when used,
but on other computers it's the only way to get the
interrupt routing table. Try this option if the kernel
is unable to allocate IRQs or discover secondary PCI
buses on your motherboard.
rom [IA-32] Assign address space to expansion ROMs.
Use with caution as certain devices share address
decoders between ROMs and other resources.
irqmask=0xMMMM [IA-32] Set a bit mask of IRQs allowed to be assigned
automatically to PCI devices. You can make the kernel
exclude IRQs of your ISA cards this way.
pci=option[,option...] [PCI] various PCI subsystem options:
off [IA-32] don't probe for the PCI bus
bios [IA-32] force use of PCI BIOS, don't access
the hardware directly. Use this if your machine
has a non-standard PCI host bridge.
nobios [IA-32] disallow use of PCI BIOS, only direct
hardware access methods are allowed. Use this
if you experience crashes upon bootup and you
suspect they are caused by the BIOS.
conf1 [IA-32] Force use of PCI Configuration
Mechanism 1.
conf2 [IA-32] Force use of PCI Configuration
Mechanism 2.
nosort [IA-32] Don't sort PCI devices according to
order given by the PCI BIOS. This sorting is
done to get a device order compatible with
older kernels.
biosirq [IA-32] Use PCI BIOS calls to get the interrupt
routing table. These calls are known to be buggy
on several machines and they hang the machine
when used, but on other computers it's the only
way to get the interrupt routing table. Try
this option if the kernel is unable to allocate
IRQs or discover secondary PCI buses on your
motherboard.
rom [IA-32] Assign address space to expansion ROMs.
Use with caution as certain devices share
address decoders between ROMs and other
resources.
irqmask=0xMMMM [IA-32] Set a bit mask of IRQs allowed to be
assigned automatically to PCI devices. You can
make the kernel exclude IRQs of your ISA cards
this way.
pirqaddr=0xAAAAA [IA-32] Specify the physical address
of the PIRQ table (normally generated
by the BIOS) if it is outside the
F0000h-100000h range.
lastbus=N [IA-32] Scan all buses till bus #N. Can be useful
if the kernel is unable to find your secondary buses
and you want to tell it explicitly which ones they are.
assign-busses [IA-32] Always assign all PCI bus
numbers ourselves, overriding
whatever the firmware may have
done.
usepirqmask [IA-32] Honor the possible IRQ mask
stored in the BIOS $PIR table. This is
needed on some systems with broken
BIOSes, notably some HP Pavilion N5400
and Omnibook XE3 notebooks. This will
have no effect if ACPI IRQ routing is
enabled.
noacpi [IA-32] Do not use ACPI for IRQ routing
or for PCI scanning.
routeirq Do IRQ routing for all PCI devices.
This is normally done in pci_enable_device(),
so this option is a temporary workaround
for broken drivers that don't call it.
firmware [ARM] Do not re-enumerate the bus but
instead just use the configuration
from the bootloader. This is currently
used on IXP2000 systems where the
bus has to be configured a certain way
for adjunct CPUs.
of the PIRQ table (normally generated
by the BIOS) if it is outside the
F0000h-100000h range.
lastbus=N [IA-32] Scan all buses thru bus #N. Can be
useful if the kernel is unable to find your
secondary buses and you want to tell it
explicitly which ones they are.
assign-busses [IA-32] Always assign all PCI bus
numbers ourselves, overriding
whatever the firmware may have done.
usepirqmask [IA-32] Honor the possible IRQ mask stored
in the BIOS $PIR table. This is needed on
some systems with broken BIOSes, notably
some HP Pavilion N5400 and Omnibook XE3
notebooks. This will have no effect if ACPI
IRQ routing is enabled.
noacpi [IA-32] Do not use ACPI for IRQ routing
or for PCI scanning.
routeirq Do IRQ routing for all PCI devices.
This is normally done in pci_enable_device(),
so this option is a temporary workaround
for broken drivers that don't call it.
firmware [ARM] Do not re-enumerate the bus but instead
just use the configuration from the
bootloader. This is currently used on
IXP2000 systems where the bus has to be
configured a certain way for adjunct CPUs.
pcmv= [HW,PCMCIA] BadgePAD 4
......@@ -1127,19 +1143,20 @@ running once the system is up.
[ISAPNP] Exclude DMAs for the autoconfiguration
pnp_reserve_io= [ISAPNP] Exclude I/O ports for the autoconfiguration
Ranges are in pairs (I/O port base and size).
Ranges are in pairs (I/O port base and size).
pnp_reserve_mem=
[ISAPNP] Exclude memory regions for the autoconfiguration
[ISAPNP] Exclude memory regions for the
autoconfiguration.
Ranges are in pairs (memory base and size).
profile= [KNL] Enable kernel profiling via /proc/profile
{ schedule | <number> }
(param: schedule - profile schedule points}
(param: profile step/bucket size as a power of 2 for
statistical time based profiling)
Format: [schedule,]<number>
Param: "schedule" - profile schedule points.
Param: <number> - step/bucket size as a power of 2 for
statistical time based profiling.
processor.max_cstate= [HW, ACPI]
processor.max_cstate= [HW,ACPI]
Limit processor to maximum C-state
max_cstate=9 overrides any DMI blacklist limit.
......@@ -1147,27 +1164,28 @@ running once the system is up.
before loading.
See Documentation/ramdisk.txt.
psmouse.proto= [HW,MOUSE] Highest PS2 mouse protocol extension to
probe for (bare|imps|exps|lifebook|any).
psmouse.proto= [HW,MOUSE] Highest PS2 mouse protocol extension to
probe for; one of (bare|imps|exps|lifebook|any).
psmouse.rate= [HW,MOUSE] Set desired mouse report rate, in reports
per second.
psmouse.resetafter=
[HW,MOUSE] Try to reset the device after so many bad packets
psmouse.resetafter= [HW,MOUSE]
Try to reset the device after so many bad packets
(0 = never).
psmouse.resolution=
[HW,MOUSE] Set desired mouse resolution, in dpi.
psmouse.smartscroll=
[HW,MOUSE] Controls Logitech smartscroll autorepeat,
[HW,MOUSE] Controls Logitech smartscroll autorepeat.
0 = disabled, 1 = enabled (default).
pss= [HW,OSS] Personal Sound System (ECHO ESC614)
Format: <io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq>
Format:
<io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq>
pt. [PARIDE]
See Documentation/paride.txt.
quiet= [KNL] Disable log messages
r128= [HW,DRM]
raid= [HW,RAID]
......@@ -1176,10 +1194,9 @@ running once the system is up.
ramdisk= [RAM] Sizes of RAM disks in kilobytes [deprecated]
See Documentation/ramdisk.txt.
ramdisk_blocksize=
[RAM]
ramdisk_blocksize= [RAM]
See Documentation/ramdisk.txt.
ramdisk_size= [RAM] Sizes of RAM disks in kilobytes
New name for the ramdisk parameter.
See Documentation/ramdisk.txt.
......@@ -1195,7 +1212,8 @@ running once the system is up.
reserve= [KNL,BUGS] Force the kernel to ignore some iomem area
resume= [SWSUSP] Specify the partition device for software suspension
resume= [SWSUSP]
Specify the partition device for software suspend
rhash_entries= [KNL,NET]
Set number of hash buckets for route cache
......@@ -1225,7 +1243,7 @@ running once the system is up.
Format: <io>,<irq>,<dma>,<dma2>
sbni= [NET] Granch SBNI12 leased line adapter
sbpcd= [HW,CD] Soundblaster CD adapter
Format: <io>,<type>
See a comment before function sbpcd_setup() in
......@@ -1258,21 +1276,20 @@ running once the system is up.
serialnumber [BUGS=IA-32]
sg_def_reserved_size=
[SCSI]
sg_def_reserved_size= [SCSI]
sgalaxy= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>,<sgbase>
shapers= [NET]
Maximal number of shapers.
sim710= [SCSI,HW]
See header of drivers/scsi/sim710.c.
simeth= [IA-64]
simscsi=
sjcd= [HW,CD]
Format: <io>,<irq>,<dma>
See header of drivers/cdrom/sjcd.c.
......@@ -1403,10 +1420,10 @@ running once the system is up.
snd-wavefront= [HW,ALSA]
snd-ymfpci= [HW,ALSA]
sonicvibes= [HW,OSS]
Format: <reverb>
sonycd535= [HW,CD]
Format: <io>[,<irq>]
......@@ -1423,7 +1440,7 @@ running once the system is up.
sscape= [HW,OSS]
Format: <io>,<irq>,<dma>,<mpu_io>,<mpu_irq>
st= [HW,SCSI] SCSI tape parameters (buffers, etc.)
See Documentation/scsi/st.txt.
......@@ -1446,7 +1463,7 @@ running once the system is up.
stram_swap= [HW,M68k]
swiotlb= [IA-64] Number of I/O TLB slabs
switches= [HW,M68k]
sym53c416= [HW,SCSI]
......@@ -1479,14 +1496,16 @@ running once the system is up.
tp720= [HW,PS2]
trix= [HW,OSS] MediaTrix AudioTrix Pro
Format: <io>,<irq>,<dma>,<dma2>,<sb_io>,<sb_irq>,<sb_dma>,<mpu_io>,<mpu_irq>
Format:
<io>,<irq>,<dma>,<dma2>,<sb_io>,<sb_irq>,<sb_dma>,<mpu_io>,<mpu_irq>
tsdev.xres= [TS] Horizontal screen resolution.
tsdev.yres= [TS] Vertical screen resolution.
turbografx.map[2|3]=
[HW,JOY] TurboGraFX parallel port interface
Format: <port#>,<js1>,<js2>,<js3>,<js4>,<js5>,<js6>,<js7>
turbografx.map[2|3]= [HW,JOY]
TurboGraFX parallel port interface
Format:
<port#>,<js1>,<js2>,<js3>,<js4>,<js5>,<js6>,<js7>
See also Documentation/input/joystick-parport.txt
u14-34f= [HW,SCSI] UltraStor 14F/34F SCSI host adapter
......@@ -1502,17 +1521,18 @@ running once the system is up.
usbhid.mousepoll=
[USBHID] The interval which mice are to be polled at.
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.
vga= [BOOT,IA-32] Select a particular video mode
See Documentation/i386/boot.txt and Documentation/svga.txt.
See Documentation/i386/boot.txt and
Documentation/svga.txt.
Use vga=ask for menu.
This is actually a boot loader parameter; the value is
passed to the kernel using a special protocol.
vmalloc=nn[KMG] [KNL,BOOT] forces the vmalloc area to have an exact
vmalloc=nn[KMG] [KNL,BOOT] Forces the vmalloc area to have an exact
size of <nn>. This can be used to increase the
minimum size (128MB on x86). It can also be used to
decrease the size and leave more room for directly
......@@ -1520,11 +1540,11 @@ running once the system is up.
vmhalt= [KNL,S390]
vmpoff= [KNL,S390]
vmpoff= [KNL,S390]
waveartist= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>
wd33c93= [HW,SCSI]
See header of drivers/scsi/wd33c93.c.
......@@ -1538,21 +1558,25 @@ running once the system is up.
xd_geo= See header of drivers/block/xd.c.
xirc2ps_cs= [NET,PCMCIA]
Format: <irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
Format:
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
______________________________________________________________________
Changelog:
2000-06-?? Mr. Unknown
The last known update (for 2.4.0) - the changelog was not kept before.
2000-06-?? Mr. Unknown
2002-11-24 Petr Baudis <pasky@ucw.cz>
Randy Dunlap <randy.dunlap@verizon.net>
Update for 2.5.49, description for most of the options introduced,
references to other documentation (C files, READMEs, ..), added S390,
PPC, SPARC, MTD, ALSA and OSS category. Minor corrections and
reformatting.
2002-11-24 Petr Baudis <pasky@ucw.cz>
Randy Dunlap <randy.dunlap@verizon.net>
2005-10-19 Randy Dunlap <rdunlap@xenotime.net>
Lots of typos, whitespace, some reformatting.
TODO:
......
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