CD Appropriate CD 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.
FB The frame buffer device is enabled.
MOUSE Appropriate mouse support is enabled.
MTD MTD support is enabled.
NET Appropriate network support is enabled.
+ NUMA NUMA support is enabled.
NFS Appropriate NFS support is enabled.
OSS OSS sound support is enabled.
PARIDE The ParIDE subsystem is enabled.
+ PARISC The PA-RISC architecture is enabled.
PCI PCI bus support is enabled.
PCMCIA The PCMCIA subsystem is enabled.
PNP Plug & Play support is enabled.
See header of drivers/scsi/53c7xx.c.
See also Documentation/scsi/ncr53c7xx.txt.
- 98busmouse.irq= [HW,MOUSE] PC-9801 Bus Mouse Driver
- Format: <irq>, default is 13
-
acpi= [HW,ACPI] Advanced Configuration and Power Interface
Format: { force | off | ht | strict }
force -- enable ACPI if default was off
Recognize and ignore IRQ0/pin2 Interrupt Override.
For broken nForce2 BIOS resulting in XT-PIC timer.
+ acpi_dbg_layer= [HW,ACPI]
+ Format: <int>
+ 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,
+ 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.
+
+ acpi_fake_ecdt [HW,ACPI] Workaround failure due to BIOS lacking ECDT
+
ad1816= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>
See also Documentation/sound/oss/AD1816.
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
+ 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.
atascsi= [HW,SCSI] Atari SCSI
- atkbd.extra= [HW] Enable extra LEDs and keys on IBM RapidAccess, EzKey
- and similar keyboards
+ atkbd.extra= [HW] Enable extra LEDs and keys on IBM RapidAccess,
+ EzKey and similar keyboards
atkbd.reset= [HW] Reset keyboard during initialization
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.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
condev= [HW,S390] console device
conmode=
- console= [KNL] Output console
- Console device and comm spec (speed, control, parity).
+ console= [KNL] Output console device and options.
+
+ tty<n> Use the virtual console device <n>.
+
+ ttyS<n>[,options]
+ Use the specified serial port. The options are of
+ the form "bbbbpn", where "bbbb" is the baud rate,
+ "p" is parity ("n", "o", or "e"), and "n" is bits.
+ Default is "9600n8".
+
+ See also Documentation/serial-console.txt.
+
+ uart,io,<addr>[,options]
+ uart,mmio,<addr>[,options]
+ Start an early, polled-mode console on the 8250/16550
+ UART at the specified I/O port or MMIO address,
+ switching to the matching ttyS device later. The
+ 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>]
edb= [HW,PS2]
+ edd= [EDD]
+ Format: {"of[f]" | "sk[ipmbr]"}
+ See comment in arch/i386/boot/edd.S
+
eicon= [HW,ISDN]
Format: <id>,<membase>,<irq>
- eisa_irq_edge= [PARISC]
+ eisa_irq_edge= [PARISC,HW]
See header of drivers/parisc/eisa.c.
elanfreq= [IA-32]
elevator= [IOSCHED]
Format: {"as"|"cfq"|"deadline"|"noop"}
- See Documentation/as-iosched.txt for details
+ See Documentation/block/as-iosched.txt
+ and Documentation/block/deadline-iosched.txt for details.
es1370= [HW,OSS]
Format: <lineout>[,<micbias>]
gvp11= [HW,SCSI]
+ hashdist= [KNL,NUMA] Large hashes allocated during boot
+ are distributed across NUMA nodes. Defaults on
+ for IA-64, off otherwise.
+
hcl= [IA-64] SGI's Hardware Graph compatibility layer
hd= [EIDE] (E)IDE hard drive subsystem geometry
hd?= [HW] (E)IDE subsystem
hd?lun= See Documentation/ide.txt.
+ highmem=nn[KMG] [KNL,BOOT] forces the highmem zone to have an exact
+ size of <nn>. This works even on boxes that have no
+ highmem otherwise. This also works to reduce highmem
+ size on bigger boxes.
+
hisax= [HW,ISDN]
See Documentation/isdn/README.HiSax.
i8042.dumbkbd [HW] Pretend that controlled can only read data from
keyboard and can not control its state
(Don't attempt to blink the leds)
+ i8042.noacpi [HW] Don't use ACPI to discover KBD/AUX controller
+ settings
i8042.noaux [HW] Don't check for auxiliary (== mouse) port
i8042.nomux [HW] Don't check presence of an active multiplexing
controller
i810= [HW,DRM]
+ i8k.force [HW] Activate i8k driver even if SMM BIOS signature
+ does not match list of supported models.
+ i8k.power_status
+ [HW] Report power status in /proc/i8k
+ (disabled by default)
+ i8k.restricted [HW] Allow controlling fans only if SYS_ADMIN
+ capability is set.
+
ibmmcascsi= [HW,MCA,SCSI] IBM MicroChannel SCSI adapter
See Documentation/mca.txt.
icn= [HW,ISDN]
Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]]
+ ide= [HW] (E)IDE subsystem
+ Format: ide=nodma or ide=doubler or ide=reverse
+ See Documentation/ide.txt.
+
ide?= [HW] (E)IDE subsystem
- Config (iomem/irq), tuning or debugging
- (serialize,reset,no{dma,tune,probe}) or chipset
- specific parameters.
+ Format: ide?=noprobe or chipset specific parameters.
See Documentation/ide.txt.
idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed
isapnp= [ISAPNP]
Format: <RDP>, <reset>, <pci_scan>, <verbosity>
+ isolcpus= [KNL,SMP] Isolate CPUs from the general scheduler.
+ Format: <cpu number>,...,<cpu number>
+ This option can be used to specify one or more CPUs
+ to isolate from the general SMP balancing and scheduling
+ algorithms. The only way to move a process onto or off
+ an "isolated" CPU is via the CPU affinity syscalls.
+ <cpu number> begins at 0 and the maximum value is
+ "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.
+
isp16= [HW,CD]
Format: <io>,<irq>,<dma>,<setup>
so, the driver will manage that printer.
See also header of drivers/char/lp.c.
+ lpj=n [KNL]
+ Sets loops_per_jiffy to given constant, thus avoiding
+ time-consuming boot-time autodetection (up to 250 ms per
+ CPU). 0 enables autodetection (default). To determine
+ the correct value for your kernel, boot with normal
+ autodetection and see what value is printed. Note that
+ on SMP systems the preset will be applied to all CPUs,
+ which is likely to cause problems if your CPUs need
+ significantly divergent settings. An incorrect value
+ will cause delays in the kernel to be wrong, leading to
+ unpredictable I/O errors and other breakage. Although
+ unlikely, in the extreme case this might damage your
+ hardware.
+
ltpc= [NET]
Format: <io>,<irq>,<dma>
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
+
mad16= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma16>,<mpu_io>,<mpu_irq>,<joystick>
maxcpus= [SMP] Maximum number of processors that an SMP kernel
should make use of
- max_scsi_luns= [SCSI]
+ max_luns= [SCSI] Maximum number of LUNs to probe
+ Should be between 1 and 2^32-1.
- max_scsi_report_luns=
+ max_report_luns=
[SCSI] Maximum number of LUNs received
Should be between 1 and 16384.
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.
+ [IA-32] Use together with memmap= to avoid physical
+ address space collisions. Without memmap= PCI devices
+ could be placed at addresses belonging to unused RAM.
mem=nopentium [BUGS=IA-32] Disable usage of 4MB pages for kernel
memory.
[KNL,ACPI] Mark specific memory as reserved.
Region of memory to be used, from ss to ss+nn.
- meye= [HW] Set MotionEye Camera parameters
+ meye.*= [HW] Set MotionEye Camera parameters
See Documentation/video4linux/meye.txt.
mga= [HW,DRM]
+ mousedev.tap_time=
+ [MOUSE] Maximum time between finger touching and
+ leaving touchpad surface for touch to be considered
+ a tap and be reported as a left button click (for
+ touchpads working in absolute mode only).
+ Format: <msecs>
mousedev.xres= [MOUSE] Horizontal screen resolution, used for devices
reporting absolute coordinates, such as tablets
mousedev.yres= [MOUSE] Vertical screen resolution, used for devices
noalign [KNL,ARM]
- noapic [SMP,APIC] Tells the kernel not to make use of any
- APIC that may be present on the system.
+ noapic [SMP,APIC] Tells the kernel to not make use of any
+ IOAPICs that may be present in the system.
noasync [HW,M68K] Disables async and sync negotiation for
all devices.
+ nobats [PPC] Do not use BATs for mapping kernel lowmem
+ on "Classic" PPC cores.
+
nocache [ARM]
nodisconnect [HW,SCSI,M68K] Disables SCSI disconnects.
noexec [IA-64]
- noexec [i386]
+ noexec [i386, x86_64]
noexec=on: enable non-executable mappings (default)
noexec=off: disable nn-executable mappings
nofxsr [BUGS=IA-32]
- nohighio [BUGS=IA-32] Disable highmem block I/O.
-
nohlt [BUGS=ARM]
no-hlt [BUGS=IA-32] Tells the kernel that the hlt
nolapic [IA-32,APIC] Do not enable or use the local APIC.
+ noltlbs [PPC] Do not use large page/tlb entries for kernel
+ lowmem mapping on PPC40x.
+
nomce [IA-32] Machine Check Exception
+ noresidual [PPC] Don't use residual data on PReP machines.
+
noresume [SWSUSP] Disables resume and restore original swap space.
no-scroll [VGA] Disables scrollback.
panic= [KNL] Kernel behaviour on panic
Format: <timeout>
+ parkbd.port= [HW] Parallel port number the keyboard adapter is
+ connected to, default is 0.
+ 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
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: [spp|ps2|epp|ecp|ecpepp]
+
pas2= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma16>,<sb_io>,<sb_irq>,<sb_dma>,<sb_dma16>
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
pd. [PARIDE]
See Documentation/paride.txt.
+ pdcchassis= [PARISC,HW] Disable/Enable PDC Chassis Status codes at
+ boot time.
+ Format: { 0 | 1 }
+ See arch/parisc/kernel/pdc_chassis.c
+
pf. [PARIDE]
See Documentation/paride.txt.
Format: { parport<nr> | timid | 0 }
See also Documentation/parport.txt.
+ pnpacpi= [ACPI]
+ { off }
+
pnpbios= [ISAPNP]
{ on | off | curr | res | no-curr | no-res }
Ranges are in pairs (memory base and size).
profile= [KNL] Enable kernel profiling via /proc/profile
- (param: profile step/bucket size as a power of 2)
+ { schedule | <number> }
+ (param: schedule - profile schedule points}
+ (param: profile step/bucket size as a power of 2 for
+ statistical time based profiling)
+
+ processor.max_cstate= [HW, ACPI]
+ Limit processor to maximum C-state
+ max_cstate=9 overrides any DMI blacklist limit.
prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
before loading.
New name for the ramdisk parameter.
See Documentation/ramdisk.txt.
- ramdisk_start= [RAM] Starting block of RAM disk image (so you can
- place it after the kernel image on a boot floppy).
- See Documentation/ramdisk.txt.
-
reboot= [BUGS=IA-32,BUGS=ARM,BUGS=IA-64] Rebooting mode
Format: <reboot_mode>[,<reboot_mode2>[,...]]
See arch/*/kernel/reboot.c.
root= [KNL] Root filesystem
+ rootdelay= [KNL] Delay (in seconds) to pause before attempting to
+ mount the root filesystem
+
rootflags= [KNL] Set root filesystem mount option string
rootfstype= [KNL] Set root filesystem type
scsi_logging= [SCSI]
- scsihosts= [SCSI]
-
serialnumber [BUGS=IA-32]
sf16fm= [HW] SF16FMI radio driver for Linux
sonycd535= [HW,CD]
Format: <io>[,<irq>]
- sonypi= [HW] Sony Programmable I/O Control Device driver
- Format: <minor>,<verbose>,<fnkeyinit>,<camera>,<compat>,<nojogdial>
+ sonypi.*= [HW] Sony Programmable I/O Control Device driver
+ See Documentation/sonypi.txt
specialix= [HW,SERIAL] Specialix multi-serial port adapter
See Documentation/specialix.txt.
- speedstep_coppermine=
- [HW,IA-32] Take CPU in your notebook as SpeedStep-capable
- See comment before function speedstep_setup() in
- arch/i386/kernel/cpu/cpufreq/speedstep.c.
-
spia_io_base= [HW,MTD]
spia_fio_base=
spia_pedr=
st0x= [HW,SCSI]
See header of drivers/scsi/seagate.c.
- sti= [HW]
+ sti= [PARISC,HW]
Format: <num>
Set the STI (builtin display/keyboard on the HP-PARISC
machines) console (graphic card) which should be used
thash_entries= [KNL,NET]
Set number of hash buckets for TCP connection
- tipar= [HW]
- See header of drivers/char/tipar.c.
+ tipar.timeout= [HW,PPT]
+ Set communications timeout in tenths of a second
+ (default 15).
+
+ tipar.delay= [HW,PPT]
+ Set inter-bit delay in microseconds (default 10).
- tiusb= [HW,USB] Texas Instruments' USB GraphLink (aka SilverLink)
- Format: <timeout>
-
tmc8xx= [HW,SCSI]
See header of drivers/scsi/seagate.c.
uart6850= [HW,OSS]
Format: <io>,<irq>
+
+ usb-handoff [HW] Enable early USB BIOS -> OS handoff
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.
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
+ 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
+ mapped kernel RAM.
+
vmhalt= [KNL,S390]
vmpoff= [KNL,S390]
git://git.onelab.eu / linux-2.6.git / blobdiff