diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 90 |
1 files changed, 78 insertions, 12 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 4d175c751246..0a3fed445249 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -35,6 +35,7 @@ parameter is applicable: APIC APIC support is enabled. APM Advanced Power Management support is enabled. AX25 Appropriate AX.25 support is enabled. + BLACKFIN Blackfin architecture is enabled. DRM Direct Rendering Management support is enabled. EDD BIOS Enhanced Disk Drive Services (EDD) is enabled EFI EFI Partitioning (GPT) is enabled @@ -67,16 +68,19 @@ parameter is applicable: PARIDE The ParIDE (parallel port IDE) subsystem is enabled. PARISC The PA-RISC architecture is enabled. PCI PCI bus support is enabled. + PCIE PCI Express support is enabled. PCMCIA The PCMCIA subsystem is enabled. PNP Plug & Play support is enabled. PPC PowerPC architecture is enabled. PPT Parallel port support is enabled. PS2 Appropriate PS/2 support is enabled. RAM RAM disk support is enabled. + ROOTPLUG The example Root Plug LSM is enabled. S390 S390 architecture is enabled. SCSI Appropriate SCSI support is enabled. A lot of drivers has their options described inside of Documentation/scsi/. + SECURITY Different security models are enabled. SELINUX SELinux support is enabled. SERIAL Serial support is enabled. SH SuperH architecture is enabled. @@ -347,6 +351,11 @@ and is between 256 and 4096 characters. It is defined in the file blkmtd_bs= blkmtd_count= + boot_delay= Milliseconds to delay each printk during boot. + Values larger than 10 seconds (10000) are changed to + no delay (0). + Format: integer + bttv.card= [HW,V4L] bttv (bt848 + bt878 based grabber cards) bttv.radio= Most important insmod options are available as kernel args too. @@ -366,6 +375,12 @@ and is between 256 and 4096 characters. It is defined in the file possible to determine what the correct size should be. This option provides an override for these situations. + capability.disable= + [SECURITY] Disable capabilities. This would normally + be used only if an alternative security model is to be + configured. Potentially dangerous and should only be + used if you are entirely sure of the consequences. + chandev= [HW,NET] Generic channel device initialisation checkreqprot [SELINUX] Set initial checkreqprot flag value. @@ -464,6 +479,16 @@ and is between 256 and 4096 characters. It is defined in the file UART at the specified I/O port or MMIO address. The options are the same as for ttyS, above. + no_console_suspend + [HW] Never suspend the console + Disable suspending of consoles during suspend and + hibernate operations. Once disabled, debugging + messages can reach various consoles while the rest + of the system is being put to sleep (ie, while + debugging driver suspend/resume hooks). This may + not work reliably with all consoles, but is known + to work with serial and VGA consoles. + cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver Format: <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] @@ -472,6 +497,13 @@ and is between 256 and 4096 characters. It is defined in the file [KNL] Reserve a chunk of physical memory to hold a kernel to switch to with kexec on panic. + crashkernel=range1:size1[,range2:size2,...][@offset] + [KNL] Same as above, but depends on the memory + in the running system. The syntax of range is + start-[end] where start and end are both + a memory unit (amount[KMG]). See also + Documentation/kdump/kdump.txt for a example. + cs4232= [HW,OSS] Format: <io>,<irq>,<dma>,<dma2>,<mpuio>,<mpuirq> @@ -550,7 +582,7 @@ and is between 256 and 4096 characters. It is defined in the file dtc3181e= [HW,SCSI] - earlyprintk= [X86-32,X86-64,SH] + earlyprintk= [X86-32,X86-64,SH,BLACKFIN] earlyprintk=vga earlyprintk=serial[,ttySn[,baudrate]] @@ -863,6 +895,10 @@ and is between 256 and 4096 characters. It is defined in the file lasi= [HW,SCSI] PARISC LASI driver for the 53c700 chip Format: addr:<io>,irq:<irq> + libata.noacpi [LIBATA] Disables use of ACPI in libata suspend/resume + when set. + Format: <int> + load_ramdisk= [RAM] List of ramdisks to load from floppy See Documentation/ramdisk.txt. @@ -900,6 +936,11 @@ and is between 256 and 4096 characters. It is defined in the file n must be a power of two. The default size is set in the kernel config file. + logo.nologo [FB] Disables display of the built-in Linux logo. + This may be used to provide more screen space for + kernel log messages and is useful when debugging + kernel boot problems. + lp=0 [LP] Specify parallel ports to use, e.g, lp=port[,port...] lp=none,parport0 (lp0 not configured, lp1 uses lp=reset first parallel port). 'lp=0' disables the @@ -970,6 +1011,8 @@ and is between 256 and 4096 characters. It is defined in the file mce [X86-32] Machine Check Exception + mce=option [X86-64] See Documentation/x86_64/boot-options.txt + md= [HW] RAID subsystems devices and level See Documentation/md.txt. @@ -1008,6 +1051,10 @@ and is between 256 and 4096 characters. It is defined in the file meye.*= [HW] Set MotionEye Camera parameters See Documentation/video4linux/meye.txt. + mfgpt_irq= [IA-32] Specify the IRQ to use for the + Multi-Function General Purpose Timers on AMD Geode + platforms. + mga= [HW,DRM] mousedev.tap_time= @@ -1073,16 +1120,19 @@ and is between 256 and 4096 characters. It is defined in the file [NFS] set the maximum lifetime for idmapper cache entries. + nfs.enable_ino64= + [NFS] enable 64-bit inode numbers. + If zero, the NFS client will fake up a 32-bit inode + number for the readdir() and stat() syscalls instead + of returning the full 64-bit number. + The default is to return 64-bit inode numbers. + nmi_watchdog= [KNL,BUGS=X86-32] Debugging features for SMP kernels no387 [BUGS=X86-32] Tells the kernel to use the 387 maths emulation library even if a 387 maths coprocessor is present. - noacpi [LIBATA] Disables use of ACPI in libata suspend/resume - when set. - Format: <int> - noaliencache [MM, NUMA, SLAB] Disables the allocation of alien caches in the slab allocator. Saves per-node memory, but will impact performance. @@ -1159,6 +1209,9 @@ and is between 256 and 4096 characters. It is defined in the file nomce [X86-32] Machine Check Exception + nomfgpt [X86-32] Disable Multi-Function General Purpose + Timer usage (for AMD Geode machines). + noreplace-paravirt [X86-32,PV_OPS] Don't patch paravirt_ops noreplace-smp [X86-32,SMP] Don't replace SMP instructions @@ -1269,6 +1322,11 @@ and is between 256 and 4096 characters. It is defined in the file Mechanism 1. conf2 [X86-32] Force use of PCI Configuration Mechanism 2. + noaer [PCIE] If the PCIEAER kernel config parameter is + enabled, this kernel boot option can be used to + disable the use of PCIE advanced error reporting. + nodomains [PCI] Disable support for multiple PCI + root domains (aka PCI segments, in ACPI-speak). nommconf [X86-32,X86_64] Disable use of MMCONFIG for PCI Configuration nomsi [MSI] If the PCI_MSI kernel config parameter is @@ -1313,6 +1371,8 @@ and is between 256 and 4096 characters. It is defined in the file IRQ routing is enabled. noacpi [X86-32] Do not use ACPI for IRQ routing or for PCI scanning. + use_crs [X86-32] Use _CRS for PCI resource + allocation. routeirq Do IRQ routing for all PCI devices. This is normally done in pci_enable_device(), so this option is a temporary workaround @@ -1429,6 +1489,10 @@ and is between 256 and 4096 characters. It is defined in the file pt. [PARIDE] See Documentation/paride.txt. + pty.legacy_count= + [KNL] Number of legacy pty's. Overwrites compiled-in + default number. + quiet [KNL] Disable most log messages r128= [HW,DRM] @@ -1436,14 +1500,10 @@ and is between 256 and 4096 characters. It is defined in the file raid= [HW,RAID] See Documentation/md.txt. - ramdisk= [RAM] Sizes of RAM disks in kilobytes [deprecated] - See Documentation/ramdisk.txt. - 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. rcu.blimit= [KNL,BOOT] Set maximum number of finished @@ -1506,6 +1566,15 @@ and is between 256 and 4096 characters. It is defined in the file Useful for devices that are detected asynchronously (e.g. USB and MMC devices). + root_plug.vendor_id= + [ROOTPLUG] Override the default vendor ID + + root_plug.product_id= + [ROOTPLUG] Override the default product ID + + root_plug.debug= + [ROOTPLUG] Enable debugging output + rw [KNL] Mount root device read-write on boot S [KNL] Run init in single mode @@ -1863,9 +1932,6 @@ and is between 256 and 4096 characters. It is defined in the file 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: |