X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=Documentation%2Fkernel-parameters.txt;h=12b3b24bfd2fce3ba2362f94e0de5b9212ba4b03;hb=e78d01693be38bf93dd6bb49b86e143da450de86;hp=71d05f481727669ce88a517a3cd631988fd9c32b;hpb=ae3e0218621db0590163b2d5c424ef1f340e3cc6;p=linux-2.6-omap-h63xx.git diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 71d05f48172..12b3b24bfd2 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -110,6 +110,13 @@ be entered as an environment variable, whereas its absence indicates that it will appear as a kernel argument readable via /proc/cmdline by programs running once the system is up. +The number of kernel parameters is not limited, but the length of the +complete command line (parameters including spaces etc.) is limited to +a fixed number of characters. This limit depends on the architecture +and is between 256 and 4096 characters. It is defined in the file +./include/asm/setup.h as COMMAND_LINE_SIZE. + + 53c7xx= [HW,SCSI] Amiga SCSI controllers See header of drivers/scsi/53c7xx.c. See also Documentation/scsi/ncr53c7xx.txt. @@ -348,9 +355,9 @@ running once the system is up. clock= [BUGS=IA-32, HW] gettimeofday clocksource override. [Deprecated] - Forces specified clocksource (if avaliable) to be used + Forces specified clocksource (if available) to be used when calculating gettimeofday(). If specified - clocksource is not avalible, it defaults to PIT. + clocksource is not available, it defaults to PIT. Format: { pit | tsc | cyclone | pmtmr } disable_8254_timer @@ -573,8 +580,6 @@ running once the system is up. gscd= [HW,CD] Format: - gt96100eth= [NET] MIPS GT96100 Advanced Communication Controller - gus= [HW,OSS] Format: ,,, @@ -606,8 +611,8 @@ running once the system is up. noirqbalance [IA-32,SMP,KNL] Disable kernel irq balancing i8042.direct [HW] Put keyboard port into non-translated mode - i8042.dumbkbd [HW] Pretend that controlled can only read data from - keyboard and can not control its state + i8042.dumbkbd [HW] Pretend that controller can only read data from + keyboard and cannot control its state (Don't attempt to blink the leds) i8042.noaux [HW] Don't check for auxiliary (== mouse) port i8042.nokbd [HW] Don't check/create keyboard port @@ -1240,7 +1245,11 @@ running once the system is up. bootloader. This is currently used on IXP2000 systems where the bus has to be configured a certain way for adjunct CPUs. - + noearly [X86] Don't do any early type 1 scanning. + This might help on some broken boards which + machine check when some devices' config space + is read. But various workarounds are disabled + and some IOMMU drivers will not work. pcmv= [HW,PCMCIA] BadgePAD 4 pd. [PARIDE] @@ -1322,7 +1331,7 @@ running once the system is up. pt. [PARIDE] See Documentation/paride.txt. - quiet= [KNL] Disable log messages + quiet [KNL] Disable most log messages r128= [HW,DRM] @@ -1359,10 +1368,18 @@ running once the system is up. reboot= [BUGS=IA-32,BUGS=ARM,BUGS=IA-64] Rebooting mode Format: [,[,...]] - See arch/*/kernel/reboot.c. + See arch/*/kernel/reboot.c or arch/*/kernel/process.c reserve= [KNL,BUGS] Force the kernel to ignore some iomem area + reservetop= [IA-32] + Format: nn[KMG] + Reserves a hole at the top of the kernel virtual + address space. + + reset_devices [KNL] Force drivers to reset the underlying device + during initialization. + resume= [SWSUSP] Specify the partition device for software suspend