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| author | Frans Pop <elendil@planet.nl> | 2006-11-04 11:57:25 +0000 |
|---|---|---|
| committer | Frans Pop <elendil@planet.nl> | 2006-11-04 11:57:25 +0000 |
| commit | 227eaa2e27a9bcdab9eca6c4bf9fdb4891e5b23d (patch) | |
| tree | 198edc54692ab0286323ae6a9b55425e80450266 /en/boot-installer | |
| parent | 41fd6d877189aa59c508ba1162687fa79fc78b5d (diff) | |
| download | installation-guide-227eaa2e27a9bcdab9eca6c4bf9fdb4891e5b23d.zip | |
Document how to pass parameters to kernel modules on boot
Diffstat (limited to 'en/boot-installer')
| -rw-r--r-- | en/boot-installer/parameters.xml | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/en/boot-installer/parameters.xml b/en/boot-installer/parameters.xml index 0b990a323..42094a06e 100644 --- a/en/boot-installer/parameters.xml +++ b/en/boot-installer/parameters.xml @@ -385,5 +385,45 @@ performing a normal installation. See <xref linkend="rescue"/>. </variablelist> </sect2> + + <sect2 id="module-parms"><title>Passing parameters to kernel modules</title> +<para> + +If drivers are compiled into the kernel, you can pass parameters to them +as described in the kernel documentation. However, if drivers are compiled +as modules and because kernel modules are loaded a bit differently during +an installation than when booting an installed system, it is not possible +to pass parameters to modules as you would normally do. Instead, you need +to use a special syntax recognized by the installer which will then make +sure that the parameters are saved in the proper configuration files and +will thus be used when the modules are actually loaded. The parameters +will also be propagated automatically to the configuration for the installed +system. + +</para><para> + +Note that it is now quite rare that parameters need to be passed to modules. +In most cases the kernel will be able to probe the hardware present in a +system and set good defaults that way. However, in some situations it may +still be needed to set parameters manually. + +</para><para> + +The syntax to use to set parameters for modules is: + +<informalexample><screen> +<replaceable>module_name</replaceable>.<replaceable>parameter_name</replaceable>=<replaceable>value</replaceable> +</screen></informalexample> + +If you need to pass multiple parameters to the same or different modules, +just repeat this. For example, to set an old 3Com network interface card +to use the BNC (coax) connector and IRQ 10, you would pass: + +<informalexample><screen> +3c509.xcvr=3 3c509.irq=10 +</screen></informalexample> + +</para> + </sect2> </sect1> |