Followup to: <[email protected]>
By author: Matt Mackall <[email protected]>
In newsgroup: linux.dev.kernel
>
> On Mon, Jun 12, 2006 at 01:30:27AM +0200, Jan Engelhardt wrote:
> > >
> > >This patch allows building in a kernel command line on x86 as is
> > >possible on several other arches.
> > >
> > >+config CMDLINE
> > >+ On some systems, there is no way for the boot loader to pass
> > >+ arguments to the kernel. For these platforms, you can supply
> > >+ some command-line options at build time by entering them
> > >+ here. In most cases you will need to specify the root device
> > >+ here.
> >
> > Thank God x86 does not have that limitation. Or am I missing some exotic
> > bootloader that fails to pass in arguments?
>
> Yes. Note that this depends on CONFIG_EMBEDDED. It's quite common for
> embedded apps to roll their own trivial ROM-based boot loaders. It's
> also quite common for embedded boxen to run up against the command
> line length limit that's hardcoded in the boot protocol.
>
There is no command line length limit hard-coded in the boot protocol
per se (at least not for version 2.02 or higher.) The length limit is
hard-coded in the *kernel*, not in the protocol.
-hpa
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