parsing of some early cmdline options
michael at ellerman.id.au
Fri Feb 24 10:40:50 EST 2006
On Fri, 24 Feb 2006 10:19, Benjamin Herrenschmidt wrote:
> On Thu, 2006-02-23 at 17:02 -0600, Kumar Gala wrote:
> > Guys,
> > I noticed that we have code in arch/powerpc/kernel/prom_init.c to handle
> > parsing iommu=, mem=, and crashkernel=.
> > The problem I have is that we only use/build prom_init.c on MULTIPLATFORM
> > (coming from true OF).
> > Any ideas on how to handle this for the !MULTIPLATFORM cases. I'm most
> > concerned about mem=.
mem= is a bit tricky because you need to know about it really early, otherwise
your bootloader might violate the limit. But we could certainly check for it
again in prom.c. And you can always just set /chosen/linux,memory-limit.
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