[LinuxBIOS] problem about dram init

Corey Osgood corey.osgood at gmail.com
Fri Dec 21 06:40:52 CET 2007

aaron lwe wrote:
> Dear All,
> I'm terribly sorry that I just found I've mistakenly configured the
> dram MA Map Type, and now memtest
> showed no errors. But I still have to reduce the mem size when
> reporting to system through ram_resource
> or filo couldn't be started.  I have disabled the integrated graphics
> card and the agp, so I don't think the top
> memory should be reserved for frame buffer.

And now you're where I am. For some reason there's a reserved memory
range _somewhere_ at the tolm, of some unknown size. I've found that
reserving an extra 1MB doesn't work, but 32MB does. I've found nothing
in the documentation I have to explain this. BTW, have you had to make
any code changes other than the MA Map, and board-specific fixes? I'm
wondering how generic that code really is.


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