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From: "Thomas Rinder" <thomas.rinder@automationtechnology.de>
To: <linuxppc-dev@lists.ozlabs.org>
Subject: XILINX  memory layout <-> physical memory
Date: Tue, 6 Oct 2009 10:29:44 +0100
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Betreff: XILINX memory layout <-> physical memory

Hello,

I'm newbie in PPCLinux, don't know I'm right here.

I made a ports to an AVNET FX12 minimodul and custom board (FX40/FX60) =
based
on linuxppc found on http://git.xilinx.com/ (ppc405 processor).

All works fine, but I can use/configure only the half memory size =
available
in the dts (for instance 32Mbytes of 64Mbytes on Avnet minimodul).
Otherwise the kernel crashes if tries to mount the root file system =
(ext2
ramdisk).

I expect my problem is the physical memory layout and its control. I =
want to
understand and control the physical memory layout.

But I didn't not found documentation how the memory layout is organized =
in
linuxppc and
how do I control were kernel, ramdisk etc. resides in physical memory.

Could anyone give me a hint please, how-to start?

Thanks a lot,

Thomas

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