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From: Florian Boelstler <euphoria@arcor.de>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Reserving small amounts of memory with mem= (MPC85xx,   2.6.15 arch/ppc)
Date: Mon, 16 Jun 2008 16:26:43 +0200	[thread overview]
Message-ID: <g35t76$u50$1@ger.gmane.org> (raw)
In-Reply-To: <485292C2.6030103@freescale.com>

Scott Wood wrote:
> CAM entries can be any power of 4 between 4K and 256M.  However, the 
> code currently is hardcoded to use no more than 3 entries.

Ah, this explains a lot, thanks.

> Alternately, do you have highmem enabled?  That will let you access the 
> rest of the RAM that the CAM doesn't map, though I don't know if an 
> initrd in highmem works.

I didn't had highmem enabled so far. Now it is and Linux is able to 
allocate rest of memory.

It doesn't work if initrd is placed in highmem though. I just put it at 
the end of lowmem.

Cheers,

   Florian

      reply	other threads:[~2008-06-16 14:27 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-12 16:18 Reserving small amounts of memory with mem= (MPC85xx, 2.6.15 arch/ppc) Florian Boelstler
2008-06-12 19:14 ` Sylvain Joyeau
2008-06-13 14:30   ` Florian Boelstler
2008-06-13 15:31     ` Scott Wood
2008-06-16 14:26       ` Florian Boelstler [this message]

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