Fwd: [PATCH] em7210: fix memory size

Arnaud Patard (Rtp) arnaud.patard at rtp-net.org
Wed Sep 23 15:43:52 EDT 2009

Dan Williams <dan.j.williams at intel.com> writes:

> [ replied to wrong mailing list ]
> ---------- Forwarded message ----------
> From: Dan Williams <dan.j.williams at intel.com>
> Date: Sun, Aug 30, 2009 at 4:31 PM
> Subject: Re: [PATCH] em7210: fix memory size
> To: Arnaud Patard <arnaud.patard at rtp-net.org>
> Cc: linux-arm-kernel at lists.arm.linux.org.uk
> On Wed, Jul 29, 2009 at 4:56 AM, Arnaud Patard<arnaud.patard at rtp-net.org> wrote:
>> The default memory module size on the ss4000e is 256M but Redboot has
>> been hardcoded to pass 512M to the kernel through ATAG. As getting a new
>> redboot is more than unlikely, it has to be fixed in the kernel
>> (unfortunately). This patch does that.
> I am on the fence on this one.  On the one hand it makes sense in that
> the kernel is usable without a "mem=256M..." command line option on
> default configured platforms.  Users that have upgraded the memory can
> pass a "mem=512M..." to use their extra memory.  However, it still
> seems that this will appear as a regression to any current 512M
> platforms that are not passing a command line option, and a "don't
> care" to everyone who must be passing "mem=256M..." to get a
> functional platform.
> Hmm...  can you say a bit more about this comment "solving this issue will help
> also people porting the d-i on the device." [1] That might help tip the balance.

I've asked more details and I'm going to try to sum up the point. I hope
I won't make any mistake as I'm not familiar with d-i internals at
all. Please bear with me.

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