From: "David H. Lynch Jr." <dhlii@dlasys.net>
To: Clint Thomas <cthomas@Soneticom.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Define Linux system memory
Date: Thu, 21 Dec 2006 00:58:33 -0500 [thread overview]
Message-ID: <458A2289.4070401@dlasys.net> (raw)
In-Reply-To: <3C02138692C13C4BB675FE7EA2409529261209@bluefin.Soneticom.local>
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Clint Thomas wrote:
> To anybody who has done this before or understands how to do this, I
> was wondering if you know how to "*tell*" the kernel how much memory
> there is in the system. An example would be if I have 512MB of RAM,
> but only want the system to know that there is about 500MB in RAM, so
> that 12MB does not exist to the OS/kernel. Would this require mucking
> about in U-boot? or can I just define this in the kernel source? Thanks
>
> Clinton Thomas
Most bootloaders including u-boot pass a board information structure
that includes a variety of information including the memory size.
Also I think top of memory is also typically passed to the Linux
Kernel as a register parameter by the boot loader.
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
--
Dave Lynch DLA Systems
Software Development: Embedded Linux
717.627.3770 dhlii@dlasys.net http://www.dlasys.net
fax: 1.253.369.9244 Cell: 1.717.587.7774
Over 25 years' experience in platforms, languages, and technologies too numerous to list.
"Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
Albert Einstein
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next prev parent reply other threads:[~2006-12-21 6:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-20 16:52 Define Linux system memory Clint Thomas
2006-12-20 16:57 ` Frank
2006-12-20 18:02 ` Clint Thomas
2006-12-21 5:58 ` David H. Lynch Jr. [this message]
2006-12-21 7:05 ` Parav Pandit
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