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Re: 1 GB RAM with RM9000 SOC

To: "Anoop P.A." <Anoop_P.A@pmc-sierra.com>
Subject: Re: 1 GB RAM with RM9000 SOC
From: David Daney <ddaney@caviumnetworks.com>
Date: Mon, 25 Jan 2010 09:38:48 -0800
Cc: linux-mips@linux-mips.org
In-reply-to: <A7DEA48C84FD0B48AAAE33F328C020140474B761@BBY1EXM11.pmc_nt.nt.pmc-sierra.bc.ca>
References: <4B56475F.8070608@gmail.com> <20100124002352.GB3251@linux-mips.org> <A7DEA48C84FD0B48AAAE33F328C020140474B674@BBY1EXM11.pmc_nt.nt.pmc-sierra.bc.ca> <4B5DD1A9.6020306@caviumnetworks.com> <A7DEA48C84FD0B48AAAE33F328C020140474B761@BBY1EXM11.pmc_nt.nt.pmc-sierra.bc.ca>
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Anoop P.A. wrote:
Hi David,

Thanks for the info. In which version of LMO kernel , I could find your
working source ?.


I think it was added in 2.6.29

David Daney


Thanks
Anoop

-----Original Message-----
From: David Daney [mailto:ddaney@caviumnetworks.com]
Sent: Monday, January 25, 2010 10:45 PM
To: Anoop P.A.
Cc: linux-mips@linux-mips.org
Subject: Re: 1 GB RAM with RM9000 SOC

Anoop P.A. wrote:
Hi list,



Any of you successfully used >512MB ram with MIPS SOC's.
Does Cavium Octeon count as a MIPS SOC?  If so, then yes.

I have many boards with both 2GB and 4GB.  All of them Linux just fine
when using all available RAM.

I have a
requirement where I have to use 1 GB ram with RM9000 based SOC.

I have enabled 64 Bit support and so far it is working with 512 MB
of
RAM. How ever if I increase memory beyond 512MB I am getting kernel
panic.



 I am adding memory region from 0x00 add_memory_region(0 ,0x40000000
,
BOOT_MEM_RAM). (PMON maps RAM from 0x0 to 0x40000000)  Am I wrong
here?


It will be great if you can give some suggestion /point me to a
working
implementation. I am using 2.6.18 kernel.



Thanks

Anoop








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