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Re: Cached Base address difference.

To: "Anoop P.A." <Anoop_P.A@pmc-sierra.com>
Subject: Re: Cached Base address difference.
From: Chris Dearman <chris@mips.com>
Date: Wed, 03 Feb 2010 11:15:05 -0800
Cc: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org
In-reply-to: <A7DEA48C84FD0B48AAAE33F328C0201404809DEA@BBY1EXM11.pmc_nt.nt.pmc-sierra.bc.ca>
Organization: MIPS Technologies
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References: <1265015455-32553-1-git-send-email-wuzhangjin@gmail.com> <b2b2f2321002011903m7a090481m52d84a664beb5468@mail.gmail.com> <20100203012934.GA20375@linux-mips.org> <A7DEA48C84FD0B48AAAE33F328C0201404809DE0@BBY1EXM11.pmc_nt.nt.pmc-sierra.bc.ca> <20100203123331.GB20375@linux-mips.org> <A7DEA48C84FD0B48AAAE33F328C0201404809DEA@BBY1EXM11.pmc_nt.nt.pmc-sierra.bc.ca>
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Anoop P.A. wrote:
Hi Ralf,

I am sorry if it is not clear from my last mail.

What I want to convey is,
"See MIPS Run" explains "window on physical memory (cached)" will start
@ 0x9000_0000_0000_0000.
You can see "See MIPS Run" page under suspect from this link
http://books.google.co.in/books?id=kk8G2gK4Tw8C&lpg=PP1&dq=see%20mips%20
run&pg=PA51#v=onepage&q=&f=false

How ever as you mentioned Linux source defines CAC_BASE
0x98000000_00000000

The Linux header file is correct; the cached and uncached regions are swapped in the "See MIPS Run" diagram.

The full MIPS64 memory map is documented in Volume III of the architecture manual which you can download from http://www.mips.com/products/architectures/mips64/

Chris

--
Chris Dearman               Desk: +1 408 530 5092  Cell: +1 408 398 5531
MIPS Technologies Inc            955 East Arques Ave, Sunnyvale CA 94085

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