This is the mail archive of the ecos-discuss@sourceware.org mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

RE: Simple ? Question, where is my memory


Chuck,
the first range is the total RAM that Redboot is told that it has
(NB this is not necessarily what is real memory).
The second range is what is left of RAM after Redboot takes what it needs.

Not sure about the memory mapped devices - hopefully that's specified in
some CDL somewhere.


			...Laurie:{)

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Chuck
McManis
Sent: Friday, 2 March 2007 7:51 PM
To: ECOS Discussion Group
Subject: [ECOS] Simple ? Question, where is my memory


Ok, so my PC has a 256MB stick of memory in it but Redboot reports
RAM: 0x00100000-0x040f0000, [0x0018dad0-0x01000000] available

What does this mean?

Looks like two ranges that overlap, one is 1MB - 64MB (approximately) and
the other is 1.5ish MB through 256MB.

I'm using Grub so I select Load High on my target and it loads into 2.5MB
like so:
RedBoot> load webs
Using default protocol (TFTP)
Entry point: 0x00208000, address range: 0x00208000-0x002454e0
RedBoot>

seems to be a bit past 2MB through abit past 2.25MB.

Where is the PCI memory mapped? Up near 4GB? Down in the 1MB range? Is
0-1MB verboten?

The monitor can look out in that space but if there was a clear explanation
of what those numbers meant it would be helpful. Pointer?

--Chuck


--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]