From: Stefan Reinauer <stepan@openbios.org>
To: The development of GRUB 2 <grub-devel@gnu.org>
Subject: Re: Fwd: memory probing
Date: Tue, 10 May 2005 14:13:48 +0200 [thread overview]
Message-ID: <20050510121347.GA13949@openbios.org> (raw)
In-Reply-To: <29f91651050510032358cc2370@mail.gmail.com>
* alfred hitch <alfred.hitch@gmail.com> [050510 12:23]:
> anyways, how can u get this from processor also ?
The processor has little to nothing to do with this.. it's dependent on
the northbridge and southbridge.
> I vaguely remember see'ing some code where someone on a i386 based
> plattform but WITHOUT bios, used smbus protocol to talk to a device
> across PIIX4 to get the info.
Which might work on one motherboard and fail on another. Even if they
both have a PIIX4.
> I am not familiar with PC architecture, so can someone tell me if
> there is some standard chip (memory controller? ?) where one can read
> this on PC type arch. atleast ?
No. Not in a portable way. That's why BIOS provides the e820 table.
> I am on a IXDP425 plattform, and so far I cannot see any such
> register on the data sheets ..
They are usually not disclosed in publically available datasheets.
Stefan
next prev parent reply other threads:[~2005-05-10 12:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-10 8:50 Re: Fwd: memory probing coly li
2005-05-10 9:24 ` Marco Gerards
2005-05-10 10:23 ` alfred hitch
2005-05-10 12:13 ` Stefan Reinauer [this message]
2005-05-11 2:11 ` alfred hitch
2005-05-11 4:39 ` Douglas Wade Needham
2005-05-11 7:47 ` alfred hitch
2005-05-11 17:09 ` Douglas Wade Needham
-- strict thread matches above, loose matches on Subject: below --
2005-05-10 7:37 coly li
2005-05-10 8:33 ` alfred hitch
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