From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1DVS9C-0001ZO-8s for mharc-grub-devel@gnu.org; Tue, 10 May 2005 06:39:30 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1DVS99-0001Y2-4g for grub-devel@gnu.org; Tue, 10 May 2005 06:39:27 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1DVS97-0001XS-Of for grub-devel@gnu.org; Tue, 10 May 2005 06:39:26 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1DVS4O-0007oM-Vr for grub-devel@gnu.org; Tue, 10 May 2005 06:34:33 -0400 Received: from [64.233.184.198] (helo=wproxy.gmail.com) by monty-python.gnu.org with esmtp (Exim 4.34) id 1DVRzO-0007mV-S6 for grub-devel@gnu.org; Tue, 10 May 2005 06:29:23 -0400 Received: by wproxy.gmail.com with SMTP id 36so2241975wra for ; Tue, 10 May 2005 03:23:00 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=qoltNZrZ6OMuGlKFGqQojeUprOvZ+Ftl54naVs82NXUkGNUt8Rz6KngCZVJUhmUGslGrUm5AzMzp2SybjldGmg+Eu9aQ2MEhaKO9cZMAf7Mdwcz4d2qOq2YCIXXSAhv7dmcndx8QXnZbajftZwr4LOi6jNknaLJAIUgo4DCSn8s= Received: by 10.54.14.3 with SMTP id 3mr431073wrn; Tue, 10 May 2005 03:23:00 -0700 (PDT) Received: by 10.54.34.79 with HTTP; Tue, 10 May 2005 03:23:00 -0700 (PDT) Message-ID: <29f91651050510032358cc2370@mail.gmail.com> Date: Tue, 10 May 2005 06:23:00 -0400 From: alfred hitch To: Marco Gerards In-Reply-To: <87y8an4emu.fsf@student.han.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <20050510085058.DEF762FAC4@smtp.263.net> <87y8an4emu.fsf@student.han.nl> Cc: The development of GRUB 2 Subject: Re: Fwd: memory probing X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 May 2005 10:39:28 -0000 I agree with u,=20 if there are holes and all in the area being scanned also with this fail ? anyways, how can u get this from processor also ?=20 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. 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 ? I am on a IXDP425 plattform, and so far I cannot see any such register on the data sheets .. Cheers, Alfred On 5/10/05, Marco Gerards wrote: > "coly li" writes: >=20 > > write and verify means: you read the content from location X, and > > change the value, then write back to location X; then re-read the > > content from X, if the value is what you write, the location X is > > valid; otherwise, maybe the location X is invalid. >=20 > This sounds dangerous to me, what if you are writing to memory mapped > I/O? I think you can get the amount of memory from the processor, no? >=20 > -- > Marco >=20 >