From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1IEVEW-0000tI-Hg for mharc-grub-devel@gnu.org; Fri, 27 Jul 2007 15:12:16 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IEVEU-0000qL-Od for grub-devel@gnu.org; Fri, 27 Jul 2007 15:12:14 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IEVER-0000ij-AU for grub-devel@gnu.org; Fri, 27 Jul 2007 15:12:14 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IEVER-0000iN-2B for grub-devel@gnu.org; Fri, 27 Jul 2007 15:12:11 -0400 Received: from aybabtu.com ([69.60.117.155]) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1IEVEQ-0001AV-Qt for grub-devel@gnu.org; Fri, 27 Jul 2007 15:12:10 -0400 Received: from [192.168.10.6] (helo=aragorn) by aybabtu.com with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1IEVEP-0007QD-82; Fri, 27 Jul 2007 21:12:09 +0200 Received: from rmh by aragorn with local (Exim 4.63) (envelope-from ) id 1IEVHO-0000wJ-Jp; Fri, 27 Jul 2007 21:15:14 +0200 Date: Fri, 27 Jul 2007 21:15:14 +0200 From: Robert Millan To: Sven Luther Message-ID: <20070727191514.GA3461@aragorn> References: <20070710100444.GA5222@sahara.iti.upv.es> <20070710140823.GA8909@aragorn> <1184099550.9495.76.camel@basalt> <20070713220829.GA20231@aragorn> <20070724195946.GA3336@aragorn> <20070725200805.GA17393@aragorn> <20070727080500.GA17986@aragorn> <20070727103310.GA1539@powerlinux.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070727103310.GA1539@powerlinux.fr> Organization: free as in freedom X-Message-Flag: Microsoft discourages use of Outlook. X-Debbugs-No-Ack: true User-Agent: Mutt/1.5.13 (2006-08-11) X-detected-kernel: Genre and OS details not recognized. Cc: The development of GRUB 2 Subject: Re: memory management issue (Re: another regression on Efika) 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: Fri, 27 Jul 2007 19:12:15 -0000 Forwarding reply from Sven since he wasn't subscribed when it was sent. On Fri, Jul 27, 2007 at 12:33:10PM +0200, Sven Luther wrote: > > The efika has 128MB of builtin memory, and we know that everything above > 24MB except a little heap at the top is free, so this should be enough > for everyone, no ? > > The 0 to 16MB area is also free normally, and the pre-powerpc kernel > loaded themselves at 4 or 8 MB, and relocate the kernel at 0. > > Using the 16MB to 24MB area is a big no-no though, since it would kill > the firmware. > > The efika/pegasos firmware is not able to relocate itself dynamically, > and as it reserves the first 256MB (1 BAT area), but it could be used > with a 128 MB (like the efika) or smaller memory DIMM, so it cannot > reside on the top area of ram where it belongs. > > There is a small stack going down from min(top-of-memory,256MB) of a > couple MB though. > > The efika/pegasos firmware furthermore runs in physical memory, and > cannot switch to virtual memory. > > Hope this helps, altough obviously i can make no prediction about future > efika firmwares. > > Friendly, > > Sven Luther > -- Robert Millan My spam trap is honeypot@aybabtu.com. Note: this address is only intended for spam harvesters. Writing to it will get you added to my black list.