From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: David Jander To: Subject: Memory map with "holes"... Date: Tue, 12 Aug 2003 14:32:09 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: <200308121432.09782.david.jander@protonic.nl> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hi all, We are designing a board based on the MPC852T (MPC866 serivate), and I want to make sure there is the possibility to mount different-size SDRAM chips on it, so I just connect the two bank-select pins to some higher address lines, leaving some out in between, in order to acomodate for bigger chips in the future. The bottom line is that I will get the memory map split up into 4 segments with vast holes between each segment that are undefined. What do I need to keep in mind regarding linux about this? I suppose it isn't an issue, but I want to be sure I don't get any trouble later. Any experience with memory holes? I suppose the boot-loader should tell the kernel about the memory-map, in a way just like lilo on an x86 machine, am I right? Does this work the same way on linux-ppc ? Greetings, -- David Jander Protonic Holland. tel.: +31 (0) 229 212928 fax.: +31 (0) 229 210930 Factorij 36 / 1628 AL Zwaag ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/