From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2355 invoked by alias); 2 Jun 2005 09:57:10 -0000 Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Received: (qmail 2347 invoked by uid 22791); 2 Jun 2005 09:57:08 -0000 Received: from zux170-025.adsl.green.ch (HELO server1.PIXY1.pixy.ch) (80.254.170.25) by sourceware.org (qpsmtpd/0.30-dev) with ESMTP; Thu, 02 Jun 2005 09:57:08 +0000 Received: from c29.pixybugs.dyndns.org ([192.168.121.37]) by server1.PIXY1.pixy.ch with Microsoft SMTPSVC(5.0.2195.5329); Thu, 2 Jun 2005 11:56:50 +0200 From: Marc Michalewicz To: eCos Discussion In-Reply-To: <1117702984.21830.21.camel@c29.pixybugs.dyndns.org> References: <1117702984.21830.21.camel@c29.pixybugs.dyndns.org> Content-Type: text/plain Date: Thu, 02 Jun 2005 09:57:00 -0000 Message-Id: <1117706226.21830.23.camel@c29.pixybugs.dyndns.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [ECOS] accessing external RAM on h8s edk X-SW-Source: 2005-06/txt/msg00008.txt.bz2 Hi, luckily I am I found the problem: the PGDDR had to be set to 0x11 and not 0x01 (as stated below) to enable the SRAM-Chipselect ! Quite complicated, this kind of CPU. Cheers, Marc Am Donnerstag, den 02.06.2005, 11:03 +0200 schrieb Marc Michalewicz: > Hi, > > after getting redboot to work, I now have problems to access the > external RAM on my H8S2329-EDK board. The internal RAM is OK, e.g. > writing bytes into it via the redboot-cmdline works. > > Has anybody a clue what needs to be done to access the external RAM ? > > I adapted the H8S-2357 port (from Uwe Kindler) in the way that I have > changed the initialisation-code in the "platform.inc"-file (Bit EAE in > BCRL especially, but all othere REGS according to the EDK-documentation > as well), but still no success. If it helps, here is the modified > extract from my platform.inc: > > INIT_REGS_DATA(CYGARC_ABWCR, 0xF0) > INIT_REGS_DATA(CYGARC_ASTCR, 0xFF) > INIT_REGS_DATA(CYGARC_BCRH, 0xD0) > INIT_REGS_DATA(CYGARC_BCRL, 0x3C) > INIT_REGS_DATA(CYGARC_WCRH, 0xFF) > INIT_REGS_DATA(CYGARC_WCRL, 0xFD) > INIT_REGS_DATA(CYGARC_MCR, 0x00) > INIT_REGS_DATA(CYGARC_DRAMCR, 0x00) > INIT_REGS_DATA(CYGARC_RTCOR, 0x00) > INIT_REGS_DATA(CYGARC_P6DDR, 0x00) > INIT_REGS_DATA(CYGARC_PADDR, 0x07) > INIT_REGS_DATA(CYGARC_PBDDR, 0xFF) > INIT_REGS_DATA(CYGARC_PCDDR, 0xFF) > INIT_REGS_DATA(CYGARC_PFDDR, 0x80) > INIT_REGS_DATA(CYGARC_PGDDR, 0x01) > INIT_REGS_DATA(CYGARC_MSTPCRL,0x00) > > > Do I have to modify the linkerscripts and/or other items ? Is there any > hint in any documentation ? > > Thanks for any help, > > Marc > > > -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss