From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Fri, 2 Mar 2007 18:51:20 +0100 Subject: [U-Boot-Users] icache/dcache not working on PPC440 In-Reply-To: <20070302165405.D76C6352629@atlas.denx.de> References: <20070302165405.D76C6352629@atlas.denx.de> Message-ID: <200703021851.20899.sr@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Wolfgang, On Friday 02 March 2007 17:54, Wolfgang Denk wrote: > In message <200703021749.03000.sr@denx.de> you wrote: > > As mentioned above the main problem is the EMAC driver. It has either to > > be changed to support cache handling (invalidating/flushing) of the > > buffer descriptors. Or we must setup one small area in the SDRAM that is > > uncached and the driver uses this memory area for the buffer descriptors. > > Other drivers may make similar assumptions. For 44x, I don't think so. > You will have to run a > pretty extensive set of regression testing (including other network > drivers, USB, ...) when attempting to perform such a change. Sure. This would be a major change and would need to be enabled in the board config file. And extensive testing of course. Viele Gr??e, Stefan ===================================================================== DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk Office: Kirchenstr. 5, D-82194 Groebenzell, Germany =====================================================================