From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e4.ny.us.ibm.com (e4.ny.us.ibm.com [32.97.182.144]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e4.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id A2F3BDE483 for ; Wed, 7 May 2008 05:42:20 +1000 (EST) Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by e4.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id m46JgHZT027821 for ; Tue, 6 May 2008 15:42:17 -0400 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v8.7) with ESMTP id m46JgH4U264538 for ; Tue, 6 May 2008 15:42:17 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m46JgGqm011726 for ; Tue, 6 May 2008 15:42:16 -0400 Date: Tue, 6 May 2008 14:41:02 -0500 From: Josh Boyer To: Stefan Roese Subject: Re: [PATCH] [POWERPC] 4xx: Fix problem with new TLB storage attibute fields on 440x6 core Message-ID: <20080506144102.62a0ca95@zod.rchland.ibm.com> In-Reply-To: <200805061841.44277.sr@denx.de> References: <1209970399-4464-1-git-send-email-sr@denx.de> <20080506100117.22c88b09@zod.rchland.ibm.com> <200805061841.44277.sr@denx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 6 May 2008 18:41:44 +0200 Stefan Roese wrote: > On Tuesday 06 May 2008, Josh Boyer wrote: > > > The new 440x6 core used on AMCC 460EX/GT introduces new storage attibure > > > fields to the TLB2 word. Those are: > > > > > > Bit 11 12 13 14 15 > > > WL1 IL1I IL1D IL2I IL2D > > > > > > With these bits the cache (L1 and L2) can be configured in a more > > > flexible way, instruction- and data-cache independently now. The "old" I > > > and W bits are still available and setting these old bits will > > > automically set these new bits too (for backward compatibilty). > > > > > > The current code does not clear these fields resulting in disabling the > > > cache by chance. This patch now makes sure that these new bits are > > > cleared when the TLB2 word is written. > > > > > > Signed-off-by: Stefan Roese > > > > Finally catching back up with email. This looks like .26 material, > > correct? > > Definitely, yes. Figured. I have it queued up. josh