From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Wed, 23 Apr 2008 14:42:29 +0200 Subject: [U-Boot-Users] PPC440EPx/sequoia TLB question... In-Reply-To: <480EA8E1.4060207@verizon.net> References: <480EA8E1.4060207@verizon.net> Message-ID: <200804231442.29687.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 On Wednesday 23 April 2008, Dave Littell wrote: > >From ?/board/amcc/sequoia/init.S: > > /* TLB-entry for Internal Registers & OCM */ > tlbentry( 0xe0000000, SZ_16M, 0xe0000000, 0, AC_R|AC_W|AC_X|SA_I ) > > Why is this memory region not marked Guarded? It would seem to meet the > definition of ?non-well-behaved?. Why do you think this is the case? > Also the TLB entry for SDRAM marks it Guarded, but that?s one area I > would think wouldn't need to be Guarded. This could be a mistake. Should work without G bis set too. Please give it a try and send a patch to fix it, if it works fine. Thanks. Best regards, Stefan ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de =====================================================================