From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Thu, 21 Oct 2010 13:31:09 +0200 Subject: [U-Boot] AT91: USB and DCACHE issue (was: ELF_RELOC causes strange I-cache issues) In-Reply-To: <4CC02262.7040809@emk-elektronik.de> References: <4CC02262.7040809@emk-elektronik.de> Message-ID: <201010211331.10211.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 Thursday 21 October 2010 13:22:10 Reinhard Meyer wrote: > > Correct. Note that the EHCI driver already supports such a mode with > > d-cache enabled. You need to set CONFIG_EHCI_DCACHE to enable these > > cache handling functions. > > AT91 uses OHCI. > As far as I can tell there is no cache code in it. > And I am not sure whether the USB RAM is cache inhibited. > Do any other architectures work with DCACHE and OHCI? No, the OHCI code has no d-cache support right now. This needs to be added when used with d-cache enabled. Cheers, 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