From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Thompson Date: Tue, 26 Jan 2010 17:13:12 +0000 Subject: [U-Boot] [PATCH RFC 0/2] dcache on ARM In-Reply-To: <20100126161608.GA20946@morgana.gnudd.com> References: <20100126161608.GA20946@morgana.gnudd.com> Message-ID: <4B5F22A8.1000804@ge.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 26/01/10 16:16, Alessandro Rubini wrote: > These patches enable the dcache for ARM9. It's mainly an RFC, as some > details are still to be sorted out, but they work fine (and the speed > increase is noticeable for kernel boots and cp.b -- didn't make more > tests. I'm all for speed increases :-) On TI DA830, the 1.0 & 1.1 revision of the silicon have a data caching bug. You can use data caching, but only in write thru' mode. This is fixed in the very latest 2.0 silicon. Even still it is better than no caching as proved in Linux. Is it simple for you to enable different levels of caching by config? Nick.