From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeroen Hofstee Date: Fri, 21 Jun 2013 20:46:47 +0200 Subject: [U-Boot] AM335x: enabling datacache in SPL slows down system? In-Reply-To: <20130621053330.B7CC8380BF2@gemini.denx.de> References: <20130620080523.aba38cb4@mail.altenpts.nl> <20130621053330.B7CC8380BF2@gemini.denx.de> Message-ID: <51C49F97.10300@myspectrum.nl> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello Wolfgang, On 06/21/2013 07:33 AM, Wolfgang Denk wrote: > We observed the very same issue with the verry first prototype > implementation of Falcon mode on an AM3517 based board. [..] For the am3517 the only thing needed is to add SRAM to the known memory. See [1], that should change the cache misses (which likely cause the extra delays) to actual caches. U-boot only adds the detected memory and since U-boot is running from DRAM and SPL is not, the difference seems obvious. Regards, Jeroen [1] http://lists.denx.de/pipermail/u-boot/2013-June/156949.html