On Mon, Jan 9, 2012 at 3:27 AM, Joe Woodward <[email protected]> wrote: > Commit "armv7: disable L2 cache in cleanup_before_linux()" on 6th Dec 2011 by > Aneesh V adds the following: > > arch/arm/cpu/armv7/cpu.c:cleanup_before_linux() > > ... > v7_out_cache_disable(); > ... > > The commit message implies this change was to make booting reliable on OMAP4 > by disabling L2 cache before jumping to Linux. > > However, when running with a stock 3.2 Linux kernel on an OMAP3 it has the > effect of massively reducing system performance (when running using an OMAP3- > only 3.2 Linux Kernel on a GUSMTIX Overo OMAP3530). > > Therefore, I assume this means that the kernel isn't turning the L2 cache > back on for an OMAP3 (at least with my kernel build)! > > So, my question is... > > Are there any Kconfig options in Linux that will re-enable the L2 cache > (something obvious that I've missed), or is this commit just bad-news for > OMAP3?
Are you certain that this is the commit that's causing your problem? The kernel is responsible for turning the cache back on and has for a long time, iirc. -- Tom _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
