Hi Marek, On Sat, 7 Jul 2012 09:59:52 +0200, Marek Vasut <marek.va...@gmail.com> wrote: > Dear Aneesh V, > > > Hi Marek, > > > > On 07/06/2012 04:32 PM, Tetsuyuki Kobayashi wrote: > > > Hello, > > > > > > On 2012/07/07, at 8:02, Marek Vasut wrote: > > >> Dear Aneesh V, > > >> > > >>> Enable -march=armv7-a for armv7 platforms if the tool-chain > > >>> supports it. This in turn results in Thumb-2 code generated > > >>> for these platforms if CONFIG_SYS_THUMB_BUILD is enabled. > > >>> > > >>> Signed-off-by: Aneesh V<ane...@ti.com> > > >>> --- > > >> > > >> For some reason, this patch breaks USB EHCI on mx51 efika boards. The > > >> board just freezes instead of detecting USB devices. Reverting this > > >> patch fixes the issue. > > >> > > >> Note I use gcc 4.7.1 (!), might be compiler issue? > > >> > > >> Tom, can you try on one of your beagle-dogs please? :) > > > > > > Just for your information, > > > I doubt unaligned access causes this problem. > > > > > > My investigation is here, > > > http://lists.denx.de/pipermail/u-boot/2012-June/127020.html > > > My patch > > > [PATCH] arm: armv7: add compile option -mno-unaligned-access if > available > > > http://lists.denx.de/pipermail/u-boot/2012-July/127260.html > > > > This makes sense. You might want to try this patch. Also, to be sure > > that it's nothing to do with Thumb you can make sure you are not > > enabling CONFIG_SYS_THUMB_BUILD. > > Ok, I think the patch should be applied then ? > > but what if the option isn't available?
If I am not mistaken, from an analysis standpoint, on compilers where the option is unavailable, there is no issue regarding alignment; and from a solution standpoint... We'll need to add the option only when cross-compiler version is known to honor it. > Best regards, > Marek Vasut Amicalement, -- Albert. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
