Hi Lucas, On Tue, 05 Jun 2012 21:06:20 +0200, Lucas Stach <d...@lynxeye.de> wrote: > Hi Stephen, > > Am Dienstag, den 05.06.2012, 12:42 -0600 schrieb Stephen Warren: > > On 06/05/2012 11:47 AM, Lucas Stach wrote: > > > Recent toolchains default to using the hardware feature for > > > unaligned access on ARM v7, rather than doing the software > > > fallback. According to ARM this is safe as all v7 implementations > > > have to support this feature. > > > (http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0471c/BABJFFAE.html) > > > > > > To avoid CPU hangs when doing unaligned memory access, we have to > > > turn off alignment checking in our CPU initialisation code. > > > (http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0491c/CIHCGCFD.html) > > > > Does this behavior change trickle down to Linux/... too, or would > > an OS completely re-initialize this state, and hence not be > > affected? > > > > Linux in particular does reinitialize this state and I expect any > reasonable OS to do so.
Then what is the point of enabling it on U-Boot? Does it fix some issue whereby some mis-aligned piece of data cannot be properly aligned? Amicalement, -- Albert. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
