Hello Wolfgang, On Tue, May 11, 2010 at 4:56 AM, Wolfgang Denk <w...@denx.de> wrote:
> Dear "George G. Davis", > > In message <aanlktimwgvcvjx0dlg7ic5xqb-crzduqxpvwue3lp...@mail.gmail.com> > you wrote: > > > > > Why don't we have to invalidate/flush the I- and BT-Cache here? I.e. > why > > is it sufficient to clean & invalidate the D-Cache here, only, and remove > > the existing I- and BT-Cache invalidation/flushing? > > > > Quite frankly I thought for sure that it was handled elsewhere but now > > that I look I see that it's not. Meanwhile, I don't think U-Boot is > > typically susceptible to self-modifying-code issues anyway (?) and > > What has self-modifying-code to do with it? Proper cache handling is > mandatory in manyother siutuations as well, including when you load > code (Linux kernel, standalone applications) and then try to execute > these, or when dealing with I/O buffers, DMA, etc. > > > this isn't likely required but I suppose lack of I+BTB invalidation > > I think it is mandatory. > Yes, you're right. New patch on the way shortly... -- Regards, George > > > Best regards, > > Wolfgang Denk > > -- > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de > A direct quote from the Boss: "We passed over a lot of good people to > get the ones we hired." >
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