[U-Boot-Users] [Patch] Disable icache before call the first line of kernel in do_bootelf().

[Mike Frysinger <vapier@gentoo.org>]

On Wednesday 30 January 2008, Johannes Stezenbach wrote:
> On Tue, Jan 29, 2008 at 07:12:10PM -0500, Mike Frysinger wrote:
> > On Tuesday 29 January 2008, Wolfgang Denk wrote:
> > > In message <200801282114.14393.vapier@gentoo.org> you wrote:
> > > > unfortunately, using weak symbols and overriding elsewhere doesnt
> > > > look like it's possible currently due to the way ld searches
> > > > archives.  for example, if
> > >
> > > ???
> > >
> > > > ld will pick the weak symbol provided by libcommon.a even though a
> > > > strong symbol is also available in libblackfin.a :(
> > >
> > > That should never happen. What is your toolchain?
> >
> > read the binutils mailing list.  this is the expected behavior of ld.
> >
> > http://sourceware.org/ml/binutils/2008-01/msg00301.html
>
> Overriding weak with strong symbols works just fine, however
> in your case ld has no reason to even look at your override,
> since it already has a (weak) definition for do_bootelf_setup().
>
> Thus the solution for your problem is to give ld a reason
> to pull in your do_bootelf_setup() definition. There are
> two ways:
>
> - explicitly list the .o file on the linker command line,
>   i.e. add it to $(OBJS) or $(PLATFORM_LIBS) instead
>   of libblackfin.a
>
> - put the do_bootelf_setup() definition in a .o file
>   along with some other code you know will be pulled in,
>   e.g. add it to lib_blackfin/cache.c instead of putting
>   it in its own file

thanks ... i had created a dedicated .c file for it of only strong symbols 
which would override the weaks, but as you say, with no other compelling 
reason to look at the object, ld wasnt considering it
-mike
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