[PATCH 6/6] ARM: Add relocatable binary support

[Sascha Hauer]

On Tue, Mar 05, 2013 at 08:32:11AM +0400, Alexander Shiyan wrote:
> > On Tue, Mar 05, 2013 at 12:10:02AM +0400, Alexander Shiyan wrote:
> > > > For making the same binary executable on different SoCs which have
> > > > different DRAM addresses we have to be independent of the compile
> > > > time link address.
> > > > 
> > > > This patch adds relocatable binary support for the ARM architecture.
> > > > With this two new functions are available. relocate_to_current_adr
> > > > will fixup the binary to continue executing from the current position.
> > > > relocate_to_adr will copy the binary to a given address, fixup the
> > > > binary and continue executing from there.
> > > > 
> > > > For the PBL and the real image relocatable support can be enabled
> > > > independently. This is done to (hopefully) better cope with setups
> > > > where the PBL runs from SRAM or ROM and the real binary does not.
> > > > 
> > > > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > > ...
> > > 
> > > Hello.
> > > 
> > > I just suggest put this new stuff under EXPERIMENTAL condition.
> > > Thanks.
> > 
> > I'm unsure this makes sense. In the kernel currently 388 options depend
> > on EXPERIMENTAL and 433 out of 438 defconfigs have EXPERIMENTAL enabled.
> > This recently led to the discussion whether this option should be
> > removed from the Kernel.
> 
> OK.
> 
> One more thing. You are introduce "RELOCATABLE" symbol in arm/Kconfig,
> but symbol with same name is already exist in common/Kconfig. On
> my opinion this is no so good.

Indeed. This was not intentional. I removed it from arch/arm/Kconfig

Sascha

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