rework MMU support

[Jean-Christophe PLAGNIOL-VILLARD]

On 17:54 Mon 01 Aug     , Sascha Hauer wrote:
> On Mon, Aug 01, 2011 at 03:26:43PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > Hi,
> > 
> > 	This series reworks the barebox MMU support. We now use second
> > 	level page tables which allows us to remap the dma coherent area
> > 	dynamically. We don't have to map our sdram twice anymore which
> > 	helps us on newer systems with big memory.
> > 
> > 	As a bonus there is no board specific MMU code anymore. All a board
> > 	has to do to enable MMU support via Kconfig is to register its SDRAM banks
> > 	at mem_initcall
> > 
> > The following changes since commit b821d73607cc6387b1ee588af97a44e8eb2b4fe2:
> > 
> >   Merge branch 'resource' of git://uboot.jcrosoft.org/barebox into next (2011-08-01 14:10:38 +0200)
> > 
> > are available in the git repository at:
> > 
> >   git://uboot.jcrosoft.org/barebox.git mmu
> > 
> > Jean-Christophe PLAGNIOL-VILLARD (2):
> >       arm: introduce arm_add_mem_device to register dram device
> >       init: introduce mem, mmu and postmmu initcall
> > 
> > Sascha Hauer (7):
> >       ARM cache l2x0: depend on MMU
> >       ARM: move armlinux_add_dram to location which is always compiled
> >       ARM l2x0: make init function static inline if l2 is not available
> >       ARM: pass size to dma_free_coherent
> >       ARM boards: move sdram setup before mmu setup
> >       ARM: rework MMU support
> >       ARM boards: remove now unnecessary mmu calls
> 
> merged up to 7/9. The MMU rework needs some changes to v1 which I
> haven't posted yet. It does not work correctly on armv7 as these
> processors need slightly different second level page table entries.
> 
> Also, I added the appropriate KEEP directives to
> include/asm-generic/barebox.lds.h to make this branch work. Would be
> good if you could give your patches at least *some* testing.
I've no armv7 availlable work fine

I test it on at91 and s3c and versatile work fine

but no mmu yet
 and I compiled all ARM

 Best Regards,
 J.