[PATCH RESEND] ARM: add dtbImage.<dt> and dtbuImage.<dt> rules

[Nicolas Pitre]

On Mon, 30 Sep 2013, Maxime Bizon wrote:

> 
> On Mon, 2013-09-30 at 16:42 -0400, Jason Cooper wrote:
> 
> > Nicolas Pitre already suggested an impedance matcher that keeps this
> > kind of hacky code out of the kernel, and allows users to do exactly
> 
> I know that, my proposal was to bring this back into the kernel.

And obviously I disagree with such a proposal.

> That "kind of hacky" ATAG thing was actually the only supported way to
> boot a platform not so long ago :)

Strictly speaking, this was never supported in mainline.

> In the end, people needing the impedance matcher will somehow integrate
> it in the kernel build system anyway.

As long as it remains their own cost to maintain then nobody will 
object, which means "not in mainline".

The ultimate idea with the impedance matcher was to augment existing 
bootloaders with sort of a semi second stage bootloader that would be 
separate from zImage and installed permanently, and then only the zImage 
itself would be updateable.  This way you'd get a DT capable environment 
without replacing the actual bootloader.


Nicolas