[RFC DTC PATCH] dtc: add symlink (-L) output to dtbs

[Grant Likely]

On Thu, 14 Nov 2013 14:37:48 -0700, Stephen Warren <swarren at wwwdotorg.org> wrote:
> On 11/14/2013 12:16 PM, Jason Gunthorpe wrote:
> > On Thu, Nov 14, 2013 at 12:00:24PM -0700, Stephen Warren wrote:
> > 
> >> I don't think a distro should need to know the DTB filename at all.
> >> Rather, the/a bootloader should know which platform it's running on, and
> >> provide a variable/... to the boot script/... that defines the DTB
> >> filename. That would completely remove all the knowledge of DTB
> >> filenames from distros.
> > 
> > At some point the distro has to install a dtb into some cannonical
> > place so the bootloader can find it..
> > 
> > Are you thinking that distros will have to ship a /boot/dtbs/*.dtb
> > with every dtb from the kernel build?
> 
> Yes. How else would the distro support booting the install on arbitrary
> boards?
> 
> > What happens when you install two different versions of the kernel?
> 
> /boot/zImage-$version
> /boot/dtbs-$version/*.dtb
> 
> > What about boot schemes that can load a kernel version dependent dtb?
> 
> I think that's solved by installing the DTB files in a
> kernel-version-specific directory.

That's certainly the way I would solve it.

g.