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

Jason Cooper jason at lakedaemon.net
Fri Nov 15 10:21:42 EST 2013

On Fri, Nov 15, 2013 at 09:12:15PM +0900, Grant Likely wrote:
> On Mon, 11 Nov 2013 20:29:20 +0000, Jason Cooper <jason at lakedaemon.net> wrote:
> > Consumers of the Linux kernel's build products are beginning to hardcode
> > the filenames of the dtbs generated.  Since the dtb filenames are
> > currently the dts filename s/dts/dtb/, this prevents the kernel
> > community from renaming dts files as needed.
> > 
> > Let's provide a consistent naming structure for consumers to script
> > against.  Or at least, as consistent as the dts properties themselves.
> > 
> > With this patch, adding the '-L' option to the dtc commandline will
> > cause dtc to create a symlink to the generated dtb, using the board
> > compatible string as the filename, eg:
> > 
> >   globalscale,mirabox.dtb -> armada-370-mirabox.dtb
> This whole thread is just crazy. The filename is not an ABI. Anything
> digging into the kernel build tree is a) wrong, and b) userspace tooling
> consuming the kernel build products which is /not/ ABI and can be changed

whew.  I still think there is a need for an install target.  The fact
that our changing filenames might break things is an indicator of that.

> If we want to have a tool or script for creating a well formed directory
> full of .dtb files because it would be helpful to U-Boot or something
> else, then that is fine. Make it part of the "make install" path.

I'm currently reworking the patch(es) to implement 'make dtbs-install'.
I'll hopefully have them ready this weekend or sooner.  I'm taking the
same tack as install.sh (/sbin/installdtbs takes precedence).



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