[PATCH V5] kbuild: dtbs_install: new make target

[Jason Cooper]

On Fri, Nov 22, 2013 at 07:44:11AM +0000, Grant Likely wrote:
> On Thu, 21 Nov 2013 19:35:52 +0000, Jason Cooper <jason at lakedaemon.net> wrote:
> > Unlike other build products in the Linux kernel, there is no 'make
> > *install' mechanism to put devicetree blobs in a standard place.
> > 
> > This patch is an attempt to fix this problem.  Akin to 'make install',
> > this creates a new make target, dtbs_install.  The script that gets
> > called defers to a distribution or user supplied installdtbs binary,
> > if found in the system.  Otherwise, the default action is to install a
> > given dtb into
> > 
> >   /boot/devicetrees/${kernel_version}/${dts_filename}.dtb
> > 
> > This is done to keep dtbs from different kernel versions separate until
> > things have settled down.  Once the dtbs are stable, and not so strongly
> > linked to the kernel version, the devicetree files will most likely move
> > to their own repo.  Users will need to upgrade install scripts at that
> > time.
> > 
> > Signed-off-by: Jason Cooper <jason at lakedaemon.net>
> > ---
> > changes since v4:
> >  - move make target from arch/arm/Makefile to Makefile (swarren)
> >  - change default install location to /boot/devicetrees/$KERNVER (swarren/gcl)
> >  - add INSTALL_DTBS_PATH for changing build root (jac)
> > 
> > changes since v3:
> >  - drop renaming files to ${compat}.dtb (rmk/swarren)
> >  - move installdtbs.sh to ./scripts/ (gcl)
> > 
> > changes since v2:
> >  - use fdtget instead of a modified dtc to get the board compat string
> > 
> > changes since v1:
> >  - added this patch
> > 
> >  Makefile               | 20 +++++++++++++++++++-
> 
> Adding it to Makefile enables it unconditionally for all architectures,
> even the ones with no DT support. I suspect (but have no evidence for)
> that this will be considered bad form. I have no problem with each
> architecture adding the build rule explicitly. The script is in a common
> place and that is the important bit.

Ok, once we nail down Olof's concern, I'll move the target back to
arch/arm/Makefile

thx,

Jason.