Re: [RFC] include DTB in linux-image files on armel
Ian Campbell <firstname.lastname@example.org> writes:
> On Fri, 2012-04-20 at 14:25 +0100, Ian Campbell wrote:
>> On Fri, 2012-04-20 at 13:35 +0200, Bastian Blank wrote:
>> > On Fri, Apr 20, 2012 at 11:11:27AM +0100, Ian Campbell wrote:
>> > > -install-image_armel_$(FEATURESET)_$(FLAVOUR)_plain_image \
>> > > +ifneq ($(filter armel,$(ARCH)),)
>> > > +install-image_$(ARCH)_$(FEATURESET)_$(FLAVOUR)_plain_image:
>> > What is this supposed to do?
>> I'm not sure. I copied the pattern from the similar powerpc case.
>> s390/s390x does the same.
>> Oh, I see, those cases both cover multiple arches and use $(ARCH), hence
>> need gating appropriately. As it stands my patch only support armel so
>> could use armel explicitly. Except I think we need to add armhf support
>> for this too and that would require this pattern.
> Here is an updated patch, supports armhf as well. There's not actually
afaik, some imx and omap boards have DT support in the 3.2 kernel but I
have less things supported. For instance, I guess that if you try to
boot a DT enabled kernel on imx53qsb/loco, you won't get sata support.
> any users in armhf AFAIK, actually until dreamplug support goes in there
> is none in armel either...
dreamplug and iomega iconnect if I manage to get iconnect support merged :)
> It now uses /usr/lib/linux-image-VERSION/foo.dtb which is consistent
> with the attached flash-kernel-install-dtb.patch which is under
> discussion in #667681.
> diff --git a/linux-2.6/debian/rules.real b/linux-2.6/debian/rules.real
> index a7f56c3..2fbcdc8 100644
> --- a/linux-2.6/debian/rules.real
> +++ b/linux-2.6/debian/rules.real
> @@ -356,8 +356,16 @@ endif
> PACKAGE_DIR='$(PACKAGE_DIR)' PACKAGE_NAME='$(PACKAGE_NAME)' REAL_VERSION='$(REAL_VERSION)'
> +$(MAKE_SELF) install-base
> -install-image_armel_$(FEATURESET)_$(FLAVOUR)_plain_image \
> -install-image_armhf_$(FEATURESET)_$(FLAVOUR)_plain_image \
> +ifneq ($(filter armel armhf,$(ARCH)),)
> +install-image_$(ARCH)_$(FEATURESET)_$(FLAVOUR)_plain_image: DTB_INSTALL_DIR = /usr/lib/linux-image-$(REAL_VERSION)
> + install -m644 '$(DIR)/arch/$(KERNEL_ARCH)/boot/zImage' $(INSTALL_DIR)/vmlinuz-$(REAL_VERSION)
> + +$(MAKE_CLEAN) -C $(DIR) dtbs
> + shopt -s nullglob ; for i in $(DIR)/arch/arm/boot/*.dtb ; do \
> + install -D -m644 $$i '$(PACKAGE_DIR)'/'$(DTB_INSTALL_DIR)'/$$(basename $$i) ; \
> + done
fwiw, I've looked at the powerpc kernel package and looks like that
they're shipping the DTS file and not the DTB. I've no opinion on this
except that if we choose to ship DTB, we need to be sure that dtc is
installed when building (I didn't check if it was already in build-deps).