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SubjectRe: DTB build failure due to preproccessing
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On Fri, 2013-05-31 at 12:48 +0100, Grant Likely wrote:
> On Fri, 31 May 2013 11:29:30 +0100, Ian Campbell <Ian.Campbell@citrix.com> wrote:
> > This affects arch/powerpc/boot/dts/virtex440-ml510.dts but I think it is
> > actually a more general issue:
> >
> > $ make ARCH=powerpc CROSS_COMPILE=powerpc-linux- virtex440-ml510.dtb
> > CC scripts/mod/devicetable-offsets.s
> > GEN scripts/mod/devicetable-offsets.h
> > HOSTCC scripts/mod/file2alias.o
> > HOSTLD scripts/mod/modpost
> > DTC arch/powerpc/boot/virtex440-ml510.dtb
> > Error: arch/powerpc/boot/dts/virtex440-ml510.dts:374.6-7 syntax error
> > FATAL ERROR: Unable to parse input tree
> > make[1]: *** [arch/powerpc/boot/virtex440-ml510.dtb] Error 1
> > make: *** [virtex440-ml510.dtb] Error 2
> >
> > Line 374 is the "IDSEL 0x16..." line here:
> > interrupt-map = <
> > /* IRQ mapping for pci slots and ALI M1533
> > ...
> > * management core also isn't used.
> > */
> >
> > /* IDSEL 0x16 / dev=6, bus=0 / PCI slot 3 */
> > 0x3000 0 0 1 &xps_intc_0 3 2
> > 0x3000 0 0 2 &xps_intc_0 2 2
> > 0x3000 0 0 3 &xps_intc_0 5 2
> > 0x3000 0 0 4 &xps_intc_0 4 2
> >
> > Which gets preprocessed into:
> > interrupt-map = <
> > # 375 "arch/powerpc/boot/dts/virtex440-ml510.dts"
> > 0x3000 0 0 1 &xps_intc_0 3 2
> > 0x3000 0 0 2 &xps_intc_0 2 2
> > 0x3000 0 0 3 &xps_intc_0 5 2
> > 0x3000 0 0 4 &xps_intc_0 4 2
> >
> > If I manually remove the "# 375 " line then that fixes the error
> > (although there is then a subsequent one of the same type).
> >
> > I suppose this is a bug in dtc? It appears to have at least some
> > awareness of these preprocessor line number comments since it manages to
> > report the original source line number.
>
> dtc is only able to track line numbers when the native /include/
> directive is used. The #include directive doesn't help it. It should be
> added, but until it is the following patch solves the problem:
>
> I've got this patch in my tree. Either Rob or I will push it to Linus in
> the next few days.

Thanks, I'll do something similar in my device-tree.git tree.

Ian




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