[U-Boot] [PATCH] spl: unbreak CONFIG_SPL_MULTI_DTB_FIT after fixing CONFIG_OF_EMBED

[Tom Rini <trini@konsulko.com>]

On Thu, Jan 11, 2018 at 07:55:03AM -0800, Simon Glass wrote:
> Hi Lokesh,
> 
> On 11 January 2018 at 00:33, Lokesh Vutla <lokeshvutla@ti.com> wrote:
> >
> >
> >
> > On Wednesday 10 January 2018 07:40 PM, Goldschmidt Simon wrote:
> > > On Wed, 10/01/18 09:48, Lokesh Vutla wrote:
> > >> On Wednesday 10 January 2018 12:32 PM, Goldschmidt Simon wrote:
> > >>> Commit 9bd76b80 "spl: make CONFIG_OF_EMBED pass dts through fdtgrep"
> > >>> moved the fdtgrep code from scripts/Makefile.spl to dts/Makefile so
> > >>> that the dtb is stripped in embedded mode, too.
> > >>>
> > >>> This broke CONFIG_SPL_MULTI_DTB_FIT where fdtgrep is still called from
> > >>> scripts/Makefile.spl to strip all dtbs in CONFIG_SPL_OF_LIST.
> > >>> To fix that, cmd_fdtgrep is brought back into scripts/Makefile.spl at
> > >>> the downside of having it duplicated in two makefiles.
> > >>
> > >> Missing Signed-off-by? Also a Reported-by credits would be nice :)
> > >
> > > Right. I'll add that in a next version, sorry.
> > >
> > >>
> > >>> ---
> > >>>  scripts/Makefile.spl | 16 ++++++++++++++++
> > >>>  1 file changed, 16 insertions(+)
> > >>>
> > >>> diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl index
> > >>> 64390e5785..72e74f14c3 100644
> > >>> --- a/scripts/Makefile.spl
> > >>> +++ b/scripts/Makefile.spl
> > >>> @@ -239,6 +239,22 @@ $(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN)
> > >>>     @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size
> > >> = $$1} END {print "ibase=16; " toupper(size)}' | bc); \
> > >>>     dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null;
> > >>>
> > >>> +# Pass the original device tree file through fdtgrep twice. The first
> > >>> +pass # removes any unwanted nodes (i.e. those which don't have the #
> > >>> +'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The
> > >>> +second # pass removes various unused properties from the remaining nodes.
> > >>> +# The output is typically a much smaller device tree file.
> > >>> +ifeq ($(CONFIG_TPL_BUILD),y)
> > >>> +fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl else
> > >>> +fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl endif
> > >>> +quiet_cmd_fdtgrep = FDTGREP $@
> > >>> +      cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
> > >>> +           -n /chosen -n /config -O dtb | \
> > >>> +   $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
> > >>> +           $(addprefix -P ,$(subst
> > >> $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
> > >>> +
> > >>
> > >> hmm..we are duplicating code here. Why can't dtb build for
> > >> CONFIG_OF_EMBED be moved to scripts/Makefile.spl?
> > >
> > > I don't like the code duplication either. Back in November, I tried
> > > to create the fdtgrep'ed ftd from Makefile.spl but failed. Seems I'm
> > > not a pro in makefiles... Of course I'd appreciate it if you'd find
> > > a solution for that!
> >
> > Simon, Tom,
> >         Any suggestions? Should we shift entire spl-dtb support to dts/Makefile?
> 
> We do try to keep logic out of the Makefiles in source-file subdirs,
> reserving it for the main Makefile and those in scripts/.But
> dts/Makefile is a bit of a special case, since there are no source
> files there. I don't have a strong opinion either way.

Welp, lets try shifting it then and see if things look cleaner overall
then, thanks!

-- 
Tom
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