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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-03-06 00:01:43 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-03-12 18:43:31 +0100 |
| commit | e6ec5937e3bfc68e98d95939aea7012ada55199d (patch) | |
| tree | dc339f724125f489cff1b75a6b1dbbd06feb366e /scripts/Makefile.lib | |
| parent | e748e6c601934b084f66b0230f4c2fced52a085e (diff) | |
| download | barebox-e6ec5937e3bfc68e98d95939aea7012ada55199d.tar.gz barebox-e6ec5937e3bfc68e98d95939aea7012ada55199d.tar.xz | |
Makefile.lib: Add dtc support
Add rules to generate dtb files from dts/dtsi files,
optionally run the source files through the preprocessor.
Also add a rule to generate object files to include in
the barbox binary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'scripts/Makefile.lib')
| -rw-r--r-- | scripts/Makefile.lib | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 871c44b482..bbfd4cd2de 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -141,6 +141,11 @@ cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(__cpp_flags) ld_flags = $(LDFLAGS) $(EXTRA_LDFLAGS) +dtc_cpp_flags = -Wp,-MD,$(depfile) -nostdinc \ + -I$(srctree)/arch/$(SRCARCH)/dts \ + -I$(srctree)/arch/$(SRCARCH)/include/dts \ + -undef -D__DTS__ + # Finds the multi-part object the current object will be linked into modname-multi = $(sort $(foreach m,$(multi-used),\ $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) @@ -185,6 +190,42 @@ quiet_cmd_gzip = GZIP $@ cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ (rm -f $@ ; false) +# DTC +# --------------------------------------------------------------------------- + +# Generate an assembly file to wrap the output of the device tree compiler +quiet_cmd_dt_S_dtb= DTB $@ +cmd_dt_S_dtb= \ +( \ + echo '\#include <asm-generic/barebox.lds.h>'; \ + echo '.section .dtb.rodata.$(subst -,_,$(*F)),"a"'; \ + echo '.balign STRUCT_ALIGNMENT'; \ + echo '.global __dtb_$(subst -,_,$(*F))_start'; \ + echo '__dtb_$(subst -,_,$(*F))_start:'; \ + echo '.incbin "$<" '; \ + echo '__dtb_$(subst -,_,$(*F))_end:'; \ + echo '.global __dtb_$(subst -,_,$(*F))_end'; \ + echo '.balign STRUCT_ALIGNMENT'; \ +) > $@ + +$(obj)/%.dtb.S: $(obj)/%.dtb + $(call cmd,dt_S_dtb) + +quiet_cmd_dtc = DTC $@ +cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $< + +$(obj)/%.dtb: $(src)/%.dts FORCE + $(call if_changed_dep,dtc) + +dtc-tmp = $(subst $(comma),_,$(dot-target).dts) + +quiet_cmd_dtc_cpp = DTC+CPP $@ +cmd_dtc_cpp = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ + $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) $(dtc-tmp) + +$(obj)/%.dtb: $(src)/%.dtsp FORCE + $(call if_changed_dep,dtc_cpp) + # Bzip2 # --------------------------------------------------------------------------- |