For boards that need U-Boot-specific additions to the device tree, it is a minor annoyance to have to add these each time the tree is synced with upstream.
Add a means to include a file (e.g. u-boot.dtsi) automatically into the .dts file before it is compiled.
The file uses is the first one that exists in this list:
arch/<arch>/dts/<board.dts>-u-boot.dtsi arch/<arch>/dts/<cpu>-u-boot.dtsi arch/<arch>/dts/<vendor>-u-boot.dtsi arch/<arch>/dts/u-boot.dtsi
Signed-off-by: Simon Glass sjg@chromium.org Suggested-by: Tom Rini trini@konsulko.com ---
Changes in v3: - Add a new patch to automatically include a U-Boot .dtsi file
Changes in v2: None
scripts/Makefile.lib | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 2539ba5..b414a0c 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -164,6 +164,17 @@ cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
ld_flags = $(LDFLAGS) $(ldflags-y)
+dts_dir = $(srctree)/arch/$(ARCH)/dts + +# Try these files in order to find the U-Boot-specific .dtsi include file +binman_dtsi_options = $(wildcard $(dts_dir)/$(basename $(notdir $<))-u-boot.dtsi) \ + $(wildcard $(dts_dir)/$(subst $",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \ + $(wildcard $(dts_dir)/$(subst $",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \ + $(wildcard $(dts_dir)/u-boot.dtsi) + +# We use the first match +binman_dtsi = $(firstword $(binman_dtsi_options)) + # Modified for U-Boot dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ -I$(srctree)/arch/$(ARCH)/dts \ @@ -293,8 +304,10 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
quiet_cmd_dtc = DTC $@ # Modified for U-Boot +# Bring in any U-Boot-specific include after the '/dts-v1/;' header cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ - $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ + cat $< $(if $(binman_dtsi),| sed '/dts-v1/a#include "$(binman_dtsi)"') | \ + $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \ $(DTC) -O dtb -o $@ -b 0 \ -i $(dir $<) $(DTC_FLAGS) \ -d $(depfile).dtc.tmp $(dtc-tmp) ; \