[PATCH v4] Makefile: remove hardcoded device tree source directory

[Sumit Garg]

From: Bryan Brattlof <bb at ti.com>

Some boards that choose to utilize the OF_UPSTREAM directory for their
device tree files will need to specify that directory instead of the
traditional arch/$(ARCH)/dts/* path.

Include the correct path to the board's dtbs depending on if OF_UPSTREAM
is selected or not.

Signed-off-by: Bryan Brattlof <bb at ti.com>
Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
---

Changes in v4:
- Split out as a seperate patch from [1] since it's a dependency for
  other platforms to switch to OF_UPSTREAM.
- Removed further hardcoded arch/$(ARCH)/dts/* path.

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=396742

 Makefile             | 22 ++++++++++++++++------
 scripts/Makefile.spl | 17 +++++++++++++----
 2 files changed, 29 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index 2643d1839b63..ff742ea3a8b8 100644
--- a/Makefile
+++ b/Makefile
@@ -1184,6 +1184,16 @@ dt_binding_check: scripts_dtc
 quiet_cmd_copy = COPY    $@
       cmd_copy = cp $< $@
 
+ifeq ($(CONFIG_OF_UPSTREAM),y)
+ifeq ($(CONFIG_ARM64),y)
+dt_dir := dts/upstream/src/arm64
+else
+dt_dir := dts/upstream/src/$(ARCH)
+endif
+else
+dt_dir := arch/$(ARCH)/dts
+endif
+
 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
 
 ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y)
@@ -1209,7 +1219,7 @@ endif
 
 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
 	-a 0 -e 0 -E \
-	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
+	$(patsubst %,-b $(dt_dir)/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
 
 MKIMAGEFLAGS_fit-dtb.blob += -B 0x8
 
@@ -1362,7 +1372,7 @@ cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \
 		build -u -d u-boot.dtb -O . -m \
 		--allow-missing $(if $(BINMAN_ALLOW_MISSING),--ignore-missing) \
 		-I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
-		-I arch/$(ARCH)/dts -a of-list=$(CONFIG_OF_LIST) \
+		-I $(dt_dir) -a of-list=$(CONFIG_OF_LIST) \
 		$(foreach f,$(BINMAN_INDIRS),-I $(f)) \
 		-a atf-bl31-path=${BL31} \
 		-a tee-os-path=${TEE} \
@@ -1398,7 +1408,7 @@ ifneq ($(CONFIG_USE_SPL_FIT_GENERATOR),)
 U_BOOT_ITS := u-boot.its
 $(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
 	$(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
-	$(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
+	$(patsubst %,$(dt_dir)/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
 endif
 endif
 
@@ -1407,9 +1417,9 @@ MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
 	-a $(CONFIG_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 	-p $(CONFIG_FIT_EXTERNAL_OFFSET) \
 	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
-	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(DEVICE_TREE))) \
-	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) \
-	$(patsubst %,-b arch/$(ARCH)/dts/%.dtbo,$(subst ",,$(CONFIG_OF_OVERLAY_LIST)))
+	$(patsubst %,-b $(dt_dir)/%.dtb,$(subst ",,$(DEVICE_TREE))) \
+	$(patsubst %,-b $(dt_dir)/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) \
+	$(patsubst %,-b $(dt_dir)/%.dtbo,$(subst ",,$(CONFIG_OF_OVERLAY_LIST)))
 else
 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 	-a $(CONFIG_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
index 407fc52376a5..d074ba235006 100644
--- a/scripts/Makefile.spl
+++ b/scripts/Makefile.spl
@@ -559,9 +559,15 @@ FORCE:
 $(obj)/dts/dt-$(SPL_NAME).dtb: dts/dt.dtb
 	$(Q)$(MAKE) $(build)=$(obj)/dts spl_dtbs
 
-PHONY += dts_dir
-dts_dir:
-	$(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts)
+ifeq ($(CONFIG_OF_UPSTREAM),y)
+ifeq ($(CONFIG_ARM64),y)
+dt_dir := dts/upstream/src/arm64
+else
+dt_dir := dts/upstream/src/$(ARCH)
+endif
+else
+dt_dir := arch/$(ARCH)/dts
+endif
 
 # Declare the contents of the .PHONY variable as phony.  We keep that
 # information in a variable so we can use it in if_changed and friends.
@@ -569,8 +575,11 @@ dts_dir:
 
 SPL_OF_LIST_TARGETS = $(patsubst %,dts/%.dtb,$(subst ",,$(CONFIG_SPL_OF_LIST)))
 SHRUNK_ARCH_DTB = $(addprefix $(obj)/,$(SPL_OF_LIST_TARGETS))
+$(dir $(SHRUNK_ARCH_DTB)):
+	$(shell [ -d $@ ] || mkdir -p $@)
+
 .SECONDEXPANSION:
-$(SHRUNK_ARCH_DTB): $$(patsubst $(obj)/dts/%, arch/$(ARCH)/dts/%, $$@) dts_dir
+$(SHRUNK_ARCH_DTB): $$(patsubst $(obj)/dts/%, $(dt_dir)/%, $$@) $(dir $(SHRUNK_ARCH_DTB))
 	$(call if_changed,fdtgrep)
 
 targets += $(SPL_OF_LIST_TARGETS)
-- 
2.34.1