[PATCH v4 03/11] scripts/Makefile.lib: Statically define *-u-boot.dtsi files location

[Sumit Garg]

Allow u-boot to build DTB from a different directory tree such that
*-u-boot.dtsi files can be included from a common location. Currently
that location is arch/$(ARCH)/dts/, so statically define that common
location.

This is needed for platform owners to start building DTB files from
devicetree-rebasing directory but still being able to include
*-u-boot.dtsi files.

Reviewed-by: Tom Rini <trini at konsulko.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
---

Changes in v4:
- Incorporate fix to resolve rk3399 migration issue reported by Simon.

Changes in v3:
- Picked up review tags

Changes in v2:
- s/UBOOT_DTSI_LOC/u_boot_dtsi_loc/

 scripts/Makefile.lib | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index f82b3169e87..fe2a0aadc41 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -159,18 +159,20 @@ cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
 
 # Try these files in order to find the U-Boot-specific .dtsi include file
-u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
-	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
-	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
-	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
-	$(wildcard $(dir $<)u-boot.dtsi))
+u_boot_dtsi_loc = $(srctree)/arch/$(ARCH)/dts/
+
+u_boot_dtsi_options = $(strip $(wildcard $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi) \
+	$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
+	$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
+	$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
+	$(wildcard $(u_boot_dtsi_loc)u-boot.dtsi))
 
 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
-	$(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
-	$(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
-	$(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
-	$(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
-	$(dir $<)u-boot.dtsi ... \
+	$(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi \
+	$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
+	$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
+	$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
+	$(u_boot_dtsi_loc)u-boot.dtsi ... \
 	found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
 
 # Uncomment for debugging
@@ -190,6 +192,7 @@ dtsi_include_list += $(CONFIG_DEVICE_TREE_INCLUDES)
 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
 		 $(UBOOTINCLUDE)                                         \
 		 -I$(dir $<)                                             \
+		 -I$(u_boot_dtsi_loc)                                     \
 		 -I$(srctree)/arch/$(ARCH)/dts/include                   \
 		 -I$(srctree)/include                                    \
 		 -D__ASSEMBLY__                                          \
@@ -328,7 +331,7 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 	  echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
 	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
 	$(DTC) -O dtb -o $@ -b 0 \
-		-i $(dir $<) $(DTC_FLAGS) \
+		-i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) || \
 		(echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
 		; \
@@ -354,7 +357,7 @@ ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE
 dtsi_include_list += $(capsule_esl_dtsi)
 endif
 
-dtsi_include_list_deps = $(addprefix $(obj)/,$(subst $(quote),,$(dtsi_include_list)))
+dtsi_include_list_deps = $(addprefix $(u_boot_dtsi_loc),$(subst $(quote),,$(dtsi_include_list)))
 
 ifneq ($(CHECK_DTBS),)
 DT_CHECKER ?= dt-validate
-- 
2.34.1