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dts: generate multiple device tree blobs

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It is convenient to have all device trees on the same SoC compiled.
It allows for later easy repackaging without the need to re-run
the make file.

  - Build device trees with the same SoC under arch/$(ARCH)/dts

  - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or
    DEVICE_TREE=... to dts/dt.dtb

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit is contained in:
Masahiro Yamada 2014-02-05 11:28:27 +09:00 committed by Tom Rini
parent 5ab502cb89
commit 3284c8b8ca
7 changed files with 83 additions and 11 deletions
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1
arch/arm/dts/.gitignore vendored Normal file
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@ -0,0 +1 @@
*.dtb

37
arch/arm/dts/Makefile Normal file
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@ -0,0 +1,37 @@
dtb-$(CONFIG_EXYNOS5) += exynos5250-arndale.dtb \
exynos5250-snow.dtb \
exynos5250-smdk5250.dtb \
exynos5420-smdk5420.dtb
dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \
tegra20-medcom-wide.dtb \
tegra20-paz00.dtb \
tegra20-plutux.dtb \
tegra20-seaboard.dtb \
tegra20-tec.dtb \
tegra20-trimslice.dtb \
tegra20-ventana.dtb \
tegra20-whistler.dtb \
tegra20-colibri_t20_iris.dtb \
tegra30-beaver.dtb \
tegra30-cardhu.dtb \
tegra30-tec-ng.dtb \
tegra114-dalmore.dtb
dtb-$(CONFIG_ZYNQ) += zynq-zc702.dtb \
zynq-zc706.dtb \
zynq-zed.dtb \
zynq-microzed.dtb \
zynq-zc770-xm010.dtb \
zynq-zc770-xm012.dtb \
zynq-zc770-xm013.dtb
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000
PHONY += dtbs
dtbs: $(addprefix $(obj)/, $(dtb-y))
@:
clean-files := *.dtb

1
arch/microblaze/dts/.gitignore vendored Normal file
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@ -0,0 +1 @@
*.dtb

11
arch/microblaze/dts/Makefile Normal file
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@ -0,0 +1,11 @@
dtb-y += microblaze-generic.dtb
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000
PHONY += dtbs
dtbs: $(addprefix $(obj)/, $(dtb-y))
@:
clean-files := *.dtb

1
arch/x86/dts/.gitignore vendored Normal file
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@ -0,0 +1 @@
*.dtb

12
arch/x86/dts/Makefile Normal file
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@ -0,0 +1,12 @@
dtb-y += link.dtb \
alex.dtb
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000
PHONY += dtbs
dtbs: $(addprefix $(obj)/, $(dtb-y))
@:
clean-files := *.dtb

31
dts/Makefile
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@ -9,24 +9,30 @@
DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
ifeq ($(DEVICE_TREE),)
DEVICE_TREE := notfound
DEVICE_TREE := unset
endif
DTS := $(srctree)/arch/$(ARCH)/dts/$(DEVICE_TREE).dts
DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
DTC_FLAGS += -R 4 -p 0x1000
quiet_cmd_copy = COPY $@
cmd_copy = cp $< $@
$(obj)/dt.dtb: $(DTS) FORCE
$(call if_changed_dep,dtc)
$(obj)/dt.dtb: $(DTB) FORCE
$(call if_changed,copy)
targets += dt.dtb
$(DTS):
@echo >&2
@echo >&2 "Device Tree Source is not specified."
@echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"
@echo >&2 "or build with 'DEVICE_TREE=<dts-file-name>' argument"
@/bin/false
$(DTB): arch-dtbs
$(Q)test -e $@ || ( \
echo >&2; \
echo >&2 "Device Tree Source is not correctly specified."; \
echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
echo >&2; \
/bin/false)
arch-dtbs:
$(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
.SECONDARY: $(obj)/dt.dtb.S
@ -36,3 +42,6 @@ dtbs: $(obj)/dt.dtb
@:
clean-files := dt.dtb.S
# Let clean descend into dts directories
subdir- += ../arch/*/dts