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dts: automatically build necessary .dtb files

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When building for a custom board, it is quite common to maintain a
private branch which include some defconfig and .dts files. But to
hook up those .dts files requires modifying a file "belonging" to
upstream U-Boot, the arch/*/dts/Makefile. Forward-porting that branch
to a newer upstream then often results in a conflict which, while it
is trivial to resolve by hand, makes it harder to have a CI do "try to
build our board against latest upstream".

The .config usually includes information on precisely what .dtb(s) are
needed, so to avoid having to modify the Makefile, simply add the
files in (SPL_)OF_LIST to dtb-y.

A technicality is that (SPL_)OF_LIST is not always defined, so rework
the Kconfig symbols so that (SPL_)OF_LIST is always defined (when
(SPL_)OF_CONTROL), but only prompted for in the cases which used to be
their "depends on".

nios2 and microblaze already have something like this in their
dts/Makefile, and the rationale in commit 41f59f6853 is similar to
the above. So this simply generalizes existing practice. Followup
patches could remove the logic in those two makefiles, just as there's
potential for moving some common boilerplate from all the
arch/*/dts/Makefile files to the new scripts/Makefile.dts.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Rasmus Villemoes 2022-01-10 14:34:41 +01:00 committed by Simon Glass
parent 8597032512
commit 3609e1dc5f
15 changed files with 33 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arc/dts/Makefile
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@ -8,6 +8,8 @@ dtb-$(CONFIG_TARGET_EMSDP) += emsdp.dtb
dtb-$(CONFIG_TARGET_HSDK) += hsdk.dtb hsdk-4xd.dtb
dtb-$(CONFIG_TARGET_IOT_DEVKIT) += iot_devkit.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/arm/dts/Makefile
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@ -1205,6 +1205,8 @@ dtb-$(CONFIG_TARGET_EA_LPC3250DEVKITV2) += lpc3250-ea3250.dtb
dtb-$(CONFIG_ARCH_QEMU) += qemu-arm.dtb qemu-arm64.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
# Add any required device tree compiler flags here

2
arch/m68k/dts/Makefile
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@ -18,6 +18,8 @@ dtb-$(CONFIG_TARGET_M5373EVB) += M5373EVB.dtb
dtb-$(CONFIG_TARGET_AMCORE) += amcore.dtb
dtb-$(CONFIG_TARGET_STMARK2) += stmark2.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/microblaze/dts/Makefile
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@ -2,6 +2,8 @@
dtb-y += $(shell echo $(CONFIG_DEFAULT_DEVICE_TREE)).dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/mips/dts/Makefile
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@ -34,6 +34,8 @@ dtb-$(CONFIG_SOC_JR2) += jr2_pcb110.dtb jr2_pcb111.dtb serval2_pcb112.dtb
dtb-$(CONFIG_SOC_SERVALT) += servalt_pcb116.dtb
dtb-$(CONFIG_SOC_SERVAL) += serval_pcb105.dtb serval_pcb106.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
# Add any required device tree compiler flags here

2
arch/nds32/dts/Makefile
View File

@ -2,6 +2,8 @@
dtb-$(CONFIG_TARGET_ADP_AG101P) += ag101p.dtb
dtb-$(CONFIG_TARGET_ADP_AE3XX) += ae3xx.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/nios2/dts/Makefile
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@ -2,6 +2,8 @@
dtb-y += $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%).dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/powerpc/dts/Makefile
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@ -30,6 +30,8 @@ dtb-$(CONFIG_TARGET_TUXX1) += kmtuxa1.dtb
dtb-$(CONFIG_TARGET_MCR3000) += mcr3000.dtb
dtb-$(CONFIG_TARGET_GAZERBEAM) += gazerbeam.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
# Add any required device tree compiler flags here

2
arch/riscv/dts/Makefile
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@ -8,6 +8,8 @@ dtb-$(CONFIG_TARGET_SIFIVE_UNLEASHED) += hifive-unleashed-a00.dtb
dtb-$(CONFIG_TARGET_SIFIVE_UNMATCHED) += hifive-unmatched-a00.dtb
dtb-$(CONFIG_TARGET_SIPEED_MAIX) += k210-maix-bit.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/sandbox/dts/Makefile
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@ -8,6 +8,8 @@ endif
dtb-$(CONFIG_UT_DM) += test.dtb
dtb-$(CONFIG_CMD_EXTENSION) += overlay0.dtbo overlay1.dtbo
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p 0x1000

2
arch/sh/dts/Makefile
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@ -1,5 +1,7 @@
dtb-y += sh7751-r2dplus.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
# Add any required device tree compiler flags here

2
arch/x86/dts/Makefile
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@ -22,6 +22,8 @@ dtb-y += bayleybay.dtb \
slimbootloader.dtb \
baytrail_som-db5800-som-6867.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS += -R 4 -p $(if $(CONFIG_EFI_APP),0x8000,0x1000)

2
arch/xtensa/dts/Makefile
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@ -2,6 +2,8 @@
dtb-$(CONFIG_XTFPGA) += ml605.dtb ml605_nommu.dtb kc705.dtb kc705_nommu.dtb
include $(srctree)/scripts/Makefile.dts
targets += $(dtb-y)
DTC_FLAGS +=

8
dts/Kconfig
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@ -157,8 +157,8 @@ config DEVICE_TREE_INCLUDES
.dtsi files that will also be used.
config OF_LIST
string "List of device tree files to include for DT control"
depends on SPL_LOAD_FIT || MULTI_DTB_FIT
string "List of device tree files to include for DT control" if SPL_LOAD_FIT || MULTI_DTB_FIT
depends on OF_CONTROL
default DEFAULT_DEVICE_TREE
help
This option specifies a list of device tree files to use for DT
@ -264,8 +264,8 @@ config SPL_MULTI_DTB_FIT
capabilities, pad configurations).
config SPL_OF_LIST
string "List of device tree files to include for DT control in SPL"
depends on SPL_MULTI_DTB_FIT
string "List of device tree files to include for DT control in SPL" if SPL_MULTI_DTB_FIT
depends on SPL_OF_CONTROL
default OF_LIST
help
This option specifies a list of device tree files to use for DT

3
scripts/Makefile.dts Normal file
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@ -0,0 +1,3 @@
# SPDX-License-Identifier: GPL-2.0+
dtb-y += $(patsubst %,%.dtb,$(subst ",,$(CONFIG_$(SPL_)OF_LIST)))