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image: improve uImage.FIT device tree overlay support

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Instead of generating full config nodes incl. kernel, generate minimal
config nodes for device tree overlays to be applied to the main config.
In this way, multiple device tree overlays can be applied more easily.
While at it change filenames to upstream style, ie. use dtso and dtbo
suffix for device tree overlays.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 6b01d40bfedb42323a1324e1b5624f192a4c91de)
This commit is contained in:
Daniel Golle 2023-06-04 15:57:25 +01:00
parent d46e13d864
commit d05d886d22
3 changed files with 22 additions and 8 deletions
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2
include/image-commands.mk
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@ -307,7 +307,7 @@ define Build/fit
$(if $(DEVICE_FDT_NUM),-n $(DEVICE_FDT_NUM)) \
$(if $(DEVICE_DTS_DELIMITER),-l $(DEVICE_DTS_DELIMITER)) \
$(if $(DEVICE_DTS_LOADADDR),-s $(DEVICE_DTS_LOADADDR)) \
$(if $(DEVICE_DTS_OVERLAY),$(foreach dtso,$(DEVICE_DTS_OVERLAY), -O $(dtso):$(KERNEL_BUILD_DIR)/image-$(dtso).dtb)) \
$(if $(DEVICE_DTS_OVERLAY),$(foreach dtso,$(DEVICE_DTS_OVERLAY), -O $(dtso):$(KERNEL_BUILD_DIR)/image-$(dtso).dtbo)) \
-c $(if $(DEVICE_DTS_CONFIG),$(DEVICE_DTS_CONFIG),"config-1") \
-A $(LINUX_KARCH) -v $(LINUX_VERSION)
PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage $(if $(findstring external,$(word 3,$(1))),\

19
include/image.mk
View File

@ -554,16 +554,33 @@ define Device/Build/dtb
image_prepare: $(KDIR)/image-$(1).dtb
endif
endef
define Device/Build/dtbo
ifndef BUILD_DTS_$(1)
BUILD_DTS_$(1) := 1
$(KDIR)/image-$(1).dtbo: FORCE
$(call Image/BuildDTB,$(strip $(2))/$(strip $(3)).dtso,$$@)
image_prepare: $(KDIR)/image-$(1).dtbo
endif
endef
endif
define Device/Build/kernel
$$(eval $$(foreach dts,$$(DEVICE_DTS) $$(DEVICE_DTS_OVERLAY), \
$$(eval $$(foreach dts,$$(DEVICE_DTS), \
$$(call Device/Build/dtb,$$(notdir $$(dts)), \
$$(if $$(DEVICE_DTS_DIR),$$(DEVICE_DTS_DIR),$$(DTS_DIR)), \
$$(dts) \
) \
))
$$(eval $$(foreach dtso,$$(DEVICE_DTS_OVERLAY), \
$$(call Device/Build/dtbo,$$(notdir $$(dtso)), \
$$(if $$(DEVICE_DTS_DIR),$$(DEVICE_DTS_DIR),$$(DTS_DIR)), \
$$(dtso) \
) \
))
$(KDIR)/$$(KERNEL_NAME):: image_prepare
$$(_TARGET): $$(if $$(KERNEL_INSTALL),$(BIN_DIR)/$$(KERNEL_IMAGE))

9
scripts/mkits.sh
View File

@ -191,13 +191,10 @@ OVCONFIGS=""
"
OVCONFIGS="$OVCONFIGS
config-$ovname {
description = \"OpenWrt ${DEVICE} with $ovname\";
kernel = \"kernel${REFERENCE_CHAR}1\";
fdt = \"fdt${REFERENCE_CHAR}$FDTNUM\", \"$ovnode\";
${LOADABLES:+loadables = ${LOADABLES};}
$ovname {
description = \"OpenWrt ${DEVICE} overlay $ovname\";
fdt = \"$ovnode\";
${COMPATIBLE_PROP}
${INITRD_PROP}
};
"
done