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https://github.com/torvalds/linux
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7c43185138
This hooks dtc into Kbuild's dependency system. Thus, for example, "make dtbs" will rebuild tegra-harmony.dtb if only tegra20.dtsi has changed yet tegra-harmony.dts has not. The previous lack of this feature recently caused me to have very confusing "git bisect" results. For ARM, it's obvious what to add to $(targets). I'm not familiar enough with other architectures to know what to add there. Powerpc appears to already add various .dtb files into $(targets), but the other archs may need something added to $(targets) to work. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> [mmarek: Dropped arch/c6x part to avoid merging commits from the middle of the merge window] Signed-off-by: Michal Marek <mmarek@suse.cz>
59 lines
1.4 KiB
Makefile
59 lines
1.4 KiB
Makefile
#
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# arch/microblaze/boot/Makefile
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#
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MKIMAGE := $(srctree)/scripts/mkuboot.sh
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obj-y += linked_dtb.o
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targets := linux.bin linux.bin.gz simpleImage.%
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OBJCOPYFLAGS := -O binary
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# Ensure system.dtb exists
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$(obj)/linked_dtb.o: $(obj)/system.dtb
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# Generate system.dtb from $(DTB).dtb
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ifneq ($(DTB),system)
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$(obj)/system.dtb: $(obj)/$(DTB).dtb
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$(call if_changed,cp)
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endif
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$(obj)/linux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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$(call if_changed,uimage)
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@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
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$(obj)/linux.bin.gz: $(obj)/linux.bin FORCE
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$(call if_changed,gzip)
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@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
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quiet_cmd_cp = CP $< $@$2
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cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
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quiet_cmd_strip = STRIP $@
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cmd_strip = $(STRIP) -K microblaze_start -K _end -K __log_buf \
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-K _fdt_start vmlinux -o $@
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quiet_cmd_uimage = UIMAGE $@.ub
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cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A microblaze -O linux -T kernel \
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-C none -n 'Linux-$(KERNELRELEASE)' \
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-a $(CONFIG_KERNEL_BASE_ADDR) -e $(CONFIG_KERNEL_BASE_ADDR) \
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-d $@ $@.ub
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$(obj)/simpleImage.%: vmlinux FORCE
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$(call if_changed,cp,.unstrip)
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$(call if_changed,objcopy)
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$(call if_changed,uimage)
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$(call if_changed,strip)
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@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
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# Rule to build device tree blobs
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DTC_FLAGS := -p 1024
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$(obj)/%.dtb: $(src)/dts/%.dts FORCE
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$(call if_changed_dep,dtc)
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clean-files += *.dtb simpleImage.*.unstrip linux.bin.ub
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