Commit 104058ed authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: [build] Allow uncompressed uImage 



The existing uImage target always generates gzip compressed image which
drags bootup for some very slow FPGA customer boards.

So introduce seperate make targets:uImage.{bin,gz} with uncompressed
being default. Also tie gz generation to CONFIG_KERNEL_GZIP, which a
platform can select in it's Kconfig if it wishes gz to be default.

Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent fb0990bb

arch/arc/Makefile

+3 −2
Original line number Diff line number Diff line
@@ -102,10 +102,11 @@ boot := arch/arc/boot 
KBUILD_IMAGE	:= bootpImage



all:	$(KBUILD_IMAGE)



bootpImage: vmlinux



uImage: vmlinux

boot_targets += uImage uImage.bin uImage.gz



$(boot_targets): vmlinux

	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@



%.dtb %.dtb.S %.dtb.o: scripts

arch/arc/boot/Makefile

+14 −3
Original line number Diff line number Diff line
@@ -11,7 +11,12 @@ LINUX_START_TEXT = $$(readelf -h vmlinux | \ 


UIMAGE_LOADADDR    = $(CONFIG_LINUX_LINK_BASE)

UIMAGE_ENTRYADDR   = $(LINUX_START_TEXT)

UIMAGE_COMPRESSION = gzip



suffix-y := bin

suffix-$(CONFIG_KERNEL_GZIP)	:= gz



targets += uImage uImage.bin uImage.gz

extra-y += vmlinux.bin vmlinux.bin.gz



$(obj)/vmlinux.bin: vmlinux FORCE

	$(call if_changed,objcopy)
@@ -19,6 +24,12 @@ $(obj)/vmlinux.bin: vmlinux FORCE 
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE

	$(call if_changed,gzip)



$(obj)/uImage: $(obj)/vmlinux.bin.gz FORCE

	$(call if_changed,uimage)

$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE

	$(call if_changed,uimage,none)



$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE

	$(call if_changed,uimage,gzip)



$(obj)/uImage: $(obj)/uImage.$(suffix-y)

	@ln -sf $(notdir $<) $@

	@echo '  Image $@ is ready'

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