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linux-sg2042
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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: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2013-03-22 22:04:27 +05:30
parent fb0990bbf5
commit 104058ede7
2 changed files with 17 additions and 5 deletions
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5
arch/arc/Makefile
View File

@ -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

17
arch/arc/boot/Makefile
View File

@ -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'