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>
diff --git a/arch/arc/boot/Makefile b/arch/arc/boot/Makefile
index 70416a9..e597cb34 100644
--- a/arch/arc/boot/Makefile
+++ b/arch/arc/boot/Makefile
@@ -11,7 +11,12 @@
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.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'