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RISC-V: Add multiple compression image format.

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Currently, there is only support for .gz compression type
for generating kernel Image.

Add support for other compression methods(lzma, lz4, lzo, bzip2)
that helps in generating a even smaller kernel image. Image.gz
will still be the default compressed image.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
This commit is contained in:
Atish Patra 2019-11-05 16:06:52 -08:00 committed by Paul Walmsley
parent 6b57ba8ed4
commit 8083c629dc
1 changed files with 12 additions and 0 deletions
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12
arch/riscv/boot/Makefile
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@ -24,6 +24,18 @@ $(obj)/Image: vmlinux FORCE
$(obj)/Image.gz: $(obj)/Image FORCE
$(call if_changed,gzip)
$(obj)/Image.bz2: $(obj)/Image FORCE
$(call if_changed,bzip2)
$(obj)/Image.lz4: $(obj)/Image FORCE
$(call if_changed,lz4)
$(obj)/Image.lzma: $(obj)/Image FORCE
$(call if_changed,lzma)
$(obj)/Image.lzo: $(obj)/Image FORCE
$(call if_changed,lzo)
install:
$(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
$(obj)/Image System.map "$(INSTALL_PATH)"