2019-11-06 00:08:06

by Atish Patra

Subject: [PATCH] RISC-V: Add multiple compression image format.

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 <[email protected]>
---
arch/riscv/boot/Makefile | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile
index 0990a9fdbe5d..88356650c992 100644
--- a/arch/riscv/boot/Makefile
+++ b/arch/riscv/boot/Makefile
@@ -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)"
--
2.21.0

2019-11-06 17:51:47

by Palmer Dabbelt

Subject: Re: [PATCH] RISC-V: Add multiple compression image format.

On Tue, 05 Nov 2019 16:06:52 PST (-0800), Atish Patra wrote:
> 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 <[email protected]>
> ---
> arch/riscv/boot/Makefile | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile
> index 0990a9fdbe5d..88356650c992 100644
> --- a/arch/riscv/boot/Makefile
> +++ b/arch/riscv/boot/Makefile
> @@ -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)"

Reviewed-by: Palmer Dabbelt <[email protected]>

2019-11-12 19:36:38

by Paul Walmsley

Subject: Re: [PATCH] RISC-V: Add multiple compression image format.

On Tue, 5 Nov 2019, Atish Patra wrote:

> 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 <[email protected]>

Thanks, queued for v5.5-rc1.


- Paul