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arm64: boot: add zstd support

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Support build the zstd compressed Image.zst. Similar as other
compressed formats, the Image.zst is not self-decompressing and
the bootloader still needs to handle decompression before
launching the kernel image.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20220619170657.2657-1-jszhang@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jisheng Zhang 2022-06-20 01:06:57 +08:00 committed by Will Deacon
parent a111daf0c5
commit 9f6a503d52
1 changed files with 4 additions and 1 deletions
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5
arch/arm64/boot/Makefile
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@ -16,7 +16,7 @@
OBJCOPYFLAGS_Image :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo
targets := Image Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo Image.zst
$(obj)/Image: vmlinux FORCE
$(call if_changed,objcopy)
@ -35,3 +35,6 @@ $(obj)/Image.lzma: $(obj)/Image FORCE
$(obj)/Image.lzo: $(obj)/Image FORCE
$(call if_changed,lzo)
$(obj)/Image.zst: $(obj)/Image FORCE
$(call if_changed,zstd)