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riscv: 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/20221123150257.3108-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Jisheng Zhang 2022-11-23 23:02:57 +08:00 committed by Palmer Dabbelt
parent 558480d3e7
commit de59b6ed06
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1 changed files with 3 additions and 0 deletions
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arch/riscv/boot/Makefile
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@ -56,6 +56,9 @@ $(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)
$(obj)/loader.bin: $(obj)/loader FORCE
$(call if_changed,objcopy)