Attachment #631336 for bug #716520

Lines 173-185 config HAVE_KERNEL_LZO Link Here

(-)a/init/Kconfig (-1 / +14 lines)
173	config HAVE_KERNEL_LZ4	173	config HAVE_KERNEL_LZ4
174	bool	174	bool
175		175
		176	config HAVE_KERNEL_ZSTD
		177	bool
		178
176	config HAVE_KERNEL_UNCOMPRESSED	179	config HAVE_KERNEL_UNCOMPRESSED
177	bool	180	bool
178		181
179	choice	182	choice
180	prompt "Kernel compression mode"	183	prompt "Kernel compression mode"
181	default KERNEL_GZIP	184	default KERNEL_GZIP
182	depends on HAVE_KERNEL_GZIP \|\| HAVE_KERNEL_BZIP2 \|\| HAVE_KERNEL_LZMA \|\| HAVE_KERNEL_XZ \|\| HAVE_KERNEL_LZO \|\| HAVE_KERNEL_LZ4 \|\| HAVE_KERNEL_UNCOMPRESSED	185	depends on HAVE_KERNEL_GZIP \|\| HAVE_KERNEL_BZIP2 \|\| HAVE_KERNEL_LZMA \|\| HAVE_KERNEL_XZ \|\| HAVE_KERNEL_LZO \|\| HAVE_KERNEL_LZ4 \|\| HAVE_KERNEL_ZSTD \|\| HAVE_KERNEL_UNCOMPRESSED
183	help	186	help
184	The linux kernel is a kind of self-extracting executable.	187	The linux kernel is a kind of self-extracting executable.
185	Several compression algorithms are available, which differ	188	Several compression algorithms are available, which differ
Lines 258-263 config KERNEL_LZ4 Link Here
258	is about 8% bigger than LZO. But the decompression speed is	261	is about 8% bigger than LZO. But the decompression speed is
259	faster than LZO.	262	faster than LZO.
260		263
		264	config KERNEL_ZSTD
		265	bool "ZSTD"
		266	depends on HAVE_KERNEL_ZSTD
		267	help
		268	ZSTD is a compression algorithm targeting intermediate compression
		269	with fast decompression speed. It will compress better than GZIP and
		270	decompress around the same speed as LZO, but slower than LZ4. You
		271	will need at least 192 KB RAM or more for booting. The zstd command
		272	line tools is required for compression.
		273
261	config KERNEL_UNCOMPRESSED	274	config KERNEL_UNCOMPRESSED
262	bool "None"	275	bool "None"
263	depends on HAVE_KERNEL_UNCOMPRESSED	276	depends on HAVE_KERNEL_UNCOMPRESSED




quiet_cmd_xzmisc = XZMISC  $@
      cmd_xzmisc = cat $(real-prereqs) | xz --check=crc32 --lzma2=dict=1MiB > $@

# ZSTD
# ---------------------------------------------------------------------------
# Appends the uncompressed size of the data using size_append. The .zst
# format has the size information available at the beginning of the file too,
# but it's in a more complex format and it's good to avoid changing the part
# of the boot code that reads the uncompressed size.
# Note that the bytes added by size_append will make the zstd tool think that
# the file is corrupt. This is expected.

quiet_cmd_zstd = ZSTD    $@
cmd_zstd = (cat $(filter-out FORCE,$^) | \
	zstd -19 && \
        $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

# ASM offsets
# ---------------------------------------------------------------------------


Return to bug 716520

Lines 394-399 quiet_cmd_xzkern = XZKERN $@ Link Here

(-)a/scripts/Makefile.lib (+15 lines)
394	quiet_cmd_xzmisc = XZMISC $@	394	quiet_cmd_xzmisc = XZMISC $@
395	cmd_xzmisc = cat $(real-prereqs) \| xz --check=crc32 --lzma2=dict=1MiB > $@	395	cmd_xzmisc = cat $(real-prereqs) \| xz --check=crc32 --lzma2=dict=1MiB > $@
396		396
		397	# ZSTD
		398	# ---------------------------------------------------------------------------
		399	# Appends the uncompressed size of the data using size_append. The .zst
		400	# format has the size information available at the beginning of the file too,
		401	# but it's in a more complex format and it's good to avoid changing the part
		402	# of the boot code that reads the uncompressed size.
		403	# Note that the bytes added by size_append will make the zstd tool think that
		404	# the file is corrupt. This is expected.
		405
		406	quiet_cmd_zstd = ZSTD $@
		407	cmd_zstd = (cat $(filter-out FORCE,$^) \| \
		408	zstd -19 && \
		409	$(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
		410	(rm -f $@ ; false)
		411
397	# ASM offsets	412	# ASM offsets
398	# ---------------------------------------------------------------------------	413	# ---------------------------------------------------------------------------
399		414