The patch titled initramfs: add support for in-kernel initramfs compressed with LZO has been added to the -mm tree. Its filename is initramfs-add-support-for-in-kernel-initramfs-compressed-with-lzo.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: initramfs: add support for in-kernel initramfs compressed with LZO From: Albin Tonnerre <albin.tonnerre@xxxxxxxxxxxxxxxxxx> Add the necessary parts to be enable the use of LZO-compressed initramfs build into the kernel. Signed-off-by: Albin Tonnerre <albin.tonnerre@xxxxxxxxxxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: Michal Marek <mmarek@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/gen_initramfs_list.sh | 1 + usr/Makefile | 5 ++++- usr/initramfs_data.lzo.S | 29 +++++++++++++++++++++++++++++ 3 files changed, 34 insertions(+), 1 deletion(-) diff -puN scripts/gen_initramfs_list.sh~initramfs-add-support-for-in-kernel-initramfs-compressed-with-lzo scripts/gen_initramfs_list.sh --- a/scripts/gen_initramfs_list.sh~initramfs-add-support-for-in-kernel-initramfs-compressed-with-lzo +++ a/scripts/gen_initramfs_list.sh @@ -243,6 +243,7 @@ case "$arg" in echo "$output_file" | grep -q "\.gz$" && compr="gzip -9 -f" echo "$output_file" | grep -q "\.bz2$" && compr="bzip2 -9 -f" echo "$output_file" | grep -q "\.lzma$" && compr="lzma -9 -f" + echo "$output_file" | grep -q "\.lzo$" && compr="lzop -9 -f" echo "$output_file" | grep -q "\.cpio$" && compr="cat" shift ;; diff -puN usr/Makefile~initramfs-add-support-for-in-kernel-initramfs-compressed-with-lzo usr/Makefile --- a/usr/Makefile~initramfs-add-support-for-in-kernel-initramfs-compressed-with-lzo +++ a/usr/Makefile @@ -15,6 +15,9 @@ suffix_$(CONFIG_INITRAMFS_COMPRESSION_BZ # Lzma suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZMA) = .lzma +# Lzo +suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZO) = .lzo + # Generate builtin.o based on initramfs_data.o obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data$(suffix_y).o @@ -45,7 +48,7 @@ endif quiet_cmd_initfs = GEN $@ cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input) -targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio +targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio.lzo initramfs_data.cpio # do not try to update files included in initramfs $(deps_initramfs): ; diff -puN /dev/null usr/initramfs_data.lzo.S --- /dev/null +++ a/usr/initramfs_data.lzo.S @@ -0,0 +1,29 @@ +/* + initramfs_data includes the compressed binary that is the + filesystem used for early user space. + Note: Older versions of "as" (prior to binutils 2.11.90.0.23 + released on 2001-07-14) dit not support .incbin. + If you are forced to use older binutils than that then the + following trick can be applied to create the resulting binary: + + + ld -m elf_i386 --format binary --oformat elf32-i386 -r \ + -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o + ld -m elf_i386 -r -o built-in.o initramfs_data.o + + initramfs_data.scr looks like this: +SECTIONS +{ + .init.ramfs : { *(.data) } +} + + The above example is for i386 - the parameters vary from architectures. + Eventually look up LDFLAGS_BLOB in an older version of the + arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced. + + Using .incbin has the advantage over ld that the correct flags are set + in the ELF header, as required by certain architectures. +*/ + +.section .init.ramfs,"a" +.incbin "usr/initramfs_data.cpio.lzo" _ Patches currently in -mm which might be from albin.tonnerre@xxxxxxxxxxxxxxxxxx are linux-next.patch lib-fix-the-use-of-lzo-to-decompress-initramfs-images.patch initramfs-add-support-for-in-kernel-initramfs-compressed-with-lzo.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html