linux-toradex.git/usr/Makefile, branch v4.11-rc6

kbuild: initramfs cleanup, set target from Kconfig

2017-01-05T17:40:16+00:00

Rather than keep a list of all possible compression types in the
Makefile, set the target explicitly from Kconfig.

Reviewed-by: Francisco Blas Izquierdo Riera (klondike) 
Signed-off-by: Nicholas Piggin 
Signed-off-by: Linus Torvalds

kbuild: initramfs fix dependency checking for compressed target

2017-01-05T17:40:16+00:00

When using initramfs compression, the data file compression suffix
gets quotes pulled in from Kconfig, e.g., initramfs_data.cpio".gz"
which make does not match a target and causes rebuild.

Fix this by filtering out quotes from the Kconfig string.

Fixes: 35e669e1a254 ("initramfs: select builtin initram compression algorithm on KConfig instead of Makefile")
Reviewed-by: Francisco Blas Izquierdo Riera (klondike) 
Signed-off-by: Nicholas Piggin 
Signed-off-by: Linus Torvalds

initramfs: select builtin initram compression algorithm on KConfig instead of Makefile

2016-12-15T00:04:08+00:00

Move the current builtin initram compression algorithm selection from
the Makefile into the INITRAMFS_COMPRESSION variable.  This makes
deciding algorithm precedence easier and would allow for overrides if
new algorithms want to be tested.

Link: http://lkml.kernel.org/r/57EAD769.1090401@klondike.es
Signed-off-by: Francisco Blas Izquierdo Riera (klondike) 
Cc: P J P 
Cc: Paul Bolle 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

initramfs: read CONFIG_RD_ variables for initramfs compression

2013-11-13T03:09:26+00:00

When expert configuration option(CONFIG_EXPERT) is enabled, menuconfig
offers a choice of compression algorithm to compress initial ramfs image;
This choice is stored into CONFIG_RD_* variables.  But usr/Makefile uses
earlier INITRAMFS_COMPRESSION_* macros to build initial ramfs file.  Since
none of them is defined, resulting 'initramfs_data.cpio' file remains
un-compressed.

This patch updates the Makefile to use CONFIG_RD_* variables and adds
support for LZ4 compression algorithm.  Also updates the
'gen_initramfs_list.sh' script to check whether a selected compression
command is accessible or not.  And fall-back to default gzip(1)
compression when it is not.

Signed-off-by: P J P 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

decompressors: add boot-time XZ support

2011-01-13T16:03:25+00:00

This implements the API defined in  which is
used for kernel, initramfs, and initrd decompression.  This patch together
with the first patch is enough for XZ-compressed initramfs and initrd;
XZ-compressed kernel will need arch-specific changes.

The buffering requirements described in decompress_unxz.c are stricter
than with gzip, so the relevant changes should be done to the
arch-specific code when adding support for XZ-compressed kernel.
Similarly, the heap size in arch-specific pre-boot code may need to be
increased (30 KiB is enough).

The XZ decompressor needs memmove(), memeq() (memcmp() == 0), and
memzero() (memset(ptr, 0, size)), which aren't available in all
arch-specific pre-boot environments.  I'm including simple versions in
decompress_unxz.c, but a cleaner solution would naturally be nicer.

Signed-off-by: Lasse Collin 
Cc: "H. Peter Anvin" 
Cc: Alain Knaff 
Cc: Albin Tonnerre 
Cc: Phillip Lougher 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

initramfs: generalize initramfs_data.xxx.S variants

2010-09-29T14:28:59+00:00

Remove initramfs_data.{lzo,lzma,gz,bz2}.S variants and use a common
implementation in initramfs_data.S.  The common implementation expects the
file name of the initramfs to be defined in INITRAMFS_IMAGE.

Change the Makefile to set the INITRAMFS_IMAGE define symbol according
to the selected compression method.

Signed-off-by: Hendrik Brueckner 
Cc: WANG Cong 
Acked-by: Michal Marek 
Acked-by: "H. Peter Anvin" 
Cc: Hendrik Brueckner 
Cc: Heiko Carstens 
Cc: Martin Schwidefsky 
Signed-off-by: Andrew Morton 
Signed-off-by: Michal Marek

initramfs: add support for in-kernel initramfs compressed with LZO

2010-05-27T16:12:54+00:00

Add the necessary parts to be enable the use of LZO-compressed initramfs
build into the kernel.

Signed-off-by: Albin Tonnerre 
Cc: "H. Peter Anvin" 
Cc: Michal Marek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kbuild: correct initramfs compression comment

2009-09-20T10:27:41+00:00

Fix the Makefile comment since bzip2 is now supported.

Signed-off-by: Robert P. J. Day 
Signed-off-by: Sam Ravnborg

bzip2/lzma: quiet Kconfig warning for INITRAMFS_COMPRESSION_NONE

2009-04-01T06:51:56+00:00

Impact: quiet Kconfig warning

It appears that Kconfig simply has no way to provide defaults for
entries that exist inside a conditionalized choice block.
Fortunately, it turns out we don't actually ever use
CONFIG_INITRAMFS_COMPRESSION_NONE, so we can just drop it for
everything outside the choice block.

Signed-off-by: H. Peter Anvin

bzip2/lzma: make internal initramfs compression configurable

2009-02-19T21:43:51+00:00

Impact: Avoids silent environment dependency

Make builtin initramfs compression an explicit configurable.  The
previous version would pick a compression based on the binaries which
were installed on the system, which could lead to unexpected results.
It is now explicitly configured, and not having the appropriate
binaries installed on the build host is simply an error.

Signed-off-by: Alain Knaff 
Signed-off-by: H. Peter Anvin