Eric Lee / linux-smarc-t335x-v3.2

14 Jan, 2011

1 commit

  • 3ebe12439   decompressors: add boot-time XZ support ... Browse Code »

    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

    Lasse Collin
     

29 Sep, 2010

1 commit

  • 6ae64e428   initramfs: generalize initramfs_data.xxx.S variants ... Browse Code »

    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

    Hendrik Brueckner
     

28 May, 2010

1 commit

20 Sep, 2009

1 commit

01 Apr, 2009

1 commit

20 Feb, 2009

1 commit

  • ab76f3d77   bzip2/lzma: make internal initramfs compression configurable ... Browse Code »

    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

    Alain Knaff
     

07 Jan, 2009

1 commit

  • a26ee60f9   bzip2/lzma: fix built-in initramfs vs CONFIG_RD_GZIP ... Browse Code »

    Impact: Resolves build failures in some configurations

    Makes it possible to disable CONFIG_RD_GZIP . In that case, the
    built-in initramfs will be compressed by whatever compressor is
    available (bzip2 or lzma) or left uncompressed if none is available.

    It also removes a couple of warnings which occur when no ramdisk
    compression at all is chosen.

    It also restores the select ZLIB_INFLATE in drivers/block/Kconfig
    which somehow came missing. This is needed to activate compilation of
    the stuff in zlib_deflate.

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

    Alain Knaff
     

12 Feb, 2007

1 commit

  • c33df4eaa   [PATCH] disable init/initramfs.c ... Browse Code »

    The file init/initramfs.c is always compiled and linked in the kernel
    vmlinux even when BLK_DEV_RAM and BLK_DEV_INITRD are disabled and the
    system isn't using any form of an initramfs or initrd. In this situation
    the code is only used to unpack a (static) default initial rootfilesystem.
    The current init/initramfs.c code. usr/initramfs_data.o compiles to a size
    of ~15 kbytes. Disabling BLK_DEV_RAM and BLK_DEV_INTRD shrinks the kernel
    code size with ~60 Kbytes.

    This patch avoids compiling in the code and data for initramfs support if
    CONFIG_BLK_DEV_INITRD is not defined. Instead of the initramfs code and
    data it uses a small routine in init/noinitramfs.c to setup an initial
    static default environment for mounting a rootfilesystem later on in the
    kernel initialisation process. The new code is: 164 bytes of size.

    The patch is separated in two parts:
    1) doesn't compile initramfs code when CONFIG_BLK_DEV_INITRD is not set
    2) changing all plaforms vmlinux.lds.S files to not reserve an area of
    PAGE_SIZE when CONFIG_BLK_DEV_INITRD is not set.

    [deweerdt@free.fr: warning fix]
    Signed-off-by: Jean-Paul Saman
    Cc: Al Viro
    Cc:
    Signed-off-by: Frederik Deweerdt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jean-Paul Saman