1. 07 5月, 2007 2 次提交
  2. 02 5月, 2007 1 次提交
  3. 30 4月, 2007 1 次提交
  4. 27 4月, 2007 2 次提交
  5. 24 4月, 2007 2 次提交
  6. 13 4月, 2007 3 次提交
  7. 26 3月, 2007 3 次提交
  8. 21 3月, 2007 1 次提交
  9. 13 3月, 2007 2 次提交
    • D
      [POWERPC] zImage: Cleanup and improve zImage entry point · cd197ffc
      David Gibson 提交于
      This patch re-organises the way the zImage wrapper code is entered, to
      allow more flexibility on platforms with unusual entry conditions.
      After this patch, a platform .o file has two options:
      
      1) It can define a _zimage_start, in which case the platform code gets
         control from the very beginning of execution.  In this case the
         platform code is responsible for relocating the zImage if necessary,
         clearing the BSS, performing any platform specific initialization, and
         finally calling start() to load and enter the kernel.
      
      2) It can define platform_init().  In this case the generic crt0.S
         handles initial entry, and calls platform_init() before calling
         start().  The signature of platform_init() is changed, however, to
         take up to 5 parameters (in r3..r7) as they come from the platform's
         initial loader, instead of a fixed set of parameters based on OF's
         usage.
      
         When using the generic crt0.S, the platform .o can optionally
         supply a custom stack to use, using the BSS_STACK() macro.  If this
         is not supplied, the crt0.S will assume that the loader has
         supplied a usable stack.
      
      In either case, the platform code communicates information to the
      generic code (specifically, a PROM pointer for OF systems, and/or an
      initrd image address supplied by the bootloader) via a global
      structure "loader_info".
      
      In addition the wrapper script is rearranged to ensure that the
      platform .o is always linked first.  This means that platforms where
      the zImage entry point is at a fixed address or offset, rather than
      being encoded in the binary header can be supported using option (1).
      Signed-off-by: NDavid Gibson <dwg@au1.ibm.com>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      cd197ffc
    • D
      [POWERPC] zImage: Add more flexible gunzip convenience functions · ad9d2716
      David Gibson 提交于
      At present, arch/powerpc/boot/main.c includes a gunzip() function
      which is a convenient wrapper around zlib.  However, it doesn't
      conveniently allow decompressing part of an image to one location,
      then the remainder to a different address.
      
      This patch adds a new set of more flexible convenience wrappers around
      zlib, moving them to their own file, gunzip_util.c, in the process.
      These wrappers allow decompressing sections of the compressed image to
      different locations.  In addition, they transparently handle
      uncompressed data, avoiding special case code to handle uncompressed
      vmlinux images.
      
      The patch also converts main.c to use the new wrappers, using the new
      flexibility to avoid decompressing the vmlinux's ELF header twice as
      we did previously.  That in turn means we avoid extending our
      allocations for the vmlinux to allow space for the extra copy of the
      ELF header.
      Signed-off-by: NDavid Gibson <dwg@au1.ibm.com>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      ad9d2716
  10. 07 2月, 2007 1 次提交
  11. 20 12月, 2006 1 次提交
  12. 05 12月, 2006 1 次提交
  13. 04 12月, 2006 3 次提交
  14. 13 11月, 2006 1 次提交
  15. 25 10月, 2006 1 次提交
  16. 24 10月, 2006 1 次提交
  17. 23 10月, 2006 4 次提交
  18. 10 10月, 2006 2 次提交
  19. 04 10月, 2006 1 次提交
  20. 28 9月, 2006 1 次提交
    • P
      [POWERPC] Create a "wrapper" script and use it in arch/powerpc/boot · 2bf11819
      Paul Mackerras 提交于
      This puts the knowledge of how to create various sorts of zImage
      wrappers into a script called "wrapper" that could be used outside of
      the kernel tree.  This changes arch/powerpc/boot so it first builds
      the files that the wrapper script needs, then runs it to create
      whatever flavours of zImage are required.
      
      This version does uImages as well.  The zImage names are changed
      slightly; zImage.pseries is the one with the PT_NOTE program header
      entry added, and zImage.pmac is the one without.  If the
      zImage.pseries gets made, it will also get hardlinked to zImage;
      otherwise, if zImage.pmac is made, it gets hardlinked to zImage.
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      2bf11819
  21. 20 9月, 2006 1 次提交
  22. 07 7月, 2006 1 次提交
  23. 23 6月, 2006 1 次提交
    • R
      [PATCH] zlib_inflate: Upgrade library code to a recent version · 4f3865fb
      Richard Purdie 提交于
      Upgrade the zlib_inflate implementation in the kernel from a patched
      version 1.1.3/4 to a patched 1.2.3.
      
      The code in the kernel is about seven years old and I noticed that the
      external zlib library's inflate performance was significantly faster (~50%)
      than the code in the kernel on ARM (and faster again on x86_32).
      
      For comparison the newer deflate code is 20% slower on ARM and 50% slower
      on x86_32 but gives an approx 1% compression ratio improvement.  I don't
      consider this to be an improvement for kernel use so have no plans to
      change the zlib_deflate code.
      
      Various changes have been made to the zlib code in the kernel, the most
      significant being the extra functions/flush option used by ppp_deflate.
      This update reimplements the features PPP needs to ensure it continues to
      work.
      
      This code has been tested on ARM under both JFFS2 (with zlib compression
      enabled) and ppp_deflate and on x86_32.  JFFS2 sees an approx.  10% real
      world file read speed improvement.
      
      This patch also removes ZLIB_VERSION as it no longer has a correct value.
      We don't need version checks anyway as the kernel's module handling will
      take care of that for us.  This removal is also more in keeping with the
      zlib author's wishes (http://www.zlib.net/zlib_faq.html#faq24) and I've
      added something to the zlib.h header to note its a modified version.
      Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
      Acked-by: NJoern Engel <joern@wh.fh-wedel.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      4f3865fb
  24. 15 1月, 2006 1 次提交
  25. 14 1月, 2006 1 次提交
  26. 11 1月, 2006 1 次提交