[U-Boot] [PATCH 0/6] add zip command support for uboot

[Lukasz Majewski <l.majewski@samsung.com>]

Dear Marek and Lei,

> Dear Lei Wen,
> 
> > Hi Marek,
> > 
> > On Thu, Sep 6, 2012 at 12:18 PM, Marek Vasut
> > <marek.vasut@gmail.com> wrote:
> > > Dear adrian.wenl at gmail.com,
> > > 
> > >> From: Lei Wen <leiwen@marvell.com>
> > > 
> > > Lei? Long time no see :)
> > 
> > Long time no see. :)
> 
> Yep, you're doing well?
> 
> > >> This patch set add zip command support for uboot.
> > >> The first two patches import deflate and trees functions from
> > >> zlib 1.2.5 without any change. While the third patch did the
> > >> necessary change to make the import file could be built passed
> > >> in uboot environment.
> > >> 
> > >> The fourth patch make us could zip the memory from 0 in the
> > >> address space.
> > >> 
> > >> The latter fifth and sixth patch does the adding gzip lib
> > >> function exporting and zip command support.
> > >> 
> > >> Patch set test with zip&unzip and compared with original memory
> > >> content.
> > >> 
> > >> Lei Wen (6):
> > >>   lib: zlib: import deflate source file from 1.2.5
> > >>   lib: zlib: import trees file from 1.2.5
> > >>   lib: zlib: include deflate into zlib build
> > >>   lib: zlib: remove the limitation for cannot using 0 as start
> > >>   lib: add gzip lib function callback
> > >>   common: add zip command support
> > >>  
> > >>  common/Makefile       |    1 +
> > >>  common/cmd_zip.c      |   60 ++
> > >>  include/common.h      |    7 +
> > >>  include/u-boot/zlib.h |   40 +-
> > >>  lib/Makefile          |    1 +
> > >>  lib/gzip.c            |  143 ++++
> > >>  lib/zlib/deflate.c    | 1831
> > >> 
> > >> +++++++++++++++++++++++++++++++++++++++++++++++++
> > >> lib/zlib/deflate.h | 342 +++++++++
> > >> 
> > >>  lib/zlib/trees.c      | 1244 +++++++++++++++++++++++++++++++++
> > >>  lib/zlib/trees.h      |  128 ++++
> > >>  lib/zlib/zlib.c       |    8 +
> > >>  lib/zlib/zutil.h      |    4 +
> > >>  12 files changed, 3804 insertions(+), 5 deletions(-)
> > >>  create mode 100644 common/cmd_zip.c
> > >>  create mode 100644 lib/gzip.c
> > >>  create mode 100644 lib/zlib/deflate.c
> > >>  create mode 100644 lib/zlib/deflate.h
> > >>  create mode 100644 lib/zlib/trees.c
> > >>  create mode 100644 lib/zlib/trees.h
> > > 
> > > Are there any users for this code? What is it for ?
> > 
> > This patch was intended to compress the memory when uploading
> > through USB. So that uploaded image could be smaller.
> > Maybe there are some other usage, like memory testing?
> 
> CCing Lukasz, maybe he can find some use for this in the DFU series?
> 

I think, that there is a possibility to gzip the host DFU data and
uncompress it after USB transmission (especially when "zip" command is
available from command line).

> > > Best regards,
> > > Marek Vasut
> > 
> > Thanks,
> > Lei
> 
> Best regards,
> Marek Vasut


-- 
Best regards,

Lukasz Majewski

Samsung Poland R&D Center | Linux Platform Group