[U-Boot-Users] Reading mediacard compressed files

[Jerry Van Baren]

Junior wrote:
>> -----Original Message-----
>> From: joravec at drewtech.com
>> Sent: Fri, 13 Jul 2007 11:10:14 -0400
>> To: u-boot-users at lists.sourceforge.net
>> Subject: Re: [U-Boot-Users] Reading mediacard compressed files
>>
>> "Junior" <ejr at inbox.com> wrote in message
>> news:331ACB2C846.00000166ejr at inbox.com...
>>> Hi All,
>>> I have a media card that has one fat partition with a testfile.gzip
>>> (unrelated to the kernel).
>>> I would like to read this file and uncompress it to SD memory.
>>> Can this be done and if so, how do I achieve this?
>>> I've enabled FAT support but fatinfo requires "dev[:part]" and I'm not
>>> sure what to
>>> specify as my device and partition.
>> Typically "fatinfo mmc 0". The command is of the format "fatinfo
> 
> 
> Thanks, That did it:
>                  Partition 1: Filesystem: FAT32 "NO NAME    "
> 
> But how do I read from this partition then do an uncompress?

Hi Junior,

Your original message says "uncompress it to SD memory."  If you are 
expecting to write the resulting data back to your media card (my 
interpretation of "SD memory"), I don't think you can get there without 
a lot of work.

IIRC, the file systems supported by u-boot are read-only.  The 
expectation is that, if you want to write to a file system, you should 
us an operating system, not a boot loader.

gvb