[meta-xilinx] [U-BOOT PATCH] zynq_common: Add uEnv.txt boot environment load support

[Michal Simek]

On 09/03/2013 09:43 PM, Philip Balister wrote:
> On 09/02/2013 03:40 AM, Michal Simek wrote:
>> Hi,
>>
>> On 08/30/2013 08:13 AM, Nathan Rossi wrote:
>>> Add support for using a uEnv.txt file for loading and or modifying the
>>> existing boot environment during a Zynq "sdboot". If the environment
>>> fails to load during the "sdboot" continue booting from SD normally.
>>>
>>> This uEnv.txt and bootenv/uenv default environment variables are based
>>> on the implementation used in omap3_beagle.h.
>>>
>>> Signed-off-by: Nathan Rossi <nathan.rossi at xilinx.com>
>>> ---
>>> Hi All,
>>>
>>> This is a feature that has been requested by some users of the meta-xilinx
>>> layer. It is the additional of an optional 'uEnv.txt' boot environment file
>>> which allows the modification of the SD boot. It is very useful for development
>>> purposes and also in production environments. (There are also some specific
>>> development boards that would greatly benefit from this, specifcally the
>>> Parallella board which cannot directly boot from SD card due to its use of SD_1
>>> instead of SD_0, this would make boot environment modifications significantly
>>> easier)
>>>
>>> Philip has done an initial implementation of this feature see:
>>> https://github.com/balister/meta-xilinx/commit/8b66cb1edb65c34c332888e907aec4333422af6b#L1R1
>>>
>>> However I would like to see this accepted into the u-boot-xlnx for the next
>>> release. So I have reworked Philip's initial implementation (based on some
>>> comments from Michal).
>>>
>>> When this is accepted into the master-next branch of u-boot-xlnx I will backport
>>> it for use in the Yocto meta-xilinx layer.
>>>
>>> Regards,
>>> Nathan
>>> ---
>>>  include/configs/zynq_common.h |   28 ++++++++++++++++++++++------
>>>  1 file changed, 22 insertions(+), 6 deletions(-)
>>
>> Applied to the master-next.
> 
> I built u-boot-2013.07 + this patch and it failed to ru the commands
> from the uEnv.txt file until I increased the value of SYS_MAXARGS.
> 

Nathan: Have you tested that patch?

Thanks,
Michal