[U-Boot] [PATCH] wandboard: add pxe support, set default boot command like highbank

[Tom Rini]

On Fri, Aug 02, 2013 at 11:14:22AM +0200, Stefano Babic wrote:
> Hi Rob, Dennis,
> 
> On 01/08/2013 19:19, Rob Herring wrote:
> > You both are missing the point. This patch doesn't address the problem,
> > but does highlight it.
> 
> I am aware of it - I have already pointed out that we get many patches
> that have increased the default environment to something hard to
> maintain. This patch makes it more obvious.
> 
> > The distros want to get out of having to know the
> > u-boot environment details for every single board and need some level of
> > standardization across platforms. The distros should only have to
> > specify "boot the kernel at path/name X on device Y." They should not
> > need to know what address to load the kernel to, but only that
> > $kernel_addr_r is already setup. Variables are the first step. The
> > second step is standardizing the boot commands.
> 
> I understand the point - but is the way to hard code together with
> u-boot the right way ? Do we have some other possibilities to do this ?
> 
> Maybe can be mkenvimage a solution (tools/mkenvimage) ? It creates an
> environment image from a simple ASCII text. The resulting image could be
> concatenated together with u-boot and in CONFIG_EXTRA_ENV_SETTINGS we
> could have for all boards a way to load it. Only a first idea, but as we
> recognize the issue, any idea to solve it ?

Distros generally hate the thought of having the user update U-Boot.
Part of why I asked Dennis to post his patches here is that we need to
start the conversation at least, and come up with a way that boards are
likely to ship out of the box in a way that can be worked from,
consistently at least across different vendor same arch SoCs.  This
would require some opt-in per board, certainly.

-- 
Tom
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