From: Robert P. J. Day <rpjday@crashcourse.ca>
To: u-boot@lists.denx.de
Subject: [U-Boot] recommended place to add some custom settings to u-boot environment?
Date: Wed, 14 Sep 2016 05:27:33 -0400 (EDT) [thread overview]
Message-ID: <alpine.LFD.2.20.1609140524480.27791@localhost.localdomain> (raw)
In-Reply-To: <20160914091718.73124100BD9@atlas.denx.de>
On Wed, 14 Sep 2016, Wolfgang Denk wrote:
> Dear Robert,
>
> In message <alpine.LFD.2.20.1609140451540.23455@localhost.localdomain> you wrote:
> >
> > on my target board, there is some non-linux environment info in
> > "var=val" form that i want to drag into the current environment
> > whenever u-boot starts up. my plan is just to import that content
> > into a (new) hash table, then tweak it a bit before further adding
> > it to "env_htab". the logistics seem pretty straightforward, i'm
> > just curious as to where the *right*(?) place is to do this.
>
> Sounds complicated...
>
> > does that make sense? at that point, all of the normal
> > environment will have been initialized, and i'll have access to
> > "env_htab". thoughts? is there a better place to "adjust" the
> > u-boot environment once u-boot has done its normal work? thanks.
>
> Why not simply putting this as text (or wrapped with an uImage
> header) into some storage (or even a file) and then use "env import"
> to load it?
the problem is that that additional "environment" info is on the
target board because of a legacy non-linux OS -- it's at a well-known
address in flash, and we have no freedom to change it, we can only
read it, make some adjustments, then incorporate it into the current
environment.
rday
--
========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
========================================================================
next prev parent reply other threads:[~2016-09-14 9:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-14 8:57 [U-Boot] recommended place to add some custom settings to u-boot environment? Robert P. J. Day
2016-09-14 9:17 ` Wolfgang Denk
2016-09-14 9:27 ` Robert P. J. Day [this message]
2016-09-14 12:58 ` Wolfgang Denk
2016-09-14 13:04 ` Robert P. J. Day
2016-09-14 13:33 ` Wolfgang Denk
2016-09-14 13:37 ` Robert P. J. Day
2016-09-14 14:31 ` Wolfgang Denk
2016-09-14 15:07 ` Robert P. J. Day
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