From: James Chargin <jimccrown@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Variable content dump to memory
Date: Thu, 24 Mar 2016 10:51:21 -0700 [thread overview]
Message-ID: <56F42919.1060302@gmail.com> (raw)
In-Reply-To: <CAH=tA9E_TH9QbesdOwfY1JAOYAN6_3mZbF_Z_rX30EfMe2260w@mail.gmail.com>
On 03/24/2016 03:30 AM, Nicolae Rosia wrote:
> Hello,
>
> I'm trying to write the contents of a variable to a file using ext4write
> but it requires a memory address as input.
> Is there an easy way to get the contents of a variable to a particular mem
> address?
You weren't completely specific about your needs, but assuming you are
wanting to write a U-Boot environment variable to memory, try something like
=> # set up a test value
=> setenv var 12345678
=> printenv var
var=12345678
=>
=> # do the actual write
=> mw.l 80020000 $var 1
=>
=> # observe memory was set
=> md.l 8001fff0 c
8001fff0: 67ffedc4 dbc98df5 8e71cdd4 628fcacd ...g......q....b
80020000: 12345678 a2fe8db5 df34c767 636dbd37 xV4.....g.4.7.mc
80020010: 375dfdcb fde86ca2 3f273cdf 1fe951f9 ..]7.l...<'?.Q..
Also, "help mw".
This was done on something similar to beaglebone x15. You will need to
use memory addresses that are valid for your target system.
Jim
>
> Best regards,
> Nicolae
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>
--
Jim Chargin
AJA Video Systems jimc at aja.com
(530) 271-3334 http://www.aja.com
next prev parent reply other threads:[~2016-03-24 17:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-24 10:30 [U-Boot] Variable content dump to memory Nicolae Rosia
2016-03-24 17:51 ` James Chargin [this message]
2016-03-25 9:12 ` Nicolae Rosia
2016-03-25 15:14 ` James Chargin
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