Umon command line reached in BBB

Jarielle Catbagan jcatbagan93 at
Wed Jun 17 23:09:19 UTC 2015


I apologize for the misinterpretation/confusion.  My brain was
thinking one thing but I managed to state something else.  What I
actually meant to say was that some commands will not work just yet.
Like the ARP, DHCP, or any of the TFS commands since the ethernet and
flash drivers will have to be implemented first.

I am still analyzing the results that I got, in particular when I
executed the "help" command.  I am going to start looking into why its
hanging, i.e. no help text is outputted.  Just wanted to ask, do you
have any idea why it might be hanging?

On Wed, Jun 17, 2015 at 3:57 PM, Ed Sutter <edsutterjr at> wrote:
> Jarielle,
> Those commands will work as long as you access valid memory.
> Ed
>> Going off of the discussion that I had with Ed in regards to getting a
>> fully internal SRAM mapped Umon image to work before proceeding to
>> implement the DDR3 configuration to have the RAM used by Umon mapped
>> there, I went ahead and started working on it.
>> I configured the Umon image to be fully mapped within the internal
>> SRAM of the AM335x (i.e. BOOTROMBASE/BOOTRAMBASE defined to be within
>> the internal SRAM with their corresponding lengths ensured to not
>> overlap each other and to not exceed the SRAM boundaries), and then
>> enabled INCLUDE_MEMCMDS by setting it to test the DM and PM commands.
>> I know that these commands will not work properly given the fact that
>> DDR3 is not set up yet, but just wanted to see if some command
>> execution is possible.
>> I then proceeded to build the image and then booted the image on the
>> BBB via UART.  Once booted, the Umon command line was presented and
>> did some command execution testing.  Nothing works properly as of
>> right now, but now that I am able to reach the Umon command line I can
>> now proceed to getting the other functions implemented.
>> My results of getting the Umon command line on the BBB can be found in
>> the screen capture provided below.
>> _______________________________________________
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