On Thu, Jun 30, 2011 at 12:06 AM, Paul Sokolovsky
<paul.sokolov...@linaro.org> wrote:
> On Wed, 29 Jun 2011 21:33:18 +0100
> Andy Green <andy.gr...@linaro.org> wrote:
>
>> On 06/29/2011 07:58 PM, Somebody in the thread at some point said:
>>
>> Hi -
>>
>> > Month ago, during 11.05 release testing, we had a case when
>> > Pandaboard didn't boot with one particular build and one particular
>> > card, while worked well with with other combinations.
>> >
>> > During this test cycle, I hit similar conditions, which I however
>> > was able to trace to the following: if at the moment of reset/boot,
>> > there's a cable connected from Panda USB OTG (small) connector to
>> > host, it won't boot from SD. The D2 LED will light for about a
>> > second, then both will be off. Nothing is output on serial. As soon
>> > as you unplug cable from the host, all boots again.
>> >
>> > I'm not sure if this is a known condition, but guessed I'd share it.
>>
>> How old's your x-loader / MLO?
>
> I'm testing Linaro Android 11.06 releases:
> http://releases.linaro.org/platform/linaro-n/android/11.06/
>
> I get:
>
> Texas Instruments X-Loader 1.4.4ss (Mar 18 2011 - 14:14:59)
>
> Btw I don't yet fully understand Panda boot architecture. This X-Loader
> appear to come from SD card. But what boots it then? How that piece is
> called, where it comes from, how it should be upgraded, and is that
> ever needed? I found this:
> https://gforge.ti.com/gf/project/omapzoom/wiki/?pagename=BootingAndFlashing
> but it's still a bit confusing (like, doesn't name that first loader,
> and from OS perspective, it appears to be 3-stage boot).
>
>>
>> I wrote a patch 97bb3ce0ca014aff9ad9f35f2b78f3976bf276f6 to solve
>> this back in February, it's in Gitorious x-loader repo
>>
>> http://gitorious.org/x-loader/x-loader/commit/97bb3ce0ca014aff9ad9f35f2b78f3976bf276f6
>>
>> If you try an updated x-loader with that in, if the mUSB port is
>> powered it'll just pause 2sec on start then start as normal from SD
>> card.
>
> Android builds use:
>
> <project name="x-loader" path="device/linaro/x-loader"
> remote="omapzoom" revision="eb8b047c29a2027fbdd841cd1289fa27ddb22d72"/>

due to build system issues we don't build xloader from source atm.

Patrik added a blueprint "build MLO from source" to the backlog before
he left to vacation:
 -  
https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-mlo-from-source

With some luck we might tackle it for this cycle (or august since
patrik is on summar vacation this month).


-- 

 - Alexander

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