[U-Boot] MinnowBoard Max uboot

Simon Glass sjg at chromium.org
Thu Mar 12 23:20:05 CET 2015


Hi Thomas,

On 11 March 2015 at 05:06, Beaman, Thomas <Thomas.Beaman at xerox.com> wrote:
> Thank you, can you keep me updated if possible.

OK I'll see if I can copy you on the patches.

Regards,
Simon

>
> Tom
>
> -----Original Message-----
> From: sjg at google.com [mailto:sjg at google.com] On Behalf Of Simon Glass
> Sent: Tuesday, March 10, 2015 1:21 PM
> To: Beaman, Thomas
> Cc: u-boot at lists.denx.de; Bin Meng; gabriel huau
> Subject: Re: MinnowBoard Max uboot
>
> Hi Tom,
>
> On 10 March 2015 at 05:24, Beaman, Thomas <Thomas.Beaman at xerox.com> wrote:
>> Hi Simon,
>>
>> Do you know what will be the timeframe of when someone may be able to
>> look at this in more detail. I will be able to help test any updates
>> if needed
>>
>
> I will take a look once I have things lined up for the next release, likely mid April.
>
> Regards,
> Simon
>
>> Thanks,
>> Tom
>>
>> -----Original Message-----
>> From: sjg at google.com [mailto:sjg at google.com] On Behalf Of Simon Glass
>> Sent: Monday, March 09, 2015 11:49 AM
>> To: Beaman, Thomas
>> Cc: u-boot at lists.denx.de; Bin Meng; gabriel huau
>> Subject: Re: MinnowBoard Max uboot
>>
>> +Bin and Gabriel
>>
>> Hi Tom,
>>
>> On 9 March 2015 at 08:08, Beaman, Thomas <Thomas.Beaman at xerox.com> wrote:
>>>
>>>
>>> Hi Simon,
>>>
>>>
>>>
>>> I see you have put support for the MinnowBoard Max in the u-boot mainline.
>>> Thanks this is a very useful addition.  I have been able to follow
>>> your readme and build a working bare metal uboot. Using the built
>>> uboot I can load and bring up a Linux Kernel.
>>>
>>>
>>>
>>> What I noticed from the running kernel is that only one of the two
>>> cores on the E3825 is running. In the power PC uboots I usually see a
>>> section for the multiple cores in the .dts file. My questions is how
>>> do I get both CPUs running on this board. Is it a uboot .dts file
>>> setup that will enable this, or is something in the kernel start up that does this.
>>>
>>>
>>>
>>> As a test I boot the same kernel using the EFI BIOS on the minnow
>>> board and both CPUs are running.
>>>
>>>
>>>
>>> Any suggestions or comments you have would be welcomed.
>>>
>>>
>>
>> My guess is that the LAPIC CPU start-up is missing. It isn't 100% clear what the FSP does and does not do, but perhaps it does not do that.
>>
>> I did make something of a start on this with ivybridge but it isn't complete, and it seems to be needed here.
>>
>> Regards,
>> Simon


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