Tegra 2

Tegra 2

[Erwin Rol]

Hey all,

If I remember right a while back someone mentioned Tegra 2 here. I would 
like to ask what the status is of Tegra 2 support. Or if there is 
support at all ? :-)

- Erwin

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Re: Tegra 2

[Sascha Hauer]

Hi Erwin,

On Fri, Oct 28, 2011 at 10:36:36AM +0200, Erwin Rol wrote:
> Hey all,
> 
> If I remember right a while back someone mentioned Tegra 2 here. I
> would like to ask what the status is of Tegra 2 support. Or if there
> is support at all ? :-)

Antony said he would eventually work on that. Added him to Cc.

Sascha

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Re: Tegra 2

[Antony Pavlov]

On 28 October 2011 12:36, Erwin Rol <mailinglists@erwinrol.com> wrote:
> Hey all,
>
> If I remember right a while back someone mentioned Tegra 2 here. I would
> like to ask what the status is of Tegra 2 support. Or if there is support at
> all ? :-)

There is initial support for Tegra 2 in my private git.

I shall send the patches in a while.

The current status:
 * barebox can start on Toshiba AC100 smartbook after U-Boot (not
mainstream U-Boot);
 * barebox support console on Tegra's internal serial port;
 * barebox support USB host controller and Ethernet-USB

Barebox does not support:
 * cache&mmu initialization;
 * graphical output;
 * i2c (so barebox can't use AC100's keyboard for input);
 * mmc controller.

Currently, I'm working on porting of tegra-fb and i2c support.

-- 
Best regards,
  Antony Pavlov

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Re: Tegra 2

[Erwin Rol]

Hey Antony,

On 28-10-2011 15:15, Antony Pavlov wrote:
> On 28 October 2011 12:36, Erwin Rol<mailinglists@erwinrol.com>  wrote:
>> Hey all,
>>
>> If I remember right a while back someone mentioned Tegra 2 here. I would
>> like to ask what the status is of Tegra 2 support. Or if there is support at
>> all ? :-)
>
> There is initial support for Tegra 2 in my private git.
>
> I shall send the patches in a while.
>
> The current status:
>   * barebox can start on Toshiba AC100 smartbook after U-Boot (not
> mainstream U-Boot);

Is this because of the tegra 2 CPU or because of the AC100 ? I am 
looking into the Tegra 2 board from MSC (true embedded board)

>   * barebox support console on Tegra's internal serial port;
>   * barebox support USB host controller and Ethernet-USB
> Barebox does not support:
>   * cache&mmu initialization;
>   * graphical output;
>   * i2c (so barebox can't use AC100's keyboard for input);
>   * mmc controller.
>
> Currently, I'm working on porting of tegra-fb and i2c support.

I should get my board somewhere next week (I hope), and will start to 
take a deeper look into things.

Most important thing will be, does it boot Linux and how fast does it do 
that.

- Erwin

PS: do you have any general links of info on the Tegra 2 cpu ?






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Re: Tegra 2

[Antony Pavlov]

>> There is initial support for Tegra 2 in my private git.
>>
>> I shall send the patches in a while.
>>
>> The current status:
>>  * barebox can start on Toshiba AC100 smartbook after U-Boot (not
>> mainstream U-Boot);
>
> Is this because of the tegra 2 CPU or because of the AC100 ? I am looking
> into the Tegra 2 board from MSC (true embedded board)

There are the reasons:
 * current Tegra support lacks low-level hardware initialization
(neither Tegra 2 nor AC100);
 * I have no mean to easily recover wrongly burned boot flash memory
on AC100, so I am in no hurry to burn barebox into AC100 :))

> I should get my board somewhere next week (I hope), and will start to take a
> deeper look into things.
>
> Most important thing will be, does it boot Linux and how fast does it do
> that.

You mean does AC100 boot linux or does barebox boot linux?

> - Erwin
>
> PS: do you have any general links of info on the Tegra 2 cpu ?

No, I have no links of info, but I have many links of code :)))
Most of them are AC100 related:

   https://github.com/chpec/uboot-ac100.git
   https://github.com/muromec/uboot-tegra.git
   http://ac100.grandou.net/
   https://wiki.edubuntu.org/ARM/AC100
   git://gitorious.org/~marvin24/ac100/marvin24s-kernel.git

-- 
Best regards,
  Antony Pavlov

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