[U-Boot] Tegra board problems

[Simon Glass]

Hi Stephen,

On 25 November 2014 at 09:11, Stephen Warren <swarren at wwwdotorg.org> wrote:
> On 11/24/2014 09:03 PM, Simon Glass wrote:
>>
>> Hi,
>>
>> I'm a bit messed up with my testing now.
>
> ...
>>
>> 2. beaver: I cannot get mainline U-Boot to boot a kernel. In fact
>> 'part list mmc 0' just prints an error:
>>
>> ## Unknown partition table
>>
>> It is getting a partition ID of 0. Is there something wrong with
>> Beaver's mmc support in mainline?
>
>
> I just built commit 2a82ec77d27e "Prepare v2015.01-rc2" and both eMMC and SD
> appear to work.
>
> Do you have a valid partition table on the eMMC? If you installed L4T there
> rather than partitioning it yourself, note that L4T uses a non-standard
> "tegra PT" partition table format. Some newer versions of L4T also include a
> backup GPT that makes some of the partitions available in a more standard
> way, but IIUC there's never a primary GPT. I don't recall if the version of
> L4T for Beaver was new enough to do even that though. Your best bet is to
> use standard tools to install a complete GPT and then install a Linux distro
> on top of that.
>
> Tegra30 (Beaver) # part list mmc 0
>
> Partition Map for MMC device 0  --   Partition Type: EFI
>
> Part    Start LBA       End LBA         Name
>         Attributes
>         Type GUID
>         Partition GUID
>   1     0x00000800      0x01da97ff      ""
>         attrs:  0x0000000000000000
>         type:   ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
>         guid:   ac3c736e-a29b-43d4-9819-4cf4fd84c3b0
>
> Tegra30 (Beaver) # part list mmc 1
>
> Partition Map for MMC device 1  --   Partition Type: EFI
>
> Part    Start LBA       End LBA         Name
>         Attributes
>         Type GUID
>         Partition GUID
>   1     0x00000022      0x003b9132      ""
>         attrs:  0x0000000000000000
>         type:   ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
>         guid:   b2f82cda-2535-4779-b467-094a210fbae7
>

OK thank you, that could be my problem. I'll try installing a new GPT.

Will try out the Jetson and see if I can get it running again. So does
that mean as shipped it runs an Android boot loader and then jumps to
U-Boot?

Regards,
Simon