[U-Boot] u-boot for Snow problem

[Simon Glass]

Hi Michal,

On 2 March 2015 at 04:25, Michal Suchanek <hramrach at gmail.com> wrote:
> Hello,
>
> On 18 February 2015 at 06:24, Michal Suchanek <hramrach at gmail.com> wrote:
>> On 18 February 2015 at 03:27, Simon Glass <sjg at chromium.org> wrote:
>>> Hi Michal,
>>>
>>> On 16 February 2015 at 04:41, Michal Suchanek <hramrach at gmail.com> wrote:
>>>> On 13 February 2015 at 05:51, Simon Glass <sjg at chromium.org> wrote:
>>>>> Hi Michal,
>>>>>
>>>>> On 11 February 2015 at 10:16, Michal Suchanek <hramrach at gmail.com> wrote:
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> I changed the SYS_START to work around the bug in the manufacturer
>>>>>> firmware, applied snow_defconfig, built u-boot.bin, packed it into
>>>>>> kernel uimage, signed it, copied it to a kernel partition, bumped
>>>>>> priority of the partition, and rebooted.
>>>>>>
>>>>>
>>>>> Do you mean u-boot-dtb.bin? If not you won't get a device tree and it
>>>>> won't work.
>>>>
>>>> No, u-boot.bin. With u-boot-dtb.bin I get a snow # prompt on the
>>>> built-in LCD, and working keyboard.
>>>
>>> OK sounds like it is working, good! I wonder if we should have a page
>>> on elinux.org?
>
> It is working to some extent.
>
> I managed to load kernel from the emmc which works fine but the kernel
> cannot read the emmc after it boots because it does not properly parse
> the partitioning scheme. This should be trivially fixable in the
> kernel and might actually work if I updated my sources but rebasing
> the extra patches required for Snow is not automatically handled.
>
> On the other hand, the linux kernel has no problem with the SDXC card
> in the SD slot and can read it just fine. Unfortunately, u-boot
> complains about EFI partition errors and won't load anything from the
> card. I tried two different GPT partitioning tools on the card and
> both say that the partition layout is fine and that I have the default
> 128 entries.
>
> How can I tell why u-boot does not like my GPT label?

You could debug it in U-Boot and see what is going wrong.

Regards,
Simon