[U-Boot] Newbie SPL question for socfpga_sockit

[Phil Reid <preid@electromag.com.au>]

On 6/04/2016 6:03 AM, Marek Vasut wrote:
> On 04/05/2016 10:33 AM, Phil Reid wrote:
>> On 27/03/2016 4:52 AM, Marek Vasut wrote:
>>> On 03/22/2016 06:06 PM, Dinh Nguyen wrote:
>>>>
>>>>
>>>> On 03/20/2016 11:42 AM, Marek Vasut wrote:
>>>>>>
>>>>>> Sorry, I know that doesn't help. So let's walk through my workflow.
>>>>>> I am
>>>>>> not using any Altera tools when I build.
>>>>>>
>>>>>> $make socfpga_de0_nano_soc_defconfig
>>>>>> $make u-boot-with-spl.sfp
>>>>>> $dd if=u-boot-with-spl.sfp of=/dev/sdb3
>>>>>>
>>>>>> My gcc is: arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.7.3-12ubuntu1) 4.7.3
>>>>>>
>>>>>> Has the board ever worked for you at all? Can you try this image:
>>>>>>
>>>>>> https://rocketboards.org/foswiki/view/Documentation/AtlasSoCSdCardImage
>>>>>>
>>>>>>
>>>>>> Dinh
>>>>>
>>>>> I just ported U-Boot to another customer board. I noticed QSPI has
>>>>> problems and USB can be flaky. That's the standard cache issue we
>>>>> have, disabling dcache fixed that.
>>>>>
>>>>> I am starting to wonder whether we're hitting some corner case here.
>>>>> Maybe we should eventually try and trace all the register reads and
>>>>> writes generated by the DDR calibration code both in old and new SPL
>>>>> and make a diff to see if something really did change.
>>>>>
>>>>> Dinh, can you share the marking on the SoC and the DRAMs on your board?
>>>>>
>>>>
>>>> My SoC is:
>>>>
>>>> 5CSEMA4U23C6N
>>>> CACAU1525A
>>>>
>>>> DRAMs are:
>>>>
>>>> ISSI 1510
>>>> IS43TR16256A
>>>> 15HBL K080
>>>> P4482100QER2 TWN
>>>
>>> Thanks, that's indeed rev. C . About time I bang my head against the
>>> desk because this is creepy.
>>>
>>>
>> FYI
>>
>> I've just spend some time trying to update the spl / uboot / kernel &
>> rootfs image on our
>> Altera socdk to use for some software testing / development.
>> Unfortunately it fails in the mem calibration process with the latest
>> uboot most of the time.
>> And when it does boot somtimes fails loading uboot fomr the mmc.
>
> Try this u-boot-socfpga/ddr branch [1] , see if it works for you.
>
> [1]
> http://git.denx.de/?p=u-boot/u-boot-socfpga.git;a=shortlog;h=refs/heads/ddr
>

Spent a bit of time on it and things are very weird. So far no luck booting with the ddr branch.
I got the memory calibration to pass but then had problems with loading uboot. Using the mmc.
Say no device found for the mmc. error -19.

When I try to add some extra debug in things fall over.
Sometimes just hangs in the Memory cal (and not changing anything there).
Then sometimes I get missing DTB.
I found the uboot-with-spl.sfp file generated by the latest uboot tree and tried burning that with
same results.

Reverted back to the image available on rocketboards and wrote that to the card.
Thinking something strange with the card (thou I tried several) and that works fine.
Sourced from
https://rocketboards.org/foswiki/view/Documentation/AlteraSoCDevelopmentBoard

I've not had any success with the ARM dstream connection to do bare metal debugging to this board.
It finds the cpu but has trouble downloading the image.
Again this all works fine with our hardware.

Not sure were to go from here. I may not have time to probe any further as our hardware appears to work.


-- 
Regards
Phil Reid