[Macchiato] SD problems

[Ard Biesheuvel]

> On 14 Jun 2017, at 21:49, Marcin Wojtas <mw at semihalf.com> wrote:
> 
> 
> 
> 2017-06-14 20:19 GMT+02:00 Ard Biesheuvel <ard.biesheuvel at linaro.org>:
>> On 14 June 2017 at 20:09, Marcin Wojtas <mw at semihalf.com> wrote:
>> > Hi Steve,
>> >
>> > I tried two different SD cards, both worked, so maybe I was lucky. Anyway,
>> > are you sure, you have MBR partition table + the first (boot) partition
>> > starts at 4096?
>> >
>> 
>> I can confirm it is a board level issue: I had the pleasure of playing
>> with Steve's board as well as my own, and as he reported, one of my
>> working SDs also worked on his board. My experience is not as bad, but
>> out of my sizable collection, only two uSD cards are accepted by the
>> bootrom.
>> 
> 
> Who knows, maybe it's somehow related to unstable SD card operation in UEFI? 7040/8040-DB do not have such problems with this interface (and same cards).
> 

But we are talking about boot from SD, long before uefi is even involved.

> Anyway, please boot via UART, following this instruction:
> https://wiki.solid-run.com/doku.php?id=products:a8040:software:development:u-boot_atf
> We found it today, and it really eases the whole process. I'll take it to main McBin wiki.
> 
> Please let know if it worked for you.
> 
> Best regards,
> Marcin
> 

Thanks

>  
>> 
>> > 2017-06-14 18:49 GMT+02:00 Steve McIntyre <steve at einval.com>:
>> >>
>> >> Hey guys,
>> >>
>> >> I'm sstill stumped here with getting my Macchiato to boot off SD. I've
>> >> tried lots of different cards and can't find anything that will
>> >> work. The *only* card that I've seen work is the unlabelled/unknown
>> >> card that Ard brought with him to Cambridge last month. Nothing else
>> >> even comes close to booting on my board, which makes it really
>> >> difficult to get much further with doing anything on my machine.
>> >>
>> >> If it wasn't for this *one* SD card working fine first time, I'd be
>> >> tempted to say my machine had a hardware fault. I've tried multiple
>> >> Sandisk cards from 1GB up to 64GB, Samsung 32G, Toshiba 32G, Kingston
>> >> 8G and up, Intenso 4G. I'm waiting on another Kingston 4G card to land
>> >> tomorrow, to try that too. It's very frustrating. :-(
>> >>
>> >> I'm assuming failure logs are not interesting. I can supply them if
>> >> desired - just ask.
>> >
>> >
>> > Yes, please show the logs.
>> >
>> > Best regards,
>> > Marcin
>> >
>> >>
>> >>
>> >> In the meantime, I can see that there's a fallback option to boot via
>> >> UART. Is there any documentation about what's needed to use that
>> >> anywhere?
>> >>
>> >> --
>> >> Steve McIntyre, Cambridge, UK.
>> >> steve at einval.com
>> >>   Armed with "Valor": "Centurion" represents quality of Discipline,
>> >>   Honor, Integrity and Loyalty. Now you don't have to be a Caesar to
>> >>   concord the digital world while feeling safe and proud.
>> >>
>> >>
>> >> _______________________________________________
>> >> Macchiato mailing list
>> >> Macchiato at lists.einval.com
>> >> https://lists.einval.com/cgi-bin/mailman/listinfo/macchiato
>> >
>> >
>> >
>> > _______________________________________________
>> > Macchiato mailing list
>> > Macchiato at lists.einval.com
>> > https://lists.einval.com/cgi-bin/mailman/listinfo/macchiato
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.einval.com/pipermail/macchiato/attachments/20170614/2345173c/attachment-0001.html>