[SeaBIOS] Failure to detect high-capacity SD card

Paul Menzel pmenzel at molgen.mpg.de
Fri Feb 23 13:32:04 CET 2018

Dear Chris,

On 02/23/18 13:06, Chris wrote:
> On Fri, Feb 23, 2018 at 12:24 AM, Kevin O'Connor <kevin at koconnor.net> wrote:
>> This looks to be very similar to the issue Matt raised back in
>> October.  It seems the card needs to run at 1.8 volt (instead of 3.3
>> volt), but it seems to shutdown before telling seabios that.
>> Can you apply the patch at:
>> https://mail.coreboot.org/pipermail/seabios/2017-October/011892.html
>> set the seabios debug level to 3, and send the log again?
> Yes, I believe we're using the same hardware.
> With the patch it still fails.
> During boot devices were:
> * mmcblk0 internal 64GB SSD (detected).
> * mmcblk1 internal card reader with 64GB bootable card in it (fails to
> be detected).
> * External USB reader that has 2 slots, one is empty, the other has a
> 1GB microsd (detected).
> Log:
> https://pastebin.com/L0dhPN8G

Thank you for testing this. For the future, could you please attach log 
files, so that they can be looked in the inbox when offline.

> Looks like the same problem where the card won't respond and times out.
> I still need to see if I can get some debugging information from a
> Linux kernel because everything works fine there. I'm not sure how to
> go about turning it on.

Kind regards,


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