Re: [SeaBIOS] Failure to detect high-capacity SD card

[Kevin O'Connor]

On Tue, Feb 06, 2018 at 07:38:22PM -0500, Chris wrote:
> Re: https://mail.coreboot.org/pipermail/seabios/2017-October/011862.html
>
> Did this ever get resolved? I didn't see a response to the final log.
> I'm experiencing the same thing on the same platform (ASUS C302 CAVE).
>
> Card brand doesn't seem to matter. I've tried 32GB Samsung EVO cards,
> various SanDisk cards from 32GB to 128GB. None show up as boot options
> in SeaBIOS. If I use the exact same data/layout except on a smaller
> card like 1GB of any brand then it works no problem.
>
> Same large cards boot fine off an external USB card reader. It appears
> to be an issue with the integrated SD card reader on the C302.
>
> I'm using the same latest MrChromeBox build from May 2017.

No - the issue was not resolved.  We looked at it, but could not
figure out what the SD card (and/or controller) did not like about the
seabios initialization sequence.  The sd card would stop responding
and it wasn't clear what seabios was doing different from linux (which
apparently works fine on the same hardware).

As Paul mentions, if you'd like us to look at this further, please
include the debug logs of a session.  It's possible additional tests
on new hardware will reveal the issue.

-Kevin

Failure to detect high-capacity SD card

[Chris]

On Wed, Feb 7, 2018 at 3:14 AM, Paul Menzel  wrote:
> Please tell us what SeaBIOS version you use, and attach the debug logs from
> a working and non-working setup.

I switched to the SeaBIOS git HEAD code just in case that made a
difference (it did not).

The machine has mmc0 as the internal 64GB SSD, mmc1 is the internal
card reader, then an external USB card reader (64GB) is attached as
well.

The internal card reader is an "Intel Corporation Sunrise Point-LP
Secure Digital IO UART Controller". Machine is a Skylake Intel
architecture. ASUS C302 (CAVE).

Here is the log from a 32GB card that fails to be detected:
https://pastebin.com/sGKX0tVB
ios data from Linux:
https://pastebin.com/bv91V8aq

Here is the log from a successful working 1GB card:
https://pastebin.com/c0AmjeDy
ios data from Linux:
https://pastebin.com/BApEPcVU

There is nothing different between the dmesg of either other than the
size of the detected card. All cards work fine in Linux.

I'll see if I can enable more debugging in the Linux kernel so I can
see what exactly it is doing to initialize the card because right now
it's not showing anything useful.

Chris