sd card probing (was: FreeBSD 10.0 on Raspberry PI B+ no network devices

[Bernd Walter]

On Wed, Oct 22, 2014 at 03:41:22PM -0600, Warner Losh wrote:
> 
> On Oct 22, 2014, at 2:44 PM, Bernd Walter <ticso at cicely7.cicely.de> wrote:
> 
> > On Tue, Oct 14, 2014 at 12:51:50PM -0300, Luiz Otavio O Souza wrote:
> >> On 14 October 2014 01:13, Bernd Walter wrote:
> >>> 
> >>> Ok - that card problem seems random or contact related.
> >>> Whatever, it is 6 am - time to sleep ;-)
> >> 
> >> I've found a missing silicon bug workaround on our driver.
> >> 
> >> It's pretty recent and i'm still building new images to test with more
> >> cards, but it did fix all the instability i was seeing on the
> >> identification of one of my cards.
> >> 
> >> Together with the new firmware (yes, there is another SD fix there) my
> >> RPi B rev 2 (with this same card) has gone from unusable to rock
> >> stable (i've done 80 cold boots without any damage/corruption to the
> >> card).
> >> 
> >> Please, give it a try and let me know if it helps.
> > 
> > Tested.
> > All I can say so far is that it is random, but your patch didn't help.
> > Furthermore this problem now happens on each boot try.
> > It still may be possible that it can boot, but I've tried many more
> > times than needed before.
> > 
> > Timecounters tick every 10.000 msec
> > usbus0: 480Mbps High Speed USB v2.0
> > ugen0.1: <DWCOTG> at usbus0
> > uhub0: <DWCOTG OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0
> > mmcsd0: 8GB <SDHC 00000 1.0 SN 62A50A6C MFG 11/2013 by 27 SM> at mmc0 41.6MHz/4bit/65535-block
> > mmcsd0: Error indicated: 1 Timeout
> > mmcsd0: Error indicated: 1 Timeout
> > fb0: 656x416(0x0 at 0,0) 16bpp
> > fb0: pitch 1312, base 0x5e006000, screen_size 545792
> > fbd0 on fb0
> > VT: initialize with new VT driver "fb".
> 
> My RPi-B fails at mount root. It just hangs forever with recent kernel / firmware.

Can't say anything about up to date current.
I stayed at the same svn rev and firmware to not introduce any other
influences for that test.
FreeBSD 11.0-CURRENT #0 r273186M: Wed Oct 22 20:25:48 CEST 2014
    ticso at cicely1.cicely.de:/root/crochet-freebsd/work/obj/arm.armv6/home/builder/arm-build/head/sys/RPI-B arm
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.