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Date: Tue, 20 Jan 2009 09:59:26 +0200
From: Krassimir Slavchev <krassi@bulinfo.net>
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To: "M. Warner Losh" <imp@bsdimp.com>
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Cc: freebsd-arm@FreeBSD.org
Subject: Re: Mount root from SD card?
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M. Warner Losh wrote:
...
> mmcsd0: 1983MB <SD Memory Card> at mmc0 30MHz/1bit
> Trying to mount root from ufs:/dev/mmcsd0s1
> 
> Manual root filesystem specification:
>   <fstype>:<device>  Mount <device> using filesystem <fstype>
>                        eg. ufs:/dev/da0a
>   ?                  List valid disk boot devices
>   <empty line>       Abort manual input
> 
> mountroot> ?
> 
> List of GEOM managed disk devices:
>   mmcsd0
> 
>> Looks like that should be working.
> 
>> mav@ has done a lot of hacking on the mmc code...
> 
>> Do you have 1 wire or 4 wires for your mmc bus on your board?

On the board all 4 bus wires are connected (MCD A0-A3) but I've never
seen working 4-bit mode on AT91RM9200 (See PR128987 too).

Best regards

> 
>> Warner
> 
> With last known working kernel:
> ...
> FreeBSD 8.0-CURRENT #32: Thu Nov  8 17:22:00 EET 2007
> ...
> SD CARD: 2079326208 bytes
> mmcsd0: <mmc or sd flash card> on mmc0
> mmc0: setting transfer rate to 30.000MHz
> Trying to mount root from ufs:/dev/mmcsd0s1
> warning: Low voltage. The time may be corrupted!
> Dec  4 06:42:27 init: getting pseudoterminals resource limit: Invalid
> argument
> pid 25 (sh), uid 0: exited on signal 11
> ...
> 
> 
> Best regards
> 
> 
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