Re: [Devil-Linux-discuss] Compact Flash install

[Andrzej O. <an...@ma...>]

Jan Hugo Prins wrote:
> Hi Andrzej,
> 
> 
>>This is probably a completely new motherboard (by the way, show off what the MBs).
>>
> 
> 
> Not completely new. The board I'm working with at the moment is an Aewin
> CB-8902 board and the board is probably about 5 or 6 years old. Attached
> is some board information.
> 
>>I wrote on a Devil-linux-Develop list, that the new MBs have USB 3.0 
>>controllers instead of USB 2.0 and for this chips xHCI host driver is 
>>required. This driver is by default compiled with the kernel as a module.
>>

Dear Jan Hugo,

Well, a quick installation guide has nothing about the CF controller. We also
have a question: how long will live capacitors on the board, since it already
has six years?

I was expecting, CF controller is connected as Mass Storage device via USB but
you can see that it does not. However, the scenario is as described, which
means that the initial stage of the boot is missing appropriate driver and the
kernel does not see CF card. When later CD is mounted and all modules are
present in filesystems, udev loads the appropriate drivers and CF card will be
displayed.

You need to determine which module is responsible for access to CF eg reading
lspci, lsmod, watching /proc/bus, /proc/scsi etc under full system (when a CD
is already mounted (with the default configuration or the configuration loaded
from the CD as well) and CF is visible. As you suspected a module, remove it
using rmmod and then check whether the device CF disappeared and then load it
back using modprobe and check if it had come again. Then you can try to
compile the apropriate driver as linked statically into the kernel. This is
simplest way; when driver is linked into the kernel, device is present
immediatelly after kernel is loaded, without modules from initrd and explicite
loading this modules by init script.

If you are not prepared for such a compilation, let me know about needed
module and I will try to compile an experimental mod for you.

Regards

Andrzej Odyniec



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