Kernel Configuration

[Mark Clark]

Hello, I am bringing up a Beckhoff CX5000 series system.  I have a kernel and file system built from gentoo Linux and grub2.  The CF card I am using works great from a USB-CF adapter connected to a bootable USB port on the system, however it will not boot from the CF card slot.  I'm missing a driver or some kernel configuration and don't know where to turn next.  Any advice would be greatly appreciated.

-- Mark

[Richard Lemon]

Hi Mark,

the following page from the Beckhoff website might be useful. 

http://www.beckhoff.com.au/english.asp?embedded_pc/cx5010_cx5020.htm

There is an info graphic that shows the unit designations, the CX50x0-x10x where the lower case x are unimportant is a CX5000 without operating system, these are the only systems that I have booted linux on. The windows based units may not boot a different operating system from the CF card slot, from memory they are a locked down system.

Cheers

Richard

On 27 Dec 2013, at 2:39 am, Mark Clark <macl...@gmail.com> wrote:

Hello, I am bringing up a Beckhoff CX5000 series system.  I have a kernel and file system built from gentoo Linux and grub2.  The CF card I am using works great from a USB-CF adapter connected to a bootable USB port on the system, however it will not boot from the CF card slot.  I'm missing a driver or some kernel configuration and don't know where to turn next.  Any advice would be greatly appreciated.

-- Mark

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[Mark Clark]

Richard, thanks for your quick response. Your reply is interesting. I have just discovered that using the ide_generic with a probe_mask of 0x03 allows the kernel to mount the cf card. I had already gotten a 3.10 kernel to boot by setting the bios to boot from USB. The USB works fine since it's using the SCSI driver.

I'm curious if I've discovered a back door or if the system is less locked down than expected.

Thanks... Mark.

[Mark Clark]

The Beckhoff I am using is a CX5020.   I have used CX1020 systems before that are running a 2.26 kernel.  This is my own personal first attempt at making a CF for one.  I am using a much newer kernel. 3.10.

I am surprised that it needs to boot a legacy IDE probe.  If you have a 5020 booting Linux would you mind sending me your .config?   My particular application is using the USB-Serial interface to talk to a high speed radio.