System ACE MPU interface to CF card

Stephen Williams 612dlag102 at
Fri Apr 16 06:14:11 EST 2004

Sharad Gupta |PPC Linux Embedded| wrote:

 > Thanks Stephen,
 > Your patch helped me a lot in compiling and configuring my kernel. Just
 > on a side note, have you been able to talk to compact flash (mount fs on
 > it, fsck it ?) through system ace ?
 > My kernel hangs while doing partition check on the drive. All I ever see is
 > Partition check:
 > xsysacea:
 > (then nothing happens)
 > I am using SanDisk's 128MB CF card and system ace is configured in the
 > byte mode. Any pointers as to why it is not going ahead will be highly
 > appreciated.

Works just peachy for me, with 32M and 256M disks installed. I
have most of my embedded system living on the disk (a little
bit of ramdisk for root, and tmpfs for /tmp) with not a spot
of trouble.

I have noticed that if the disk does not have a .ace file on
it, and a Xilinx chip to program, the driver fails to get any
partition info from the disk and it all fails from there. So
I suspect the driver still to some degree relies on the state
of the chip after a successful Xilinx load. If you are trying
to use the chip without an FPGA attached, you may be running
into that.
Steve Williams                "The woods are lovely, dark and deep.
steve at XXXXXXXXXX           But I have promises to keep,
http://www.XXXXXXXXXX         and lines to code before I sleep,       And lines to code before I sleep."

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