Keith, <br>
<br>
Some suggestions, before you verify your hw board/FPGA works fine with SYSACE, <br>
* don't use sysace as root fs.<br>
* use a ram fs as root fs. <br>
* Next, load sysace driver a loadable driver module. It works, I tried it.<br>
* check mount read only and see if it works.<br>
* Next, mount it writable.<br>
<br>
We have some issues with sysace driver initially, everything works out fine later.<br>
There were small errors in our HW layout.<br>
<br>
I had to hack the sysace driver left and right to id the problem. But at the <br>
end, after I fixed the layout problem from the fpga's ucf file, the original driver<br>
run perfectly without any modification.<br>
<br>
In my experiences, the ppc linux distribution and its linux sysace driver are good<br>
if everything is setup correctly.<br>
<br>
One minor issues: The sysace driver's write performance sucks. I have to explain<br>
to others why the upgrade 10 MBytes files with usb flash writer takes tens of <br>
seconds. When we do it from linux (nfs or ftp), it tooks minutes to sync.<br>
<br>
Peter, maybe you can push the xilinx a bit on sysace write performance? :-)<br>
<br>
-Tony<br><br><div><span class="gmail_quote">On 8/29/05, <b class="gmail_sendername">Peter Ryser</b> <<a href="mailto:peter.ryser@xilinx.com">peter.ryser@xilinx.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi Keith,<br><br>I sent you a private email but for other interested people:<br>Downloading the latest linuxppc-2.4 kernel I could boot from and access<br>System ACE CF without problems on a ML403 (Virtex-4, 4VFX12) and a ML310
<br>(Virtex-II Pro, 2VP30) using EDK 7.1.2. In both cases I started with<br>config_xilinx_ml300.<br><br>- Peter<br><br><br><br>Keith J Outwater wrote:<br><br>>Hello -<br>>Per a previous suggestion from this list, I rsynced the
linuxppc-2.4<br>>kernel sources from MontaVista and modified the kernel to run on my custom<br>>ppc405/VirtexII Pro based system with U-Boot as the bootloader.<br>>When I try to use the SystemACE device as the root filesystem, the kernel
<br>>crashes with a sig 11. Looking at the 'oops' output it appears the<br>>SystemACE driver may be to blame. The crash is random - sometimes I get<br>>all the way to login as root and then things crash on a file copy or a
<br>>file read.<br>>Before I start digging deeper, is anyone running a VirtexIIPro based<br>>system with the root filesystem in the CF card attached to a SystemACE?<br>>I'm wondering if I really have the best kernel and SystemACE driver.
<br>>BTW, I'm developing the hardware design using Xilinx EDK 7.02i.<br>>Thanks,<br>>Keith<br>>_______________________________________________<br>>Linuxppc-embedded mailing list<br>><a href="mailto:Linuxppc-embedded@ozlabs.org">
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</a><br></blockquote></div><br><br clear="all"><br>-- <br>-Tony<br>Having fun with FPGA HW + ppc + Linux<br>