Hey guys, I've run through the loops to try and figure what could be wrong with this system. The board in question is modeled after the Xilinx ML300 board. It uses a Xilinx System ACE chip to load a FPGA / Kernel image from compact flash. Originally, I was trying to use the CompactFlash as the root file system, but because of issues in either the design or software, this would only work if SysAce was in polled I/O mode. To circumvent this, I built my root filesystem into an initrd image and built a single ELF file with the Kernel and RFS, then strapped that to the FPGA bit file to make a single FPGA/Kernel/RFS SysAce file.
Upon decompression, the Linux kernel boots quickly and loads all of the device drivers. However when it gets to the prompt, it starts slowing down. Output and input to and from the board becomes very very slow (it displays 2 characters roughly every 20 seconds). Originally I believed this to be the CPU still polling SystemAce, so I disabled the Linux System ACE drivers to remove that as a possibility, however after doing this, the problem still persists, even with the RFS in ram! Has anybody encountered a similar situation to this before, with possible insight towards a solution? Thank you for your time. Clinton Thomas cthomas at soneticom.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20060828/14d4c450/attachment.htm
