Linux issues on Xilinx XUPV2P board
alan.casey5 at mail.dcu.ie
Fri Jul 4 01:18:56 EST 2008
I have tried running the Linux 2.6.24 and Linux 2.6.26 kernels from
git.xilinx.com on the Xilinx XUPV2P board but have run into a few problems.
Cross-compiler i use to compile applications was built using Crosstools
based on gcc 3.3.4. I use Xilinx EDK 7.1 for integrating hardware peripherals
onto the board.
The problems i've seen are:
(i) gettimeofday software function returns time of 0 all the time.
(ii) The Linux 2.6.24 kernel's Xilinx Framebuffer driver and/or the Xilinx
PLB TFT Controller IP block (plb_tft_cntlr_ref_v1_00_d) does not appear
to centre the display on a VGA screen properly(vertically offset).
(iii) 64-bit write/read access to peripheral integrated onto the Xilinx
Virtex-II Pro FPGA either causes a system crash or only lower part
of 32-bit data to be written (i.e. lower part of 64-bit data appears
to be mirrored on the upper and lower 32-bits of the system bus).
However, 32-bit write/read access to the peripheral passes as well
as 64-bit write/read access to the SDRAM memory address space.
Peripheral interface has been verified to be IBM PLB compliant
via IBM bus functional model simulations.
(iv) The Linux 2.6.26 Xilinx Framebuffer driver on the Xilinx XUPV2P board
does not appear to be working - nothing displayed to screen/console
not switching to framebuffer device on bootup.
Just wondering if anybody has seen these issues before and know how to
Any info. appreciated,
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