Error while walking through a Reference Design

Hello, I'm having a problem with a "Reference Design" which can be downloaded at:
http://zedboard.org/design
-> "Zynq Concepts, Tools, and Techniques on ZedBoard v14.3"

I worked my way through the tutorials but it causes an error at chapter "5.4 Controlling LEDs and Switches in Linux Example". When I should programm the FPGA on page 73 in step 8, the LED LD12 lights up blue but LINUX crashes with the following error messages (at serial connection):

[ 371.640000] Unhandled fault: imprecise external abort (0x506) at 0xb6d66746
[ 371.640000] Internal error : 406 [#1] PREEMPT SMP
[ 371.640000] Modules linked in:
[ 371.640000] CPU: 0 Tainted: G W (3.3.0-digilent-12.07-zed-beta#2)
...(and so on)

The ethernet is no more online so I'm not able to go on with the tutorial.
Hope someone can help me fixing this error.
regards, dice

0 Former Member over 12 years ago

Still not working. Has anyone else tried the tutorial?
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0 Former Member over 12 years ago

Hi,

I'm not sure why they say to program the FPGA after Linux has booted in this tutorial, but in my experience it almost always leads to a crash. The best ways I have found to do this are:
1. Program the FPGA and launch Linux using the JTAG connection
2. Make a new BOOT.bin with your own FSBL and bit file and replace the one on the SD Card

I think the error itself is being caused by the device tree. If you are using the default one then it has entries for the OLED and the demos, which are no longer present, so when Linux tries to access these it crashes.

I found the tutorials which can be downloaded from the link below to be more useful as a starting guide, but there isn't much out there yet:

http://www.xilinx.com/training/embedded/embedded-design-tutorials.zip
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0 Former Member over 12 years ago

Thanks a lot for your answer! I tried it the way you wrote and succeeded. Now taking a look at your tutorials.
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