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Communicate with PL from LINUX on PS

deaxman

When I try to program the FPGA with the hardware session in Vivado 2013, in the beginning the "diligent" logo will be on and the done light will be on. In this state I can access a serial connection to the board through tera term. As soon as I program it however, the "diligent" logo disapears and I cannot open a serial connection. All I want to do is program the board and then use the linux on the arm processor to read the values for each of the IO, why does programming the PL reset or disable the PS. Thanks a ton to whoever answers this, I'm at a loss.

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    Forgive me if this seems obvious but you do include in your PL all the necessary logic to run the PS side of the house right?

    Basically the bitstream that is loaded from the SD card has stuff in the PL to support the PS side of the chip, if you don't include that stuff then Linux will be unable to boot and you will see the symptoms you report.

    I've been looking at adding addional IP to the PL side and it looks like the flow is you go through the system builder and add in all the modules needed for Linux, and *then* you go in and add any additional modules you want to add. Then you program that complete chunk of stuff.

    --Chuc

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    Forgive me if this seems obvious but you do include in your PL all the necessary logic to run the PS side of the house right?

    Basically the bitstream that is loaded from the SD card has stuff in the PL to support the PS side of the chip, if you don't include that stuff then Linux will be unable to boot and you will see the symptoms you report.

    I've been looking at adding addional IP to the PL side and it looks like the flow is you go through the system builder and add in all the modules needed for Linux, and *then* you go in and add any additional modules you want to add. Then you program that complete chunk of stuff.

    --Chuc

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