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Altera_Forum's avatar
Altera_Forum
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12 years ago

boot configuration files from NOR Flash

hi,

i am using a Cyclone IV device,NOR Flash(PC28700BP30EF),JTAG,EPCS ans a external switch, the arragement is shown in attached figure.

i have to flash two different images(A and B) in NOR Flash. i have to configure my CycloneIV device,when the switch is closed i have to select Image A from NOR flash and when switch is open i have to select Image B from NOR flash.

Is there any possible solutions to do this ......

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    Why do you need both EPCS and a NOR flash for configuration?

    I can't find that flash part name. I guess it's a parallel flash; then you could possibly connect the switch signal to one of the higher address lines and make a true 'hardware' selection of the image.

    On the other hand the usual solution is using remote update core: you always load a third default configuration, which only purpose is testing the switch status and triggering a fpga reconfiguration with the appropriate image.
  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    Hi Cris72,

    The flash part name is PC28F00BP30E. I am using cyclone IV gx family FPGA.

    As I told, I have two different configuration images to be loaded into my FPGA and i need to select anyone based on a switch kind of thing

    I have the following Questions

    1. In this type of FPGA, is configuration from Norflash possible(i feel it requires AP mode, that s not supported in Cyclone IV GX).

    2. How does PFL supports FPGA configuration ? is it of any use???

    3. Is there anyother possible methods to do it with the available resources as shown in block diagram???

    Thanks and Regards,

    Santhosh