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John's avatar
John
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7 years ago
Solved

Remote re-configure a Cyclone IV in Application-mode?

Is there a way to set the remote_update-core back to Factory-mode or re-configure to another image once it is in Application mode - i.e. without a power-cycle? Both my Factory & App-images have acces...
  • Nooraini_Y_Intel's avatar
    Nooraini_Y_Intel
    7 years ago

    Hi JHono,

    In your application image design, did you set any write_param on the boot address that point to 0x100000? Please remove any write_param operation in the application image design. If you refer to Table 17: Cyclone IV Devices Remote Update Operation from the Remote Update user guide shows that you can only perform read_param operation in application image:

    https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_altremote.pdf

    Also, please uncheck the POR_ERROR function in the application image design. This POF_ERROR function is only needed in the factory image to detect any invalid application image before reconfiguration process start.

    Regards,

    Nooraini

John's avatar
John
Icon for New Contributor rankNew Contributor
7 years ago

"You can just trigger the reconfig input from the RSU IP if you want to fall back from App images into Factory image." - This is exactly what I want to do, but it doesn't seem to work, when it is running the App-image.

When I write to ru_reconfig my hardware gets stuck trying to load an image from the EPCS16.

As further info: I can see in signaltap that it is trying to load an image from 0x100421 (my App-image lives at 0x100000).

Somehow the boot-address has been changed during re-config and as the MSM is now in mode 1, so I can't write new data into the RU_CSR.

CSR 0x10 has 0x020 in it and CSR 0x13 has 0x100400. The RSU IP appears to add these together to make a new load-address.

Do I need to configure something else in the CSR to make it boot back to the factory-image?

Thanks, John.