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FabianL's avatar
FabianL
Icon for Occasional Contributor rankOccasional Contributor
8 months ago
Solved

Arria 10: Remote Update Watchdog unpredicted behavior

Hello,   I start a new thread here, since the previous thread is not answered anymore after the transformation from Intel to Altera Forum. All details and data is still valid from the original thre...
Configuration
Programmable Logic Device
  • Farabi_Altera's avatar
    Farabi_Altera
    7 months ago

    Hello Fabian, 

     

    Thanks for the reply. 

     

    Functional error in that context is when the logic that is responsible to reset the WD timer fails to do its task, which will initiate a fallback mechanism. The third paragraph actually correlates with the first paragraph. Factory fallback needs to meet certain conditions when in application configuration for it to happen, so expecting the fallback mechanism to occur with everything working correctly is a wrong understanding. 

     

    regards,

    Farabi

Farabi_Altera's avatar
Farabi_Altera
Icon for Regular Contributor rankRegular Contributor
8 months ago

Hello Fabian, 

 

Things to check : 

1- There is possibility watchdog not truly enabled after reconfiguration, please make sure you perform below steps 

a) RU_WATCHDOG_TIMEOUT

b) RU_WATCHDOG_ENABLE = 1

before you assert RU_RECONFIGURATION_MODE and RU_RECONFIG.

 

2- Can you try to set the factory start address at fixed address = 0x0000_0020 and see if its can improve the fallback mechanism? 

 

If you confirm step #1 anf #2 and make sure application makes no writes to RSU watchdog register, or any RSU control registers until your app is ready to keep the image, the device should revert to factory image after timeout. 

 

regards,
Farabi