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watanabe's avatar
watanabe
Icon for New Contributor rankNew Contributor
1 day ago

Regarding the issue of UFM not starting

I am trying to implement a remote system update feature using Quartus version 23.1 on an FPGA (MAX10 10M16SA). I have set the configuration mode to Dual Compressed Images, and writing to CFM0 and CFM...
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FakhrulA_altera's avatar
FakhrulA_altera
Icon for Regular Contributor rankRegular Contributor
1 hour ago

Hi watanabe,

Thanks for the details. From my understanding, if CFM programming is working but the Nios II software in UFM does not start, the most common causes are below.

Could you please check:

  • Boot method match: Confirm whether you are using XIP (execute-in-place) from UFM or a boot copier that copies the app from UFM to RAM. If the system is set for boot copier but only the app HEX is placed at the reset address, the CPU will not start correctly. 
  • Reset and exception vectors: Ensure the reset vector points to the exact UFM address/page where the code starts. A page or offset mismatch will look like “no boot”. Try refer UBooting with dual compressed images on a MAX 10.
  • Dual Compressed Images behavior: In Dual Compressed Images mode, on-chip RAM preload is disabled. If your flow depends on RAM being pre-initialized at configuration time, it will not work in this mode.
  • UFM placement for multiple images: If you are trying to keep two software images in UFM (aligned to CFM0/CFM1), you may need an explicit offset strategy and a combined HEX approach, not two separate HEX files. 

     

Regards,
Fakhrul