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321 Discussions

Arria 10 SoC - Kernel load Failed. nRST output a low pulse.

AMa
Partner
584 Views

The uboot load successful. When load kernel, the file system, dtb file, kernel all load correcy, the peripheral inistal success, but the kernel can not enter to shell, the last log is " ttyS0 - failed to request DMA", and the nRST pin output a low pulse.

Do you know, what is the reason about this low pulse on nRST Pin?

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6 Replies
EBERLAZARE_I_Intel
451 Views

Hi,

 

Firstly, may I know which Quartus version you are working on? Are you using our GHRD image for testing or your own design?

 

If you are using your own deisgn, in Quartus/Platform designer, do you see any error reported?

 

 

AMa
Partner
451 Views

Hi,

The Quartus version is 18.1 Pro. There is no other peripheral in qsys sytem, just have the EMIF configuration, UART, QSPI Flash and EMAC.

There is also no error in error report.

I can attach my Quartus Project for you reference.

AMa
Partner
451 Views

The attached is my project.

The linux kernel version is 4.1.22.

EBERLAZARE_I_Intel
451 Views

Hi,

 

This kernel is old, have you try newer version of kernel to see if this improves the issue? Latest available version can be found here:

https://github.com/altera-opensource/linux-socfpga

 

Can you share your boot logs with the kernel logs as well?

AMa
Partner
451 Views

Sure. I had attached the log file, please help to check it. Thanks!

EBERLAZARE_I_Intel
451 Views

Hi,

 

Thanks for the logs, have you tried rebuilding the image with newer kernels, kernel 5.4 for example?

https://github.com/altera-opensource/linux-socfpga

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