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PJais1
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6 years ago

Arria 10: Warm Reset Error

Hello,

I am designing Linux OS for our Custom board which took design reference from Arria 10 SoC.

I have designed uboot binary image by taking reference from

https://rocketboards.org/foswiki/Documentation/A10GSRDGeneratingUBootAndUBootDeviceTree

and selected QSPI flash for booting the uboot image.

After loading the uboot and peripheral rbf image in the QSPI flash card , it was observed that the HPS is not booting, their is no output on console window , also the debug uart pin is not toggled.

Also, the nRST pin which is used for warm reset becomes low after continuous intervals for around 55usec .

I am unable to understand whether this reset in generated internally by reset manager (in uboot source code ) and if so how to handle this reset so that the HPS is able to boot??

Thanks and Regards,

Priya

5 Replies

    • PJais1's avatar
      PJais1
      Icon for New Contributor rankNew Contributor
      6 years ago

      Hi,

      I am using Quartus 17.1 version. And for the above query which I posted, I read the manuals and did some changes in our I/O muxing. I configured Dedicated I/O bank UART as the debug UART and now console is showing output.But in the message DDR calibration is getting failed.

      The uart console is showing following Error:

      U-Boot 2014.10 (Sep 17 2019 - 15:11:16)

      CPU : Altera SOCFPGA Arria 10 Platform

      BOARD : Altera SOCFPGA Arria 10 Dev Kit

      I2C: ready

      DRAM: WARNING: Caches not enabled

      SF: Read data capture delay calibrated to 1 (0 - 2)

      SF: Detected N25Q1024A with page size 256 Bytes, erase size 4 KiB, total 128 MiB

      FPGA: Early Release Succeeded.

      SF: Detected N25Q1024A with page size 256 Bytes, erase size 4 KiB, total 128 MiBemif_reset interrupt acknowledged

      emif_reset interrupt acknowledged

      emif_reset interrupt acknowledged

      Error: Could Not Calibrate SDRAM

      DDRCAL: Failed

      INFO : Skip relocation as SDRAM is non secure memory

      Reserving 2048 Bytes for IRQ stack at: ffe3a6e8

      DRAM : 0 Bytes

      data abort

      pc : [<ffe001cc>] lr : [<ffe02491>]

      sp : ffe3fff0 ip : 00000016 fp : 00000001

      r10: ffd02078 r9 : ffe3aee8 r8 : ffe00000

      r7 : ffe1d3c4 r6 : 00000000 r5 : 00000000 r4 : ffeff000

      r3 : ffe3afaf r2 : ffe40000 r1 : ffe3d000 r0 : ffe3aee8

      Flags: nzcv IRQs on FIQs on Mode SVC_32

      Resetting CPU ...

      resetting ...

      Could you please help with the error?

      Thanks,

      Priya