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CHung's avatar
CHung
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

AN881 reference design need to be upgraded for device 1SM21CH.

Hi, ​ The following reference design is based on 1SM21BH device. https://fpgacloud.intel.com/devstore/platform/19.1.0/Pro/an881-pcie-avmm-dma-gen3x16-ddr4-and-hbm2/ ​ We use Stratix 10 MX 1SM21C...
BoonT_Intel's avatar
BoonT_Intel
Icon for Frequent Contributor rankFrequent Contributor
6 years ago

Hi I need some time to setup the server at my side.

For your side, can you give a quick try by go to bios, change the slot PCIe gen to Gen2 instead.

Also, give a try on other non-hbm design like I suggest previously.

CHung's avatar
CHung
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Hi,

​

We noticed a strange phenomenon when changing BIOS setting.

​

  1. When AN881 SOF is programmed to FPGA
    1. If we set PCIe slot as AUTO detect, the computer boots successfully.
    2. If we set PCIe slot as gen3x16, gen2x16, or gen1x16, the computer cannot boot, and the beep code is 8-short which means "display memory read/write test failure".
  2. When nothing is programmed to FPGA
    1. computer boot successfully no matter which BIOS setting is applied.

​

​So we guess, BIOS did detect something when BIOS setting is not AUTO and FPGA has SOF.

However, we cannot enter Linux normally under this case.