How to configure and use PCIe Gen2 interface in Xeon D

[Tamilselvan]

PCIe Gen2 interface (x8) is listed in the product brief of Intel® Xeon® Processor D-1500
Product Family document. Couldn't find the configuration registers for PCIe Gen2 interface in the datasheet. Also checked the BSF file(Firmware support package) using BCT tool. 

Could you please share the details of using/configuration PCIe Gen2 interface.

[Tamilselvan]

PCIe Gen2 interface (x8) is listed in the product brief of Intel® Xeon® Processor D-1500
Product Family document. Couldn't find the configuration registers for PCIe Gen2 interface in the datasheet. Also checked the BSF file(Firmware support package) using BCT tool. 

Could you please share the details of using/configuration PCIe Gen2 interface.

[CarlosAM_INTEL]

Hello, @Tamilselvan:

Thank you for contacting Intel Embedded Community.

The information that may help you can be found in sections 1.3, 2.5.1, 3, 4.3.1, 5.1.22.1, 5.1.22.5, 5.1.22.8, 5.1.42, 5.1.53, 5.1.54, 7.8.3.1, 7.8.3.2, 8.1.35, 8.4.1.4, 9.1.28, 13.1.28, 13.1.49, and 13.1.54 of the Intel(R) Xeon(R) Processor D-1500 Product Family External Design Specification (EDS) Volume 5: Integrated PCH document # 544044.It can be found when you are logged into your Resource & Design Center (RDC) privileged account on the following website:

http://www.intel.com/cd/edesign/library/asmo-na/eng/544044.htm

The RDC Account Support form is the channel to process your account update request or report any inconveniences with the provided site. It can be found at:

https://www.intel.com/content/www/us/en/forms/support/my-intel-sign-on-support.html

Best regards,

@CarlosAM_INTEL.

[Tamilselvan]

Hi @CarlosAM_INTEL,

Thanks for the response.

I couldn't find the x8 PCIe Gen2 bifurcation details in the document which you specified and also in the board setting file(BSF).

But I could see the configurable option of x24 PCIe Gen3 bifurcation in the BSF. 

x8 PCIe Gen2 lanes can't be configured using BSF?

[CarlosAM_INTEL]

Hello, @Tamilselvan:

Thank you for contacting Intel Embedded Community.

We suggest modifying the strap settings for HSIO configuration stated in sections A.5 and A.10, on pages 80 and 82 of the Intel Xeon Processor D-1500 Product Family SPI Programming Guide document # 565117 that can be found in the following website:

http://www.intel.com/cd/edesign/library/asmo-na/eng/565117.htm

The RDC Account Support form is the channel to process your account update request and any inconveniences associated with the listed websites. It can be found at:

https://www.intel.com/content/www/us/en/forms/support/my-intel-sign-on-support.html

Best regards,

@Mæcenas_INTEL​.