Hi, All, There are some good questions asked on Slim Bootloader github. Since mailing list communication is totally separated from github, I would like to forward the discussion to the SBL development mailing list so that the information can be shared. One issue filed on github is “PCIe base not passed from SBL to Payload”, please refer to the original discussion for detailed information. https://github.com/slimbootloader/slimbootloader/issues/110 Thanks Maurice