Skiboot/NVRAM

From RCS Wiki
Revision as of 16:07, 18 October 2018 by SiteAdmin (talk | contribs) (Created page with "Loose collection of known NVRAM settings in Skiboot: == pcie-max-link-speed == Description: PCIe Link Speed Cap To cap the link speed, change the "pcie-max-link-speed" vari...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Loose collection of known NVRAM settings in Skiboot:

pcie-max-link-speed

Description: PCIe Link Speed Cap

To cap the link speed, change the "pcie-max-link-speed" variable to the maximum generation you want to support and re-IPL the machine. For instance, to cap at PCIe Generation 3, in the petitboot command line type:

nvram -p ibm,skiboot --update-config pcie-max-link-speed=3