On 04/29/2015 04:30 PM, Timothy Pearson wrote:
All,
I have successfully ported coreboot to the relatively modern ASUS KGPE-D16 server board (dual AMD socket G34, 16 DDR3 DIMMs, https://www.asus.com/us/Commercial_Servers_Workstations/KGPED16/)! This port uses native Family 10h initialization (_not_ AGESA or CIMX).
The Libreboot folks will be interested to know that this board can run blob-free and still retain full functionality!
Port specifications: CPU: Dual AMD G34 Magny-Cours (Family 10h) RAM: 16 DDR3 DIMM slots with ECC support (tested with x4 4G DDR3-1333 unbuffered DIMMs)
Just a quick update on this. Work has continued internally, and as of this message the KGPE-D16 port has two additional options available: full S3 support and native (non-AGESA) support for Family 15h processors. When all of the options are combined the KGPE-D16 is able to use the most modern Opterons available with no apparent issues; as a result, there should be very little development work remaining on this system.
The new Family 15h initialisation is integrated into the native Family 10h codebase; the two processors are similar enough overall (though still quite different on a more local scale) that this was feasible. The memory controllers are quite different between the two processor families; much of the additional work was related to updating the processor-independent mct_ddr3 code to handle the modified MCT design and training procedures. During this process the mct_ddr3 codebase has also been cleaned up significantly, and if the entire proposed patchset is merged the cleanup work will continue under Raptor's normal (free) open source development model.
Family 15h port specifications: Opteron 6200 processors: tested, fully functional Opteron 6300[P] processors: theoretically supported, not yet tested Dual packages: theoretically supported, not yet tested
Unbuffered DDR3 DIMMs: tested, fully functional Registered DDR3 DIMMs: theoretically supported, not yet tested Load-Reduced DDR3 DIMMs: incomplete support [1] Reduced DIMM voltage: tested, fully functional
ACPI object generation: tested, fully functional PowerNow!: tested, fully functional S3 suspend/resume: tested, fully functional
As mentioned before, this port was done for internal purposes to give Raptor Engineering a competitive advantage in certain markets. However, Raptor Engineering is willing to upstream the code if funded. The offer is currently broken up into three parts, with each part being dependent on the previous part:
1.) Full KGPE-D16 support as described in previous message, Family 10h only w/o S3: $35,000 USD
2.) Family 10h S3 support: $15,000 USD
3.) Native Family 15h support with S3 and MCT modifications: $40,000 USD
The port is broken up into these sections specifically so that the community can decide what is important enough to fund. Ideally the entire patch set would be funded, but if the community does not have sufficient interest in the most current Opteron processors I don't want to block the potential upstreaming of the other two sections.
Items marked as "theoretically supported" above should work but have not been tested; if they do not function Raptor Engineering would fix any observed failures as part of the quoted costs.
Thank you for your consideration!
1. These are not generally relevant to the KGPE-D16 on a technical basis due to the design of the G34 socket, and even less so given the extremely high cost of LRDIMM modules. However, if LRDIMM support is desired Raptor Engineering would be willing to add support as part of the quoted cost after the rest of the code is upstreamed.