This is my personal config for coreboot on my KGPE-D16, along with the resulting binaries.
I've put it up so that I've got a backup, and the necessary info to reproduce my setup.
Flash this onto your own hardware at your own risk. I give no gaurantee that you won't brick your device, so make sure you have a spare DIP-8 with a known good BIOS, or an external programmer handy if it does not work out.
Nothing in particular with the specific revisions, it is more that particular releases gave me problems on my hardware.
The Libreboot release for this board is quite old at this point, and did not boot consistently for me (hit bootloader on my disk maybe 50% of the time.)
Coreboot 4.7 release seemingly had ACPI issues for my processor (Opteron 6276),
which resulted in drastic performance decreases. cpupower was unable to
obtain a list of supported governors for the CPU, and could not detect the
correct supported frequencies.
Coreboot 4.6 release had issues booting consistently (approx. 90% of the time failing to hit my bootloader). Kernel also reported performance problems with interrupts, like this:
[ 202.558045] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 11.982 msecs
[ 203.270599] perf interrupt took too long (32661 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 213.765389] perf interrupt took too long (32437 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[ 224.907326] perf interrupt took too long (32217 > 10000), lowering kernel.perf_event_max_sample_rate to 12500
These issues also appear in the kernel_log.txt of coreboot's automated board
status for the kgpe-d16 which you can see here.
The revision I've picked here is from before the ACPI and interrupt performance issues started to show up in the later 4.6 releases, but after the fixes that appear to have remedied the boot consistency issues I had with the 4.6 release.
The SeaBIOS revision was just latest SeaBIOS at the time. I've included the hash just to make the whole build possible to reproduce.