[coreboot] VIA C7 on BCom Winnet P680 - L1/L2 cache very slow

[Corey Osgood]

I'm working on fixing up the BCom WinNet P680 port, which is a Via C7 CPU
and CN700/VT8237R chipset. I've got it running enough to boot a Memtest86
payload, but it's very slow. The L1 and L2 cache are reported as running at
11-12MB/s by Memtest, which is much slower then they're reported as running
in the stock BIOS. This makes any further testing impractical, as it takes
ages load a kernel+initrd. Any suggestions on how to fix this, or where to
look?

Thanks,
Corey