[coreboot] KGPE-D16 AMD-vi fails because combined sata is enabled

[Peter Stuge]

Thierry Laurion wrote:
> ENABLE_IDE_COMBINED_MODE available for sp800 but not for sp700, for ewhich
> sp5100 is derived from:
..
> Suggested Workaround
> Disable combined mode by setting a platform BIOS callback option to CIMx
> called "SataIdeCombinedMode" to 0.
..
> Is there something i'm missing? Is it possible to disable combined
> sata mode for sb700 from coreboot?

SB700 mainboard support seems copypasted rather than engineered. The
sustainable solution is to move sb700_cfg.c from src/mainboard/*/
to src/southbridge/amd/cimx/sb700/ and hook the configuration in that
file into Kconfig.

Until someone does that, you could indeed change the assignment of
that option by looking for

SataIdeCombinedMode

in the source code, if a sb700_cimx_config() function is called for
this board - but that might not be the case if the board port chose
not to use that part of AGESA.


//Peter