[XS] Change in coreboot[main]: soc/amd/genoa: Enable PM and cf9 IO early

[Felix Held (Code Review)]

Attention is currently required from: Arthur Heymans, Martin L Roth.

Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/76505?usp=email )

Change subject: soc/amd/genoa: Enable PM and cf9 IO early
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Patch Set 7: Code-Review-1

(1 comment)

File src/soc/amd/genoa/early_fch.c:

https://review.coreboot.org/c/coreboot/+/76505/comment/4b7efc23_aba2183e :
PS2, Line 16: 	enable_acpimmio_decode_pm04();
> The Genoa PPR claims that PMIO can still be accessed through the CD6/CD7 mechanism, so I added the K […]

i read the ppr like that this won't work, so i wouldn't select SOC_AMD_COMMON_BLOCK_ACPIMMIO_PM_IO_ACCESS and remove the enable_acpimmio_decode_pm04 call. have a look at phoenix; the difference will be though that while on phoenix it's not available, on genoa it's just not functional