[coreboot-gerrit] Change in coreboot[master]: nb/i945: Check if IGD is enabled before R/W to dev(0, 2)

[Elyes HAOUAS (Code Review)]

Elyes HAOUAS has posted comments on this change. ( https://review.coreboot.org/28935 )

Change subject: nb/i945: Check if IGD is enabled before R/W to dev(0, 2)
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Patch Set 1:
> I don't see a way IGD could be disabled at this stage. But what
> about
> SKUs that don't have it at all? are there any (on supported
> boards)?

1 - In case we use an external GPU, the IGD is disabled at arly_init.c (line #686). (BTW: line +949 should be commented)
2 - there some desktop's version that do not have IGD at all.
3 - at function "sdram_power_management", we set integrated_graphics = 1 and use it for test in raminit.c line #2305 .... this do not make sense.